You can use Create USer to create a user
CREATE LOGIN sam
WITH PASSWORD = '340$Uuxwp7Mcxo7Khy';
USE AdventureWorks;
CREATE USER sam FOR LOGIN sam;
GO
and to Grant (Read-only access) you can use the following
GRANT SELECT TO sam
Hope that helps.
That message isn't actually an error - it's just a warning that the file in question isn't of the right architecture (e.g. 32-bit vs 64-bit, wrong CPU architecture). The linker will keep looking for a library of the right type.
Of course, if you're also getting an error along the lines of can't find lPI-Http
then you have a problem :-)
It's hard to suggest what the exact remedy will be without knowing the details of your build system and makefiles, but here are a couple of shots in the dark:
CFLAGS
rather than
CTAGS
- are you sure this is
correct? (What you have may be correct - this will depend on your build system!)LDFLAGS
If that doesn't help - can you post the full error output, plus the actual command (e.g. gcc foo.c -m32 -Dxxx
etc) that was being executed?
The following used to work before the Oracle Java license changes in early 2019.
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
The PPA is discontinued, until the author finds a workaround for the license issues.
I wrote ublame
python tool that returns a naive history of a file commits that impacted a given search term, you'll find more information on the þroject page.
In Bootstrap version 4. There some inbuilt classes to position text.
For centering table header and data text:
<table>
<tr>
<th class="text-center">Text align center.</th>
</tr>
<tr>
<td class="text-center">Text align center.</td>
</tr>
</table>
You can also use this classes to position any text.
<p class="text-left">Left aligned text on all viewport sizes.</p>
<p class="text-center">Center aligned text on all viewport sizes.</p>
<p class="text-right">Right aligned text on all viewport sizes.</p>
<p class="text-sm-left">Left aligned text on viewports sized SM (small) or wider.</p>
<p class="text-md-left">Left aligned text on viewports sized MD (medium) or wider.</p>
<p class="text-lg-left">Left aligned text on viewports sized LG (large) or wider.</p>
<p class="text-xl-left">Left aligned text on viewports sized XL (extra-large) or wider</p>
Hope it's help you.
Just reorder or make sure, the (DOM or HTML) is loaded before the JavaScript.
You probably want egrep. Try:
egrep '^[d-]rwx.*[0-9]$' usrLog.txt
As of June 2019, if your user's are on iOS 13 the cellular download limit has been lifted. User's just get a warning now. Read here
In case the article is removed here are screen shots of it below
You can do it like this:
declare @results varchar(500)
select @results = coalesce(@results + ',', '') + convert(varchar(12),col)
from t
order by col
select @results as results
| RESULTS |
-----------
| 1,3,5,9 |
Using https://github.com/FluentDateTime/FluentDateTime
DateTime dateTime = DateTime.Now;
DateTime combined = dateTime + 36.Hours();
Console.WriteLine(combined);
If you're going to be adding to this dictionary frequently you'd want to take a class based approach, something similar to @Latty's answer in this SO question 2d-dictionary-with-many-keys-that-will-return-the-same-value.
However, if you have a static dictionary, and you need only access values by multiple keys then you could just go the very simple route of using two dictionaries. One to store the alias key association and one to store your actual data:
alias = {
'a': 'id1',
'b': 'id1',
'c': 'id2',
'd': 'id2'
}
dictionary = {
'id1': 1,
'id2': 2
}
dictionary[alias['a']]
If you need to add to the dictionary you could write a function like this for using both dictionaries:
def add(key, id, value=None)
if id in dictionary:
if key in alias:
# Do nothing
pass
else:
alias[key] = id
else:
dictionary[id] = value
alias[key] = id
add('e', 'id2')
add('f', 'id3', 3)
While this works, I think ultimately if you want to do something like this writing your own data structure is probably the way to go, though it could use a similar structure.
One possible solution I have tried right now is: (Make sure do it in general way using for, while with index)
>>> l=['Facebook;Google+;MySpace', 'Apple;Android']
>>> new1 = l[0].split(';')
>>> new1
['Facebook', 'Google+', 'MySpace']
>>> new2= l[1].split(';')`enter code here`
>>> new2
['Apple', 'Android']
>>> totalnew = new1 + new2
>>> totalnew
['Facebook', 'Google+', 'MySpace', 'Apple', 'Android']
SELECT
[oj].[name] [TableName],
[ac].[name] [ColumnName],
[dc].[name] [DefaultConstraintName],
[dc].[definition]
FROM
sys.default_constraints [dc],
sys.all_objects [oj],
sys.all_columns [ac]
WHERE
(
([oj].[type] IN ('u')) AND
([oj].[object_id] = [dc].[parent_object_id]) AND
([oj].[object_id] = [ac].[object_id]) AND
([dc].[parent_column_id] = [ac].[column_id])
)
Your code works. If you don't have any output, you may have "forgotten" to add some values to the list:
// add values
list.add("one");
list.add("two");
// your code
for (String object: list) {
System.out.println(object);
}
interface:
In general, an interface exposes a contract without exposing the underlying implementation details. In Object Oriented Programming, interfaces define abstract types that expose behavior, but contain no logic. Implementation is defined by the class or type that implements the interface.
@interface : (Annotation type)
Take the below example, which has a lot of comments:
public class Generation3List extends Generation2List {
// Author: John Doe
// Date: 3/17/2002
// Current revision: 6
// Last modified: 4/12/2004
// By: Jane Doe
// Reviewers: Alice, Bill, Cindy
// class code goes here
}
Instead of this, you can declare an annotation type
@interface ClassPreamble {
String author();
String date();
int currentRevision() default 1;
String lastModified() default "N/A";
String lastModifiedBy() default "N/A";
// Note use of array
String[] reviewers();
}
which can then annotate a class as follows:
@ClassPreamble (
author = "John Doe",
date = "3/17/2002",
currentRevision = 6,
lastModified = "4/12/2004",
lastModifiedBy = "Jane Doe",
// Note array notation
reviewers = {"Alice", "Bob", "Cindy"}
)
public class Generation3List extends Generation2List {
// class code goes here
}
PS: Many annotations replace comments in code.
Reference: http://docs.oracle.com/javase/tutorial/java/annotations/declaring.html
I know this is a bit old but I think there might be a much simpler solution that requires no additional coding:
Instead of transposing, redimming and transposing again, and if we talk about a two dimensional array, why not just store the values transposed to begin with. In that case redim preserve actually increases the right (second) dimension from the start. Or in other words, to visualise it, why not store in two rows instead of two columns if only the nr of columns can be increased with redim preserve.
the indexes would than be 00-01, 01-11, 02-12, 03-13, 04-14, 05-15 ... 0 25-1 25 etcetera instead of 00-01, 10-11, 20-21, 30-31, 40-41 etcetera.
As long as there is only one dimension that needs to be redimmed-preserved the approach would still work: just put that dimension last.
As only the second (or last) dimension can be preserved while redimming, one could maybe argue that this is how arrays are supposed to be used to begin with. I have not seen this solution anywhere so maybe I'm overlooking something?
(Posted earlier on similar question regarding two dimensions, extended answer here for more dimensions)
Here is some modifications of the above Ryan Artecona's solution.
function myGetPxStyle(e,p)
{
var r=window.getComputedStyle?window.getComputedStyle(e,null)[p]:"";
return parseFloat(r);
}
function myGetClick=function(ev)
{
// {x:ev.layerX,y:ev.layerY} doesn't work when zooming with mac chrome 27
// {x:ev.clientX,y:ev.clientY} not supported by mac firefox 21
// document.body.scrollLeft and document.body.scrollTop seem required when scrolling on iPad
// html is not an offsetParent of body but can have non null offsetX or offsetY (case of wordpress 3.5.1 admin pages for instance)
// html.offsetX and html.offsetY don't work with mac firefox 21
var offsetX=0,offsetY=0,e=this,x,y;
var htmls=document.getElementsByTagName("html"),html=(htmls?htmls[0]:0);
do
{
offsetX+=e.offsetLeft-e.scrollLeft;
offsetY+=e.offsetTop-e.scrollTop;
} while (e=e.offsetParent);
if (html)
{
offsetX+=myGetPxStyle(html,"marginLeft");
offsetY+=myGetPxStyle(html,"marginTop");
}
x=ev.pageX-offsetX-document.body.scrollLeft;
y=ev.pageY-offsetY-document.body.scrollTop;
return {x:x,y:y};
}
You open the file in text mode.
More specifically:
ifile = open('sample.csv', "rt", encoding=<theencodingofthefile>)
Good guesses for encoding is "ascii" and "utf8". You can also leave the encoding off, and it will use the system default encoding, which tends to be UTF8, but may be something else.
You can use the flatten function from Non-standard PHP library (NSPL). It works with arrays and any iterable data structures.
assert([1, 2, 3, 4, 5, 6, 7, 8, 9] === flatten([[1, [2, [3]]], [[[4, 5, 6]]], 7, 8, [9]]));
In Google's closure library project , there is a module which has do the job , below is the API and source code.
open: function () {
var win = $(window);
$(this).parent().css({
position: 'absolute',
left: (win.width() - $(this).parent().outerWidth()) / 2,
top: (win.height() - $(this).parent().outerHeight()) / 2
});
}
If you mean the type of procedure you find in SQL Server, prior to 2010, you can't. If you want a query that accepts a parameter, you can use the query design window:
PARAMETERS SomeParam Text(10);
SELECT Field FROM Table
WHERE OtherField=SomeParam
You can also say:
CREATE PROCEDURE ProcedureName
(Parameter1 datatype, Parameter2 datatype) AS
SQLStatement
From: http://msdn.microsoft.com/en-us/library/aa139977(office.10).aspx#acadvsql_procs
Note that the procedure contains only one statement.
To crop retina images while keeping the same scale and orientation, use the following method in a UIImage category (iOS 4.0 and above):
- (UIImage *)crop:(CGRect)rect {
if (self.scale > 1.0f) {
rect = CGRectMake(rect.origin.x * self.scale,
rect.origin.y * self.scale,
rect.size.width * self.scale,
rect.size.height * self.scale);
}
CGImageRef imageRef = CGImageCreateWithImageInRect(self.CGImage, rect);
UIImage *result = [UIImage imageWithCGImage:imageRef scale:self.scale orientation:self.imageOrientation];
CGImageRelease(imageRef);
return result;
}
I ran into the same error, when I just forgot to declare my custom component in my NgModule
- check there, if the others solutions won't work for you.
There are many ways to print that.
Let's have a look with another example.
a = 10
b = 20
c = a + b
#Normal string concatenation
print("sum of", a , "and" , b , "is" , c)
#convert variable into str
print("sum of " + str(a) + " and " + str(b) + " is " + str(c))
# if you want to print in tuple way
print("Sum of %s and %s is %s: " %(a,b,c))
#New style string formatting
print("sum of {} and {} is {}".format(a,b,c))
#in case you want to use repr()
print("sum of " + repr(a) + " and " + repr(b) + " is " + repr(c))
EDIT :
#New f-string formatting from Python 3.6:
print(f'Sum of {a} and {b} is {c}')
I had a similar error, which was fixed by adding:
Options FollowSymLinks
... in the apps/[app-name]/conf/httpd-app.conf
file. This is because, in my case, an .htaccess
file wants to use rewrite rules, that are not allowed with FollowSymLinks AND SymLinksIfOwnerMatch turned off.
If your conf file already has a line with Options ...
, you can just add FollowSymLinks
to the list of options. You could end up with something like this:
Options Indexes MultiViews FollowSymLinks
this is demo code but it will help
<!DOCTYPE html>
<html>
<head>
<title>APITABLE 3</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$.ajax({
type: "GET",
url: "https://reqres.in/api/users/",
data: '$format=json',
dataType: 'json',
success: function (data) {
$.each(data.data,function(d,results){
console.log(data);
$("#apiData").append(
"<tr>"
+"<td>"+results.first_name+"</td>"
+"<td>"+results.last_name+"</td>"
+"<td>"+results.id+"</td>"
+"<td>"+results.email+"</td>"
+"<td>"+results.bentrust+"</td>"
+"</tr>" )
})
}
});
});
</script>
</head>
<body>
<table id="apiTable">
<thead>
<tr>
<th>Id</th>
<br>
<th>Email</th>
<br>
<th>Firstname</th>
<br>
<th>Lastname</th>
</tr>
</thead>
<tbody id="apiData"></tbody>
</body>
</html>
Using flexbox:
HTML:
<div class="wrapper">
<img src="pikachu.gif"/>
</div>
CSS:
.wrapper {
height: 300px;
width: 300px;
display: flex;
align-items: flex-end;
}
As requested in some comments on another answer, the image can also be horizontally centred with justify-content: center;
try like this (no pun intended btw)
script {
try {
sh 'do your stuff'
} catch (Exception e) {
echo 'Exception occurred: ' + e.toString()
sh 'Handle the exception!'
}
}
The key is to put try...catch in a script block in declarative pipeline syntax. Then it will work. This might be useful if you want to say continue pipeline execution despite failure (eg: test failed, still you need reports..)
Do you merely want to print the string that way, or do you want that to be the internal representation of the string? If the latter, create it as a raw string by prefixing it with r
: r"Hello\tWorld\nHello World"
.
>>> a = r"Hello\tWorld\nHello World"
>>> a # in the interpreter, this calls repr()
'Hello\\tWorld\\nHello World'
>>> print a
Hello\tWorld\nHello World
Also, \s
is not an escape character, except in regular expressions, and then it still has a much different meaning than what you're using it for.
