The %
operator is for integers. You're looking for the fmod()
function.
#include <cmath>
int main()
{
double x = 6.3;
double y = 2.0;
double z = std::fmod(x,y);
}
This solution is helpful too:
Add validateRequest="false"
in the <%@ Page
directive.
This is because ASP.net examines input from the browser for dangerous values. More info in this link
Use NSError to communicate failures rather than exceptions.
Quick points about NSError:
NSError allows for C style error codes (integers) to clearly identify the root cause and hopefully allow the error handler to overcome the error. You can wrap error codes from C libraries like SQLite in NSError instances very easily.
NSError also has the benefit of being an object and offers a way to describe the error in more detail with its userInfo dictionary member.
But best of all, NSError CANNOT be thrown so it encourages a more proactive approach to error handling, in contrast to other languages which simply throw the hot potato further and further up the call stack at which point it can only be reported to the user and not handled in any meaningful way (not if you believe in following OOP's biggest tenet of information hiding that is).
Reference Link: Reference
jQuery's documentation states:
[jQuery.val] checks, or selects, all the radio buttons, checkboxes, and select options that match the set of values.
This behavior is in jQuery
versions 1.2
and above.
You most likely want this:
$("._statusDDL").val('2');
Pass the object:
doSomething(this)
You can get all data from object:
function(obj){
var value = obj.value;
var id = obj.id;
}
Or pass the id
only:
doSomething(this.id)
Get the object and after that value:
function(id){
var value = document.getElementById(id).value;
}
You can either use the prepareStatement
method taking an additional int
parameter
PreparedStatement ps = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)
For some JDBC drivers (for example, Oracle) you have to explicitly list the column names or indices of the generated keys:
PreparedStatement ps = con.prepareStatement(sql, new String[]{"USER_ID"})
You can do this to only monitor own properties of the object:
var arr = [];
for (var key in p) {
if (p.hasOwnProperty(key)) {
arr.push(p[key]);
}
}
@Override
protected void onPostExecute(final Boolean success) {
mProgressDialog.dismiss();
mProgressDialog = null;
setting the value null works for me
Simple questions such as,
Though these are very basic, many developers do not know the answers. I suggest these be asked before the code-related queries.
I think the easiest thing to do is just to reuse dirname() So you can call
os.path.dirname(os.path.dirname( __file__ ))
if you file is at /Users/hobbes3/Sites/mysite/templates/method.py
This will return "/Users/hobbes3/Sites/mysite"
This adds "getWeek" method to Date.prototype which returns number of week from the beginning of the year. The argument defines which day of the week to consider the first. If no argument passed, first day is assumed Sunday.
/**
* Get week number in the year.
* @param {Integer} [weekStart=0] First day of the week. 0-based. 0 for Sunday, 6 for Saturday.
* @return {Integer} 0-based number of week.
*/
Date.prototype.getWeek = function(weekStart) {
var januaryFirst = new Date(this.getFullYear(), 0, 1);
if(weekStart !== undefined && (typeof weekStart !== 'number' || weekStart % 1 !== 0 || weekStart < 0 || weekStart > 6)) {
throw new Error('Wrong argument. Must be an integer between 0 and 6.');
}
weekStart = weekStart || 0;
return Math.floor((((this - januaryFirst) / 86400000) + januaryFirst.getDay() - weekStart) / 7);
};
i think you try to align the content to the right within the div, the div with offset already push itself to the right, here some code and LIVE sample:
FYI: .pull-right
only push the div to the right, but not the content inside the div.
HTML:
<div class="row">
<div class="container">
<div class="col-md-4 someclass">
left content
</div>
<div class="col-md-4 col-md-offset-4 someclass">
<div class="yellow_background totheright">right content</div>
</div>
</div>
</div>
CSS:
.someclass{ /*this class for testing purpose only*/
border:1px solid blue;
line-height:2em;
}
.totheright{ /*this will align the text to the right*/
text-align:right;
}
.yellow_background{
background-color:yellow;
}
Another modification:
...
<div class="yellow_background totheright">
<span>right content</span>
<br/>image also align-right<br/>
<img width="15%" src="https://www.google.com/images/srpr/logo11w.png"/>
</div>
...
hope it will clear your problem
Just use final class.
If you want to be able to add other values use an abstract class.
It doesn't make much sense using an interface, an interface is supposed to specify a contract. You just want to declare some constant values.
class PushObjects {
testMethod(): Array<number> {
//declaration and initialisation of array onject
var objs: number[] = [1,2,3,4,5,7];
//push the elements into the array object
objs.push(100);
//pop the elements from the array
objs.pop();
return objs;
}
}
let pushObj = new PushObjects();
//create the button element from the dom object
let btn = document.createElement('button');
//set the text value of the button
btn.textContent = "Click here";
//button click event
btn.onclick = function () {
alert(pushObj.testMethod());
}
document.body.appendChild(btn);
function el(id) {
return document.getElementById(id);
}
if (el('one') || el('two') || el('three')) {
alert('yes');
} else if (el('four')) {
alert('no');
}
This is a sample method i created to validate email addresses, if the string parameter passed is a valid email address , it returns true, else false is returned.
private boolean validateEmailAddress(String emailAddress){
String expression="^[\\w\\-]([\\.\\w])+[\\w]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
CharSequence inputStr = emailAddress;
Pattern pattern = Pattern.compile(expression,Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
return matcher.matches();
}
git checkout old_branch
git branch new_branch
This will give you a new branch "new_branch" with the same state as "old_branch".
This command can be combined to the following:
git checkout -b new_branch old_branch
int[] b = new int[3];
Array.Copy(a, 1, b, 0, 3);
First generate module:
ng g m moduleName --routing
This will create a moduleName folder then Navigate to module folder
cd moduleName
And after that generate component:
ng g c componentName --module=moduleName.module.ts --flat
Use --flat for not creating child folder inside module folder
You can use asdf to install and switch between multiple java versions. It has plugins for other languages as well. You can install asdf with Homebrew
brew install asdf
When asdf is configured, install java plugin
asdf plugin-add java
Pick a version to install
asdf list-all java
For example to install and configure adoptopenjdk8
asdf install java adoptopenjdk-8.0.272+10
asdf global java adoptopenjdk-8.0.272+10
And finally if needed, configure JAVA_HOME for your shell. Just add to your shell init script such as ~/.zshrc in case of zsh:
. ~/.asdf/plugins/java/set-java-home.zsh
import sys
for x in range(10000):
print "HAPPY >> %s <<\r" % str(x),
sys.stdout.flush()
Just to point out that there is an approach using functions from the tidyverse
, which I find more readable than gsub
:
a %>% stringr::str_remove(pattern = ".*_")
If you use a website and you fill out a form to submit information (your social security number for example) you want to be sure that the information is being sent to the site you think it's being sent to. So browsers were built to say, by default, 'Do not send information to a domain other than the domain being visited).
Eventually that became too limiting but the default idea still remains in browsers. Don't let the web page send information to a different domain. But this is all browser checking. Chrome and firefox, etc have built in code that says 'before send this request, we're going to check that the destination matches the page being visited'.
Postman (or CURL on the cmd line) doesn't have those built in checks. You're manually interacting with a site so you have full control over what you're sending.
To me, it is better to put the transition codes with the original/minimum selectors than with the :hover or any other additional selectors:
#content #nav a {_x000D_
background-color: #FF0;_x000D_
_x000D_
-webkit-transition: background-color 1000ms linear;_x000D_
-moz-transition: background-color 1000ms linear;_x000D_
-o-transition: background-color 1000ms linear;_x000D_
-ms-transition: background-color 1000ms linear;_x000D_
transition: background-color 1000ms linear;_x000D_
}_x000D_
_x000D_
#content #nav a:hover {_x000D_
background-color: #AD310B;_x000D_
}
_x000D_
<div id="content">_x000D_
<div id="nav">_x000D_
<a href="#link1">Link 1</a>_x000D_
</div>_x000D_
</div>
_x000D_
Try:
.Formula = "='" & strProjectName & "'!" & Cells(2, 7).Address
If your worksheet name (strProjectName
) has spaces, you need to include the single quotes in the formula string.
If this does not resolve it, please provide more information about the specific error or failure.
Update
In comments you indicate you're replacing spaces with underscores. Perhaps you are doing something like:
strProjectName = Replace(strProjectName," ", "_")
But if you're not also pushing that change to the Worksheet.Name
property, you can expect these to happen:
#REF
errorThe reason for both is that you are passing a reference to a worksheet that doesn't exist, which is why you get the #REF error. The file dialog is an attempt to let you correct that reference, by pointing to a file wherein that sheet name does exist. When you cancel out, the #REF error is expected.
So you need to do:
Worksheets(strProjectName).Name = Replace(strProjectName," ", "_")
strProjectName = Replace(strProjectName," ", "_")
Then, your formula should work.
Calculate row means on a subset of columns:
Create a new data.frame which specifies the first column from DF as an column called ID and calculates the mean of all the other fields on that row, and puts that into column entitled 'Means':
data.frame(ID=DF[,1], Means=rowMeans(DF[,-1]))
ID Means
1 A 3.666667
2 B 4.333333
3 C 3.333333
4 D 4.666667
5 E 4.333333
Use
fmt.Println(t.Format("20060102150405"))
as Go uses following constants to format date,refer here
const (
stdLongMonth = "January"
stdMonth = "Jan"
stdNumMonth = "1"
stdZeroMonth = "01"
stdLongWeekDay = "Monday"
stdWeekDay = "Mon"
stdDay = "2"
stdUnderDay = "_2"
stdZeroDay = "02"
stdHour = "15"
stdHour12 = "3"
stdZeroHour12 = "03"
stdMinute = "4"
stdZeroMinute = "04"
stdSecond = "5"
stdZeroSecond = "05"
stdLongYear = "2006"
stdYear = "06"
stdPM = "PM"
stdpm = "pm"
stdTZ = "MST"
stdISO8601TZ = "Z0700" // prints Z for UTC
stdISO8601ColonTZ = "Z07:00" // prints Z for UTC
stdNumTZ = "-0700" // always numeric
stdNumShortTZ = "-07" // always numeric
stdNumColonTZ = "-07:00" // always numeric
)
A short but may be less readable version of one of the previous answers.
<script type="text/javascript">
$(document).ready(DOM_Load);
function DOM_Load (e) {
$("#datefield").on("click", dateOfBirth_Click);
}
function dateOfBirth_Click(e) {
let today = new Date();
$("#datefield").prop("max", `${today.getUTCFullYear()}-${(today.getUTCMonth() + 1).toString().padStart(2, "0")}-${today.getUTCDate().toString().padStart(2, "0")}`);
}
</script>
If I understand correctly, you can use the module operator for this. For example, in Java (and a lot of other languages), you could do:
//j is a multiple of four if
j % 4 == 0
The module operator performs division and gives you the remainder.
I like this one: it - vec.begin()
, because to me it clearly says "distance from beginning". With iterators we're used to thinking in terms of arithmetic, so the -
sign is the clearest indicator here.
Active all Browser. Good luck
var process;
var delay = 50; //milisecond scroll top
var scrollPixel = 20; //pixel U want to change after milisecond
//Fix Undefine pageofset when using IE 8 below;
function getPapeYOfSet() {
var yOfSet = (typeof (window.pageYOffset) === "number") ? window.pageYOffset : document.documentElement.scrollTop;
return yOfSet;
}
function backToTop() {
process = setInterval(function () {
var yOfSet = getPapeYOfSet();
if (yOfSet === 0) {
clearInterval(process);
} else {
window.scrollBy(0, -scrollPixel);
}
}, delay);
}
Up to C#5 (-VS2013) you have to call a function/method for it. Either a "normal" function such as String.Format
or an overload of the + operator.
string str = "Hello " + name; // This calls an overload of operator +.
In C#6 (VS2015) string interpolation has been introduced (as described by other answers).
After about a half hour of looking through stack overflow, It dawned on me that if the use of a single quote " ' " in a comment will through the error:
SyntaxError: Non-ASCII character '\xe2' in file
After looking at the traceback i was able to locate the single quote used in my comment.
I was in a particular situation where I couldn't load a @ConfigurationProperties class due to custom file property naming. At the end the only thing that worked is (thanks @Mateusz Balbus):
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;
import org.apache.commons.io.IOUtils;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.bind.Bindable;
import org.springframework.boot.context.properties.bind.Binder;
import org.springframework.boot.env.YamlPropertySourceLoader;
import org.springframework.boot.test.context.TestConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.Resource;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@ContextConfiguration(classes = {MyTest.ContextConfiguration.class})
public class MyTest {
@TestConfiguration
public static class ContextConfiguration {
@Autowired
ApplicationContext applicationContext;
@Bean
public ConfigurationPropertiesBean myConfigurationPropertiesBean() throws IOException {
Resource resource = applicationContext.getResource("classpath:my-properties-file.yml");
YamlPropertySourceLoader sourceLoader = new YamlPropertySourceLoader();
List<PropertySource<?>> loadedSources = sourceLoader.load("yamlTestProperties", resource);
PropertySource<?> yamlTestProperties = loadedSources.get(0);
ConfigurableEnvironment configurableEnvironment = (ConfigurableEnvironment)applicationContext.getEnvironment();
configurableEnvironment.getPropertySources().addFirst(yamlTestProperties);
Binder binder = Binder.get(applicationContext.getEnvironment());
ConfigurationPropertiesBean configurationPropertiesBean = binder.bind("my-properties-file-prefix", Bindable.of(ConfigurationPropertiesBean.class)).get();
return configurationPropertiesBean;
}
}
@Autowired
ConfigurationPropertiesBean configurationPropertiesBean;
@Test
public void test() {
configurationPropertiesBean.getMyProperty();
}
}
You can find a few examples here:
// Fill the DataSet. DataSet ds = new DataSet(); ds.Locale = CultureInfo.InvariantCulture; FillDataSet(ds); DataTable contacts = ds.Tables["Contact"]; DataTable orders = ds.Tables["SalesOrderHeader"]; var query = contacts.AsEnumerable().Join(orders.AsEnumerable(), order => order.Field<Int32>("ContactID"), contact => contact.Field<Int32>("ContactID"), (contact, order) => new { ContactID = contact.Field<Int32>("ContactID"), SalesOrderID = order.Field<Int32>("SalesOrderID"), FirstName = contact.Field<string>("FirstName"), Lastname = contact.Field<string>("Lastname"), TotalDue = order.Field<decimal>("TotalDue") }); foreach (var contact_order in query) { Console.WriteLine("ContactID: {0} " + "SalesOrderID: {1} " + "FirstName: {2} " + "Lastname: {3} " + "TotalDue: {4}", contact_order.ContactID, contact_order.SalesOrderID, contact_order.FirstName, contact_order.Lastname, contact_order.TotalDue); }
Or just google for 'linq join method syntax'.
The following is a PRNG that may be fed a custom seed. Calling SeedRandom
will return a random generator function. SeedRandom
can be called with no arguments in order to seed the returned random function with the current time, or it can be called with either 1 or 2 non-negative inters as arguments in order to seed it with those integers. Due to float point accuracy seeding with only 1 value will only allow the generator to be initiated to one of 2^53 different states.
