You can use File.WriteAllBytes
Just found a post Atomic vs. Non-Atomic Operations to be very helpful to me.
"An operation acting on shared memory is atomic if it completes in a single step relative to other threads.
When an atomic store is performed on a shared memory, no other thread can observe the modification half-complete.
When an atomic load is performed on a shared variable, it reads the entire value as it appeared at a single moment in time."
public static void main(String[] args) {
String name = "Harendra";
System.out.println(String.valueOf(name).replaceAll(".(?!$)", "$0 "));
System.out.println(String.valueOf(name).replaceAll(".", "$0 "));
}
This gives output as following use any of the above:
H a r e n d r a
H a r e n d r a
It should not effect the load time much since you are overriding parts of the base stylesheet.
Here are some best practices I personally follow:
!important
if possible. That can override some important styles from the base CSS files.I found it so much easier to do this:
1) Edit the frame to have the content inside (with 9patch tool).
2) Place the ImageView
inside a Linearlayout
, and set the frame background or colour you want as the background of the Linearlayout
. As you set the frame to have the content inside itself, your ImageView
will be inside the frame (right where you set the content with the 9patch tool).
Static type systems seek to eliminate certain errors statically, inspecting the program without running it and attempting to prove soundness in certain respects. Some type systems are able to catch more errors than others. For example, C# can eliminate null pointer exceptions when used properly, whereas Java has no such power. Twelf has a type system which actually guarantees that proofs will terminate, "solving" the halting problem.
However, no type system is perfect. In order to eliminate a particular class of errors, they must also reject certain perfectly valid programs which violate the rules. This is why Twelf doesn't really solve the halting problem, it just avoids it by throwing out a large number of perfectly valid proofs which happen to terminate in odd ways. Likewise, Java's type system rejects Clojure's PersistentVector
implementation due to its use of heterogeneous arrays. It works at runtime, but the type system cannot verify it.
For that reason, most type systems provide "escapes", ways to override the static checker. For most languages, these take the form of casting, though some (like C# and Haskell) have entire modes which are marked as "unsafe".
Subjectively, I like static typing. Implemented properly (hint: not Java), a static type system can be a huge help in weeding out errors before they crash the production system. Dynamically typed languages tend to require more unit testing, which is tedious at the best of times. Also, statically typed languages can have certain features which are either impossible or unsafe in dynamic type systems (implicit conversions spring to mind). It's all a question of requirements and subjective taste. I would no more build the next Eclipse in Ruby than I would attempt to write a backup script in Assembly or patch a kernel using Java.
Oh, and people who say that "x typing is 10 times more productive than y typing" are simply blowing smoke. Dynamic typing may "feel" faster in many cases, but it loses ground once you actually try to make your fancy application run. Likewise, static typing may seem like it's the perfect safety net, but one look at some of the more complicated generic type definitions in Java sends most developers scurrying for eye blinders. Even with type systems and productivity, there is no silver bullet.
Final note: don't worry about performance when comparing static with dynamic typing. Modern JITs like V8 and TraceMonkey are coming dangerously-close to static language performance. Also, the fact that Java actually compiles down to an inherently dynamic intermediate language should be a hint that for most cases, dynamic typing isn't the huge performance-killer that some people make it out to be.
Bit of a long shot, but on a lab a while back, we had a situation where a SQL Server appeared unresponsive, not because we had spiked the CPU or anything we could track within SQL Server, it appeared operational to all tests but connections failed under some load.
The issue turned out to be due to the volume of traffic against the server meant we were triggering the in built windows Syn Attack Flood Protection within Windows. Annoyingly when you hit this, there is no logged message within windows server, or within SQL - you only see the symtpoms which are connections failing to be made - this is because windows slows down on accepting the messages and let's a queue build. From the connection standpoint, the server appears to not respond when it should (it doesn't even acknowledge the message arrived)
http://msdn.microsoft.com/en-us/library/ee377084(v=bts.10).aspx
Scroll down to SynAttackProtect and you will see the default in windows server 2003 sp1 onwards was to enable this feature by default. It is a DDOS protection mechanism in effect, and the lack of logging that it is triggering makes it incredibly difficult to detect when your server does this.
It took 3 days within the MS lab before it was figured out.
You mentioned 100 conenctions, we had an app that constantly connected, ran queries and then disconnected, it did not hold the connections open. This meant that we had multiple threads on each machine connectiong doing this, 10 machines, multiple threads per machine, and it was considered enough different connections consistently being made / dropped to trigger the defense.
Whether you are at that level (since it is not a clearly defined threshold by MS) is hard to say.
I'm partial to C#. I ran the following using linqpad. But it could just as easily be compiled with csc and ran through the called from the command line.
Don't forget to add excel packages to namespace.
void Main()
{
var oExcelApp = (Microsoft.Office.Interop.Excel.Application)System.Runtime.InteropServices.Marshal.GetActiveObject("Excel.Application");
try{
var WB = oExcelApp.ActiveWorkbook;
var WS = (Worksheet)WB.ActiveSheet;
((string)((Range)WS.Cells[1,1]).Value).Dump("Cell Value"); //cel A1 val
oExcelApp.Run("test_macro_name").Dump("macro");
}
finally{
if(oExcelApp != null)
System.Runtime.InteropServices.Marshal.ReleaseComObject(oExcelApp);
oExcelApp = null;
}
}
$time = '09:15 AM';
$chunks = explode(':', $time);
if (strpos( $time, 'AM') === false && $chunks[0] !== '12') {
$chunks[0] = $chunks[0] + 12;
} else if (strpos( $time, 'PM') === false && $chunks[0] == '12') {
$chunks[0] = '00';
}
echo preg_replace('/\s[A-Z]+/s', '', implode(':', $chunks));
You can mix up the post argument by using body and path variable for simpler data types:
@RequestMapping(value = "new-trade/portfolio/{portfolioId}", method = RequestMethod.POST)
public ResponseEntity<List<String>> newTrade(@RequestBody Trade trade, @PathVariable long portfolioId) {
...
}
foreach($array as $elementKey => $element) {
foreach($element as $valueKey => $value) {
if($valueKey == 'id' && $value == 'searched_value'){
//delete this particular object from the $array
unset($array[$elementKey]);
}
}
}
Some minor additional content for setting programmatically:
Label textLabel = new Label() {
AutoSize = false,
TextAlign = ContentAlignment.MiddleCenter,
Dock = DockStyle.None,
Left = 10,
Width = myDialog.Width - 10
};
Dockstyle and Content alignment may differ from your needs. For example, for a simple label on a wpf form I use DockStyle.None.
Method can not return anonymous type. It has to be same as the type defined in method return type. Check the signature of GetProjectForCombo and see what return type you have specified.
Create a class ProjectInfo with required properties and then in new expression create object of ProjectInfo type.
class ProjectInfo
{
public string Name {get; set; }
public long Id {get; set; }
}
public List<ProjectInfo> GetProjectForCombo()
{
using (MyDataContext db = new MyDataContext (DBHelper.GetConnectionString()))
{
var query = from pro in db.Projects
select new ProjectInfo(){ Name = pro.ProjectName, Id = pro.ProjectId };
return query.ToList();
}
}
Here is a simple way using the date function:
select *
from hockey_stats
where date(game_date) between date('2012-11-03') and date('2012-11-05')
order by game_date desc
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
// if we can scroll pass the event to the superclass
if (mScrollable) return super.onInterceptTouchEvent(ev);
// only continue to handle the touch event if scrolling enabled
return mScrollable; // mScrollable is always false at this point
default:
return super.onInterceptTouchEvent(ev);
}
}
O(n) is big O notation used for writing time complexity of an algorithm. When you add up the number of executions in an algoritm you'll get an expression in result like 2N+2, in this expression N is the dominating term(the term having largest effect on expression if its value increases or decreases). Now O(N) is the time comlexity while N is dominating term. Example
For i= 1 to n;
j= 0;
while(j<=n);
j=j+1;
here total number of executions for inner loop are n+1 and total number of executions for outer loop are n(n+1)/2, so total number of executions for whole algorithm are n+1+n(n+1/2) = (n^2+3n)/2. here n^2 is the dominating term so the time complexity for this algorithm is O(n^2)
This error sometimes occurs in a situation like this:
#ifndef NAN
#include <stdlib.h>
#define NAN (strtod("NAN",NULL))
#endif
static void init_random(uint32_t initseed=0)
{
if (initseed==0)
{
struct timeval tv;
gettimeofday(&tv, NULL);
seed=(uint32_t) (4223517*getpid()*tv.tv_sec*tv.tv_usec);
}
else
seed=initseed;
#if !defined(CYGWIN) && !defined(__INTERIX)
//seed=42
//SG_SPRINT("initializing random number generator with %d (seed size %d)\n", seed, RNG_SEED_SIZE)
initstate(seed, CMath::rand_state, RNG_SEED_SIZE);
#endif
}
If the following code lines not run in the run-time:
#ifndef NAN
#include <stdlib.h>
#define NAN (strtod("NAN",NULL))
#endif
you will face with an error in your code like something as follows; because initstate is placed in the stdlib.h file and it's not included:
In file included from ../../shogun/features/SubsetStack.h:14:0,
from ../../shogun/features/Features.h:21,
from ../../shogun/ui/SGInterface.h:7,
from MatlabInterface.h:15,
from matlabInterface.cpp:7:
../../shogun/mathematics/Math.h: In static member function 'static void shogun::CMath::init_random(uint32_t)':
../../shogun/mathematics/Math.h:459:52: error: 'initstate' was not declared in this scope
Your fundamental problem is that grep
works one line at a time - so it cannot find a SELECT statement spread across lines.
Your second problem is that the regex you are using doesn't deal with the complexity of what can appear between SELECT and FROM - in particular, it omits commas, full stops (periods) and blanks, but also quotes and anything that can be inside a quoted string.
I would likely go with a Perl-based solution, having Perl read 'paragraphs' at a time and applying a regex to that. The downside is having to deal with the recursive search - there are modules to do that, of course, including the core module File::Find.
In outline, for a single file:
$/ = "\n\n"; # Paragraphs
while (<>)
{
if ($_ =~ m/SELECT.*customerName.*FROM/mi)
{
printf file name
go to next file
}
}
That needs to be wrapped into a sub that is then invoked by the methods of File::Find.
Double-check that you haven't enabled backface-visibility
on any of the containing elements, as that will wreck position: fixed
. For me, I was using a CSS3 animation library...
Either:
row.name
inside the apply(..., axis=1)
call:df = pandas.DataFrame([[1,2,3],[4,5,6]], columns=['a','b','c'], index=['x','y'])
a b c
x 1 2 3
y 4 5 6
df.apply(lambda row: row.name, axis=1)
x x
y y
iterrows()
(slower)DataFrame.iterrows() allows you to iterate over rows, and access their index:
for idx, row in df.iterrows():
...
Or you could figure out the exacting amount of hours and minutes and have that displayed by puttin it into the timer app that already exist in every iphone :)
Try this :
driver.findElement(By.id("email")).clear();
driver.findElement(By.id("email")).sendKeys("[email protected]");
To add to @user3303020 answer and output the search results into a file, you can run
Get-ChildItem V:\MyFolder -name -recurse *.CopyForbuild.bat > path_to_results_filename.txt
It may be easier to search for the correct file that way.
If you are using the HttpURLConnection
, call setConnectTimeout()
as described here:
URL url = new URL(myurl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(CONNECT_TIMEOUT);
I was getting the same problem on Spring Tool Suite 3.2 and changed the version of jstl to 1.2 (from 1.1.2) manually when adding it to the dependency list, and the error got disappeared.
with open('writing_file.json', 'w') as w:
with open('reading_file.json', 'r') as r:
for line in r:
element = json.loads(line.strip())
if 'hours' in element:
del element['hours']
w.write(json.dumps(element))
this is the method i use..
You'll see people using the Timer class to do this. Unfortunately, it isn't always accurate. Your best bet is to get the system time when the user enters input, calculate a target system time, and check if the system time has exceeded the target system time. If it has, then break out of the loop.
You'll want to use the System.Diagnostics.Process.Kill method. You can obtain the process you want using System.Diagnostics.Proccess.GetProcessesByName.
Examples have already been posted here, but I found that the non-.exe version worked better, so something like:
foreach ( Process p in System.Diagnostics.Process.GetProcessesByName("winword") )
{
try
{
p.Kill();
p.WaitForExit(); // possibly with a timeout
}
catch ( Win32Exception winException )
{
// process was terminating or can't be terminated - deal with it
}
catch ( InvalidOperationException invalidException )
{
// process has already exited - might be able to let this one go
}
}
You probably don't have to deal with NotSupportedException
, which suggests that the process is remote.
the values should be (MACOS):
GOROOT="/usr/local/go" --> all binaries file core go
GOPATH="/Applications/proyectos/go" --> the route to workspace (custom workspace)
I faced similar issue today and issues was really very small
app.directive('removeFriend', function($scope) {
return {
restrict: 'E',
templateUrl: 'removeFriend.html',
controller: function($scope) {
$scope.removing = false;
$scope.startRemove = function() {
$scope.removing = true;
}
$scope.cancelRemove = function() {
$scope.removing = false;
}
$scope.removeFriend = function(friend) {
var idx = $scope.user.friends.indexOf(friend)
if (idx > -1) {
$scope.user.friends.splice(idx, 1);
}
}
}
}
});
If you observe the above block, in the first line you will observe I injected $scope by mistake which is incorrect. I removed that unwanted dependency to solve the issue.
app.directive('removeFriend', function() {
return {
restrict: 'E',
templateUrl: 'removeFriend.html',
controller: function($scope) {
$scope.removing = false;
$scope.startRemove = function() {
$scope.removing = true;
}
$scope.cancelRemove = function() {
$scope.removing = false;
}
$scope.removeFriend = function(friend) {
var idx = $scope.user.friends.indexOf(friend)
if (idx > -1) {
$scope.user.friends.splice(idx, 1);
}
}
}
}
});
To quote Wikipedia:
ACID (atomicity, consistency, isolation, durability) is a set of properties that guarantee database transactions are processed reliably.
A DBMS that supports transactions will strive to support all of these properties - any commercial DBMS (as well as several open-source DBMSs) provide full ACID 'support' - although it's often possible (for example, with varying isolation levels in MSSQL) to lessen the ACIDness - thus losing the guarantee of fully transactional behaviour.
It seems like a much better solution to just use BitsTransfer, it seems to come OOTB on most Windows machines with PowerShell 2.0 or greater.
