There are two methods you can use. Both require creating a user and a database.
By default psql connects to the database with the same name as the user. So there is a convention to make that the "user's database". And there is no reason to break that convention if your user only needs one database. We'll be using mydatabase
as the example database name.
Using createuser and createdb, we can be explicit about the database name,
$ sudo -u postgres createuser -s $USER
$ createdb mydatabase
$ psql -d mydatabase
You should probably be omitting that entirely and letting all the commands default to the user's name instead.
$ sudo -u postgres createuser -s $USER
$ createdb
$ psql
Using the SQL administration commands, and connecting with a password over TCP
$ sudo -u postgres psql postgres
And, then in the psql shell
CREATE ROLE myuser LOGIN PASSWORD 'mypass';
CREATE DATABASE mydatabase WITH OWNER = myuser;
Then you can login,
$ psql -h localhost -d mydatabase -U myuser -p <port>
If you don't know the port, you can always get it by running the following, as the postgres
user,
SHOW port;
Or,
$ grep "port =" /etc/postgresql/*/main/postgresql.conf
postgres
userI suggest NOT modifying the postgres
user.
postgres
. You're supposed to have root to get to authenticate as postgres
.postgres
which is the PostgreSQL equivalent of SQL Server's SA
, you have to have write-access to the underlying data files. And, that means that you could normally wreck havoc anyway.If you launch your program with -enableassertions
(or -ea
for short) then this statement
assert cond;
is equivalent to
if (!cond)
throw new AssertionError();
If you launch your program without this option, the assert statement will have no effect.
For example, assert d >= 0 && d <= s.length();
, as posted in your question, is equivalent to
if (!(d >= 0 && d <= s.length()))
throw new AssertionError();
(If you launched with -enableassertions
that is.)
Formally, the Java Language Specification: 14.10. The assert
Statement says the following:
14.10. The
assert
Statement
An assertion is anassert
statement containing a boolean expression. An assertion is either enabled or disabled. If the assertion is enabled, execution of the assertion causes evaluation of the boolean expression and an error is reported if the expression evaluates tofalse
. If the assertion is disabled, execution of the assertion has no effect whatsoever.
Where "enabled or disabled" is controlled with the -ea
switch and "An error is reported" means that an AssertionError
is thrown.
assert
:You can append : "Error message"
like this:
assert d != null : "d is null";
to specify what the error message of the thrown AssertionError should be.
This post has been rewritten as an article here.
The easiest method would be to wrap them both in a container div
and apply margin: 0 auto;
to the container. This will center both the #page-wrap
and the #sidebar
divs on the page. However, if you want that off-center look, you could then shift the container
200px
to the left, to account for the width of the #sidebar
div.
If you're using Emacs, you can type C-x v ~
to see a different revision of the file you're currently editing (tags, branches and hashes all work).
Would this work better?
import java.util.Scanner;
public class Work {
public static void main(String[] args){
System.out.println("Please enter the following information");
String name = "0";
String num = "0";
String address = "0";
int i = 0;
Scanner input = new Scanner(System.in);
//The Arrays
String [] contactName = new String [7];
String [] contactNum = new String [7];
String [] contactAdd = new String [7];
//I set these as the Array titles
contactName[0] = "Name";
contactNum[0] = "Phone Number";
contactAdd[0] = "Address";
//This asks for the information and builds an Array for each
//i -= i resets i back to 0 so the arrays are not 7,14,21+
while (i < 6){
i++;
System.out.println("Enter contact name." + i);
name = input.nextLine();
contactName[i] = name;
}
i -= i;
while (i < 6){
i++;
System.out.println("Enter contact number." + i);
num = input.nextLine();
contactNum[i] = num;
}
i -= i;
while (i < 6){
i++;
System.out.println("Enter contact address." + i);
num = input.nextLine();
contactAdd[i] = num;
}
//Now lets print out the Arrays
i -= i;
while(i < 6){
i++;
System.out.print( i + " " + contactName[i] + " / " );
}
//These are set to print the array on one line so println will skip a line
System.out.println();
i -= i;
i -= 1;
while(i < 6){
i++;
System.out.print( i + " " + contactNum[i] + " / " );
}
System.out.println();
i -= i;
i -= 1;
while(i < 6){
i++;
System.out.print( i + " " + contactAdd[i] + " / " );
}
System.out.println();
System.out.println("End of program");
}
}
If you want to know if list element at index i
is set or not, you can simply check the following:
if len(l)<=i:
print ("empty")
If you are looking for something like what is a NULL-Pointer or a NULL-Reference in other languages, Python offers you None
. That is you can write:
l[0] = None # here, list element at index 0 has to be set already
l.append(None) # here the list can be empty before
# checking
if l[i] == None:
print ("list has actually an element at position i, which is None")
Simply used this custom dialog class which field you not needed to leave it or make it null so this customization you got easily.
import 'package:flutter/material.dart';
class CustomAlertDialog extends StatelessWidget {
final Color bgColor;
final String title;
final String message;
final String positiveBtnText;
final String negativeBtnText;
final Function onPostivePressed;
final Function onNegativePressed;
final double circularBorderRadius;
CustomAlertDialog({
this.title,
this.message,
this.circularBorderRadius = 15.0,
this.bgColor = Colors.white,
this.positiveBtnText,
this.negativeBtnText,
this.onPostivePressed,
this.onNegativePressed,
}) : assert(bgColor != null),
assert(circularBorderRadius != null);
@override
Widget build(BuildContext context) {
return AlertDialog(
title: title != null ? Text(title) : null,
content: message != null ? Text(message) : null,
backgroundColor: bgColor,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(circularBorderRadius)),
actions: <Widget>[
negativeBtnText != null
? FlatButton(
child: Text(negativeBtnText),
textColor: Theme.of(context).accentColor,
onPressed: () {
Navigator.of(context).pop();
if (onNegativePressed != null) {
onNegativePressed();
}
},
)
: null,
positiveBtnText != null
? FlatButton(
child: Text(positiveBtnText),
textColor: Theme.of(context).accentColor,
onPressed: () {
if (onPostivePressed != null) {
onPostivePressed();
}
},
)
: null,
],
);
}
}
Usage:
var dialog = CustomAlertDialog(
title: "Logout",
message: "Are you sure, do you want to logout?",
onPostivePressed: () {},
positiveBtnText: 'Yes',
negativeBtnText: 'No');
showDialog(
context: context,
builder: (BuildContext context) => dialog);
Output:
just in case you're facing this problem under windows 10 , add the group of users "youcomputer\Users" on the security Tab and grant it full control , that solved my issue
I too found this perplexing. I'm running Ubuntu 18 and found the following: If the cv.imshow window has focus, you'll get one set of values in the terminal - like the ASCII values discussed above.
If the Terminal has focus, you'll see different values. IE- you'll see "a" when you press the a key (instead of ASCII value 97) and "^]" instead of "27" when you press Escape.
I didn't see the 6 digit numbers mentioned above in either case and I used similar code. It seems the value for waitKey is the polling period in mS. The dots illustrate this.
Run this snippet and press keys while focus is on the test image, then click on the terminal window and press the same keys.
import cv2
img = cv2.imread('test.jpg')
cv2.imshow('Your test image', img)
while(1):
k = cv2.waitKey(300)
if k == 27:
break
elif k==-1:
print "."
continue
else:
print k
Custom Pipes: When a custom pipe is created, It must be registered in Module and Component that is being used.
export class SummaryPipe implements PipeTransform{
//Implementing transform
transform(value: string, limit?: number): any {
if (!value) {
return null;
}
else {
let actualLimit=limit>0?limit:50
return value.substr(0,actualLimit)+'...'
}
}
}
Add Pipe Decorator
@Pipe({
name:'summary'
})
and refer
import { SummaryPipe } from '../summary.pipe';` //**In Component and Module**
<div>
**{{text | summary}}** //Name should same as it is mentioned in the decorator.
</div>
//summary is the name declared in Pipe decorator
To add up on the answer, I used this at the beginning of the needed script. So it runs smoothly on different environments.
import os
import matplotlib as mpl
if os.environ.get('DISPLAY','') == '':
print('no display found. Using non-interactive Agg backend')
mpl.use('Agg')
import matplotlib.pyplot as plt
Because I didn't want it to be alsways using the 'Agg'
backend, only when it would go through Travis CI for example.
There seems to be a lot of confusion here. The answers I see so far don't correctly enforce the 1+ number/1+ lowercase/1+ uppercase rule, meaning that passwords like abc123, 123XYZ, or AB*&^# would still be accepted. Preventing all-lowercase, all-caps, or all-digits is not enough; you have to enforce the presence of at least one of each.
Try the following:
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d).{8,15}$
If you also want to require at least one special character (which is probably a good idea), try this:
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[^\da-zA-Z]).{8,15}$
The .{8,15}
can be made more restrictive if you wish (for example, you could change it to \S{8,15}
to disallow whitespace), but remember that doing so will reduce the strength of your password scheme.
I've tested this pattern and it works as expected. Tested on ReFiddle here: http://refiddle.com/110
Edit: One small note, the easiest way to do this is with 3 separate regexes and the string's Length
property. It's also easier to read and maintain, so do it that way if you have the option. If this is for validation rules in markup, though, you're probably stuck with a single regex.
Although the best way to do this is to use % if you insist on using strings this will work
public int lastDigit(int number)
{
return Integer.parseInt(String.valueOf(Integer.toString(number).charAt(Integer.toString(number).length() - 1)));
}
but I just wrote this for completeness. Do not use this code. it is just awful.
In pyspark,SparkSql syntax:
where column_n like 'xyz%'
might not work.
Use:
where column_n RLIKE '^xyz'
This works perfectly fine.
Your student.h file only forward declares a struct named "Student", it does not define one. This is sufficient if you only refer to it through reference or pointer. However, as soon as you try to use it (including creating one) you will need the full definition of the structure.
In short, move your struct Student { ... }; into the .h file and use the .cpp file for implementation of member functions (which it has none so you don't need a .cpp file).
simple
add(new JScrollPane(textArea), BorderLayout.CENTER);
Yes, experience with EJB, Web Apps ( servlest and JSP ), transactions, webservices, management, and application servers.
It also means, experience with "enteprise" level application, as opposed to desktop applications.
In many situations the enterprise applications needs to connect to with a number of legacy systems, they are not only "web pages", and with the features availalble on the "edition" of java that kind of connectivity can be solved.
Try This
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setComponent(new ComponentName(appDetails.packageName,"com.android.packageinstaller.permission.ui.ManagePermissionsActivity"));
startActivity(intent);
We can use $set
operator to update the nested array inside object filed update the value
db.getCollection('geolocations').update(
{
"_id" : ObjectId("5bd3013ac714ea4959f80115"),
"geolocation.country" : "United States of America"
},
{ $set:
{
"geolocation.$.country" : "USA"
}
},
false,
true
);
For everyone using editors like Komodo Edit (win10) add sys.stdout.flush()
to:
def mp_worker((inputs, the_time)):
print " Process %s\tWaiting %s seconds" % (inputs, the_time)
time.sleep(int(the_time))
print " Process %s\tDONE" % inputs
sys.stdout.flush()
or as first line to:
if __name__ == '__main__':
sys.stdout.flush()
This helps to see what goes on during the run of the script; in stead of having to look at the black command line box.
suzanshakya, I'm actually modifying your code, I think this will simplify the code, but make sure before running the code the file must be in the same directory of the console otherwise you'll get error.
lookup="The_String_You're_Searching"
file_name = open("file.txt")
for num, line in enumerate(file_name,1):
if lookup in line:
print(num)
I just got this after creating a new Objective-C project in Xcode 10, after I added a Core Data model file to the project.
I found two ways to fix this:
The model contains a "contents" file with this line:
<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="14460.32" systemVersion="17G5019" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
In there is a sourceLanguage="Swift"
entry. Change it to sourceLanguage="Objective-C"
and the error goes away.
To find the "contents" file, right click on the .xcdatamodeld
in Xcode and do "Show in Finder". Right-click on the actual (Finder) file and do "Show Package Contents"
Also: Changing the model's language will stop Xcode from generating managed object subclass files in Swift.
Another option which doesn't require numpy is:
precision = 2
myRoundedList = [int(elem*(10**precision)+delta)/(10.0**precision) for elem in myList]
# delta=0 for floor
# delta = 0.5 for round
# delta = 1 for ceil
Keep in mind that unless you're writing your own data structure (e.g. linked list in C), it can depend dramatically on the implementation of data structures in your language/framework of choice. As an example, take a look at the benchmarks of Apple's CFArray over at Ridiculous Fish. In this case, the data type, a CFArray from Apple's CoreFoundation framework, actually changes data structures depending on how many objects are actually in the array - changing from linear time to constant time at around 30,000 objects.