I has similar problem in context of Stripe:
Error: Stripe no longer supports API requests made with TLS 1.0. Please initiate HTTPS connections with TLS 1.2 or later. You can learn more about this at https://stripe.com/blog/upgrading-tls.
Forcing TLS 1.2 using CURL parameter is temporary solution or even it can't be applied because of lack of room to place an update. By default TLS test function https://gist.github.com/olivierbellone/9f93efe9bd68de33e9b3a3afbd3835cf showed following configuration:
SSL version: NSS/3.21 Basic ECC
SSL version number: 0
OPENSSL_VERSION_NUMBER: 1000105f
TLS test (default): TLS 1.0
TLS test (TLS_v1): TLS 1.2
TLS test (TLS_v1_2): TLS 1.2
I updated libraries using following command:
yum update nss curl openssl
and then saw this:
SSL version: NSS/3.21 Basic ECC
SSL version number: 0
OPENSSL_VERSION_NUMBER: 1000105f
TLS test (default): TLS 1.2
TLS test (TLS_v1): TLS 1.2
TLS test (TLS_v1_2): TLS 1.2
Please notice that default TLS version changed to 1.2! That globally solved problem. This will help PayPal users too: https://www.paypal.com/au/webapps/mpp/tls-http-upgrade (update before end of June 2017)
The compileSdkVersion
should be newest stable version.
The targetSdkVersion
should be fully tested and less or equal to compileSdkVersion
.
Probably not exactly your issue..
Do you have any spaces in your package path? You should wrap it up in double quotes to be safe, otherwise it can be taken as two separate arguments
sudo installer -store -pkg "/User/MyName/Desktop/helloWorld.pkg" -target /
Does someone know how I can use a String constant or String[] constant to supply value to an annotation?
Unfortunately, you can't do this with arrays. With non-array variables, the value must be final static.
You need to set the text after the replace call:
$('.element span').each(function() {_x000D_
console.log($(this).text());_x000D_
var text = $(this).text().replace('N/A, ', '');_x000D_
$(this).text(text);_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div class="element">_x000D_
<span>N/A, Category</span>_x000D_
</div>
_x000D_
Here's another cool way you can do it (hat tip @Felix King):
$(".element span").text(function(index, text) {
return text.replace("N/A, ", "");
});
SELECT
hat,
shoe,
boat,
0 as placeholder
FROM
objects
And '' as placeholder
for strings.
Alternatively, consider using a document databases (such as MongoDB) which natively support rich data structures and nesting.
Here is a quick and dirty version that works on Oracle :
select sum(case a when null then 1 else 0) "Null values",
sum(case a when null then 0 else 1) "Non-null values"
from us
Go to control panel, uninstall the java related stuff(close eclipse if opened), then re-install java and open eclipse, clean projects.
Generating a single random number in a program is problematic. Random number generators are only "random" in the sense that repeated invocations produce numbers from a given probability distribution.
Seeding the RNG won't help, especially if you just seed it from a low-resolution timer. You'll just get numbers that are a hash function of the time, and if you call the program often, they may not change often. You might improve a little bit by using srand(time(NULL) + getpid())
(_getpid()
on Windows), but that still won't be random.
The ONLY way to get numbers that are random across multiple invocations of a program is to get them from outside the program. That means using a system service such as /dev/random
(Linux) or CryptGenRandom()
(Windows), or from a service like random.org
.
If you want to be case-insensitive, you can just do:
b = True if bool_str.lower() == 'true' else False
Example usage:
>>> bool_str = 'False'
>>> b = True if bool_str.lower() == 'true' else False
>>> b
False
>>> bool_str = 'true'
>>> b = True if bool_str.lower() == 'true' else False
>>> b
True
import UIKit
extension UITableView {
func scrollToBottom(animated: Bool) {
let y = contentSize.height - frame.size.height
if y < 0 { return }
setContentOffset(CGPoint(x: 0, y: y), animated: animated)
}
}
tableView.scrollToBottom(animated: true)
Do not forget to paste solution code!
import UIKit
class ViewController: UIViewController {
private weak var tableView: UITableView?
private lazy var cellReuseIdentifier = "CellReuseIdentifier"
override func viewDidLoad() {
super.viewDidLoad()
let tableView = UITableView(frame: view.frame)
view.addSubview(tableView)
tableView.register(UITableViewCell.self, forCellReuseIdentifier: cellReuseIdentifier)
self.tableView = tableView
tableView.dataSource = self
tableView.performBatchUpdates(nil) { [weak self] result in
if result { self?.tableView?.scrollToBottom(animated: true) }
}
}
}
extension ViewController: UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 100
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier, for: indexPath )
cell.textLabel?.text = "\(indexPath)"
return cell
}
}
Numpy is required by pandas (and by virtually all numerical tools for Python). Scipy is not strictly required for pandas but is listed as an "optional dependency". I wouldn't say that pandas is an alternative to Numpy and/or Scipy. Rather, it's an extra tool that provides a more streamlined way of working with numerical and tabular data in Python. You can use pandas data structures but freely draw on Numpy and Scipy functions to manipulate them.
Theres a setting max_input_time
(on Apache) for many webservers that defines how long they will wait for post data, regardless of the size. If this time runs out the connection is closed without even touching the php.
So your problem is not necessarily solvable with php only but you will need to change the server settings too.
If you only specify either the height or the width, but not both, most browsers will honor the aspect ratio.
Because you are working with an ASP.NET server control, you may consider executing logic on the server side prior to rendering to decide which (height or width) attribute you want to specify; that is, if you want a fixed height under one condition or a fixed width under another.
For posterity, your question was how to send an http request to https://stackoverflow.com/questions
. The real answer is: you cannot with telnet, cause this is an https-only reachable url.
So, you might want to use openssl
instead of telnet
, like this for instance
$ openssl s_client -connect stackoverflow.com:443
...
---
GET /questions HTTP/1.1
Host: stackoverflow.com
This will give you the https response.
Here is my small contribution. A method to replace within the same string without creating new strings or stringbuilders. It's fast, easy to understand and a good alternative to all mentions in this post.
private static HashSet<char> _invalidCharsHash;
private static HashSet<char> InvalidCharsHash
{
get { return _invalidCharsHash ?? (_invalidCharsHash = new HashSet<char>(Path.GetInvalidFileNameChars())); }
}
private static string ReplaceInvalidChars(string fileName, string newValue)
{
char newChar = newValue[0];
char[] chars = fileName.ToCharArray();
for (int i = 0; i < chars.Length; i++)
{
char c = chars[i];
if (InvalidCharsHash.Contains(c))
chars[i] = newChar;
}
return new string(chars);
}
You can call it like this:
string illegal = "\"M<>\"\\a/ry/ h**ad:>> a\\/:*?\"<>| li*tt|le|| la\"mb.?";
string legal = ReplaceInvalidChars(illegal);
and returns:
_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
It's worth to note that this method will always replace invalid chars with a given value, but will not remove them. If you want to remove invalid chars, this alternative will do the trick:
private static string RemoveInvalidChars(string fileName, string newValue)
{
char newChar = string.IsNullOrEmpty(newValue) ? char.MinValue : newValue[0];
bool remove = newChar == char.MinValue;
char[] chars = fileName.ToCharArray();
char[] newChars = new char[chars.Length];
int i2 = 0;
for (int i = 0; i < chars.Length; i++)
{
char c = chars[i];
if (InvalidCharsHash.Contains(c))
{
if (!remove)
newChars[i2++] = newChar;
}
else
newChars[i2++] = c;
}
return new string(newChars, 0, i2);
}
BENCHMARK
I executed timed test runs with most methods found in this post, if performance is what you are after. Some of these methods don't replace with a given char, since OP was asking to clean the string. I added tests replacing with a given char, and some others replacing with an empty char if your intended scenario only needs to remove the unwanted chars. Code used for this benchmark is at the end, so you can run your own tests.
Note: Methods Test1
and Test2
are both proposed in this post.
First Run
replacing with '_', 1000000 iterations
Results:
============Test1===============
Elapsed=00:00:01.6665595
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test2===============
Elapsed=00:00:01.7526835
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test3===============
Elapsed=00:00:05.2306227
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test4===============
Elapsed=00:00:14.8203696
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test5===============
Elapsed=00:00:01.8273760
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test6===============
Elapsed=00:00:05.4249985
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test7===============
Elapsed=00:00:07.5653833
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test8===============
Elapsed=00:12:23.1410106
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test9===============
Elapsed=00:00:02.1016708
Result=_M ____a_ry_ h__ad___ a_________ li_tt_le__ la_mb._
============Test10===============
Elapsed=00:00:05.0987225
Result=M ary had a little lamb.
============Test11===============
Elapsed=00:00:06.8004289
Result=M ary had a little lamb.
Second Run
removing invalid chars, 1000000 iterations
Note: Test1 will not remove, only replace.
Results:
============Test1===============
Elapsed=00:00:01.6945352
Result= M a ry h ad a li tt le la mb.
============Test2===============
Elapsed=00:00:01.4798049
Result=M ary had a little lamb.
============Test3===============
Elapsed=00:00:04.0415688
Result=M ary had a little lamb.
============Test4===============
Elapsed=00:00:14.3397960
Result=M ary had a little lamb.
============Test5===============
Elapsed=00:00:01.6782505
Result=M ary had a little lamb.
============Test6===============
Elapsed=00:00:04.9251707
Result=M ary had a little lamb.
============Test7===============
Elapsed=00:00:07.9562379
Result=M ary had a little lamb.
============Test8===============
Elapsed=00:12:16.2918943
Result=M ary had a little lamb.
============Test9===============
Elapsed=00:00:02.0770277
Result=M ary had a little lamb.
============Test10===============
Elapsed=00:00:05.2721232
Result=M ary had a little lamb.
============Test11===============
Elapsed=00:00:05.2802903
Result=M ary had a little lamb.
BENCHMARK RESULTS
Methods Test1
, Test2
and Test5
are the fastest. Method Test8
is the slowest.
CODE
Here's the complete code of the benchmark:
private static HashSet<char> _invalidCharsHash;
private static HashSet<char> InvalidCharsHash
{
get { return _invalidCharsHash ?? (_invalidCharsHash = new HashSet<char>(Path.GetInvalidFileNameChars())); }
}
private static string _invalidCharsValue;
private static string InvalidCharsValue
{
get { return _invalidCharsValue ?? (_invalidCharsValue = new string(Path.GetInvalidFileNameChars())); }
}
private static char[] _invalidChars;
private static char[] InvalidChars
{
get { return _invalidChars ?? (_invalidChars = Path.GetInvalidFileNameChars()); }
}
static void Main(string[] args)
{
string testPath = "\"M <>\"\\a/ry/ h**ad:>> a\\/:*?\"<>| li*tt|le|| la\"mb.?";
int max = 1000000;
string newValue = "";
TimeBenchmark(max, Test1, testPath, newValue);
TimeBenchmark(max, Test2, testPath, newValue);
TimeBenchmark(max, Test3, testPath, newValue);
TimeBenchmark(max, Test4, testPath, newValue);
TimeBenchmark(max, Test5, testPath, newValue);
TimeBenchmark(max, Test6, testPath, newValue);
TimeBenchmark(max, Test7, testPath, newValue);
TimeBenchmark(max, Test8, testPath, newValue);
TimeBenchmark(max, Test9, testPath, newValue);
TimeBenchmark(max, Test10, testPath, newValue);
TimeBenchmark(max, Test11, testPath, newValue);
Console.Read();
}
private static void TimeBenchmark(int maxLoop, Func<string, string, string> func, string testString, string newValue)
{
var sw = new Stopwatch();
sw.Start();
string result = string.Empty;
for (int i = 0; i < maxLoop; i++)
result = func?.Invoke(testString, newValue);
sw.Stop();
Console.WriteLine($"============{func.Method.Name}===============");
Console.WriteLine("Elapsed={0}", sw.Elapsed);
Console.WriteLine("Result={0}", result);
Console.WriteLine("");
}
private static string Test1(string fileName, string newValue)
{
char newChar = string.IsNullOrEmpty(newValue) ? char.MinValue : newValue[0];
char[] chars = fileName.ToCharArray();
for (int i = 0; i < chars.Length; i++)
{
if (InvalidCharsHash.Contains(chars[i]))
chars[i] = newChar;
}
return new string(chars);
}
private static string Test2(string fileName, string newValue)
{
char newChar = string.IsNullOrEmpty(newValue) ? char.MinValue : newValue[0];
bool remove = newChar == char.MinValue;
char[] chars = fileName.ToCharArray();
char[] newChars = new char[chars.Length];
int i2 = 0;
for (int i = 0; i < chars.Length; i++)
{
char c = chars[i];
if (InvalidCharsHash.Contains(c))
{
if (!remove)
newChars[i2++] = newChar;
}
else
newChars[i2++] = c;
}
return new string(newChars, 0, i2);
}
private static string Test3(string filename, string newValue)
{
foreach (char c in InvalidCharsValue)
{
filename = filename.Replace(c.ToString(), newValue);
}
return filename;
}
private static string Test4(string filename, string newValue)
{
Regex r = new Regex(string.Format("[{0}]", Regex.Escape(InvalidCharsValue)));
filename = r.Replace(filename, newValue);
return filename;
}
private static string Test5(string filename, string newValue)
{
return string.Join(newValue, filename.Split(InvalidChars));
}
private static string Test6(string fileName, string newValue)
{
return InvalidChars.Aggregate(fileName, (current, c) => current.Replace(c.ToString(), newValue));
}
private static string Test7(string fileName, string newValue)
{
string regex = string.Format("[{0}]", Regex.Escape(InvalidCharsValue));
return Regex.Replace(fileName, regex, newValue, RegexOptions.Compiled);
}
private static string Test8(string fileName, string newValue)
{
string regex = string.Format("[{0}]", Regex.Escape(InvalidCharsValue));
Regex removeInvalidChars = new Regex(regex, RegexOptions.Singleline | RegexOptions.Compiled | RegexOptions.CultureInvariant);
return removeInvalidChars.Replace(fileName, newValue);
}
private static string Test9(string fileName, string newValue)
{
StringBuilder sb = new StringBuilder(fileName.Length);
bool changed = false;
for (int i = 0; i < fileName.Length; i++)
{
char c = fileName[i];
if (InvalidCharsHash.Contains(c))
{
changed = true;
sb.Append(newValue);
}
else
sb.Append(c);
}
if (sb.Length == 0)
return newValue;
return changed ? sb.ToString() : fileName;
}
private static string Test10(string fileName, string newValue)
{
if (!fileName.Any(c => InvalidChars.Contains(c)))
{
return fileName;
}
return new string(fileName.Where(c => !InvalidChars.Contains(c)).ToArray());
}
private static string Test11(string fileName, string newValue)
{
string invalidCharsRemoved = new string(fileName
.Where(x => !InvalidChars.Contains(x))
.ToArray());
return invalidCharsRemoved;
}
Drupal initially relied on the <base>
tag, and later on took the decision to not use due to problems with HTTP crawlers & caches.