Import-Module BitsTransfer
Start-BitsTransfer -Source $Source -Destination $Destination -Description "Backup" -DisplayName "Backup"
I looked into this a bit more and the actual problem seems to be with assigning initial
to page width
under the print
media rule. It seems like in Chrome width: initial
on the .page
element results in scaling of the page content if no specific length value is defined for width
on any of the parent elements (width: initial
in this case resolves to width: auto
... but actually any value smaller than the size defined under the @page
rule causes the same issue).
So not only the content is now too long for the page (by about 2cm
), but also the page padding will be slightly more than the initial 2cm
and so on (it seems to render the contents under width: auto
to the width of ~196mm
and then scale the whole content up to the width of 210mm
~ but strangely exactly the same scaling factor is applied to contents with any width smaller than 210mm
).
To fix this problem you can simply in the print
media rule assign the A4 paper width and hight to html, body
or directly to .page
and in this case avoid the initial
keyword.
@page {
size: A4;
margin: 0;
}
@media print {
html, body {
width: 210mm;
height: 297mm;
}
/* ... the rest of the rules ... */
}
This seems to keep everything else the way it is in your original CSS and fix the problem in Chrome (tested in different versions of Chrome under Windows, OS X and Ubuntu).
My understanding from my testing (and the PostgreSQL dox) is that the quotes need to be done differently from the other answers, and should also include "day" like this:
SELECT Table.date
FROM Table
WHERE date > current_date - interval '10 day';
Demonstrated here (you should be able to run this on any Postgres db):
SELECT DISTINCT current_date,
current_date - interval '10' day,
current_date - interval '10 days'
FROM pg_language;
Result:
2013-03-01 2013-03-01 00:00:00 2013-02-19 00:00:00
I've found that using:
<img src="file://null">
will not make a request and validates correctly.
The browsers will simply block the access to the local file system.
But there might be an error displayed in console log in Chrome for example:
Not allowed to load local resource: file://null/
You have to unlock your Mutex at sometime...
Or if "NOT EXISTS" are not implemented
SELECT *
FROM B
WHERE (SELECT count(*) FROM A WHERE A.ID = B.ID) < 1
I know its a bit late for answer but this is the first link appearing in google, and none of the above solutions were working for me.
I was having the same problem i.e after uploading build from application loader it stuck in processing. This happened many times, after hours of head banging I found that as soon as I close the application loader on my Mac, build status was changed :)
I hope this answer will help many.
- Where does
user.id
go afterpassport.serializeUser
has been called?
The user id (you provide as the second argument of the done
function) is saved in the session and is later used to retrieve the whole object via the deserializeUser
function.
serializeUser
determines which data of the user object should be stored in the session. The result of the serializeUser method is attached to the session as req.session.passport.user = {}
. Here for instance, it would be (as we provide the user id as the key) req.session.passport.user = {id: 'xyz'}
- We are calling
passport.deserializeUser
right after it where does it fit in the workflow?
The first argument of deserializeUser
corresponds to the key of the user object that was given to the done
function (see 1.). So your whole object is retrieved with help of that key. That key here is the user id (key can be any key of the user object i.e. name,email etc).
In deserializeUser
that key is matched with the in memory array / database or any data resource.
The fetched object is attached to the request object as req.user
Visual Flow
passport.serializeUser(function(user, done) {
done(null, user.id);
}); ¦
¦
¦
+--------------------? saved to session
¦ req.session.passport.user = {id: '..'}
¦
?
passport.deserializeUser(function(id, done) {
+---------------+
¦
?
User.findById(id, function(err, user) {
done(err, user);
}); +--------------? user object attaches to the request as req.user
});
I've had good success with creating a dummy non-fixed nav bar right before my real fixed nav bar.
<nav class="navbar navbar-default"></nav> <!-- Dummy nav bar -->
<nav class="navbar navbar-default navbar-fixed-top"> <!-- Real nav bar -->
<!-- Nav bar details -->
</nav>
The spacing works out great on all screen sizes.
OR you can use pandas
:
>>> import pandas as pd
>>> L = [(1,2),(2,3),(4,5),(3,4),(6,7),(6,7),(3,8)]
>>> df=pd.DataFrame(L)
>>> df[1]
0 2
1 3
2 5
3 4
4 7
5 7
6 8
Name: 1, dtype: int64
>>> df[1].tolist()
[2, 3, 5, 4, 7, 7, 8]
>>>
Or numpy
:
>>> import numpy as np
>>> L = [(1,2),(2,3),(4,5),(3,4),(6,7),(6,7),(3,8)]
>>> arr=np.array(L)
>>> arr.T[1]
array([2, 3, 5, 4, 7, 7, 8])
>>> arr.T[1].tolist()
[2, 3, 5, 4, 7, 7, 8]
>>>
I haven't used connect by prior, but a quick search shows it's used for tree structures. In SQL Server, you use common table expressions to get similar functionality.
The ultimate solution would be setting overflow: hidden;
on document.documentElement
like so:
/* element is an HTML element You want catch the touch */
element.addEventListener('touchstart', function(e) {
document.documentElement.style.overflow = 'hidden';
});
document.addEventListener('touchend', function(e) {
document.documentElement.style.overflow = 'auto';
});
By setting overflow: hidden
on start of touch it makes everything exceeding window hidden thus removing availability to scroll anything (no content to scroll).
After touchend
the lock can be freed by setting overflow
to auto
(the default value).
It is better to append this to <html>
because <body>
may be used to do some styling, plus it can make children behave unexpectedly.
EDIT:
About touch-action: none;
- Safari doesn't support it according to MDN.
With the addition of Python 3, here is an updated code that works:
import numpy as n
import scipy as s
import matplotlib.pylab as p #pylab is part of matplotlib
xa=0.252
xb=1.99
C=n.linspace(xa,xb,100)
print(C)
iter=1000
Y = n.ones(len(C))
for x in range(iter):
Y = Y**2 - C #get rid of early transients
for x in range(iter):
Y = Y**2 - C
p.plot(C,Y, '.', color = 'k', markersize = 2)
p.show()
You can raise a notice in Postgres
as follows:
raise notice 'Value: %', deletedContactId;
Read here
In simple, using Comparator and Collection you can sort like below in reversal order using JAVA 8
import java.util.Comparator;;
import java.util.stream.Collectors;
Arrays.asList(files).stream()
.sorted(Comparator.comparing(File::getLastModified).reversed())
.collect(Collectors.toList());
I needed a solution to convert a String to a BigDecimal without knowing the locale and being locale-independent. I couldn't find any standard solution for this problem so i wrote my own helper method. May be it helps anybody else too:
Update: Warning! This helper method works only for decimal numbers, so numbers which always have a decimal point! Otherwise the helper method could deliver a wrong result for numbers between 1000 and 999999 (plus/minus). Thanks to bezmax for his great input!
static final String EMPTY = "";
static final String POINT = '.';
static final String COMMA = ',';
static final String POINT_AS_STRING = ".";
static final String COMMA_AS_STRING = ",";
/**
* Converts a String to a BigDecimal.
* if there is more than 1 '.', the points are interpreted as thousand-separator and will be removed for conversion
* if there is more than 1 ',', the commas are interpreted as thousand-separator and will be removed for conversion
* the last '.' or ',' will be interpreted as the separator for the decimal places
* () or - in front or in the end will be interpreted as negative number
*
* @param value
* @return The BigDecimal expression of the given string
*/
public static BigDecimal toBigDecimal(final String value) {
if (value != null){
boolean negativeNumber = false;
if (value.containts("(") && value.contains(")"))
negativeNumber = true;
if (value.endsWith("-") || value.startsWith("-"))
negativeNumber = true;
String parsedValue = value.replaceAll("[^0-9\\,\\.]", EMPTY);
if (negativeNumber)
parsedValue = "-" + parsedValue;
int lastPointPosition = parsedValue.lastIndexOf(POINT);
int lastCommaPosition = parsedValue.lastIndexOf(COMMA);
//handle '1423' case, just a simple number
if (lastPointPosition == -1 && lastCommaPosition == -1)
return new BigDecimal(parsedValue);
//handle '45.3' and '4.550.000' case, only points are in the given String
if (lastPointPosition > -1 && lastCommaPosition == -1){
int firstPointPosition = parsedValue.indexOf(POINT);
if (firstPointPosition != lastPointPosition)
return new BigDecimal(parsedValue.replace(POINT_AS_STRING, EMPTY));
else
return new BigDecimal(parsedValue);
}
//handle '45,3' and '4,550,000' case, only commas are in the given String
if (lastPointPosition == -1 && lastCommaPosition > -1){
int firstCommaPosition = parsedValue.indexOf(COMMA);
if (firstCommaPosition != lastCommaPosition)
return new BigDecimal(parsedValue.replace(COMMA_AS_STRING, EMPTY));
else
return new BigDecimal(parsedValue.replace(COMMA, POINT));
}
//handle '2.345,04' case, points are in front of commas
if (lastPointPosition < lastCommaPosition){
parsedValue = parsedValue.replace(POINT_AS_STRING, EMPTY);
return new BigDecimal(parsedValue.replace(COMMA, POINT));
}
//handle '2,345.04' case, commas are in front of points
if (lastCommaPosition < lastPointPosition){
parsedValue = parsedValue.replace(COMMA_AS_STRING, EMPTY);
return new BigDecimal(parsedValue);
}
throw new NumberFormatException("Unexpected number format. Cannot convert '" + value + "' to BigDecimal.");
}
return null;
}
Of course i've tested the method:
@Test(dataProvider = "testBigDecimals")
public void toBigDecimal_defaultLocaleTest(String stringValue, BigDecimal bigDecimalValue){
BigDecimal convertedBigDecimal = DecimalHelper.toBigDecimal(stringValue);
Assert.assertEquals(convertedBigDecimal, bigDecimalValue);
}
@DataProvider(name = "testBigDecimals")
public static Object[][] bigDecimalConvertionTestValues() {
return new Object[][] {
{"5", new BigDecimal(5)},
{"5,3", new BigDecimal("5.3")},
{"5.3", new BigDecimal("5.3")},
{"5.000,3", new BigDecimal("5000.3")},
{"5.000.000,3", new BigDecimal("5000000.3")},
{"5.000.000", new BigDecimal("5000000")},
{"5,000.3", new BigDecimal("5000.3")},
{"5,000,000.3", new BigDecimal("5000000.3")},
{"5,000,000", new BigDecimal("5000000")},
{"+5", new BigDecimal("5")},
{"+5,3", new BigDecimal("5.3")},
{"+5.3", new BigDecimal("5.3")},
{"+5.000,3", new BigDecimal("5000.3")},
{"+5.000.000,3", new BigDecimal("5000000.3")},
{"+5.000.000", new BigDecimal("5000000")},
{"+5,000.3", new BigDecimal("5000.3")},
{"+5,000,000.3", new BigDecimal("5000000.3")},
{"+5,000,000", new BigDecimal("5000000")},
{"-5", new BigDecimal("-5")},
{"-5,3", new BigDecimal("-5.3")},
{"-5.3", new BigDecimal("-5.3")},
{"-5.000,3", new BigDecimal("-5000.3")},
{"-5.000.000,3", new BigDecimal("-5000000.3")},
{"-5.000.000", new BigDecimal("-5000000")},
{"-5,000.3", new BigDecimal("-5000.3")},
{"-5,000,000.3", new BigDecimal("-5000000.3")},
{"-5,000,000", new BigDecimal("-5000000")},
{null, null}
};
}
I know I am a little late to the party, but I've used this trick a couple of times (and I know it's a bit unusual):
I create an generic interface InfoRunnable<T>
with one method:
public T run(Object... args);
And if I need to do something before passing it to the constructor I just do this:
super(new InfoRunnable<ThingToPass>() {
public ThingToPass run(Object... args) {
/* do your things here */
}
}.run(/* args here */));
Try this:
private int hour;
public int Hour
{
get { return hour; }
set
{
//make sure hour is positive
if (value < MIN_HOUR)
{
hour = 0;
MessageBox.Show("Hour value " + value.ToString() + " cannot be negative. Reset to " + MIN_HOUR.ToString(),
"Invalid Hour", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
else
{
//take the modulus to ensure always less than 24 hours
//works even if the value is already within range, or value equal to 24
hour = value % MAX_HOUR;
}
}
}
I feel a little uneasy to add more answers here. Decided to go for the most readable and minimal pure ruby approach, disregarding the nice benchmark from @ulysse-bn. While :class
mode is a copy of @user3869936, the :method
mode I don't see in any other answer here.
def snake_to_camel_case(str, mode: :class)
case mode
when :class
str.split('_').map(&:capitalize).join
when :method
str.split('_').inject { |m, p| m + p.capitalize }
else
raise "unknown mode #{mode.inspect}"
end
end
Result is:
[28] pry(main)> snake_to_camel_case("asd_dsa_fds", mode: :class)
=> "AsdDsaFds"
[29] pry(main)> snake_to_camel_case("asd_dsa_fds", mode: :method)
=> "asdDsaFds"
The correct config key is retention.ms
$ bin/kafka-topics.sh --zookeeper zk.prod.yoursite.com --alter --topic as-access --config retention.ms=86400000
Updated config for topic "my-topic".
As alluded to in wickeD's answer, with replaceAll the replacement string is handled differently between replace and replaceAll. I expected a[3] and a[4] to have the same value, but they are different.
public static void main(String[] args) {
String[] a = new String[5];
a[0] = "\\";
a[1] = "X";
a[2] = a[0] + a[1];
a[3] = a[1].replaceAll("X", a[0] + "X");
a[4] = a[1].replace("X", a[0] + "X");
for (String s : a) {
System.out.println(s + "\t" + s.length());
}
}
The output of this is:
\ 1
X 1
\X 2
X 1
\X 2
This is different from perl where the replacement does not require the extra level of escaping:
#!/bin/perl
$esc = "\\";
$s = "X";
$s =~ s/X/${esc}X/;
print "$s " . length($s) . "\n";
which prints \X 2
This can be quite a nuisance, as when trying to use the value returned by java.sql.DatabaseMetaData.getSearchStringEscape() with replaceAll().
All the content and examples here are from
Operating Systems: Internals and Design Principles
William Stallings
8º Edition
Deadlock: A situation in which two or more processes are unable to proceed because each is waiting for one the others to do something.
For example, consider two processes, P1 and P2, and two resources, R1 and R2. Suppose that each process needs access to both resources to perform part of its function. Then it is possible to have the following situation: the OS assigns R1 to P2, and R2 to P1. Each process is waiting for one of the two resources. Neither will release the resource that it already owns until it has acquired the other resource and performed the function requiring both resources. The two processes are deadlocked
Livelock: A situation in which two or more processes continuously change their states in response to changes in the other process(es) without doing any useful work:
Starvation: A situation in which a runnable process is overlooked indefinitely by the scheduler; although it is able to proceed, it is never chosen.