This is actually one of the beautiful things about object-oriented programming - you don't need to know how it works, just that it works, and the 'how it works' can change depending on requirements.
After several days of searching found the EAN API - http://developer.ean.com/ - it is a very big one, but it provides really good information. Free demos, XML\JSON format. Looks good.
In my case, I was looping through a series of objects from an XML file, but some of the instances apparently were not objects which was causing the error. Checking if the object was empty before processing it fixed the problem.
In other words, without checking if the object was empty, the script would error out on any empty object with the error as given below.
Trying to get property of non-object
For Example:
if (!empty($this->xml_data->thing1->thing2))
{
foreach ($this->xml_data->thing1->thing2 as $thing)
{
}
}
One could install Git for Windows and subsequently run ssh-add
:
Step 3: Add your key to the ssh-agent
To configure the ssh-agent program to use your SSH key:
If you have GitHub for Windows installed, you can use it to clone repositories and not deal with SSH keys. It also comes with the Git Bash tool, which is the preferred way of running git commands on Windows.
Ensure ssh-agent is enabled:
If you are using Git Bash, turn on ssh-agent:
# start the ssh-agent in the background ssh-agent -s # Agent pid 59566
If you are using another terminal prompt, such as msysgit, turn on ssh-agent:
# start the ssh-agent in the background eval $(ssh-agent -s) # Agent pid 59566
Add your SSH key to the ssh-agent:
ssh-add ~/.ssh/id_rsa
In my case the error states that the assemly
Oracle.DataAccess, Version=2.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342
is missing.
When I run gacutil.exe /l 'Oracle.DataAccess'
the result was:
The Global Assembly Cache contains the following assemblies:
Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=x86
Number of items = 1
At this moment I have just installed the oracle client: win32_11gR2_client
Then I installed oracle developer tools ODTwithODAC112030_deleloper_tool
Now gacutil
is saying:
The Global Assembly Cache contains the following assemblies:
Oracle.DataAccess, Version=2.112.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=x86
Oracle.DataAccess, Version=2.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=x86
Number of items = 2
Fixed, one totally missing assembly case
I think a better way to do this is to change the base_size
argument. It will increase the text sizes consistently.
g + theme_grey(base_size = 22)
As seen here.
Your expression should already match dashes, because the final - will not be interpreted as a range operator (since the range has no end). To add underscores as well, try:
([A-Za-z0-9_-]+)
I'm assuming you're using Windows, and GitBASH.
You can just delete the folder "C:...\project" with no adverse effects.
Then in git bash, you can do cd c\:
. This changes the directory you're working in to C:\
Then you can do git clone [url]
This will create a folder called "project" on C:\ with the contents of the repo.
If you'd like to name it something else, you can do
git clone [url] [something else]
For example
cd c\:
git clone [email protected]:username\repo.git MyRepo
This would create a folder at "C:\MyRepo" with the contents of the remote repository.
try my code In JavaScript
var settings = {
"url": "https://myinboxhub.co.in/example",
"method": "GET",
"timeout": 0,
"headers": {},
};
$.ajax(settings).done(function (response) {
console.log(response);
if (response.auth) {
console.log('on success');
}
}).fail(function (jqXHR, exception) {
var msg = '';
if (jqXHR.status === '(failed)net::ERR_INTERNET_DISCONNECTED') {
msg = 'Uncaught Error.\n' + jqXHR.responseText;
}
if (jqXHR.status === 0) {
msg = 'Not connect.\n Verify Network.';
} else if (jqXHR.status == 413) {
msg = 'Image size is too large.';
} else if (jqXHR.status == 404) {
msg = 'Requested page not found. [404]';
} else if (jqXHR.status == 405) {
msg = 'Image size is too large.';
} else if (jqXHR.status == 500) {
msg = 'Internal Server Error [500].';
} else if (exception === 'parsererror') {
msg = 'Requested JSON parse failed.';
} else if (exception === 'timeout') {
msg = 'Time out error.';
} else if (exception === 'abort') {
msg = 'Ajax request aborted.';
} else {
msg = 'Uncaught Error.\n' + jqXHR.responseText;
}
console.log(msg);
});;
In PHP
header('Content-type: application/json');
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET");
header("Access-Control-Allow-Methods: GET, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type, Content-Length, Accept-Encoding");
I wasn't able to fix the problem OpenCV either, but a video4linux (V4L2) workaround does work with OpenCV when using Linux. At least, it does on my Raspberry Pi with Rasbian and my cheap webcam. This is not as solid, light and portable as you'd like it to be, but for some situations it might be very useful nevertheless.
Make sure you have the v4l2-ctl application installed, e.g. from the Debian v4l-utils package. Than run (before running the python application, or from within) the command:
v4l2-ctl -d /dev/video1 -c exposure_auto=1 -c exposure_auto_priority=0 -c exposure_absolute=10
It overwrites your camera shutter time to manual settings and changes the shutter time (in ms?) with the last parameter to (in this example) 10. The lower this value, the darker the image.
Get-ADPrincipalGroupMembership will do this.
Get-ADPrincipalGroupMembership username | select name
name
----
Domain Users
Domain Computers
Workstation Admins
Company Users
Company Developers
AutomatedProcessingTeam
You can add some fonts via Google Web Fonts.
Technically, the fonts are hosted at Google and you link them in the HTML header. Then, you can use them freely in CSS with @font-face
(read about it).
For example:
In the <head>
section:
<link href=' http://fonts.googleapis.com/css?family=Droid+Sans' rel='stylesheet' type='text/css'>
Then in CSS:
h1 { font-family: 'Droid Sans', arial, serif; }
The solution seems quite reliable (even Smashing Magazine uses it for an article title.). There are, however, not so many fonts available so far in Google Font Directory.
A bit more readable comparing is done by casting event.key
to upper case (I used onkeyup - needed the event to fire once upon each key tap):
window.onkeyup = function(event) {
let key = event.key.toUpperCase();
if ( key == 'W' ) {
// 'W' key is pressed
} else if ( key == 'D' ) {
// 'D' key is pressed
}
}
Each key has it's own code, get it out by outputting value of "key" variable (eg for arrow up key it will be 'ARROWUP' - (casted to uppercase))
Insert Into FEMALE(ID, Image)
Select '1', BulkColumn
from Openrowset (Bulk 'D:\thepathofimage.jpg', Single_Blob) as Image
You will also need admin rights to run the query.
None of the above had worked for me. This had been working for me prior to today. I then realized I had been working with creating a hosted connection on my laptop and had Shared an internet connection with my Wireless Network Connection.
To fix my issue:
Go to Control Panel > Network and Internet > Network Connections
Right click on any secondary Wireless Network Connection you may have (mine was named Wireless Network Connection 2) and click 'Properties'.
Go to the 'Sharing' tab at the top.
Uncheck the box that states 'Allow other network users to connect through this computer's Internet connection'.
Hit OK > then Apply.
Hope this helps!
You could design a simple nine-patch png image and use it as the background of spinner. Using GIMP you can put both border and right triangle in image.
const clone = (fn, context = this) => {
// Creates a new function, optionally preserving desired context.
const newFn = fn.bind(context);
// Shallow copies over function properties, if any.
return Object.assign(newFn, fn);
}
// Usage:
// Setup the function to copy from.
const log = (...args) => console.log(...args);
log.testProperty = 1;
// Clone and make sure the function and properties are intact.
const log2 = clone(log);
log2('foo');
// -> 'foo'
log2.testProperty;
// -> 1
// Make sure tweaks to the clone function's properties don't affect the original function properties.
log2.testProperty = 2;
log2.testProperty;
// -> 2
log.testProperty;
// -> 1
This clone function:
Note that this version only performs a shallow copy. If your function has objects as properties, the reference to the original object is preserved (same behavior as Object spread or Object.assign). This means that changing deep properties in the cloned function will affect the object referenced in the original function!
For me, it just was that service console restart didn't work after tomcat ran into an error. Only stop/start brought it back.
You can remove the spaces before casting to int
:
(int)str_replace(' ', '', $b);
Also, if you want to strip other commonly used digit delimiters (such as ,
), you can give the function an array (beware though -- in some countries, like mine for example, the comma is used for fraction notation):
(int)str_replace(array(' ', ','), '', $b);
Had similar problems recently. Would suggest you carefully check if the user you're connecting with has proper authorizations on the remote machine.
You can review permissions using the following command.
Set-PSSessionConfiguration -ShowSecurityDescriptorUI -Name Microsoft.PowerShell
Found this tip here (updated link, thanks "unbob"):
https://devblogs.microsoft.com/scripting/configure-remote-security-settings-for-windows-powershell/
It fixed it for me.
originalArrayList.addAll(copyArrayList);
Please Note: When using the addAll() method to copy, the contents of both the array lists (originalArrayList and copyArrayList) refer to the same objects or contents. So if you modify any one of them the other will also reflect the same change.
If you don't wan't this then you need to copy each element from the originalArrayList to the copyArrayList, like using a for or while loop.
8.3.5.8 If the type of a parameter includes a type of the form “pointer to array of unknown bound of T” or “reference to array of unknown bound of T,” the program is ill-formed
<iframe>
The iframe element represents a nested browsing context. HTML 5 standard - "The
<iframe>
element"
Primarily used to include resources from other domains or subdomains but can be used to include content from the same domain as well. The <iframe>
's strength is that the embedded code is 'live' and can communicate with the parent document.
<embed>
Standardised in HTML 5, before that it was a non standard tag, which admittedly was implemented by all major browsers. Behaviour prior to HTML 5 can vary ...
The embed element provides an integration point for an external (typically non-HTML) application or interactive content. (HTML 5 standard - "The
<embed>
element")
Used to embed content for browser plugins. Exceptions to this is SVG and HTML that are handled differently according to the standard.
The details of what can and can not be done with the embedded content is up to the browser plugin in question. But for SVG you can access the embedded SVG document from the parent with something like:
svg = document.getElementById("parent_id").getSVGDocument();
From inside an embedded SVG or HTML document you can reach the parent with:
parent = window.parent.document;
For embedded HTML there is no way to get at the embedded document from the parent (that I have found).
<object>
The
<object>
element can represent an external resource, which, depending on the type of the resource, will either be treated as an image, as a nested browsing context, or as an external resource to be processed by a plugin. (HTML 5 standard - "The<object>
element")
Unless you are embedding SVG or something static you are probably best of using <iframe>
. To include SVG use <embed>
(if I remember correctly <object>
won't let you script†). Honestly I don't know why you would use <object>
unless for older browsers or flash (that I don't work with).
† As pointed out in the comments below; scripts in <object>
will run but the parent and child contexts can't communicate directly. With <embed>
you can get the context of the child from the parent and vice versa. This means they you can use scripts in the parent to manipulate the child etc. That part is not possible with <object>
or <iframe>
where you would have to set up some other mechanism instead, such as the JavaScript postMessage API.
You can use the library on Mozilla website here
You'll be able to set and get cookies like this
docCookies.setItem(name, value);
docCookies.getItem(name);
Just loop through the array and write the items to the console using Write
instead of WriteLine
:
foreach(var item in array)
Console.Write(item.ToString() + " ");
As long as your items don't have any line breaks, that will produce a single line.
...or, as Jon Skeet said, provide a little more context to your question.
In the simplest case, with Swift 3, you can use Array
's init(_:)
initializer to get an Array
from a Set
. init(_:)
has the following declaration:
init<S>(_ s: S) where S : Sequence, Element == S.Iterator.Element
Creates an array containing the elements of a sequence.
Usage:
let stringSet = Set(arrayLiteral: "car", "boat", "car", "bike", "toy")
let stringArray = Array(stringSet)
print(stringArray)
// may print ["toy", "car", "bike", "boat"]
However, if you also want to perform some operations on each element of your Set
while transforming it into an Array
, you can use map
, flatMap
, sort
, filter
and other functional methods provided by Collection
protocol:
let stringSet = Set(["car", "boat", "bike", "toy"])
let stringArray = stringSet.sorted()
print(stringArray)
// will print ["bike", "boat", "car", "toy"]
let stringSet = Set(arrayLiteral: "car", "boat", "car", "bike", "toy")
let stringArray = stringSet.filter { $0.characters.first != "b" }
print(stringArray)
// may print ["car", "toy"]
let intSet = Set([1, 3, 5, 2])
let stringArray = intSet.flatMap { String($0) }
print(stringArray)
// may print ["5", "2", "3", "1"]
let intSet = Set([1, 3, 5, 2])
// alternative to `let intArray = Array(intSet)`
let intArray = intSet.map { $0 }
print(intArray)
// may print [5, 2, 3, 1]
Put it in a TRY/CATCH
.