I generally don't like to post links. But this one is really worth sharing as it could benefit those looking for the details of a real-world experience with the <base>
tag:
My program seems to suffer from linear access to dictionaries, its run-time grows exponentially even though the algorithm is quadratic.
I use a dictionary to memoize values. That seems to be a bottleneck.
This is evidence of a bug in your memoization method.
I have made a bash script related to the same to check if the certificate is expired or not. You can use the same if required.
Script
https://github.com/zeeshanjamal16/usefulScripts/blob/master/sslCertificateExpireCheck.sh
ReadMe
https://github.com/zeeshanjamal16/usefulScripts/blob/master/README.md
They are called ifdef or include guards.
If writing a small program it might seems that it is not needed, but as the project grows you could intentionally or unintentionally include one file many times, which can result in compilation warning like variable already declared.
#ifndef checks whether HEADERFILE_H is not declared.
#define will declare HEADERFILE_H once #ifndef generates true.
#endif is to know the scope of #ifndef i.e end of #ifndef
If it is not declared which means #ifndef generates true then only the part between #ifndef and #endif executed otherwise not. This will prevent from again declaring the identifiers, enums, structure, etc...
As of 2.3.0 and up to 3.3.0
MATCH (n)
DETACH DELETE n
Pre 2.3.0
MATCH (n)
OPTIONAL MATCH (n)-[r]-()
DELETE n,r
An easy way to see what a modulus operator looks like on various architectures is to use the Godbolt Compiler Explorer.
to be more robust (tabulation, return…), I define:
function is_not_empty_string($str) {
if (is_string($str) && trim($str, " \t\n\r\0") !== '')
return true;
else
return false;
}
// code to test
$values = array(false, true, null, 'abc', '23', 23, '23.5', 23.5, '', ' ', '0', 0);
foreach ($values as $value) {
var_export($value);
if (is_not_empty_string($value))
print(" is a none empty string!\n");
else
print(" is not a string or is an empty string\n");
}
sources:
I believe you want to find the current region of A1 and surrounding cells - not necessarily all cells on the sheet. If so - simply use... Range("A1").CurrentRegion
change Date to Object which is between parenthesis
In researching Matt's comment, I have revised my original statement. He is correct, there will be a difference in performance between an inline table valued function (ITVF) and a multi-statement table valued function (MSTVF) even if they both simply execute a SELECT statement. SQL Server will treat an ITVF somewhat like a VIEW
in that it will calculate an execution plan using the latest statistics on the tables in question. A MSTVF is equivalent to stuffing the entire contents of your SELECT statement into a table variable and then joining to that. Thus, the compiler cannot use any table statistics on the tables in the MSTVF. So, all things being equal, (which they rarely are), the ITVF will perform better than the MSTVF. In my tests, the performance difference in completion time was negligible however from a statistics standpoint, it was noticeable.
In your case, the two functions are not functionally equivalent. The MSTV function does an extra query each time it is called and, most importantly, filters on the customer id. In a large query, the optimizer would not be able to take advantage of other types of joins as it would need to call the function for each customerId passed. However, if you re-wrote your MSTV function like so:
CREATE FUNCTION MyNS.GetLastShipped()
RETURNS @CustomerOrder TABLE
(
SaleOrderID INT NOT NULL,
CustomerID INT NOT NULL,
OrderDate DATETIME NOT NULL,
OrderQty INT NOT NULL
)
AS
BEGIN
INSERT @CustomerOrder
SELECT a.SalesOrderID, a.CustomerID, a.OrderDate, b.OrderQty
FROM Sales.SalesOrderHeader a
INNER JOIN Sales.SalesOrderHeader b
ON a.SalesOrderID = b.SalesOrderID
INNER JOIN Production.Product c
ON b.ProductID = c.ProductID
WHERE a.OrderDate = (
Select Max(SH1.OrderDate)
FROM Sales.SalesOrderHeader As SH1
WHERE SH1.CustomerID = A.CustomerId
)
RETURN
END
GO
In a query, the optimizer would be able to call that function once and build a better execution plan but it still would not be better than an equivalent, non-parameterized ITVS or a VIEW
.
ITVFs should be preferred over a MSTVFs when feasible because the datatypes, nullability and collation from the columns in the table whereas you declare those properties in a multi-statement table valued function and, importantly, you will get better execution plans from the ITVF. In my experience, I have not found many circumstances where an ITVF was a better option than a VIEW but mileage may vary.
Thanks to Matt.
Addition
Since I saw this come up recently, here is an excellent analysis done by Wayne Sheffield comparing the performance difference between Inline Table Valued functions and Multi-Statement functions.
It's not consistent across vendors - Oracle, MySQL, and DB2 support dual:
SELECT 'Hello world'
FROM DUAL
...while SQL Server, PostgreSQL, and SQLite don't require the FROM DUAL
:
SELECT 'Hello world'
MySQL does support both ways.
it's should overlap, so it turned off. Try to open in your text editor and find display_errors
and turn it on. It works for me
There's a simple command built-in that will pull it:
rvm implode
This will remove the rvm/
directory and all the rubies built within it. In order to remove the final trace of rvm, you need to remove the rvm gem, too:
gem uninstall rvm
If you've made modifications to your PATH
you might want to pull those, too. Check your .bashrc
, .profile
and .bash_profile
files, among other things.
You may also have an /etc/rvmrc
file, or one in your home directory ~/.rvmrc
that may need to be removed as well.
This is just example using reflect.DeepEqual() that is given in @VictorDeryagin's answer.
package main
import (
"fmt"
"reflect"
)
func main() {
a := []int {4,5,6}
b := []int {4,5,6}
c := []int {4,5,6,7}
fmt.Println(reflect.DeepEqual(a, b))
fmt.Println(reflect.DeepEqual(a, c))
}
Result:
true
false
Try it in Go Playground
If the directory is passed as a relative path and you will need to convert it to an absolute path before calling find. In the following example, the directory is passed as the first parameter to the script:
#!/bin/bash
# get absolute path
directory=`cd $1; pwd`
# print out list of files and directories
find $directory
The CSS below stops users from being able to select text.
-webkit-user-select: none; /* Safari */
-moz-user-select: none; /* Firefox */
-ms-user-select: none; /* IE10+/Edge */
user-select: none; /* Standard */
To target IE9 downwards the html attribute unselectable
must be used instead:
<p unselectable="on">Test Text</p>
another solution using dplyr is:
df <- ## your data ##
df <- df %>%
mutate(Den = ifelse(any(is.na(Den)) | any(Den != 1), 0, 1))
More explicitly:
To replace the semi colon character (;) with a newline, follow these exact steps.
Bit more to it than the original explanation says.
I want to create a kind of stopwatch that when minutes reach 20 minutes, brings up a dialog box.
All you need is to sleep the specified time. time.sleep() takes seconds to sleep, so 20 * 60 is 20 minutes.
import time
run = raw_input("Start? > ")
time.sleep(20 * 60)
your_code_to_bring_up_dialog_box()
Whenever I need to get a class from a list of classes or a part of a class name or id, I always use split() then either get it specifically with the array index or, most often in my case, pop() to get the last element or shift() to get the first.
This example gets the div's classes "gallery_148 ui-sortable" and returns the gallery id 148.
var galleryClass = $(this).parent().prop("class"); // = gallery_148 ui-sortable
var galleryID = galleryClass.split(" ").shift(); // = gallery_148
galleryID = galleryID.split("_").pop(); // = 148
//or
galleryID = galleryID.substring(8); // = 148 also, but less versatile
I'm sure it could be compacted into less lines but I left it expanded for readability.
You need to use the requireGestureRecognizerToFail: method. Something like this:
[singleTapRecognizer requireGestureRecognizerToFail:doubleTapRecognizer];
I became stuck on this issue having executed brew services stop postgresql
the day prior.
The day following: brew services start postgresql
would not work. This is because as is shown when you install using homebrew. postgresql uses a launchd ... which loads when your computer is powered on.
resolution:brew services start postgresql
Restart your computer.
If you are using System.Net.Http.HttpClient
I believe correct pattern is
var handler = new HttpClientHandler()
{
ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator
};
var http = new HttpClient(handler);
var res = http.GetAsync(url);
Since none of the other answers worked for me I did it using this hack:
$ cd /yourfolder
svn co https://path-to-folder-which-has-your-files/ --depth files
This will create a new local folder which has only the files from the remote path. Then you can do a symbolic link to the files you want to have here.
I faced the same error posted by OP while trying to debug my ASP.NET website using IIS Express server. IIS Express is used by Visual Studio to run the website when we press F5.
Open solution explorer in Visual Studio -> Expand the web application project node (StudentInfo
in my case) -> Right click on the web page which you want to get loaded when your website starts(StudentPortal.aspx
in my case) -> Select Set as Start Page
option from the context menu as shown below. It started to work from the next run.
Root cause: I concluded that the start page which is the default document for the website wasn't set correctly or had got messed up somehow during development.
I usually go with varchar(255) (255 being the maximum length of a varchar type in MySQL).
Use the MutationObserver interface as shown in Gabriele Romanato's blog
Chrome 18+, Firefox 14+, IE 11+, Safari 6+
// The node to be monitored
var target = $( "#content" )[0];
// Create an observer instance
var observer = new MutationObserver(function( mutations ) {
mutations.forEach(function( mutation ) {
var newNodes = mutation.addedNodes; // DOM NodeList
if( newNodes !== null ) { // If there are new nodes added
var $nodes = $( newNodes ); // jQuery set
$nodes.each(function() {
var $node = $( this );
if( $node.hasClass( "message" ) ) {
// do something
}
});
}
});
});
// Configuration of the observer:
var config = {
attributes: true,
childList: true,
characterData: true
};
// Pass in the target node, as well as the observer options
observer.observe(target, config);
// Later, you can stop observing
observer.disconnect();
for complete this script , the function for draw circle ,
function drawCircle(coordon)
{
var coord = coordon.split(',');
var c = document.getElementById("myCanvas");
var hdc = c.getContext("2d");
hdc.beginPath();
hdc.arc(coord[0], coord[1], coord[2], 0, 2 * Math.PI);
hdc.stroke();
}
Scikit-learn is a machine learning library for Python which can do this job for you. Just import sklearn.linear_model module into your script.
Find the code template for Multiple Linear Regression using sklearn in Python:
import numpy as np
import matplotlib.pyplot as plt #to plot visualizations
import pandas as pd
# Importing the dataset
df = pd.read_csv(<Your-dataset-path>)
# Assigning feature and target variables
X = df.iloc[:,:-1]
y = df.iloc[:,-1]
# Use label encoders, if you have any categorical variable
from sklearn.preprocessing import LabelEncoder
labelencoder = LabelEncoder()
X['<column-name>'] = labelencoder.fit_transform(X['<column-name>'])
from sklearn.preprocessing import OneHotEncoder
onehotencoder = OneHotEncoder(categorical_features = ['<index-value>'])
X = onehotencoder.fit_transform(X).toarray()
# Avoiding the dummy variable trap
X = X[:,1:] # Usually done by the algorithm itself
#Spliting the data into test and train set
from sklearn.model_selection import train_test_split
X_train, X_test, y_train, y_test = train_test_split(X,y, random_state = 0, test_size = 0.2)
# Fitting the model
from sklearn.linear_model import LinearRegression
regressor = LinearRegression()
regressor.fit(X_train, y_train)
# Predicting the test set results
y_pred = regressor.predict(X_test)
That's it. You can use this code as a template for implementing Multiple Linear Regression in any dataset. For a better understanding with an example, Visit: Linear Regression with an example
Starting from Java 7:
Define a path and the String containing the line separator at the beginning:
Path p = Paths.get("C:\\Users\\first.last\\test.txt");
String s = System.lineSeparator() + "New Line!";
and then you can use one of the following approaches:
Using Files.write
(small files):
try {
Files.write(p, s.getBytes(), StandardOpenOption.APPEND);
} catch (IOException e) {
System.err.println(e);
}
Using Files.newBufferedWriter
(text files):
try (BufferedWriter writer = Files.newBufferedWriter(p, StandardOpenOption.APPEND)) {
writer.write(s);
} catch (IOException ioe) {
System.err.format("IOException: %s%n", ioe);
}
Using Files.newOutputStream
(interoperable with java.io
APIs):
try (OutputStream out = new BufferedOutputStream(Files.newOutputStream(p, StandardOpenOption.APPEND))) {
out.write(s.getBytes());
} catch (IOException e) {
System.err.println(e);
}
Using Files.newByteChannel
(random access files):
try (SeekableByteChannel sbc = Files.newByteChannel(p, StandardOpenOption.APPEND)) {
sbc.write(ByteBuffer.wrap(s.getBytes()));
} catch (IOException e) {
System.err.println(e);
}
Using FileChannel.open
(random access files):
try (FileChannel sbc = FileChannel.open(p, StandardOpenOption.APPEND)) {
sbc.write(ByteBuffer.wrap(s.getBytes()));
} catch (IOException e) {
System.err.println(e);
}
Details about these methods can be found in the Oracle's tutorial.