Suppose that three processes (P1, P2, P3) each require periodic access to resource R. Consider the situation in which P1 is in possession of the resource, and both P2 and P3 are delayed, waiting for that resource. When P1 exits its critical section, either P2 or P3 should be allowed access to R. Assume that the OS grants access to P3 and that P1 again requires access before P3 completes its critical section. If the OS grants access to P1 after P3 has finished, and subsequently alternately grants access to P1 and P3, then P2 may indefinitely be denied access to the resource, even though there is no deadlock situation.
APPENDIX A - TOPICS IN CONCURRENCY
Deadlock Example
If both processes set their flags to true before either has executed the while statement, then each will think that the other has entered its critical section, causing deadlock.
/* PROCESS 0 */
flag[0] = true; // <- get lock 0
while (flag[1]) // <- is lock 1 free?
/* do nothing */; // <- no? so I wait 1 second, for example
// and test again.
// on more sophisticated setups we can ask
// to be woken when lock 1 is freed
/* critical section*/; // <- do what we need (this will never happen)
flag[0] = false; // <- releasing our lock
/* PROCESS 1 */
flag[1] = true;
while (flag[0])
/* do nothing */;
/* critical section*/;
flag[1] = false;
Livelock Example
/* PROCESS 0 */
flag[0] = true; // <- get lock 0
while (flag[1]){
flag[0] = false; // <- instead of sleeping, we do useless work
// needed by the lock mechanism
/*delay */; // <- wait for a second
flag[0] = true; // <- and restart useless work again.
}
/*critical section*/; // <- do what we need (this will never happen)
flag[0] = false;
/* PROCESS 1 */
flag[1] = true;
while (flag[0]) {
flag[1] = false;
/*delay */;
flag[1] = true;
}
/* critical section*/;
flag[1] = false;
[...] consider the following sequence of events:
This sequence could be extended indefinitely, and neither process could enter its critical section. Strictly speaking, this is not deadlock, because any alteration in the relative speed of the two processes will break this cycle and allow one to enter the critical section. This condition is referred to as livelock. Recall that deadlock occurs when a set of processes wishes to enter their critical sections but no process can succeed. With livelock, there are possible sequences of executions that succeed, but it is also possible to describe one or more execution sequences in which no process ever enters its critical section.
Not content from the book anymore.
And what about spinlocks?
Spinlock is a technique to avoid the cost of the OS lock mechanism. Typically you would do:
try
{
lock = beginLock();
doSomething();
}
finally
{
endLock();
}
A problem start to appear when beginLock()
costs much more than doSomething()
. In very exagerated terms, imagine what happens when the beginLock
costs 1 second, but doSomething
cost just 1 millisecond.
In this case if you waited 1 millisecond, you would avoid being hindered for 1 second.
Why the beginLock
would cost so much? If the lock is free is does not cost a lot (see https://stackoverflow.com/a/49712993/5397116), but if the lock is not free the OS will "freeze" your thread, setup a mechanism to wake you when the lock is freed, and then wake you again in the future.
All of this is much more expensive than some loops checking the lock. That is why sometimes is better to do a "spinlock".
For example:
void beginSpinLock(lock)
{
if(lock) loopFor(1 milliseconds);
else
{
lock = true;
return;
}
if(lock) loopFor(2 milliseconds);
else
{
lock = true;
return;
}
// important is that the part above never
// cause the thread to sleep.
// It is "burning" the time slice of this thread.
// Hopefully for good.
// some implementations fallback to OS lock mechanism
// after a few tries
if(lock) return beginLock(lock);
else
{
lock = true;
return;
}
}
If your implementation is not careful, you can fall on livelock, spending all CPU on the lock mechanism.
Also see:
https://preshing.com/20120226/roll-your-own-lightweight-mutex/
Is my spin lock implementation correct and optimal?
Summary:
Deadlock: situation where nobody progress, doing nothing (sleeping, waiting etc..). CPU usage will be low;
Livelock: situation where nobody progress, but CPU is spent on the lock mechanism and not on your calculation;
Starvation: situation where one procress never gets the chance to run; by pure bad luck or by some of its property (low priority, for example);
Spinlock: technique of avoiding the cost waiting the lock to be freed.
The answers in this topic are all great. However i'd like to propose another one. Most likely you have been given an api and want that into your c# project. Using Postman, you can setup and test the api call there and once it runs properly, you can simply click 'Code' and the request that you have been working on, is written to a c# snippet. like this:
var client = new RestClient("https://api.XXXXX.nl/oauth/token");
client.Timeout = -1;
var request = new RestRequest(Method.POST);
request.AddHeader("Authorization", "Basic N2I1YTM4************************************jI0YzJhNDg=");
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
request.AddParameter("grant_type", "password");
request.AddParameter("username", "[email protected]");
request.AddParameter("password", "XXXXXXXXXXXXX");
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);
The code above depends on the nuget package RestSharp, which you can easily install.
As an alternative, you can install 7.1 version of mcrypt
and create a symbolic link to it:
Install php7.1-mcrypt:
sudo apt install php7.1-mcrypt
Create a symbolic link:
sudo ln -s /etc/php/7.1/mods-available/mcrypt.ini /etc/php/7.2/mods-available
After enabling mcrypt
by sudo phpenmod mcrypt
, it gets available.
You can transfer array from javascript to PHP...
Javascript... ArraySender.html
<script language="javascript">
//its your javascript, your array can be multidimensional or associative
plArray = new Array();
plArray[1] = new Array(); plArray[1][0]='Test 1 Data'; plArray[1][1]= 'Test 1'; plArray[1][2]= new Array();
plArray[1][2][0]='Test 1 Data Dets'; plArray[1][2][1]='Test 1 Data Info';
plArray[2] = new Array(); plArray[2][0]='Test 2 Data'; plArray[2][1]= 'Test 2';
plArray[3] = new Array(); plArray[3][0]='Test 3 Data'; plArray[3][1]= 'Test 3';
plArray[4] = new Array(); plArray[4][0]='Test 4 Data'; plArray[4][1]= 'Test 4';
plArray[5] = new Array(); plArray[5]["Data"]='Test 5 Data'; plArray[5]["1sss"]= 'Test 5';
function convertJsArr2Php(JsArr){
var Php = '';
if (Array.isArray(JsArr)){
Php += 'array(';
for (var i in JsArr){
Php += '\'' + i + '\' => ' + convertJsArr2Php(JsArr[i]);
if (JsArr[i] != JsArr[Object.keys(JsArr)[Object.keys(JsArr).length-1]]){
Php += ', ';
}
}
Php += ')';
return Php;
}
else{
return '\'' + JsArr + '\'';
}
}
function ajaxPost(str, plArrayC){
var xmlhttp;
if (window.XMLHttpRequest){xmlhttp = new XMLHttpRequest();}
else{xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");}
xmlhttp.open("POST",str,true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.send('Array=' + plArrayC);
}
ajaxPost('ArrayReader.php',convertJsArr2Php(plArray));
</script>
and PHP Code... ArrayReader.php
<?php
eval('$plArray = ' . $_POST['Array'] . ';');
print_r($plArray);
?>
Reading the file
import scipy.io
mat = scipy.io.loadmat(file_name)
Inspecting the type of MAT variable
print(type(mat))
#OUTPUT - <class 'dict'>
The keys inside the dictionary are MATLAB variables, and the values are the objects assigned to those variables.
It's already been answered how to get offset in minutes as an integer, but in case anyone wants the local GMT offset as a string e.g. "+1130"
:
function pad(number, length){
var str = "" + number
while (str.length < length) {
str = '0'+str
}
return str
}
var offset = new Date().getTimezoneOffset()
offset = ((offset<0? '+':'-')+ // Note the reversed sign!
pad(parseInt(Math.abs(offset/60)), 2)+
pad(Math.abs(offset%60), 2))
To have access to stuff provided by math
module, like pi
. You need to import the module first:
import math
print (math.pi)
You can do it like this since Laravel 5.5:
Post::with('user:id,username')->get();
Care for the id
field and foreign keys
as stated in the docs:
When using this feature, you should always include the id column and any relevant foreign key columns in the list of columns you wish to retrieve.
For example, if the user belongs to a team and has a team_id
as a foreign key column, then $post->user->team
is empty if you don't specifiy team_id
Post::with('user:id,username,team_id')->get();
Inside your git repository directory, run git config user.name
.
Why is running this command within your git repo directory important?
If you are outside of a git repository, git config user.name
gives you the value of user.name
at global level. When you make a commit, the associated user name is read at local level.
Although unlikely, let's say user.name
is defined as foo
at global level, but bar
at local level. Then, when you run git config user.name
outside of the git repo directory, it gives bar
. However, when you really commits something, the associated value is foo
.
Git config variables can be stored in 3 different levels. Each level overrides values in the previous level.
1. System level (applied to every user on the system and all their repositories)
git config --list --system
(may need sudo
)git config --system color.ui true
git config --edit --system
2. Global level (values specific personally to you, the user. )
git config --list --global
git config --global user.name xyz
git config --edit --global
3. Repository level (specific to that single repository)
git config --list --local
git config --local core.ignorecase true
(--local
optional)git config --edit --local
(--local
optional)How to view all settings?
git config --list
, showing system, global, and (if inside a repository) local configsgit config --list --show-origin
, also shows the origin file of each config itemHow to read one particular config?
git config user.name
to get user.name
, for example.--system
, --global
, --local
to read that value at a particular level.Reference: 1.6 Getting Started - First-Time Git Setup
No doubt that you are correct Florin. I was working on this project, and found that this piece of code:
product = await response.Content.ReadAsAsync<Product>();
Could be replaced with:
response.Content = new StringContent(string product);
FWIW - I had a similar problem and I'm not sure if this alleviated it (beyond the permission mod): Closing Eclipse that was using the branch with this problem.
Utilize regular buttons and set the display property to inline in order to center the buttons on a single line. Setting the display property to inline-block will also put them on the same line, but they will not be centered via that display property setting.
pip install mechanize
mechanize supports only python 2.
For python3 refer https://stackoverflow.com/a/31774959/4773973 for alternatives.
I would recommend writing these helpers using named parameters for the sake of clarity as follows:
@Html.ActionLink(
linkText: "Details",
actionName: "Details",
controllerName: "Product",
routeValues: new {
id = item.ID
},
htmlAttributes: null
)
The correct syntax is:
data: {status: status, name: name},
As specified here: http://api.jquery.com/jQuery.ajax/
So if that doesn't work, I would alert those variables to make sure they have values.
This kind of error can also happen when using COPY and having an escaped string containing NULL values(00
) such as:
"H\x00\x00\x00tj\xA8\x9E#D\x98+\xCA\xF0\xA7\xBBl\xC5\x19\xD7\x8D\xB6\x18\xEDJ\x1En"
If you use COPY
without specifying the format 'CSV'
postgres by default will assume format 'text'
. This has a different interaction with backlashes, see text format.
If you're using COPY
or a file_fdw
make sure to specify format 'CSV'
to avoid this kind of errors.
On Linux (with mono, available via apt-get
on Debian) and Windows:
If you are on Windows I recommend you have a look at:
Both tools are free and both are able to provide similar visualizations as shown in your example.
You can do like
HTML in PHP :
<?php
echo "<table>";
echo "<tr>";
echo "<td>Name</td>";
echo "<td>".$name."</td>";
echo "</tr>";
echo "</table>";
?>
Or You can write like.
PHP in HTML :
<?php /*Do some PHP calculation or something*/ ?>
<table>
<tr>
<td>Name</td>
<td><?php echo $name;?></td>
</tr>
</table>
<?php /*Do some PHP calculation or something*/ ?>
Means:
You can open a PHP tag with <?php
, now add your PHP code, then close the tag with ?>
and then write your html code. When needed to add more PHP, just open another PHP tag with <?php
.
This worked for me.
DECLARE @sql NVARCHAR(MAX) = N'';
SELECT @sql += '
DROP TABLE '
+ QUOTENAME(s.name)
+ '.' + QUOTENAME(t.name) + ';'
FROM sys.tables AS t
INNER JOIN sys.schemas AS s
ON t.[schema_id] = s.[schema_id]
WHERE t.name LIKE 'something%';
PRINT @sql;
-- EXEC sp_executesql @sql;
You need to put "here" into a <div>
or <span>
with style="float: right"
.
Basing on existing answers and some suggestions, I've created this one:
String.prototype.removeAccents = function() {
var removalMap = {
'A' : /[A?AÀÁÂ????ÃAA??????ÄA?Å?A??????A]/g,
'AA' : /[?]/g,
'AE' : /[Æ??]/g,
'AO' : /[?]/g,
'AU' : /[?]/g,
'AV' : /[??]/g,
'AY' : /[?]/g,
'B' : /[B?B??????]/g,
'C' : /[C?CCCCCÇ????]/g,
'D' : /[D?D?D????Ð??Ð?]/g,
'DZ' : /[??]/g,
'Dz' : /[??]/g,
'E' : /[E?EÈÉÊ?????E??EEË?E??????E????]/g,
'F' : /[F?F?ƒ?]/g,
'G' : /[G?G?G?GGGGG????]/g,
'H' : /[H?HH??????H???]/g,
'I' : /[I?IÌÍÎIIIIÏ??I???I?I]/g,
'J' : /[J?JJ?]/g,
'K' : /[K?K?K?K???????]/g,
'L' : /[L?L?LL??L??L??????]/g,
'LJ' : /[?]/g,
'Lj' : /[?]/g,
'M' : /[M?M?????]/g,
'N' : /[N?N?NÑ?N?N??????]/g,
'NJ' : /[?]/g,
'Nj' : /[?]/g,
'O' : /[O?OÒÓÔ????Õ???O??O??Ö??OO??O???????OOØ??O??]/g,
'OI' : /[?]/g,
'OO' : /[?]/g,
'OU' : /[?]/g,
'P' : /[P?P???????]/g,
'Q' : /[Q?Q???]/g,
'R' : /[R?RR?R????R??????]/g,
'S' : /[S?S?S?S?Š????S???]/g,
'T' : /[T?T?T??T??T?T??]/g,
'TZ' : /[?]/g,
'U' : /[U?UÙÚÛU?U?UÜUUUU?UUU??U???????U???]/g,
'V' : /[V?V?????]/g,
'VY' : /[?]/g,
'W' : /[W?W??W????]/g,
'X' : /[X?X??]/g,
'Y' : /[Y?Y?ÝY???Ÿ?????]/g,
'Z' : /[Z?ZZ?ZŽ???????]/g,
'a' : /[a?a?àáâ????ãaa??????äa?å?a??????a??]/g,
'aa' : /[?]/g,
'ae' : /[æ??]/g,
'ao' : /[?]/g,
'au' : /[?]/g,
'av' : /[??]/g,
'ay' : /[?]/g,
'b' : /[b?b???b??]/g,
'c' : /[c?cccccç?????]/g,
'd' : /[d?d?d????d????]/g,
'dz' : /[??]/g,
'e' : /[e?eèéê?????e??eeë?e??????e?????]/g,
'f' : /[f?f?ƒ?]/g,
'g' : /[g?g?g?ggggg????]/g,
'h' : /[h?hh???????h???]/g,
'hv' : /[?]/g,
'i' : /[i?iìíîiiiï??i???i??i]/g,
'j' : /[j?jjj?]/g,
'k' : /[k?k?k?k???????]/g,
'l' : /[l?l?ll??l???ll?????]/g,
'lj' : /[?]/g,
'm' : /[m?m?????]/g,
'n' : /[n?n?nñ?n?n???????]/g,
'nj' : /[?]/g,
'o' : /[o?oòóô????õ???o??o??ö??oo??o???????ooø?????]/g,
'oi' : /[?]/g,
'ou' : /[?]/g,
'oo' : /[?]/g,
'p' : /[p?p???????]/g,
'q' : /[q?q???]/g,
'r' : /[r?rr?r????r??????]/g,
's' : /[s?sßs?s?š????s????]/g,
't' : /[t?t??t??t??t????]/g,
'tz' : /[?]/g,
'u' : /[u?uùúûu?u?uüuuuu?uuu??u???????u???]/g,
'v' : /[v?v?????]/g,
'vy' : /[?]/g,
'w' : /[w?w??w?????]/g,
'x' : /[x?x??]/g,
'y' : /[y?y?ýy???ÿ??????]/g,
'z' : /[z?zz?zž??z????]/g,
};
var str = this;
for(var latin in removalMap) {
var nonLatin = removalMap[latin];
str = str.replace(nonLatin , latin);
}
return str;
}
It uses real chars instead of unicode list and works well.