When RAISERROR is run with a severity of 11 or higher in a TRY block, it transfers control to the associated CATCH block
Reference: MSDN.
EDIT: This works for MSSQL 2005+, but I see that you now have clarified that you are working on MSSQL 2000. I'll leave this here for reference.
s[0:"s".index("&")]
what does this do:
The best way to do this is with boolean masking:
In [56]: df
Out[56]:
line_date daysago line_race rating raw wrating
0 2007-03-31 62 11 56 1.000 56.000
1 2007-03-10 83 11 67 1.000 67.000
2 2007-02-10 111 9 66 1.000 66.000
3 2007-01-13 139 10 83 0.881 73.096
4 2006-12-23 160 10 88 0.793 69.787
5 2006-11-09 204 9 52 0.637 33.106
6 2006-10-22 222 8 66 0.582 38.408
7 2006-09-29 245 9 70 0.519 36.318
8 2006-09-16 258 11 68 0.486 33.063
9 2006-08-30 275 8 72 0.447 32.160
10 2006-02-11 475 5 65 0.165 10.698
11 2006-01-13 504 0 70 0.142 9.969
12 2006-01-02 515 0 64 0.135 8.627
13 2005-12-06 542 0 70 0.118 8.246
14 2005-11-29 549 0 70 0.114 7.963
15 2005-11-22 556 0 -1 0.110 -0.110
16 2005-11-01 577 0 -1 0.099 -0.099
17 2005-10-20 589 0 -1 0.093 -0.093
18 2005-09-27 612 0 -1 0.083 -0.083
19 2005-09-07 632 0 -1 0.075 -0.075
20 2005-06-12 719 0 69 0.049 3.360
21 2005-05-29 733 0 -1 0.045 -0.045
22 2005-05-02 760 0 -1 0.040 -0.040
23 2005-04-02 790 0 -1 0.034 -0.034
24 2005-03-13 810 0 -1 0.031 -0.031
25 2004-11-09 934 0 -1 0.017 -0.017
In [57]: df[df.line_race != 0]
Out[57]:
line_date daysago line_race rating raw wrating
0 2007-03-31 62 11 56 1.000 56.000
1 2007-03-10 83 11 67 1.000 67.000
2 2007-02-10 111 9 66 1.000 66.000
3 2007-01-13 139 10 83 0.881 73.096
4 2006-12-23 160 10 88 0.793 69.787
5 2006-11-09 204 9 52 0.637 33.106
6 2006-10-22 222 8 66 0.582 38.408
7 2006-09-29 245 9 70 0.519 36.318
8 2006-09-16 258 11 68 0.486 33.063
9 2006-08-30 275 8 72 0.447 32.160
10 2006-02-11 475 5 65 0.165 10.698
UPDATE: Now that pandas 0.13 is out, another way to do this is df.query('line_race != 0')
.
I was also in the same problem, check your build path in eclipse by Right Click on Project > build path > configure build path
Now check for Excluded Files, it should not have your file specified there by any means or by regex.
Cheers!
=IF(X2>=85,0.559,IF(X2>=80,0.327,IF(X2>=75,0.255,-1)))
Explanation:
=IF(X2>=85, 'If the value is in the highest bracket
0.559, 'Use the appropriate number
IF(X2>=80, 'Otherwise, if the number is in the next highest bracket
0.327, 'Use the appropriate number
IF(X2>=75, 'Otherwise, if the number is in the next highest bracket
0.255, 'Use the appropriate number
-1 'Otherwise, we're not in any of the ranges (Error)
)
)
)
From API level 17 and above, you can call: View.generateViewId()
Then use View.setId(int).
If your app is targeted lower than API level 17, use ViewCompat.generateViewId()
Preface:
Some of the other answers are correct but don't actually illustrate what the problem being solved is, so I created this answer to present that detailed illustration.
As such, I am posting a detailed walk-through of what the browser does and how using setTimeout()
helps. It looks longish but is actually very simple and straightforward - I just made it very detailed.
UPDATE: I have made a JSFiddle to live-demonstrate the explanation below: http://jsfiddle.net/C2YBE/31/ . Many thanks to @ThangChung for helping to kickstart it.
UPDATE2: Just in case JSFiddle web site dies, or deletes the code, I added the code to this answer at the very end.
DETAILS:
Imagine a web app with a "do something" button and a result div.
The onClick
handler for "do something" button calls a function "LongCalc()", which does 2 things:
Makes a very long calculation (say takes 3 min)
Prints the results of calculation into the result div.
Now, your users start testing this, click "do something" button, and the page sits there doing seemingly nothing for 3 minutes, they get restless, click the button again, wait 1 min, nothing happens, click button again...
The problem is obvious - you want a "Status" DIV, which shows what's going on. Let's see how that works.
So you add a "Status" DIV (initially empty), and modify the onclick
handler (function LongCalc()
) to do 4 things:
Populate the status "Calculating... may take ~3 minutes" into status DIV
Makes a very long calculation (say takes 3 min)
Prints the results of calculation into the result div.
Populate the status "Calculation done" into status DIV
And, you happily give the app to users to re-test.
They come back to you looking very angry. And explain that when they clicked the button, the Status DIV never got updated with "Calculating..." status!!!
You scratch your head, ask around on StackOverflow (or read docs or google), and realize the problem:
The browser places all its "TODO" tasks (both UI tasks and JavaScript commands) resulting from events into a single queue. And unfortunately, re-drawing the "Status" DIV with the new "Calculating..." value is a separate TODO which goes to the end of the queue!
Here's a breakdown of the events during your user's test, contents of the queue after each event:
[Empty]
[Execute OnClick handler(lines 1-4)]
[Execute OnClick handler(lines 2-4), re-draw Status DIV with new "Calculating" value]
. Please note that while the DOM changes happen instantaneously, to re-draw the corresponding DOM element you need a new event, triggered by the DOM change, that went at the end of the queue.[Execute OnClick handler(lines 3-4), re-draw Status DIV with "Calculating" value]
.[Execute OnClick handler(line 4), re-draw Status DIV with "Calculating" value, re-draw result DIV with result]
.[Execute OnClick handler, re-draw Status DIV with "Calculating" value, re-draw result DIV with result; re-draw Status DIV with "DONE" value]
.return
from onclick
handler sub. We take the "Execute OnClick handler" off the queue and start executing next item on the queue.So, the underlying problem is that the re-draw event for "Status" DIV is placed on the queue at the end, AFTER the "execute line 2" event which takes 3 minutes, so the actual re-draw doesn't happen until AFTER the calculation is done.
To the rescue comes the setTimeout()
. How does it help? Because by calling long-executing code via setTimeout
, you actually create 2 events: setTimeout
execution itself, and (due to 0 timeout), separate queue entry for the code being executed.
So, to fix your problem, you modify your onClick
handler to be TWO statements (in a new function or just a block within onClick
):
Populate the status "Calculating... may take ~3 minutes" into status DIV
Execute setTimeout()
with 0 timeout and a call to LongCalc()
function.
LongCalc()
function is almost the same as last time but obviously doesn't have "Calculating..." status DIV update as first step; and instead starts the calculation right away.
So, what does the event sequence and the queue look like now?
[Empty]
[Execute OnClick handler(status update, setTimeout() call)]
[Execute OnClick handler(which is a setTimeout call), re-draw Status DIV with new "Calculating" value]
. [re-draw Status DIV with "Calculating" value]
. The queue has nothing new in it for 0 more seconds.[re-draw Status DIV with "Calculating" value, execute LongCalc (lines 1-3)]
. [execute LongCalc (lines 1-3)]
. Please note that this re-draw event might actually happen BEFORE the alarm goes off, which works just as well.Hooray! The Status DIV just got updated to "Calculating..." before the calculation started!!!
Below is the sample code from the JSFiddle illustrating these examples: http://jsfiddle.net/C2YBE/31/ :
HTML code:
<table border=1>
<tr><td><button id='do'>Do long calc - bad status!</button></td>
<td><div id='status'>Not Calculating yet.</div></td>
</tr>
<tr><td><button id='do_ok'>Do long calc - good status!</button></td>
<td><div id='status_ok'>Not Calculating yet.</div></td>
</tr>
</table>
JavaScript code: (Executed on onDomReady
and may require jQuery 1.9)
function long_running(status_div) {
var result = 0;
// Use 1000/700/300 limits in Chrome,
// 300/100/100 in IE8,
// 1000/500/200 in FireFox
// I have no idea why identical runtimes fail on diff browsers.
for (var i = 0; i < 1000; i++) {
for (var j = 0; j < 700; j++) {
for (var k = 0; k < 300; k++) {
result = result + i + j + k;
}
}
}
$(status_div).text('calculation done');
}
// Assign events to buttons
$('#do').on('click', function () {
$('#status').text('calculating....');
long_running('#status');
});
$('#do_ok').on('click', function () {
$('#status_ok').text('calculating....');
// This works on IE8. Works in Chrome
// Does NOT work in FireFox 25 with timeout =0 or =1
// DOES work in FF if you change timeout from 0 to 500
window.setTimeout(function (){ long_running('#status_ok') }, 0);
});
See ?merge
:
the name "row.names" or the number 0 specifies the row names.
Example:
R> de <- merge(d, e, by=0, all=TRUE) # merge by row names (by=0 or by="row.names")
R> de[is.na(de)] <- 0 # replace NA values
R> de
Row.names a b c d e f g h i j k l m n o p q r s
1 1 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10 11 12 13 14 15 16 17 18 19
2 2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 0 0 0 0 0 0 0 0
3 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 21 22 23 24 25 26 27 28 29
t
1 20
2 0
3 30
Using DataFlow as svick suggested may be overkill, and Stephen's answer does not provide the means to control the concurrency of the operation. However, that can be achieved rather simply:
public static async Task RunWithMaxDegreeOfConcurrency<T>(
int maxDegreeOfConcurrency, IEnumerable<T> collection, Func<T, Task> taskFactory)
{
var activeTasks = new List<Task>(maxDegreeOfConcurrency);
foreach (var task in collection.Select(taskFactory))
{
activeTasks.Add(task);
if (activeTasks.Count == maxDegreeOfConcurrency)
{
await Task.WhenAny(activeTasks.ToArray());
//observe exceptions here
activeTasks.RemoveAll(t => t.IsCompleted);
}
}
await Task.WhenAll(activeTasks.ToArray()).ContinueWith(t =>
{
//observe exceptions in a manner consistent with the above
});
}
The ToArray()
calls can be optimized by using an array instead of a list and replacing completed tasks, but I doubt it would make much of a difference in most scenarios. Sample usage per the OP's question:
RunWithMaxDegreeOfConcurrency(10, ids, async i =>
{
ICustomerRepo repo = new CustomerRepo();
var cust = await repo.GetCustomer(i);
customers.Add(cust);
});
EDIT Fellow SO user and TPL wiz Eli Arbel pointed me to a related article from Stephen Toub. As usual, his implementation is both elegant and efficient:
public static Task ForEachAsync<T>(
this IEnumerable<T> source, int dop, Func<T, Task> body)
{
return Task.WhenAll(
from partition in Partitioner.Create(source).GetPartitions(dop)
select Task.Run(async delegate {
using (partition)
while (partition.MoveNext())
await body(partition.Current).ContinueWith(t =>
{
//observe exceptions
});
}));
}
Same issues as others reported - using Excel 2016. Found that when applying conditional formulas against tables; AND, multiplying the conditions, and adding the conditions failed. Had to create the TRUE/FALSE logic myself:
=IF($C2="SomeText",0,1)+IF(INT($D2)>1000,0,1)=0
You can try a list comp
>>> exampleSet = [{'type':'type1'},{'type':'type2'},{'type':'type2'}, {'type':'type3'}]
>>> keyValList = ['type2','type3']
>>> expectedResult = [d for d in exampleSet if d['type'] in keyValList]
>>> expectedResult
[{'type': 'type2'}, {'type': 'type2'}, {'type': 'type3'}]
Another way is by using filter
>>> list(filter(lambda d: d['type'] in keyValList, exampleSet))
[{'type': 'type2'}, {'type': 'type2'}, {'type': 'type3'}]
Care and feeding of Eclipse's memory hunger is a pain...