Speaking with regard to the spec (http://www.w3.org/TR/CSS2/zindex.html), since a.someSelector
is positioned it creates a new stacking context that its children can't break out of. Leave a.someSelector
unpositioned and then child a.someSelector:after
may be positioned in the same context as a.someSelector
.
sum(Santa$Believe)
$value = preg_replace('~\.0+$~','',$value);
The old fashion emacs bindings can still work in iterm2 and os x terminal:
Preferences -> Profiles -> Keys (sub tab in profiles)
Left/Right option <kbd>?</kbd> key acts as +Esc
(similar in os x terminal)This should enable alt-f and alt-b for moving words by words. (Still ctrl-a and ctrl-e always work as usual)
If set as meta
those old bindings will work while some iterm2 bindings unavailable.
You can use pigz instead of gzip, which does gzip compression on multiple cores. Instead of using the -z option, you would pipe it through pigz:
tar cf - paths-to-archive | pigz > archive.tar.gz
By default, pigz uses the number of available cores, or eight if it could not query that. You can ask for more with -p n, e.g. -p 32. pigz has the same options as gzip, so you can request better compression with -9. E.g.
tar cf - paths-to-archive | pigz -9 -p 32 > archive.tar.gz
object explorer > right-click a table > Script table as > SELECT to > Clipboard
Then you can just paste in the section where you want that as a sub query.
Create you own templates with only a code snippet. Then instead opening the template as a new document just drag it to you current query to insert the snippet.
A snippet can simply be a set of header with comments or just some simple piece of code.
If you wont remember to start a transaction before your delete statemens you can go to options and set implicit transactions by default in all your queries. They require always an explicit commit / rollback.
Go to options and set isolation level to READ_UNCOMMITED by default. This way you dont need to type a NOLOCK in all your ad hoc queries. Just dont forget to place the table hint when writing a new view or stored procedure.
Your login has a default database set by the DBA (To me is usually the undesired one almost every time).
If you want it to be a different one because of the project you are currently working on.
In 'Registered Servers pane' > Right click > Properties > Connection properties tab > connect to database.
(These you might already have done though)
Register the server multiple times, each with a different login. You can then have the same server in the object browser open multiple times (each with a different login).
To execute the same query you already wrote with a different login, instead of copying the query just do a right click over the query pane > Connection > Change connection.
public static BufferedImage rotateCw( BufferedImage img )
{
int width = img.getWidth();
int height = img.getHeight();
BufferedImage newImage = new BufferedImage( height, width, img.getType() );
for( int i=0 ; i < width ; i++ )
for( int j=0 ; j < height ; j++ )
newImage.setRGB( height-1-j, i, img.getRGB(i,j) );
return newImage;
}
from https://coderanch.com/t/485958/java/Rotating-buffered-image
for Ruby 1.9+ use colon.
gem install sinatra:1.4.4 prawn:0.13.0
Here is my technique I'd like to share. Works well so long as your clr property types are sql equivalent types eg. bool -> bit, long -> bigint, string -> nchar/char/varchar/nvarchar, decimal -> money
public void SaveTransaction(Transaction transaction)
{
using (var con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConString"].ConnectionString))
{
using (var cmd = new SqlCommand("spAddTransaction", con))
{
cmd.CommandType = CommandType.StoredProcedure;
foreach (var prop in transaction.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
cmd.Parameters.AddWithValue("@" + prop.Name, prop.GetValue(transaction, null));
con.Open();
cmd.ExecuteNonQuery();
}
}
}
library(purrr)
x <- x %>% keep(is.numeric)
Edit: The bitset stuff below is maybe an interesting read, but the answer itself is a bit dated. Some of this functionality is changing around in 2.x. Also Slawek points out in another answer that the terms
query is an easy way to DRY up the search in this case. Refactored at the end for current best practices. —nz
You'll probably want a Bool Query (or more likely Filter alongside another query), with a should
clause.
The bool query has three main properties: must
, should
, and must_not
. Each of these accepts another query, or array of queries. The clause names are fairly self-explanatory; in your case, the should
clause may specify a list filters, a match against any one of which will return the document you're looking for.
From the docs:
In a boolean query with no
must
clauses, one or moreshould
clauses must match a document. The minimum number of should clauses to match can be set using theminimum_should_match
parameter.
Here's an example of what that Bool query might look like in isolation:
{
"bool": {
"should": [
{ "term": { "tag": "c" }},
{ "term": { "tag": "d" }}
]
}
}
And here's another example of that Bool query as a filter within a more general-purpose Filtered Query:
{
"filtered": {
"query": {
"match": { "title": "hello world" }
},
"filter": {
"bool": {
"should": [
{ "term": { "tag": "c" }},
{ "term": { "tag": "d" }}
]
}
}
}
}
Whether you use Bool as a query (e.g., to influence the score of matches), or as a filter (e.g., to reduce the hits that are then being scored or post-filtered) is subjective, depending on your requirements.
It is generally preferable to use Bool in favor of an Or Filter, unless you have a reason to use And/Or/Not (such reasons do exist). The Elasticsearch blog has more information about the different implementations of each, and good examples of when you might prefer Bool over And/Or/Not, and vice-versa.
Elasticsearch blog: All About Elasticsearch Filter Bitsets
Update with a refactored query...
Now, with all of that out of the way, the terms
query is a DRYer version of all of the above. It does the right thing with respect to the type of query under the hood, it behaves the same as the bool
+ should
using the minimum_should_match
options, and overall is a bit more terse.
Here's that last query refactored a bit:
{
"filtered": {
"query": {
"match": { "title": "hello world" }
},
"filter": {
"terms": {
"tag": [ "c", "d" ],
"minimum_should_match": 1
}
}
}
}
I had this error even though I had everything that the answers above suggested in place. A simple edit in the app.module.ts
file ( like delete a bracket and put it back) did the trick.
You can do this :
<table id="table_header">
<tr>
<td contenteditable="true">a</td>
<td contenteditable="true">b</td>
<td contenteditable="true">c</td>
</tr>
</table>
I'd say the minimum would be to
You could also do:
public static IWebElement FindElementByJs(this IWebDriver driver, string jsCommand)
{
return (IWebElement)((IJavaScriptExecutor)driver).ExecuteScript(jsCommand);
}
public static IWebElement FindElementByJsWithWait(this IWebDriver driver, string jsCommand, int timeoutInSeconds)
{
if (timeoutInSeconds > 0)
{
var wait = new WebDriverWait(driver, TimeSpan.FromSeconds(timeoutInSeconds));
wait.Until(d => d.FindElementByJs(jsCommand));
}
return driver.FindElementByJs(jsCommand);
}
public static IWebElement FindElementByJsWithWait(this IWebDriver driver, string jsCommand)
{
return FindElementByJsWithWait(driver, jsCommand, s_PageWaitSeconds);
}
It overflows, because the number is negative.
Try this and it will work:
int n = (int) Long.parseLong("ffff8000", 16);
While not necessarily the most popular method, I've heard that the ftell, fseek method may not always give accurate results in some circumstances. Specifically, if an already opened file is used and the size needs to be worked out on that and it happens to be opened as a text file, then it's going to give out wrong answers.
The following methods should always work as stat is part of the c runtime library on Windows, Mac and Linux.
long GetFileSize(std::string filename)
{
struct stat stat_buf;
int rc = stat(filename.c_str(), &stat_buf);
return rc == 0 ? stat_buf.st_size : -1;
}
or
long FdGetFileSize(int fd)
{
struct stat stat_buf;
int rc = fstat(fd, &stat_buf);
return rc == 0 ? stat_buf.st_size : -1;
}
On some systems there is also a stat64/fstat64. So if you need this for very large files you may want to look at using those.
class department:
campus_name="attock"
def printer(self):
print(self.campus_name)
class CS_dept(department):
def overr_CS(self):
department.printer(self)
print("i am child class1")
c=CS_dept()
c.overr_CS()
What worked for me was echo $testVar | tr "\n" " "
Where testVar contained my variable/script-output
Your regex only allows exactly 8 characters. Use {8,}
to specify eight or more instead of {8}
.
But why would you limit the allowed character range for your passwords? 8-character alphanumeric passwords can be bruteforced by my phone within minutes.
I know the OP ends his question with reference to the Eclipse plugin, but I arrived here with a search that didn't specify Eclipse. So here goes for Android Studio:
jar
file to libs directory (such as copy/paste)jar
file and select "Add as Library..."That's it!
The targetNamespace
of your XML Schema does not match the namespace of the Root element (dot in Test.Namespace
vs. comma in Test,Namespace
)
Once you make the above agree, you have to consider that your element2
has an attribute order that is not in your XSD.
I also needed a random id, I went with using base64 encoding:
btoa(Math.random()).substring(0,12)
Pick however many characters you want, the result is usually at least 24 characters.
You can use this jsFiddle
And HTML:
<div id="previewBox">
<button id="closeButton">Close</button>
<a class="fragment" href="google.com">
<div>
<img src ="http://placehold.it/116x116" alt="some description"/>
<h3>the title will go here</h3>
<h4> www.myurlwill.com </h4>
<p class="text">
this is a short description yada yada peanuts etc this is a short description yada yada peanuts etc this is a short description yada yada peanuts etc this is a short description yada yada peanuts etcthis is a short description yada yada peanuts etc
</p>
</div>
</a>
</div>
With JS (jquery required):
$(document).ready(function() {
$('#closeButton').on('click', function(e) {
$('#previewBox').remove();
});
});
There is the question whether we want to differentiate between cases:
"phone" : "" = the value is empty
"phone" : null = the value for "phone" was not set yet
If we want differentiate I would use null for this. Otherwise we would need to add a new field like "isAssigned" or so. This is an old Database issue.
It's possible in ggplot and you can use scale_date for this task
library(ggplot2)
Lines <- "Date Visits
11/1/2010 696537
11/2/2010 718748
11/3/2010 799355
11/4/2010 805800
11/5/2010 701262
11/6/2010 531579
11/7/2010 690068
11/8/2010 756947
11/9/2010 718757
11/10/2010 701768
11/11/2010 820113
11/12/2010 645259"
dm <- read.table(textConnection(Lines), header = TRUE)
dm <- mutate(dm, Date = as.Date(dm$Date, "%m/%d/%Y"))
ggplot(data = dm, aes(Date, Visits)) +
geom_line() +
scale_x_date(format = "%b %d", major = "1 day")
If you are ready to opt for CSS3, you can use css3 translate property. Resize based on whatever is bigger. If your height is bigger and width is smaller than container, width will be stretch to 100% and height will be trimmed from both side. Same goes for larger width as well.
Your need, HTML:
<div class="img-wrap">
<img src="http://lorempixel.com/300/160/nature/" />
</div>
<div class="img-wrap">
<img src="http://lorempixel.com/300/200/nature/" />
</div>
<div class="img-wrap">
<img src="http://lorempixel.com/200/300/nature/" />
</div>
And CSS:
.img-wrap {
width: 200px;
height: 150px;
position: relative;
display: inline-block;
overflow: hidden;
margin: 0;
}
div > img {
display: block;
position: absolute;
top: 50%;
left: 50%;
min-height: 100%;
min-width: 100%;
transform: translate(-50%, -50%);
}
Voila! Working: http://jsfiddle.net/shekhardesigner/aYrhG/
DIV is set to the relative
position. This means all the child elements will get the starting coordinates (origins) from where this DIV starts.
The image is set as a BLOCK element, min-width/height
both set to 100% means to resize the image no matter of its size to be the minimum of 100% of it's parent. min
is the key. If by min-height, the image height exceeded the parent's height, no problem. It will look for if min-width and try to set the minimum height to be 100% of parents. Both goes vice-versa. This ensures there are no gaps around the div but image is always bit bigger and gets trimmed by overflow:hidden;
Now image
, this is set to an absolute
position with left:50%
and top:50%
. Means push the image 50% from the top and left making sure the origin is taken from DIV. Left/Top units are measured from the parent.
Magic moment:
transform: translate(-50%, -50%);
Now, this translate
function of CSS3 transform
property moves/repositions an element in question. This property deals with the applied element hence the values (x, y) OR (-50%, -50%) means to move the image negative left by 50% of image size and move to the negative top by 50% of image size.
Eg. if Image size was 200px × 150px, transform:translate(-50%, -50%)
will calculated to translate(-100px, -75px). % unit helps when we have various size of image.
This is just a tricky way to figure out centroid of the image and the parent DIV and match them.
Apologies for taking too long to explain!