You can use it like
"aaa".removeAccents(); // returns "aaa"
You can easily convert this function to not be string prototype. However, as I'm fan of using string prototype in such cases, you'll have to do it yourself.
The one I like is: cd C:
To have linux like feel then do:
ln -s /cygdrive/c/folder ~/folder
and use this like: ~/folder/..
I am new to selenium and I tried all solutions above but they don't work. Finally, I tried this manually by
driver = webdriver.Firefox()
import time
driver.get(url)
time.sleep(20)
print (driver.page_source.encode("utf-8"))
Then I could get contents from web.
Maybe another program is interfering? Closing Teamviewer fixed the problem for me.
You're asking the wrong question. The codebehind (controller) has nothing to do with what the frontend does. In fact, that's the strength of MVC -- you separate the code/concept from the view.
If you want an action to open in a new window, then links to that action need to tell the browser to open a new window when clicked.
A pseudo example: <a href="NewWindow" target="_new">Click Me</a>
And that's all there is to it. Set the target of links to that action.
Check out CORS enabled image from MDN. Basically you must have a server hosting images with the appropriate Access-Control-Allow-Origin header.
<IfModule mod_setenvif.c>
<IfModule mod_headers.c>
<FilesMatch "\.(cur|gif|ico|jpe?g|png|svgz?|webp)$">
SetEnvIf Origin ":" IS_CORS
Header set Access-Control-Allow-Origin "*" env=IS_CORS
</FilesMatch>
</IfModule>
</IfModule>
_x000D_
You will be able to save those images to DOM Storage as if they were served from your domain otherwise you will run into security issue.
var img = new Image,
canvas = document.createElement("canvas"),
ctx = canvas.getContext("2d"),
src = "http://example.com/image"; // insert image url here
img.crossOrigin = "Anonymous";
img.onload = function() {
canvas.width = img.width;
canvas.height = img.height;
ctx.drawImage( img, 0, 0 );
localStorage.setItem( "savedImageData", canvas.toDataURL("image/png") );
}
img.src = src;
// make sure the load event fires for cached images too
if ( img.complete || img.complete === undefined ) {
img.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";
img.src = src;
}
_x000D_
Use the where
command. The first result in the list is the one that will execute.
C:\> where notepad C:\Windows\System32\notepad.exe C:\Windows\notepad.exe
According to this blog post, where.exe
is included with Windows Server 2003 and later, so this should just work with Vista, Win 7, et al.
On Linux, the equivalent is the which
command, e.g. which ssh
.
For those who use ruby, I made a small utility gem called dotenv_export
.
dotenv_export
is a small utility command which reads .env
file and converts it into export
statements using the ruby dotenv
implementation.
# first install `dotenv_export`
gem install dotenv_export
Then, in your .bash_profile
, or any shell environment in which you want to load the environment variables, execute following command:
eval "$(dotenv-export /path/to/.env)"
The commands dict.items()
, dict.keys()
and dict.values()
return a copy of the dictionary's list of (k, v)
pair, keys and values.
This could take a lot of memory if the copied list is very large.
The commands dict.iteritems()
, dict.iterkeys()
and dict.itervalues()
return an iterator over the dictionary’s (k, v)
pair, keys and values.
The commands dict.viewitems()
, dict.viewkeys()
and dict.viewvalues()
return the view objects, which can reflect the dictionary's changes.
(I.e. if you del
an item or add a (k,v)
pair in the dictionary, the view object can automatically change at the same time.)
$ python2.7
>>> d = {'one':1, 'two':2}
>>> type(d.items())
<type 'list'>
>>> type(d.keys())
<type 'list'>
>>>
>>>
>>> type(d.iteritems())
<type 'dictionary-itemiterator'>
>>> type(d.iterkeys())
<type 'dictionary-keyiterator'>
>>>
>>>
>>> type(d.viewitems())
<type 'dict_items'>
>>> type(d.viewkeys())
<type 'dict_keys'>
In Py3.x, things are more clean, since there are only dict.items()
, dict.keys()
and dict.values()
available, which return the view objects just as dict.viewitems()
in Py2.x did.
Just as @lvc noted, view object isn't the same as iterator, so if you want to return an iterator in Py3.x, you could use iter(dictview)
:
$ python3.3
>>> d = {'one':'1', 'two':'2'}
>>> type(d.items())
<class 'dict_items'>
>>>
>>> type(d.keys())
<class 'dict_keys'>
>>>
>>>
>>> ii = iter(d.items())
>>> type(ii)
<class 'dict_itemiterator'>
>>>
>>> ik = iter(d.keys())
>>> type(ik)
<class 'dict_keyiterator'>
You need to use data: {title: title}
to POST it correctly.
In the PHP code you need to echo
the value instead of return
ing it.
The terms "background page", "popup", "content script" are still confusing you; I strongly suggest a more in-depth look at the Google Chrome Extensions Documentation.
Regarding your question if content scripts or background pages are the way to go:
Content scripts: Definitely
Content scripts are the only component of an extension that has access to the web-page's DOM.
Background page / Popup: Maybe (probably max. 1 of the two)
You may need to have the content script pass the DOM content to either a background page or the popup for further processing.
Let me repeat that I strongly recommend a more careful study of the available documentation!
That said, here is a sample extension that retrieves the DOM content on StackOverflow pages and sends it to the background page, which in turn prints it in the console:
background.js:
// Regex-pattern to check URLs against.
// It matches URLs like: http[s]://[...]stackoverflow.com[...]
var urlRegex = /^https?:\/\/(?:[^./?#]+\.)?stackoverflow\.com/;
// A function to use as callback
function doStuffWithDom(domContent) {
console.log('I received the following DOM content:\n' + domContent);
}
// When the browser-action button is clicked...
chrome.browserAction.onClicked.addListener(function (tab) {
// ...check the URL of the active tab against our pattern and...
if (urlRegex.test(tab.url)) {
// ...if it matches, send a message specifying a callback too
chrome.tabs.sendMessage(tab.id, {text: 'report_back'}, doStuffWithDom);
}
});
content.js:
// Listen for messages
chrome.runtime.onMessage.addListener(function (msg, sender, sendResponse) {
// If the received message has the expected format...
if (msg.text === 'report_back') {
// Call the specified callback, passing
// the web-page's DOM content as argument
sendResponse(document.all[0].outerHTML);
}
});
manifest.json:
{
"manifest_version": 2,
"name": "Test Extension",
"version": "0.0",
...
"background": {
"persistent": false,
"scripts": ["background.js"]
},
"content_scripts": [{
"matches": ["*://*.stackoverflow.com/*"],
"js": ["content.js"]
}],
"browser_action": {
"default_title": "Test Extension"
},
"permissions": ["activeTab"]
}
If spring-security
jars are added in classpath and also if it is spring-boot
application all http endpoints will be secured by default security configuration class SecurityAutoConfiguration
This causes a browser pop-up to ask for credentials.
The password changes for each application restarts and can be found in console.
Using default security password: 78fa095d-3f4c-48b1-ad50-e24c31d5cf35
To add your own layer of application security in front of the defaults,
@EnableWebSecurity
public class SecurityConfig {
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
auth
.inMemoryAuthentication()
.withUser("user").password("password").roles("USER");
}
}
or if you just want to change password you could override default with,
application.xml
security.user.password=new_password
or
application.properties
spring.security.user.name=<>
spring.security.user.password=<>
Put this line in your Activity
in the Manifest
:
<activity android:name=".MainActivity"
android:theme="@style/Theme.AppCompat.Light.NoActionBar">
...
</activity>
and make sure you didn't put Toolbar
in your layout
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
/>
Alternatively, you can use the File.GetCreationTime Method if you need to delete files based on creation dates.
Its the Windows OS that make the problem. I got the same problem. Then I tried some other app which use JavaVM to connect the internet, and they fails. Try update JRE, you will notice it. If JRE cannot update itself, then there is some socket inaccessibility that prevent internet access apart from using native windows API. I reinstall Win7 and it fixed the problem.
To repair a corrupt database you can use the sqlite3 commandline utility. Type in the following commands in a shell after setting the environment variables:
cd $DATABASE_LOCATION
echo '.dump'|sqlite3 $DB_NAME|sqlite3 repaired_$DB_NAME
mv $DB_NAME corrupt_$DB_NAME
mv repaired_$DB_NAME $DB_NAME
This code helped me recover a SQLite database I use as a persistent store for Core Data and which produced the following error upon save:
Could not save: NSError 259 in Domain NSCocoaErrorDomain { NSFilePath = mydata.db NSUnderlyingException = Fatal error. The database at mydata.db is corrupted. SQLite error code:11, 'database disk image is malformed' }
Do you want to do something like this ?
JTextField mTextField = new JTextField();
mTextField.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_ENTER){
// something like...
//mTextField.getText();
// or...
//mButton.doClick();
}
}
});
If you have it, try removing this from your vimrc: set mouse=a
It messes with the paste functionality.
This should work:
for /F "tokens=*" %i in ('temperature') do prismcom.exe usb %i
If running in a batch file, you need to use %%i
instead of just %i
(in both places).
I solved it moving the file spring-context.xml in a src folder. ApplicationContext context = new ClassPathXmlApplicationContext("spring-context.xml");
Recursive, standalone function which can return any number of items (identical to lodash.sampleSize):
function getRandomElementsFromArray(array, numberOfRandomElementsToExtract = 1) {
const elements = [];
function getRandomElement(arr) {
if (elements.length < numberOfRandomElementsToExtract) {
const index = Math.floor(Math.random() * arr.length)
const element = arr.splice(index, 1)[0];
elements.push(element)
return getRandomElement(arr)
} else {
return elements
}
}
return getRandomElement([...array])
}
float currentSize = textEdit.getTextSize(); // default size
float newSize = currentSize * 2.0F; // new size is twice bigger than default one
textEdit.setTextSize(newSize);
Use each: 'i
' is the postion in the array, obj
is the DOM object that you are iterating (can be accessed through the jQuery wrapper $(this)
as well).
$('.testimonial').each(function(i, obj) {
//test
});
Check the api reference for more information.
If you are looking to style a file input element, look at open file dialog box in javascript. If you are looking to grab the files associated with a file input element, you must do something like this:
inputElement.onchange = function(event) {
var fileList = inputElement.files;
//TODO do something with fileList.
}
See this MDN article for more info on the FileList
type.
Note that the code above will only work in browsers that support the File API. For IE9 and earlier, for example, you only have access to the file name. The input element has no files
property in non-File API browsers.
Your regex seems a bit too complex in my opinion. Also, remember that the dot is a special character meaning "any character". The following regex should work (note the escaped dots):
^.*\.(jpg|JPG|gif|GIF|doc|DOC|pdf|PDF)$
You can use a tool like Expresso to test your regular expressions.
In order to set CATALINA_HOME:
NOTE: Do not place your apache tomcat folder within any other folder or drive, place it directly in C:// drive folder only. (I did this mistake and none of the above-mentioned solutions were working).
Open environment variable dialog box (windows key+ pause-break key --> advanced setting).
Add a new variable name as "CATALINA_HOME" and add the variable path as "C://apache-tomcat-7.1.100"(as in my case), in System Variables.
Edit PATH variable name add "%CATALINA_HOME%\bin" and press OK.
Close the window and it will be saved.
Open Command Prompt window and type command- "%CATALINA_HOME%\bin\startup.bat" to run and start the Tomcat server.
END!
Optimized (but less readable) implementation:
function base64toBlob(base64Data, contentType) {
contentType = contentType || '';
var sliceSize = 1024;
var byteCharacters = atob(base64Data);
var bytesLength = byteCharacters.length;
var slicesCount = Math.ceil(bytesLength / sliceSize);
var byteArrays = new Array(slicesCount);
for (var sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) {
var begin = sliceIndex * sliceSize;
var end = Math.min(begin + sliceSize, bytesLength);
var bytes = new Array(end - begin);
for (var offset = begin, i = 0; offset < end; ++i, ++offset) {
bytes[i] = byteCharacters[offset].charCodeAt(0);
}
byteArrays[sliceIndex] = new Uint8Array(bytes);
}
return new Blob(byteArrays, { type: contentType });
}
If it's a table-value function (returns a table set) you simply join it as a Table
this function generates one column table with all the values from passed comma-separated list
SELECT * FROM dbo.udf_generate_inlist_to_table('1,2,3,4')
NOTE calling parent method via super will only work on parent class,
If your parent is interface, and wants to call the default methods then need to add interfaceName before super like IfscName.super.method();
interface Vehicle {
//Non abstract method
public default void printVehicleTypeName() { //default keyword can be used only in interface.