More or less, keep trying smaller amounts til it works, that's your max.
As simple as it can be
Use $(this)
here too
$(document).on("click",".appDetails", function () {
var clickedBtnID = $(this).attr('id'); // or var clickedBtnID = this.id
alert('you clicked on button #' + clickedBtnID);
});
Ensure you have an index on your firstname and lastname columns and go with 1. This really won't have much of a performance impact at all.
EDIT: After @Dems comment regarding spamming the plan cache ,a better solution might be to create a computed column on the existing table (or a separate view) which contained a concatenated Firstname + Lastname value, thus allowing you to execute a query such as
SELECT City
FROM User
WHERE Fullname in (@fullnames)
where @fullnames
looks a bit like "'JonDoe', 'JaneDoe'"
etc
Did you restart the server after you changed the config file?
Can you telnet to the server from a different machine?
Can you telnet to the server from the server itself?
telnet <ip address> 80
telnet localhost 80
I implemented something like this, using pickle for persistance and using sha1 for short almost-certainly-unique IDs. Basically the cache hashed the code of the function and the hist of arguments to get a sha1 then looked for a file with that sha1 in the name. If it existed, it opened it and returned the result; if not, it calls the function and saves the result (optionally only saving if it took a certain amount of time to process).
That said, I'd swear I found an existing module that did this and find myself here trying to find that module... The closest I can find is this, which looks about right: http://chase-seibert.github.io/blog/2011/11/23/pythondjango-disk-based-caching-decorator.html
The only problem I see with that is it wouldn't work well for large inputs since it hashes str(arg), which isn't unique for giant arrays.
It would be nice if there were a unique_hash() protocol that had a class return a secure hash of its contents. I basically manually implemented that for the types I cared about.
I have used MySQL DB for Hive MetaStore. Please follow the below steps:
<property>
<name>javax.jdo.option.ConnectionURL</name>
<value>jdbc:mysql://localhost/metastorecreateDatabaseIfNotExist=true&useSSL=false</value>
</property>
mysql -u hduser -p
drop database metastore
schematool -initSchema dbType mysql
Now error will go.
I could solve this problem by adding the following content to my CSS file:
.ui-autocomplete {
max-height: 200px;
overflow-y: auto;
overflow-x: hidden;
}
This is one way (SQL2000)
SELECT * FROM
(
SELECT TOP (@pageSize) * FROM
(
SELECT TOP (@pageNumber * @pageSize) *
FROM tableName
ORDER BY columnName ASC
) AS t1
ORDER BY columnName DESC
) AS t2
ORDER BY columnName ASC
and this is another way (SQL 2005)
;WITH results AS (
SELECT
rowNo = ROW_NUMBER() OVER( ORDER BY columnName ASC )
, *
FROM tableName
)
SELECT *
FROM results
WHERE rowNo between (@pageNumber-1)*@pageSize+1 and @pageNumber*@pageSize
The protocol property sets or returns the protocol of the current URL, including the colon (:).
This means that if you want to get only the HTTP/HTTPS part you can do something like this:
var protocol = window.location.protocol.replace(/:/g,'')
For the domain you can use:
var domain = window.location.hostname;
For the port you can use:
var port = window.location.port;
Keep in mind that the port will be an empty string if it is not visible in the URL. For example:
If you need to show 80/443 when you have no port use
var port = window.location.port || (protocol === 'https' ? '443' : '80');
Take a look at http://git-scm.com/book/en/Git-Internals-Transfer-Protocols for info on how to do this over some transport protocols. Note this won't work for standard git over SSH.
For git over SSH, an up-to-date server-side git should allow you to git-archive directly from the remote, which you could then e.g. pipe to "tar t" to get a list of all files in a given commit.
Many of the answers here are useful, but I've found none of them to work on Android
, in particular. I'm even a pretty hefty user of Reflect
by joor, and neither it nor apache's FieldUtils
- both mentioned here in some of the answers, do the trick.
The fundamental reason why this is so is because on Android there's no modifiers
field in the Field
class, which renders any suggestion involving this code (as in the marked answer), useless:
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
In fact, to quote from FieldUtils.removeFinalModifier()
:
// Do all JREs implement Field with a private ivar called "modifiers"?
final Field modifiersField = Field.class.getDeclaredField("modifiers");
So, the answer is no...
Pretty easy - instead of modifiers
, the field name is accessFlags
. This does the trick:
Field accessFlagsField = Field.class.getDeclaredField("accessFlags");
accessFlagsField.setAccessible(true);
accessFlagsField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
Side-note #1: this can work regardless of whether the field is static in the class, or not.
Side-note #2: Seeing that the field itself could be private, it's recommended to also enable access over the field itself, using
field.setAccessible(true)
(in addition toaccessFlagsField.setAccessible(true)
.
Here is my simple and working function to generate a Bitmap! I Use ZXing1.3.jar only! I've also set Correction Level to High!
PS: x and y are reversed, it's normal, because bitMatrix reverse x and y. This code works perfectly with a square image.
public static Bitmap generateQrCode(String myCodeText) throws WriterException {
Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<EncodeHintType, ErrorCorrectionLevel>();
hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // H = 30% damage
QRCodeWriter qrCodeWriter = new QRCodeWriter();
int size = 256;
ByteMatrix bitMatrix = qrCodeWriter.encode(myCodeText,BarcodeFormat.QR_CODE, size, size, hintMap);
int width = bitMatrix.width();
Bitmap bmp = Bitmap.createBitmap(width, width, Bitmap.Config.RGB_565);
for (int x = 0; x < width; x++) {
for (int y = 0; y < width; y++) {
bmp.setPixel(y, x, bitMatrix.get(x, y)==0 ? Color.BLACK : Color.WHITE);
}
}
return bmp;
}
EDIT
It's faster to use bitmap.setPixels(...) with a pixel int array instead of bitmap.setPixel one by one:
BitMatrix bitMatrix = writer.encode(inputValue, BarcodeFormat.QR_CODE, size, size);
int width = bitMatrix.getWidth();
int height = bitMatrix.getHeight();
int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] = bitMatrix.get(x, y) ? BLACK : WHITE;
}
}
bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
Rapture seems to be missing in the list of the answers. It can be obtained from http://rapture.io/ and allows you (among other thing) to:
I don't want to copy/paste Rapture examples from it's page. A nice presentation about Rapture's features was given by Jon Pretty at SBTB 2014: https://www.youtube.com/watch?v=ka5-OLJgybI
You get the error because order[1]
is undefined
.
That error message means that somewhere in your code, an attempt is being made to access a property with some name (here it's "push"), but instead of an object, the base for the reference is actually undefined
. Thus, to find the problem, you'd look for code that refers to that property name ("push"), and see what's to the left of it. In this case, the code is
if(parseInt(a[i].daysleft) > 0){ order[1].push(a[i]); }
which means that the code expects order[1]
to be an array. It is, however, not an array; it's undefined
, so you get the error. Why is it undefined
? Well, your code doesn't do anything to make it anything else, based on what's in your question.
Now, if you just want to place a[i]
in a particular property of the object, then there's no need to call .push()
at all:
var order = [], stack = [];
for(var i=0;i<a.length;i++){
if(parseInt(a[i].daysleft) == 0){ order[0] = a[i]; }
if(parseInt(a[i].daysleft) > 0){ order[1] = a[i]; }
if(parseInt(a[i].daysleft) < 0){ order[2] = a[i]; }
}
If you really want to do this, create an HttpServletRequestWrapper.
public class AddableHttpRequest extends HttpServletRequestWrapper {
private HashMap params = new HashMap();
public AddableingHttpRequest(HttpServletRequest request) {
super(request);
}
public String getParameter(String name) {
// if we added one, return that one
if ( params.get( name ) != null ) {
return params.get( name );
}
// otherwise return what's in the original request
HttpServletRequest req = (HttpServletRequest) super.getRequest();
return validate( name, req.getParameter( name ) );
}
public void addParameter( String name, String value ) {
params.put( name, value );
}
}
In my case i have used .woff files from git repository, and i noticed git has changed my binary files. That with some null character at the file endings. I have rechanged to the orgnal .woff source files and it has corrected!
Also i have understood visual studio controller sending corrupted error like ERR_CONNECTION_RESET from the controller when it gots null character
I shared for all who live this problem
Change your || to && so it will only exit if the answer is NEITHER "AM" nor "PM".
If your lines are multiple points instead, you can use this version.
import numpy as np
import matplotlib.pyplot as plt
"""
Sukhbinder
5 April 2017
Based on:
"""
def _rect_inter_inner(x1,x2):
n1=x1.shape[0]-1
n2=x2.shape[0]-1
X1=np.c_[x1[:-1],x1[1:]]
X2=np.c_[x2[:-1],x2[1:]]
S1=np.tile(X1.min(axis=1),(n2,1)).T
S2=np.tile(X2.max(axis=1),(n1,1))
S3=np.tile(X1.max(axis=1),(n2,1)).T
S4=np.tile(X2.min(axis=1),(n1,1))
return S1,S2,S3,S4
def _rectangle_intersection_(x1,y1,x2,y2):
S1,S2,S3,S4=_rect_inter_inner(x1,x2)
S5,S6,S7,S8=_rect_inter_inner(y1,y2)
C1=np.less_equal(S1,S2)
C2=np.greater_equal(S3,S4)
C3=np.less_equal(S5,S6)
C4=np.greater_equal(S7,S8)
ii,jj=np.nonzero(C1 & C2 & C3 & C4)
return ii,jj
def intersection(x1,y1,x2,y2):
"""
INTERSECTIONS Intersections of curves.
Computes the (x,y) locations where two curves intersect. The curves
can be broken with NaNs or have vertical segments.
usage:
x,y=intersection(x1,y1,x2,y2)
Example:
a, b = 1, 2
phi = np.linspace(3, 10, 100)
x1 = a*phi - b*np.sin(phi)
y1 = a - b*np.cos(phi)
x2=phi
y2=np.sin(phi)+2
x,y=intersection(x1,y1,x2,y2)
plt.plot(x1,y1,c='r')
plt.plot(x2,y2,c='g')
plt.plot(x,y,'*k')
plt.show()
"""
ii,jj=_rectangle_intersection_(x1,y1,x2,y2)
n=len(ii)
dxy1=np.diff(np.c_[x1,y1],axis=0)
dxy2=np.diff(np.c_[x2,y2],axis=0)
T=np.zeros((4,n))
AA=np.zeros((4,4,n))
AA[0:2,2,:]=-1
AA[2:4,3,:]=-1
AA[0::2,0,:]=dxy1[ii,:].T
AA[1::2,1,:]=dxy2[jj,:].T
BB=np.zeros((4,n))
BB[0,:]=-x1[ii].ravel()
BB[1,:]=-x2[jj].ravel()
BB[2,:]=-y1[ii].ravel()
BB[3,:]=-y2[jj].ravel()
for i in range(n):
try:
T[:,i]=np.linalg.solve(AA[:,:,i],BB[:,i])
except:
T[:,i]=np.NaN
in_range= (T[0,:] >=0) & (T[1,:] >=0) & (T[0,:] <=1) & (T[1,:] <=1)
xy0=T[2:,in_range]
xy0=xy0.T
return xy0[:,0],xy0[:,1]
if __name__ == '__main__':
# a piece of a prolate cycloid, and am going to find
a, b = 1, 2
phi = np.linspace(3, 10, 100)
x1 = a*phi - b*np.sin(phi)
y1 = a - b*np.cos(phi)
x2=phi
y2=np.sin(phi)+2
x,y=intersection(x1,y1,x2,y2)
plt.plot(x1,y1,c='r')
plt.plot(x2,y2,c='g')
plt.plot(x,y,'*k')
plt.show()
There is a library named Picasso which can efficiently load images from a URL. It can also load an image from a file.