Resources to read more:
if re.search(r'pattern', string):
Simple if-test:
if re.search(r'ing\b', "seeking a great perhaps"): # any words end with ing?
print("yes")
Pattern check, extract a substring, case insensitive:
match_object = re.search(r'^OUGHT (.*) BE$', "ought to be", flags=re.IGNORECASE)
if match_object:
assert "to" == match_object.group(1) # what's between ought and be?
Notes:
Use re.search()
not re.match. Match restricts to the start of strings, a confusing convention if you ask me. If you do want a string-starting match, use caret or \A
instead, re.search(r'^...', ...)
Use raw string syntax r'pattern'
for the first parameter. Otherwise you would need to double up backslashes, as in re.search('ing\\b', ...)
In this example, \b
is a special sequence meaning word-boundary in regex. Not to be confused with backspace.
re.search()
returns None
if it doesn't find anything, which is always falsy.
re.search()
returns a Match object if it finds anything, which is always truthy.
a group is what matched inside parentheses
group numbering starts at 1
I found this to be a better solution
$(".alert-dismissible").fadeTo(2000, 500).slideUp(500, function(){
$(".alert-dismissible").alert('close');
});
git checkout BranchB
git merge BranchA
git push origin BranchB
This is all if you intend to not merge your changes back to master. Generally it is a good practice to merge all your changes back to master, and create new branches off of that.
Also, after the merge command, you will have some conflicts, which you will have to edit manually and fix.
Make sure you are in the branch where you want to copy all the changes to. git merge
will take the branch you specify and merge it with the branch you are currently in.
Python treats \
in literal string in a special way.
This is so you can type '\n'
to mean newline or '\t'
to mean tab
Since '\&'
doesn't mean anything special to Python, instead of causing an error, the Python lexical analyser implicitly adds the extra \
for you.
Really it is better to use \\&
or r'\&'
instead of '\&'
The r
here means raw string and means that \
isn't treated specially unless it is right before the quote character at the start of the string.
In the interactive console, Python uses repr
to display the result, so that is why you see the double '\'. If you print
your string or use len(string)
you will see that it is really only the 2 characters
Some examples
>>> 'Here\'s a backslash: \\'
"Here's a backslash: \\"
>>> print 'Here\'s a backslash: \\'
Here's a backslash: \
>>> 'Here\'s a backslash: \\. Here\'s a double quote: ".'
'Here\'s a backslash: \\. Here\'s a double quote: ".'
>>> print 'Here\'s a backslash: \\. Here\'s a double quote: ".'
Here's a backslash: \. Here's a double quote ".
To Clarify the point Peter makes in his comment see this link
Unlike Standard C, all unrecognized escape sequences are left in the string unchanged, i.e., the backslash is left in the string. (This behavior is useful when debugging: if an escape sequence is mistyped, the resulting output is more easily recognized as broken.) It is also important to note that the escape sequences marked as “(Unicode only)” in the table above fall into the category of unrecognized escapes for non-Unicode string literals.
Use the finish
method. It is the simpler and easier method.
this.finish();
From Java documents -
You should use enum types any time you need to represent a fixed set of constants. That includes natural enum types such as the planets in our solar system and data sets where you know all possible values at compile time—for example, the choices on a menu, command line flags, and so on.
A common example is to replace a class with a set of private static final int constants (within reasonable number of constants) with an enum type. Basically if you think you know all possible values of "something" at compile time you can represent that as an enum type. Enums provide readability and flexibility over a class with constants.
Few other advantages that I can think of enum types. They is always one instance of a particular enum class (hence the concept of using enums as singleton arrives). Another advantage is you can use enums as a type in switch-case statement. Also you can use toString() on the enum to print them as readable strings.
You can also use the root shortcut like so
<template>
<div class="container">
<h1>Recipes</h1>
<img src="@/assets/burger.jpg" />
</div>
</template>
Although this was Nuxt, it should be same with Vue CLI.
For global access to jquery then several options exist. In my most recent webpack project, I wanted global access to jquery so I added the following to my plugins declarations:
plugins: [
new webpack.ProvidePlugin({
$: "jquery",
jQuery: "jquery"
})
]
This then means that jquery is accessible from within the JavaScript source code via global references $ and jQuery.
Of course, you need to have also installed jquery via npm:
$ npm i jquery --save
For a working example of this approach please feel free to fork my app on github
Yet another attempt... this one uses ×. A lot of the examples on this page only show for me as a box, but ×
works
<div class="close"></div>
.close {
height: 100px;
width: 100px;
background-color: #FA6900;
border-radius: 5px;
}
.close:after {
position:relative;
content:"\d7";
font-size:177px;
color:white;
font-weight:bold;
top:-53px;
left:-2px
}
The simplest possible solution I found was:
In your markup:
<a [href]="location.path()">Reload</a>
and in your component typescript file:
constructor(
private location: Location
) { }
In my case there was another directory within my workspace, having the same jar file as the one in my project. I hadn't created that directory or anything in it. It was created by Eclipse I believe. I just erased that directory and it just runs ok.
React.Fragment
fixed the issue for me
Error Code:
return (
<section className={classes.itemForm}>
<Card>
</Card>
</section>
);
Fix
return (
<React.Fragment>
<section className={classes.itemForm}>
<Card>
</Card>
</section>
</React.Fragment>
);
OK, I thought that I should put my case here .... I was getting the post array empty in specific cases .. The form works well, but some times users complain that they hit submit button, and nothing happens ..... After digging for a while, I discovered that my hosting company has a security module that checks users inputs and clears the whole post array (not only the malicious data) if it discovers so. In my example, a math teacher was trying to enter the equation: dy + dx + 0 = 0; and data was wiped completely.
To fix this, I just advise him now to enter the data in the text area as dy + dx + 0 = zero, and now it works .... This can save someone some time ..
Vim's <leader>
key is a way of creating a namespace for commands you want to define. Vim already maps most keys and combinations of Ctrl + (some key), so <leader>(some key)
is where you (or plugins) can add custom behavior.
For example, if you find yourself frequently deleting exactly 3 words and 7 characters, you might find it convenient to map a command via nmap <leader>d 3dw7x
so that pressing the leader key followed by d will delete 3 words and 7 characters. Because it uses the leader key as a prefix, you can be (relatively) assured that you're not stomping on any pre-existing behavior.
The default key for <leader>
is \
, but you can use the command :let mapleader = ","
to remap it to another key (,
in this case).
Usevim's page on the leader key has more information.
You can try putting 'Access-Control-Allow-Origin':'*'
in response.writeHead(, {[here]})
.
You have a few different options:
df = pandas.DataFrame({'g':[1]}, index=['isStop'])
#df.loc['g']
if 'g' in df.index:
print("find g")
if 'isStop' in df.index:
print("find a")
You may try this
#headerAgentInfoDetailsPhone
{
white-space:pre
}
#headerAgentInfoDetailsPhone:after {
content:"Office: XXXXX \A Mobile: YYYYY ";
}
Liam's link looks great, but also check out pandas.Timedelta
- looks like it plays nicely with NumPy's and Python's time deltas.
https://pandas.pydata.org/pandas-docs/stable/timedeltas.html
pd.date_range('2014-01-01', periods=10) + pd.Timedelta(days=1)
It is better to process HTML as a template than to build nodes via JavaScript (HTML is not XML after all.) You can keep your IFRAME's HTML syntax clean by using a template and then appending the template's contents into another DIV.
<div id="placeholder"></div>
<script id="iframeTemplate" type="text/html">
<iframe src="...">
<!-- replace this line with alternate content -->
</iframe>
</script>
<script type="text/javascript">
var element,
html,
template;
element = document.getElementById("placeholder");
template = document.getElementById("iframeTemplate");
html = template.innerHTML;
element.innerHTML = html;
</script>
This is common issue with floating points.
Use toFixed
in combination with parseFloat
.
Here is example in JavaScript:
function roundNumber(number, decimals) {
var newnumber = new Number(number+'').toFixed(parseInt(decimals));
return parseFloat(newnumber);
}
0.1 + 0.2; //=> 0.30000000000000004
roundNumber( 0.1 + 0.2, 12 ); //=> 0.3
It's available in the HTTP referer
header. You can get it in a servlet as follows:
String referrer = request.getHeader("referer"); // Yes, with the legendary misspelling.
You, however, need to realize that this is a client-controlled value and can thus be spoofed to something entirely different or even removed. Thus, whatever value it returns, you should not use it for any critical business processes in the backend, but only for presentation control (e.g. hiding/showing/changing certain pure layout parts) and/or statistics.
For the interested, background about the misspelling can be found in Wikipedia.
I had a similar problem. I had to schedule bunch of tasks that should be executed during a day using ScheduledExecutorService
.
This was solved by one task starting at 3:30 AM scheduling all other tasks relatively to his current time. And rescheduling himself for the next day at 3:30 AM.
With this scenario daylight savings are not an issue anymore.
The answers here already are great, but don't necessarily work for custom ViewGroups. To get all custom Views to retain their state, you must override onSaveInstanceState()
and onRestoreInstanceState(Parcelable state)
in each class.
You also need to ensure they all have unique ids, whether they're inflated from xml or added programmatically.
What I came up with was remarkably like Kobor42's answer, but the error remained because I was adding the Views to a custom ViewGroup programmatically and not assigning unique ids.
The link shared by mato will work, but it means none of the individual Views manage their own state - the entire state is saved in the ViewGroup methods.
The problem is that when multiple of these ViewGroups are added to a layout, the ids of their elements from the xml are no longer unique (if its defined in xml). At runtime, you can call the static method View.generateViewId()
to get a unique id for a View. This is only available from API 17.
Here is my code from the ViewGroup (it is abstract, and mOriginalValue is a type variable):
public abstract class DetailRow<E> extends LinearLayout {
private static final String SUPER_INSTANCE_STATE = "saved_instance_state_parcelable";
private static final String STATE_VIEW_IDS = "state_view_ids";
private static final String STATE_ORIGINAL_VALUE = "state_original_value";
private E mOriginalValue;
private int[] mViewIds;
// ...
@Override
protected Parcelable onSaveInstanceState() {
// Create a bundle to put super parcelable in
Bundle bundle = new Bundle();
bundle.putParcelable(SUPER_INSTANCE_STATE, super.onSaveInstanceState());
// Use abstract method to put mOriginalValue in the bundle;
putValueInTheBundle(mOriginalValue, bundle, STATE_ORIGINAL_VALUE);
// Store mViewIds in the bundle - initialize if necessary.
if (mViewIds == null) {
// We need as many ids as child views
mViewIds = new int[getChildCount()];
for (int i = 0; i < mViewIds.length; i++) {
// generate a unique id for each view
mViewIds[i] = View.generateViewId();
// assign the id to the view at the same index
getChildAt(i).setId(mViewIds[i]);
}
}
bundle.putIntArray(STATE_VIEW_IDS, mViewIds);
// return the bundle
return bundle;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
// We know state is a Bundle:
Bundle bundle = (Bundle) state;
// Get mViewIds out of the bundle
mViewIds = bundle.getIntArray(STATE_VIEW_IDS);
// For each id, assign to the view of same index
if (mViewIds != null) {
for (int i = 0; i < mViewIds.length; i++) {
getChildAt(i).setId(mViewIds[i]);
}
}
// Get mOriginalValue out of the bundle
mOriginalValue = getValueBackOutOfTheBundle(bundle, STATE_ORIGINAL_VALUE);
// get super parcelable back out of the bundle and pass it to
// super.onRestoreInstanceState(Parcelable)
state = bundle.getParcelable(SUPER_INSTANCE_STATE);
super.onRestoreInstanceState(state);
}
}
l = [1, 2, 3, 4, 5]
del l[0:3] # Here 3 specifies the number of items to be deleted.
This is the code if you want to delete a number of items from the list. You might as well skip the zero before the colon. It does not have that importance. This might do as well.
l = [1, 2, 3, 4, 5]
del l[:3] # Here 3 specifies the number of items to be deleted.
Assume B and C are overriding inherited method and their own implementation. Now D inherits both B & C using multiple inheritance. D should inherit the overridden method.The Question is which overridden method will be used? Will it be from B or C? Here we have an ambiguity. To exclude such situation multiple inheritance was not used in Java.
In case anyone needs to try and merge two dataframes together on the index (instead of another column), this also works!
T1 and T2 are dataframes that have the same indices
import pandas as pd
T1 = pd.merge(T1, T2, on=T1.index, how='outer')
P.S. I had to use merge because append would fill NaNs in unnecessarily.
Here are two methods to get more than 1 column in a scalar subquery (or inline subquery) and querying the lookup table only once. This is a bit convoluted but can be the very efficient in some special cases.
You can use concatenation to get several columns at once:
SELECT x,
regexp_substr(yz, '[^^]+', 1, 1) y,
regexp_substr(yz, '[^^]+', 1, 2) z
FROM (SELECT a.x,
(SELECT b.y || '^' || b.z yz
FROM b
WHERE b.v = a.v)
yz
FROM a)
You would need to make sure that no column in the list contain the separator character.
You could also use SQL objects:
CREATE OR REPLACE TYPE b_obj AS OBJECT (y number, z number);
SELECT x,
v.yz.y y,
v.yz.z z
FROM (SELECT a.x,
(SELECT b_obj(y, z) yz
FROM b
WHERE b.v = a.v)
yz
FROM a) v
You can do it for a const reference, but not for a non-const one. This is because C++ does not allow a temporary (the default value in this case) to be bound to non-const reference.