System.out.println("Vehicle");
}
}
class FordFigo extends FordImpl implements Vehicle, Ford {
@Override
public void printVehicleTypeName() {
System.out.println("Figo");
Vehicle.super.printVehicleTypeName();
}
}
Interface name is needed because same default methods can be available in multiple interface name that this class extends. So explicit call to a method is required.
You could not only check if any 'NaN' exist but also get the percentage of 'NaN's in each column using the following,
df = pd.DataFrame({'col1':[1,2,3,4,5],'col2':[6,np.nan,8,9,10]})
df
col1 col2
0 1 6.0
1 2 NaN
2 3 8.0
3 4 9.0
4 5 10.0
df.isnull().sum()/len(df)
col1 0.0
col2 0.2
dtype: float64
If you have a list of lists, you only needed to use ...
import numpy as np
...
npa = np.asarray(someListOfLists, dtype=np.float32)
per this LINK in the scipy / numpy documentation. You just needed to define dtype inside the call to asarray.
Try this rule before your other rules:
RewriteRule ^(admin|user)($|/) - [L]
This will end the rewriting process.
In pre-7 how about:
Boolean caught = true;
Exception e;
try {
...
caught = false;
} catch (TransformerException te) {
e = te;
} catch (SocketException se) {
e = se;
} catch (IOException ie) {
e = ie;
}
if (caught) {
someCode(); // You can reference Exception e here.
}
Use numpy.dot
or a.dot(b)
. See the documentation here.
>>> a = np.array([[ 5, 1 ,3],
[ 1, 1 ,1],
[ 1, 2 ,1]])
>>> b = np.array([1, 2, 3])
>>> print a.dot(b)
array([16, 6, 8])
This occurs because numpy arrays are not matrices, and the standard operations *, +, -, /
work element-wise on arrays. Instead, you could try using numpy.matrix
, and *
will be treated like matrix multiplication.
Also know there are other options:
As noted below, if using python3.5+ the @
operator works as you'd expect:
>>> print(a @ b)
array([16, 6, 8])
If you want overkill, you can use numpy.einsum
. The documentation will give you a flavor for how it works, but honestly, I didn't fully understand how to use it until reading this answer and just playing around with it on my own.
>>> np.einsum('ji,i->j', a, b)
array([16, 6, 8])
As of mid 2016 (numpy 1.10.1), you can try the experimental numpy.matmul
, which works like numpy.dot
with two major exceptions: no scalar multiplication but it works with stacks of matrices.
>>> np.matmul(a, b)
array([16, 6, 8])
numpy.inner
functions the same way as numpy.dot
for matrix-vector multiplication but behaves differently for matrix-matrix and tensor multiplication (see Wikipedia regarding the differences between the inner product and dot product in general or see this SO answer regarding numpy's implementations).
>>> np.inner(a, b)
array([16, 6, 8])
# Beware using for matrix-matrix multiplication though!
>>> b = a.T
>>> np.dot(a, b)
array([[35, 9, 10],
[ 9, 3, 4],
[10, 4, 6]])
>>> np.inner(a, b)
array([[29, 12, 19],
[ 7, 4, 5],
[ 8, 5, 6]])
If you have tensors (arrays of dimension greater than or equal to one), you can use numpy.tensordot
with the optional argument axes=1
:
>>> np.tensordot(a, b, axes=1)
array([16, 6, 8])
Don't use numpy.vdot
if you have a matrix of complex numbers, as the matrix will be flattened to a 1D array, then it will try to find the complex conjugate dot product between your flattened matrix and vector (which will fail due to a size mismatch n*m
vs n
).
The quick answer.
Separate rules with commas:
@media handheld, (min-width: 650px), (orientation: landscape) { ... }
The long answer.
There's a lot here, but I've tried to make it information dense, not just fluffy writing. It's been a good chance to learn myself! Take the time to systematically read though and I hope it will be helpful.
Media queries essentially are used in web design to create device- or situation-specific browsing experiences; this is done using the @media
declaration within a page's CSS. This can be used to display a webpage differently under a large number of circumstances: whether you are on a tablet or TV with different aspect ratios, whether your device has a color or black-and-white screen, or, perhaps most frequently, when a user changes the size of their browser or switches between browsing devices with varying screen sizes (very generally speaking, designing like this is referred to as Responsive Web Design)
In designing for these situations, there appear to be four Logical Operators that can be used to require more complex combinations of requirements when targeting a variety of devices or viewport sizes.
(Note: If you don't understand the the differences between media rules, media queries, and feature queries, browse the bottom section of this answer first to get a bit better acquainted with the terminology associated with media query syntax
1. AND (and keyword)
Requires that all conditions specified must be met before the styling rules will take effect.
@media screen and (min-width: 700px) and (orientation: landscape) { ... }
The specified styling rules won't go into place unless all of the following evaluate as true:
Note: I believe that used together, these three feature queries make up a single media query.
2. OR (Comma-separated lists)
Rather than an or keyword, comma-separated lists are used in chaining multiple media queries together to form a more complex media rule
@media handheld, (min-width: 650px), (orientation: landscape) { ... }
The specified styling rules will go into effect once any one media query evaluates as true:
3. NOT (not keyword)
The not keyword can be used to negate a single media query (and NOT a full media rule--meaning that it only negates entries between a set of commas and not the full media rule following the @media declaration).
Similarly, note that the not keyword negates media queries, it cannot be used to negate an individual feature query within a media query.*
@media not screen and (min-resolution: 300dpi), (min-width: 800px) { ... }
The styling specified here will go into effect if
In other words, if the media type is 'screen' and the min-resolution is 300 dpi, the rule will not go into effect unless the min-width of the viewport is at least 800 pixels.
(The not keyword can be a little funky to state. Let me know if I can do better. ;)
4. ONLY (only keyword)
As I understand it, the only keyword is used to prevent older browsers from misinterpreting newer media queries as the earlier-used, narrower media type. When used correctly, older/non-compliant browsers should just ignore the styling altogether.
<link rel="stylesheet" media="only screen and (color)" href="example.css" />
An older / non-compliant browser would just ignore this line of code altogether, I believe as it would read the only keyword and consider it an incorrect media type. (See here and here for more info from smarter people)
FOR MORE INFO
For more info (including more features that can be queried), see: https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Media_queries#Logical_operators
Note: I needed to learn the following terminology for everything here to make sense, particularly concerning the not keyword. Here it is as I understand it:
A media rule (MDN also seems to call these media statements) includes the term @media
with all of its ensuing media queries
@media all and (min-width: 800px)
@media only screen and (max-resolution:800dpi), not print
@media screen and (min-width: 700px), (orientation: landscape)
@media handheld, (min-width: 650px), (min-aspect-ratio: 1/1)
A media query is a set of feature queries. They can be as simple as one feature query or they can use the and keyword to form a more complex query. Media queries can be comma-separated to form more complex media rules (see the or keyword above).
screen
(Note: Only one feature query in use here.)
only screen
only screen and (max-resolution:800dpi)
only tv and (device-aspect-ratio: 16/9) and (color)
NOT handheld, (min-width: 650px)
. (Note the comma: there are two media queries here.)
A feature query is the most basic portion of a media rule and simply concerns a given feature and its status in a given browsing situation.
screen
(min-width: 650px)
(orientation: landscape)
(device-aspect-ratio: 16/9)
Code snippets and information derived from:
CSS media queries by Mozilla Contributors (licensed under CC-BY-SA 2.5). Some code samples were used with minor alterations to (hopefully) increase clarity of explanation.
Be aware that HttpOnly doesn't stop cross-site scripting; instead, it neutralizes one possible attack, and currently does that only on IE (FireFox exposes HttpOnly cookies in XmlHttpRequest, and Safari doesn't honor it at all). By all means, turn HttpOnly on, but don't drop even an hour of output filtering and fuzz testing in trade for it.
File > Edit > View Project (click)
Bottom of the drop down bow (click on Open/Current work > Properties), opened project properties page at "Build" under "Output". "Uncheck" XML Documentation checkbox.
Rebuild and no warnings.
If it's WPF, there is a collection of colors in the static class Brushes
.
TextBox.Background = Brushes.Red;
Of course, you can create your own brush if you want.
LinearGradientBrush myBrush = new LinearGradientBrush();
myBrush.GradientStops.Add(new GradientStop(Colors.Yellow, 0.0));
myBrush.GradientStops.Add(new GradientStop(Colors.Orange, 0.5));
myBrush.GradientStops.Add(new GradientStop(Colors.Red, 1.0));
TextBox.Background = myBrush;
Go to "Window -> preferences -> Server -> Runtime Environments"
Remove the existing servers they might not have downloaded completely.
Add new Server
You could save the results into a temp table, but it would be even better to go directly to the source on master.dbo.sysprocesses
.
Here's a query that will return almost the exact same result as sp_who2
:
SELECT spid,
sp.[status],
loginame [Login],
hostname,
blocked BlkBy,
sd.name DBName,
cmd Command,
cpu CPUTime,
physical_io DiskIO,
last_batch LastBatch,
[program_name] ProgramName
FROM master.dbo.sysprocesses sp
JOIN master.dbo.sysdatabases sd ON sp.dbid = sd.dbid
ORDER BY spid
Now you can easily add any ORDER BY
or WHERE
clauses you like to get meaningful output.
Alternatively, you might consider using Activity Monitor in SSMS (Ctrl + Alt + A) as well
just add
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc4</artifactId>
<version>4.0</version>
<scope>runtime</scope>
</dependency>
Simply put:
SELECT *
FROM TABLE_NAME
WHERE
dob > '1/21/2012'
Where 1/21/2012 is the date and you want all data, including that date.
SELECT *
FROM TABLE_NAME
WHERE
dob BETWEEN '1/21/2012' AND '2/22/2012'
Use a between if you're selecting time between two dates
I'd try this:
Split your Model into a separate file called model.ts
:
export class Model {
param1: string;
}
Import it into your component. This will give you the added benefit of being able to use it in other components:
Import { Model } from './model';
Initialize in the component:
export class testWidget {
public model: Model;
constructor(){
this.model = new Model();
this.model.param1 = "your string value here";
}
}
Access it appropriately in the html:
@Component({
selector: "testWidget",
template: "<div>This is a test and {{model.param1}} is my param.</div>"
})
I want to add to the answer a comment made by @PatMigliaccio because it's important to adapt to the latest tools and technologies:
If you are using
angular-cli
you can callng g class model
and it will generate it for you. model being replaced with whatever naming you desire.
Type "ctor" and press the TAB key twice this will add the default constructor automatically
You could use a traits class for this. Something like:
#include <iostream>
using namespace std;
template <typename T> class type_name {
public:
static const char *name;
};
#define DECLARE_TYPE_NAME(x) template<> const char *type_name<x>::name = #x;
#define GET_TYPE_NAME(x) (type_name<typeof(x)>::name)
DECLARE_TYPE_NAME(int);
int main()
{
int a = 12;
cout << GET_TYPE_NAME(a) << endl;
}
The DECLARE_TYPE_NAME
define exists to make your life easier in declaring this traits class for all the types you expect to need.
This might be more useful than the solutions involving typeid
because you get to control the output. For example, using typeid
for long long
on my compiler gives "x".
With {} you assign the elements as they are declared; the rest is initialized with 0.
If there is no = {}
to initalize, the content is undefined.
Try this, n would be the nth item you would want to return
SELECT DISTINCT(Salary) FROM table ORDER BY Salary DESC LIMIT n,1
Controller not supposed to be called from view. That's the whole idea of MVC - clear separation of concerns.
If you need to call controller from View - you are doing something wrong. Time for refactoring.
I recently did this. I was trying to make a compact version of my database for testing on the road, but I just couldn't get it to shrink, no matter how many rows I deleted. Eventually, after many other commands in this thread, I found that my clustered indexes were not getting rebuilt after deleting rows. Rebuilding my indexes made it so I could shrink properly.
The first line tells the shell that if you execute the script directly (./run.sh; as opposed to /bin/sh run.sh), it should use that program (/bin/sh in this case) to interpret it.
You can also use it to pass arguments, commonly -e (exit on error), or use other programs (/bin/awk, /usr/bin/perl, etc).
See my answer here: Run only one task and handler from ansible playbook
It is possible to run separate role (from roles/
dir):
ansible -i stage.yml -m include_role -a name=create-os-user localhost
and separate task file:
ansible -i stage.yml -m include_tasks -a file=tasks/create-os-user.yml localhost
If you externalize tasks from role to root tasks/
directory (reuse is achieved by import_tasks: ../../../tasks/create-os-user.yml
) you can run it independently from playbook/role.
I've used Volomike's solution updated by Jessica. Just added a check to see if the element exists, and made it return blank in case it doesn't.
jQuery.fn.outerHTML = function() {
return $(this).length > 0 ? $(this).clone().wrap('<div />').parent().html() : '';
};
Of course, use it like:
$('table#buttons').outerHTML();
I prefer the oneliner:
print(sorted(df['Column Name'].unique()))
Referring to Volomike's answer, I would suggest replacing the line
nViewH -= 250;
with
nViewH = nViewH / window.devicePixelRatio;
It works exactly as I check on a HTC Magic (PixelRatio = 1) and a Samsung Galaxy Tab 7" (PixelRatio = 1.5).
I have this code that allow me to convert from HOST_ENDIAN_ORDER (whatever it is) to LITTLE_ENDIAN_ORDER or BIG_ENDIAN_ORDER. I use a template, so if I try to convert from HOST_ENDIAN_ORDER to LITTLE_ENDIAN_ORDER and they happen to be the same for the machine for wich I compile, no code will be generated.
Here is the code with some comments:
// We define some constant for little, big and host endianess. Here I use
// BOOST_LITTLE_ENDIAN/BOOST_BIG_ENDIAN to check the host indianess. If you
// don't want to use boost you will have to modify this part a bit.
enum EEndian
{
LITTLE_ENDIAN_ORDER,
BIG_ENDIAN_ORDER,
#if defined(BOOST_LITTLE_ENDIAN)
HOST_ENDIAN_ORDER = LITTLE_ENDIAN_ORDER
#elif defined(BOOST_BIG_ENDIAN)
HOST_ENDIAN_ORDER = BIG_ENDIAN_ORDER
#else
#error "Impossible de determiner l'indianness du systeme cible."