Examples:
Load URL into ImageView without generating a bitmap:
Picasso.with(context) // Context
.load("http://abc.imgur.com/gxsg.png") // URL or file
.into(imageView); // An ImageView object to show the loaded image
Load URL into ImageView by generating a bitmap:
Picasso.with(this)
.load(artistImageUrl)
.into(new Target() {
@Override
public void onBitmapLoaded(final Bitmap bitmap, Picasso.LoadedFrom from) {
/* Save the bitmap or do something with it here */
// Set it in the ImageView
theView.setImageBitmap(bitmap)
}
@Override
public void onBitmapFailed(Drawable errorDrawable) {
}
@Override
public void onPrepareLoad(Drawable placeHolderDrawable) {
}
});
There are many more options available in Picasso. Here is the documentation.
each_with_object
is your friend!
input = [:bla,:blubb,:bleh,:bla,:bleh,:bla,:blubb,:brrr]
# to get the counts of the elements in the array:
> input.each_with_object({}){|x,h| h[x] ||= 0; h[x] += 1}
=> {:bla=>3, :blubb=>2, :bleh=>2, :brrr=>1}
# to get only the counts of the non-unique elements in the array:
> input.each_with_object({}){|x,h| h[x] ||= 0; h[x] += 1}.reject{|k,v| v < 2}
=> {:bla=>3, :blubb=>2, :bleh=>2}
Inside Activity, you can use
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
toolbar.setTitleTextColor(getResources().getColor(android.R.color.white));
If you love to choose xml for both title color & back arrow white just add this style in style.xml .
<style name="ToolBarStyle" parent="Theme.AppCompat">
<item name="android:textColorPrimary">@android:color/white</item>
<item name="android:textColorSecondary">@android:color/white</item>
<item name="actionMenuTextColor">@android:color/white</item>
</style>
And toolbar look like :
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
app:theme="@style/ToolBarStyle"
android:layout_height="?attr/actionBarSize"
/>
Yes you can.
You just need to understand what they are for, the class
is more general and can be used several times, the id
(is like your id's) you can use it only once.
This excellent tutorial helped me with that:
The Difference Between ID and Class
Though it's not an exact answer to your question I'm sure it will help you a lot!
Good luck!
EDIT: Reading your question, I just want to clarify that:
<div class="x" id="y">
--
</div>
And that if you want to "use them" in CSS for styling purposes you should do as David Says: #x.y { }
What about angular-scroll, it's actively maintained and there is no dependency to jQuery..
You can simulate a readonly select box using the CSS pointer-events property:
select[readonly]
{
pointer-events: none;
}
The HTML tabindex property will also prevent it from being selected by keyboard tabbing:
<select tabindex="-1">
select[readonly]_x000D_
{_x000D_
pointer-events: none;_x000D_
}_x000D_
_x000D_
_x000D_
/* irrelevent styling */_x000D_
_x000D_
*_x000D_
{_x000D_
box-sizing: border-box;_x000D_
}_x000D_
_x000D_
*[readonly]_x000D_
{_x000D_
background: #fafafa;_x000D_
border: 1px solid #ccc;_x000D_
color: #555;_x000D_
}_x000D_
_x000D_
input, select_x000D_
{_x000D_
display:block;_x000D_
width: 20rem;_x000D_
padding: 0.5rem;_x000D_
margin-bottom: 1rem;_x000D_
}
_x000D_
<form>_x000D_
<input type="text" value="this is a normal text box">_x000D_
<input type="text" readonly value="this is a readonly text box">_x000D_
<select readonly tabindex="-1">_x000D_
<option>This is a readonly select box</option>_x000D_
<option>Option 2</option>_x000D_
</select>_x000D_
<select>_x000D_
<option>This is a normal select box</option>_x000D_
<option>Option 2</option>_x000D_
</select>_x000D_
</form>
_x000D_
I created a string extension for this, hope it helps.
public static string GetStringAfterChar(this string value, char substring)
{
if (!string.IsNullOrWhiteSpace(value))
{
var index = value.LastIndexOf(substring);
return index > 0 ? value.Substring(index + 1) : value;
}
return string.Empty;
}
UTF-8 is prepared for world domination, Latin1 isn't.
If you're trying to store non-Latin characters like Chinese, Japanese, Hebrew, Russian, etc using Latin1 encoding, then they will end up as mojibake. You may find the introductory text of this article useful (and even more if you know a bit Java).
Note that full 4-byte UTF-8 support was only introduced in MySQL 5.5. Before that version, it only goes up to 3 bytes per character, not 4 bytes per character. So, it supported only the BMP plane and not e.g. the Emoji plane. If you want full 4-byte UTF-8 support, upgrade MySQL to at least 5.5 or go for another RDBMS like PostgreSQL. In MySQL 5.5+ it's called utf8mb4
.
I have resolved it , this way
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
public class DateParser {
public static void main(String args[]) throws Exception {
DateParser dateParser = new DateParser();
String str = dateParser.getparsedDate("2012-11-17T00:00:00.000-05:00");
System.out.println(str);
}
private String getparsedDate(String date) throws Exception {
DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.US);
String s1 = date;
String s2 = null;
Date d;
try {
d = sdf.parse(s1);
s2 = (new SimpleDateFormat("MM/yyyy")).format(d);
} catch (ParseException e) {
e.printStackTrace();
}
return s2;
}
}
Date.parse
supports the format mm/dd/yyyy
not dd/mm/yyyy
. For the latter, either use a library like moment.js or do something as shown below
var dateFrom = "02/05/2013";
var dateTo = "02/09/2013";
var dateCheck = "02/07/2013";
var d1 = dateFrom.split("/");
var d2 = dateTo.split("/");
var c = dateCheck.split("/");
var from = new Date(d1[2], parseInt(d1[1])-1, d1[0]); // -1 because months are from 0 to 11
var to = new Date(d2[2], parseInt(d2[1])-1, d2[0]);
var check = new Date(c[2], parseInt(c[1])-1, c[0]);
console.log(check > from && check < to)
To run tests with node/npm without installing Mocha globally, you can do this:
• Install Mocha locally to your project (npm install mocha --save-dev
)
• Optionally install an assertion library (npm install chai --save-dev
)
• In your package.json
, add a section for scripts
and target the mocha binary
"scripts": {
"test": "node ./node_modules/mocha/bin/mocha"
}
• Put your spec files in a directory named /test
in your root directory
• In your spec files, import the assertion library
var expect = require('chai').expect;
• You don't need to import mocha, run mocha.setup
, or call mocha.run()
• Then run the script from your project root:
npm test
Your [hidden] will work but you need to check the css:
<input class="txt" type="password" [(ngModel)]="input_pw" [hidden]="isHidden" />
And the css:
[hidden] {
display: none !important;
}
That should work as you want.
My problem was installing the Android SDK in Eclipse Helios on Windows 7 Enterprise 64bit, I was getting the following error:
Missing requirement: Android Development Tools 0.9.7.v201005071157-36220 (com.android.ide.eclipse.adt.feature.group 0.9.7.v201005071157-36220) requires 'org.eclipse.jdt.junit 0.0.0' but it could not be found
Having followed the advice above to ensure that the JDK was in my PATH variable (it wasn't), installation went smoothly. I guess the error was somewhat spurious (incidentally if you're looking for the JARs that correspond to that class, they were in my profile rather than the Eclipse installation directory)
So, check that PATH variable!
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:MM");
simpleDateFormat.format(fajr_prayertime);
Explain difference of
extract()
explode()
implode()
you should give permission on your db
grant execute on (packageName or tableName) to user;
swift 4
In viewDidLoad():
//ADD BUTTON TO DISMISS KEYBOARD
// Init a keyboard toolbar
let toolbar = UIView(frame: CGRect(x: 0, y: view.frame.size.height+44, width: view.frame.size.width, height: 44))
toolbar.backgroundColor = UIColor.clear
// Add done button
let doneButt = UIButton(frame: CGRect(x: toolbar.frame.size.width - 60, y: 0, width: 44, height: 44))
doneButt.setTitle("Done", for: .normal)
doneButt.setTitleColor(MAIN_COLOR, for: .normal)
doneButt.titleLabel?.font = UIFont(name: "Titillium-Semibold", size: 13)
doneButt.addTarget(self, action: #selector(dismissKeyboard), for: .touchUpInside)
toolbar.addSubview(doneButt)
USDTextField.inputAccessoryView = toolbar
Add this function:
@objc func dismissKeyboard() {
//Causes the view (or one of its embedded text fields) to resign the first responder status.
view.endEditing(true)
}
By writing your client code in terms of iterators you abstract away the container completely.
Consider this code:
class ExpressionParser // some generic arbitrary expression parser
{
public:
template<typename It>
void parse(It begin, const It end)
{
using namespace std;
using namespace std::placeholders;
for_each(begin, end,
bind(&ExpressionParser::process_next, this, _1);
}
// process next char in a stream (defined elsewhere)
void process_next(char c);
};
client code:
ExpressionParser p;
std::string expression("SUM(A) FOR A in [1, 2, 3, 4]");
p.parse(expression.begin(), expression.end());
std::istringstream file("expression.txt");
p.parse(std::istringstream<char>(file), std::istringstream<char>());
char expr[] = "[12a^2 + 13a - 5] with a=108";
p.parse(std::begin(expr), std::end(expr));
Edit: Consider your original code example, implemented with :
using namespace std;
vector<int> myIntVector;
// Add some elements to myIntVector
myIntVector.push_back(1);
myIntVector.push_back(4);
myIntVector.push_back(8);
copy(myIntVector.begin(), myIntVector.end(),
std::ostream_iterator<int>(cout, " "));
Xcode 8.3.1, Swift 3.1
Read write value from different threads (async).
class AsyncObject<T>:CustomStringConvertible {
private var _value: T
public private(set) var dispatchQueueName: String
let dispatchQueue: DispatchQueue
init (value: T, dispatchQueueName: String) {
_value = value
self.dispatchQueueName = dispatchQueueName
dispatchQueue = DispatchQueue(label: dispatchQueueName)
}
func setValue(with closure: @escaping (_ currentValue: T)->(T) ) {
dispatchQueue.sync { [weak self] in
if let _self = self {
_self._value = closure(_self._value)
}
}
}
func getValue(with closure: @escaping (_ currentValue: T)->() ) {
dispatchQueue.sync { [weak self] in
if let _self = self {
closure(_self._value)
}
}
}
var value: T {
get {
return dispatchQueue.sync { _value }
}
set (newValue) {
dispatchQueue.sync { _value = newValue }
}
}
var description: String {
return "\(_value)"
}
}
print("Single read/write action")
// Use it when when you need to make single action
let obj = AsyncObject<Int>(value: 0, dispatchQueueName: "Dispatch0")
obj.value = 100
let x = obj.value
print(x)
print("Write action in block")
// Use it when when you need to make many action
obj.setValue{ (current) -> (Int) in
let newValue = current*2
print("previous: \(current), new: \(newValue)")
return newValue
}
extension DispatchGroup
extension DispatchGroup {
class func loop(repeatNumber: Int, action: @escaping (_ index: Int)->(), completion: @escaping ()->()) {
let group = DispatchGroup()
for index in 0...repeatNumber {
group.enter()
DispatchQueue.global(qos: .utility).async {
action(index)
group.leave()
}
}
group.notify(queue: DispatchQueue.global(qos: .userInitiated)) {
completion()
}
}
}
class ViewController
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//sample1()
sample2()
}
func sample1() {
print("=================================================\nsample with variable")
let obj = AsyncObject<Int>(value: 0, dispatchQueueName: "Dispatch1")
DispatchGroup.loop(repeatNumber: 5, action: { index in
obj.value = index
}) {
print("\(obj.value)")
}
}
func sample2() {
print("\n=================================================\nsample with array")
let arr = AsyncObject<[Int]>(value: [], dispatchQueueName: "Dispatch2")
DispatchGroup.loop(repeatNumber: 15, action: { index in
arr.setValue{ (current) -> ([Int]) in
var array = current
array.append(index*index)
print("index: \(index), value \(array[array.count-1])")
return array
}
}) {
print("\(arr.value)")
}
}
}
This one works with copy and paste, drag and drop, key down, prevents overflow and is pretty simple
public partial class IntegerBox : TextBox
{
public IntegerBox()
{
InitializeComponent();
this.Text = 0.ToString();
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
}
private String originalValue = 0.ToString();
private void Integerbox_KeyPress(object sender, KeyPressEventArgs e)
{
originalValue = this.Text;
}
private void Integerbox_TextChanged(object sender, EventArgs e)
{
try
{
if(String.IsNullOrWhiteSpace(this.Text))
{
this.Text = 0.ToString();
}
this.Text = Convert.ToInt64(this.Text.Trim()).ToString();
}
catch (System.OverflowException)
{
MessageBox.Show("Value entered is to large max value: " + Int64.MaxValue.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
this.Text = originalValue;
}
catch (System.FormatException)
{
this.Text = originalValue;
}
catch (System.Exception ex)
{
this.Text = originalValue;
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK , MessageBoxIcon.Error);
}
}
}
I use Restler and Needle for production purposes. They are both much more powerful than native httprequest. It is possible to request with basic authentication, special header entry or even upload/download files.
