Just to confirm: You are sure you are running MySQL 5.7, and not MySQL 5.6 or earlier version. And the plugin column contains "mysql_native_password". (Before MySQL 5.7, the password hash was stored in a column named password. Starting in MySQL 5.7, the password column is removed, and the password has is stored in the authentication_string column.) And you've also verified the contents of authentication string matches the return from PASSWORD('mysecret'). Also, is there a reason we are using DML against the mysql.user table instead of using the SET PASSWORD FOR syntax? – spencer7593
So Basically Just make sure that the Plugin Column contains "mysql_native_password".
Not my work but I read comments and noticed that this was stated as the answer but was not posted as a possible answer yet.
ROUND(time_to_sec((TIMEDIFF(NOW(), "2015-06-10 20:15:00"))) / 60);
You can try change your type connection to branch from ssh to https.
nano project_path/.git/config
[email protected]:username/repository.git
to https://[email protected]/username/repository_name.git
ctrl
+ o
After that you can try git pull
without publickey
The original checked
attribute (HTML 4 and before) did not require a value on it - if it existed, the element was "checked", if not, it wasn't.
This, however is not valid for XHTML that followed HTML 4.
The standard proposed to use checked="checked"
as a condition for true - so both ways you posted end up doing the same thing.
It really doesn't matter which one you use - use the one that makes most sense to you and stick to it (or agree with your team which way to go).
Just to say one thing, WindowsAPICodePack
can not open CommonOpenFileDialog
on Windows 7 6.1.7600.
It will be better for you to write your code like this.
In your Controller Write this code.
function new_blank_order_summary() {
$query = $this->sales_model->order_summary_insert();
if($query) {
$this->load->view('sales/new_blank_order_summary');
} else {
$this->load->view('sales/data_insertion_failed');
}
}
and in your Model
function order_summary_insert() {
$orderLines = trim(xss_clean($this->input->post('orderlines')));
$customerName = trim(xss_clean($this->input->post('customer')));
$data = array(
'OrderLines'=>$orderLines,
'CustomerName'=>$customerName
);
$this->db->insert('Customer_Orders',$data);
return ($this->db->affected_rows() != 1) ? false : true;
}
For me, align="center"
was enough to center FOO
vertically:
<v-row align="center">
<v-col>FOO</v-col>
</row>
For questions like this, it is always worth taking a look in the manual first. Date and time functions in the mySQL manual
CURDATE()
returns the DATE part of the current time. Manual on CURDATE()
NOW()
returns the date and time portions as a timestamp in various formats, depending on how it was requested. Manual on NOW().
Almost all these answers assume the designer wants a solid color background. If the designer actually wants a photo as the background the only real solution at the moment is JavaScript like the jQuery Transify plugin mentioned elsewhere.
What we need to do is join the CSS working group discussion and make them give us a background-opacity attribute! It should work hand in hand with the multiple-backgrounds feature.
Because python checks in the directories in sequential order starting at the first directory in sys.path
list, till it find the .py
file it was looking for.
Ideally, the current directory or the directory of the script is the first always the first element in the list, unless you modify it, like you did. From documentation -
As initialized upon program startup, the first item of this list, path[0], is the directory containing the script that was used to invoke the Python interpreter. If the script directory is not available (e.g. if the interpreter is invoked interactively or if the script is read from standard input), path[0] is the empty string, which directs Python to search modules in the current directory first. Notice that the script directory is inserted before the entries inserted as a result of PYTHONPATH.
So, most probably, you had a .py
file with the same name as the module you were trying to import from, in the current directory (where the script was being run from).
Also, a thing to note about ImportError
s , lets say the import error says -
ImportError: No module named main
- it doesn't mean the main.py
is overwritten, no if that was overwritten we would not be having issues trying to read it. Its some module above this that got overwritten with a .py
or some other file.
Example -
My directory structure looks like -
- test
- shared
- __init__.py
- phtest.py
- testmain.py
Now From testmain.py
, I call from shared import phtest
, it works fine.
Now lets say I introduce a shared.py in test
directory` , example -
- test
- shared
- __init__.py
- phtest.py
- testmain.py
- shared.py
Now when I try to do from shared import phtest
from testmain.py
, I will get the error -
ImportError: cannot import name 'phtest'
As you can see above, the file that is causing the issue is shared.py
, not phtest.py
.
Html file (/index.html)
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Untitled Document</title>
<link rel="stylesheet" media="screen" href="assets/css/style.css" />
</head>
<body>
<h1>Background Image</h1>
</body>
</html>
Css file (/assets/css/style.css)
body{
background:url(../img/bg.jpg);
}
After reading through the above solutions, I used a CSS Grid solution.
<div class="title-stack">
<h1 class="title-stack__title">StackOverflow</h1>
<a href="#" class="title-stack__logo">
<img src="/images/stack-overflow.png" alt="Stack Overflow">
</a>
</div>
.title-stack {
display: grid;
}
.title-stack__title, .title-stack__logo {
grid-area: 1/1/1/1;
position: relative;
}
.title-stack__title {
z-index: 0;
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
}
When scanning closed port it becomes unresponsive for long time. It seems to be quicker when resolving fqdn to ip like:
[System.Net.Dns]::GetHostAddresses("www.msn.com").IPAddressToString
A protoype bean injected inside a singelton bean will behave like singelton untill expilictly called for creating a new instance by get bean.
context.getBean("Your Bean")
TreeViewItem tempItem = new TreeViewItem();
TreeViewItem tempItem1 = new TreeViewItem();
tempItem = (TreeViewItem) treeView1.Items.GetItemAt(0); // Selecting the first of the top level nodes
tempItem1 = (TreeViewItem)tempItem.Items.GetItemAt(0); // Selecting the first child of the first first level node
SelectedCategoryHeaderString = tempItem.Header.ToString(); // gets the header for the first top level node
SelectedCategoryHeaderString = tempItem1.Header.ToString(); // gets the header for the first child node of the first top level node
tempItem.IsExpanded = true; // will expand the first node
If you are doing this because you want more context in your search, you can do this:
cat BIG_FILE.txt | less
Doing a search in less
should highlight your search terms.
Or pipe the output to your favorite editor. One example:
cat BIG_FILE.txt | vim -
Then search/highlight/replace.
If you want to remove all instances of 4 without needing to know the index:
LINQ: (.NET Framework 3.5)
int[] numbers = { 1, 3, 4, 9, 2 };
int numToRemove = 4;
numbers = numbers.Where(val => val != numToRemove).ToArray();
Non-LINQ: (.NET Framework 2.0)
static bool isNotFour(int n)
{
return n != 4;
}
int[] numbers = { 1, 3, 4, 9, 2 };
numbers = Array.FindAll(numbers, isNotFour).ToArray();
If you want to remove just the first instance:
LINQ: (.NET Framework 3.5)
int[] numbers = { 1, 3, 4, 9, 2, 4 };
int numToRemove = 4;
int numIndex = Array.IndexOf(numbers, numToRemove);
numbers = numbers.Where((val, idx) => idx != numIndex).ToArray();
Non-LINQ: (.NET Framework 2.0)
int[] numbers = { 1, 3, 4, 9, 2, 4 };
int numToRemove = 4;
int numIdx = Array.IndexOf(numbers, numToRemove);
List<int> tmp = new List<int>(numbers);
tmp.RemoveAt(numIdx);
numbers = tmp.ToArray();
Edit: Just in case you hadn't already figured it out, as Malfist pointed out, you need to be targetting the .NET Framework 3.5 in order for the LINQ code examples to work. If you're targetting 2.0 you need to reference the Non-LINQ examples.
Here is what I do in an activity for buffered reading extend/modify to match your needs
BufferedReader reader = null;
try {
reader = new BufferedReader(
new InputStreamReader(getAssets().open("filename.txt")));
// do reading, usually loop until end of file reading
String mLine;
while ((mLine = reader.readLine()) != null) {
//process line
...
}
} catch (IOException e) {
//log the exception
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
//log the exception
}
}
}
EDIT : My answer is perhaps useless if your question is on how to do it outside of an activity. If your question is simply how to read a file from asset then the answer is above.
UPDATE :
To open a file specifying the type simply add the type in the InputStreamReader call as follow.
BufferedReader reader = null;
try {
reader = new BufferedReader(
new InputStreamReader(getAssets().open("filename.txt"), "UTF-8"));
// do reading, usually loop until end of file reading
String mLine;
while ((mLine = reader.readLine()) != null) {
//process line
...
}
} catch (IOException e) {
//log the exception
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
//log the exception
}
}
}
EDIT
As @Stan says in the comment, the code I am giving is not summing up lines. mLine
is replaced every pass. That's why I wrote //process line
. I assume the file contains some sort of data (i.e a contact list) and each line should be processed separately.
In case you simply want to load the file without any kind of processing you will have to sum up mLine
at each pass using StringBuilder()
and appending each pass.
ANOTHER EDIT
According to the comment of @Vincent I added the finally
block.
Also note that in Java 7 and upper you can use try-with-resources
to use the AutoCloseable
and Closeable
features of recent Java.
CONTEXT
In a comment @LunarWatcher points out that getAssets()
is a class
in context
. So, if you call it outside of an activity
you need to refer to it and pass the context instance to the activity.
ContextInstance.getAssets();
This is explained in the answer of @Maneesh. So if this is useful to you upvote his answer because that's him who pointed that out.
Mongoose and multiple database in single node.js project
use useDb to solve this issue
example
//product databse
const myDB = mongoose.connection.useDb('product');
module.exports = myDB.model("Snack", snackSchema);
//user databse
const myDB = mongoose.connection.useDb('user');
module.exports = myDB.model("User", userSchema);
THE CORRECT WAY IS :
UPDATE test1
INNER JOIN test2 ON (test1.id = test2.id)
SET test1.data = test2.data
As NSAttributedString
is primarily used with Core Text on iOS, you have to use CTParagraphStyle
instead of NSParagraphStyle
. There is no mutable variant.
For example:
CTTextAlignment alignment = kCTCenterTextAlignment;
CTParagraphStyleSetting alignmentSetting;
alignmentSetting.spec = kCTParagraphStyleSpecifierAlignment;
alignmentSetting.valueSize = sizeof(CTTextAlignment);
alignmentSetting.value = &alignment;
CTParagraphStyleSetting settings[1] = {alignmentSetting};
size_t settingsCount = 1;
CTParagraphStyleRef paragraphRef = CTParagraphStyleCreate(settings, settingsCount);
NSDictionary *attributes = @{(__bridge id)kCTParagraphStyleAttributeName : (__bridge id)paragraphRef};
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:@"Hello World" attributes:attributes];
It seems that this can't be done, not at least with current versions of IE (6 and 7).
IE supports form attribute accept-charset, but only if its value is 'utf-8'.
The solution is to modify server A to produce encoding 'ISO-8859-1' for page that contains the form.
I know this is a very old thread, but it is the top google search for this error, and none of the responses mention a common cause of the error.
Which is closing a file you've already closed.
If you're not paying attention and have two different functions close the same file, then the second one will generate this error.
I think the best solution, though not exactly the same as Eclipse/Netbeans, is to change the 'Optimize Imports' settings.
Under Preferences > Editor > General > Auto Import
Set Add unambiguous imports on the fly
Edit: Using this method, when there are ambiguous imports, IntelliJ will let you know, and you can then use Alt + Enter method outlined in the answer by Wuaner
I find that, almost always, the most appropriate Import is at the top of the list.
You can use the -as operator. If casting succeed you get back a number:
$numberAsString -as [int]
printf("\nmaximum of %d and %d is = %d",a,b,c);
Also, if you use Tortoise SVN you can do this:
<script>
jQuery(document).ready(function() {
jQuery("tr").click(function(){
alert("Click! "+ jQuery(this).find('td').html());
});
});
</script>
I have noticed that XMLSpy(at least 2011 version)needs a targetNameSpace defined if elementFormDefault="qualified" is used. Otherwise won't validate. And also won't generate xmls with namespace prefixes
I believe a short video showing all the details if you have Anaconda is the following for mac (it is very similar to windows users as well) just open Anaconda navigator and everything is just the same (almost!)
https://www.youtube.com/watch?v=gDzAm25CORk
Then go to jupyter notebook and code
!pip install tensorflow
Then
import tensorflow as tf
It work for me! :)
Status 422 seems most appropiate based on the spec.
The 422 (Unprocessable Entity) status code means the server understands the content type of the request entity (hence a 415(Unsupported Media Type) status code is inappropriate), and the syntax of the request entity is correct (thus a 400 (Bad Request) status code is inappropriate) but was unable to process the contained instructions. For example, this error condition may occur if an XML request body contains well-formed (i.e., syntactically correct), but semantically erroneous, XML instructions.
They state that malformed xml is an example of bad syntax (calling for a 400). A malformed query string seems analogous to this, so 400 doesn't seem appropriate for a well-formed query-string which is missing a param.
UPDATE @DavidV correctly points out that this spec is for WebDAV, not core HTTP. But some popular non-WebDAV APIs are using 422 anyway, for lack of a better status code (see this).
public void getImageFilePath(Context context, Uri uri) {
Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
String image_id = cursor.getString(0);
image_id = image_id.substring(image_id.lastIndexOf(":") + 1);
cursor.close();
cursor = context.getContentResolver().query(android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Images.Media._ID + " = ? ", new String[]{image_id}, null);
cursor.moveToFirst();
String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
cursor.close();
upLoadImageOrLogo(path);
}
Option 1 (via controller):
angular.controller('numCtrl', function($scope, $window) {
$scope.num = parseInt(num , 10);
}
Option 2 (via custom filter):
app.filter('num', function() {
return function(input) {
return parseInt(input, 10);
}
});
{{(num1 | num) + (num2 | num)}}
Option 3 (via expression):
Declare this first in your controller:
$scope.parseInt = parseInt;
Then:
{{parseInt(num1)+parseInt(num2)}}
Option 4 (from raina77ow)
{{(num1-0) + (num2-0)}}
If you're a minimalist like me. Say you only want to render a record with a list containing entries.