#endif
};
// this function swap the bytes of values given it's size as a template
// parameter (could sizeof be used?).
template <class T, unsigned int size>
inline T SwapBytes(T value)
{
union
{
T value;
char bytes[size];
} in, out;
in.value = value;
for (unsigned int i = 0; i < size / 2; ++i)
{
out.bytes[i] = in.bytes[size - 1 - i];
out.bytes[size - 1 - i] = in.bytes[i];
}
return out.value;
}
// Here is the function you will use. Again there is two compile-time assertion
// that use the boost librarie. You could probably comment them out, but if you
// do be cautious not to use this function for anything else than integers
// types. This function need to be calles like this :
//
// int x = someValue;
// int i = EndianSwapBytes<HOST_ENDIAN_ORDER, BIG_ENDIAN_ORDER>(x);
//
template<EEndian from, EEndian to, class T>
inline T EndianSwapBytes(T value)
{
// A : La donnée à swapper à une taille de 2, 4 ou 8 octets
BOOST_STATIC_ASSERT(sizeof(T) == 2 || sizeof(T) == 4 || sizeof(T) == 8);
// A : La donnée à swapper est d'un type arithmetic
BOOST_STATIC_ASSERT(boost::is_arithmetic<T>::value);
// Si from et to sont du même type on ne swap pas.
if (from == to)
return value;
return SwapBytes<T, sizeof(T)>(value);
}
test.xml:
<?xml version="1.0" encoding="utf-8"?>
<Contacts>
<Node>
<ID>123</ID>
<Name>ABC</Name>
</Node>
<Node>
<ID>124</ID>
<Name>DEF</Name>
</Node>
</Contacts>
Select a single node:
XDocument XMLDoc = XDocument.Load("test.xml");
string id = "123"; // id to be selected
XElement Contact = (from xml2 in XMLDoc.Descendants("Node")
where xml2.Element("ID").Value == id
select xml2).FirstOrDefault();
Console.WriteLine(Contact.ToString());
Delete a single node:
XDocument XMLDoc = XDocument.Load("test.xml");
string id = "123";
var Contact = (from xml2 in XMLDoc.Descendants("Node")
where xml2.Element("ID").Value == id
select xml2).FirstOrDefault();
Contact.Remove();
XMLDoc.Save("test.xml");
Add new node:
XDocument XMLDoc = XDocument.Load("test.xml");
XElement newNode = new XElement("Node",
new XElement("ID", "500"),
new XElement("Name", "Whatever")
);
XMLDoc.Element("Contacts").Add(newNode);
XMLDoc.Save("test.xml");
ALTER TABLE test1 ADD COLUMN id SERIAL PRIMARY KEY;
This is all you need to:
id
columnCredit is given to @resnyanskiy who gave this answer in a comment.
string IP = HttpContext.Current.Request.Params["HTTP_CLIENT_IP"] ?? HttpContext.Current.Request.UserHostAddress;
There might two issues
1) $blogs may be a stdObject
or
2) The properties of the array might be the stdObject
Try using var_dump($blogs) and see the actual problem if the properties of array have stdObject try like this
$blog->id;
$blog->content;
$blog->title;
The original conio.h was implemented by Borland, so its not a part of the C Standard Library nor is defined by POSIX.
But here is an implementation for Linux that uses ncurses to do the job.
What about making a simple function?
function isEmptyObject(obj) {
for(var prop in obj) {
if (Object.prototype.hasOwnProperty.call(obj, prop)) {
return false;
}
}
return true;
}
isEmptyObject({}); // true
isEmptyObject({foo:'bar'}); // false
The hasOwnProperty
method call directly on the Object.prototype
is only to add little more safety, imagine the following using a normal obj.hasOwnProperty(...)
call:
isEmptyObject({hasOwnProperty:'boom'}); // false
Note: (for the future) The above method relies on the for...in
statement, and this statement iterates only over enumerable properties, in the currently most widely implemented ECMAScript Standard (3rd edition) the programmer doesn't have any way to create non-enumerable properties.
However this has changed now with ECMAScript 5th Edition, and we are able to create non-enumerable, non-writable or non-deletable properties, so the above method can fail, e.g.:
var obj = {};
Object.defineProperty(obj, 'test', { value: 'testVal',
enumerable: false,
writable: true,
configurable: true
});
isEmptyObject(obj); // true, wrong!!
obj.hasOwnProperty('test'); // true, the property exist!!
An ECMAScript 5 solution to this problem would be:
function isEmptyObject(obj) {
return Object.getOwnPropertyNames(obj).length === 0;
}
The Object.getOwnPropertyNames
method returns an Array
containing the names of all the own properties of an object, enumerable or not, this method is being implemented now by browser vendors, it's already on the Chrome 5 Beta and the latest WebKit Nightly Builds.
Object.defineProperty
is also available on those browsers and latest Firefox 3.7 Alpha releases.
We can cast an int
to a double
but we can't do the same with the wrapper classes Integer
and Double
:
int a = 1;
Integer b = 1; // inboxing, requires Java 1.5+
double c = (double) a; // OK
Double d = (Double) b; // No way.
This shows the compile time error that corresponds to your runtime exception.
C lets you use the subscript operator []
on arrays and on pointers. When you use this operator on a pointer, the resultant type is the type to which the pointer points to. For example, if you apply []
to int*
, the result would be an int
.
That is precisely what's going on: you are passing int*
, which corresponds to a vector of integers. Using subscript on it once makes it int
, so you cannot apply the second subscript to it.
It appears from your code that arr
should be a 2-D array. If it is implemented as a "jagged" array (i.e. an array of pointers) then the parameter type should be int **
.
Moreover, it appears that you are trying to return a local array. In order to do that legally, you need to allocate the array dynamically, and return a pointer. However, a better approach would be declaring a special struct
for your 4x4 matrix, and using it to wrap your fixed-size array, like this:
// This type wraps your 4x4 matrix
typedef struct {
int arr[4][4];
} FourByFour;
// Now rotate(m) can use FourByFour as a type
FourByFour rotate(FourByFour m) {
FourByFour D;
for(int i = 0; i < 4; i ++ ){
for(int n = 0; n < 4; n++){
D.arr[i][n] = m.arr[n][3 - i];
}
}
return D;
}
// Here is a demo of your rotate(m) in action:
int main(void) {
FourByFour S = {.arr = {
{ 1, 4, 10, 3 },
{ 0, 6, 3, 8 },
{ 7, 10 ,8, 5 },
{ 9, 5, 11, 2}
} };
FourByFour r = rotate(S);
for(int i=0; i < 4; i ++ ){
for(int n=0; n < 4; n++){
printf("%d ", r.arr[i][n]);
}
printf("\n");
}
return 0;
}
This prints the following:
3 8 5 2
10 3 8 11
4 6 10 5
1 0 7 9
I just hide() the tinymce and submit form, the changed value of textarea missing. So I added this:
$("textarea[id='id_answer']").change(function(){
var editor_id = $(this).attr('id');
var editor = tinymce.get(editor_id);
editor.setContent($(this).val()).save();
});
It works for me.
To make the solution by @flion look really great, you could adjust the center point for that icon so it doesn't wobble up and down. This looks right for me at a small font size:
.glyphicon-refresh.spinning {
transform-origin: 48% 50%;
}
If you are serious about wanting an exact copy, you probably also want to use the -p switch to scp, if you're using that. I've found that scp reads from devices, and I've had problems with cpio, so I personally always use tar, like this:
cd /origin; find . -xdev -depth -not -path ./lost+found -print0 \
| tar --create --atime-preserve=system --null --files-from=- --format=posix \
--no-recursion --sparse | ssh targethost 'cd /target; tar --extract \
--overwrite --preserve-permissions --sparse'
I keep this incantation around in a file with various other means of copying files around. This one is for copying over SSH; the other ones are for copying to a compressed archive, for copying within the same computer, and for copying over an unencrypted TCP socket when SSH is too slow.
JQuery load works, but it will strip out javascript and other elements from the source page. This makes sense because you might not want to introduce bad script on your page. I think this is a limitation and since you are doing a whole page and not just a div on the source page, you might not want to use it. (I am not sure about css, but I think it would also get stripped)
In this example, if you put a tag around the body of your source page, it will grab anything in between the tags and won't strip anything out. I wrap my source page with and .
This solution will grab everything between the above delimiters. I feel it is a much more robust solution than a simple load.
var content = $('.contentDiv');
content.load(urlAddress, function (response, status, xhr) {
var fullPageTextAsString = response;
var pageTextBetweenDelimiters = fullPageTextAsString.substring(fullPageTextAsString.indexOf("<jqueryloadmarkerstart />"), fullPageTextAsString.indexOf("<jqueryloadmarkerend />"));
content.html(pageTextBetweenDelimiters);
});
If there is no way to tell where the string will be (first half, second half, etc) then there is really no optimized way to do the search other than the builtin "find" function. You could reduce the I/O time and memory consumption by not reading the file all in one shot, but at 4kb blocks (which is usually the size of an hard disk block). This will not make the search faster, unless the string is in the first part of the file, but in all case will reduce memory consumption which might be a good idea if the file is huge.
My XAML is as below:
<ComboBox Grid.Row="2" Grid.Column="1" Height="25" Width="200" SelectedIndex="0" Name="cmbDeviceDefinitionId">
<ComboBoxItem Content="United States" Name="US"></ComboBoxItem>
<ComboBoxItem Content="European Union" Name="EU"></ComboBoxItem>
<ComboBoxItem Content="Asia Pacific" Name="AP"></ComboBoxItem>
</ComboBox>
The content is showing as text and the name of the WPF combobox. To get the name of the selected item, I have follow this line of code:
ComboBoxItem ComboItem = (ComboBoxItem)cmbDeviceDefinitionId.SelectedItem;
string name = ComboItem.Name;
To get the selected text of a WPF combobox:
string name = cmbDeviceDefinitionId.SelectionBoxItem.ToString();
If you are looking for a rapid, normalized cross correlation in either one or two dimensions
I would recommend the openCV library (see http://opencv.willowgarage.com/wiki/ http://opencv.org/). The cross-correlation code maintained by this group is the fastest you will find, and it will be normalized (results between -1 and 1).
While this is a C++ library the code is maintained with CMake and has python bindings so that access to the cross correlation functions is convenient. OpenCV also plays nicely with numpy. If I wanted to compute a 2-D cross-correlation starting from numpy arrays I could do it as follows.
import numpy
import cv
#Create a random template and place it in a larger image
templateNp = numpy.random.random( (100,100) )
image = numpy.random.random( (400,400) )
image[:100, :100] = templateNp
#create a numpy array for storing result
resultNp = numpy.zeros( (301, 301) )
#convert from numpy format to openCV format
templateCv = cv.fromarray(numpy.float32(template))
imageCv = cv.fromarray(numpy.float32(image))
resultCv = cv.fromarray(numpy.float32(resultNp))
#perform cross correlation
cv.MatchTemplate(templateCv, imageCv, resultCv, cv.CV_TM_CCORR_NORMED)
#convert result back to numpy array
resultNp = np.asarray(resultCv)
For just a 1-D cross-correlation create a 2-D array with shape equal to (N, 1 ). Though there is some extra code involved to convert to an openCV format the speed-up over scipy is quite impressive.
I had the same problem.
system configuration:-single system with window 7 sp1 server and client both are installed on same system
I was trying to access the window desktop. As some the answer say that your Sqlserver service don't have full access to the directory. This is totally right.
I solved this problem by doing a few simple steps
Steps 3 and 4 in image are demo with accessing the folder
@Adrian Cornish's answer is correct. However, there is another caveat to dropping an existing primary key. If that primary key is being used as a foreign key by another table you will get an error when trying to drop it. In some versions of mysql the error message there was malformed (as of 5.5.17, this error message is still
alter table parent drop column id;
ERROR 1025 (HY000): Error on rename of
'./test/#sql-a04_b' to './test/parent' (errno: 150).
If you want to drop a primary key that's being referenced by another table, you will have to drop the foreign key in that other table first. You can recreate that foreign key if you still want it after you recreate the primary key.
Also, when using composite keys, order is important. These
1) ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
and
2) ALTER TABLE provider ADD PRIMARY KEY(person,thing,place);
are not the the same thing. They both enforce uniqueness on that set of three fields, however from an indexing standpoint there is a difference. The fields are indexed from left to right. For example, consider the following queries:
A) SELECT person, place, thing FROM provider WHERE person = 'foo' AND thing = 'bar';
B) SELECT person, place, thing FROM provider WHERE person = 'foo' AND place = 'baz';
C) SELECT person, place, thing FROM provider WHERE person = 'foo' AND place = 'baz' AND thing = 'bar';
D) SELECT person, place, thing FROM provider WHERE place = 'baz' AND thing = 'bar';
B can use the primary key index in ALTER statement 1
A can use the primary key index in ALTER statement 2
C can use either index
D can't use either index
A uses the first two fields in index 2 as a partial index. A can't use index 1 because it doesn't know the intermediate place portion of the index. It might still be able to use a partial index on just person though.
D can't use either index because it doesn't know person.
See the mysql docs here for more information.
This has been answered for the most part, but I will expand...
Step 1
My goal was to enable zoom at certain times, and disable it at others.
// enable pinch zoom
var $viewport = $('head meta[name="viewport"]');
$viewport.attr('content', 'width=device-width, initial-scale=1, maximum-scale=4');
// ...later...
// disable pinch zoom
$viewport.attr('content', 'width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no');
Step 2
The viewport tag would update, but pinch zoom was still active!! I had to find a way to get the page to pick up the changes...
It's a hack solution, but toggling the opacity of body did the trick. I'm sure there are other ways to accomplish this, but here's what worked for me.
// after updating viewport tag, force the page to pick up changes
document.body.style.opacity = .9999;
setTimeout(function(){
document.body.style.opacity = 1;
}, 1);
Step 3
My problem was mostly solved at this point, but not quite. I needed to know the current zoom level of the page so I could resize some elements to fit on the page (think of map markers).
// check zoom level during user interaction, or on animation frame
var currentZoom = $document.width() / window.innerWidth;
I hope this helps somebody. I spent several hours banging my mouse before finding a solution.
This error is caused because the function createObjectURL
is deprecated for Google Chrome
I changed this:
video.src=vendorUrl.createObjectURL(stream);
video.play();
to this:
video.srcObject=stream;
video.play();
This worked for me.
IOS 11.2 Swift 3.1- 4
let webView = WKWebView()
override func viewDidLoad() {
super.viewDidLoad()
guard let url = URL(string: "https://www.google.com") else { return }
webView.frame = view.bounds
webView.navigationDelegate = self
webView.load(URLRequest(url: url))
webView.autoresizingMask = [.flexibleWidth,.flexibleHeight]
view.addSubview(webView)
}
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
if navigationAction.navigationType == .linkActivated {
if let url = navigationAction.request.url,
let host = url.host, !host.hasPrefix("www.google.com"),
UIApplication.shared.canOpenURL(url) {
UIApplication.shared.open(url)
print(url)
print("Redirected to browser. No need to open it locally")
decisionHandler(.cancel)
} else {
print("Open it locally")
decisionHandler(.allow)
}
} else {
print("not a user click")
decisionHandler(.allow)
}
}
txt = txt.Trim();
Actually it depends on your use case.