The returned random generator function takes 1 integer argument named limit
, the limit must be in the range 1 to 4294965886, the function will return a number in the range 0 to limit-1.
function SeedRandom(state1,state2){
var mod1=4294967087
var mul1=65539
var mod2=4294965887
var mul2=65537
if(typeof state1!="number"){
state1=+new Date()
}
if(typeof state2!="number"){
state2=state1
}
state1=state1%(mod1-1)+1
state2=state2%(mod2-1)+1
function random(limit){
state1=(state1*mul1)%mod1
state2=(state2*mul2)%mod2
if(state1<limit && state2<limit && state1<mod1%limit && state2<mod2%limit){
return random(limit)
}
return (state1+state2)%limit
}
return random
}
Example use:
var generator1=SeedRandom() //Seed with current time
var randomVariable=generator1(7) //Generate one of the numbers [0,1,2,3,4,5,6]
var generator2=SeedRandom(42) //Seed with a specific seed
var fixedVariable=generator2(7) //First value of this generator will always be
//1 because of the specific seed.
This generator exhibit the following properties:
mod
values being primes there is no simple pattern in the output, no matter the chosen limit. This is unlike some simpler PRNGs that exhibit some quite systematic patterns.Just wanted to summarize everything:
.unselectable {
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
<div class="unselectable" unselectable="yes" onselectstart="return false;"/>
You just need to create an offset bypass to how far you want the backwards reading to go. So, we use getcwd()
to get the path and explode (split into array) to fetch the data between $root
and the ending of the path.
function getRoot($root = "public_html") {
return explode($root, getcwd())[0].$root."/";
}
If every input asks the same question, you should use a for
loop and an array of inputs:
Scanner dd = new Scanner(System.in);
int[] vars = new int[3];
for(int i = 0; i < vars.length; i++) {
System.out.println("Enter next var: ");
vars[i] = dd.nextInt();
}
Or as Chip suggested, you can parse the input from one line:
Scanner in = new Scanner(System.in);
int[] vars = new int[3];
System.out.println("Enter "+vars.length+" vars: ");
for(int i = 0; i < vars.length; i++)
vars[i] = in.nextInt();
You were on the right track, and what you did works. This is just a nicer and more flexible way of doing things.
DotNetCoders has a starter article on it: http://www.dotnetcoders.com/web/Articles/ShowArticle.aspx?article=50. They talk about how to set up the switches in the configuration file and how to write the code, but it is pretty old (2002).
There's another article on CodeProject: A Treatise on Using Debug and Trace classes, including Exception Handling, but it's the same age.
CodeGuru has another article on custom TraceListeners: Implementing a Custom TraceListener
should be handled as a whitespace.
should be handled as two whitespaces
' ' can be handled as a non interesting whitespace
' ' + ' ' can be handled as a single ' '
If you want a formula to do it then:
=IF(ISNUMBER(SEARCH("*texts are *",A1)),LEFT(A1,FIND("texts are ",A1) + 9) & "WORD",A1)
This will do it. Change `"WORD" To the word you want.
To calculate the n-th prime, I know two main variants.
That is to count all the primes starting from 2 as you find them until you have reached the desired nth.
This can be done with different levels of sophistication and efficiency, and there are two conceptually different ways to do it. The first is
This would be accomplished by a driver function like
public static int nthPrime(int n) {
int candidate, count;
for(candidate = 2, count = 0; count < n; ++candidate) {
if (isPrime(candidate)) {
++count;
}
}
// The candidate has been incremented once after the count reached n
return candidate-1;
}
and the interesting part that determines the efficiency is the isPrime
function.
The obvious way for a primality check, given the definition of a prime as a number greater than 1 that is divisible only by 1 and by itself that we learned in school¹, is
The direct translation of the definition into code is
private static boolean isPrime(int n) {
for(int i = 2; i < n; ++i) {
if (n % i == 0) {
// We are naive, but not stupid, if
// the number has a divisor other
// than 1 or itself, we return immediately.
return false;
}
}
return true;
}
but, as you will soon discover if you try it, its simplicity is accompanied by slowness. With that primality test, you can find the 1000th prime, 7919, in a few milliseconds (about 20 on my computer), but finding the 10000th prime, 104729, takes seconds (~2.4s), the 100000th prime,1299709, several minutes (about 5), the millionth prime, 15485863, would take about eight and a half hours, the ten-millionth prime, 179424673, weeks, and so on. The runtime complexity is worse than quadratic - T(n² * log n).
So we'd like to speed the primality test up somewhat. A step that many people take is the realisation that a divisor of n
(other than n
itself) can be at most n/2
.
If we use that fact and let the trial division loop only run to n/2
instead of n-1
, how does the running time of the algorithm change?
For composite numbers, the lower loop limit doesn't change anything. For primes, the number of trial divisions is halved, so overall, the running time should be reduced by a factor somewhat smaller than 2. If you try it out, you will find that the running time is almost exactly halved, so almost all the time is spent verifying the primality of primes despite there being many more composites than primes.
Now, that didn't help much if we want to find the one-hundred-millionth prime, so we have to do better. Trying to reduce the loop limit further, let us see for what numbers the upper bound of n/2
is actually needed. If n/2
is a divisor of n
, then n/2
is an integer, in other words, n
is divisible by 2. But then the loop doesn't go past 2, so it never (except for n = 4
) reaches n/2
. Jolly good, so what's the next largest possible divisor of n
?
Why, n/3
of course. But n/3
can only be a divisor of n
if it is an integer, in other words, if n
is divisible by 3. Then the loop will exit at 3 (or before, at 2) and never reach n/3
(except for n = 9
). The next largest possible divisor ...
Hang on a minute! We have 2 <-> n/2
and 3 <-> n/3
. The divisors of n come in pairs.
If we consider the pair (d, n/d)
of corresponding divisors of n
, either d = n/d
, i.e. d = vn
, or one of them, say d
, is smaller than the other. But then d*d < d*(n/d) = n
and d < vn
. Each pair of corresponding divisors of n
contains (at least) one which does not exceed vn
.
If n
is composite, its smallest nontrivial divisor does not exceed vn
.
So we can reduce the loop limit to vn
, and that reduces the runtime complexity of the algorithm. It should now be T(n1.5 * v(log n)), but empirically it seems to scale a little bit better - however, there's not enough data to draw reliable conclusions from empirical results.
That finds the millionth prime in about 16 seconds, the ten-millionth in just under nine minutes, and it would find the one-hundred-millionth in about four and a half hours. That's still slow, but a far cry from the ten years or so it would take the naive trial division.
Since there are squares of primes and products of two close primes, like 323 = 17*19, we cannot reduce the limit for the trial division loop below vn
. Therefore, while staying with trial division, we must look for other ways to improve the algorithm now.
One easily seen thing is that no prime other than 2 is even, so we need only check odd numbers after we have taken care of 2. That doesn't make much of a difference, though, since the even numbers are the cheapest to find composite - and the bulk of time is still spent verifying the primality of primes. However, if we look at the even numbers as candidate divisors, we see that if n
is divisible by an even number, n
itself must be even, so (excepting 2) it will have been recognised as composite before division by any even number greater than 2 is attempted. So all divisions by even numbers greater than 2 that occur in the algorithm must necessarily leave a nonzero remainder. We can thus omit these divisions and check for divisibility only by 2 and the odd numbers from 3 to vn
. This halves (not quite exactly) the number of divisions required to determine a number as prime or composite and therefore the running time. That's a good start, but can we do better?
Another large family of numbers is the multiples of 3. Every third division we perform is by a multiple of 3, but if n
is divisible by one of them, it is also divisible by 3, and hence no division by 9, 15, 21, ... that we perform in our algorithm will ever leave a remainder of 0.
So, how can we skip these divisions? Well, the numbers divisible by neither 2 nor 3 are precisely the numbers of the form 6*k ± 1
. Starting from 5 (since we're only interested in numbers greater than 1), they are 5, 7, 11, 13, 17, 19, ..., the step from one to the next alternates between 2 and 4, which is easy enough, so we can use
private static boolean isPrime(int n) {
if (n % 2 == 0) return n == 2;
if (n % 3 == 0) return n == 3;
int step = 4, m = (int)Math.sqrt(n) + 1;
for(int i = 5; i < m; step = 6-step, i += step) {
if (n % i == 0) {
return false;
}
}
return true;
}
This gives us another speedup by a factor of (nearly) 1.5, so we'd need about one and a half hours to the hundred-millionth prime.
If we continue this route, the next step is the elimination of multiples of 5. The numbers coprime to 2, 3 and 5 are the numbers of the form
30*k + 1, 30*k + 7, 30*k + 11, 30*k + 13, 30*k + 17, 30*k + 19, 30*k + 23, 30*k + 29
so we'd need only divide by eight out of every thirty numbers (plus the three smallest primes). The steps from one to the next, starting from 7, cycle through 4, 2, 4, 2, 4, 6, 2, 6. That's still easy enough to implement and yields another speedup by a factor of 1.25 (minus a bit for more complicated code). Going further, the multiples of 7 would be eliminated, leaving 48 out of every 210 numbers to divide by, then 11 (480/2310), 13 (5760/30030) and so on. Each prime p
whose multiples are eliminated yields a speedup of (almost) p/(p-1)
, so the return decreases while the cost (code complexity, space for the lookup table for the steps) increases with each prime.
In general, one would stop soonish, after eliminating the multiples of maybe six or seven primes (or even fewer). Here, however, we can follow through to the very end, when the multiples of all primes have been eliminated and only the primes are left as candidate divisors. Since we are finding all primes in order, each prime is found before it is needed as a candidate divisor and can then be stored for future use. This reduces the algorithmic complexity to - if I haven't miscalculated - O(n1.5 / v(log n)). At the cost of space usage for storing the primes.
With trial division, that is as good as it gets, you have to try and divide by all primes to vn
or the first dividing n
to determine the primality of n
. That finds the hundred-millionth prime in about half an hour here.
So how about
Primes have other number-theoretic properties than the absence of nontrivial divisors which composite numbers usually don't have. Such properties, if they are fast to check, can form the basis of probabilistic or deterministic primality tests. The archetypical such property is associated with the name of Pierre de Fermat, who, in the early 17th century, found that
If
p
is a prime, thenp
is a divisor of (ap-a) for alla
.
This - Fermat's so-called 'little theorem' - is, in the equivalent formulation
Let
p
be a prime anda
not divisible byp
. Thenp
divides ap-1 - 1.
the basis of most of the widespread fast primality tests (for example Miller-Rabin) and variants or analogues of that appear in even more (e.g. Lucas-Selfridge).
So if we want to know if a not too small odd number n
is a prime (even and small numbers are efficiently treated by trial division), we can choose any number a
(> 1) which is not a multiple of n
, for example 2, and check whether n
divides an-1 - 1. Since an-1 becomes huge, that is most efficiently done by checking whether
a^(n-1) = 1 (mod n)
, i.e. by modular exponentiation. If that congruence doesn't hold, we know that n
is composite. If it holds, however, we cannot conclude that n
is prime, for example 2^340 = 1 (mod 341)
, but 341 = 11 * 31
is composite. Composite numbers n
such that a^(n-1) = 1 (mod n)
are called Fermat pseudoprimes for the base a
.
But such occurrences are rare. Given any base a > 1
, although there are an infinite number of Fermat pseudoprimes to base a
, they are much rarer than actual primes. For example, there are only 78 base-2 Fermat pseudoprimes and 76 base-3 Fermat pseudoprimes below 100000, but 9592 primes. So if one chooses an arbitrary odd n > 1
and an arbitrary base a > 1
and finds a^(n-1) = 1 (mod n)
, there's a good chance that n
is actually prime.
However, we are in a slightly different situation, we are given n
and can only choose a
. So, for an odd composite n
, for how many a
, 1 < a < n-1
can a^(n-1) = 1 (mod n)
hold?
Unfortunately, there are composite numbers - Carmichael numbers - such that the congruence holds for every a
coprime to n
. That means that to identify a Carmichael number as composite with the Fermat test, we have to pick a base that is a multiple of one of n
's prime divisors - there may not be many such multiples.
But we can strengthen the Fermat test so that composites are more reliably detected. If p
is an odd prime, write p-1 = 2*m
. Then, if 0 < a < p
,
a^(p-1) - 1 = (a^m + 1) * (a^m - 1)
and p
divides exactly one of the two factors (the two factors differ by 2, so their greatest common divisor is either 1 or 2). If m
is even, we can split a^m - 1
in the same way. Continuing, if p-1 = 2^s * k
with k
odd, write
a^(p-1) - 1 = (a^(2^(s-1)*k) + 1) * (a^(2^(s-2)*k) + 1) * ... * (a^k + 1) * (a^k - 1)
then p
divides exactly one of the factors. This gives rise to the strong Fermat test,
Let n > 2
be an odd number. Write n-1 = 2^s * k
with k
odd. Given any a
with 1 < a < n-1
, if
a^k = 1 (mod n)
ora^((2^j)*k) = -1 (mod n)
for any j
with 0 <= j < s
then n
is a strong (Fermat) probable prime for base a
. A composite strong base a
(Fermat) probable prime is called a strong (Fermat) pseudoprime for the base a
. Strong Fermat pseudoprimes are even rarer than ordinary Fermat pseudoprimes, below 1000000, there are 78498 primes, 245 base-2 Fermat pseudoprimes and only 46 base-2 strong Fermat pseudoprimes. More importantly, for any odd composite n
, there are at most (n-9)/4
bases 1 < a < n-1
for which n
is a strong Fermat pseudoprime.
So if n
is an odd composite, the probability that n
passes k
strong Fermat tests with randomly chosen bases between 1 and n-1
(exclusive bounds) is less than 1/4^k
.
A strong Fermat test takes O(log n) steps, each step involves one or two multiplications of numbers with O(log n) bits, so the complexity is O((log n)^3) with naive multiplication [for huge n
, more sophisticated multiplication algorithms can be worthwhile].
The Miller-Rabin test is the k-fold strong Fermat test with randomly chosen bases. It is a probabilistic test, but for small enough bounds, short combinations of bases are known which give a deterministic result.
Strong Fermat tests are part of the deterministic APRCL test.
It is advisable to precede such tests with trial division by the first few small primes, since divisions are comparatively cheap and that weeds out most composites.
For the problem of finding the n
th prime, in the range where testing all numbers for primality is feasible, there are known combinations of bases that make the multiple strong Fermat test correct, so that would give a faster - O(n*(log n)4) - algorithm.
For n < 2^32
, the bases 2, 7, and 61 are sufficient to verify primality. Using that, the hundred-millionth prime is found in about six minutes.
Instead of investigating the numbers in sequence and checking whether each is prime from scratch, one can also consider the whole set of relevant numbers as one piece and eliminate the multiples of a given prime in one go. This is known as the Sieve of Eratosthenes:
To find the prime numbers not exceeding N
N
k
from 2 to N
: if k
is not yet crossed off, it is prime; cross off all multiples of k
as compositesThe primes are the numbers in the list which aren't crossed off.