<div>
{data.map((record) => (
record.list.length > 0
? (<YourRenderComponent record={record} key={record.id} />)
: null
))}
</div>
One thing I wish to point out here, and that is, despite what the Apple engineers have stated in their own WWDC 2015 video here:
https://developer.apple.com/videos/play/wwdc2015/407/
Apple keeps changing their mind on the subject, which tells us that there is no single right answer to this question. To show that even Apple engineers are split on this subject, take a look at Apple's most recent sample code, and you'll see some people use weak, and some don't.
This Apple Pay example uses weak: https://developer.apple.com/library/ios/samplecode/Emporium/Listings/Emporium_ProductTableViewController_swift.html#//apple_ref/doc/uid/TP40016175-Emporium_ProductTableViewController_swift-DontLinkElementID_8
As does this picture-in-picture example: https://developer.apple.com/library/ios/samplecode/AVFoundationPiPPlayer/Listings/AVFoundationPiPPlayer_PlayerViewController_swift.html#//apple_ref/doc/uid/TP40016166-AVFoundationPiPPlayer_PlayerViewController_swift-DontLinkElementID_4
As does the Lister example: https://developer.apple.com/library/ios/samplecode/Lister/Listings/Lister_ListCell_swift.html#//apple_ref/doc/uid/TP40014701-Lister_ListCell_swift-DontLinkElementID_57
As does the Core Location example: https://developer.apple.com/library/ios/samplecode/PotLoc/Listings/Potloc_PotlocViewController_swift.html#//apple_ref/doc/uid/TP40016176-Potloc_PotlocViewController_swift-DontLinkElementID_6
As does the view controller previewing example: https://developer.apple.com/library/ios/samplecode/ViewControllerPreviews/Listings/Projects_PreviewUsingDelegate_PreviewUsingDelegate_DetailViewController_swift.html#//apple_ref/doc/uid/TP40016546-Projects_PreviewUsingDelegate_PreviewUsingDelegate_DetailViewController_swift-DontLinkElementID_5
As does the HomeKit example: https://developer.apple.com/library/ios/samplecode/HomeKitCatalog/Listings/HMCatalog_Homes_Action_Sets_ActionSetViewController_swift.html#//apple_ref/doc/uid/TP40015048-HMCatalog_Homes_Action_Sets_ActionSetViewController_swift-DontLinkElementID_23
All those are fully updated for iOS 9, and all use weak outlets. From this we learn that A. The issue is not as simple as some people make it out to be. B. Apple has changed their mind repeatedly, and C. You can use whatever makes you happy :)
Special thanks to Paul Hudson (author of www.hackingwithsift.com) who gave me the clarification, and references for this answer.
I hope this clarifies the subject a bit better!
Take care.
To read a file line by line (also for extreme big files) can be done by the following functions:
DDFileReader * reader = [[DDFileReader alloc] initWithFilePath:pathToMyFile];
NSString * line = nil;
while ((line = [reader readLine])) {
NSLog(@"read line: %@", line);
}
[reader release];
Or:
DDFileReader * reader = [[DDFileReader alloc] initWithFilePath:pathToMyFile];
[reader enumerateLinesUsingBlock:^(NSString * line, BOOL * stop) {
NSLog(@"read line: %@", line);
}];
[reader release];
The class DDFileReader that enables this is the following:
Interface File (.h):
@interface DDFileReader : NSObject {
NSString * filePath;
NSFileHandle * fileHandle;
unsigned long long currentOffset;
unsigned long long totalFileLength;
NSString * lineDelimiter;
NSUInteger chunkSize;
}
@property (nonatomic, copy) NSString * lineDelimiter;
@property (nonatomic) NSUInteger chunkSize;
- (id) initWithFilePath:(NSString *)aPath;
- (NSString *) readLine;
- (NSString *) readTrimmedLine;
#if NS_BLOCKS_AVAILABLE
- (void) enumerateLinesUsingBlock:(void(^)(NSString*, BOOL *))block;
#endif
@end
Implementation (.m)
#import "DDFileReader.h"
@interface NSData (DDAdditions)
- (NSRange) rangeOfData_dd:(NSData *)dataToFind;
@end
@implementation NSData (DDAdditions)
- (NSRange) rangeOfData_dd:(NSData *)dataToFind {
const void * bytes = [self bytes];
NSUInteger length = [self length];
const void * searchBytes = [dataToFind bytes];
NSUInteger searchLength = [dataToFind length];
NSUInteger searchIndex = 0;
NSRange foundRange = {NSNotFound, searchLength};
for (NSUInteger index = 0; index < length; index++) {
if (((char *)bytes)[index] == ((char *)searchBytes)[searchIndex]) {
//the current character matches
if (foundRange.location == NSNotFound) {
foundRange.location = index;
}
searchIndex++;
if (searchIndex >= searchLength) { return foundRange; }
} else {
searchIndex = 0;
foundRange.location = NSNotFound;
}
}
return foundRange;
}
@end
@implementation DDFileReader
@synthesize lineDelimiter, chunkSize;
- (id) initWithFilePath:(NSString *)aPath {
if (self = [super init]) {
fileHandle = [NSFileHandle fileHandleForReadingAtPath:aPath];
if (fileHandle == nil) {
[self release]; return nil;
}
lineDelimiter = [[NSString alloc] initWithString:@"\n"];
[fileHandle retain];
filePath = [aPath retain];
currentOffset = 0ULL;
chunkSize = 10;
[fileHandle seekToEndOfFile];
totalFileLength = [fileHandle offsetInFile];
//we don't need to seek back, since readLine will do that.
}
return self;
}
- (void) dealloc {
[fileHandle closeFile];
[fileHandle release], fileHandle = nil;
[filePath release], filePath = nil;
[lineDelimiter release], lineDelimiter = nil;
currentOffset = 0ULL;
[super dealloc];
}
- (NSString *) readLine {
if (currentOffset >= totalFileLength) { return nil; }
NSData * newLineData = [lineDelimiter dataUsingEncoding:NSUTF8StringEncoding];
[fileHandle seekToFileOffset:currentOffset];
NSMutableData * currentData = [[NSMutableData alloc] init];
BOOL shouldReadMore = YES;
NSAutoreleasePool * readPool = [[NSAutoreleasePool alloc] init];
while (shouldReadMore) {
if (currentOffset >= totalFileLength) { break; }
NSData * chunk = [fileHandle readDataOfLength:chunkSize];
NSRange newLineRange = [chunk rangeOfData_dd:newLineData];
if (newLineRange.location != NSNotFound) {
//include the length so we can include the delimiter in the string
chunk = [chunk subdataWithRange:NSMakeRange(0, newLineRange.location+[newLineData length])];
shouldReadMore = NO;
}
[currentData appendData:chunk];
currentOffset += [chunk length];
}
[readPool release];
NSString * line = [[NSString alloc] initWithData:currentData encoding:NSUTF8StringEncoding];
[currentData release];
return [line autorelease];
}
- (NSString *) readTrimmedLine {
return [[self readLine] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
#if NS_BLOCKS_AVAILABLE
- (void) enumerateLinesUsingBlock:(void(^)(NSString*, BOOL*))block {
NSString * line = nil;
BOOL stop = NO;
while (stop == NO && (line = [self readLine])) {
block(line, &stop);
}
}
#endif
@end
The class was done by Dave DeLong
or shorter
function sortBy(field) {_x000D_
return function(a, b) {_x000D_
return (a[field] > b[field]) - (a[field] < b[field])_x000D_
};_x000D_
}_x000D_
_x000D_
let myArray = [_x000D_
{tabid: 6237, url: 'https://reddit.com/r/znation'},_x000D_
{tabid: 8430, url: 'https://reddit.com/r/soccer'},_x000D_
{tabid: 1400, url: 'https://reddit.com/r/askreddit'},_x000D_
{tabid: 3620, url: 'https://reddit.com/r/tacobell'},_x000D_
{tabid: 5753, url: 'https://reddit.com/r/reddevils'},_x000D_
]_x000D_
_x000D_
myArray.sort(sortBy('url'));_x000D_
console.log(myArray);
_x000D_
Use the LayoutInflater
to create a view based on your layout template, and then inject it into the view where you need it.
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.your_layout, null);
// fill in any details dynamically here
TextView textView = (TextView) v.findViewById(R.id.a_text_view);
textView.setText("your text");
// insert into main view
ViewGroup insertPoint = (ViewGroup) findViewById(R.id.insert_point);
insertPoint.addView(v, 0, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
You may have to adjust the index where you want to insert the view.
Additionally, set the LayoutParams according to how you would like it to fit in the parent view. e.g. with FILL_PARENT
, or MATCH_PARENT
, etc.
i just successfully used:
>>> type(tstamp)
pandas.tslib.Timestamp
>>> newDt = tstamp.date()
>>> type(newDt)
datetime.date
One possible solution to this issue is ng-model
attribute is required to use that directive.
Hence adding in the 'ng-model' attribute can resolve the issue.
<input submit-required="true" ng-model="user.Name"></input>
A simple program shows how to use for loop to find sum of serveral integers.
#include <iostream>
using namespace std;
int main ()
{
int sum = 0;
int endnum = 2;
for(int i = 0; i<=endnum; i++){
sum += i;
}
cout<<sum;
}
You can overload the String prototype with a removePrefix function:
String.prototype.removePrefix = function (prefix) {
const hasPrefix = this.indexOf(prefix) === 0;
return hasPrefix ? this.substr(prefix.length) : this.toString();
};
usage:
const domain = "www.test.com".removePrefix("www."); // test.com
My problem was that I forgot to specify network alias in docker-compose.yml in php-fpm
networks:
- u-online
It is works well!
version: "3"
services:
php-fpm:
image: php:7.2-fpm
container_name: php-fpm
volumes:
- ./src:/var/www/basic/public_html
ports:
- 9000:9000
networks:
- u-online
nginx:
image: nginx:1.19.2
container_name: nginx
depends_on:
- php-fpm
ports:
- "80:8080"
- "443:443"
volumes:
- ./docker/data/etc/nginx/conf.d/default.conf:/etc/nginx/conf.d/default.conf
- ./docker/data/etc/nginx/nginx.conf:/etc/nginx/nginx.conf
- ./src:/var/www/basic/public_html
networks:
- u-online
#Docker Networks
networks:
u-online:
driver: bridge
if the zipcode field is not a required field then add null=True and blank=True, then run makemigrations and migrate command to successfully reflect the changes in the database.
Go to File->Settings->Project Settings->Project Interpreter->Python Interpreters
There will be a "+" sign on the right side. Navigate to your python binary, PyCharm will figure out the rest.
If you are using Talend MDM Server, the login is: login: admin password: talend
See more: http://wiki.glitchdata.com/index.php?title=TOS:_Accessing_the_Talend_MDM_Server
This differs from the default JBoss login of admin/admin The password setup file is also login-config.xml in this case.
Strings are immutable and cannot be altered once they have been created. Creating a password as a string will leave stray references to the password on the heap or on the String pool. Now if someone takes a heap dump of the Java process and carefully scans through he might be able to guess the passwords. Of course these non used strings will be garbage collected but that depends on when the GC kicks in.
On the other side char[] are mutable as soon as the authentication is done you can overwrite them with any character like all M's or backslashes. Now even if someone takes a heap dump he might not be able to get the passwords which are not currently in use. This gives you more control in the sense like clearing the Object content yourself vs waiting for the GC to do it.
The solutions above didn't really work in my case. I couldn't use ArgumentCaptor as the method was called several times and I needed to validate each one. A simple Matcher with "argThat" did the trick easily.
Custom Matcher
// custom matcher
private class PolygonMatcher extends ArgumentMatcher<PolygonOptions> {
private int fillColor;
public PolygonMatcher(int fillColor) {
this.fillColor = fillColor;
}
@Override
public boolean matches(Object argument) {
if (!(argument instanceof PolygonOptions)) return false;
PolygonOptions arg = (PolygonOptions)argument;
return Color.red(arg.getFillColor()) == Color.red(fillColor)
&& Color.green(arg.getFillColor()) == Color.green(fillColor)
&& Color.blue(arg.getFillColor()) == Color.blue(fillColor);
}
}
Test Runner
// do setup work setup
// 3 light green polygons
int green = getContext().getResources().getColor(R.color.dmb_rx_bucket1);
verify(map, times(3)).addPolygon(argThat(new PolygonMatcher(green)));
// 1 medium yellow polygons
int yellow = getContext().getResources().getColor(R.color.dmb_rx_bucket4);
verify(map, times(1)).addPolygon(argThat(new PolygonMatcher(yellow)));
// 3 red polygons
int orange = getContext().getResources().getColor(R.color.dmb_rx_bucket5);
verify(map, times(3)).addPolygon(argThat(new PolygonMatcher(orange)));
// 2 red polygons
int red = getContext().getResources().getColor(R.color.dmb_rx_bucket7);
verify(map, times(2)).addPolygon(argThat(new PolygonMatcher(red)));
Add bottom:100%
to your #menu:hover ul li:hover ul
rule
#menu:hover ul li:hover ul {
position: absolute;
margin-top: 1px;
font: 10px;
bottom: 100%; /* added this attribute */
}
Or better yet to prevent the submenus from having the same effect, just add this rule
#menu>ul>li:hover>ul {
bottom:100%;
}
source: http://jsfiddle.net/W5FWW/4/
And to get back the border you can add the following attribute
#menu>ul>li:hover>ul {
bottom:100%;
border-bottom: 1px solid transparent
}
For people who are still struggling with this error, it can also happen if you accidentally create a duplicate column with the same name. Remove duplicate columns like so:
df = df.loc[:,~df.columns.duplicated()]
Just as a addition. You can find the Catalina Paths in
->RUN->RUN CONFIGURATIONS->APACHE TOMCAT->ARGUMENTS
In the VM Arguments the Paths are listed and changeable
I had the same issue which was fixed following the instructions below
Test enabling “Access for less secure apps” (which just means the client/app doesn’t use OAuth 2.0 - https://oauth.net/2/) for the account you are trying to access. It's found in the account settings on the Security tab, Account permissions (not available to accounts with 2-step verification enabled): https://support.google.com/accounts/answer/6010255?hl=en
original link for the answer: https://support.google.com/mail/thread/5621336?msgid=6292199
A quick googling on "perl high resolution timers" gave a reference to Time::HiRes. Maybe that it what you want.
This almost worked for me.