One way round this would be to use an actual instance as the default:
static int AVAL = 1;
void f( int & x = AVAL ) {
// stuff
}
int main() {
f(); // equivalent to f(AVAL);
}
but this is of very limited practical use.
Use clear: both;
I spent over a week trying to figure this out!
Taking a tip from the Java code base, try using .CompareTo
and test for the zero comparison. This assumes the .CompareTo
function takes in to account floating point equality in an accurate manner. For instance,
System.Math.PI.CompareTo(System.Math.PI) == 0
This predicate should return true
.
Note: This is a proper answer for a legacy version of AngularJS. See this question for updated versions.
$scope.$on('$routeChangeStart', function($event, next, current) {
// ... you could trigger something here ...
});
The following events are also available (their callback functions take different arguments):
See the $route docs.
There are two other undocumented events:
See What's the difference between $locationChangeSuccess and $locationChangeStart?
in Windows, you can use the runas command. For linux users, there are some alternatives for sudo in windows, you can check this out
http://helpdeskgeek.com/free-tools-review/5-windows-alternatives-linux-sudo-command/
For those, like me, who did not have the possibility to use angular directive and were "stuck" outside of the angular scope, here is something that might help you.
After hours searching on the web and on the angular doc, I have created a class that compiles HTML, place it inside a targets, and binds it to a scope ($rootScope
if there is no $scope
for that element)
/**
* AngularHelper : Contains methods that help using angular without being in the scope of an angular controller or directive
*/
var AngularHelper = (function () {
var AngularHelper = function () { };
/**
* ApplicationName : Default application name for the helper
*/
var defaultApplicationName = "myApplicationName";
/**
* Compile : Compile html with the rootScope of an application
* and replace the content of a target element with the compiled html
* @$targetDom : The dom in which the compiled html should be placed
* @htmlToCompile : The html to compile using angular
* @applicationName : (Optionnal) The name of the application (use the default one if empty)
*/
AngularHelper.Compile = function ($targetDom, htmlToCompile, applicationName) {
var $injector = angular.injector(["ng", applicationName || defaultApplicationName]);
$injector.invoke(["$compile", "$rootScope", function ($compile, $rootScope) {
//Get the scope of the target, use the rootScope if it does not exists
var $scope = $targetDom.html(htmlToCompile).scope();
$compile($targetDom)($scope || $rootScope);
$rootScope.$digest();
}]);
}
return AngularHelper;
})();
It covered all of my cases, but if you find something that I should add to it, feel free to comment or edit.
Hope it will help.
Focus might be what your looking for. With tabbing or clicking I think u mean giving the element the focus. Same code as Russ (Sorry i stole it :P) but firing an other event.
// this must be done after input1 exists in the DOM
var element = document.getElementById("input1");
if (element) element.focus();
If you do not know the height of child block:
#parent {_x000D_
background:green;_x000D_
width:200px;_x000D_
height:200px;_x000D_
display:table-cell;_x000D_
vertical-align:bottom;_x000D_
}_x000D_
.child {_x000D_
background:red;_x000D_
vertical-align:bottom;_x000D_
}
_x000D_
<div id="parent">_x000D_
<div class="child">child_x000D_
</div> _x000D_
</div>
_x000D_
http://jsbin.com/ULUXIFon/3/edit
If you know the height of the child block add the child block then add padding-top/margin-top:
#parent {_x000D_
background:green;_x000D_
width:200px;_x000D_
height:130px;_x000D_
padding-top:70px;_x000D_
}_x000D_
.child {_x000D_
background:red;_x000D_
vertical-align:_x000D_
bottom;_x000D_
height:130px;_x000D_
}
_x000D_
<div id="parent">_x000D_
<div class="child">child_x000D_
</div> _x000D_
</div>
_x000D_
You can use this function, which creates a tempfile in the filesystem and returns the path to the downloaded file if everything worked fine:
function getFileContents($url)
{
// Workaround: Save temp file
$img = tempnam(sys_get_temp_dir(), 'pdf-');
$img .= '.' . pathinfo($url, PATHINFO_EXTENSION);
$fp = fopen($img, 'w+');
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
$result = curl_exec($ch);
curl_close($ch);
fclose($fp);
return $result ? $img : false;
}
You could try to kill the PHP process:
exec('kill -9 ' . getmypid());
You can use int casting which allows the base specification.
int(b, 2) # Convert a binary string to a decimal int.
restorecon
command works as below :
restorecon -v -R /var/www/html/
works
scp localhost:"f/a\ b\ c" .
scp localhost:'f/a\ b\ c' .
does not work
scp localhost:'f/a b c' .
The reason is that the string is interpreted by the shell before the path is passed to the scp command. So when it gets to the remote the remote is looking for a string with unescaped quotes and it fails
To see this in action, start a shell with the -vx options ie bash -vx
and it will display the interpolated version of the command as it runs it.
Android doesn't come with SOAP library. However, you can download 3rd party library here:
https://github.com/simpligility/ksoap2-android
If you need help using it, you might find this thread helpful:
How to call a .NET Webservice from Android using KSOAP2?
This works, apply in ul
:
display:flex;
flex-direction:column;
flex-wrap:wrap;
Good answers though, anyway I want to share my Object Oriented solution Up to date for swift 5.
please check it out: AsyncTask
Conceptually inspired by android's AsyncTask, I've wrote my own class in Swift
AsyncTask enables proper and easy use of the UI thread. This class allows to perform background operations and publish results on the UI thread.
Here are few usage examples
Example 1 -
AsyncTask(backgroundTask: {(p:String)->Void in//set BGParam to String and BGResult to Void
print(p);//print the value in background thread
}).execute("Hello async");//execute with value 'Hello async'
Example 2 -
let task2=AsyncTask(beforeTask: {
print("pre execution");//print 'pre execution' before backgroundTask
},backgroundTask:{(p:Int)->String in//set BGParam to Int & BGResult to String
if p>0{//check if execution value is bigger than zero
return "positive"//pass String "poitive" to afterTask
}
return "negative";//otherwise pass String "negative"
}, afterTask: {(p:String) in
print(p);//print background task result
});
task2.execute(1);//execute with value 1
It has 2 generic types:
BGParam
- the type of the parameter sent to the task upon execution.
BGResult
- the type of the result of the background computation.
When you create an AsyncTask you can those types to whatever you need to pass in and out of the background task, but if you don't need those types, you can mark it as unused with just setting it to: Void
or with shorter syntax: ()
When an asynchronous task is executed, it goes through 3 steps:
beforeTask:()->Void
invoked on the UI thread just before the task is executed.backgroundTask: (param:BGParam)->BGResult
invoked on the background thread immediately afterafterTask:(param:BGResult)->Void
invoked on the UI thread with result from the background taskI had this problem and it was because the panel was outside of the [data-role="page"] element.
Login to virtual machine use below command to check ip address. (anyone will work)
If you used NAT for your virtual machine settings(your machine ip will be 10.0.2.15), then you have to use port forwarding to connect to machine. IP address will be 127.0.0.1
If you used bridged networking/Host only networking, then you will have separate Ip address. Use that IP address to connect virtual machine
try to implement with javascript this:
<div id="mydiv" onclick="myhref('http://web.com');" >some stuff </div>
<script type="text/javascript">
function myhref(web){
window.location.href = web;}
</script>
Since the frameborder
attribute is only necessary for IE, there is another way to get around the validator. This is a lightweight way that doesn't require Javascript or any DOM manipulation.
<!--[if IE]>
<iframe src="source" frameborder="0">?</iframe>
<![endif]-->
<!--[if !IE]>-->
<iframe src="source" style="border:none">?</iframe>
<!-- <![endif]-->
Yes, but I have never seen anyone attempt to implement any sort of polymorphism with C.
This solves the issue. For some reason SQL Server does not like the default MSSQLSERVER account. Switching it to a local user account resolves the issue.
To do this task download.js library can be used. Here is an example from library docs:
download("data:image/gif;base64,R0lGODlhRgAVAIcAAOfn5+/v7/f39////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////yH5BAAAAP8ALAAAAABGABUAAAj/AAEIHAgggMGDCAkSRMgwgEKBDRM+LBjRoEKDAjJq1GhxIMaNGzt6DAAypMORJTmeLKhxgMuXKiGSzPgSZsaVMwXUdBmTYsudKjHuBCoAIc2hMBnqRMqz6MGjTJ0KZcrz5EyqA276xJrVKlSkWqdGLQpxKVWyW8+iJcl1LVu1XttafTs2Lla3ZqNavAo37dm9X4eGFQtWKt+6T+8aDkxUqWKjeQUvfvw0MtHJcCtTJiwZsmLMiD9uplvY82jLNW9qzsy58WrWpDu/Lp0YNmPXrVMvRm3T6GneSX3bBt5VeOjDemfLFv1XOW7kncvKdZi7t/S7e2M3LkscLcvH3LF7HwSuVeZtjuPPe2d+GefPrD1RpnS6MGdJkebn4/+oMSAAOw==", "dlDataUrlBin.gif", "image/gif");
add layout_gravity="center"
or "center_horizontal"
to the parent layout.
On a side note, your LinearLayout
inside your TableRow
seems un-necessary, as a TableRow
is already an horizontal LinearLayout
.
"How to find all a
which are children of <li class=test>
but not any others?"
Given the HTML below (I added another <a>
to show te difference between select
and select_one
):
<div>
<li class="test">
<a>link1</a>
<ul>
<li>
<a>link2</a>
</li>
</ul>
<a>link3</a>
</li>
</div>
The solution is to use child combinator (>
) that is placed between two CSS selectors:
>>> soup.select('li.test > a')
[<a>link1</a>, <a>link3</a>]
In case you want to find only the first child:
>>> soup.select_one('li.test > a')
<a>link1</a>
I want to chime in here even though this question has already been answered correctly by @pscl in case anyone else runs into the same issue I did. Out of the 4 methods give I chose to use the es6 syntax with arrow functions due to it's conciseness and lack of dependence on external libraries:
Using Array.prototype.filter with ES6 Arrow Functions
removeItem(index) {
this.setState((prevState) => ({
data: prevState.data.filter((_, i) => i != index)
}));
}
As you can see I made a slight modification to ignore the type of index (!==
to !=
) because in my case I was retrieving the index from a string field.
Another helpful point if you're seeing weird behavior when removing an element on the client side is to NEVER use the index of an array as the key for the element:
// bad
{content.map((content, index) =>
<p key={index}>{content.Content}</p>
)}
When React diffs with the virtual DOM on a change, it will look at the keys to determine what has changed. So if you're using indices and there is one less in the array, it will remove the last one. Instead, use the id's of the content as keys, like this.
// good
{content.map(content =>
<p key={content.id}>{content.Content}</p>
)}
The above is an excerpt from this answer from a related post.
Happy Coding Everyone!
Try this:
const strippedString = htmlString.replace(/(<([^>]+)>)/gi, "");
console.log(strippedString);
You're missing comma (,
) inbetween:
>>> ((1,2) (2,3))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'tuple' object is not callable
Put comma:
>>> ((1,2), (2,3))
((1, 2), (2, 3))
This is the activity the tools UI editor uses to render your layout preview. It is documented here:
This attribute declares which activity this layout is associated with by default. This enables features in the editor or layout preview that require knowledge of the activity, such as what the layout theme should be in the preview and where to insert onClick handlers when you make those from a quickfix
The aggregation framework was introduced in mongodb 2.2 . You can use the string operator "$strcasecmp" to make a case-insensitive comparison between strings. It's more recommended and easier than using regex.
Here's the official document on the aggregation command operator: https://docs.mongodb.com/manual/reference/operator/aggregation/strcasecmp/#exp._S_strcasecmp .
For .NET 4.5 SystemCommands class will do the trick (.NET 4.0 users can use WPF Shell Extension google - Microsoft.Windows.Shell or Nicholas Solution).
<Window.CommandBindings>
<CommandBinding Command="{x:Static SystemCommands.CloseWindowCommand}"
CanExecute="CloseWindow_CanExec"
Executed="CloseWindow_Exec" />
</Window.CommandBindings>
<!-- Binding Close Command to the button control -->
<Button ToolTip="Close Window" Content="Close" Command="{x:Static SystemCommands.CloseWindowCommand}"/>
In the Code Behind you can implement the handlers like this:
private void CloseWindow_CanExec(object sender, CanExecuteRoutedEventArgs e)
{
e.CanExecute = true;
}
private void CloseWindow_Exec(object sender, ExecutedRoutedEventArgs e)
{
SystemCommands.CloseWindow(this);
}
varchar(10) will store 10 characters, which may be more than 10 bytes. In indexes, it will allocate the maximium length of the field - so if you are using UTF8-mb4, it will allocate 40 bytes for the 10 character field.
I did the truncation with new java8 API. I faced up with one strange thing but in general it's truncate...
Instant instant = date.toInstant();
instant = instant.truncatedTo(ChronoUnit.DAYS);
date = Date.from(instant);
I FIGURED IT OUT. SIMPLE, EFFECTIVE NO jQUERY
We're going to to be using a hidden checkbox.
This example includes one "on click - off click 'hover / active' state"
--
To make content itself clickable:
HTML
<input type="checkbox" id="activate-div">
<label for="activate-div">
<div class="my-div">
//MY DIV CONTENT
</div>
</label>
CSS
#activate-div{display:none}
.my-div{background-color:#FFF}
#activate-div:checked ~ label
.my-div{background-color:#000}
To make button change content:
HTML
<input type="checkbox" id="activate-div">
<div class="my-div">
//MY DIV CONTENT
</div>
<label for="activate-div">
//MY BUTTON STUFF
</label>
CSS
#activate-div{display:none}
.my-div{background-color:#FFF}
#activate-div:checked +
.my-div{background-color:#000}
Hope it helps!!