1) You want to protect your route from unauthorized users
If that is the case you can use the component called <Redirect />
and can implement the following logic:
import React from 'react'
import { Redirect } from 'react-router-dom'
const ProtectedComponent = () => {
if (authFails)
return <Redirect to='/login' />
}
return <div> My Protected Component </div>
}
Keep in mind that if you want <Redirect />
to work the way you expect, you should place it inside of your component's render method so that it should eventually be considered as a DOM element, otherwise it won't work.
2) You want to redirect after a certain action (let's say after creating an item)
In that case you can use history:
myFunction() {
addSomeStuff(data).then(() => {
this.props.history.push('/path')
}).catch((error) => {
console.log(error)
})
or
myFunction() {
addSomeStuff()
this.props.history.push('/path')
}
In order to have access to history, you can wrap your component with an HOC called withRouter
. When you wrap your component with it, it passes match
location
and history
props. For more detail please have a look at the official documentation for withRouter.
If your component is a child of a <Route />
component, i.e. if it is something like <Route path='/path' component={myComponent} />
, you don't have to wrap your component with withRouter
, because <Route />
passes match
, location
, and history
to its child.
3) Redirect after clicking some element
There are two options here. You can use history.push()
by passing it to an onClick
event:
<div onClick={this.props.history.push('/path')}> some stuff </div>
or you can use a <Link />
component:
<Link to='/path' > some stuff </Link>
I think the rule of thumb with this case is to try to use <Link />
first, I suppose especially because of performance.
Have you verified that there is in fact a row where Staff_Id = @PersonID? What you've posted works fine in a test script, assuming the row exists. If you comment out the insert statement, then the error is raised.
set nocount on
create table Timesheet_Hours (Staff_Id int, BookedHours int, Posted_Flag bit)
insert into Timesheet_Hours (Staff_Id, BookedHours, Posted_Flag) values (1, 5.5, 0)
declare @PersonID int
set @PersonID = 1
IF EXISTS
(
SELECT 1
FROM Timesheet_Hours
WHERE Posted_Flag = 1
AND Staff_Id = @PersonID
)
BEGIN
RAISERROR('Timesheets have already been posted!', 16, 1)
ROLLBACK TRAN
END
ELSE
IF NOT EXISTS
(
SELECT 1
FROM Timesheet_Hours
WHERE Staff_Id = @PersonID
)
BEGIN
RAISERROR('Default list has not been loaded!', 16, 1)
ROLLBACK TRAN
END
ELSE
print 'No problems here'
drop table Timesheet_Hours
You can use closures to pass parameters:
iframe.document.addEventListener('click', function(event) {clic(this.id);}, false);
However, I recommend that you use a better approach to access your frame (I can only assume that you are using the DOM0 way of accessing frame windows by their name - something that is only kept around for backwards compatibility):
document.getElementById("myFrame").contentDocument.addEventListener(...);
Here's what I've been doing:
public void displayError(final String errorText) {
Runnable doDisplayError = new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(), errorText, Toast.LENGTH_LONG).show();
}
};
messageHandler.post(doDisplayError);
}
That should allow the method to be called from either thread.
Where messageHandler is declared in the activity as ..
Handler messageHandler = new Handler();
As it was said already @INC is an array and you're free to add anything you want.
My CGI REST script looks like:
#!/usr/bin/perl
use strict;
use warnings;
BEGIN {
push @INC, 'fully_qualified_path_to_module_wiht_our_REST.pm';
}
use Modules::Rest;
gone(@_);
Subroutine gone is exported by Rest.pm.
If anybody is interested in using regex with CLR here is a solution. The function below (C# .net 4.5) returns a 1 if the pattern is matched and a 0 if the pattern is not matched. I use it to tag lines in sub queries. The SQLfunction attribute tells sql server that this method is the actual UDF that SQL server will use. Save the file as a dll in a place where you can access it from management studio.
// default using statements above
using System.Data.SqlClient;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;
using System.Text.RegularExpressions;
namespace CLR_Functions
{
public class myFunctions
{
[SqlFunction]
public static SqlInt16 RegexContain(SqlString text, SqlString pattern)
{
SqlInt16 returnVal = 0;
try
{
string myText = text.ToString();
string myPattern = pattern.ToString();
MatchCollection mc = Regex.Matches(myText, myPattern);
if (mc.Count > 0)
{
returnVal = 1;
}
}
catch
{
returnVal = 0;
}
return returnVal;
}
}
}
In management studio import the dll file via programability -- assemblies -- new assembly
Then run this query:
CREATE FUNCTION RegexContain(@text NVARCHAR(50), @pattern NVARCHAR(50))
RETURNS smallint
AS
EXTERNAL NAME CLR_Functions.[CLR_Functions.myFunctions].RegexContain
Then you should have complete access to the function via the database you stored the assembly in.
Then use in queries like so:
SELECT *
FROM
(
SELECT
DailyLog.Date,
DailyLog.Researcher,
DailyLog.team,
DailyLog.field,
DailyLog.EntityID,
DailyLog.[From],
DailyLog.[To],
dbo.RegexContain(Researcher, '[\p{L}\s]+') as 'is null values'
FROM [DailyOps].[dbo].[DailyLog]
) AS a
WHERE a.[is null values] = 0
Try this
Scanner scanner = new Scanner(System.in);
int amountOfPlayers;
do {
System.out.print("Select the amount of players (1/2): ");
while (!scanner.hasNextInt()) {
System.out.println("That's not a number!");
scanner.next(); // this is important!
}
amountOfPlayers = scanner.nextInt();
} while ((amountOfPlayers <= 0) || (amountOfPlayers > 2));
if(scanner != null) {
scanner.close();
}
System.out.println("You've selected " + amountOfPlayers+" player(s).");
There might be Several plugins but one may use CSS for creating button. First of all click on Source button mentioned in Editor then paste the button code over there, As I use CSS to create button and added href to it.
<p dir="ltr" style="text-align:center"><a href="https://play.google.com/store/apps/details?id=com.mobicom.mobiune&hl=en" style="background-color:#0080ff; border: none;color: white;padding: 6px 20px;text-align: center;text-decoration: none;display: inline-block;border-radius: 8px;font-size: 15px; font-weight: bold;">Open App</a></p>
This is the Button Written Open App over It. You May change the Color as i am using #0080ff (Light Blue)
If you have Gimp, I saw that exporting the image in .eps format would do the job.
We can separate out section of which we need to convert in PDF
For example, if table is in class "pdf-table-wrap"
After this, we need to call html2canvas function combined with jsPDF
following is sample code
var pdf = new jsPDF('p', 'pt', [580, 630]);
html2canvas($(".pdf-table-wrap")[0], {
onrendered: function(canvas) {
document.body.appendChild(canvas);
var ctx = canvas.getContext('2d');
var imgData = canvas.toDataURL("image/png", 1.0);
var width = canvas.width;
var height = canvas.clientHeight;
pdf.addImage(imgData, 'PNG', 20, 20, (width - 10), (height));
}
});
setTimeout(function() {
//jsPDF code to save file
pdf.save('sample.pdf');
}, 0);
Complete tutorial is given here http://freakyjolly.com/create-multipage-html-pdf-jspdf-html2canvas/
Use ldd (man ldd) to show shared library dependencies. Running this on libqxcb.so
.../platforms$ ldd libqxcb.so
shows that xcb depends on libQt5DBus.so.5 in addition to libQt5Core.so.5 and libQt5Gui.so.5 (and many other system libs). Add libQt5DBus.so.5 to your collection of shared libs and you should be ready to move on.
I use the following method in my project
-(NSArray*)networkErrorCodes
{
static NSArray *codesArray;
if (![codesArray count]){
@synchronized(self){
const int codes[] = {
//kCFURLErrorUnknown, //-998
//kCFURLErrorCancelled, //-999
//kCFURLErrorBadURL, //-1000
//kCFURLErrorTimedOut, //-1001
//kCFURLErrorUnsupportedURL, //-1002
//kCFURLErrorCannotFindHost, //-1003
kCFURLErrorCannotConnectToHost, //-1004
kCFURLErrorNetworkConnectionLost, //-1005
kCFURLErrorDNSLookupFailed, //-1006
//kCFURLErrorHTTPTooManyRedirects, //-1007
kCFURLErrorResourceUnavailable, //-1008
kCFURLErrorNotConnectedToInternet, //-1009
//kCFURLErrorRedirectToNonExistentLocation, //-1010
kCFURLErrorBadServerResponse, //-1011
//kCFURLErrorUserCancelledAuthentication, //-1012
//kCFURLErrorUserAuthenticationRequired, //-1013
//kCFURLErrorZeroByteResource, //-1014
//kCFURLErrorCannotDecodeRawData, //-1015
//kCFURLErrorCannotDecodeContentData, //-1016
//kCFURLErrorCannotParseResponse, //-1017
kCFURLErrorInternationalRoamingOff, //-1018
kCFURLErrorCallIsActive, //-1019
//kCFURLErrorDataNotAllowed, //-1020
//kCFURLErrorRequestBodyStreamExhausted, //-1021
kCFURLErrorFileDoesNotExist, //-1100
//kCFURLErrorFileIsDirectory, //-1101
kCFURLErrorNoPermissionsToReadFile, //-1102
//kCFURLErrorDataLengthExceedsMaximum, //-1103
};
int size = sizeof(codes)/sizeof(int);
NSMutableArray *array = [[NSMutableArray alloc] init];
for (int i=0;i<size;++i){
[array addObject:[NSNumber numberWithInt:codes[i]]];
}
codesArray = [array copy];
}
}
return codesArray;
}
Then I just check the error code and show alert if it is in the list
if ([[self networkErrorCodes] containsObject:[NSNumber
numberWithInt:[error code]]]){
// Fire Alert View Here
}
But as you can see I commented out codes that I think does not fit to my definition of NO INTERNET. E.g the code of -1012 (Authentication fail.) You may edit the list as you like.
In my project I use it at username/password entering from user. And in my view (physical) network connection errors could be the only reason to show alert view in your network based app. In any other case (e.g. incorrect username/password pair) I prefer to do some custom user friendly animation, OR just repeat the failed attempt again without any attention of the user. Especially if the user didn't explicitly initiated a network call.
Regards to martinezdelariva for a link to documentation.
Try following code that worked fine for me
global $current_user;
get_currentuserinfo();
Then, use following code to check whether user has logged in or not.
if ($current_user->ID == '') {
//show nothing to user
}
else {
//write code to show menu here
}
dir /ad /b /s
will give the required answer.
You can also "prepend" the environment variable setting by using 'environment' command:
run.doFirst { environment 'SPARK_LOCAL_IP', 'localhost' }
After INSERT
query you can use ROW_COUNT()
to check for successful insert operation as:
SELECT IF(ROW_COUNT() = 1, "Insert Success", "Insert Failed") As status;
android:background="@drawable/eye"
works automatically.
android:src="@drawable/eye"
was what I used with all the problems of resizing the image the the width and height of the button...
Two Solutions:
If you use Percona Mysql server
$ yum install Percona-Server-devel-55
$ gem install mysql
m
- for classes that set margin, like this :
mt
- for classes that set margin-top
mb
- for classes that set margin-bottom
ml
- for classes that set margin-left
mr
- for classes that set margin-right
mx
- for classes that set both margin-left
and margin-right
my
- for classes that set both margin-top
and margin-bottom
Where size is one of margin :
0
- for classes that eliminate the margin by setting it to
0, like mt-0
1
- (by default) for classes that set the margin to
$spacer * .25, like mt-1
2
- (by default) for classes that set the margin to
$spacer * .5, like mt-2
3
- (by default) for classes that set the margin to
$spacer, like mt-3
4
- (by default) for classes that set the margin to
$spacer * 1.5, like mt-4
5
- (by default) for classes that set the margin to $spacer * 3, like mt-5
auto
- for classes that set the margin to auto, like mx-auto
I was able to do this for the JDK14 binding by first requesting the SLF4J Logger instance and then setting the level on the binding -- you may try this for the Log4J binding.
private void setLevel(Class loggerClass, java.util.logging.Level level) {
org.slf4j.LoggerFactory.getLogger(loggerClass);
java.util.logging.Logger.getLogger(loggerClass.getName()).setLevel(level);
}
In this post Scrollview vertical and horizontal in android they talk about a possible solution, quoting:
Matt Clark has built a custom view based on the Android source, and it seems to work perfectly: http://blog.gorges.us/2010/06/android-two-dimensional-scrollview
Beware that the class in that page has a bug calculating the view's horizonal width. A fix by Manuel Hilty is in the comments:
Solution: Replace the statement on line 808 by the following:
final int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(lp.leftMargin + lp.rightMargin, MeasureSpec.UNSPECIFIED);
Npm and Bower are both dependency management tools. But the main difference between both is npm is used for installing Node js modules but bower js is used for managing front end components like html, css, js etc.
A fact that makes this more confusing is that npm provides some packages which can be used in front-end development as well, like grunt
and jshint
.
These lines add more meaning
Bower, unlike npm, can have multiple files (e.g. .js, .css, .html, .png, .ttf) which are considered the main file(s). Bower semantically considers these main files, when packaged together, a component.
Edit: Grunt is quite different from Npm and Bower. Grunt is a javascript task runner tool. You can do a lot of things using grunt which you had to do manually otherwise. Highlighting some of the uses of Grunt:
There are grunt plugins for sass compilation, uglifying your javascript, copy files/folders, minifying javascript etc.
Please Note that grunt plugin is also an npm package.
Question-1
When I want to add a package (and check in the dependency into git), where does it belong - into package.json or into bower.json
It really depends where does this package belong to. If it is a node module(like grunt,request) then it will go in package.json otherwise into bower json.
Question-2
When should I ever install packages explicitly like that without adding them to the file that manages dependencies
It does not matter whether you are installing packages explicitly or mentioning the dependency in .json file. Suppose you are in the middle of working on a node project and you need another project, say request
, then you have two options:
OR
npm install --save request
--save
options adds the dependency to package.json file as well. If you don't specify --save
option, it will only download the package but the json file will be unaffected.
You can do this either way, there will not be a substantial difference.
Maybe this could be a little older article. but must of the above answers don´t help me as I need. Then I wrote a little snippet for that.
This accepts any XML that hast at least 3 levels (Like this sample):
<XmlData>
<XmlRow>
<XmlField1>Data 1</XmlField1>
<XmlField2>Data 2</XmlField2>
<XmlField3>Data 3</XmlField3>
.......