<input type='radio' name='radioBtn'>
<input type='radio' name='radioBtn'>
<input type='radio' name='radioBtn'>
$(document).on("click", "input[name='radioBtn']", function(){
thisRadio = $(this);
if (thisRadio.hasClass("imChecked")) {
thisRadio.removeClass("imChecked");
thisRadio.prop('checked', false);
} else {
thisRadio.prop('checked', true);
thisRadio.addClass("imChecked");
};
})
But If I check a radio button, then check another and try to check the first one again I must do two clicks. This is because it has the class imChecked. I just needed to uncheck the other radio buttons before the verification.
Add this line makes it work:
$("input[name='radioBtn']").not(thisRadio).removeClass("imChecked");
<input type='radio' name='radioBtn'>
<input type='radio' name='radioBtn'>
<input type='radio' name='radioBtn'>
$(document).on("click", "input[name='radioBtn']", function(){
thisRadio = $(this);
$("input[name='radioBtn']").not(thisRadio).removeClass("imChecked");
if (thisRadio.hasClass("imChecked")) {
thisRadio.removeClass("imChecked");
thisRadio.prop('checked', false);
} else {
thisRadio.prop('checked', true);
thisRadio.addClass("imChecked");
};
})
import os
print os.getcwd() # Prints the current working directory
To set the working directory:
os.chdir('c:\\Users\\uname\\desktop\\python') # Provide the new path here
When dealing with conflicts, you have two options:
Now, let's consider the following Lost Update anomaly:
The Lost Update anomaly can happen in the Read Committed isolation level.
In the diagram above we can see that Alice believes she can withdraw 40 from her account
but does not realize that Bob has just changed the account balance, and now there are only 20 left in this account.
Pessimistic locking achieves this goal by taking a shared or read lock on the account so Bob is prevented from changing the account.
In the diagram above, both Alice and Bob will acquire a read lock on the account
table row that both users have read. The database acquires these locks on SQL Server when using Repeatable Read or Serializable.
Because both Alice and Bob have read the account
with the PK value of 1
, neither of them can change it until one user releases the read lock. This is because a write operation requires a write/exclusive lock acquisition, and shared/read locks prevent write/exclusive locks.
Only after Alice has committed her transaction and the read lock was released on the account
row, Bob UPDATE
will resume and apply the change. Until Alice releases the read lock, Bob's UPDATE blocks.
Optimistic Locking allows the conflict to occur but detects it upon applying Alice's UPDATE as the version has changed.
This time, we have an additional version
column. The version
column is incremented every time an UPDATE or DELETE is executed, and it is also used in the WHERE clause of the UPDATE and DELETE statements. For this to work, we need to issue the SELECT and read the current version
prior to executing the UPDATE or DELETE, as otherwise, we would not know what version value to pass to the WHERE clause or to increment.
Relational database systems have emerged in the late 70's early 80's when a client would, typically, connect to a mainframe via a terminal. That's why we still see database systems define terms such as SESSION setting.
Nowadays, over the Internet, we no longer execute reads and writes in the context of the same database transaction, and ACID is no longer sufficient.
For instance, consider the following use case:
Without optimistic locking, there is no way this Lost Update would have been caught even if the database transactions used Serializable. This is because reads and writes are executed in separate HTTP requests, hence on different database transactions.
So, optimistic locking can help you prevent Lost Updates even when using application-level transactions that incorporate the user-think time as well.
Optimistic locking is a very useful technique, and it works just fine even when using less-strict isolation levels, like Read Committed, or when reads and writes are executed in subsequent database transactions.
The downside of optimistic locking is that a rollback will be triggered by the data access framework upon catching an OptimisticLockException
, therefore losing all the work we've done previously by the currently executing transaction.
The more contention, the more conflicts, and the greater the chance of aborting transactions. Rollbacks can be costly for the database system as it needs to revert all current pending changes which might involve both table rows and index records.
For this reason, pessimistic locking might be more suitable when conflicts happen frequently, as it reduces the chance of rolling back transactions.
The golden ration "phi" ^ n / sqrt(5) is asymptotic to the fibonacci of n, if we round that value up, we indeed get the fibonacci value.
function fib(n) {
let phi = (1 + Math.sqrt(5))/2;
let asymp = Math.pow(phi, n) / Math.sqrt(5);
return Math.round(asymp);
}
fib(1000); // 4.346655768693734e+208 in just 0.62s
This runs faster on large numbers compared to the recursion based solutions.
Steps to comment / uncommented
Press alt + f11/ Developer tab visual basic editor view tab - toolbar - edit - comments.
Easiest
eval(myvar)(parameter1, parameter2)
You don't have a function "pointer". You have a function "name".
While this works well, you will have a large number of folks telling you it's "insecure" or a "security risk".
Suppose there's a file test.txt
in Root Folder, and want to move it to \TxtFolder
,
You can try
move %~dp0\test.txt %~dp0\TxtFolder
.
reference answer: relative path in BAT script
You try this.
I have already tried it in my django template.
It will work fine. Just remove the curly braces pair {{ and }} from {{source}}.
I have also added <table> tag and that's it.
After modification your code will look something like below.
{% for source in sources %}
<table>
<tr>
<td>{{ source }}</td>
<td>
{% if title == source %}
Just now!
{% endif %}
</td>
</tr>
</table>
{% endfor %}
My dictionary looks like below,
{'title':"Rishikesh", 'sources':["Hemkesh", "Malinikesh", "Rishikesh", "Sandeep", "Darshan", "Veeru", "Shwetabh"]}
and OUTPUT looked like below once my template got rendered.
Hemkesh
Malinikesh
Rishikesh Just now!
Sandeep
Darshan
Veeru
Shwetabh
If you want to save memory and want to obtain each row as a json object, then you can use fast-csv
to create readstream and can read each row as a json object as follows:
const csv = require('fast-csv');
const AWS = require('aws-sdk');
const credentials = new AWS.Credentials("ACCESSKEY", "SECRETEKEY", "SESSIONTOKEN");
AWS.config.update({
credentials: credentials, // credentials required for local execution
region: 'your_region'
});
const dynamoS3Bucket = new AWS.S3();
const stream = dynamoS3Bucket.getObject({ Bucket: 'your_bucket', Key: 'example.csv' }).createReadStream();
var parser = csv.fromStream(stream, { headers: true }).on("data", function (data) {
parser.pause(); //can pause reading using this at a particular row
parser.resume(); // to continue reading
console.log(data);
}).on("end", function () {
console.log('process finished');
});
maybe you have code like this before the jquery:
var $jq=jQuery.noConflict();
$jq('ul.menu').lavaLamp({
fx: "backout",
speed: 700
});
and them was Conflict
you can change $ to (jQuery)
[Using Rails 5]
Generate migration:
rails generate migration add_user_reference_to_uploads user:references
This will create the migration file:
class AddUserReferenceToUploads < ActiveRecord::Migration[5.1]
def change
add_reference :uploads, :user, foreign_key: true
end
end
Now if you observe the schema file, you will see that the uploads table contains a new field. Something like: t.bigint "user_id"
or t.integer "user_id"
.
Migrate database:
rails db:migrate
You can use the array_key_exists()
built-in function:
if (array_key_exists('id', $_GET)) {
echo $_GET['id'];
}
or the isset()
built-in function:
if (isset($_GET['id'])) {
echo $_GET['id'];
}
Here is a solution with shell parameter expansion that replaces multiple contiguous occurrences with a single _
:
$ var=AxxBCyyyDEFzzLMN
$ echo "${var//+([xyz])/_}"
A_BC_DEF_LMN
Notice that the +(pattern)
pattern requires extended pattern matching, turned on with
shopt -s extglob
Alternatively, with the -s
("squeeze") option of tr
:
$ tr -s xyz _ <<< "$var"
A_BC_DEF_LMN
Open a viewcontroller with SWRevealViewController From App delegate.
self.window = UIWindow(frame: UIScreen.main.bounds)
let storyboard = UIStoryboard(name: "StoryboardName", bundle: nil)
let swrevealviewcontroller:SWRevealViewController = storyboard.instantiateInitialViewController() as! SWRevealViewController
self.window?.rootViewController = swrevealviewcontroller
self.window?.makeKeyAndVisible()
If iframe's source is an external domain, browsers will hide the iframe contents (Same Origin Policy). A workaround is saving the external contents in a file, for example (in PHP):
<?php
$contents = file_get_contents($external_url);
$res = file_put_contents($filename, $contents);
?>
then, get the new file content (string) and parse it to html, for example (in jquery):
$.get(file_url, function(string){
var html = $.parseHTML(string);
var contents = $(html).contents();
},'html');
Adding to @Luca Davanzo
iOS 11, some permissions settings have moved to the app path:
iOS 11 Support
static func open(_ preferenceType: PreferenceType) throws {
var preferencePath: String
if #available(iOS 11.0, *), preferenceType == .video || preferenceType == .locationServices || preferenceType == .photos {
preferencePath = UIApplicationOpenSettingsURLString
} else {
preferencePath = "\(PreferencesExplorer.preferencePath)=\(preferenceType.rawValue)"
}
if let url = URL(string: preferencePath) {
if #available(iOS 10.0, *) {
UIApplication.shared.open(url, options: [:], completionHandler: nil)
} else {
UIApplication.shared.openURL(url)
}
} else {
throw PreferenceExplorerError.notFound(preferencePath)
}
}
I used xs2bush's method of getting an interval (using timeIntervalSinceDate
) and expanded on it a little bit. I wanted to make sure that I was getting the required accuracy that I needed and also that I was not running down the battery by keeping the gps radio on more than necessary.
I keep location running continuously with the following settings:
locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers;
locationManager.distanceFilter = 5;
this is a relatively low drain on the battery. When I'm ready to get my next periodic location reading, I first check to see if the location is within my desired accuracy, if it is, I then use the location. If it's not, then I increase the accuracy with this:
locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
locationManager.distanceFilter = 0;
get my location and then once I have the location I turn the accuracy back down again to minimize the drain on the battery. I have written a full working sample of this and also I have written the source for the server side code to collect the location data, store it to a database and allow users to view gps data in real time or retrieve and view previously stored routes. I have clients for iOS, android, windows phone and java me. All clients are natively written and they all work properly in the background. The project is MIT licensed.
The iOS project is targeted for iOS 6 using a base SDK of iOS 7. You can get the code here.
Please file an issue on github if you see any problems with it. Thanks.
Just Try this:
def __str__(self):
return f'Memo={self.memo}, Tag={self.tags}'
Another option would be to go with:
nmap <C-d> mzyyp`z
gives you the advantage of preserving the cursor position.
var map:Map[String, String] = Map()
var map1 = map + ("red" -> "#FF0000")
println(map1)
<?php
$variable1 = "foo";
$variable2 = "bar";
header('Location: http://linkhere.com?fieldname1=$variable1&fieldname2=$variable2&fieldname3=$variable3);
?>
This works without any quotations.
If the file is in your parent folder, eg. follower.txt, you can simply use open('../follower.txt', 'r').read()
Gives the Max Count of record in table
select max(len(Description))from Table_Name
Gives Record Having Greater Count
select Description from Table_Name group by Description having max(len(Description)) >27
Hope helps someone.
There IS A POINT in introducing MAX_FILE_SIZE client side hidden form field.
php.ini can limit uploaded file size. So, while your script honors the limit imposed by php.ini, different HTML forms can further limit an uploaded file size. So, when uploading video, form may limit* maximum size to 10MB, and while uploading photos, forms may put a limit of just 1mb. And at the same time, the maximum limit can be set in php.ini to suppose 10mb to allow all this.
Although this is not a fool proof way of telling the server what to do, yet it can be helpful.
Hope it helped someone.
When you extract a single row from a data frame you get a one-row data frame. Convert it to a numeric vector:
as.numeric(df[1,])
As @Roland suggests, unlist(df[1,])
will convert the one-row data frame to a numeric vector without dropping the names. Therefore unname(unlist(df[1,]))
is another, slightly more explicit way to get to the same result.
As @Josh comments below, if you have a not-completely-numeric (alphabetic, factor, mixed ...) data frame, you need as.character(df[1,])
instead.
I got this on Firefox (FF58). I fixed this with:
dom.moduleScripts.enabled
in about:config
Source: Import page on mozilla (See Browser compatibility)
type="module"
to your script tag where you import the js file<script type="module" src="appthatimports.js"></script>
./
, /
, ../
or http://
before)import * from "./mylib.js"
For more examples, this blog post is good.
You don't want Boost lexical_cast for string <-> floating point anyway. That subset of use cases is the only set for which boost consistently is worse than the older functions- and they basically concentrated all their failure there, because their own performance results show a 20-25X SLOWER performance than using sscanf and printf for such conversions.
Google it yourself. boost::lexical_cast can handle something like 50 conversions and if you exclude the ones involving floating point #s its as good or better as the obvious alternatives (with the added advantage of being having a single API for all those operations). But bring in floats and its like the Titanic hitting an iceberg in terms of performance.
The old, dedicated str->double functions can all do 10000 parses in something like 30 ms (or better). lexical_cast takes something like 650 ms to do the same job.
put your CA & root certificate in /usr/share/ca-certificate or /usr/local/share/ca-certificate. Then
dpkg-reconfigure ca-certificates
or even reinstall ca-certificate package with apt-get.
After doing this your certificate is collected into system's DB: /etc/ssl/certs/ca-certificates.crt
Then everything should be fine.
Use Json
class instead of Content
as shown following:
// When I want to return an error:
if (!isFileSupported)
{
Response.StatusCode = (int) HttpStatusCode.BadRequest;
return Json("The attached file is not supported", MediaTypeNames.Text.Plain);
}
else
{
// When I want to return sucess:
Response.StatusCode = (int)HttpStatusCode.OK;
return Json("Message sent!", MediaTypeNames.Text.Plain);
}
Also set contentType:
contentType: 'application/json; charset=utf-8',
If you are using transition
instead of transform
, -webkit-backface-visibility: hidden;
does not work. A jagged edge appears during animation for a transparent png file.