This algorithm is fundamentally different from trial division, although both directly use the divisibility characterisation of primes, in contrast to the Fermat test and similar tests which use other properties of primes.
In trial division, each number n
is paired with all primes not exceeding the smaller of vn
and the smallest prime divisor of n
. Since most composites have a very small prime divisor, detecting composites is cheap here on average. But testing primes is expensive, since there are relatively many primes below vn
. Although there are many more composites than primes, the cost of testing primes is so high that it completely dominates the overall running time and renders trial division a relatively slow algorithm. Trial division for all numbers less than N
takes O(N1.5 / (log N)²) steps.
In the sieve, each composite n
is paired with all of its prime divisors, but only with those. Thus there the primes are the cheap numbers, they are only ever looked at once, while the composites are more expensive, they are crossed off multiple times. One might believe that since a sieve contains many more 'expensive' numbers than 'cheap' ones, it would overall be a bad algorithm. However, a composite number does not have many distinct prime divisors - the number of distinct prime divisors of n
is bounded by log n
, but usually it is much smaller, the average of the number of distinct prime divisors of the numbers <= n
is log log n
- so even the 'expensive' numbers in the sieve are on average no more (or hardly more) expensive than the 'cheap' numbers for trial division.
Sieving up to N
, for each prime p
, there are T(N/p)
multiples to cross off, so the total number of crossings-off is T(? (N/p)) = T(N * log (log N))
. This yields much faster algorithms for finding the primes up to N
than trial division or sequential testing with the faster primality tests.
There is, however, a disadvantage to the sieve, it uses O(N)
memory. (But with a segmented sieve, that can be reduced to O(vN)
without increasing the time complexity.)
For finding the n
th prime, instead of the primes up to N
, there is also the problem that it is not known beforehand how far the sieve should reach.
The latter can be solved using the prime number theorem. The PNT says
p(x) ~ x/log x (equivalently: lim p(x)*log x/x = 1),
where p(x)
is the number of primes not exceeding x
(here and below, log
must be the natural logarithm, for the algorithmic complexities it is not important which base is chosen for the logarithms). From that, it follows that p(n) ~ n*log n
, where p(n)
is the n
th prime, and there are good upper bounds for p(n)
known from deeper analysis, in particular
n*(log n + log (log n) - 1) < p(n) < n*(log n + log (log n)), for n >= 6.
So one can use that as the sieving limit, it doesn't exceed the target far.
The O(N)
space requirement can be overcome by using a segmented sieve. One can then record the primes below vN
for O(vN / log N)
memory consumption and use segments of increasing length (O(vN) when the sieve is near N).
There are some easy improvements on the algorithm as stated above:
p
only at p²
, not at 2*p
None of these reduce the algorithmic complexity, but they all reduce the constant factors by a significant amount (as with trial division, the elimination of multiples of p
yields lesser speedup for larger p
while increasing the code complexity more than for smaller p
).
Using the first two improvements yields
// Entry k in the array represents the number 2*k+3, so we have to do
// a bit of arithmetic to get the indices right.
public static int nthPrime(int n) {
if (n < 2) return 2;
if (n == 2) return 3;
int limit, root, count = 1;
limit = (int)(n*(Math.log(n) + Math.log(Math.log(n)))) + 3;
root = (int)Math.sqrt(limit) + 1;
limit = (limit-1)/2;
root = root/2 - 1;
boolean[] sieve = new boolean[limit];
for(int i = 0; i < root; ++i) {
if (!sieve[i]) {
++count;
for(int j = 2*i*(i+3)+3, p = 2*i+3; j < limit; j += p) {
sieve[j] = true;
}
}
}
int p;
for(p = root; count < n; ++p) {
if (!sieve[p]) {
++count;
}
}
return 2*p+1;
}
which finds the hundred-millionth prime, 2038074743, in about 18 seconds. This time can be reduced to about 15 seconds (here, YMMV) by storing the flags packed, one bit per flag, instead of as boolean
s, since the reduced memory usage gives better cache locality.
Packing the flags, eliminating also multiples of 3 and using bit-twiddling for faster faster counting,
// Count number of set bits in an int
public static int popCount(int n) {
n -= (n >>> 1) & 0x55555555;
n = ((n >>> 2) & 0x33333333) + (n & 0x33333333);
n = ((n >> 4) & 0x0F0F0F0F) + (n & 0x0F0F0F0F);
return (n * 0x01010101) >> 24;
}
// Speed up counting by counting the primes per
// array slot and not individually. This yields
// another factor of about 1.24 or so.
public static int nthPrime(int n) {
if (n < 2) return 2;
if (n == 2) return 3;
if (n == 3) return 5;
int limit, root, count = 2;
limit = (int)(n*(Math.log(n) + Math.log(Math.log(n)))) + 3;
root = (int)Math.sqrt(limit);
switch(limit%6) {
case 0:
limit = 2*(limit/6) - 1;
break;
case 5:
limit = 2*(limit/6) + 1;
break;
default:
limit = 2*(limit/6);
}
switch(root%6) {
case 0:
root = 2*(root/6) - 1;
break;
case 5:
root = 2*(root/6) + 1;
break;
default:
root = 2*(root/6);
}
int dim = (limit+31) >> 5;
int[] sieve = new int[dim];
for(int i = 0; i < root; ++i) {
if ((sieve[i >> 5] & (1 << (i&31))) == 0) {
int start, s1, s2;
if ((i & 1) == 1) {
start = i*(3*i+8)+4;
s1 = 4*i+5;
s2 = 2*i+3;
} else {
start = i*(3*i+10)+7;
s1 = 2*i+3;
s2 = 4*i+7;
}
for(int j = start; j < limit; j += s2) {
sieve[j >> 5] |= 1 << (j&31);
j += s1;
if (j >= limit) break;
sieve[j >> 5] |= 1 << (j&31);
}
}
}
int i;
for(i = 0; count < n; ++i) {
count += popCount(~sieve[i]);
}
--i;
int mask = ~sieve[i];
int p;
for(p = 31; count >= n; --p) {
count -= (mask >> p) & 1;
}
return 3*(p+(i<<5))+7+(p&1);
}
finds the hundred-millionth prime in about 9 seconds, which is not unbearably long.
There are other types of prime sieves, of particular interest is the Sieve of Atkin, which exploits the fact that certain congruence classes of (rational) primes are composites in the ring of algebraic integers of some quadratic extensions of Q. Here is not the place to expand on the mathematical theory, suffice it to say that the Sieve of Atkin has lower algorithmic complexity than the Sieve of Eratosthenes and hence is preferable for large limits (for small limits, a not overly optimised Atkin sieve has higher overhead and thus can be slower than a comparably optimised Eratosthenes sieve). D. J. Bernstein's primegen library (written in C) is well optimised for numbers below 232 and finds the hundred-millionth prime (here) in about 1.1 seconds.
If we only want to find the n
th prime, there is no intrinsic value in also finding all the smaller primes. If we can skip most of them, we can save a lot of time and work. Given a good approximation a(n)
to the n
th prime p(n)
, if we have a fast way to calculate the number of primes p(a(n))
not exceeding a(n)
, we can then sieve a small range above or below a(n)
to identify the few missing or excess primes between a(n)
and p(n)
.
We have seen an easily computed fairly good approximation to p(n)
above, we could take
a(n) = n*(log n + log (log n))
for example.
A good method to compute p(x)
is the Meissel-Lehmer method, which computes p(x)
in roughly O(x^0.7)
time (the exact complexity depends on the implementation, a refinement by Lagarias, Miller, Odlyzko, Deléglise and Rivat lets one compute p(x)
in O(x2/3 / log² x) time).
Starting with the simple approximation a(n)
, we compute e(n) = p(a(n)) - n
. By the prime number theorem, the density of primes near a(n)
is about 1/log a(n)
, so we expect p(n)
to be near b(n) = a(n) - log a(n)*e(n)
and we would sieve a range slightly larger than log a(n)*e(n)
. For greater confidence that p(n)
is in the sieved range, one can increase the range by a factor of 2, say, which almost certainly will be large enough. If the range seems too large, one can iterate with the better approximation b(n)
in place of a(n)
, compute p(b(n))
and f(n) = p((b(n)) - n
. Typically, |f(n)|
will be much smaller than |e(n)|
. If f(n)
is approximately -e(n)
, c(n) = (a(n) + b(n)) / 2
will be a better approximation to p(n)
. Only in the very unlikely case that f(n)
is very close to e(n)
(and not very close to 0), finding a sufficiently good approximation to p(n)
that the final sieving stage can be done in time comparable to computing p(a(n))
becomes a problem.
In general, after one or two improvements to the initial approximation, the range to be sieved is small enough for the sieving stage to have a complexity of O(n^0.75) or better.
This method finds the hundred-millionth prime in about 40 milliseconds, and the 1012-th prime, 29996224275833, in under eight seconds.
tl;dr: Finding the n
th prime can be efficiently done, but the more efficient you want it, the more mathematics is involved.
I have Java code for most of the discussed algorithms prepared here, in case somebody wants to play around with them.
¹ Aside remark for overinterested souls: The definition of primes used in modern mathematics is different, applicable in much more general situations. If we adapt the school definition to include negative numbers - so a number is prime if it's neither 1 nor -1 and divisible only by 1, -1, itself and its negative - that defines (for integers) what is nowadays called an irreducible element of Z, however, for integers, the definitions of prime and irreducible elements coincide.
I had to run Visual Studio in Administrative Mode
to get rid of this error.
Ahah! Checkout the previous commit, then checkout the master.
git checkout HEAD^
git checkout -f master
Simplest way to solve:
view()->share('title', 'My Title Here');
Or using view Facade:
use View;
...
View::share('title', 'My Title Here');
Given an answer as high voted and views. I did find the answer with mixed of here and other links.
I have a scenario where all patient-related menu is disabled if a patient is not selected. (Refer link - how to disable a li tag using JavaScript)
//css
.disabled{
pointer-events:none;
opacity:0.4;
}
// jqvery
$("li a").addClass('disabled');
// remove .disabled when you are done
So rather than write long code, I found an interesting solution via CSS.
$(document).ready(function () {_x000D_
var PatientId ; _x000D_
//var PatientId =1; //remove to test enable i.e. patient selected_x000D_
if (typeof PatientId == "undefined" || PatientId == "" || PatientId == 0 || PatientId == null) {_x000D_
console.log(PatientId);_x000D_
$("#dvHeaderSubMenu a").each(function () { _x000D_
$(this).addClass('disabled');_x000D_
}); _x000D_
return;_x000D_
}_x000D_
})
_x000D_
.disabled{_x000D_
pointer-events:none;_x000D_
opacity:0.4;_x000D_
}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
_x000D_
<div id="dvHeaderSubMenu">_x000D_
<ul class="m-nav m-nav--inline pull-right nav-sub">_x000D_
<li class="m-nav__item">_x000D_
<a href="#" onclick="console.log('PatientMenu Clicked')" >_x000D_
<i class="m-nav__link-icon fa fa-tachometer"></i>_x000D_
Overview_x000D_
</a>_x000D_
</li>_x000D_
_x000D_
<li class="m-nav__item active">_x000D_
<a href="#" onclick="console.log('PatientMenu Clicked')" >_x000D_
<i class="m-nav__link-icon fa fa-user"></i>_x000D_
Personal_x000D_
</a>_x000D_
</li>_x000D_
<li class="m-nav__item m-dropdown m-dropdown--inline m-dropdown--arrow" data-dropdown-toggle="hover">_x000D_
<a href="#" class="m-dropdown__toggle dropdown-toggle" onclick="console.log('PatientMenu Clicked')">_x000D_
<i class="m-nav__link-icon flaticon-medical-8"></i>_x000D_
Insurance Claim_x000D_
</a>_x000D_
<div class="m-dropdown__wrapper">_x000D_
<span class="m-dropdown__arrow m-dropdown__arrow--left"></span>_x000D_
_x000D_
<ul class="m-nav">_x000D_
<li class="m-nav__item">_x000D_
<a href="#" class="m-nav__link" onclick="console.log('PatientMenu Clicked')" >_x000D_
<i class="m-nav__link-icon flaticon-toothbrush-1"></i>_x000D_
<span class="m-nav__link-text">_x000D_
Primary_x000D_
</span>_x000D_
</a>_x000D_
</li>_x000D_
<li class="m-nav__item">_x000D_
<a href="#" class="m-nav__link" onclick="console.log('PatientMenu Clicked')">_x000D_
<i class="m-nav__link-icon flaticon-interface"></i>_x000D_
<span class="m-nav__link-text">_x000D_
Secondary_x000D_
</span>_x000D_
</a>_x000D_
</li>_x000D_
<li class="m-nav__item">_x000D_
<a href="#" class="m-nav__link" onclick="console.log('PatientMenu Clicked')">_x000D_
<i class="m-nav__link-icon flaticon-healthy"></i>_x000D_
<span class="m-nav__link-text">_x000D_
Medical_x000D_
</span>_x000D_
</a>_x000D_
</li>_x000D_
</ul>_x000D_
_x000D_
_x000D_
</li>_x000D_
</ul> _x000D_
</div>
_x000D_
I think what you are trying to do is to wrap long text without spaces.
look at this :Hyphenator.js and it's demo.
This is a biased answer, but I wrote a library that may simplify the usage of Android Services, if they run locally in the same process as the app: https://github.com/germnix/acacia
Basically you define an interface annotated with @Service and its implementing class, and the library creates and binds the service, handles the connection and the background worker thread:
@Service(ServiceImpl.class)
public interface MyService {
void doProcessing(Foo aComplexParam);
}
public class ServiceImpl implements MyService {
// your implementation
}
MyService service = Acacia.createService(context, MyService.class);
service.doProcessing(foo);
<application
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
...
<service android:name="com.gmr.acacia.AcaciaService"/>
...
</application>
You can get an instance of the associated android.app.Service to hide/show persistent notifications, use your own android.app.Service and manually handle threading if you wish.
Reason is to have some value other than zero. General practice to have it short globally and long for long working scripts like parsers, crawlers, dumpers, exporting & importing scripts etc.
You need to consider the case where the user presses enter in the middle of the text, not just at the end. I'd suggest detecting the enter key in the keyup
event, as suggested, and use a regular expression to ensure the value is as you require:
<textarea id="t" rows="4" cols="80"></textarea>
<script type="text/javascript">
function formatTextArea(textArea) {
textArea.value = textArea.value.replace(/(^|\r\n|\n)([^*]|$)/g, "$1*$2");
}
window.onload = function() {
var textArea = document.getElementById("t");
textArea.onkeyup = function(evt) {
evt = evt || window.event;
if (evt.keyCode == 13) {
formatTextArea(this);
}
};
};
</script>
You can specify border separately for all borders, for example:
#testdiv{
border-left: 1px solid #000;
border-right: 2px solid #FF0;
}
You can also specify the look of the border, and use separate style for the top, right, bottom and left borders. for example:
#testdiv{
border: 1px #000;
border-style: none solid none solid;
}
If you are looking for the oldest date (minimum value), you'd sort and then take the first item returned. Sorry for the C#:
var min = myData.OrderBy( cv => cv.Date1 ).First();
The above will return the entire object. If you just want the date returned:
var min = myData.Min( cv => cv.Date1 );
Regarding which direction to go, re: Linq to Sql vs Linq to Entities, there really isn't much choice these days. Linq to Sql is no longer being developed; Linq to Entities (Entity Framework) is the recommended path by Microsoft these days.