</XmlRow>
</XmlData>
public static class XmlParser
{
/// <summary>
/// Converts XML string to DataTable
/// </summary>
/// <param name="Name">DataTable name</param>
/// <param name="XMLString">XML string</param>
/// <returns></returns>
public static DataTable BuildDataTableFromXml(string Name, string XMLString)
{
XmlDocument doc = new XmlDocument();
doc.Load(new StringReader(XMLString));
DataTable Dt = new DataTable(Name);
try
{
XmlNode NodoEstructura = doc.FirstChild.FirstChild;
// Table structure (columns definition)
foreach (XmlNode columna in NodoEstructura.ChildNodes)
{
Dt.Columns.Add(columna.Name, typeof(String));
}
XmlNode Filas = doc.FirstChild;
// Data Rows
foreach (XmlNode Fila in Filas.ChildNodes)
{
List<string> Valores = new List<string>();
foreach (XmlNode Columna in Fila.ChildNodes)
{
Valores.Add(Columna.InnerText);
}
Dt.Rows.Add(Valores.ToArray());
}
} catch(Exception)
{
}
return Dt;
}
}
This solve my problem
Java version
/**
* @param uniqueList
* @param permutationSize
* @param permutation
* @param only Only show the permutation of permutationSize,
* else show all permutation of less than or equal to permutationSize.
*/
public static void my_permutationOf(List<Integer> uniqueList, int permutationSize, List<Integer> permutation, boolean only) {
if (permutation == null) {
assert 0 < permutationSize && permutationSize <= uniqueList.size();
permutation = new ArrayList<>(permutationSize);
if (!only) {
System.out.println(Arrays.toString(permutation.toArray()));
}
}
for (int i : uniqueList) {
if (permutation.contains(i)) {
continue;
}
permutation.add(i);
if (!only) {
System.out.println(Arrays.toString(permutation.toArray()));
} else if (permutation.size() == permutationSize) {
System.out.println(Arrays.toString(permutation.toArray()));
}
if (permutation.size() < permutationSize) {
my_permutationOf(uniqueList, permutationSize, permutation, only);
}
permutation.remove(permutation.size() - 1);
}
}
E.g.
public static void main(String[] args) throws Exception {
my_permutationOf(new ArrayList<Integer>() {
{
add(1);
add(2);
add(3);
}
}, 3, null, true);
}
output:
[1, 2, 3]
[1, 3, 2]
[2, 1, 3]
[2, 3, 1]
[3, 1, 2]
[3, 2, 1]
The reason why @Resource(name = "{your child class name}") works but @Autowired sometimes don't work is because of the difference of their Matching sequence
Matching sequence of @Autowire
Type, Qualifier, Name
Matching sequence of @Resource
Name, Type, Qualifier
The more detail explanation can be found here:
Inject and Resource and Autowired annotations
In this case, different child class inherited from the parent class or interface confuses @Autowire, because they are from same type; As @Resource use Name as first matching priority , it works.
For me the problem was that I was passing Activity to the constructor, not Context
public Adapter(Activity activity, List<MediaItem> items, boolean can) {
mItems = items;
canEdit = can;
mActivity = activity;
}
and using this activity to getDefaultSharedPreferences(), so I changed the Activity to Context and I was still calling the Adapter constructor with MainActivity.this
To run Tomcat8 you need to have JRE_HOME defined in Env Variable.
JAVA_HOME alone will not do even if correctly set.
JRE_HOME = C:\Program Files\Java\jdk1.8.0_77\jre
You should select the JRE that is inside SDK, i.e. one with your JDK(SDK) installation. In other words your JAVA_HOME + \jre
When compiling JDK is needed to support JSP, to compile Servlets which are generated from *.jsp files. Otherwise to run JRE is needed. So when you develop you need JAVA_HOME and when you deploy you need JRE_HOME.
What about this:
var txt="";
var nyc = {
fullName: "New York City",
mayor: "Michael Bloomberg",
population: 8000000,
boroughs: 5
};
for (var x in nyc){
txt += nyc[x];
}
Copy =VLOOKUP(M3,A$2:Q$47,13,FALSE)
to other sheets, then search for ! replace by !$, search for : replace by :$ one time for all sheets
If anyone still has problem, this is my code.
I have a custom view which is square (width = height) and I want to assign a character to it. onDraw()
shows how to get height of character, although I'm not using it. Character will be displayed in the middle of view.
public class SideBarPointer extends View {
private static final String TAG = "SideBarPointer";
private Context context;
private String label = "";
private int width;
private int height;
public SideBarPointer(Context context) {
super(context);
this.context = context;
init();
}
public SideBarPointer(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
init();
}
public SideBarPointer(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.context = context;
init();
}
private void init() {
// setBackgroundColor(0x64FF0000);
}
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
height = this.getMeasuredHeight();
width = this.getMeasuredWidth();
setMeasuredDimension(width, width);
}
protected void onDraw(Canvas canvas) {
float mDensity = context.getResources().getDisplayMetrics().density;
float mScaledDensity = context.getResources().getDisplayMetrics().scaledDensity;
Paint previewPaint = new Paint();
previewPaint.setColor(0x0C2727);
previewPaint.setAlpha(200);
previewPaint.setAntiAlias(true);
Paint previewTextPaint = new Paint();
previewTextPaint.setColor(Color.WHITE);
previewTextPaint.setAntiAlias(true);
previewTextPaint.setTextSize(90 * mScaledDensity);
previewTextPaint.setShadowLayer(5, 1, 2, Color.argb(255, 87, 87, 87));
float previewTextWidth = previewTextPaint.measureText(label);
// float previewTextHeight = previewTextPaint.descent() - previewTextPaint.ascent();
RectF previewRect = new RectF(0, 0, width, width);
canvas.drawRoundRect(previewRect, 5 * mDensity, 5 * mDensity, previewPaint);
canvas.drawText(label, (width - previewTextWidth)/2, previewRect.top - previewTextPaint.ascent(), previewTextPaint);
super.onDraw(canvas);
}
public void setLabel(String label) {
this.label = label;
Log.e(TAG, "Label: " + label);
this.invalidate();
}
}
Yes, REM and PX are relative yet other answers have suggested to go for REM over PX, I would also like to back this up using an accessibility example.
When user sets different font-size on browser, REM automatically scale up and down elements like fonts, images etc on the webpage which is not the case with PX.
In the below gif left side text is set using font size REM unit while right side font is set by PX unit.
As you can see that REM is scaling up/down automatically when I resize the default font-size of webpage.(bottom-right side)
Default font-size of a webpage is 16px which is equal to 1 rem (only for default html page i.e. html{font-size:100%}
), so, 1.25rem is equal to 20px.
P.S: who else is using REM? CSS Frameworks! like Bootstrap 4, Bulma CSS etc, so better get along with it.
First add #include <cmath>
then
you can use pow
methode in your code for example :
pow(3.5, 3);
Which 3.5 is base and 3 is exp
Use Convert.ToInt32() for conversion. You can have a look at How to convert string to ASCII value in C# and ASCII values.
The easiest way I find is to create a file "any_name.pth" and put it in your folder "\Lib\site-packages". You should find that folder wherever python is installed.
In that file, put a list of directories where you want to keep modules for importing. For instance, make a line in that file like this:
C:\Users\example...\example
You will be able to tell it works by running this in python:
import sys
for line in sys: print line
You will see your directory printed out, amongst others from where you can also import. Now you can import a "mymodule.py" file that sits in that directory as easily as:
import mymodule
This will not import subfolders. For that you could imagine creating a python script to create a .pth file containing all sub folders of a folder you define. Have it run at startup perhaps.
Sqlite helper class helps us to manage database creation and version management.
SQLiteOpenHelper takes care of all database management activities. To use it,
1.Override onCreate(), onUpgrade()
methods of SQLiteOpenHelper
. Optionally override onOpen() method.
2.Use this subclass to create either a readable or writable database and use the SQLiteDatabase's four API methods insert(), execSQL(), update(), delete()
to create, read, update and delete rows of your table.
Example to create a MyEmployees table and to select and insert records:
public class MyDatabaseHelper extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "DBName";
private static final int DATABASE_VERSION = 2;
// Database creation sql statement
private static final String DATABASE_CREATE = "create table MyEmployees
( _id integer primary key,name text not null);";
public MyDatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Method is called during creation of the database
@Override
public void onCreate(SQLiteDatabase database) {
database.execSQL(DATABASE_CREATE);
}
// Method is called during an upgrade of the database,
@Override
public void onUpgrade(SQLiteDatabase database,int oldVersion,int newVersion){
Log.w(MyDatabaseHelper.class.getName(),
"Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
database.execSQL("DROP TABLE IF EXISTS MyEmployees");
onCreate(database);
}
}
Now you can use this class as below,
public class MyDB{
private MyDatabaseHelper dbHelper;
private SQLiteDatabase database;
public final static String EMP_TABLE="MyEmployees"; // name of table
public final static String EMP_ID="_id"; // id value for employee
public final static String EMP_NAME="name"; // name of employee
/**
*
* @param context
*/
public MyDB(Context context){
dbHelper = new MyDatabaseHelper(context);
database = dbHelper.getWritableDatabase();
}
public long createRecords(String id, String name){
ContentValues values = new ContentValues();
values.put(EMP_ID, id);
values.put(EMP_NAME, name);
return database.insert(EMP_TABLE, null, values);
}
public Cursor selectRecords() {
String[] cols = new String[] {EMP_ID, EMP_NAME};
Cursor mCursor = database.query(true, EMP_TABLE,cols,null
, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor; // iterate to get each value.
}
}
Now you can use MyDB class in you activity to have all the database operations. The create records will help you to insert the values similarly you can have your own functions for update and delete.
You can try something like Routes.js
import React, { Component } from 'react'
import { BrowserRouter as Router, Route } from 'react-router-dom';
import FrontPage from './FrontPage';
import Dashboard from './Dashboard';
import AboutPage from './AboutPage';
import Backend from './Backend';
import Homepage from './Homepage';
import UserPage from './UserPage';
class Routes extends Component {
render() {
return (
<div>
<Route exact path="/" component={FrontPage} />
<Route exact path="/home" component={Homepage} />
<Route exact path="/about" component={AboutPage} />
<Route exact path="/admin" component={Backend} />
<Route exact path="/admin/home" component={Dashboard} />
<Route exact path="/users" component={UserPage} />
</div>
)
}
}
export default Routes
App.js
import React, { Component } from 'react';
import logo from './logo.svg';
import './App.css';
import { BrowserRouter as Router, Route } from 'react-router-dom'
import Routes from './Routes';
class App extends Component {
render() {
return (
<div className="App">
<Router>
<Routes/>
</Router>
</div>
);
}
}
export default App;
I think you can achieve the same from here also.
An activity populates the ActionBar in its onCreateOptionsMenu()
method.
Instead of using setcustomview()
, just override onCreateOptionsMenu
like this:
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.mainmenu, menu);
return true;
}
If an actions in the ActionBar is selected, the onOptionsItemSelected()
method is called. It receives the selected action as parameter. Based on this information you code can decide what to do for example:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menuitem1:
Toast.makeText(this, "Menu Item 1 selected", Toast.LENGTH_SHORT).show();
break;
case R.id.menuitem2:
Toast.makeText(this, "Menu item 2 selected", Toast.LENGTH_SHORT).show();
break;
}
return true;
}
re.search
searches for the pattern throughout the string, whereas re.match
does not search the pattern; if it does not, it has no other choice than to match it at start of the string.
Use empty
(it checks both nullness and emptiness) and group the nested ternary expression by parentheses (EL is in certain implementations/versions namely somewhat problematic with nested ternary expressions). Thus, so:
styleClass="#{empty obj.validationErrorMap ? ' ' :
(obj.validationErrorMap.contains('key') ? 'highlight_field' : 'highlight_row')}"
If still in vain (I would then check JBoss EL configs), use the "normal" EL approach:
styleClass="#{empty obj.validationErrorMap ? ' ' :
(obj.validationErrorMap['key'] ne null ? 'highlight_field' : 'highlight_row')}"
Update: as per the comments, the Map
turns out to actually be a List
(please work on your naming conventions). To check if a List
contains an item the "normal" EL way, use JSTL fn:contains
(although not explicitly documented, it works for List
as well).
styleClass="#{empty obj.validationErrorMap ? ' ' :
(fn:contains(obj.validationErrorMap, 'key') ? 'highlight_field' : 'highlight_row')}"
Javascript which runs on the client machine can't access the local disk file system due to security restrictions.
If you want to access the client's disk file system then look into an embedded client application which you serve up from your webpage, like an Applet, Silverlight or something like that. If you like to access the server's disk file system, then look for the solution in the server side corner using a server side programming language like Java, PHP, etc, whatever your webserver is currently using/supporting.
You can use it
$params = request()->all();
without
import Illuminate\Http\Request
OR
use Illuminate\Support\Facades\Request
OR other.
var now = DateTime.Now;
var age = DateTime.Now.Year - dob.Year;
if (now.Month < dob.Month || now.Month == dob.Month && now.Day < dob.Day) age--;
Here's my simple solution that returns a unique integer.
function hashcode(obj) {
var hc = 0;
var chars = JSON.stringify(obj).replace(/\{|\"|\}|\:|,/g, '');
var len = chars.length;
for (var i = 0; i < len; i++) {
// Bump 7 to larger prime number to increase uniqueness
hc += (chars.charCodeAt(i) * 7);
}
return hc;
}
Normally you would select IDs using the ID selector #
, but for more complex matches you can use the attribute-starts-with selector (as a jQuery selector, or as a CSS3 selector):
div[id^="player_"]
If you are able to modify that HTML, however, you should add a class to your player div
s then target that class. You'll lose the additional specificity offered by ID selectors anyway, as attribute selectors share the same specificity as class selectors. Plus, just using a class makes things much simpler.
Another option would be to use the chromestorage API. This allows storage of user data with optional syncing across sessions.
One downside is that it is asynchronous.
function converToLocalTime(serverDate) {
var dt = new Date(Date.parse(serverDate));
var localDate = dt;
var gmt = localDate;
var min = gmt.getTime() / 1000 / 60; // convert gmt date to minutes
var localNow = new Date().getTimezoneOffset(); // get the timezone
// offset in minutes
var localTime = min - localNow; // get the local time
var dateStr = new Date(localTime * 1000 * 60);
// dateStr = dateStr.toISOString("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"); // this will return as just the server date format i.e., yyyy-MM-dd'T'HH:mm:ss.SSS'Z'
dateStr = dateStr.toString("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
return dateStr;
}
Very simple answer to this use this: \d*
From C# 2.0:
private void Example(int? arg1, int? arg2)
{
if(arg1 == null)
{
//do something
}
if(arg2 == null)
{
//do something else
}
}