To solve it I used: outline: 1px solid transparent;
I would handle it in the KeyDown event.
void TextBox_KeyDown(object sender, KeyEventArgs e)
{
char c = Convert.ToChar(e.PlatformKeyCode);
if (!char.IsDigit(c))
{
e.Handled = true;
}
}
Andrea solution is absolutely right, I will just write another implementation based on the same idea. If you took a look at the THREE.ImageUtils.loadTexture() source you will find it uses the javascript Image object. The $(window).load event is fired after all Images are loaded ! so at that event we can render our scene with the textures already loaded...
CoffeeScript
$(document).ready ->
material = new THREE.MeshLambertMaterial(map: THREE.ImageUtils.loadTexture("crate.gif"))
sphere = new THREE.Mesh(new THREE.SphereGeometry(radius, segments, rings), material)
$(window).load ->
renderer.render scene, camera
JavaScript
$(document).ready(function() {
material = new THREE.MeshLambertMaterial({ map: THREE.ImageUtils.loadTexture("crate.gif") });
sphere = new THREE.Mesh(new THREE.SphereGeometry(radius, segments, rings), material);
$(window).load(function() {
renderer.render(scene, camera);
});
});
Thanks...
I think you can achieve what you are looking for by combining number 1 with calling a function like in number 3.
You don't want to execute scripts on page load and prefer to call a function later on? Fine, just create a function that returns the value you would have set in a variable:
function getContextPath() {
return "<%=request.getContextPath()%>";
}
It's a function so it wont be executed until you actually call it, but it returns the value directly, without a need to do DOM traversals or tinkering with URLs.
At this point I agree with @BalusC to use EL:
function getContextPath() {
return "${pageContext.request.contextPath}";
}
or depending on the version of JSP fallback to JSTL:
function getContextPath() {
return "<c:out value="${pageContext.request.contextPath}" />";
}
You can use these methods to get an empty guid. The result will be a guid with all it's digits being 0's - "00000000-0000-0000-0000-000000000000
".
new Guid()
default(Guid)
Guid.Empty
I resolved it using this code to WebApiConfig.cs file
var json = config.Formatters.JsonFormatter;
json.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.Objects;
config.Formatters.Remove(config.Formatters.XmlFormatter);
From Wikipedia:
The final '==' sequence indicates that the last group contained only one byte, and '=' indicates that it contained two bytes.
Thus, this is some sort of padding.
You can use SSH and SFTP as suggested here.
sftp -P 2222 [email protected]
; if you prefer a graphical interface, you can use FileZillaReplace user
and 10.0.2.15
with the appropriate values relevant to your configuration.
We found out we had an issue with the solution from @mattdlockyer (thanks for the solution!). When using the selector property for the popover constructor like this...
$(document.body').popover({selector: '[data-toggle=popover]'});
...the proposed solution for BS3 won't work. Instead it creates a second popover instance local to its $(this)
. Here is our solution to prevent that:
$(document.body).on('click', function (e) {
$('[data-toggle="popover"]').each(function () {
//the 'is' for buttons that trigger popups
//the 'has' for icons within a button that triggers a popup
if (!$(this).is(e.target) && $(this).has(e.target).length === 0 && $('.popover').has(e.target).length === 0) {
var bsPopover = $(this).data('bs.popover'); // Here's where the magic happens
if (bsPopover) bsPopover.hide();
}
});
});
As mentioned the $(this).popover('hide');
will create a second instance due to the delegated listener. The solution provided only hides popovers which are already instanciated.
I hope I could save you guys some time.
With PowerShell 5.1 (PackageManagement module)
Install-Package -Name MyPackage -Source (Get-Location).Path -Destination C:\outputdirectory
I know this is old but here is another one in a Linear Layout would be:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="35dp">
<TextView
android:id="@+id/lblExpenseCancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/cancel"
android:textColor="#404040"
android:layout_marginLeft="10dp"
android:textSize="20sp"
android:layout_marginTop="9dp" />
<Button
android:id="@+id/btnAddExpense"
android:layout_width="wrap_content"
android:layout_height="45dp"
android:background="@drawable/stitch_button"
android:layout_marginLeft="10dp"
android:text="@string/add"
android:layout_gravity="center_vertical|bottom|right|top"
android:layout_marginRight="15dp" />
Please note the layout_gravity as opposed to just gravity.
The select module helps you determine where the next useful input is.
However, you're almost always happier with separate threads. One does a blocking read the stdin, another does wherever it is you don't want blocked.
I have been looking for the same solution and this worked for me...add an inline css tag to control the width of the input.
For example:
<input type="number" min="1" max="5" style="width: 2em;">
Combined with the min and max attributes you can control the width of the input.
If you're going to do PHP in the command line, I recommend you install phpsh, a decent PHP shell. It's a lot more fun.
Anyway, the php
command offers two switches to execute code from the command line:
-r <code> Run PHP <code> without using script tags <?..?>
-R <code> Run PHP <code> for every input line
You can use php
's -r switch as such:
php -r 'echo function_exists("foo") ? "yes" : "no";'
The above PHP command above should output no
and returns 0
as you can see:
>>> php -r 'echo function_exists("foo") ? "yes" : "no";'
no
>>> echo $? # print the return value of the previous command
0
Another funny switch is php -a:
-a Run as interactive shell
It's sort of lame compared to phpsh, but if you don't want to install the awesome interactive shell for PHP made by Facebook to get tab completion, history, and so on, then use -a as such:
>>> php -a
Interactive shell
php > echo function_exists("foo") ? "yes" : "no";
no
php >
If it doesn't work on your box like on my boxes (tested on Ubuntu and Arch Linux), then probably your PHP setup is fuzzy or broken. If you run this command:
php -i | grep 'API'
You should see:
Server API => Command Line Interface
If you don't, this means that maybe another command will provides the CLI SAPI. Try php-cli; maybe it's a package or a command available in your OS.
If you do see that your php
command uses the CLI (command-line interface) SAPI (Server API), then run php -h | grep code
to find out which crazy switch - as this hasn't changed for year- allows to run code in your version/setup.
Another couple of examples, just to make sure it works on my boxes:
>>> php -r 'echo function_exists("sg_load") ? "yes" : "no";'
no
>>> php -r 'echo function_exists("print_r") ? "yes" : "no";'
yes
Also, note that it is possible that an extension is loaded in the CLI and not in the CGI or Apache SAPI. It is likely that several PHP SAPIs use different php.ini files, e.g., /etc/php/cli/php.ini
vs. /etc/php/cgi/php.ini
vs. /etc/php/apache/php.ini
on a Gentoo Linux box. Find out which ini file is used with php -i | grep ini
.
Try this:
echo mysql_result($result, 0);
This is enough because you are only fetching one field of one row.
In my view the main difference is who says if the tests succeed or fail.
A functional test tests that the system meets predefined requirements. It is carried out and checked by the people responsible for developing the system.
An acceptance test is signed off by the users. Ideally the users will say what they want to test but in practice it is likely to be a sunset of a functional test as users don't invest enough time. Note that this view is from the business users I deal with other sets of users e.g. aviation and other safety critical might well not have this difference,
find . -size +10000k -exec ls -sd {} +
If your version of find
won't accept the +
notation (which acts rather like xargs
does), then you might use (GNU find
and xargs
, so find
probably supports +
anyway):
find . -size +10000k -print0 | xargs -0 ls -sd
or you might replace the +
with \;
(and live with the relative inefficiency of this), or you might live with problems caused by spaces in names and use the portable:
find . -size +10000k -print | xargs ls -sd
The -d
on the ls
commands ensures that if a directory is ever found (unlikely, but...), then the directory information will be printed, not the files in the directory. And, if you're looking for files more than 1 MB (as a now-deleted comment suggested), you need to adjust the +10000k
to 1000k
or maybe +1024k
, or +2048
(for 512-byte blocks, the default unit for -size
). This will list the size and then the file name. You could avoid the need for -d
by adding -type f
to the find
command, of course.
df$Gene <- as.factor(df$Gene)
do.call(rbind, lapply(split(df,df$Gene), function(x) {return(x[which.max(x$Value),])}))
Just using base R
Use vim. ^-^ (gVim, to be precise)
You'll have it all (with some plugins).
Btw, snippetsEmu is a nice tool for coding with useful snippets (like in TextMate). You can use (or modify) a pre-made package or make your own.
Interpreted languages like Python and JavaScript benefit greatly from linting, as these languages don’t have a compiling phase to display errors before execution.
Linters are also useful for code formatting and/or adhering to language specific best practices.
Lately I have been using ESLint for JS/React and will occasionally use it with an airbnb-config file.
viewNoteDateMonth.text = [[displayDate objectAtIndex:2] uppercaseString];
You can also use lowercaseString and capitalizedString
From Terminal: (You need to enter the following three lines)
$ git credential-osxkeychain erase ?
host=github.com ?
protocol=https ?
?
?
NOTE: after you enter “protocol=https” above you need to press ~~RETURN~~ TWICE (Each '?' is equivalent to a 'press enter/return' )
let course = {
name: 'Angular',
};
let newCourse= Object.assign({}, course);
newCourse.name= 'React';
console.log(course.name); // writes Angular
console.log(newCourse.name); // writes React
For Nested Object we can use of 3rd party libraries, for deep copying objects. In case of lodash, use _.cloneDeep()
let newCourse= _.cloneDeep(course);
I think a lot of times people get confused about the difference between dependency injection and a dependency injection framework (or a container as it is often called).
Dependency injection is a very simple concept. Instead of this code:
public class A {
private B b;
public A() {
this.b = new B(); // A *depends on* B
}
public void DoSomeStuff() {
// Do something with B here
}
}
public static void Main(string[] args) {
A a = new A();
a.DoSomeStuff();
}
you write code like this:
public class A {
private B b;
public A(B b) { // A now takes its dependencies as arguments
this.b = b; // look ma, no "new"!
}
public void DoSomeStuff() {
// Do something with B here
}
}
public static void Main(string[] args) {
B b = new B(); // B is constructed here instead
A a = new A(b);
a.DoSomeStuff();
}
And that's it. Seriously. This gives you a ton of advantages. Two important ones are the ability to control functionality from a central place (the Main()
function) instead of spreading it throughout your program, and the ability to more easily test each class in isolation (because you can pass mocks or other faked objects into its constructor instead of a real value).
The drawback, of course, is that you now have one mega-function that knows about all the classes used by your program. That's what DI frameworks can help with. But if you're having trouble understanding why this approach is valuable, I'd recommend starting with manual dependency injection first, so you can better appreciate what the various frameworks out there can do for you.
class MyMath
{
public dynamic Sum(dynamic x, dynamic y)
{
return (x+y);
}
}
class Demo
{
static void Main(string[] args)
{
MyMath d = new MyMath();
Console.WriteLine(d.Sum(23.2, 32.2));
}
}
These posts helped me get past a couple of issues I had creating a CLR Stored Procedure with Restful API call against Infor M3 API.
The XML Result from these API's look like this for my code below:
miResult xmlns="http://lawson.com/m3/miaccess">
<Program>MMS200MI</Program>
<Transaction>Get</Transaction>
<Metadata>...</Metadata>
<MIRecord>
<RowIndex>0</RowIndex>
<NameValue>
<Name>STAT</Name>
<Value>20</Value>
</NameValue>
<NameValue>
<Name>ITNO</Name>
<Value>ITEM123</Value>
</NameValue>
<NameValue>
<Name>ITDS</Name>
<Value>ITEM DESCRIPTION 123 </Value>
</NameValue>
...
The CLR C# Code to accomplish listing out the Resultset from the API works as shown below:
using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.IO;
using System.Net;
using System.Text;
using System.Xml;
using Microsoft.SqlServer.Server;
public partial class StoredProcedures
{
[Microsoft.SqlServer.Server.SqlProcedure]
public static void CallM3API_Test1()
{
SqlPipe pipe_msg = SqlContext.Pipe;
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://M3Server.domain.com:12345/m3api-rest/execute/MMS200MI/Get?ITNO=ITEM123");
request.Method = "Get";
request.ContentLength = 0;
request.Credentials = new NetworkCredential("[email protected]", "MyPassword");
request.ContentType = "application/xml";
request.Accept = "application/xml";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (Stream receiveStream = response.GetResponseStream())
{
using (StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8))
{
string strContent = readStream.ReadToEnd();
XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(strContent);
try
{
SqlPipe pipe = SqlContext.Pipe;
//Define Output Columns and Max Length of each Column in the Resultset
SqlMetaData[] cols = new SqlMetaData[2];
cols[0] = new SqlMetaData("Name", SqlDbType.NVarChar, 50);
cols[1] = new SqlMetaData("Value", SqlDbType.NVarChar, 120);
SqlDataRecord record = new SqlDataRecord(cols);
pipe.SendResultsStart(record);
XmlNodeList nodeList = xdoc.GetElementsByTagName("NameValue");
//List ALL Output Names + Values
foreach (XmlNode nodeRes in nodeList)
{
record.SetSqlString(0, nodeRes["Name"].InnerText);
record.SetSqlString(1, nodeRes["Value"].InnerText);
pipe.SendResultsRow(record);
}
pipe.SendResultsEnd();
}
catch (Exception ex)
{
SqlContext.Pipe.Send("Error (readStream): " + ex.Message);
}
}
}
}
}
catch (Exception ex)
{
SqlContext.Pipe.Send("Error (CallM3API_Test1): " + ex.Message);
}
}
}
Hopefully this provides helpful.
Something quick and dirty:
<script type='text/javascript'>
function del_tr(remtr)
{
while((remtr.nodeName.toLowerCase())!='tr')
remtr = remtr.parentNode;
remtr.parentNode.removeChild(remtr);
}
function del_id(id)
{
del_tr(document.getElementById(id));
}
</script>
if you place
<a href='' onclick='del_tr(this);return false;'>x</a>
anywhere within the row you want to delete, than its even working without any ids
I think you want to write text in an oval or circle? why not this one?
<span style="border-radius:50%; border:solid black 1px;padding:5px">Hello</span>
_x000D_
Make sure you switch the SHELL first:
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
RUN [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
RUN Invoke-WebRequest -UseBasicParsing -Uri 'https://github.com/git-for-windows/git/releases/download/v2.25.1.windows.1/Git-2.25.1-64-bit.exe' -OutFile 'outfile.exe'
Just to clarify what yalestar said, this will give you the relative path:
Workbooks.Open FileName:= ThisWorkbook.Path & "\TRICATEndurance Summary.html"
This will also work.