From Microsoft Entity Framework 4 in Action (MEAP release) by Manning Press:
What about the future of LINQ to SQL?
It's not a secret that LINQ to SQL is included in the Framework 4.0 for compatibility reasons. Microsoft has clearly stated that Entity Framework is the recommended technology for data access. In the future it will be strongly improved and tightly integrated with other technologies while LINQ to SQL will only be maintained and little evolved.
%u is used for unsigned integer. Since the memory address given by the signed integer address operator %d is -12, to get this value in unsigned integer, Compiler returns the unsigned integer value for this address.
I'm going to post this answer under the following assumptions.
1) You (un)selected the checkbox on the first page and submitted the form.
2) Your building the second form and you setting the value="" true/false depending on if the previous one was checked.
3) You want the checkbox to reflect if it was checked or not before.
If this is the case then you can do something like:
var $checkbox1 = $('#checkbox1');
$checkbox1.prop('checked', $checkbox1.val() === 'true');
You may need read this https://developer.android.com/guide/topics/resources/drawable-resource.html#Shape
and below there is a Note.
Note Every corner must (initially) be provided a corner radius greater than 1, or else no corners are rounded. If you want specific corners to not be rounded, a work-around is to use android:radius to set a default corner radius greater than 1, but then override each and every corner with the values you really want, providing zero ("0dp") where you don't want rounded corners.
Try Flowing codes on Spring project
ClassPathResource resource = new ClassPathResource("fileName");
InputStream inputStream = resource.getInputStream();
Or on non spring project
ClassLoader classLoader = getClass().getClassLoader();
File file = new File(classLoader.getResource("fileName").getFile());
InputStream inputStream = new FileInputStream(file);
Try listening for events in the parent document and passing the event to a handler in the iframe document.
You can either run it like this (but this shows a windows for a while):
PowerShell.exe -windowstyle hidden { your script.. }
Or you use a helper file I created to avoid the window called PsRun.exe that does exactly that. You can download source and exe file Run scheduled tasks with WinForm GUI in PowerShell. I use it for scheduled tasks.
Edited: as Marco noted this -windowstyle parameter is available only for V2.
Probably the most simple way would be:
SELECT id
FROM table
WHERE date >= current_date - 7
For 8 days (i.e. Monday - Monday)
Quite easy
$timestring = '09:15:00';
echo date('h:i:s', strtotime($timestring) + (15 * 60));
use a cursor
ADDENDUM: [MS SQL cursor example]
declare @field1 int
declare @field2 int
declare cur CURSOR LOCAL for
select field1, field2 from sometable where someotherfield is null
open cur
fetch next from cur into @field1, @field2
while @@FETCH_STATUS = 0 BEGIN
--execute your sproc on each row
exec uspYourSproc @field1, @field2
fetch next from cur into @field1, @field2
END
close cur
deallocate cur
in MS SQL, here's an example article
note that cursors are slower than set-based operations, but faster than manual while-loops; more details in this SO question
ADDENDUM 2: if you will be processing more than just a few records, pull them into a temp table first and run the cursor over the temp table; this will prevent SQL from escalating into table-locks and speed up operation
ADDENDUM 3: and of course, if you can inline whatever your stored procedure is doing to each user ID and run the whole thing as a single SQL update statement, that would be optimal
The following code will set the media stream volume to max:
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,
audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC),
AudioManager.FLAG_SHOW_UI);
Add this line of code in your res/value/styles.xml
<item name="android:fontFamily">@font/circular_medium</item>
the entire style will look like that
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="android:fontFamily">@font/circular_medium</item>
</style>
change "circular_medium" to your own font name..
It works fine if you follow the official documentation:
import setuptools
setuptools.setup(...)
Source: https://packaging.python.org/tutorials/packaging-projects/#creating-setup-py
Bit late for an answer, but here's what I came up with using Gson:
for a jsonarray foo: [{"test": "bar"}, {"test": "bar2"}]
JsonArray foo = getJsonFromWherever();
String[] test = new String[foo.size()]
foo.forEach(x -> {test = ArrayUtils.add(test, x.get("test").getAsString());});
You can use max-height
in an inline style
attribute, as below:
<div class="panel panel-primary">
<div class="panel-heading">jhdsahfjhdfhs</div>
<div class="panel-body" style="max-height: 10;">fdoinfds sdofjohisdfj</div>
</div>
To use scrolling with content that overflows a given max-height
, you can alternatively try the following:
<div class="panel panel-primary">
<div class="panel-heading">jhdsahfjhdfhs</div>
<div class="panel-body" style="max-height: 10;overflow-y: scroll;">fdoinfds sdofjohisdfj</div>
</div>
To restrict the height to a fixed value you can use something like this.
<div class="panel panel-primary">
<div class="panel-heading">jhdsahfjhdfhs</div>
<div class="panel-body" style="min-height: 10; max-height: 10;">fdoinfds sdofjohisdfj</div>
</div>
Specify the same value for both max-height
and min-height
(either in pixels or in points – as long as it’s consistent).
You can also put the same styles in css class in a stylesheet (or a style
tag as shown below) and then include the same in your tag. See below:
Style Code:
.fixed-panel {
min-height: 10;
max-height: 10;
overflow-y: scroll;
}
Apply Style :
<div class="panel panel-primary">
<div class="panel-heading">jhdsahfjhdfhs</div>
<div class="panel-body fixed-panel">fdoinfds sdofjohisdfj</div>
</div>
Hope this helps with your need.
You can use the with_entities()
method to restrict which columns you'd like to return in the result. (documentation)
result = SomeModel.query.with_entities(SomeModel.col1, SomeModel.col2)
Depending on your requirements, you may also find deferreds useful. They allow you to return the full object but restrict the columns that come over the wire.
There is another solution.
Implement IFormatProvider
to return a ICustomFormatter
that will be passed to string.Format :
public class StringPadder : ICustomFormatter
{
public string Format(string format, object arg,
IFormatProvider formatProvider)
{
// do padding for string arguments
// use default for others
}
}
public class StringPadderFormatProvider : IFormatProvider
{
public object GetFormat(Type formatType)
{
if (formatType == typeof(ICustomFormatter))
return new StringPadder();
return null;
}
public static readonly IFormatProvider Default =
new StringPadderFormatProvider();
}
Then you can use it like this :
string.Format(StringPadderFormatProvider.Default, "->{0:x20}<-", "Hello");
RasterizeHTML is a very good project, but if you need to access the canvas it wont work on chrome. due to the use of <foreignObject>
.
If you need to access the canvas then you can use html2canvas
I am trying to find another project as html2canvas is very slow in performance
You can use the existing $filter service. I updated the fiddle above http://jsfiddle.net/gbW8Z/12/
$scope.showdetails = function(fish_id) {
var found = $filter('filter')($scope.fish, {id: fish_id}, true);
if (found.length) {
$scope.selected = JSON.stringify(found[0]);
} else {
$scope.selected = 'Not found';
}
}
Angular documentation is here http://docs.angularjs.org/api/ng.filter:filter
Logical indexing is very R-ish. Try:
x[ x$A ==5 & x$B==4.25 & x$C==4.5 , ]
Or:
subset( x, A ==5 & B==4.25 & C==4.5 )
But here's the rub, sometimes you can't or don't want to wait. For example I want to use the new support for RubyMotion which includes RubyMotion project structure support, setup of rake files, setup of configurations that are hooked to iOS Simulator etc.
RubyMine has all of these now, IDEA does not. So I would have to generate a RubyMotion project outside of IDEA, then setup an IDEA project and hook up to that source folder etc and God knows what else.
What JetBrains should do is have a licensing model that would allow me, with the purchase of IDEA to use any of other IDEs, as opposed to just relying on IDEAs plugins.
I would be willing to pay more for that i.e. say 50 bucks more for said flexibility.
The funny thing is, I was originally a RubyMine customer that upgraded to IDEA, because I did want that polyglot setup. Now I'm contemplating paying for the upgrade of RubyMine, just because I need to do RubyMotion now. Also there are other potential areas where this out of sync issue might bite me again . For example torque box workflow / deployment support.
JetBrains has good IDEs but I guess I'm a bit annoyed.
Without For loop:
Dim newColumn As New Data.DataColumn("Foo", GetType(System.String))
newColumn.DefaultValue = "Your DropDownList value"
table.Columns.Add(newColumn)
C#:
System.Data.DataColumn newColumn = new System.Data.DataColumn("Foo", typeof(System.String));
newColumn.DefaultValue = "Your DropDownList value";
table.Columns.Add(newColumn);
The option not discussed here is to insert your own data into AssemblyInfo.cs, the "AssemblyInformationalVersion" field seems appropriate - we have a couple of projects where we were doing something similar as a build step (however I'm not entirely happy with the way that works so don't really want to reproduce what we've got).
There's an article on the subject on codeproject: http://www.codeproject.com/KB/dotnet/Customizing_csproj_files.aspx
After that you have to parse the results. Suppose results are in integers, then
int testint1 = Integer.parse(test1);
Similarly others should be parsed. Now the results should be checked for two higher marks in them, by using if statement After that take out the average.
The popular GetLeftPart
solution is not supported in the PCL version of Uri
, unfortunately. GetComponents
is, however, so if you need portability, this should do the trick:
uri.GetComponents(
UriComponents.SchemeAndServer | UriComponents.UserInfo, UriFormat.Unescaped);
sys.dm_exec_procedure_stats contains the information about the execution functions, constraints and Procedures etc. But the life time of the row has a limit, The moment the execution plan is removed from the cache the entry will disappear.
Use [yourDatabaseName]
GO
SELECT
SCHEMA_NAME(sysobject.schema_id),
OBJECT_NAME(stats.object_id),
stats.last_execution_time
FROM
sys.dm_exec_procedure_stats stats
INNER JOIN sys.objects sysobject ON sysobject.object_id = stats.object_id
WHERE
sysobject.type = 'P'
ORDER BY
stats.last_execution_time DESC
This will give you the list of the procedures recently executed.
If you want to check if a perticular stored procedure executed recently
SELECT
SCHEMA_NAME(sysobject.schema_id),
OBJECT_NAME(stats.object_id),
stats.last_execution_time
FROM
sys.dm_exec_procedure_stats stats
INNER JOIN sys.objects sysobject ON sysobject.object_id = stats.object_id
WHERE
sysobject.type = 'P'
and (sysobject.object_id = object_id('schemaname.procedurename')
OR sysobject.name = 'procedurename')
ORDER BY
stats.last_execution_time DESC
One more way to do it (if you use form), note that input type is button
<input type="button" onclick="showMessage()" value="submit" />
Complete code is:
<!DOCTYPE html>
<html>
<head>
<title>HTML JavaScript output on same page</title>
<script type="text/JavaScript">
function showMessage(){
var message = document.getElementById("message").value;
display_message.innerHTML= message;
}
</script>
</head>
<body>
<form>
Enter message: <input type="text" id = "message">
<input type="button" onclick="showMessage()" value="submit" />
</form>
<p> Message is: <span id = "display_message"></span> </p>
</body>
</html>
But you can do it even without form:
<!DOCTYPE html>
<html>
<head>
<title>HTML JavaScript output on same page</title>
<script type="text/JavaScript">
function showMessage(){
var message = document.getElementById("message").value;
display_message.innerHTML= message;
}
</script>
</head>
<body>
Enter message: <input type="text" id = "message">
<input type="submit" onclick="showMessage()" value="submit" />
<p> Message is: <span id = "display_message"></span> </p>
</body>
</html>
Here you can use either submit or button:
<input type="submit" onclick="showMessage()" value="submit" />
No need to set
return false;
from JavaScript function for neither of those two examples.
Toolbar -> Settings -> Compiler
Selected compiler
drop-down menu, make sure GNU GCC Compiler
is selectedcompiler settings
tab and then the compiler flags
tab underneathHave g++ follow the C++11 ISO C++ language standard [-std=c++11]
" is checkedOK
to saveYou need to use a SimpleDateFormat
(dd-MM-yyyy
will be the format) to parse the 2 input strings to Date
objects and then use the Date#before(otherDate)
(or) Date#after(otherDate)
to compare them.
Try to implement the code yourself.
success
is the callback that is invoked when the request is successful and is part of the $.ajax
call. done
is actually part of the jqXHR
object returned by $.ajax()
, and replaces success
in jQuery 1.8.
...this is obviously performing a 'string' comparison
No - if the date/time format matches the supported format, MySQL performs implicit conversion to convert the value to a DATETIME, based on the column it is being compared to. Same thing happens with:
WHERE int_column = '1'
...where the string value of "1" is converted to an INTeger because int_column
's data type is INT, not CHAR/VARCHAR/TEXT.
If you want to explicitly convert the string to a DATETIME, the STR_TO_DATE function would be the best choice:
WHERE expires_at <= STR_TO_DATE('2010-10-15 10:00:00', '%Y-%m-%d %H:%i:%s')
The right answer for this question is "css reset".
* {
margin: 0;
padding: 0;
}
It removes all default margin and padding for every object on the page, no holds barred, regardless of browser.
Choose the port number and apply the grep in netstat command as shown below
netstat -ap | grep :7070
Console Output
tcp 0 0 :::7070 :::* LISTEN 3332/java
Kill the service based on PID ( Process Identification Number )
kill -9 3332
I'm not exactly sure what it is that you want. Do you want a TimeStamp? Then you can do something simple like:
TimeStamp ts = TimeStamp.FromTicks(value.ToUniversalTime().Ticks);
Since you named a variable epoch, do you want the Unix time equivalent of your date?
DateTime unixStart = DateTime.SpecifyKind(new DateTime(1970, 1, 1), DateTimeKind.Utc);
long epoch = (long)Math.Floor((value.ToUniversalTime() - unixStart).TotalSeconds);
you can use a string formatter to pad any integer with zeros. It acts just like C's printf
.
>>> d = datetime.date.today()
>>> '%02d' % d.month
'03'
Updated for py36: Use f-strings! For general int
s you can use the d
formatter and explicitly tell it to pad with zeros:
>>> d = datetime.date.today()
>>> f"{d.month:02d}"
'07'
But datetime
s are special and come with special formatters that are already zero padded:
>>> f"{d:%d}" # the day
'01'
>>> f"{d:%m}" # the month
'07'
ALTER TABLE `MY_TABLE` ADD COLUMN `STAGE` INTEGER UNSIGNED NOT NULL AFTER `PREV_COLUMN`;
I'd suggest getting into one of the JS libraries out there. They ensure compatibility so you can get up and running really fast. jQuery and DOJO are both really great. To do what you're trying to do in jQuery, for example, it would go something like this:
<script type="text/javascript" language="JavaScript">
$.ajax({
url: "x.html",
context: document.body,
success: function(response) {
$("#yourDiv").html(response);
}
});
</script>
Be sure that the place where you adding
<uses-permission android:name="android.permission.INTERNET"/>
is right.