First you need to get the counts for each category, i.e. how many Bads and Goods and so on are there for each group (Food, Music, People). This would be done like so:
raw <- read.csv("http://pastebin.com/raw.php?i=L8cEKcxS",sep=",")
raw[,2]<-factor(raw[,2],levels=c("Very Bad","Bad","Good","Very Good"),ordered=FALSE)
raw[,3]<-factor(raw[,3],levels=c("Very Bad","Bad","Good","Very Good"),ordered=FALSE)
raw[,4]<-factor(raw[,4],levels=c("Very Bad","Bad","Good","Very Good"),ordered=FALSE)
raw=raw[,c(2,3,4)] # getting rid of the "people" variable as I see no use for it
freq=table(col(raw), as.matrix(raw)) # get the counts of each factor level
Then you need to create a data frame out of it, melt it and plot it:
Names=c("Food","Music","People") # create list of names
data=data.frame(cbind(freq),Names) # combine them into a data frame
data=data[,c(5,3,1,2,4)] # sort columns
# melt the data frame for plotting
data.m <- melt(data, id.vars='Names')
# plot everything
ggplot(data.m, aes(Names, value)) +
geom_bar(aes(fill = variable), position = "dodge", stat="identity")
Is this what you're after?
To clarify a little bit, in ggplot multiple grouping bar you had a data frame that looked like this:
> head(df)
ID Type Annee X1PCE X2PCE X3PCE X4PCE X5PCE X6PCE
1 1 A 1980 450 338 154 36 13 9
2 2 A 2000 288 407 212 54 16 23
3 3 A 2020 196 434 246 68 19 36
4 4 B 1980 111 326 441 90 21 11
5 5 B 2000 63 298 443 133 42 21
6 6 B 2020 36 257 462 162 55 30
Since you have numerical values in columns 4-9, which would later be plotted on the y axis, this can be easily transformed with reshape
and plotted.
For our current data set, we needed something similar, so we used freq=table(col(raw), as.matrix(raw))
to get this:
> data
Names Very.Bad Bad Good Very.Good
1 Food 7 6 5 2
2 Music 5 5 7 3
3 People 6 3 7 4
Just imagine you have Very.Bad
, Bad
, Good
and so on instead of X1PCE
, X2PCE
, X3PCE
. See the similarity? But we needed to create such structure first. Hence the freq=table(col(raw), as.matrix(raw))
.
There is also a way to create XAML bindable SelectedItem property without using Interaction.Behaviors.
public static class BindableSelectedItemHelper
{
#region Properties
public static readonly DependencyProperty SelectedItemProperty = DependencyProperty.RegisterAttached("SelectedItem", typeof(object), typeof(BindableSelectedItemHelper),
new FrameworkPropertyMetadata(null, OnSelectedItemPropertyChanged));
public static readonly DependencyProperty AttachProperty = DependencyProperty.RegisterAttached("Attach", typeof(bool), typeof(BindableSelectedItemHelper), new PropertyMetadata(false, Attach));
private static readonly DependencyProperty IsUpdatingProperty = DependencyProperty.RegisterAttached("IsUpdating", typeof(bool), typeof(BindableSelectedItemHelper));
#endregion
#region Implementation
public static void SetAttach(DependencyObject dp, bool value)
{
dp.SetValue(AttachProperty, value);
}
public static bool GetAttach(DependencyObject dp)
{
return (bool)dp.GetValue(AttachProperty);
}
public static string GetSelectedItem(DependencyObject dp)
{
return (string)dp.GetValue(SelectedItemProperty);
}
public static void SetSelectedItem(DependencyObject dp, object value)
{
dp.SetValue(SelectedItemProperty, value);
}
private static bool GetIsUpdating(DependencyObject dp)
{
return (bool)dp.GetValue(IsUpdatingProperty);
}
private static void SetIsUpdating(DependencyObject dp, bool value)
{
dp.SetValue(IsUpdatingProperty, value);
}
private static void Attach(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
TreeListView treeListView = sender as TreeListView;
if (treeListView != null)
{
if ((bool)e.OldValue)
treeListView.SelectedItemChanged -= SelectedItemChanged;
if ((bool)e.NewValue)
treeListView.SelectedItemChanged += SelectedItemChanged;
}
}
private static void OnSelectedItemPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
TreeListView treeListView = sender as TreeListView;
if (treeListView != null)
{
treeListView.SelectedItemChanged -= SelectedItemChanged;
if (!(bool)GetIsUpdating(treeListView))
{
foreach (TreeViewItem item in treeListView.Items)
{
if (item == e.NewValue)
{
item.IsSelected = true;
break;
}
else
item.IsSelected = false;
}
}
treeListView.SelectedItemChanged += SelectedItemChanged;
}
}
private static void SelectedItemChanged(object sender, RoutedEventArgs e)
{
TreeListView treeListView = sender as TreeListView;
if (treeListView != null)
{
SetIsUpdating(treeListView, true);
SetSelectedItem(treeListView, treeListView.SelectedItem);
SetIsUpdating(treeListView, false);
}
}
#endregion
}
You can then use this in your XAML as:
<TreeView helper:BindableSelectedItemHelper.Attach="True"
helper:BindableSelectedItemHelper.SelectedItem="{Binding SelectedItem, Mode=TwoWay}">
Use the oncontextmenu
event.
Here's an example:
<div oncontextmenu="javascript:alert('success!');return false;">
Lorem Ipsum
</div>
And using event listeners (credit to rampion from a comment in 2011):
el.addEventListener('contextmenu', function(ev) {
ev.preventDefault();
alert('success!');
return false;
}, false);
Don't forget to return false, otherwise the standard context menu will still pop up.
If you are going to use a function you've written rather than javascript:alert("Success!")
, remember to return false in BOTH the function AND the oncontextmenu
attribute.
I suspect the reason this works is the browser rendering runs on the same thread as javascript, and setTimeout(function(){},0); queues the javascript function inside setTimeout to execute when the browser becomes idle. If anyone has a more in-depth explanation please share it.
setTimeout(function(){
if(document.getElementById('mobileno')){
document.getElementById('mobileno').focus();
}
},0);
Sub SelectAllCellsInSheet(SheetName As String)
lastCol = Sheets(SheetName).Range("a1").End(xlToRight).Column
Lastrow = Sheets(SheetName).Cells(1, 1).End(xlDown).Row
Sheets(SheetName).Range("A2", Sheets(SheetName).Cells(Lastrow, lastCol)).Select
End Sub
To use with ActiveSheet:
Call SelectAllCellsInSheet(ActiveSheet.Name)
The main problem is that:
in a constructor, the injection of the dependencies has not yet occurred*
*obviously excluding Constructor Injection
Real-world example:
public class Foo {
@Inject
Logger LOG;
@PostConstruct
public void fooInit(){
LOG.info("This will be printed; LOG has already been injected");
}
public Foo() {
LOG.info("This will NOT be printed, LOG is still null");
// NullPointerException will be thrown here
}
}
IMPORTANT:
@PostConstruct
and @PreDestroy
have been completely removed in Java 11.
To keep using them, you'll need to add the javax.annotation-api JAR to your dependencies.
<!-- https://mvnrepository.com/artifact/javax.annotation/javax.annotation-api -->
<dependency>
<groupId>javax.annotation</groupId>
<artifactId>javax.annotation-api</artifactId>
<version>1.3.2</version>
</dependency>
// https://mvnrepository.com/artifact/javax.annotation/javax.annotation-api
compile group: 'javax.annotation', name: 'javax.annotation-api', version: '1.3.2'
There have been previous answers that showed the trick. In essence:
you must retain POSIXct
types to take advantage of all the existing plotting functions
if you want to 'overlay' several days worth on a single plot, highlighting the intra-daily variation, the best trick is too ...
impose the same day (and month and even year if need be, which is not the case here)
which you can do by overriding the day-of-month and month components when in POSIXlt
representation, or just by offsetting the 'delta' relative to 0:00:00 between the different days.
So with times
and val
as helpfully provided by you:
## impose month and day based on first obs
ntimes <- as.POSIXlt(times) # convert to 'POSIX list type'
ntimes$mday <- ntimes[1]$mday # and $mon if it differs too
ntimes <- as.POSIXct(ntimes) # convert back
par(mfrow=c(2,1))
plot(times,val) # old times
plot(ntimes,val) # new times
yields this contrasting the original and modified time scales:
This is not possible as of May 2017, because Postman only works with HTTP methods such as POST, GET, PUT, DELETE.
P/S: There is a request for this if you want to upvote: github.com/postmanlabs/postman-app-support/issues/4009
This is a bit old but I found a better solution for this. I was trying the chosen answer here but looks like .testrunconfig is already obsolete.
for Unit tests, config really shouldn't be part of what your testing so create a mock which you can inject. In this example I was using Moq.
Mock<IConfig> _configMock;
_configMock.Setup(config => config.ConfigKey).Returns("ConfigValue");
var SUT = new SUT(_configMock.Object);
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
if(config.AppSettings.Settings[configName] != null)
{
config.AppSettings.Settings.Remove(configName);
}
config.AppSettings.Settings.Add(configName, configValue);
config.Save(ConfigurationSaveMode.Modified, true);
ConfigurationManager.RefreshSection("appSettings");
The Resource
class also has a method getDimensionPixelSize() which I think will fit your needs.
AsyncTask uses a thread pool pattern for running the stuff from doInBackground(). The issue is initially (in early Android OS versions) the pool size was just 1, meaning no parallel computations for a bunch of AsyncTasks. But later they fixed that and now the size is 5, so at most 5 AsyncTasks can run simultaneously. Unfortunately I don't remember in what version exactly they changed that.
UPDATE:
Here is what current (2012-01-27) API says on this:
When first introduced, AsyncTasks were executed serially on a single background thread. Starting with DONUT, this was changed to a pool of threads allowing multiple tasks to operate in parallel. After HONEYCOMB, it is planned to change this back to a single thread to avoid common application errors caused by parallel execution. If you truly want parallel execution, you can use the executeOnExecutor(Executor, Params...) version of this method with THREAD_POOL_EXECUTOR; however, see commentary there for warnings on its use.
DONUT is Android 1.6, HONEYCOMB is Android 3.0.
UPDATE: 2
See the comment by kabuko
from Mar 7 2012 at 1:27
.
It turns out that for APIs where "a pool of threads allowing multiple tasks to operate in parallel" is used (starting from 1.6 and ending on 3.0) the number of simultaneously running AsyncTasks depends on how many tasks have been passed for execution already, but have not finished their doInBackground()
yet.
This is tested/confirmed by me on 2.2. Suppose you have a custom AsyncTask that just sleeps a second in doInBackground()
. AsyncTasks use a fixed size queue internally for storing delayed tasks. Queue size is 10 by default. If you start 15 your custom tasks in a row, then first 5 will enter their doInBackground()
, but the rest will wait in a queue for a free worker thread. As soon as any of the first 5 finishes, and thus releases a worker thread, a task from the queue will start execution. So in this case at most 5 tasks will run simultaneously. However if you start 16 your custom tasks in a row, then first 5 will enter their doInBackground()
, the rest 10 will get into the queue, but for the 16th a new worker thread will be created so it'll start execution immediately. So in this case at most 6 tasks will run simultaneously.
There is a limit of how many tasks can be run simultaneously. Since AsyncTask
uses a thread pool executor with limited max number of worker threads (128) and the delayed tasks queue has fixed size 10, if you try to execute more than 138 your custom tasks the app will crash with java.util.concurrent.RejectedExecutionException
.
Starting from 3.0 the API allows to use your custom thread pool executor via AsyncTask.executeOnExecutor(Executor exec, Params... params)
method. This allows, for instance, to configure the size of the delayed tasks queue if default 10 is not what you need.
As @Knossos mentions, there is an option to use AsyncTaskCompat.executeParallel(task, params);
from support v.4 library to run tasks in parallel without bothering with API level. This method became deprecated in API level 26.0.0.
UPDATE: 3
Here is a simple test app to play with number of tasks, serial vs. parallel execution: https://github.com/vitkhudenko/test_asynctask
UPDATE: 4 (thanks @penkzhou for pointing this out)
Starting from Android 4.4 AsyncTask
behaves differently from what was described in UPDATE: 2 section. There is a fix to prevent AsyncTask
from creating too many threads.
Before Android 4.4 (API 19) AsyncTask
had the following fields:
private static final int CORE_POOL_SIZE = 5;
private static final int MAXIMUM_POOL_SIZE = 128;
private static final BlockingQueue<Runnable> sPoolWorkQueue =
new LinkedBlockingQueue<Runnable>(10);
In Android 4.4 (API 19) the above fields are changed to this:
private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();
private static final int CORE_POOL_SIZE = CPU_COUNT + 1;
private static final int MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;
private static final BlockingQueue<Runnable> sPoolWorkQueue =
new LinkedBlockingQueue<Runnable>(128);
This change increases the size of the queue to 128 items and reduces the maximum number of threads to the number of CPU cores * 2 + 1. Apps can still submit the same number of tasks.
I ran into the same problem and was able to resolve it in very powerful way that allows unlimited sorting possibilities.
I created a View using (saving) 2 sort orders (*explanation on how to do so below).
After that I simply applied the update queries to the View created and it worked great.