@Bean
CommandLineRunner init (StudentRepo studentRepo){
return args -> {
// Adding two students objects
List<String> names = Arrays.asList("udara", "sampath");
names.forEach(name -> studentRepo.save(new Student(name)));
};
}
As far as I know there is no native WPF function to get dimensions of the current monitor. Instead you could PInvoke native multiple display monitors functions, wrap them in managed class and expose all properties you need to consume them from XAML.
I think you can simplify this by just adding the necessary CSS properties to your special scrollable menu class..
CSS:
.scrollable-menu {
height: auto;
max-height: 200px;
overflow-x: hidden;
}
HTML
<ul class="dropdown-menu scrollable-menu" role="menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li><a href="#">Action</a></li>
..
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
</ul>
Working example: https://www.bootply.com/86116
Bootstrap 4
You can use WhiteNoise to serve static files in production.
Install:
pip install WhiteNoise==2.0.6
And change your wsgi.py file to this:
from django.core.wsgi import get_wsgi_application
from whitenoise.django import DjangoWhiteNoise
application = get_wsgi_application()
application = DjangoWhiteNoise(application)
And you're good to go!
Credit to Handlebar Creative Blog.
BUT, it's really not recommended serving static files this way in production. Your production web server(like nginx) should take care of that.
When you get a connection to PostgreSQL
it is always to a particular database. To access a different database, you must get a new connection.
Using \c
in psql closes the old connection and acquires a new one, using the specified database and/or credentials. You get a whole new back-end process and everything.
It's usually the code. Here's a simple example:
import java.util.*;
public class GarbageCollector {
public static void main(String... args) {
System.out.printf("Testing...%n");
List<Double> list = new ArrayList<Double>();
for (int outer = 0; outer < 10000; outer++) {
// list = new ArrayList<Double>(10000); // BAD
// list = new ArrayList<Double>(); // WORSE
list.clear(); // BETTER
for (int inner = 0; inner < 10000; inner++) {
list.add(Math.random());
}
if (outer % 1000 == 0) {
System.out.printf("Outer loop at %d%n", outer);
}
}
System.out.printf("Done.%n");
}
}
Using Java 1.6.0_24-b07 on a Windows 7 32 bit.
java -Xloggc:gc.log GarbageCollector
Then look at gc.log
Now granted, this is not the best test or the best design but when faced with a situation where you have no choice but implementing such a loop or when dealing with existing code that behaves badly, choosing to reuse objects instead of creating new ones can reduce the number of times the garbage collector gets in the way...
An even cleaner way is to just comment out variable names:
int main(int /* argc */, char const** /* argv */) {
return 0;
}
Seems bundler can't use .gem files out of the box. Pointing the :path to a directory containing .gem files doesn't work. Some people suggested to setup a local gem server (geminabox, stickler) for that purpose.
However, what I found to be much simpler is to use a local gem "server" from file system: Just put your .gem files in a local directory, then use "gem generate_index" to make it a Gem repository
mkdir repo
mkdir repo/gems
cp *.gem repo/gems
cd repo
gem generate_index
Finally point bundler to this location by adding the following line to your Gemfile
source "file://path/to/repo"
If you update the gems in the repository, make sure to regenerate the index.
The Error is here
lastrow = wsPOR.Range("A" & Rows.Count).End(xlUp).Row + 1
wsPOR is a workbook and not a worksheet. If you are working with "Sheet1" of that workbook then try this
lastrow = wsPOR.Sheets("Sheet1").Range("A" & _
wsPOR.Sheets("Sheet1").Rows.Count).End(xlUp).Row + 1
Similarly
wsPOR.Range("A2:G" & lastrow).Select
should be
wsPOR.Sheets("Sheet1").Range("A2:G" & lastrow).Select
Add Following methods in ViewController.m file, its working properly
-(BOOL) canBecomeFirstResponder
{
/* Here, We want our view (not viewcontroller) as first responder
to receive shake event message */
return YES;
}
-(void) motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
if(event.subtype==UIEventSubtypeMotionShake)
{
// Code at shake event
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Motion" message:@"Phone Vibrate"delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
[alert show];
[alert release];
[self.view setBackgroundColor:[UIColor redColor]];
}
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[self becomeFirstResponder]; // View as first responder
}
For this purpose you need to match the location in your apache or any other service you are using
If you are using apache then in httpd.conf file.
<LocationMatch "/your_relative_path">
ProxyPass absolute_path_of_your_application/your_relative_path
ProxyPassReverse absolute_path_of_your_application/your_relative_path
</LocationMatch>
Another way to do something similar is with flexbox on a wrapper element, i.e.,
.row {_x000D_
display: flex;_x000D_
justify-content: space-between;_x000D_
}
_x000D_
<div class="row">_x000D_
<div>Left</div>_x000D_
<div>Right</div>_x000D_
</div>_x000D_
_x000D_
_x000D_
In brief
GET
for safe and
idempotent
requestsPOST
for neither safe nor idempotent
requestsIn details There is a proper place for each. Even if you don't follow RESTful principles, a lot can be gained from learning about REST and how a resource oriented approach works.
A RESTful application will
use GETs
for operations which are bothsafe and idempotent
.
A safe
operation is an operation which does not change the data
requested.
An idempotent
operation is one in which the result will be the same
no matter how many times you request it.
It stands to reason that, as GETs are used for safe operations they are automatically also idempotent. Typically a GET is used for retrieving a resource (a question and its associated answers on stack overflow for example) or collection of resources.
A RESTful app will use
PUTs
for operations which arenot safe but idempotent
.
I know the question was about GET and POST, but I'll return to POST in a second.
Typically a PUT is used for editing a resource (editing a question or an answer on stack overflow for example).
A
POST
would be used for any operation which isneither safe or idempotent
.
Typically a POST would be used to create a new resource for example creating a NEW SO question (though in some designs a PUT would be used for this also).
If you run the POST twice you would end up creating TWO new questions.
There's also a DELETE operation, but I'm guessing I can leave that there :)
Discussion
In practical terms modern web browsers typically only support GET and POST reliably (you can perform all of these operations via javascript calls, but in terms of entering data in forms and pressing submit you've generally got the two options). In a RESTful application the POST will often be overriden to provide the PUT and DELETE calls also.
But, even if you are not following RESTful principles, it can be useful to think in terms of using GET for retrieving / viewing information and POST for creating / editing information.
You should never use GET for an operation which alters data. If a search engine crawls a link to your evil op, or the client bookmarks it could spell big trouble.
Writing this piece of code fixed my problem:
requests.get(link, headers = {'User-agent': 'your bot 0.1'})
Sorry for the necro on this post, but I feel compelled to weigh in on a couple of things that do not seem to have been touched on.
First a foremost - when we find ourselves needing access to private members on a class during unit testing, it is generally a big, fat red flag that we've goofed in our strategic or tactical approach and have inadvertently violated the single responsibility principal by pushing behavior where it does not belong. Feeling the need to access methods that are really nothing more than an isolated subroutine of a construction procedure is one of the most common occurrences of this; however, it's kind of like your boss expecting you to show up for work ready-to-go and also having some perverse need to know what morning routine you went through to get you into that state...
The other most common instance of this happening is when you find yourself trying to test the proverbial "god class." It is a special kind of problem in and of itself, but suffers from the same basic issue with needing to know intimate details of a procedure - but that's getting off topic.
In this specific example, we've effectively assigned the responsibility of fully initializing the Bar object to the FooBar class's constructor. In object oriented programming, one of the core tenents is that the constructor is "sacred" and should be guarded against invalid data that would invalidate its' own internal state and leave it primed to fail somewhere else downstream (in what could be a very deep pipeline.)
We've failed to do that here by allowing the FooBar object to accept a Bar that is not ready at the time that the FooBar is constructed, and have compensated by sort-of "hacking" the FooBar object to take matters into its' own hands.
This is the result of a failure to adhere to another tenent of object oriented programming (in the case of Bar,) which is that an object's state should be fully initialized and ready to handle any incoming calls to its' public members immediately after creation. Now, this does not mean immediately after the constructor is called in all instances. When you have an object that has many complex construction scenarios, then it is better to expose setters to its optional members to an object that is implemented in accordance with a creation design-pattern (Factory, Builder, etc...) In any of the latter cases, you would be pushing the initialization of the target object off into another object graph whose sole purpose is directing traffic to get you to a point where you have a valid instance of that which you are requesting - and the product should not be considered "ready" until after this creation object has served it up.
In your example, the Bar's "status" property does not seem to be in a valid state in which a FooBar can accept it - so the FooBar does something to it to correct that issue.
The second issue I am seeing is that it appears that you are trying to test your code rather than practice test-driven development. This is definitely my own opinion at this point in time; but, this type of testing is really an anti-pattern. What you end up doing is falling into the trap of realizing that you have core design problems that prevent your code from being testable after the fact, rather than writing the tests you need and subsequently programming to the tests. Either way you come at the problem, you should still end up with the same number of tests and lines of code had you truly achieved a SOLID implementation. So - why try and reverse engineer your way into testable code when you can just address the matter at the onset of your development efforts?
Had you done that, then you would have realized much earlier on that you were going to have to write some rather icky code in order to test against your design and would have had the opportunity early on to realign your approach by shifting behavior to implementations that are easily testable.
I use this code to format floats. It is based on toPrecision()
but it strips unnecessary zeros. I would welcome suggestions for how to simplify the regex.
function round(x, n) {
var exp = Math.pow(10, n);
return Math.floor(x*exp + 0.5)/exp;
}
Usage example:
function test(x, n, d) {
var rounded = rnd(x, d);
var result = rounded.toPrecision(n);
result = result.replace(/\.?0*$/, '');
result = result.replace(/\.?0*e/, 'e');
result = result.replace('e+', 'e');
return result;
}
document.write(test(1.2000e45, 3, 2) + '=' + '1.2e45' + '<br>');
document.write(test(1.2000e+45, 3, 2) + '=' + '1.2e45' + '<br>');
document.write(test(1.2340e45, 3, 2) + '=' + '1.23e45' + '<br>');
document.write(test(1.2350e45, 3, 2) + '=' + '1.24e45' + '<br>');
document.write(test(1.0000, 3, 2) + '=' + '1' + '<br>');
document.write(test(1.0100, 3, 2) + '=' + '1.01' + '<br>');
document.write(test(1.2340, 4, 2) + '=' + '1.23' + '<br>');
document.write(test(1.2350, 4, 2) + '=' + '1.24' + '<br>');
From a performance point of view, in python3.X
[i[0] for i in a]
and list(zip(*a))[0]
are equivalentlist(map(operator.itemgetter(0), a))
Code
import timeit
iterations = 100000
init_time = timeit.timeit('''a = [(i, u'abc') for i in range(1000)]''', number=iterations)/iterations
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = [i[0] for i in a]''', number=iterations)/iterations - init_time)
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = list(zip(*a))[0]''', number=iterations)/iterations - init_time)
output
3.491014136001468e-05
3.422205176000717e-05
If you're using Bootstrap it's also possible that Bootstrap's jQuery, if included below your jQuery script tag, is overwriting your jQuery script tag with another version. Including jQuery's own CDN and deleting the jQuery script tag that Bootstrap provides was the only thing that worked for me.
The error "Cannot read property 'map' of undefined"
will be encountered if there is an error in the "this.props.data"
or there is no props.data array.
Better put condition to check the the array like
if(this.props.data){
this.props.data.map(........)
.....
}
I tried the solution from Bill using $(document).ready... but at first it did not work. I discovered that if the script is placed after the html section, it will not work. If it is the head section it will work but only in IE. The script does not work in Firefox.
@K Scott Piel wrote a great answer here, but I want to add one important point.
Note that the stdout
stream is usually line-buffered, so to ensure the output is actually printed and not just left sitting in the buffer waiting to be written you must flush the buffer by either ending your printf
statement with a \n
Ex:
printf("hello world\n");
or
printf("hello world");
printf("\n");
or similar, OR you must call fflush(stdout);
after your printf
call.
Ex:
printf("hello world");
fflush(stdout);
Read more here: Why does printf not flush after the call unless a newline is in the format string?
You may want to look at IBExpert Personal Edition. While not open source, this is a very good tool for designing, building, and administering Firebird and InterBase databases.
The Personal Edition is free, but some of the more advanced features are not available. Still, even without the slick extras, the free version is very powerful.
Check empty input with removing space(if user enter space) from input using trim
$(document).ready(function(){
$('#button').click(function(){
if($.trim($('#fname').val()) == '')
{
$('#fname').css("border-color", "red");
alert("Empty");
}
});
});
From the horse's mouth: Explicit line joining
Two or more physical lines may be joined into logical lines using backslash characters (
\
), as follows: when a physical line ends in a backslash that is not part of a string literal or comment, it is joined with the following forming a single logical line, deleting the backslash and the following end-of-line character. For example:if 1900 < year < 2100 and 1 <= month <= 12 \ and 1 <= day <= 31 and 0 <= hour < 24 \ and 0 <= minute < 60 and 0 <= second < 60: # Looks like a valid date return 1
A line ending in a backslash cannot carry a comment. A backslash does not continue a comment. A backslash does not continue a token except for string literals (i.e., tokens other than string literals cannot be split across physical lines using a backslash). A backslash is illegal elsewhere on a line outside a string literal.
Follow these steps :
Thats All.
Parse it (i.e. with Integer#parseInt
) and simply catch the exception. =)
To clarify: The parseInt function checks if it can parse the number in any case (obviously) and if you want to parse it anyway, you are not going to take any performance hit by actually doing the parsing.
If you would not want to parse it (or parse it very, very rarely) you might wish to do it differently of course.
I had the same problem with a different and simple solution.
I installed PHP 5.6 following the accepted answer to this question on Ask Ubuntu. After using Virtualmin to switch a particular virtual server from PHP 5.5 to PHP 5.6, I received a 500 Internal Server Error and had the same entries in the apache error log:
[Tue Jul 03 16:15:22.131051 2018] [fcgid:warn] [pid 24262] (104)Connection reset by peer: [client 10.20.30.40:23700] mod_fcgid: error reading data from FastCGI server
[Tue Jul 03 16:15:22.131101 2018] [core:error] [pid 24262] [client 10.20.30.40:23700] End of script output before headers: index.php
Simple: I didn't install the php5.6-cgi
packet.