You should write it like that in AndroidManifest.xml :
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.project">
<uses-permission android:name="android.permission.INTERNET"/>
Dont make my mistakes :)
Try This url with valid userid and access token:
https://graph.facebook.com/{userid}/photos?limit=20&access_token={access_token}
You can simply use jQuery UI Dialog
Example:
$(function() {_x000D_
$("#dialog").dialog();_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<html lang="en">_x000D_
_x000D_
<head>_x000D_
<meta charset="utf-8" />_x000D_
<title>jQuery UI Dialog - Default functionality</title>_x000D_
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />_x000D_
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>_x000D_
<link rel="stylesheet" href="/resources/demos/style.css" />_x000D_
</head>_x000D_
_x000D_
<body>_x000D_
<div id="dialog" title="Basic dialog">_x000D_
<p>This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the 'x' icon.</p>_x000D_
</div>_x000D_
</body>_x000D_
</html>
_x000D_
do like this
set classpath=%classpath%(ur jarfile);
Using promises for Node versions greater than 8.0.0:
const {promisify} = require('util');
const fs = require('fs');
const {join} = require('path');
const mv = promisify(fs.rename);
const moveThem = async () => {
// Move file ./bar/foo.js to ./baz/qux.js
const original = join(__dirname, 'bar/foo.js');
const target = join(__dirname, 'baz/qux.js');
await mv(original, target);
}
moveThem();
from the command line: for /R /D %1 in (*) do rd "%1"
in a batch file for /R /D %%1 in (*) do rd "%%1"
I don't know if it's documented as such, but it works in W2K, XP, and Win 7. And I don't know if it will always work, but it won't ever delete files by accident.
We can use replace
to change the values in 'mpg' to NA
that corresponds to cyl==4
.
mtcars %>%
mutate(mpg=replace(mpg, cyl==4, NA)) %>%
as.data.frame()
Check
man paste
possible followed by some command like untabify
or tabs2spaces
You could return an XmlDocument
for the ToXML
method in your class, then when you are going to add the Element with the result document just use something like:
XmlDocument returnedDocument = Your_Class.ToXML();
XmlDocument finalDocument = new XmlDocument();
XmlElement createdElement = finalDocument.CreateElement("Desired_Element_Name");
createdElement.InnerXML = docResult.InnerXML;
finalDocument.AppendChild(createdElement);
That way the entire value for "Desired_Element_Name" on your result XmlDocument will be the entire content of the returned Document.
I hope this helps.
document.getElementsByClassName('CLASSNAME')[0].style.display = 'none';
Acyually by using getElementsByClassName, it returns an array of multiple classes. Because same class name could be used in more than one instance inside same HTML page. We use array element id to target the class we need, in my case, it's first instance of the given class name.So I've used [0]
In my opinion, I think it's important to explain the why behind the need for a GROUP BY in your SQL when summing with OVER() clause and why you are getting repeated lines of data when you are expecting one row per BrandID.
Take this example: You need to aggregate the total sale price of each order line, per specific order category, between two dates, but you also need to retain individual order data in your final results. A SUM() on the SalesPrice column would not allow you to get the correct totals because it would require a GROUP BY, therefore squashing the details because you wouldn't be able to keep the individual order lines in the select statement.
Many times we see a #temp table, @table variable, or CTE filled with the sum of our data and grouped up so we can join to it again later to get a column of the sums we need. This can add processing time and extra lines of code. Instead, use OVER(PARTITION BY ()) like this:
SELECT
OrderLine,
OrderDateTime,
SalePrice,
OrderCategory,
SUM(SalePrice) OVER(PARTITION BY OrderCategory) AS SaleTotalPerCategory
FROM tblSales
WHERE OrderDateTime BETWEEN @StartDate AND @EndDate
Notice we are not grouping and we have individual order lines column selected. The PARTITION BY in the last column will return us a sales price total for each row of data in each category. What the last column essentially says is, we want the sum of the sale price (SUM(SalePrice)) over a partition of my results and by a specified category (OVER(PARTITION BY CategoryHere)).
If we remove the other columns from our select statement, and leave our final SUM() column, like this:
SELECT
SUM(SalePrice) OVER(PARTITION BY OrderCategory) AS SaleTotalPerCategory
FROM tblSales
WHERE OrderDateTime BETWEEN @StartDate AND @EndDate
The results will still repeat this sum for each row in our original result set. The reason is this method does not require a GROUP BY. If you don't need to retain individual line data, then simply SUM() without the use of OVER() and group up your data appropriately. Again, if you need an additional column with specific totals, you can use the OVER(PARTITION BY ()) method described above without additional selects to join back to.
The above is purely for explaining WHY he is getting repeated lines of the same number and to help understand what this clause provides. This method can be used in many ways and I highly encourage further reading from the documentation here:
For referential integtity :
insert into main_tbl (col1, ref1, ref2, createdby)
values ('col1_val',
(select ref1 from ref1_tbl where lookup_val = 'lookup1'),
(select ref2 from ref2_tbl where lookup_val = 'lookup2'),
'init-load'
);
Yes there is retainAll
check out this
Set<Type> intersection = new HashSet<Type>(s1);
intersection.retainAll(s2);
Your @POST
method should be accepting a JSON object instead of a string. Jersey uses JAXB to support marshaling and unmarshaling JSON objects (see the jersey docs for details). Create a class like:
@XmlRootElement
public class MyJaxBean {
@XmlElement public String param1;
@XmlElement public String param2;
}
Then your @POST
method would look like the following:
@POST @Consumes("application/json")
@Path("/create")
public void create(final MyJaxBean input) {
System.out.println("param1 = " + input.param1);
System.out.println("param2 = " + input.param2);
}
This method expects to receive JSON object as the body of the HTTP POST. JAX-RS passes the content body of the HTTP message as an unannotated parameter -- input
in this case. The actual message would look something like:
POST /create HTTP/1.1
Content-Type: application/json
Content-Length: 35
Host: www.example.com
{"param1":"hello","param2":"world"}
Using JSON in this way is quite common for obvious reasons. However, if you are generating or consuming it in something other than JavaScript, then you do have to be careful to properly escape the data. In JAX-RS, you would use a MessageBodyReader and MessageBodyWriter to implement this. I believe that Jersey already has implementations for the required types (e.g., Java primitives and JAXB wrapped classes) as well as for JSON. JAX-RS supports a number of other methods for passing data. These don't require the creation of a new class since the data is passed using simple argument passing.
HTML <FORM>
The parameters would be annotated using @FormParam:
@POST
@Path("/create")
public void create(@FormParam("param1") String param1,
@FormParam("param2") String param2) {
...
}
The browser will encode the form using "application/x-www-form-urlencoded". The JAX-RS runtime will take care of decoding the body and passing it to the method. Here's what you should see on the wire:
POST /create HTTP/1.1
Host: www.example.com
Content-Type: application/x-www-form-urlencoded;charset=UTF-8
Content-Length: 25
param1=hello¶m2=world
The content is URL encoded in this case.
If you do not know the names of the FormParam's you can do the following:
@POST @Consumes("application/x-www-form-urlencoded")
@Path("/create")
public void create(final MultivaluedMap<String, String> formParams) {
...
}
HTTP Headers
You can using the @HeaderParam annotation if you want to pass parameters via HTTP headers:
@POST
@Path("/create")
public void create(@HeaderParam("param1") String param1,
@HeaderParam("param2") String param2) {
...
}
Here's what the HTTP message would look like. Note that this POST does not have a body.
POST /create HTTP/1.1
Content-Length: 0
Host: www.example.com
param1: hello
param2: world
I wouldn't use this method for generalized parameter passing. It is really handy if you need to access the value of a particular HTTP header though.
HTTP Query Parameters
This method is primarily used with HTTP GETs but it is equally applicable to POSTs. It uses the @QueryParam annotation.
@POST
@Path("/create")
public void create(@QueryParam("param1") String param1,
@QueryParam("param2") String param2) {
...
}
Like the previous technique, passing parameters via the query string does not require a message body. Here's the HTTP message:
POST /create?param1=hello¶m2=world HTTP/1.1
Content-Length: 0
Host: www.example.com
You do have to be particularly careful to properly encode query parameters on the client side. Using query parameters can be problematic due to URL length restrictions enforced by some proxies as well as problems associated with encoding them.
HTTP Path Parameters
Path parameters are similar to query parameters except that they are embedded in the HTTP resource path. This method seems to be in favor today. There are impacts with respect to HTTP caching since the path is what really defines the HTTP resource. The code looks a little different than the others since the @Path annotation is modified and it uses @PathParam:
@POST
@Path("/create/{param1}/{param2}")
public void create(@PathParam("param1") String param1,
@PathParam("param2") String param2) {
...
}
The message is similar to the query parameter version except that the names of the parameters are not included anywhere in the message.
POST /create/hello/world HTTP/1.1
Content-Length: 0
Host: www.example.com
This method shares the same encoding woes that the query parameter version. Path segments are encoded differently so you do have to be careful there as well.
As you can see, there are pros and cons to each method. The choice is usually decided by your clients. If you are serving FORM
-based HTML pages, then use @FormParam
. If your clients are JavaScript+HTML5-based, then you will probably want to use JAXB-based serialization and JSON objects. The MessageBodyReader/Writer
implementations should take care of the necessary escaping for you so that is one fewer thing that can go wrong. If your client is Java based but does not have a good XML processor (e.g., Android), then I would probably use FORM
encoding since a content body is easier to generate and encode properly than URLs are. Hopefully this mini-wiki entry sheds some light on the various methods that JAX-RS supports.
Note: in the interest of full disclosure, I haven't actually used this feature of Jersey yet. We were tinkering with it since we have a number of JAXB+JAX-RS applications deployed and are moving into the mobile client space. JSON is a much better fit that XML on HTML5 or jQuery-based solutions.
Here's another good one: http://www.saltycrane.com/blog/2009/05/notes-using-pip-and-virtualenv-django/
This one shows how to use pip
and a pip requirements file with virtualenv; Scobal's two suggested tutorials are both very helpful but are both easy_install
-centric.
Note that none of these tutorials explain how to run a different version of Python within a virtualenv - for this, see this SO question: Use different Python version with virtualenv
You could parse /proc/net/dev.
I did it this way:
LocalTime time = LocalTime.now();
if (time.isAfter(LocalTime.of(02, 00)) && (time.isBefore(LocalTime.of(04, 00))))
{
log.info("Checking after 2AM, before 4AM!");
}
Edit:
String time1 = "01:00:00";
String time2 = "15:00:00";
LocalTime time = LocalTime.parse(time2);
if ((time.isAfter(LocalTime.of(20,11,13))) || (time.isBefore(LocalTime.of(14,49,0))))
{
System.out.println("true");
}
else
{
System.out.println("false");
}
I would recommend using the BasicPlayerAPI. It's open source, very simple and it doesn't require JavaFX. http://www.javazoom.net/jlgui/api.html
After downloading and extracting the zip-file one should add the following jar-files to the build path of the project:
Here is a minimalistic usage example:
String songName = "HungryKidsofHungary-ScatteredDiamonds.mp3";
String pathToMp3 = System.getProperty("user.dir") +"/"+ songName;
BasicPlayer player = new BasicPlayer();
try {
player.open(new URL("file:///" + pathToMp3));
player.play();
} catch (BasicPlayerException | MalformedURLException e) {
e.printStackTrace();
}
Required imports:
import java.net.MalformedURLException;
import java.net.URL;
import javazoom.jlgui.basicplayer.BasicPlayer;
import javazoom.jlgui.basicplayer.BasicPlayerException;
That's all you need to start playing music. The Player is starting and managing his own playback thread and provides play, pause, resume, stop and seek functionality.
For a more advanced usage you may take a look at the jlGui Music Player. It's an open source WinAmp clone: http://www.javazoom.net/jlgui/jlgui.html
The first class to look at would be PlayerUI (inside the package javazoom.jlgui.player.amp). It demonstrates the advanced features of the BasicPlayer pretty well.
What you probably want is for...of
, a relatively new construct built for the express purpose of enumerating the values of iterable objects:
let myArray = ["a","b","c","d"];_x000D_
for (let item of myArray) {_x000D_
console.log(item);_x000D_
}
_x000D_
... as distinct from for...in
, which enumerates property names (presumably1 numeric indices in the case of arrays). Your loop displayed unexpected results because you didn't use the property names to get the corresponding values via bracket notation... but you could have:
let myArray = ["a","b","c","d"];_x000D_
for (let key in myArray) {_x000D_
let value = myArray[key]; // get the value by key_x000D_
console.log("key: %o, value: %o", key, value);_x000D_
}
_x000D_
1 Unfortunately, someone may have added enumerable properties to the array or its prototype chain which are not numeric indices... or they may have assigned an index leaving unassigned indices in the interim range. The issues are explained pretty well here. The main takeaway is that it's best to loop explicitly from 0
to array.length - 1
rather than using for...in
.
So, this is not (as I'd originally thought) an academic question, i.e.:
Without regard for practicality, is it possible to avoid
length
when iterating over an array?
According to your comment (emphasis mine):
[...] why do I need to calculate the size of an array whereas the interpreter can know it.
You have a misguided aversion to Array.length
. It's not calculated on the fly; it's updated whenever the length of the array changes. You're not going to see performance gains by avoiding it (apart from caching the array length rather than accessing the property):
Now, even if you did get some marginal performance increase, I doubt it would be enough to justify the risk of dealing with the aforementioned issues.
Sub LoopRange()
Dim rCell As Range
Dim rRng As Range
Set rRng = Sheet1.Range("A1:A6")
For Each rCell In rRng.Cells
Debug.Print rCell.Address, rCell.Value
Next rCell
End Sub
I know this has already been answered, but I wanted to share a potentially better looking way to call Popen via the use of from x import x
and functions:
from subprocess import PIPE, Popen
def cmdline(command):
process = Popen(
args=command,
stdout=PIPE,
shell=True
)
return process.communicate()[0]
print cmdline("cat /etc/services")
print cmdline('ls')
print cmdline('rpm -qa | grep "php"')
print cmdline('nslookup google.com')
Using the path itself didn't work for me.
Here's what finally worked for me on MacOS:
cd ~/projects
git clone file:///Users/me/projects/myawesomerepo myawesomerepocopy
This also worked:
git clone file://localhost/Users/me/projects/myawesomerepo myawesomerepocopy
The path itself worked if I did this:
git clone --local myawesomerepo myawesomerepocopy
DateTime TaskStart = DateTime.Parse(dr["TaskStart"].ToString());
Due to the way Node.js loads modules, node_modules
can be anywhere in the path to your source code. For example, put your source at /worker/src
and your package.json
in /worker
, so /worker/node_modules
is where they're installed.