As for post/get operation, they also are much simpler to use than raw ajax calls using httprequest.
needle.post('https://my.app.com/endpoint', {foo:'bar'},
function(err, resp, body){
console.log(body);
});
An easy way to split lists into rows is by floating the individual list items and then the item that you want to go to the next line you can clear the float.
for example
<li style="float: left; display: inline-block"></li>
<li style="float: left; display: inline-block"></li>
<li style="float: left; display: inline-block"></li>
<li style="float: left; display: inline-block; clear: both"></li> --- this will start on a new line
<li style="float: left; display: inline-block"></li>
<li style="float: left; display: inline-block"></li>
Do not send email to 5,000 people using standard PHP tools. You'll get banned by most ISPs in seconds and never even know it. You should either use some mailing lists software or an Email Service Provider do to this.
This is significantly faster than the EXISTS
way:
SELECT [EmailAddress], [CustomerName] FROM [Customers] WHERE [EmailAddress] IN
(SELECT [EmailAddress] FROM [Customers] GROUP BY [EmailAddress] HAVING COUNT(*) > 1)
I had the same problem once this is how I solved it.
Suppose I want 12 delays with an interval of 2 secs
function animate(i){
myVar=setTimeout(function(){
alert(i);
if(i==12){
clearTimeout(myVar);
return;
}
animate(i+1)
},2000)
}
var i=1; //i is the start point 1 to 12 that is
animate(i); //1,2,3,4..12 will be alerted with 2 sec delay
You may consider using configure_file with the COPYONLY
option:
configure_file(<input> <output> COPYONLY)
Unlike file(COPY ...)
it creates a file-level dependency between input and output, that is:
If the input file is modified the build system will re-run CMake to re-configure the file and generate the build system again.
Here is another option
$array = [1=>'one', 2=>'two', 3=>'there'];
$array = array_flip($array);
echo $array['one'];
Here is my code for get only date:
Calendar c=Calendar.getInstance();
DateFormat dm = new SimpleDateFormat("dd/MM/yyyy");
java.util.Date date = new java.util.Date();
System.out.println("current date is : " + dm.format(date));
Actually one detail is missing from the answer that is selected as accepted (from Phil Ross)....
it DOES work in Chrome, and the solution is really silly!!
Both the parent and the element onto which you want to control page-breaking must be declared as:
position: relative
check out this fiddle: http://jsfiddle.net/petersphilo/QCvA5/5/show/
This is true for:
page-break-before
page-break-after
page-break-inside
However, controlling page-break-inside in Safari does not work (in 5.1.7, at least)
i hope this helps!!!
PS: The question below brought up that fact that recent versions of Chrome no longer respect this, even with the position: relative; trick. However, they do seem to respect:
-webkit-region-break-inside: avoid;
see this fiddle: http://jsfiddle.net/petersphilo/QCvA5/23/show
so i guess we have to add that now...
Hope this helps!
Well, I see too many complicated answers. I don't want to pass the output of find utility or to write a loop , because find has "exec" option for this.
My problem was that I wanted to move all files with dbf extension to the current folder and some of them contained white space.
I tackled it so:
find . -name \*.dbf -print0 -exec mv '{}' . ';'
Looks much simple for me
$(document).ready(function () {
$('#allot').click(function () {
if ($(this).is(':checked')) {
alert("Allot Thai Gayo Bhai");
}
});
$('#transfer').click(function () {
if ($(this).is(':checked')) {
alert("Transfer Thai Gayo");
}
});
});
There is the concatenate function. For example
=CONCATENATE(E2,"-",F2)But the & operator always concatenates strings. + often will work, but if there is a number in one of the cells, it won't work as expected.
there are three ways you can use: the RETURN value, and OUTPUT parameter and a result set
ALSO, watch out if you use the pattern: SELECT @Variable=column FROM table ...
if there are multiple rows returned from the query, your @Variable will only contain the value from the last row returned by the query.
RETURN VALUE
since your query returns an int field, at least based on how you named it. you can use this trick:
CREATE PROCEDURE GetMyInt
( @Param int)
AS
DECLARE @ReturnValue int
SELECT @ReturnValue=MyIntField FROM MyTable WHERE MyPrimaryKeyField = @Param
RETURN @ReturnValue
GO
and now call your procedure like:
DECLARE @SelectedValue int
,@Param int
SET @Param=1
EXEC @SelectedValue = GetMyInt @Param
PRINT @SelectedValue
this will only work for INTs, because RETURN can only return a single int value and nulls are converted to a zero.
OUTPUT PARAMETER
you can use an output parameter:
CREATE PROCEDURE GetMyInt
( @Param int
,@OutValue int OUTPUT)
AS
SELECT @OutValue=MyIntField FROM MyTable WHERE MyPrimaryKeyField = @Param
RETURN 0
GO
and now call your procedure like:
DECLARE @SelectedValue int
,@Param int
SET @Param=1
EXEC GetMyInt @Param, @SelectedValue OUTPUT
PRINT @SelectedValue
Output parameters can only return one value, but can be any data type
RESULT SET for a result set make the procedure like:
CREATE PROCEDURE GetMyInt
( @Param int)
AS
SELECT MyIntField FROM MyTable WHERE MyPrimaryKeyField = @Param
RETURN 0
GO
use it like:
DECLARE @ResultSet table (SelectedValue int)
DECLARE @Param int
SET @Param=1
INSERT INTO @ResultSet (SelectedValue)
EXEC GetMyInt @Param
SELECT * FROM @ResultSet
result sets can have many rows and many columns of any data type
HTML : Pass the whole body inside on click
div class="calculate" id="calculate">
<div class="button" id="button" onclick="myCode(this.body)"> CALCULATE ! </div>
</div>
Then write the JavaScript code inside the function "myCode()"
function myCode()
{
var bill = document.getElementById("currency").value ;
var people_count = document.getElementById("number1").value;
var select_value = document.getElementById("select").value;
var calculate = document.getElementById("calculate");
calculate.addEventListener("click" ,function()
{
console.log(bill);
console.log(people_count);
console.log(select_value);
});
}
you will get your values I am using visual studio code editor
If you want to use standard Flask stuff - there's no way to avoid saving a temporary file if the uploaded file size is > 500kb. If it's smaller than 500kb - it will use "BytesIO", which stores the file content in memory, and if it's more than 500kb - it stores the contents in TemporaryFile() (as stated in the werkzeug documentation). In both cases your script will block until the entirety of uploaded file is received.
The easiest way to work around this that I have found is:
1) Create your own file-like IO class where you do all the processing of the incoming data
2) In your script, override Request class with your own:
class MyRequest( Request ):
def _get_file_stream( self, total_content_length, content_type, filename=None, content_length=None ):
return MyAwesomeIO( filename, 'w' )
3) Replace Flask's request_class with your own:
app.request_class = MyRequest
4) Go have some beer :)
head -10 log.txt | grep -A 2 -B 2 pattern_to_search
-A 2
: print two lines before the pattern.
-B 2
: print two lines after the pattern.
head -10 log.txt # read the first 10 lines of the file.
lets put this in a simple term. An element is a set of opening and closing tags in use.
Element
<h1>...</h1>
Tag H1 opening tag
<h1>
H1 closing tag
</h1>
using System.Diagnostics;
class Program
{
static void Main()
{
Process.Start("C:\\");
}
}
If your application needs cmd arguments, use something like this:
using System.Diagnostics;
class Program
{
static void Main()
{
LaunchCommandLineApp();
}
/// <summary>
/// Launch the application with some options set.
/// </summary>
static void LaunchCommandLineApp()
{
// For the example
const string ex1 = "C:\\";
const string ex2 = "C:\\Dir";
// Use ProcessStartInfo class
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.CreateNoWindow = false;
startInfo.UseShellExecute = false;
startInfo.FileName = "dcm2jpg.exe";
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.Arguments = "-f j -o \"" + ex1 + "\" -z 1.0 -s y " + ex2;
try
{
// Start the process with the info we specified.
// Call WaitForExit and then the using statement will close.
using (Process exeProcess = Process.Start(startInfo))
{
exeProcess.WaitForExit();
}
}
catch
{
// Log error.
}
}
}
Is to do with IPv6
All the gory details here: http://www.microsoft.com/technet/network/ipv6/teredo.mspx
Some people have had issues with it, and disabled it, but as a general rule, if it aint broke...
As it wasn't mentioned in any answers, just in case you want to align and space your text, you can use the string format features. (above python 2.5) Of course \t
is actually a TAB token whereas the described method generates spaces.
Example:
print "{0:30} {1}".format("hi", "yes")
> hi yes
Another Example, left aligned:
print("{0:<10} {1:<10} {2:<10}".format(1.0, 2.2, 4.4))
>1.0 2.2 4.4
If you use one of custom view's solutions, be careful, because they often fail on long or multiline text. I rewrote some answers, replaced onDraw()
and understood that that was a wrong way.
I have a lib what use https://requests.readthedocs.io/en/master/ what use https://pypi.org/project/certifi/ but I have a custom CA included in my /etc/ssl/certs
.
So I solved my problem like this:
# Your TLS certificates directory (Debian like)
export SSL_CERT_DIR=/etc/ssl/certs
# CA bundle PATH (Debian like again)
export CA_BUNDLE_PATH="${SSL_CERT_DIR}/ca-certificates.crt"
# If you have a virtualenv:
. ./.venv/bin/activate
# Get the current certifi CA bundle
CERTFI_PATH=`python -c 'import certifi; print(certifi.where())'`
test -L $CERTFI_PATH || rm $CERTFI_PATH
test -L $CERTFI_PATH || ln -s $CA_BUNDLE_PATH $CERTFI_PATH
Et voilà !
swift solution
yourlabel.text = yourvariable
or self is use for when you are in async {brackets} or in some Extension
DispatchQueue.main.async{
self.yourlabel.text = "typestring"
}
I ended up using matplotlib :)
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
import matplotlib.pyplot as plt
import numpy as np
x = [1000,1000,1000,1000,1000,5000,5000,5000,5000,5000,10000,10000,10000,10000,10000]
y = [13,21,29,37,45,13,21,29,37,45,13,21,29,37,45]
z = [75.2,79.21,80.02,81.2,81.62,84.79,87.38,87.9,88.54,88.56,88.34,89.66,90.11,90.79,90.87]
fig = plt.figure()
ax = fig.gca(projection='3d')
ax.plot_trisurf(x, y, z, cmap=cm.jet, linewidth=0.2)
plt.show()
Starting from the decoded base64 data of an OpenSSL rsa-ssh Key, i've been able to guess a format:
00 00 00 07
: four byte length prefix (7 bytes)73 73 68 2d 72 73 61
: "ssh-rsa"00 00 00 01
: four byte length prefix (1 byte)25
: RSA Exponent (e
): 2500 00 01 00
: four byte length prefix (256 bytes)RSA Modulus (n
):
7f 9c 09 8e 8d 39 9e cc d5 03 29 8b c4 78 84 5f
d9 89 f0 33 df ee 50 6d 5d d0 16 2c 73 cf ed 46
dc 7e 44 68 bb 37 69 54 6e 9e f6 f0 c5 c6 c1 d9
cb f6 87 78 70 8b 73 93 2f f3 55 d2 d9 13 67 32
70 e6 b5 f3 10 4a f5 c3 96 99 c2 92 d0 0f 05 60
1c 44 41 62 7f ab d6 15 52 06 5b 14 a7 d8 19 a1
90 c6 c1 11 f8 0d 30 fd f5 fc 00 bb a4 ef c9 2d
3f 7d 4a eb d2 dc 42 0c 48 b2 5e eb 37 3c 6c a0
e4 0a 27 f0 88 c4 e1 8c 33 17 33 61 38 84 a0 bb
d0 85 aa 45 40 cb 37 14 bf 7a 76 27 4a af f4 1b
ad f0 75 59 3e ac df cd fc 48 46 97 7e 06 6f 2d
e7 f5 60 1d b1 99 f8 5b 4f d3 97 14 4d c5 5e f8
76 50 f0 5f 37 e7 df 13 b8 a2 6b 24 1f ff 65 d1
fb c8 f8 37 86 d6 df 40 e2 3e d3 90 2c 65 2b 1f
5c b9 5f fa e9 35 93 65 59 6d be 8c 62 31 a9 9b
60 5a 0e e5 4f 2d e6 5f 2e 71 f3 7e 92 8f fe 8b
The closest validation of my theory i can find it from RFC 4253:
The "ssh-rsa" key format has the following specific encoding:
string "ssh-rsa" mpint e mpint n
Here the 'e' and 'n' parameters form the signature key blob.