Installing the packet and reloading apache solved the problem:
sudo apt-get install php5.6-cgi
if you are using PHP 5.6
sudo apt-get install php5-cgi
if you are using a different PHP 5 version
sudo apt-get install php7.0-cgi
if you are using PHP 7
Then use service apache2 reload
to apply the configuration.
a = '123' if b else '456'
If your question is how can I determine how many clusters are appropriate for a kmeans analysis of my data?
, then here are some options. The wikipedia article on determining numbers of clusters has a good review of some of these methods.
First, some reproducible data (the data in the Q are... unclear to me):
n = 100
g = 6
set.seed(g)
d <- data.frame(x = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))),
y = unlist(lapply(1:g, function(i) rnorm(n/g, runif(1)*i^2))))
plot(d)
One. Look for a bend or elbow in the sum of squared error (SSE) scree plot. See http://www.statmethods.net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resulting plot suggests a suitable number of clusters for the kmeans:
mydata <- d
wss <- (nrow(mydata)-1)*sum(apply(mydata,2,var))
for (i in 2:15) wss[i] <- sum(kmeans(mydata,
centers=i)$withinss)
plot(1:15, wss, type="b", xlab="Number of Clusters",
ylab="Within groups sum of squares")
We might conclude that 4 clusters would be indicated by this method:
Two. You can do partitioning around medoids to estimate the number of clusters using the pamk
function in the fpc package.
library(fpc)
pamk.best <- pamk(d)
cat("number of clusters estimated by optimum average silhouette width:", pamk.best$nc, "\n")
plot(pam(d, pamk.best$nc))
# we could also do:
library(fpc)
asw <- numeric(20)
for (k in 2:20)
asw[[k]] <- pam(d, k) $ silinfo $ avg.width
k.best <- which.max(asw)
cat("silhouette-optimal number of clusters:", k.best, "\n")
# still 4
Three. Calinsky criterion: Another approach to diagnosing how many clusters suit the data. In this case we try 1 to 10 groups.
require(vegan)
fit <- cascadeKM(scale(d, center = TRUE, scale = TRUE), 1, 10, iter = 1000)
plot(fit, sortg = TRUE, grpmts.plot = TRUE)
calinski.best <- as.numeric(which.max(fit$results[2,]))
cat("Calinski criterion optimal number of clusters:", calinski.best, "\n")
# 5 clusters!
Four. Determine the optimal model and number of clusters according to the Bayesian Information Criterion for expectation-maximization, initialized by hierarchical clustering for parameterized Gaussian mixture models
# See http://www.jstatsoft.org/v18/i06/paper
# http://www.stat.washington.edu/research/reports/2006/tr504.pdf
#
library(mclust)
# Run the function to see how many clusters
# it finds to be optimal, set it to search for
# at least 1 model and up 20.
d_clust <- Mclust(as.matrix(d), G=1:20)
m.best <- dim(d_clust$z)[2]
cat("model-based optimal number of clusters:", m.best, "\n")
# 4 clusters
plot(d_clust)
Five. Affinity propagation (AP) clustering, see http://dx.doi.org/10.1126/science.1136800
library(apcluster)
d.apclus <- apcluster(negDistMat(r=2), d)
cat("affinity propogation optimal number of clusters:", length(d.apclus@clusters), "\n")
# 4
heatmap(d.apclus)
plot(d.apclus, d)
Six. Gap Statistic for Estimating the Number of Clusters. See also some code for a nice graphical output. Trying 2-10 clusters here:
library(cluster)
clusGap(d, kmeans, 10, B = 100, verbose = interactive())
Clustering k = 1,2,..., K.max (= 10): .. done
Bootstrapping, b = 1,2,..., B (= 100) [one "." per sample]:
.................................................. 50
.................................................. 100
Clustering Gap statistic ["clusGap"].
B=100 simulated reference sets, k = 1..10
--> Number of clusters (method 'firstSEmax', SE.factor=1): 4
logW E.logW gap SE.sim
[1,] 5.991701 5.970454 -0.0212471 0.04388506
[2,] 5.152666 5.367256 0.2145907 0.04057451
[3,] 4.557779 5.069601 0.5118225 0.03215540
[4,] 3.928959 4.880453 0.9514943 0.04630399
[5,] 3.789319 4.766903 0.9775842 0.04826191
[6,] 3.747539 4.670100 0.9225607 0.03898850
[7,] 3.582373 4.590136 1.0077628 0.04892236
[8,] 3.528791 4.509247 0.9804556 0.04701930
[9,] 3.442481 4.433200 0.9907197 0.04935647
[10,] 3.445291 4.369232 0.9239414 0.05055486
Here's the output from Edwin Chen's implementation of the gap statistic:
Seven. You may also find it useful to explore your data with clustergrams to visualize cluster assignment, see http://www.r-statistics.com/2010/06/clustergram-visualization-and-diagnostics-for-cluster-analysis-r-code/ for more details.
Eight. The NbClust package provides 30 indices to determine the number of clusters in a dataset.
library(NbClust)
nb <- NbClust(d, diss=NULL, distance = "euclidean",
method = "kmeans", min.nc=2, max.nc=15,
index = "alllong", alphaBeale = 0.1)
hist(nb$Best.nc[1,], breaks = max(na.omit(nb$Best.nc[1,])))
# Looks like 3 is the most frequently determined number of clusters
# and curiously, four clusters is not in the output at all!
If your question is how can I produce a dendrogram to visualize the results of my cluster analysis
, then you should start with these:
http://www.statmethods.net/advstats/cluster.html
http://www.r-tutor.com/gpu-computing/clustering/hierarchical-cluster-analysis
http://gastonsanchez.wordpress.com/2012/10/03/7-ways-to-plot-dendrograms-in-r/ And see here for more exotic methods: http://cran.r-project.org/web/views/Cluster.html
Here are a few examples:
d_dist <- dist(as.matrix(d)) # find distance matrix
plot(hclust(d_dist)) # apply hirarchical clustering and plot
# a Bayesian clustering method, good for high-dimension data, more details:
# http://vahid.probstat.ca/paper/2012-bclust.pdf
install.packages("bclust")
library(bclust)
x <- as.matrix(d)
d.bclus <- bclust(x, transformed.par = c(0, -50, log(16), 0, 0, 0))
viplot(imp(d.bclus)$var); plot(d.bclus); ditplot(d.bclus)
dptplot(d.bclus, scale = 20, horizbar.plot = TRUE,varimp = imp(d.bclus)$var, horizbar.distance = 0, dendrogram.lwd = 2)
# I just include the dendrogram here
Also for high-dimension data is the pvclust
library which calculates p-values for hierarchical clustering via multiscale bootstrap resampling. Here's the example from the documentation (wont work on such low dimensional data as in my example):
library(pvclust)
library(MASS)
data(Boston)
boston.pv <- pvclust(Boston)
plot(boston.pv)
Does any of that help?
Here is Apple's documentation:
It says there are two things that you must get right:
armv6
to the Architecture build settingsNo
.If this still doesn't help you, double check that you are really changing the architecture build settings for the right build configuration – I wasted half an hour fiddling with the wrong one and wondering why it didn't work...
Select Edit Scheme...
in the Product menu, click the "Archive" scheme in the left list and check the Build Configuration. Change the value if it was not what you expected.
When you just want to do a try catch without handling the exception, how do you do it in Python?
This will help you to print what the exception is:( i.e. try catch without handling the exception and print the exception.)
import sys
try:
doSomething()
except:
print "Unexpected error:", sys.exc_info()[0]
Given that I just lost a day trying to figure this out and actually found a solution with the help of a coworker, I thought I should chime in.
We have a large code base and we have to deal with 2 branch heavily being modified at the same time. There is a main branch and a secondary branch if you which.
While I merge the secondary branch into the main branch, work continues in the main branch and by the time i'm done, I can't push my changes because they are incompatible.
I therefore need to "rebase" my "merge".
This is how we finally did it :
1) make note of the SHA. ex.: c4a924d458ea0629c0d694f1b9e9576a3ecf506b
git log -1
2) Create the proper history but this will break the merge.
git rebase -s ours --preserve-merges origin/master
3) make note of the SHA. ex.: 29dd8101d78
git log -1
4) Now reset to where you were before
git reset c4a924d458ea0629c0d694f1b9e9576a3ecf506b --hard
5) Now merge the current master into your working branch
git merge origin/master
git mergetool
git commit -m"correct files
6) Now that you have the right files, but the wrong history, get the right history on top of your change with :
git reset 29dd8101d78 --soft
7) And then --amend the results in your original merge commit
git commit --amend
Voila!
Just use onChange event of the <select>
object.
Selected value is in e.target.value
then.
By the way, it's a bad practice to use id="..."
. It's better to use ref=">.."
http://facebook.github.io/react/docs/more-about-refs.html
It is true that the same-origin policy prevents JavaScript from making requests across domains, but the CORS specification allows just the sort of API access you are looking for, and is supported by the current batch of major browsers.
See how to enable cross-origin resource sharing for client and server:
"Cross-Origin Resource Sharing (CORS) is a specification that enables truly open access across domain-boundaries. If you serve public content, please consider using CORS to open it up for universal JavaScript/browser access."
You can fetch the list of tables and schemata by querying the SQLITE_MASTER table:
sqlite> .tab
job snmptarget t1 t2 t3
sqlite> select name from sqlite_master where type = 'table';
job
t1
t2
snmptarget
t3
sqlite> .schema job
CREATE TABLE job (
id INTEGER PRIMARY KEY,
data VARCHAR
);
sqlite> select sql from sqlite_master where type = 'table' and name = 'job';
CREATE TABLE job (
id INTEGER PRIMARY KEY,
data VARCHAR
)
I think the best that's possible in cross-browser JavaScript is window.print()
, which (in Firefox 3, for me) brings up the 'print' dialog and not the print preview dialog.
FYI, the print dialog is your computer's Print popup, what you get when you do Ctrl-p. The print preview is Firefox's own Preview window, and it has more options. It's what you get with Firefox Menu > Print...
Found my answer on https://developercommunity.visualstudio.com/content/problem/130597/unity-intellisense-not-working-after-creating-new-1.html
Usually you hear Task is a higher level concept than thread... and that's what this phrase means:
You can't use Abort/ThreadAbortedException, you should support
cancel event in your "business code" periodically testing token.IsCancellationRequested
flag (also avoid long or timeoutless connections e.g. to db, otherwise you will never get a chance to test this flag). By the similar reason Thread.Sleep(delay)
call should be replaced with Task.Delay(delay, token)
call (passing token inside to have possibility to interrupt delay).
There are no thread's Suspend
and Resume
methods functionality with tasks. Instance of task can't be reused either.
But you get two new tools:
a) continuations
// continuation with ContinueWhenAll - execute the delegate, when ALL
// tasks[] had been finished; other option is ContinueWhenAny
Task.Factory.ContinueWhenAll(
tasks,
() => {
int answer = tasks[0].Result + tasks[1].Result;
Console.WriteLine("The answer is {0}", answer);
}
);
b) nested/child tasks
//StartNew - starts task immediately, parent ends whith child
var parent = Task.Factory.StartNew
(() => {
var child = Task.Factory.StartNew(() =>
{
//...
});
},
TaskCreationOptions.AttachedToParent
);
So system thread is completely hidden from task, but still task's code is executed in the concrete system thread. System threads are resources for tasks and ofcourse there is still thread pool under the hood of task's parallel execution. There can be different strategies how thread get new tasks to execute. Another shared resource TaskScheduler cares about it. Some problems that TaskScheduler solves 1) prefer to execute task and its conitnuation in the same thread minimizing switching cost - aka inline execution) 2) prefer execute tasks in an order they were started - aka PreferFairness 3) more effective distribution of tasks between inactive threads depending on "prior knowledge of tasks activity" - aka Work Stealing. Important: in general "async" is not same as "parallel". Playing with TaskScheduler options you can setup async tasks be executed in one thread synchronously. To express parallel code execution higher abstractions (than Tasks) could be used: Parallel.ForEach
, PLINQ
, Dataflow
.
Tasks are integrated with C# async/await features aka Promise Model, e.g there requestButton.Clicked += async (o, e) => ProcessResponce(await client.RequestAsync(e.ResourceName));
the execution of client.RequestAsync
will not block UI thread. Important: under the hood Clicked
delegate call is absolutely regular (all threading is done by compiler).
That is enough to make a choice. If you need to support Cancel functionality of calling legacy API that tends to hang (e.g. timeoutless connection) and for this case supports Thread.Abort(), or if you are creating multithread background calculations and want to optimize switching between threads using Suspend/Resume, that means to manage parallel execution manually - stay with Thread. Otherwise go to Tasks because of they will give you easy manipulate on groups of them, are integrated into the language and make developers more productive - Task Parallel Library (TPL) .
You can also do this without VBA from the find/replace dialogue box. My answer was at https://stackoverflow.com/a/6116681/509840 .
If you are using GitHub Desktop
, then just do the following steps:
GitHub Desktop
and all other applications with open files to your current directory path.GitHub Desktop
and click on the blue (!) "repository not found" icon. Then a dialog will open and you will see a "Locate..." button which will open a popup allowing you to direct its path to a new location.Disclosure: I wrote the code that Trello uses; the code below is the actual source code Trello uses to accomplish the clipboard trick.
We don't actually "access the user's clipboard", instead we help the user out a bit by selecting something useful when they press Ctrl+C.
Sounds like you've figured it out; we take advantage of the fact that when you want to hit Ctrl+C, you have to hit the Ctrl key first. When the Ctrl key is pressed, we pop in a textarea that contains the text we want to end up on the clipboard, and select all the text in it, so the selection is all set when the C key is hit. (Then we hide the textarea when the Ctrl key comes up.)