The way I've handled it so far: in UITextFieldDelegate
func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool
{
// text hasn't changed yet, you have to compute the text AFTER the edit yourself
let updatedString = (textField.text as NSString?)?.stringByReplacingCharactersInRange(range, withString: string)
// do whatever you need with this updated string (your code)
// always return true so that changes propagate
return true
}
Swift4 version
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
let updatedString = (textField.text as NSString?)?.replacingCharacters(in: range, with: string)
return true
}
An expansion and useful addition to egmackenzie's "arp -a" solution for Windows -
Windows Example searching for my iPhone on the WiFi network
(pre: iPhone WiFi disabled)
See below for example:
Here is a nice writeup on the use of 'arp -d' here if interested -
This question was asked a long ago, while the RFC 2616 was still hanging around. Some answers to this question are based in such document, which is no longer relevant nowadays. Quoting Mark Nottingham who, at the time of writing, co-chairs the IETF HTTP and QUIC Working Groups:
Don’t use RFC2616. Delete it from your hard drives, bookmarks, and burn (or responsibly recycle) any copies that are printed out.
The old RFC 2616 has been supplanted by the following documents that, together, define the HTTP/1.1 protocol:
So I aim to provide an answer based in the RFC 7231 which is the current reference for HTTP/1.1 status codes.
302
status codeA response with 302
is a common way of performing URL redirection. Along with the 302
status code, the response should include a Location
header with a different URI. Such header will be parsed by the user agent and then perform the redirection:
Web browsers may change from POST
to GET
in the subsequent request. If this behavior is undesired, the 307
(Temporary Redirect) status code can be used instead.
This is how the 302
status code is defined in the RFC 7231:
The
302
(Found) status code indicates that the target resource resides temporarily under a different URI. Since the redirection might be altered on occasion, the client ought to continue to use the effective request URI for future requests.The server SHOULD generate a
Location
header field in the response containing a URI reference for the different URI. The user agent MAY use theLocation
field value for automatic redirection. The server's response payload usually contains a short hypertext note with a hyperlink to the different URI(s).Note: For historical reasons, a user agent MAY change the request method from
POST
toGET
for the subsequent request. If this behavior is undesired, the307
(Temporary Redirect) status code can be used instead.
According to MDN web docs from Mozilla, a typical use case for 302
is:
The Web page is temporarily not available for reasons that have not been unforeseen. That way, search engines don't update their links.
The RFC 7231 defines the following status codes for redirection:
The RFC 7238 was created to define another status code for redirection:
308
(Permanent Redirect)Refer to this answer for further details.
Serialization is the process of converting an object into a stream of bytes to store the object or transmit it to memory, a database, or a file.
How serialization works
This illustration shows the overall process of serialization:
The object is serialized to a stream that carries the data. The stream may also have information about the object's type, such as its version, culture, and assembly name. From that stream, the object can be stored in a database, a file, or memory.
Details in Microsoft Docs.
If both methods have same parameter types, but different return type than it is not possible. From Java Language Specification, Java SE 8 Edition, §8.4.2. Method Signature:
Two methods or constructors, M and N, have the same signature if they have the same name, the same type parameters (if any) (§8.4.4), and, after adapting the formal parameter types of N to the the type parameters of M, the same formal parameter types.
If both methods has different parameter types (so, they have different signature), then it is possible. It is called overloading.
It could be done by getting the page title by Selenium and do assertion by using TestNG.
Import Assert class in the import section:
`import org.testng.Assert;`
Create a WebDriver object:
WebDriver driver=new FirefoxDriver();
Apply this to assert the title of the page:
Assert.assertEquals("Expected page title", driver.getTitle());
Both the answers provided above work fine.
json_decode($jsondata, true);
true turns all properties to array (sequential or not)
You need a semicolon after font-family: Arial, Helvetica, sans-serif
. This will make your updated code the following:
<!DOCTYPE>
<html>
<head>
<title>DIV Font</title>
<style>
.my_text
{
font-family: Arial, Helvetica, sans-serif;
font-size: 40px;
font-weight: bold;
}
</style>
</head>
<body>
<div class="my_text">some text</div>
</body>
</html>
Active Directory isn't just an implementation of LDAP by Microsoft, that is only a small part of what AD is. Active Directory is (in an overly simplified way) a service that provides LDAP based authentication with Kerberos based Authorization.
Of course their LDAP and Kerberos implementations in AD are not exactly 100% interoperable with other LDAP/Kerberos implementations...
you can use following CSS code..
body {
margin:0;
padding:0;
height: 100%;
width: 100%;
}
table {
border-collapse: collapse; /* make simple 1px lines borders if border defined */
}
tr {
width: 100%;
}
.outer-container {
background-color: #ccc;
top:0;
left: 0;
right: 300px;
bottom:40px;
overflow:hidden;
}
.inner-container {
width: 100%;
height: 100%;
position: relative;
}
.table-header {
float:left;
width: 100%;
}
.table-body {
float:left;
height: 100%;
width: inherit;
}
.header-cell {
background-color: yellow;
text-align: left;
height: 40px;
}
.body-cell {
background-color: blue;
text-align: left;
}
.col1, .col3, .col4, .col5 {
width:120px;
min-width: 120px;
}
.col2 {
min-width: 300px;
}
I know this post is really old, but I have to reply because although BalusC's answer is marked as correct, it's not completely correct.
You have to write the query adding "[]" to foo like this:
foo[]=val1&foo[]=val2&foo[]=val3
In terminal, log into MySQL as root. You may have created a root password when you installed MySQL for the first time or the password could be blank, in which case you can just press ENTER when prompted for a password.
sudo mysql -p -u root
Now add a new MySQL user with the username of your choice. In this example we are calling it pmauser (for phpmyadmin user). Make sure to replace password_here with your own. You can generate a password here. The % symbol here tells MySQL to allow this user to log in from anywhere remotely. If you wanted heightened security, you could replace this with an IP address.
CREATE USER 'pmauser'@'%' IDENTIFIED BY 'password_here';
Now we will grant superuser privilege to our new user.
GRANT ALL PRIVILEGES ON *.* TO 'pmauser'@'%' WITH GRANT OPTION;
Then go to config.inc.php ( in ubuntu, /etc/phpmyadmin/config.inc.php )
/* User for advanced features */
$cfg['Servers'][$i]['controluser'] = 'pmauser';
$cfg['Servers'][$i]['controlpass'] = 'password_here';
$(document).ready(function () {
$('.dates li a').click(function (e) {
$('.dates li a').removeClass('active');
var $parent = $(this);
if (!$parent.hasClass('active')) {
$parent.addClass('active');
}
e.preventDefault();
});
});
As others said wc -l
is the best solution, but for future reference you can use Perl:
perl -lne 'END { print $. }'
$.
contains line number and END
block will execute at the end of script.
Itertools repeat combined with list extend.
from itertools import repeat
l = []
l.extend(repeat(x, 100))
Nothing wrong with Ryan's answer, but for people who came here looking for how to maintain a one-class-per-file structure while still using ES6 namespaces correctly please refer to this helpful resource from Microsoft.
One thing that's unclear to me after reading the doc is: how to import the entire (merged) module with a single import
.
Edit Circling back to update this answer. A few approaches to namespacing emerge in TS.
All module classes in one file.
export namespace Shapes {
export class Triangle {}
export class Square {}
}
Import files into namespace, and reassign
import { Triangle as _Triangle } from './triangle';
import { Square as _Square } from './square';
export namespace Shapes {
export const Triangle = _Triangle;
export const Square = _Square;
}
Barrels
// ./shapes/index.ts
export { Triangle } from './triangle';
export { Square } from './square';
// in importing file:
import * as Shapes from './shapes/index.ts';
// by node module convention, you can ignore '/index.ts':
import * as Shapes from './shapes';
let myTriangle = new Shapes.Triangle();
A final consideration. You could namespace each file
// triangle.ts
export namespace Shapes {
export class Triangle {}
}
// square.ts
export namespace Shapes {
export class Square {}
}
But as one imports two classes from the same namespace, TS will complain there's a duplicate identifier. The only solution as this time is to then alias the namespace.
import { Shapes } from './square';
import { Shapes as _Shapes } from './triangle';
// ugh
let myTriangle = new _Shapes.Shapes.Triangle();
This aliasing is absolutely abhorrent, so don't do it. You're better off with an approach above. Personally, I prefer the 'barrel'.
I Found that applying ionic framework (ionic.min.cs) after bootstrap coursing this issue for me.
The closest legal equivalent to illegal syntax mentioned in question is:
select * from myTable m
where not exists (
select 1
from table(sys.ku$_vcnt('Done', 'Finished except', 'In Progress')) patterns
where m.status like patterns.column_value || '%'
)
Both mine and @Sethionic's answer make possible to list patterns dynamically (just by choosing other source than auxiliar sys.whatever
table).
Note, if we had to search pattern inside string (rather than from the beginning) and database contained for example status = 'Done In Progress'
, then
my solution (modified to like '%' || patterns.column_value || '%'
) would still generate one row for given record, whileas
the @Sethionic's solution (modified to another auxiliar join before a
) would produce multiple rows for each pattern occurence.
Not judging which is better, just be aware of differences and choose which better fits your need.
You have strange expectations. If you gave the chain of arguments that led you to them, we might spot the flaw in them. As it is, I can only give a short primer on generics, hoping to touch on the points you might have misunderstood.
ArrayList<? extends Object>
is an ArrayList whose type parameter is known to be Object
or a subtype thereof. (Yes, extends in type bounds has a meaning other than direct subclass). Since only reference types can be type parameters, this is actually equivalent to ArrayList<?>
.
That is, you can put an ArrayList<String>
into a variable declared with ArrayList<?>
. That's why a1.add(3)
is a compile time error. a1
's declared type permits a1
to be an ArrayList<String>
, to which no Integer
can be added.
Clearly, an ArrayList<?>
is not very useful, as you can only insert null into it. That might be why the Java Spec forbids it:
It is a compile-time error if any of the type arguments used in a class instance creation expression are wildcard type arguments
ArrayList<ArrayList<?>>
in contrast is a functional data type. You can add all kinds of ArrayLists into it, and retrieve them. And since ArrayList<?>
only contains but is not a wildcard type, the above rule does not apply.
Simple and fast solution to count total months between 2 dates. If you want to get only different months, not counting the one that is in From date - just remove +1 from code.
public static int GetTotalMonths(DateTime From, DateTime Till)
{
int MonthDiff = 0;
for (int i = 0; i < 12; i++)
{
if (From.AddMonths(i).Month == Till.Month)
{
MonthDiff = i + 1;
break;
}
}
return MonthDiff;
}
If you're using .NET 4.0 you should be able to allow these urls via the web.config
<system.web>
<httpRuntime
requestPathInvalidCharacters="<,>,%,&,:,\,?" />
</system.web>
Note, I've just removed the asterisk (*), the original default string is:
<httpRuntime
requestPathInvalidCharacters="<,>,*,%,&,:,\,?" />
See this question for more details.
Use s1.equalsIgnoreCase(s2)
: https://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html#equalsIgnoreCase(java.lang.String).
As mentioned in the excellent answer by janoside, you need to construct the JSON string and set it as a StringEntity
.
To construct the JSON string, you can use any library or method you are comfortable with. Jackson library is one easy example:
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
ObjectMapper mapper = new ObjectMapper();
ObjectNode node = mapper.createObjectNode();
node.put("name", "value"); // repeat as needed
String JSON_STRING = node.toString();
postMethod.setEntity(new StringEntity(JSON_STRING, ContentType.APPLICATION_JSON));
The function match
works on vectors:
x <- sample(1:10)
x
# [1] 4 5 9 3 8 1 6 10 7 2
match(c(4,8),x)
# [1] 1 5
match
only returns the first encounter of a match, as you requested. It returns the position in the second argument of the values in the first argument.
For multiple matching, %in%
is the way to go:
x <- sample(1:4,10,replace=TRUE)
x
# [1] 3 4 3 3 2 3 1 1 2 2
which(x %in% c(2,4))
# [1] 2 5 9 10
%in%
returns a logical vector as long as the first argument, with a TRUE
if that value can be found in the second argument and a FALSE
otherwise.
In Windows 10, it's still 8191 characters...at least on my machine.
It just cuts off any text after 8191 characters. Well, actually, I got 8196 characters, and after 8196, then it just won't let me type any more.
Here's a script that will test how long of a statement you can use. Well, assuming you have gawk/awk installed.
echo rem this is a test of how long of a line that a .cmd script can generate >testbat.bat
gawk 'BEGIN {printf "echo -----";for (i=10;i^<=100000;i +=10) printf "%%06d----",i;print;print "pause";}' >>testbat.bat
testbat.bat
From a Java Game Engine:
/**
* Converts a given Image into a BufferedImage
*
* @param img The Image to be converted
* @return The converted BufferedImage
*/
public static BufferedImage toBufferedImage(Image img)
{
if (img instanceof BufferedImage)
{
return (BufferedImage) img;
}
// Create a buffered image with transparency
BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
// Draw the image on to the buffered image
Graphics2D bGr = bimage.createGraphics();
bGr.drawImage(img, 0, 0, null);
bGr.dispose();
// Return the buffered image
return bimage;
}
anUnicode.encode('encoding') results in a string object and can be called on a unicode object
aString.decode('encoding') results in an unicode object and can be called on a string, encoded in given encoding.
Some more explanations:
You can create some unicode object, which doesn't have any encoding set. The way it is stored by Python in memory is none of your concern. You can search it, split it and call any string manipulating function you like.
But there comes a time, when you'd like to print your unicode object to console or into some text file. So you have to encode it (for example - in UTF-8), you call encode('utf-8') and you get a string with '\u<someNumber>' inside, which is perfectly printable.
Then, again - you'd like to do the opposite - read string encoded in UTF-8 and treat it as an Unicode, so the \u360 would be one character, not 5. Then you decode a string (with selected encoding) and get brand new object of the unicode type.
Just as a side note - you can select some pervert encoding, like 'zip', 'base64', 'rot' and some of them will convert from string to string, but I believe the most common case is one that involves UTF-8/UTF-16 and string.
Short answer is no.
XAMPP is normally built around a specific PHP version to ensure plugins and modules are all compatible and working correctly.
If your project specifically needs PHP 5.3 - the cleanest method is simply reinstalling an older version of XAMPP with PHP 5.3 packaged into it.
XAMPP 1.7.7 was their last update before moving off PHP 5.3.
I came across this thread while trying to figure out why the dates weren't being cleared in IE7/IE8.
It has to do with the fact that IE8 and older require a second parameter for the Array.prototype.splice() method.
Here's the original code in bootstrap.datepicker.js:
clear: function(){
this.splice(0);
},
Adding the second parameter resolved my issue:
clear: function(){
this.splice(0,this.length);
},
Best way is use Empty
Dim i as Integer
For i = 1 to 1000
If CPT_DB.Cells(i, 1) > 100 Then
CPT_DB.Cells(i, 2) = CPT_DB.Cells(i, 1)
Else
CPT_DB.Cells(i, 2) = Empty //**********************
End If
Next i
The main rule here is that:
The selectors which are applicable during compilation of a component template are determined by the module that declares that component, and the transitive closure of the exports of that module's imports.