But it doesn't explain the length prefixes.
Taking the random RSA PUBLIC KEY
i found (in the question), and decoding the base64 into hex:
30 82 01 0a 02 82 01 01 00 fb 11 99 ff 07 33 f6 e8 05 a4 fd 3b 36 ca 68
e9 4d 7b 97 46 21 16 21 69 c7 15 38 a5 39 37 2e 27 f3 f5 1d f3 b0 8b 2e
11 1c 2d 6b bf 9f 58 87 f1 3a 8d b4 f1 eb 6d fe 38 6c 92 25 68 75 21 2d
dd 00 46 87 85 c1 8a 9c 96 a2 92 b0 67 dd c7 1d a0 d5 64 00 0b 8b fd 80
fb 14 c1 b5 67 44 a3 b5 c6 52 e8 ca 0e f0 b6 fd a6 4a ba 47 e3 a4 e8 94
23 c0 21 2c 07 e3 9a 57 03 fd 46 75 40 f8 74 98 7b 20 95 13 42 9a 90 b0
9b 04 97 03 d5 4d 9a 1c fe 3e 20 7e 0e 69 78 59 69 ca 5b f5 47 a3 6b a3
4d 7c 6a ef e7 9f 31 4e 07 d9 f9 f2 dd 27 b7 29 83 ac 14 f1 46 67 54 cd
41 26 25 16 e4 a1 5a b1 cf b6 22 e6 51 d3 e8 3f a0 95 da 63 0b d6 d9 3e
97 b0 c8 22 a5 eb 42 12 d4 28 30 02 78 ce 6b a0 cc 74 90 b8 54 58 1f 0f
fb 4b a3 d4 23 65 34 de 09 45 99 42 ef 11 5f aa 23 1b 15 15 3d 67 83 7a
63 02 03 01 00 01
From RFC3447 - Public-Key Cryptography Standards (PKCS) #1: RSA Cryptography Specifications Version 2.1:
A.1.1 RSA public key syntax
An RSA public key should be represented with the ASN.1 type
RSAPublicKey
:RSAPublicKey ::= SEQUENCE { modulus INTEGER, -- n publicExponent INTEGER -- e }
The fields of type RSAPublicKey have the following meanings:
- modulus is the RSA modulus n.
- publicExponent is the RSA public exponent e.
Using Microsoft's excellent (and the only real) ASN.1 documentation:
30 82 01 0a ;SEQUENCE (0x010A bytes: 266 bytes)
| 02 82 01 01 ;INTEGER (0x0101 bytes: 257 bytes)
| | 00 ;leading zero because high-bit, but number is positive
| | fb 11 99 ff 07 33 f6 e8 05 a4 fd 3b 36 ca 68
| | e9 4d 7b 97 46 21 16 21 69 c7 15 38 a5 39 37 2e 27 f3 f5 1d f3 b0 8b 2e
| | 11 1c 2d 6b bf 9f 58 87 f1 3a 8d b4 f1 eb 6d fe 38 6c 92 25 68 75 21 2d
| | dd 00 46 87 85 c1 8a 9c 96 a2 92 b0 67 dd c7 1d a0 d5 64 00 0b 8b fd 80
| | fb 14 c1 b5 67 44 a3 b5 c6 52 e8 ca 0e f0 b6 fd a6 4a ba 47 e3 a4 e8 94
| | 23 c0 21 2c 07 e3 9a 57 03 fd 46 75 40 f8 74 98 7b 20 95 13 42 9a 90 b0
| | 9b 04 97 03 d5 4d 9a 1c fe 3e 20 7e 0e 69 78 59 69 ca 5b f5 47 a3 6b a3
| | 4d 7c 6a ef e7 9f 31 4e 07 d9 f9 f2 dd 27 b7 29 83 ac 14 f1 46 67 54 cd
| | 41 26 25 16 e4 a1 5a b1 cf b6 22 e6 51 d3 e8 3f a0 95 da 63 0b d6 d9 3e
| | 97 b0 c8 22 a5 eb 42 12 d4 28 30 02 78 ce 6b a0 cc 74 90 b8 54 58 1f 0f
| | fb 4b a3 d4 23 65 34 de 09 45 99 42 ef 11 5f aa 23 1b 15 15 3d 67 83 7a
| | 63
| 02 03 ;INTEGER (3 bytes)
| 01 00 01
giving the public key modulus and exponent:
0xfb1199ff0733f6e805a4fd3b36ca68...837a63
Only for modification time
if test `find "text.txt" -mmin +120`
then
echo old enough
fi
You can use -cmin
for change or -amin
for access time. As others pointed I don’t think you can track creation time.
Sorting by C and D needs to be put into number form for the corresponding column, ie 3 and 4, respectively. Eg Order By 2 asc")
Here's a plain Javascript way of doing toggle:
<script>
var toggle = function() {
var mydiv = document.getElementById('newpost');
if (mydiv.style.display === 'block' || mydiv.style.display === '')
mydiv.style.display = 'none';
else
mydiv.style.display = 'block'
}
</script>
<div id="newpost">asdf</div>
<input type="button" value="btn" onclick="toggle();">
After the configure step you probably have a makefile. Inside this makefile look for CFLAGS (or similar). puf -fPIC at the end and run make again. In other words -fPIC is a compiler option that has to be passed to the compiler somewhere.
This is happening due to the fact that the logging level of your logger is set to 'error' - therefore you will only see error messages or above this level in terms of severity so this is why you also see the 'fatal' message.
If you set the logging level to 'debug' on your logger in your log4j.xml you should see all messages.
Have a look at the log4j introduction for explaination.
I did this in my project and it works like a charm
Date now = new Date();
System.out.println(now);
TimeZone.setDefault(TimeZone.getTimeZone("UTC")); // The magic is here
System.out.println(now);
Java implementation contains utilities classes java.util.Arrays and java.util.Collections both of them contains static factory methods, examples of it and how to use :
Arrays.asList("1","2","3")
Collections.synchronizedList(..), Collections.emptyList(), Collections.unmodifiableList(...)
(Only some examples, could check javadocs for mor methods examples https://docs.oracle.com/javase/8/docs/api/java/util/Collections.html)
Also java.lang.String class have such static factory methods:
String.format(...), String.valueOf(..), String.copyValueOf(...)
Use string
instead of string?
in all places in your code.
The Nullable<T>
type requires that T is a non-nullable value type, for example int
or DateTime
. Reference types like string
can already be null. There would be no point in allowing things like Nullable<string>
so it is disallowed.
Also if you are using C# 3.0 or later you can simplify your code by using auto-implemented properties:
public class WordAndMeaning
{
public string Word { get; set; }
public string Meaning { get; set; }
}
The ftp
command isn't designed for scripts, so controlling it is awkward, and getting its exit status is even more awkward.
Curl is made to be scriptable, and also has the merit that you can easily switch to other protocols later by just modifying the URL. If you put your FTP credentials in your .netrc, you can simply do:
# Download file
curl --netrc --remote-name ftp://ftp.example.com/file.bin
# Upload file
curl --netrc --upload-file file.bin ftp://ftp.example.com/
If you must, you can specify username and password directly on the command line using --user username:password
instead of --netrc
.
Try to make your javascript unobtrusive :
A binary search works by dividing the problem in half repeatedly, something like this (details omitted):
Example looking for 3 in [4,1,3,8,5]
It is a bi-nary search when you divide the problem in 2.
The search only requires log2(n) steps to find the correct value.
I would recommend Introduction to Algorithms if you want to learn about algorithmic complexity.
consider the following:
def gukan(count):
while count < 100:
print(count)
count=count+3;
gukan(0) #prints ..., 93, 96, 99
def gukan(count):
while count < 100:
print(count)
count=count+9;
gukan(0) # prints ..., 81, 90, 99
you should use count < 100
because count
will never reach the exact number 100 if you use 3 or 9 as the increment, thus creating an infinite loop.
Good luck!~ :)
When you do throw ex
, that thrown exception becomes the "original" one. So all previous stack trace will not be there.
If you do throw
, the exception just goes down the line and you'll get the full stack trace.
Keep the json file in Assets (parallel to app dir) directory
Note that if you would have generated with ng new YourAppname- this assets directory exists same line with 'app' directory, and services should be child directory of app directory. May look like as below:
::app/services/myservice.ts
getOrderSummary(): Observable {
// get users from api
return this.http.get('assets/ordersummary.json')//, options)
.map((response: Response) => {
console.log("mock data" + response.json());
return response.json();
}
)
.catch(this.handleError);
}
Bootstrap col slightly use some spaces both left and right. I have just added a block element like div and set border for the differences. also adding some extra padding or margin in that extra div will work perfectly..
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet"/>
<br><br>
<div class="container">
<div class="row">
<div class="col-6 ">
<div class="border border-danger ">
<h2 class="text-center">1</h2>
</div>
</div>
<div class="col-6">
<div class="border border-warning">
<h2 class="text-center">2</h2>
</div>
</div>
</div>
</div>
_x000D_
If you need web functionality in your application (like org.springframework.web.client.RestTemplate
for REST calls) but you don't want to start a TOMCAT server, just exclude it in the POM:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
This is usually caused by incorrectly setting up permissions related to running Wireshark correctly. While you can avoid this issue by running Wireshark with elevated privileges (e.g. with sudo
), it should generally be avoided (see here, specifically here). This sometimes results from an incomplete or partially successful installation of Wireshark. Since you are running Ubuntu, this can be resolved by following the instructions given in this answer on the Wireshark Q&A site. In summary, after installing Wireshark, execute the following commands:
sudo dpkg-reconfigure wireshark-common
sudo usermod -a -G wireshark $USER
Then log out and log back in (or reboot), and Wireshark should work correctly without needing additional privileges. Finally, if the problem is still not resolved, it may be that dumpcap
was not correctly configured, or there is something else preventing it from operating correctly. In this case, you can set the setuid
bit for dumpcap
so that it always runs as root.
sudo chmod 4711 `which dumpcap`
One some distros you might get the following error when you execute the command above:
chmod: missing operand after ‘4711’
Try 'chmod --help' for more information.
In this case try running
sudo chmod 4711 `sudo which dumpcap`
Try the following code:
public static boolean isNetworkAvailable(Context context) {
boolean outcome = false;
if (context != null) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] networkInfos = cm.getAllNetworkInfo();
for (NetworkInfo tempNetworkInfo : networkInfos) {
/**
* Can also check if the user is in roaming
*/
if (tempNetworkInfo.isConnected()) {
outcome = true;
break;
}
}
}
return outcome;
}
event.target
returns the node that was targeted by the function. This means you can do anything you would do with any other node like one you'd get from document.getElementById
Fix ImageView's size with dp
or fill_parent
and set android:scaleType
to fitXY
.
Try this:
ioreg -p IOUSB -l -b | grep -E "@|PortNum|USB Serial Number"
Alternative solution: you can dump your db and restore that in different name. As I've experienced it's much quicker than db.copyDatabase()
.
$ mongodump -d old_db_name -o mongodump/
$ mongorestore -d new_db_name mongodump/old_db_name
http://docs.mongodb.org/manual/tutorial/backup-with-mongodump/
This is the current official recommended approach for database renames, given that copyDatabase
was removed in MongoDB 4.2:
The "copydb" command is deprecated, please use these two commands instead:
- mongodump (to back up data)
- mongorestore (to recover data from mongodump into a new namespace)
When I tried to select the development provisioning profile in Code Signing Identity is would say "profile doesn't match any valid certificate". So when I followed the two step process below it worked:
1) Under "Code Signing Identity" for Development change to "Don't Code Sign".
2) Then Under "Code Signing Identity" for Development you will be able to select your provisioning profile for Development.
Drove me nuts, but stumbled upon the solution.
Click "query tool" button in the list of "tool".
And then click the "open file" image button in the tool bar.
I used file upload example from,
http://www.mkyong.com/webservices/jax-rs/file-upload-example-in-jersey/
in my resource class i have below method
@POST
@Path("/upload")
@Consumes(MediaType.MULTIPART_FORM_DATA)
public Response attachupload(@FormDataParam("file") byte[] is,
@FormDataParam("file") FormDataContentDisposition fileDetail,
@FormDataParam("fileName") String flename){
attachService.saveAttachment(flename,is);
}
in my attachService.java i have below method
public void saveAttachment(String flename, byte[] is) {
// TODO Auto-generated method stub
attachmentDao.saveAttachment(flename,is);
}
in Dao i have
attach.setData(is);
attach.setFileName(flename);
in my HBM mapping is like
<property name="data" type="binary" >
<column name="data" />
</property>
This working for all type of files like .PDF,.TXT, .PNG etc.,
Fnd the answer.