Here are the 2 queries I used on the view:
1st Query:
Update MyView
Set SortID=0
2nd Query:
DECLARE @sortID int
SET @sortID = 0
UPDATE MyView
SET @sortID = sortID = @sortID + 1
*To be able to save the sorting on the View I put TOP into the SELECT statement. This very useful workaround allows the View results to be returned sorted as set when the View was created when the View is opened. In my case it looked like:
(NOTE: Using this workaround will place an big load on the server if using a large table and it is therefore recommended to include as few fields as possible in the view if working with large tables)
SELECT TOP (600000)
dbo.Items.ID, dbo.Items.Code, dbo.Items.SortID, dbo.Supplier.Date,
dbo.Supplier.Code AS Expr1
FROM dbo.Items INNER JOIN
dbo.Supplier ON dbo.Items.SupplierCode = dbo.Supplier.Code
ORDER BY dbo.Supplier.Date, dbo.Items.ID DESC
Running: SQL Server 2005 on a Windows Server 2003
Additional Keywords: How to Update a SQL column with Ascending or Descending Numbers - Numeric Values / how to set order in SQL update statement / how to save order by in sql view / increment sql update / auto autoincrement sql update / create sql field with ascending numbers
Try doing this, there's no special character to concatenate in bash :
mystring="${arg1}12${arg2}endoffile"
If you don't put brackets, you will ask bash to concatenate $arg112 + $argendoffile
(I guess that's not what you asked) like in the following example :
mystring="$arg112$arg2endoffile"
The brackets are delimiters for the variables when needed. When not needed, you can use it or not.
bash
> 3.1)
$ arg1=foo
$ arg2=bar
$ mystring="$arg1"
$ mystring+="12"
$ mystring+="$arg2"
$ mystring+="endoffile"
$ echo "$mystring"
foo12barendoffile
I think it has to do with your second element in storbinary
. You are trying to open file
, but it is already a pointer to the file you opened in line file = open(local_path,'rb')
. So, try to use ftp.storbinary("STOR " + i, file)
.
Multipal image uplode with other taBLE $sql1 = "INSERT INTO event(title) VALUES('$title')";
$result1 = mysqli_query($connection,$sql1) or die(mysqli_error($connection));
$lastid= $connection->insert_id;
foreach ($_FILES["file"]["error"] as $key => $error) {
if ($error == UPLOAD_ERR_OK ){
$name = $lastid.$_FILES['file']['name'][$key];
$target_dir = "photo/";
$sql2 = "INSERT INTO photos(image,eventid) VALUES ('".$target_dir.$name."','".$lastid."')";
$result2 = mysqli_query($connection,$sql2) or die(mysqli_error($connection));
move_uploaded_file($_FILES['file']['tmp_name'][$key],$target_dir.$name);
}
}
And how to fetch
$query = "SELECT * FROM event ";
$result = mysqli_query($connection,$query) or die(mysqli_error());
if($result->num_rows > 0) {
while($r = mysqli_fetch_assoc($result)){
$eventid= $r['id'];
$sqli="select id,image from photos where eventid='".$eventid."'";
$resulti=mysqli_query($connection,$sqli);
$image_json_array = array();
while($row = mysqli_fetch_assoc($resulti)){
$image_id = $row['id'];
$image_name = $row['image'];
$image_json_array[] = array("id"=>$image_id,"name"=>$image_name);
}
$msg1[] = array ("imagelist" => $image_json_array);
}
in ajax $(document).ready(function(){ $('#addCAT').validate({ rules:{name:required:true}submitHandler:function(form){var formurl = $(form).attr('action'); $.ajax({ url: formurl,type: "POST",data: new FormData(form),cache: false,processData: false,contentType: false,success: function(data) {window.location.href="{{ url('admin/listcategory')}}";}}); } })})
Another angle on this is returning an Exception, NOT throwing one, from the processing code.
I needed to do this with a templating framework I'm writing. If the user attempts to access a property that doesn't exist on the data, I return the error from deep within the processing function, rather than throwing it.
Then, in the calling code, I can decide whether to throw this returned error, causing the try() to catch(), or just continue:
// process the template
try
{
// this function will pass back a value, or a TemplateExecption if invalid
$result = $this->process($value);
// if the result is an error, choose what to do with it
if($result instanceof TemplateExecption)
{
if(DEBUGGING == TRUE)
{
throw($result); // throw the original error
}
else
{
$result = NULL; // ignore the error
}
}
}
// catch TemplateExceptions
catch(TemplateException $e)
{
// handle template exceptions
}
// catch normal PHP Exceptions
catch(Exception $e)
{
// handle normal exceptions
}
// if we get here, $result was valid, or ignored
return $result;
The result of this is I still get the context of the original error, even though it was thrown at the top.
Another option might be to return a custom NullObject or a UnknownProperty object and compare against that before deciding to trip the catch(), but as you can re-throw errors anyway, and if you're fully in control of the overall structure, I think this is a neat way round the issue of not being able to continue try/catches.
try:
.table-hover > tbody > tr.active:hover > th {
background-color: #color;
}
For Windows, first install the git base from here: https://git-scm.com/downloads
Next, set the environment variable:
C:\Program Files\Git\git-bash.exe
To test it, open the command window: press Windows+R, type cmd and then type ssh.
If you want to go even further than @tetra with ES6 you can use the Object spread syntax and do something like this:
let john = {
firstName: "John",
lastName: "Doe",
};
let people = new Array(10).fill().map((e, i) => {(...john, id: i});
I have created an ultra Simple Working DeadLock Example:-
package com.thread.deadlock;
public class ThreadDeadLockClient {
public static void main(String[] args) {
ThreadDeadLockObject1 threadDeadLockA = new ThreadDeadLockObject1("threadDeadLockA");
ThreadDeadLockObject2 threadDeadLockB = new ThreadDeadLockObject2("threadDeadLockB");
new Thread(new Runnable() {
@Override
public void run() {
threadDeadLockA.methodA(threadDeadLockB);
}
}).start();
new Thread(new Runnable() {
@Override
public void run() {
threadDeadLockB.methodB(threadDeadLockA);
}
}).start();
}
}
package com.thread.deadlock;
public class ThreadDeadLockObject1 {
private String name;
ThreadDeadLockObject1(String name){
this.name = name;
}
public synchronized void methodA(ThreadDeadLockObject2 threadDeadLockObject2) {
System.out.println("In MethodA "+" Current Object--> "+this.getName()+" Object passed as parameter--> "+threadDeadLockObject2.getName());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
threadDeadLockObject2.methodB(this);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
package com.thread.deadlock;
public class ThreadDeadLockObject2 {
private String name;
ThreadDeadLockObject2(String name){
this.name = name;
}
public synchronized void methodB(ThreadDeadLockObject1 threadDeadLockObject1) {
System.out.println("In MethodB "+" Current Object--> "+this.getName()+" Object passed as parameter--> "+threadDeadLockObject1.getName());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
threadDeadLockObject1.methodA(this);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
In the above example 2 threads are executing the synchronized methods of two different objects. Synchronized methodA is called by object threadDeadLockA and synchronized methodB is called by object threadDeadLockB. In methodA a reference of threadDeadLockB is passed and in methodB a reference of threadDeadLockA is passed. Now each thread tries to get lock on the another object. In methodA the thread who is holding a lock on threadDeadLockA is trying to get lock on object threadDeadLockB and similarly in methodB the thread who is holding a lock on threadDeadLockB is trying to get lock on threadDeadLockA. Thus both the threads will wait forever creating a deadlock.
You can try:
In HTML:
<asp:TextBox ID="TextBox1" runat="server" onKeyDown="submitButton(event)"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
And javascript:
function submitButton(event) {
if (event.which == 13) {
$('#Button1').trigger('click');
}
}
Code behind:
protected void Button1_Click(object sender, EventArgs e)
{
//load data and fill to gridview
} // fixed the function view for users
Hope this help
I don't think there would be any significant performance difference between them, but I would prefer the 1st way.
If you have a Boolean
reference, Boolean.toString(boolean)
will throw NullPointerException
if your reference is null
. As the reference is unboxed to boolean
before being passed to the method.
While, String.valueOf()
method as the source code shows, does the explicit null
check:
public static String valueOf(Object obj) {
return (obj == null) ? "null" : obj.toString();
}
Just test this code:
Boolean b = null;
System.out.println(String.valueOf(b)); // Prints null
System.out.println(Boolean.toString(b)); // Throws NPE
For primitive boolean, there is no difference.
This helped me remove background color, hope it helps someone.
setBackgroundColor(Color.TRANSPARENT)
If you want to keep your line-height and force the placeholder to have the same, you can directly edit the placeholder CSS since the newer browser versions. That did the trick for me:
input::-webkit-input-placeholder { /* WebKit browsers */
line-height: 1.5em;
}
input:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
line-height: 1.5em;
}
input::-moz-placeholder { /* Mozilla Firefox 19+ */
line-height: 1.5em;
}
input:-ms-input-placeholder { /* Internet Explorer 10+ */
line-height: 1.5em;
}
It depends on the database to which you're trying to connect, the method by which you created the connection, and the version of Excel that you're using. (Also, most probably, the version of the relevant ODBC driver on your computer.)
The following examples are using SQL Server 2008 and Excel 2007, both on my local machine.
When I used the Data Connection Wizard (on the Data tab of the ribbon, in the Get External Data section, under From Other Sources), I saw the same thing that you did: the Parameters button was disabled, and adding a parameter to the query, something like select field from table where field2 = ?
, caused Excel to complain that the value for the parameter had not been specified, and the changes were not saved.
When I used Microsoft Query (same place as the Data Connection Wizard), I was able to create parameters, specify a display name for them, and enter values each time the query was run. Bringing up the Connection Properties for that connection, the Parameters... button is enabled, and the parameters can be modified and used as I think you want.
I was also able to do this with an Access database. It seems reasonable that Microsoft Query could be used to create parameterized queries hitting other types of databases, but I can't easily test that right now.
If you are using c# 3.0 (or above) you can use extenders
I wanted to do something similar, except setting the number to NaN rather than removing it from the data, since if you remove it you change the length which can mess up plotting (i.e. if you're only removing outliers from one column in a table, but you need it to remain the same as the other columns so you can plot them against each other).
To do so I used numpy's masking functions:
def reject_outliers(data, m=2):
stdev = np.std(data)
mean = np.mean(data)
maskMin = mean - stdev * m
maskMax = mean + stdev * m
mask = np.ma.masked_outside(data, maskMin, maskMax)
print('Masking values outside of {} and {}'.format(maskMin, maskMax))
return mask
Let's make things simple, you don't need to read the document about a "custom tag" (as a 16 years web developer, I have enough this kind of tags, such as in struts, webwork, jsp, rails and now it's vuejs)
just press F12, and you will see the source code like:
<div>
<a href="#/topologies" class="luelue">page1</a>
<a href="#/" aria-current="page" class="router-link-exact-active router-link-active">page2</a>
<a href="#/databases" class="">page3</a>
</div>
so just add styles for the .router-link-active
or router-link-exact-active
if you want more details, check the router-link
api:
Last version of jupyter notebook accepts copy/paste of image natively
Hey guys the code below worked perfectly fine for me. Just replace the setFrom and addAddress with your preference and that's it.
<?php
/**
* PHPMailer simple file upload and send example.
*/
//Import the PHPMailer class into the global namespace
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
$msg = '';
if (array_key_exists('userfile', $_FILES)) {
// First handle the upload
// Don't trust provided filename - same goes for MIME types
// See http://php.net/manual/en/features.file-upload.php#114004 for more thorough upload validation
$uploadfile = tempnam(sys_get_temp_dir(), hash('sha256', $_FILES['userfile']['name']));
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile))
{
// Upload handled successfully
// Now create a message
require 'vendor/autoload.php';
$mail = new PHPMailer;
$mail->setFrom('[email protected]', 'CV from Web site');
$mail->addAddress('[email protected]', 'CV');
$mail->Subject = 'PHPMailer file sender';
$mail->Body = 'My message body';
$filename = $_FILES["userfile"]["name"]; // add this line of code to auto pick the file name
//$mail->addAttachment($uploadfile, 'My uploaded file'); use the one below instead
$mail->addAttachment($uploadfile, $filename);
if (!$mail->send())
{
$msg .= "Mailer Error: " . $mail->ErrorInfo;
}
else
{
$msg .= "Message sent!";
}
}
else
{
$msg .= 'Failed to move file to ' . $uploadfile;
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>PHPMailer Upload</title>
</head>
<body>
<?php if (empty($msg)) { ?>
<form method="post" enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SIZE" value="4194304" />
<input name="userfile" type="file">
<input type="submit" value="Send File">
</form>
<?php } else {
echo $msg;
} ?>
</body>
</html>
SIGABRT is, as stated in other answers, a general uncaught exception. You should definitely learn a little bit more about Objective-C. The problem is probably in your UITableViewDelegate method didSelectRowAtIndexPath.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
I can't tell you much more until you show us something of the code where you handle the table data source and delegate methods.
Count all td in table1:
console.log(_x000D_
table1.querySelectorAll("td").length_x000D_
)
_x000D_
<table id="table1">_x000D_
<tr>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
</tr>_x000D_
<table>
_x000D_
Count all td into each tr of table1.
table1.querySelectorAll("tr").forEach(function(e){_x000D_
console.log( e.querySelectorAll("td").length )_x000D_
})
_x000D_
<table id="table1">_x000D_
<tr>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
<td><input type="text" value="" /></td>_x000D_
</tr>_x000D_
<table>
_x000D_