Specifically, Trello does this:
TrelloClipboard = new class
constructor: ->
@value = ""
$(document).keydown (e) =>
# Only do this if there's something to be put on the clipboard, and it
# looks like they're starting a copy shortcut
if !@value || !(e.ctrlKey || e.metaKey)
return
if $(e.target).is("input:visible,textarea:visible")
return
# Abort if it looks like they've selected some text (maybe they're trying
# to copy out a bit of the description or something)
if window.getSelection?()?.toString()
return
if document.selection?.createRange().text
return
_.defer =>
$clipboardContainer = $("#clipboard-container")
$clipboardContainer.empty().show()
$("<textarea id='clipboard'></textarea>")
.val(@value)
.appendTo($clipboardContainer)
.focus()
.select()
$(document).keyup (e) ->
if $(e.target).is("#clipboard")
$("#clipboard-container").empty().hide()
set: (@value) ->
In the DOM we've got:
<div id="clipboard-container"><textarea id="clipboard"></textarea></div>
CSS for the clipboard stuff:
#clipboard-container {
position: fixed;
left: 0px;
top: 0px;
width: 0px;
height: 0px;
z-index: 100;
display: none;
opacity: 0;
}
#clipboard {
width: 1px;
height: 1px;
padding: 0px;
}
... and the CSS makes it so you can't actually see the textarea when it pops in ... but it's "visible" enough to copy from.
When you hover over a card, it calls
TrelloClipboard.set(cardUrl)
... so then the clipboard helper knows what to select when the Ctrl key is pressed.
This is a step I use with ubuntu. It will allow you to insert more than 45 characters from your input but MySQL will cut your text to 45 characters to insert into the database.
Run command
sudo nano /etc/mysql/my.cnf
Then paste this code
[mysqld] sql-mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
restart MySQL
sudo service mysql restart;
This works for me:
git fetch
git rebase --autostash FETCH_HEAD
This function extends the function from Gaten's answer a bit in order to get the element back:
$.fn.delayKeyup = function(callback, ms){
var timer = 0;
var el = $(this);
$(this).keyup(function(){
clearTimeout (timer);
timer = setTimeout(function(){
callback(el)
}, ms);
});
return $(this);
};
$('#input').delayKeyup(function(el){
//alert(el.val());
// Here I need the input element (value for ajax call) for further process
},1000);
CompressFormat is too slow...
Try ByteBuffer.
???Bitmap to byte???
width = bitmap.getWidth();
height = bitmap.getHeight();
int size = bitmap.getRowBytes() * bitmap.getHeight();
ByteBuffer byteBuffer = ByteBuffer.allocate(size);
bitmap.copyPixelsToBuffer(byteBuffer);
byteArray = byteBuffer.array();
???byte to bitmap???
Bitmap.Config configBmp = Bitmap.Config.valueOf(bitmap.getConfig().name());
Bitmap bitmap_tmp = Bitmap.createBitmap(width, height, configBmp);
ByteBuffer buffer = ByteBuffer.wrap(byteArray);
bitmap_tmp.copyPixelsFromBuffer(buffer);
python -m pip install notebook-as-pdf pyppeteer-install
You can also use it with nbconvert:
jupyter-nbconvert --to PDFviaHTML filename.ipynb
which will create a file called filename.pdf.
or pip install notebook-as-pdf
create pdf from notebook jupyter-nbconvert-toPDFviaHTML
When you run the code on windows machine, firewall prompts it to allow network access, allow the network access and it will work, if it does not prompts, go to firewall settings > allow an app through firewall and select your python.exe and allow network access.
On Python 3, non-destructively and iteratively:
next(iter(mydict.values()))
On Python 2, non-destructively and iteratively:
mydict.itervalues().next()
If you want it to work in both Python 2 and 3, you can use the six
package:
six.next(six.itervalues(mydict))
though at this point it is quite cryptic and I'd rather prefer your code.
If you want to remove any item, do:
key, value = mydict.popitem()
Note that "first" may not be an appropriate term here because dict
is not an ordered type in Python < 3.6. Python 3.6+ dicts
are ordered.
In my opinion, uniqueidentifier
/ GUID is neither a varchar
nor an nvarchar
but a char(36)
. Therefore I use:
CAST(xyz AS char(36))
Like that you can set DataTextField and DataValueField of DropDownList using "Key" and "Value" texts :
Dictionary<string, string> list = new Dictionary<string, string>();
list.Add("item 1", "Item 1");
list.Add("item 2", "Item 2");
list.Add("item 3", "Item 3");
list.Add("item 4", "Item 4");
ddl.DataSource = list;
ddl.DataTextField = "Value";
ddl.DataValueField = "Key";
ddl.DataBind();
You need to remove the static
from your accessor methods - these methods need to be instance methods and access the instance variables
public class IDCard {
public String name, fileName;
public int id;
public IDCard(final String name, final String fileName, final int id) {
this.name = name;
this.fileName = fileName
this.id = id;
}
public String getName() {
return name;
}
}
You can the create an IDCard
and use the accessor like this:
final IDCard card = new IDCard();
card.getName();
Each time you call new
a new instance of the IDCard
will be created and it will have it's own copies of the 3 variables.
If you use the static
keyword then those variables are common across every instance of IDCard
.
A couple of things to bear in mind:
name
not Name
.Just for completeness: Xlib - But it's somewhat slow when capturing the whole screen:
from Xlib import display, X
import Image #PIL
W,H = 200,200
dsp = display.Display()
try:
root = dsp.screen().root
raw = root.get_image(0, 0, W,H, X.ZPixmap, 0xffffffff)
image = Image.fromstring("RGB", (W, H), raw.data, "raw", "BGRX")
image.show()
finally:
dsp.close()
One could try to trow some types in the bottleneck-files in PyXlib, and then compile it using Cython. That could increase the speed a bit.
Edit: We can write the core of the function in C, and then use it in python from ctypes, here is something I hacked together:
#include <stdio.h>
#include <X11/X.h>
#include <X11/Xlib.h>
//Compile hint: gcc -shared -O3 -lX11 -fPIC -Wl,-soname,prtscn -o prtscn.so prtscn.c
void getScreen(const int, const int, const int, const int, unsigned char *);
void getScreen(const int xx,const int yy,const int W, const int H, /*out*/ unsigned char * data)
{
Display *display = XOpenDisplay(NULL);
Window root = DefaultRootWindow(display);
XImage *image = XGetImage(display,root, xx,yy, W,H, AllPlanes, ZPixmap);
unsigned long red_mask = image->red_mask;
unsigned long green_mask = image->green_mask;
unsigned long blue_mask = image->blue_mask;
int x, y;
int ii = 0;
for (y = 0; y < H; y++) {
for (x = 0; x < W; x++) {
unsigned long pixel = XGetPixel(image,x,y);
unsigned char blue = (pixel & blue_mask);
unsigned char green = (pixel & green_mask) >> 8;
unsigned char red = (pixel & red_mask) >> 16;
data[ii + 2] = blue;
data[ii + 1] = green;
data[ii + 0] = red;
ii += 3;
}
}
XDestroyImage(image);
XDestroyWindow(display, root);
XCloseDisplay(display);
}
And then the python-file:
import ctypes
import os
from PIL import Image
LibName = 'prtscn.so'
AbsLibPath = os.path.dirname(os.path.abspath(__file__)) + os.path.sep + LibName
grab = ctypes.CDLL(AbsLibPath)
def grab_screen(x1,y1,x2,y2):
w, h = x2-x1, y2-y1
size = w * h
objlength = size * 3
grab.getScreen.argtypes = []
result = (ctypes.c_ubyte*objlength)()
grab.getScreen(x1,y1, w, h, result)
return Image.frombuffer('RGB', (w, h), result, 'raw', 'RGB', 0, 1)
if __name__ == '__main__':
im = grab_screen(0,0,1440,900)
im.show()
If you don't want to use standard library functions, below is one solution.
#include <iostream>
#include <string>
bool CheckSubstring(std::string firstString, std::string secondString){
if(secondString.size() > firstString.size())
return false;
for (int i = 0; i < firstString.size(); i++){
int j = 0;
// If the first characters match
if(firstString[i] == secondString[j]){
int k = i;
while (firstString[i] == secondString[j] && j < secondString.size()){
j++;
i++;
}
if (j == secondString.size())
return true;
else // Re-initialize i to its original value
i = k;
}
}
return false;
}
int main(){
std::string firstString, secondString;
std::cout << "Enter first string:";
std::getline(std::cin, firstString);
std::cout << "Enter second string:";
std::getline(std::cin, secondString);
if(CheckSubstring(firstString, secondString))
std::cout << "Second string is a substring of the frist string.\n";
else
std::cout << "Second string is not a substring of the first string.\n";
return 0;
}
Uri is serializable, so you can save strings and convert it back when loading
when saving
String str = myUri.toString();
and when loading
Uri myUri = Uri.parse(str);
you need import requests
and use from json() method :
source = requests.get("url").json()
print(source)
Of course, this method also works:
import json,urllib.request
data = urllib.request.urlopen("url").read()
output = json.loads(data)
print (output)
json.loads
will decode it into a Python object using this table, for example a JSON object will become a Python dict
.
Try modifying the setup.py file by importing setup from setuptools instead of distutils.core
Using .format
from Python 2.6 and higher:
>>> print '{}{}{}{}'.format(*[7,7,7,7])
7777
>>> data = [7, 7, 7, 7] * 3
>>> print ('{}'*len(data)).format(*data)
777777777777777777777777
For Python 3:
>>> print(('{}'*len(data)).format(*data))
777777777777777777777777
For your last question, why ? I'll try to explain with what I know
A brief explanation of those three status codes in layman's terms.
If caching is enabled in the server
For some files browser is deciding to request from server and for some it's deciding to read from stored (cached) files. Why is this ? Every files has an expiry date, so
If a file is not expired then the browser will use from cache (200 cache).
If file is expired, browser requests server for a file. Server check file in both places (browser and server). If same file found, server refuses the request. As per protocol browser uses existing file.
look at this nginx configuration
location / {
add_header Cache-Control must-revalidate;
expires 60;
etag on;
...
}
Here the expiry is set to 60 seconds, so all static files are cached for 60 seconds. So if u request a file again within 60 seconds browser will read from memory (200 memory). If u request after 60 seconds browser will request server (304).
I assumed that the file is not changed after 60 seconds, in that case you would get 200 (ie, updated file will be fetched from server).
So, if the servers are configured with different expiring and caching headers (policies), the status may differ.
In your case you are using cdn, the main purpose of cdn is high availability and fast delivery. Therefore they use multiple servers. Even though it seems like files are in same directory, cdn might use multiple servers to provide u content, if those servers have different configurations. Then these status can change. Hope it helps.
jQuery .one()
should not be used with the click event but with the submit
event as described below.
$('input[type=submit]').one('submit', function() {
$(this).attr('disabled','disabled');
});
my solution:
create a file card_view_border.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="@color/white_background"/>
<stroke android:width="2dp"
android:color="@color/red" />
<corners android:radius="20dip"/>
</shape>
and set programmatically
cardView.setBackgroundResource(R.drawable.card_view_border);
You use an implicit operator that converts the string value to a struct value:
public struct MyStruct {
public string s;
public int length;
public static implicit operator MyStruct(string value) {
return new MyStruct() { s = value, length = value.Length };
}
}
Example:
MyStruct myStruct = "Lol";
Console.WriteLine(myStruct.s);
Console.WriteLine(myStruct.length);
Output:
Lol
3
I couldnt find a simple working example anywhere (as of Jan 19), so here is an updated version. I have chrome version 71.0.3578.98.
C# Websocket server :
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Security.Cryptography;
namespace WebSocketServer
{
class Program
{
static Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
static private string guid = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
static void Main(string[] args)
{
serverSocket.Bind(new IPEndPoint(IPAddress.Any, 8080));
serverSocket.Listen(1); //just one socket
serverSocket.BeginAccept(null, 0, OnAccept, null);
Console.Read();
}
private static void OnAccept(IAsyncResult result)
{
byte[] buffer = new byte[1024];
try
{
Socket client = null;
string headerResponse = "";
if (serverSocket != null && serverSocket.IsBound)
{
client = serverSocket.EndAccept(result);
var i = client.Receive(buffer);
headerResponse = (System.Text.Encoding.UTF8.GetString(buffer)).Substring(0, i);
// write received data to the console
Console.WriteLine(headerResponse);
Console.WriteLine("=====================");
}
if (client != null)
{
/* Handshaking and managing ClientSocket */
var key = headerResponse.Replace("ey:", "`")
.Split('`')[1] // dGhlIHNhbXBsZSBub25jZQ== \r\n .......