So, try to export it:
@NgModule({
declarations: [TaskCardComponent],
imports: [MdCardModule],
exports: [TaskCardComponent] <== this line
})
export class TaskModule{}
What should I export?
Export declarable classes that components in other modules should be able to reference in their templates. These are your public classes. If you don't export a class, it stays private, visible only to other component declared in this module.
The minute you create a new module, lazy or not, any new module and you declare anything into it, that new module has a clean state(as Ward Bell said in https://devchat.tv/adv-in-angular/119-aia-avoiding-common-pitfalls-in-angular2)
Angular creates transitive module for each of @NgModule
s.
This module collects directives that either imported from another module(if transitive module of imported module has exported directives) or declared in current module.
When angular compiles template that belongs to module X
it is used those directives that had been collected in X.transitiveModule.directives.
compiledTemplate = new CompiledTemplate(
false, compMeta.type, compMeta, ngModule, ngModule.transitiveModule.directives);
https://github.com/angular/angular/blob/4.2.x/packages/compiler/src/jit/compiler.ts#L250-L251
This way according to the picture above
YComponent
can't use ZComponent
in its template because directives
array of Transitive module Y
doesn't contain ZComponent
because YModule
has not imported ZModule
whose transitive module contains ZComponent
in exportedDirectives
array.
Within XComponent
template we can use ZComponent
because Transitive module X
has directives array that contains ZComponent
because
XModule
imports module (YModule
) that exports module (ZModule
) that exports directive ZComponent
Within AppComponent
template we can't use XComponent
because AppModule
imports XModule
but XModule
doesn't exports XComponent
.
See also
Other than caching every hour, or every week, you may cache according to file data.
Example (in PHP):
<script src="js/my_script.js?v=<?=md5_file('js/my_script.js')?>"></script>
or even use file modification time:
<script src="js/my_script.js?v=<?=filemtime('js/my_script.js')?>"></script>
import React, { Component } from "react";
class RadionButtons extends Component {
constructor(props) {
super(props);
this.state = {
// gender : "" , // use this one if you don't wanna any default value for gender
gender: "male" // we are using this state to store the value of the radio button and also use to display the active radio button
};
this.handleRadioChange = this.handleRadioChange.bind(this); // we require access to the state of component so we have to bind our function
}
// this function is called whenever you change the radion button
handleRadioChange(event) {
// set the new value of checked radion button to state using setState function which is async funtion
this.setState({
gender: event.target.value
});
}
render() {
return (
<div>
<div check>
<input
type="radio"
value="male" // this is te value which will be picked up after radio button change
checked={this.state.gender === "male"} // when this is true it show the male radio button in checked
onChange={this.handleRadioChange} // whenever it changes from checked to uncheck or via-versa it goes to the handleRadioChange function
/>
<span
style={{ marginLeft: "5px" }} // inline style in reactjs
>Male</span>
</div>
<div check>
<input
type="radio"
value="female"
checked={this.state.gender === "female"}
onChange={this.handleRadioChange}
/>
<span style={{ marginLeft: "5px" }}>Female</span>
</div>
</div>
);
}
}
export default RadionButtons;
There is the $.parseXML
function for this: http://api.jquery.com/jQuery.parseXML/
You can use it like this:
var xml = $.parseXML(yourfile.xml),
$xml = $( xml ),
$test = $xml.find('test');
console.log($test.text());
If you really want an object, you need a plugin for that. This plugin for instance, will convert your XML to JSON: http://www.fyneworks.com/jquery/xml-to-json/
Just for the record:
DirectoryInfo di = new DirectoryInfo(currentDirName);
FileInfo[] smFiles = di.GetFiles("*.txt");
string fileNames = String.Join(", ", smFiles.Select<FileInfo, string>(fi => Path.GetFileNameWithoutExtension(fi.FullName)));
This way you don't use StringBuilder
but String.Join()
. Also please remark that Path.GetFileNameWithoutExtension()
needs a full path (fi.FullName
), not fi.Name
as I saw in one of the other answers.
You likely have Hyper-V enabled. The manual installer provides this detailed notice when it refuses to install on a Windows with it on.
This computer does not support Intel Virtualization Technology (VT-x) or it is being exclusively used by Hyper-V. HAXM cannot be installed. Please ensure Hyper-V is disabled in Windows Features, or refer to the Intel HAXM documentation for more information.
Because you defined the struct
as consisting of char
arrays, the two strings are the structure and freeing the struct
is sufficient, nor is there a way to free the struct
but keep the arrays. For that case you would want to do something like struct { char *firstName, *lastName; }
, but then you need to allocate memory for the names separately and handle the question of when to free that memory.
Aside: Is there a reason you want to keep the names after the struct
has been freed?
git diff master --compact-summary
Output is:
src/app/components/common/sidebar/toolbar/toolbar.component.html | 2 +-
src/app/components/common/sidebar/toolbar/toolbar.component.scss | 2 --
This is exactly what you need. Same format as when you making commit or pulling new commits from remote.
PS: That's wired that nobody answered this way.
Concerning the answer by BoltClock and John, I personally had issues with the initial keyword when using IE11. It works fine in Chrome, but in IE it seems to have no effect.
According to this answer IE does not support the initial keyword: Div display:initial not working as intended in ie10 and chrome 29
I tried setting it blank instead as suggested here: how to revert back to normal after display:none for table row
This worked and was good enough for my scenario. Of course to set the real initial value the above answer is the only good one I could find.
I use this, it works fine.
from django.utils import simplejson
from django.http import HttpResponse
def some_view(request):
to_json = {
"key1": "value1",
"key2": "value2"
}
return HttpResponse(simplejson.dumps(to_json), mimetype='application/json')
Alternative:
from django.utils import simplejson
class JsonResponse(HttpResponse):
"""
JSON response
"""
def __init__(self, content, mimetype='application/json', status=None, content_type=None):
super(JsonResponse, self).__init__(
content=simplejson.dumps(content),
mimetype=mimetype,
status=status,
content_type=content_type,
)
In Django 1.7 JsonResponse objects have been added to the Django framework itself which makes this task even easier:
from django.http import JsonResponse
def some_view(request):
return JsonResponse({"key": "value"})
As of 2016 I used datetimepicker like this:
$(function () {
$('#date_box').datetimepicker({
format: 'YYYY-MM-DD hh:mm'
});
});
You can use change()
$("input[type='checkbox'].abc").change(function(){
var a = $("input[type='checkbox'].abc");
if(a.length == a.filter(":checked").length){
alert('all checked');
}
});
All this will do is verify that the total number of .abc
checkboxes matches the total number of .abc:checked
.
Code example on jsfiddle.
you have many HTML and java script mistakes includes:
tag, using non UTF-8 encoding for form submission, no need,...
You must use document.forms.FORMNAME
or document.forms[0]
for first appear form in page
Corrected:
function validate_frm_new_user_request()_x000D_
{_x000D_
alert('test');_x000D_
var valid = true;_x000D_
_x000D_
if ( document.forms.frm_new_user_request.u_userid.value == "" )_x000D_
{_x000D_
alert ( "Please enter your valid ISID Information." );_x000D_
document.forms.frm_new_user_request.u_userid.focus();_x000D_
valid = false;_x000D_
console.log("FALSE::Empty Value ");_x000D_
}_x000D_
return valid;_x000D_
}
_x000D_
<html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">_x000D_
<head>_x000D_
<title></title>_x000D_
<meta content="text/html;charset=UTF-8" http-equiv="content-type" />_x000D_
_x000D_
_x000D_
</head>_x000D_
<body>_x000D_
<form method="post" action="" name="frm_new_user_request" id="frm_new_user_request" onsubmit="return validate_frm_new_user_request();">_x000D_
<center>_x000D_
<table>_x000D_
_x000D_
<tr align="left">_x000D_
<td><Label>ISID<em>*:</Label><input maxlength="15" id="u_userid" name="u_userid" size="20" type="text"/></td>_x000D_
</tr>_x000D_
_x000D_
<tr>_x000D_
<td align="center" colspan="4">_x000D_
<input type="image" src="btn.png" border="0" ALT="Create New Request">_x000D_
_x000D_
</td>_x000D_
</tr>_x000D_
</table>_x000D_
</form>_x000D_
</body>_x000D_
</html>
_x000D_
The question was raised years ago, with the older version it was a little hard to get...but now this question has a very easy answer.
<div class="btn btn-outline-primary btn-block">Button text here</div>
If you want to get a feel for FRP, you could start with the old Fran tutorial from 1998, which has animated illustrations. For papers, start with Functional Reactive Animation and then follow up on links on the publications link on my home page and the FRP link on the Haskell wiki.
Personally, I like to think about what FRP means before addressing how it might be implemented. (Code without a specification is an answer without a question and thus "not even wrong".) So I don't describe FRP in representation/implementation terms as Thomas K does in another answer (graphs, nodes, edges, firing, execution, etc). There are many possible implementation styles, but no implementation says what FRP is.
I do resonate with Laurence G's simple description that FRP is about "datatypes that represent a value 'over time' ". Conventional imperative programming captures these dynamic values only indirectly, through state and mutations. The complete history (past, present, future) has no first class representation. Moreover, only discretely evolving values can be (indirectly) captured, since the imperative paradigm is temporally discrete. In contrast, FRP captures these evolving values directly and has no difficulty with continuously evolving values.
FRP is also unusual in that it is concurrent without running afoul of the theoretical & pragmatic rats' nest that plagues imperative concurrency. Semantically, FRP's concurrency is fine-grained, determinate, and continuous. (I'm talking about meaning, not implementation. An implementation may or may not involve concurrency or parallelism.) Semantic determinacy is very important for reasoning, both rigorous and informal. While concurrency adds enormous complexity to imperative programming (due to nondeterministic interleaving), it is effortless in FRP.
So, what is FRP? You could have invented it yourself. Start with these ideas:
Dynamic/evolving values (i.e., values "over time") are first class values in themselves. You can define them and combine them, pass them into & out of functions. I called these things "behaviors".
Behaviors are built up out of a few primitives, like constant (static) behaviors and time (like a clock), and then with sequential and parallel combination. n behaviors are combined by applying an n-ary function (on static values), "point-wise", i.e., continuously over time.
To account for discrete phenomena, have another type (family) of "events", each of which has a stream (finite or infinite) of occurrences. Each occurrence has an associated time and value.
To come up with the compositional vocabulary out of which all behaviors and events can be built, play with some examples. Keep deconstructing into pieces that are more general/simple.
So that you know you're on solid ground, give the whole model a compositional foundation, using the technique of denotational semantics, which just means that (a) each type has a corresponding simple & precise mathematical type of "meanings", and (b) each primitive and operator has a simple & precise meaning as a function of the meanings of the constituents. Never, ever mix implementation considerations into your exploration process. If this description is gibberish to you, consult (a) Denotational design with type class morphisms, (b) Push-pull functional reactive programming (ignoring the implementation bits), and (c) the Denotational Semantics Haskell wikibooks page. Beware that denotational semantics has two parts, from its two founders Christopher Strachey and Dana Scott: the easier & more useful Strachey part and the harder and less useful (for software design) Scott part.
If you stick with these principles, I expect you'll get something more-or-less in the spirit of FRP.
Where did I get these principles? In software design, I always ask the same question: "what does it mean?". Denotational semantics gave me a precise framework for this question, and one that fits my aesthetics (unlike operational or axiomatic semantics, both of which leave me unsatisfied). So I asked myself what is behavior? I soon realized that the temporally discrete nature of imperative computation is an accommodation to a particular style of machine, rather than a natural description of behavior itself. The simplest precise description of behavior I can think of is simply "function of (continuous) time", so that's my model. Delightfully, this model handles continuous, deterministic concurrency with ease and grace.
It's been quite a challenge to implement this model correctly and efficiently, but that's another story.
You can also do it with a one liner like this:
[...((add, set) => add(set, add))((set, add) => set.size < 8 ? add(set.add(Math.floor(Math.random()*100) + 1), add) : set, new Set())]
Not possible. How is the Map supposed to know which subclass of Animal it's going to get, given only a String key?
The only way this would be possible is if each Animal accepted only one type of friend (then it could be a parameter of the Animal class), or of the callFriend() method got a type parameter. But it really looks like you're missing the point of inheritance: it's that you can only treat subclasses uniformly when using exclusively the superclass methods.
The EntityManager.flush()
operation can be used the write all changes to the database before the transaction is committed. By default JPA does not normally write changes to the database until the transaction is committed. This is normally desirable as it avoids database access, resources and locks until required. It also allows database writes to be ordered, and batched for optimal database access, and to maintain integrity constraints and avoid deadlocks. This means that when you call persist, merge, or remove the database DML INSERT
, UPDATE
, DELETE
is not executed, until commit, or until a flush is triggered.
It's just a convention some programmers use to make it clear when you're manipulating a member of the class or some other kind of variable (parameters, local to the function, etc). Another convention that's also in wide use for member variables is prefixing the name with 'm_'.
Anyway, these are only conventions and you will not find a single source for all of them. They're a matter of style and each programming team, project or company has their own (or even don't have any).
Thread safe simply means that it may be used from multiple threads at the same time without causing problems. This can mean that access to any resources are synchronized, or whatever.
Wrote a tutorial so that you can animate your activity's in and out,
Enjoy:
There is also the use of the -> operator for copying. For Example:
-(id)copyWithZone:(NSZone*)zone
{
MYClass* copy = [MYClass new];
copy->_property1 = self->_property1;
...
copy->_propertyN = self->_propertyN;
return copy;
}
The reasoning here is the resulting copied object should reflect the state of the original object. The "." operator could introduce side effects as this one calls getters which in turn may contain logic.
In general, on GitHub, 1 repository = 1 project. For example: https://github.com/spring-projects/spring-boot . But it isn't a hard rule.
1 repository = many projects. For example: https://github.com/donhuvy/java_examples
1 projects = many repositories. For example: https://github.com/zendframework/zendframework (1 project named Zend Framework 3 has 61 + 1 = 62 repositories, don't believe? let count Zend Frameworks' modules + main repository)
I totally agree with @Brandon Ibbotson's comment:
A GitHub repository is just a "directory" where folders and files can exist.
mylist<-list(1,2,3)
mylist<-c(mylist,list(5))
So we can easily append the element/object using the above code
After playing around with a few things, I managed to figure this out myself.
First of all, this will convert a dataURI to a Blob:
function dataURItoBlob(dataURI) {
// convert base64/URLEncoded data component to raw binary data held in a string
var byteString;
if (dataURI.split(',')[0].indexOf('base64') >= 0)
byteString = atob(dataURI.split(',')[1]);
else
byteString = unescape(dataURI.split(',')[1]);
// separate out the mime component
var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
// write the bytes of the string to a typed array
var ia = new Uint8Array(byteString.length);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
return new Blob([ia], {type:mimeString});
}
From there, appending the data to a form such that it will be uploaded as a file is easy:
var dataURL = canvas.toDataURL('image/jpeg', 0.5);
var blob = dataURItoBlob(dataURL);
var fd = new FormData(document.forms[0]);
fd.append("canvasImage", blob);
if you run something like this in a thread and save the ffmpeg_time property in a property of a method so you can access it, it would work very nice I get outputs like this: output be like if you use threading in tkinter
input = 'path/input_file.mp4'
output = 'path/input_file.mp4'
command = "ffmpeg -y -v quiet -stats -i \"" + str(input) + "\" -metadata title=\"@alaa_sanatisharif\" -preset ultrafast -vcodec copy -r 50 -vsync 1 -async 1 \"" + output + "\""
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, shell=True)
for line in self.process.stdout:
reg = re.search('\d\d:\d\d:\d\d', line)
ffmpeg_time = reg.group(0) if reg else ''
print(ffmpeg_time)
You want:
if (document.getElementById('customx').value === ""){
//do something
}
The value
property will give you a string value and you need to compare that against an empty string.
Not surprisingly, this error can arise when another process is listening on the desired port. This happened today when I started an instance of the Apache Web server, listening on its default port (80), having forgotten that I already had IIS 7 running, and listening on that port. This is well explained in Port 80 is being used by SYSTEM (PID 4), what is that? Better yet, that article points to Stop http.sys from listening on port 80 in Windows, which explains a very simple way to resolve it, with just a tad of help from an elevated command prompt and a one-line edit of my hosts file.
I know i am answering late. But this code may useful for some one. So i am attaching it here.
Use the following java code to download the videos from YouTube.
package com.mycompany.ytd;
import java.io.File;
import java.net.URL;
import com.github.axet.vget.VGet;
/**
*
* @author Manindar
*/
public class YTD {
public static void main(String[] args) {
try {
String url = "https://www.youtube.com/watch?v=s10ARdfQUOY";
String path = "D:\\Manindar\\YTD\\";
VGet v = new VGet(new URL(url), new File(path));
v.download();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
Add the below Dependency in your POM.XML file
<dependency>
<groupId>com.github.axet</groupId>
<artifactId>vget</artifactId>
<version>1.1.33</version>
</dependency>
Hope this will be useful.
%s
and %d
are Format Specifiers or placeholders for formatting strings/decimals/floats etc.
MOST common used Format specifier:
%s
: string
%d
: decimals
%f
: float
Self explanatory code:
name = "Gandalf"
extendedName = "the Grey"
age = 84
IQ = 149.9
print('type(name):', type(name)) #type(name): <class 'str'>
print('type(age):', type(age)) #type(age): <class 'int'>
print('type(IQ):', type(IQ)) #type(IQ): <class 'float'>
print('%s %s\'s age is %d with incredible IQ of %f ' %(name, extendedName, age, IQ)) #Gandalf the Grey's age is 84 with incredible IQ of 149.900000
#Same output can be printed in following ways:
print ('{0} {1}\'s age is {2} with incredible IQ of {3} '.format(name, extendedName, age, IQ)) # with help of older method
print ('{} {}\'s age is {} with incredible IQ of {} '.format(name, extendedName, age, IQ)) # with help of older method
print("Multiplication of %d and %f is %f" %(age, IQ, age*IQ)) #Multiplication of 84 and 149.900000 is 12591.600000
#storing formattings in string
sub1 = "python string!"
sub2 = "an arg"
a = "i am a %s" % sub1
b = "i am a {0}".format(sub1)
c = "with %(kwarg)s!" % {'kwarg':sub2}
d = "with {kwarg}!".format(kwarg=sub2)
print(a) # "i am a python string!"
print(b) # "i am a python string!"
print(c) # "with an arg!"
print(d) # "with an arg!"
The other answers are good. Read those first. But I'll add one other reason to use YAML sometimes: git.
Increasingly, many programming projects use git repositories for distribution and archival. And, while a git repo's history can equally store JSON and YAML files, the "diff" method used for tracking and displaying changes to a file is line-oriented. Since YAML is forced to be line-oriented, any small changes in a YAML file are easier to see by a human.
It is true, of course, that JSON files can be "made pretty" by sorting the strings/keys and adding indentation. But this is not the default and I'm lazy.
Personally, I generally use JSON for system-to-system interaction. I often use YAML for config files, static files, and tracked files. (I also generally avoid adding YAML relational anchors. Life is too short to hunt down loops.)
Also, if speed and space are really a concern, I don't use either. You might want to look at BSON.
Scale a bitmap with a target maximum size and width, while maintaining aspect ratio:
int maxHeight = 2000;
int maxWidth = 2000;
float scale = Math.min(((float)maxHeight / bitmap.getWidth()), ((float)maxWidth / bitmap.getHeight()));
Matrix matrix = new Matrix();
matrix.postScale(scale, scale);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
According to this MSDN blog: https://blogs.msdn.microsoft.com/manishagarwal/2005/09/28/resolving-file-references-in-team-build-part-2/
There is a search order for assemblies when building. The search order is as follows:
So, if the desired assembly is found by HintPath, but an alternate assembly can be found using ReferencePath, it will prefer the ReferencePath'd assembly to the HintPath'd one.
Knockout.js validation is handy but it is not robust. You always have to create server side validation replica. In your case (as you use knockout.js) you are sending JSON data to server and back asynchronously, so you can make user think that he sees client side validation, but in fact it would be asynchronous server side validation.
Take a look at example here upida.cloudapp.net:8080/org.upida.example.knockout/order/create?clientId=1 This is a "Create Order" link. Try to click "save", and play with products. This example is done using upida library (there are spring mvc version and asp.net mvc of this library) from codeplex.
Just as simple as this:
$("#myElem").show("slow").delay(5000).hide("slow");
by small modification of Joshep's code...You can use this code which seems like right corner folded down as per your requirement.
div {
height: 300px;
background: red;
position: relative;
}
div:before {
content: '';
position: absolute;
top: 0; right: 0;
border-top: 80px solid white;
border-left: 80px solid blue;
width: 0;
}
Use array_unique().
Example:
$array = array(1, 2, 2, 3);
$array = array_unique($array); // Array is now (1, 2, 3)
A slightly different way to think about it that might be useful for someone... A class method is used in a superclass to define how that method should behave when it's called by different child classes. A static method is used when we want to return the same thing regardless of the child class that we are calling.
Check the Sources-> Scripts in browser Inspect tool. Sometimes multiple jQuery files can be referring. In ASP.NET MVC, this usually happens when the layout page already has a jQuery reference.
No, it is not RESTful. The only reason why you should be putting a verb (force_delete
) into the URI is if you would need to overload GET/POST methods in an environment where PUT/DELETE methods are not available. Judging from your use of the DELETE method, this is not the case.
HTTP error code 409/Conflict
should be used for situations where there is a conflict which prevents the RESTful service to perform the operation, but there is still a chance that the user might be able to resolve the conflict himself. A pre-deletion confirmation (where there are no real conflicts which would prevent deletion) is not a conflict per se, as nothing prevents the API from performing the requested operation.
As Alex said (I don't know who downvoted him, he is correct), this should be handled in the UI, because a RESTful service as such just processes requests and should be therefore stateless (i.e. it must not rely on confirmations by holding any server-side information about of a request).
Two examples how to do this in UI would be to:
(*) Please note that HTML versions prior to 5 do not support PUT and DELETE HTTP methods natively, however most modern browsers can do these two methods via AJAX calls. See this thread for details about cross-browser support.
Update (based on additional investigation and discussions):
The scenario where the service would require the force_delete=true
flag to be present violates the uniform interface as defined in Roy Fielding's dissertation. Also, as per HTTP RFC, the DELETE method may be overridden on the origin server (client), implying that this is not done on the target server (service).
So once the service receives a DELETE request, it should process it without needing any additional confirmation (regardless if the service actually performs the operation).
As per latest Ansible Version 2.5, to check if a variable is defined and depending upon this if you want to run any task, use undefined
keyword.
tasks:
- shell: echo "I've got '{{ foo }}' and am not afraid to use it!"
when: foo is defined
- fail: msg="Bailing out. this play requires 'bar'"
when: bar is undefined
You can use curl
or wget
to retrieve the raw data, or you can use w3m -dump
to have a nice text representation of a web page.
$ foo=$(w3m -dump http://www.example.com/); echo $foo
You have reached this web page by typing "example.com", "example.net","example.org" or "example.edu" into your web browser. These domain names are reserved for use in documentation and are not available for registration. See RFC 2606, Section 3.
#!/usr/bin/perl -w
use strict;
my $path = $0;
$path =~ s/\.\///g;
if ($path =~ /\//){
if ($path =~ /^\//){
$path =~ /^((\/[^\/]+){1,}\/)[^\/]+$/;
$path = $1;
}
else {
$path =~ /^(([^\/]+\/){1,})[^\/]+$/;
my $path_b = $1;
my $path_a = `pwd`;
chop($path_a);
$path = $path_a."/".$path_b;
}
}
else{
$path = `pwd`;
chop($path);
$path.="/";
}
$path =~ s/\/\//\//g;
print "\n$path\n";
:DD
I got this error, and it was because I had the arguments in the wrong order:
java maui.main.Examples tagging -jar maui-1.0.jar
java -jar maui-1.0.jar maui.main.Examples tagging
All kernels will use some assembly code as well.
if you want to do screen capture from Java code in Android app AFAIK you must have Root provileges.
What is the best practice on where the logic for the @foreach should be at?
Nowhere, just get rid of it. You could use editor or display templates.
So for example:
@foreach (var item in Model.Foos)
{
<div>@item.Bar</div>
}
could perfectly fine be replaced by a display template:
@Html.DisplayFor(x => x.Foos)
and then you will define the corresponding display template (if you don't like the default one). So you would define a reusable template ~/Views/Shared/DisplayTemplates/Foo.cshtml
which will automatically be rendered by the framework for each element of the Foos collection (IEnumerable<Foo> Foos { get; set; }
):
@model Foo
<div>@Model.Bar</div>
Obviously exactly the same conventions apply for editor templates which should be used in case you want to show some input fields allowing you to edit the view model in contrast to just displaying it as readonly.
Things are much easier nowadays: the builtin Snippet Generator supports the 'build' step (I don't know since when though).
Extending on what 'Happytime harry' said, be sure to use the .data() jquery function to store the timeout id. This is so that you can retrieve the timeout id very easily when the 'mouseenter' is triggered on that same element later, allowing you to eliminate the trigger for your tooltip to disappear.
A cleaner alternative would be to use a Dictionary
to handle parameters. They are key-value pairs after all.
private static readonly HttpClient httpclient;
static MyClassName()
{
// HttpClient is intended to be instantiated once and re-used throughout the life of an application.
// Instantiating an HttpClient class for every request will exhaust the number of sockets available under heavy loads.
// This will result in SocketException errors.
// https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient?view=netframework-4.7.1
httpclient = new HttpClient();
}
var url = "http://myserver/method";
var parameters = new Dictionary<string, string> { { "param1", "1" }, { "param2", "2" } };
var encodedContent = new FormUrlEncodedContent (parameters);
var response = await httpclient.PostAsync (url, encodedContent).ConfigureAwait (false);
if (response.StatusCode == HttpStatusCode.OK) {
// Do something with response. Example get content:
// var responseContent = await response.Content.ReadAsStringAsync ().ConfigureAwait (false);
}
Also dont forget to Dispose()
httpclient, if you dont use the keyword using
As stated in the Remarks section of the HttpClient class in the Microsoft docs, HttpClient should be instantiated once and re-used.
Edit:
You may want to look into response.EnsureSuccessStatusCode();
instead of if (response.StatusCode == HttpStatusCode.OK)
.
You may want to keep your httpclient and dont Dispose()
it. See: Do HttpClient and HttpClientHandler have to be disposed?
Edit:
Do not worry about using .ConfigureAwait(false) in .NET Core. For more details look at https://blog.stephencleary.com/2017/03/aspnetcore-synchronization-context.html
You are plotting all your images on one axis. What you want ist to get a handle for each axis individually and plot your images there. Like so:
fig = plt.figure()
ax1 = fig.add_subplot(2,2,1)
ax1.imshow(...)
ax2 = fig.add_subplot(2,2,2)
ax2.imshow(...)
ax3 = fig.add_subplot(2,2,3)
ax3.imshow(...)
ax4 = fig.add_subplot(2,2,4)
ax4.imshow(...)
For more info have a look here: http://matplotlib.org/examples/pylab_examples/subplots_demo.html
For complex layouts, you should consider using gridspec: http://matplotlib.org/users/gridspec.html
On Django 1.2, {{ form.data.field }} and {{ form.field.data }} are all OK, but not {{ form.field.value }}.
As others said, {{ form.field.value }} is Django 1.3+ only, but there's no specification in https://docs.djangoproject.com/en/1.3/topics/forms/. It can be found in https://docs.djangoproject.com/en/1.4/topics/forms/.
If that kind of thing does not already exist, you can make an NSString category:
@interface NSString (TrucBiduleChoseAdditions)
- (BOOL)isEmpty;
@end
@implementation NSString (TrucBiduleChoseAdditions)
- (BOOL)isEmpty {
return self == nil || [@"" isEqualToString:self];
}
@end
Instead of handcranking your models try using something like the Json2csharp.com website. Paste In an example JSON response, the fuller the better and then pull in the resultant generated classes. This, at least, takes away some moving parts, will get you the shape of the JSON in csharp giving the serialiser an easier time and you shouldnt have to add attributes.
Just get it working and then make amendments to your class names, to conform to your naming conventions, and add in attributes later.
EDIT: Ok after a little messing around I have successfully deserialised the result into a List of Job (I used Json2csharp.com to create the class for me)
public class Job
{
public string id { get; set; }
public string position_title { get; set; }
public string organization_name { get; set; }
public string rate_interval_code { get; set; }
public int minimum { get; set; }
public int maximum { get; set; }
public string start_date { get; set; }
public string end_date { get; set; }
public List<string> locations { get; set; }
public string url { get; set; }
}
And an edit to your code:
List<Job> model = null;
var client = new HttpClient();
var task = client.GetAsync("http://api.usa.gov/jobs/search.json?query=nursing+jobs")
.ContinueWith((taskwithresponse) =>
{
var response = taskwithresponse.Result;
var jsonString = response.Content.ReadAsStringAsync();
jsonString.Wait();
model = JsonConvert.DeserializeObject<List<Job>>(jsonString.Result);
});
task.Wait();
This means you can get rid of your containing object. Its worth noting that this isn't a Task related issue but rather a deserialisation issue.
EDIT 2:
There is a way to take a JSON object and generate classes in Visual Studio. Simply copy the JSON of choice and then Edit> Paste Special > Paste JSON as Classes. A whole page is devoted to this here:
http://blog.codeinside.eu/2014/09/08/Visual-Studio-2013-Paste-Special-JSON-And-Xml/