.Replace("\r", "").Split('\n')[0] // dGhlIHNhbXBsZSBub25jZQ==
.Trim();
// key should now equal dGhlIHNhbXBsZSBub25jZQ==
var test1 = AcceptKey(ref key);
var newLine = "\r\n";
var response = "HTTP/1.1 101 Switching Protocols" + newLine
+ "Upgrade: websocket" + newLine
+ "Connection: Upgrade" + newLine
+ "Sec-WebSocket-Accept: " + test1 + newLine + newLine
//+ "Sec-WebSocket-Protocol: chat, superchat" + newLine
//+ "Sec-WebSocket-Version: 13" + newLine
;
client.Send(System.Text.Encoding.UTF8.GetBytes(response));
var i = client.Receive(buffer); // wait for client to send a message
string browserSent = GetDecodedData(buffer, i);
Console.WriteLine("BrowserSent: " + browserSent);
Console.WriteLine("=====================");
//now send message to client
client.Send(GetFrameFromString("This is message from server to client."));
System.Threading.Thread.Sleep(10000);//wait for message to be sent
}
}
catch (SocketException exception)
{
throw exception;
}
finally
{
if (serverSocket != null && serverSocket.IsBound)
{
serverSocket.BeginAccept(null, 0, OnAccept, null);
}
}
}
public static T[] SubArray<T>(T[] data, int index, int length)
{
T[] result = new T[length];
Array.Copy(data, index, result, 0, length);
return result;
}
private static string AcceptKey(ref string key)
{
string longKey = key + guid;
byte[] hashBytes = ComputeHash(longKey);
return Convert.ToBase64String(hashBytes);
}
static SHA1 sha1 = SHA1CryptoServiceProvider.Create();
private static byte[] ComputeHash(string str)
{
return sha1.ComputeHash(System.Text.Encoding.ASCII.GetBytes(str));
}
//Needed to decode frame
public static string GetDecodedData(byte[] buffer, int length)
{
byte b = buffer[1];
int dataLength = 0;
int totalLength = 0;
int keyIndex = 0;
if (b - 128 <= 125)
{
dataLength = b - 128;
keyIndex = 2;
totalLength = dataLength + 6;
}
if (b - 128 == 126)
{
dataLength = BitConverter.ToInt16(new byte[] { buffer[3], buffer[2] }, 0);
keyIndex = 4;
totalLength = dataLength + 8;
}
if (b - 128 == 127)
{
dataLength = (int)BitConverter.ToInt64(new byte[] { buffer[9], buffer[8], buffer[7], buffer[6], buffer[5], buffer[4], buffer[3], buffer[2] }, 0);
keyIndex = 10;
totalLength = dataLength + 14;
}
if (totalLength > length)
throw new Exception("The buffer length is small than the data length");
byte[] key = new byte[] { buffer[keyIndex], buffer[keyIndex + 1], buffer[keyIndex + 2], buffer[keyIndex + 3] };
int dataIndex = keyIndex + 4;
int count = 0;
for (int i = dataIndex; i < totalLength; i++)
{
buffer[i] = (byte)(buffer[i] ^ key[count % 4]);
count++;
}
return Encoding.ASCII.GetString(buffer, dataIndex, dataLength);
}
//function to create frames to send to client
/// <summary>
/// Enum for opcode types
/// </summary>
public enum EOpcodeType
{
/* Denotes a continuation code */
Fragment = 0,
/* Denotes a text code */
Text = 1,
/* Denotes a binary code */
Binary = 2,
/* Denotes a closed connection */
ClosedConnection = 8,
/* Denotes a ping*/
Ping = 9,
/* Denotes a pong */
Pong = 10
}
/// <summary>Gets an encoded websocket frame to send to a client from a string</summary>
/// <param name="Message">The message to encode into the frame</param>
/// <param name="Opcode">The opcode of the frame</param>
/// <returns>Byte array in form of a websocket frame</returns>
public static byte[] GetFrameFromString(string Message, EOpcodeType Opcode = EOpcodeType.Text)
{
byte[] response;
byte[] bytesRaw = Encoding.Default.GetBytes(Message);
byte[] frame = new byte[10];
int indexStartRawData = -1;
int length = bytesRaw.Length;
frame[0] = (byte)(128 + (int)Opcode);
if (length <= 125)
{
frame[1] = (byte)length;
indexStartRawData = 2;
}
else if (length >= 126 && length <= 65535)
{
frame[1] = (byte)126;
frame[2] = (byte)((length >> 8) & 255);
frame[3] = (byte)(length & 255);
indexStartRawData = 4;
}
else
{
frame[1] = (byte)127;
frame[2] = (byte)((length >> 56) & 255);
frame[3] = (byte)((length >> 48) & 255);
frame[4] = (byte)((length >> 40) & 255);
frame[5] = (byte)((length >> 32) & 255);
frame[6] = (byte)((length >> 24) & 255);
frame[7] = (byte)((length >> 16) & 255);
frame[8] = (byte)((length >> 8) & 255);
frame[9] = (byte)(length & 255);
indexStartRawData = 10;
}
response = new byte[indexStartRawData + length];
int i, reponseIdx = 0;
//Add the frame bytes to the reponse
for (i = 0; i < indexStartRawData; i++)
{
response[reponseIdx] = frame[i];
reponseIdx++;
}
//Add the data bytes to the response
for (i = 0; i < length; i++)
{
response[reponseIdx] = bytesRaw[i];
reponseIdx++;
}
return response;
}
}
}
Client html and javascript:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"_x000D_
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">_x000D_
<html xmlns="http://www.w3.org/1999/xhtml">_x000D_
<head>_x000D_
<script type="text/javascript">_x000D_
var socket = new WebSocket('ws://localhost:8080/websession');_x000D_
socket.onopen = function() {_x000D_
// alert('handshake successfully established. May send data now...');_x000D_
socket.send("Hi there from browser.");_x000D_
};_x000D_
socket.onmessage = function (evt) {_x000D_
//alert("About to receive data");_x000D_
var received_msg = evt.data;_x000D_
alert("Message received = "+received_msg);_x000D_
};_x000D_
socket.onclose = function() {_x000D_
alert('connection closed');_x000D_
};_x000D_
</script>_x000D_
</head>_x000D_
<body>_x000D_
</body>_x000D_
</html>
_x000D_
It might be easier to use JavaScript or jquery for this. Assuming that the height of the header and the footer is 200 then the code will be:
function SetHeight(){
var h = $(window).height();
$("#inner-right").height(h-200);
}
$(document).ready(SetHeight);
$(window).resize(SetHeight);
$percentage = 50;
$totalWidth = 350;
$new_width = ($percentage / 100) * $totalWidth;
For PHP, add this line to your script which serves the information you want:
header("cache-control: no-cache");
or, add a unique variable to the query string:
"/portal/?f=searchBilling&x=" + (new Date()).getTime()
If the goal is to find the IP address connected in direction of internet, then this should be a good solution.
UPDATE!!! With new version of linux you get more information on the line:
ip route get 8.8.8.8
8.8.8.8 via 10.36.15.1 dev ens160 src 10.36.15.150 uid 1002
cache
so to get IP you need to find the IP after src
ip route get 8.8.8.8 | awk -F"src " 'NR==1{split($2,a," ");print a[1]}'
10.36.15.150
and if you like the interface name
ip route get 8.8.8.8 | awk -F"dev " 'NR==1{split($2,a," ");print a[1]}'
ens192
ip route
does not open any connection out, it just shows the route needed to get to 8.8.8.8
. 8.8.8.8
is Google's DNS.
If you like to store this into a variable, do:
my_ip=$(ip route get 8.8.8.8 | awk -F"src " 'NR==1{split($2,a," ");print a[1]}')
my_interface=$(ip route get 8.8.8.8 | awk -F"dev " 'NR==1{split($2,a," ");print a[1]}')
Why other solution may fail:
ifconfig eth0
Hostname -I
Make sure the prototype for your unit method is in the .h file.
Because you're calling the method higher in the file than you're defining it, you get this message. Alternatively, you could rearrange your methods, so that callers are lower in the file than the methods they call.
The proper way to do it is probably to break down the method by putting the try-catch block in a separate method, and use a return statement:
public void someMethod() {
try {
...
if (condition)
return;
...
} catch (SomeException e) {
...
}
}
If the code involves lots of local variables, you may also consider using a break
from a labeled block, as suggested by Stephen C:
label: try {
...
if (condition)
break label;
...
} catch (SomeException e) {
...
}
How about something like this?
val newDF = df.filter($"B" === "").take(1) match {
case Array() => df
case _ => df.withColumn("D", $"B" === "")
}
Using take(1)
should have a minimal hit
For an empty line in Markdown, escape a space (\
), and then add a new line.
Example:
"\
"
Remember: escape a space and escape a new line. That way is Markdown compliant and should compile properly in any compiler. You may have to select the example text to see how it is set up.
This is the way you should be doing it, and I say this because you are clearly new to C# and should probably try to understand how some basic stuff works!
public int Sum(params int[] customerssalary)
{
int result = 0;
for(int i = 0; i < customerssalary.Length; i++)
{
result += customerssalary[i];
}
return result;
}
with this Sum
function, you can use this to calculate the average too...
public decimal Average(params int[] customerssalary)
{
int sum = Sum(customerssalary);
decimal result = (decimal)sum / customerssalary.Length;
return result;
}
the reason for using a decimal
type in the second function is because the division can easily return a non-integer result
Others have provided a Linq alternative which is what I would use myself anyway, but with Linq there is no point in having your own functions anyway. I have made the assumption that you have been asked to implement such functions as a task to demonstrate your understanding of C#, but I could be wrong.
class FormPage extends React.Component{
constructor(props){
super(props);
this.state = {
hidediv: false
}
}
handleClick = (){
this.setState({
hidediv: true
});
}
render(){
return(
<div>
<div className="date-range" hidden = {this.state.hidediv}>
<input type="submit" value="Search" onClick={this.handleClick} />
</div>
<div id="results" className="search-results" hidden = {!this.state.hidediv}>
Some Results
</div>
</div>
);
}
}
For me, the following combination worked:
| Key Action Esc+ End result |
|-----------------------------------------------------|
| ?? Send Escape Sequence a Send ^[ a |
| ?? Send Escape Sequence e Send ^[ e |
std::vector
is a template class that encapsulate a dynamic array1, stored in the heap, that grows and shrinks automatically if elements are added or removed. It provides all the hooks (begin()
, end()
, iterators, etc) that make it work fine with the rest of the STL. It also has several useful methods that let you perform operations that on a normal array would be cumbersome, like e.g. inserting elements in the middle of a vector (it handles all the work of moving the following elements behind the scenes).
Since it stores the elements in memory allocated on the heap, it has some overhead in respect to static arrays.
std::array
is a template class that encapsulate a statically-sized array, stored inside the object itself, which means that, if you instantiate the class on the stack, the array itself will be on the stack. Its size has to be known at compile time (it's passed as a template parameter), and it cannot grow or shrink.
It's more limited than std::vector
, but it's often more efficient, especially for small sizes, because in practice it's mostly a lightweight wrapper around a C-style array. However, it's more secure, since the implicit conversion to pointer is disabled, and it provides much of the STL-related functionality of std::vector
and of the other containers, so you can use it easily with STL algorithms & co. Anyhow, for the very limitation of fixed size it's much less flexible than std::vector
.
For an introduction to std::array
, have a look at this article; for a quick introduction to std::vector
and to the the operations that are possible on it, you may want to look at its documentation.
You can save the current scroll amount and then set it later:
var tempScrollTop = $(window).scrollTop();
..//Your code
$(window).scrollTop(tempScrollTop);
I solved this using the optional()
helper. Using the example here it would be:
{{ optional($usersType) }}
A more complicated example would be if, like me, say you are trying to access a property of a null object (ie. $users->type
) in a view that is using old()
helper.
value="{{ old('type', optional($users)->type }}"
Important to note that the brackets go around the object variable and not the whole thing if trying to access a property of the object.
$products=R::findAll('products');
$string = rtrim(implode(',', $products), ',');
echo $string;
This was very helpful for me as I was trying to figure out how to match all the characters in an xml tag including attributes. I was running into the "matches everything to the end" problem with:
/<simpleChoice.*>/
but was able to resolve the issue with:
/<simpleChoice[^>]*>/
after reading this post. Thanks all.
It's trying to connect to the computer it's running on on port 5000, but the connection is being refused. Are you sure you have a server running?
If not, you can use netcat
for testing:
nc -l -k -p 5000
Some implementations may require you to omit the -p
flag.
Width and/or height in tables are not standard anymore; as Ianzz says, they are deprecated. Instead the best way to do this is to have a block element inside your table cell that will hold the cell open to your desired size:
<table>
<tr>
<td valign="top">
<div class="left_menu">
<div class="menu_item">
<a href="#">Home</a>
</div>
</div>
</td>
<td valign="top" class="content">Content</td>
</tr>
</table>
CSS
.content {
width: 1000px;
}
.left_menu {
background: none repeat scroll 0 0 #333333;
border-radius: 5px 5px 5px 5px;
font-family: Arial,Helvetica,sans-serif;
font-size: 12px;
font-weight: bold;
padding: 5px;
width: 200px;
}
.menu_item {
background: none repeat scroll 0 0 #CCCCCC;
border-bottom: 1px solid #999999;
border-radius: 5px 5px 5px 5px;
border-top: 1px solid #FFFFCC;
cursor: pointer;
padding: 5px;
}
With Dulwich tip you should be able to do:
from dulwich.repo import Repo
Repo("/path/to/source").clone("/path/to/target")
This is still very basic - it copies across the objects and the refs, but it doesn't yet create the contents of the working tree if you create a non-bare repository.
This is to add to of Gilles' Answer. There are many ways to get this done but personally I prefer something lightweight, easy to remember and universally available (e.g. come with standard LTS installations of your preferred Linux flavor or easy to install) on common *nix systems.
Here are the options in their preferred order:
Python Json.tool module
echo '{"foo": "lorem", "bar": "ipsum"}' | python -mjson.tool
pros: almost available everywhere; cons: no color coding
jq (may require one time installation)
echo '{"foo": "lorem", "bar": "ipsum"}' | jq
cons: needs to install jq; pros: color coding and versatile
json_pp (available in Ubuntu 16.04 LTS)
echo '{"foo": "lorem", "bar": "ipsum"}' | json_pp
For Ruby users
gem install jsonpretty
echo '{"foo": "lorem", "bar": "ipsum"}' | jsonpretty
If you are developing a command line application, you can also use Console.ReadLine()
at the end of your code to wait for the 'Enter' keypress before closing the console window so that you can read your output. However, both the Trace and Debug answers posted above are better options.
>>> from datetime import date
>>>
>>> repr(date.today()) # calls date.today().__repr__()
'datetime.date(2009, 1, 16)'
>>> eval(_) # _ is the output of the last command
datetime.date(2009, 1, 16)
The output is a string that can be parsed by the python interpreter and results in an equal object.
If that's not possible, it should return a string in the form of <...some useful description...>
.
use contentPadding, it will reduce the textbox or dropdown list height
InputDecorator(
decoration: InputDecoration(
errorStyle: TextStyle(
color: Colors.redAccent, fontSize: 16.0),
hintText: 'Please select expense',
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(1.0),
),
contentPadding: EdgeInsets.all(8)),//Add this edge option
child: DropdownButton(
isExpanded: true,
isDense: true,
itemHeight: 50.0,
hint: Text(
'Please choose a location'), // Not necessary for Option 1
value: _selectedLocation,
onChanged: (newValue) {
setState(() {
_selectedLocation = newValue;
});
},
items: citys.map((location) {
return DropdownMenuItem(
child: new Text(location.name),
value: location.id,
);
}).toList(),
),
),
$text='<span style="font-weight: bold;">Foo</span>';
$text=preg_replace( '/<span style="font-weight: bold;">(.*?)<\/span>/', '<strong>$1</strong>',$text);
Note: only work for your example.
This is going to depend on your application but in general the fastest way to transpose a matrix would be to invert your coordinates when you do a look up, then you do not have to actually move any data.