I have use some styles inorder to achive this.
<span
class="pseudolink"
onclick="location='https://jsfiddle.net/'">
Go TO URL
</span>
.pseudolink {
color:blue;
text-decoration:underline;
cursor:pointer;
}
This work around with IsNumeric function will work:
select * from A where ISNUMERIC(x) =1 and X not like '%.%'
or Use
select * from A where x **not like** '%[^0-9]%'
Try this:
<asp:Button runat="server" ID="btnDelete" Text="Delete"
onClientClick="javascript:return confirm('Are you sure you want to delete this user?');" OnClick="BtnDelete_Click" />
Use XmlDocument.Load()
method to load XML from your file. Then use XmlDocument.InnerXml
property to get XML string.
XmlDocument doc = new XmlDocument();
doc.Load("path to your file");
string xmlcontents = doc.InnerXml;
Tele2 provides ftp://speedtest.tele2.net , you can log in as anonymous and upload anything to test your upload speed. For download testing they provide fixed size files, you can choose which fits best to your test.
You can connect with username of anonymous and any password (e.g. anonymous ). You can upload files to upload folder. You can't create new folder here. Your file is deleted immediately after successful upload.
Found here: http://speedtest.tele2.net/
Can't comment yet so I'll add my own answer, which is an extension to glenn jackman's answer using bash pattern matching.
My original need was to identify numbers and distinguish integers and floats. The function definitions deducted to:
function isInteger() {
[[ ${1} == ?(-)+([0-9]) ]]
}
function isFloat() {
[[ ${1} == ?(-)@(+([0-9]).*([0-9])|*([0-9]).+([0-9]))?(E?(-|+)+([0-9])) ]]
}
I used unit testing (with shUnit2) to validate my patterns worked as intended:
oneTimeSetUp() {
int_values="0 123 -0 -123"
float_values="0.0 0. .0 -0.0 -0. -.0 \
123.456 123. .456 -123.456 -123. -.456
123.456E08 123.E08 .456E08 -123.456E08 -123.E08 -.456E08 \
123.456E+08 123.E+08 .456E+08 -123.456E+08 -123.E+08 -.456E+08 \
123.456E-08 123.E-08 .456E-08 -123.456E-08 -123.E-08 -.456E-08"
}
testIsIntegerIsFloat() {
local value
for value in ${int_values}
do
assertTrue "${value} should be tested as integer" "isInteger ${value}"
assertFalse "${value} should not be tested as float" "isFloat ${value}"
done
for value in ${float_values}
do
assertTrue "${value} should be tested as float" "isFloat ${value}"
assertFalse "${value} should not be tested as integer" "isInteger ${value}"
done
}
Notes: The isFloat pattern can be modified to be more tolerant about decimal point (@(.,)
) and the E symbol (@(Ee)
). My unit tests test only values that are either integer or float, but not any invalid input.
To escape backslashes that cause problems for JSON data I use this function.
//escape backslash to avoid errors
var escapeJSON = function(str) {
return str.replace(/\\/g,'\\');
};
For unix systems only:
>>> import datetime
>>> d = datetime.date(2011,01,01)
>>> d.strftime("%s") # <-- THIS IS THE CODE YOU WANT
'1293832800'
Note 1: dizzyf observed that this applies localized timezones. Don't use in production.
Note 2: Jakub Narebski noted that this ignores timezone information even for offset-aware datetime (tested for Python 2.7).
You can use the easier function preg_match instead, It's better and faster than all of the other ones.
$var = "<tag>Get this var</tag>";
preg_match("/<tag>(.*)<\/tag>/", $var , $new_var);
echo $new_var['1'];
Output: Get this var
This is from my attempt on a coding challenge that can't use regex,
outputList = "".join((c if c.isalnum() or c=="'" else ' ') for c in inputStr ).split(' ')
The role of apostrophe seems interesting.
The two queries express the same question. Apparently the query optimizer chooses two different execution plans. My guess would be that the distinct
approach is executed like:
business_key
values to a temporary tableThe group by
could be executed like:
business key
in a hashtableThe first method optimizes for memory usage: it would still perform reasonably well when part of the temporary table has to be swapped out. The second method optimizes for speed, but potentially requires a large amount of memory if there are a lot of different keys.
Since you either have enough memory or few different keys, the second method outperforms the first. It's not unusual to see performance differences of 10x or even 100x between two execution plans.
This is the only answer that worked for me...
I had a similar issue... It seemed like no matter what I did, nothing was getting redirected and my global file was just being ignored. I seriously considered just ending it all before I found this answer. I hope this link helps somebody else.
Adding the following to the web.config file worked for me:
<system.webServer>
<modules>
<remove name="UrlRoutingModule-4.0" />
<add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" preCondition="" />
</modules>
</system.webServer>
system.webServer tag was already there of course but I added the modules tag to it and then the remove & add tags to modules tag.
try {
photo.setImageURI(Uri.parse("Location");
BitmapDrawable drawable = (BitmapDrawable) photo.getDrawable();
Bitmap bitmap = drawable.getBitmap();
bitmap = Bitmap.createScaledBitmap(bitmap, 70, 70, true);
photo.setImageBitmap(bitmap);
} catch (Exception e) {
}
<select name="test">_x000D_
<option hidden="true">Please select a name</option>_x000D_
<option value="Cash">Cash</option>_x000D_
<option value="Draft">Demand Draft No.</option>_x000D_
<option value="Cheque">Cheque No.</option>_x000D_
</select>
_x000D_
Difference between count(*) and count(1) in oracle?
count(*) means it will count all records i.e each and every cell BUT
count(1) means it will add one pseudo column with value 1 and returns count of all records
The official pattern to implement IDisposable
is hard to understand. I believe this one is better:
public class BetterDisposableClass : IDisposable {
public void Dispose() {
CleanUpManagedResources();
CleanUpNativeResources();
GC.SuppressFinalize(this);
}
protected virtual void CleanUpManagedResources() {
// ...
}
protected virtual void CleanUpNativeResources() {
// ...
}
~BetterDisposableClass() {
CleanUpNativeResources();
}
}
An even better solution is to have a rule that you always have to create a wrapper class for any unmanaged resource that you need to handle:
public class NativeDisposable : IDisposable {
public void Dispose() {
CleanUpNativeResource();
GC.SuppressFinalize(this);
}
protected virtual void CleanUpNativeResource() {
// ...
}
~NativeDisposable() {
CleanUpNativeResource();
}
}
With SafeHandle
and its derivatives, these classes should be very rare.
The result for disposable classes that don't deal directly with unmanaged resources, even in the presence of inheritance, is powerful: they don't need to be concerned with unmanaged resources anymore. They'll be simple to implement and to understand:
public class ManagedDisposable : IDisposable {
public virtual void Dispose() {
// dispose of managed resources
}
}
Promo graphic
The promo graphic is used for promotions on older versions of the Android OS (earlier than 4.0). This image is not required to submit an update for your Store Listing.
Requirements
- JPG or 24-bit PNG (no alpha)
- Dimensions: 180px by 120px
https://support.google.com/googleplay/android-developer/answer/1078870
I had massive problems with getting any of those scripts to work with sending mail in powershell. Turned out you need to create an app-password for your gmail-account to authenticate in the script. Now it works flawlessly!
Try this online tool: https://www.wsdl-analyzer.com. It appears to be free and does a lot more than just generate XML for requests and response.
There is also this: https://www.oxygenxml.com/xml_editor/wsdl_soap_analyzer.html, which can be downloaded, but not free.
You can use Popen in subprocess
as they suggest.
with os
, which is not recomment, it's like below:
import os
a = os.popen('pwd').readlines()
#include"stdio.h"
#include"conio.h"
#include"time.h"
void main()
{
time_t t;
int i;
srand(time(&t));
for(i=1;i<=10;i++)
printf("%c\t",rand()%10);
getch();
}
I needed to get the element as a string.
jQuery("#bob").get(0).outerHTML;
Which will give you something like:
<input type="text" id="bob" value="hello world" />
...as a string rather than a DOM element.
The use of /proc/self/exe
is non-portable and unreliable. On my Ubuntu 12.04 system, you must be root to read/follow the symlink. This will make the Boost example and probably the whereami()
solutions posted fail.
This post is very long but discusses the actual issues and presents code which actually works along with validation against a test suite.
The best way to find your program is to retrace the same steps the system uses. This is done by using argv[0]
resolved against file system root, pwd, path environment and considering symlinks, and pathname canonicalization. This is from memory but I have done this in the past successfully and tested it in a variety of different situations. It is not guaranteed to work, but if it doesn't you probably have much bigger problems and it is more reliable overall than any of the other methods discussed. There are situations on a Unix compatible system in which proper handling of argv[0]
will not get you to your program but then you are executing in a certifiably broken environment. It is also fairly portable to all Unix derived systems since around 1970 and even some non-Unix derived systems as it basically relies on libc() standard functionality and standard command line functionality. It should work on Linux (all versions), Android, Chrome OS, Minix, original Bell Labs Unix, FreeBSD, NetBSD, OpenBSD, BSD x.x, SunOS, Solaris, SYSV, HP-UX, Concentrix, SCO, Darwin, AIX, OS X, NeXTSTEP, etc. And with a little modification probably VMS, VM/CMS, DOS/Windows, ReactOS, OS/2, etc. If a program was launched directly from a GUI environment, it should have set argv[0]
to an absolute path.
Understand that almost every shell on every Unix compatible operating system that has ever been released basically finds programs the same way and sets up the operating environment almost the same way (with some optional extras). And any other program that launches a program is expected to create the same environment (argv, environment strings, etc.) for that program as if it were run from a shell, with some optional extras. A program or user can setup an environment that deviates from this convention for other subordinate programs that it launches but if it does, this is a bug and the program has no reasonable expectation that the subordinate program or its subordinates will function correctly.
Possible values of argv[0]
include:
/path/to/executable
— absolute path../bin/executable
— relative to pwdbin/executable
— relative to pwd./foo
— relative to pwdexecutable
— basename, find in pathbin//executable
— relative to pwd, non-canonicalsrc/../bin/executable
— relative to pwd, non-canonical, backtrackingbin/./echoargc
— relative to pwd, non-canonicalValues you should not see:
~/bin/executable
— rewritten before your program runs.~user/bin/executable
— rewritten before your program runsalias
— rewritten before your program runs$shellvariable
— rewritten before your program runs*foo*
— wildcard, rewritten before your program runs, not very useful?foo?
— wildcard, rewritten before your program runs, not very usefulIn addition, these may contain non-canonical path names and multiple layers of symbolic links. In some cases, there may be multiple hard links to the same program. For example, /bin/ls
, /bin/ps
, /bin/chmod
, /bin/rm
, etc. may be hard links to /bin/busybox
.
To find yourself, follow the steps below:
Save pwd, PATH, and argv[0] on entry to your program (or initialization of your library) as they may change later.
Optional: particularly for non-Unix systems, separate out but don't discard the pathname host/user/drive prefix part, if present; the part which often precedes a colon or follows an initial "//".
If argv[0]
is an absolute path, use that as a starting point. An absolute path probably starts with "/" but on some non-Unix systems it might start with "" or a drive letter or name prefix followed by a colon.
Else if argv[0]
is a relative path (contains "/" or "" but doesn't start with it, such as "../../bin/foo", then combine pwd+"/"+argv[0] (use present working directory from when program started, not current).
Else if argv[0] is a plain basename (no slashes), then combine it with each entry in PATH environment variable in turn and try those and use the first one which succeeds.
Optional: Else try the very platform specific /proc/self/exe
, /proc/curproc/file
(BSD), and (char *)getauxval(AT_EXECFN)
, and dlgetname(...)
if present. You might even try these before argv[0]
-based methods, if they are available and you don't encounter permission issues. In the somewhat unlikely event (when you consider all versions of all systems) that they are present and don't fail, they might be more authoritative.
Optional: check for a path name passed in using a command line parameter.
Optional: check for a pathname in the environment explicitly passed in by your wrapper script, if any.
Optional: As a last resort try environment variable "_". It might point to a different program entirely, such as the users shell.
Resolve symlinks, there may be multiple layers. There is the possibility of infinite loops, though if they exist your program probably won't get invoked.
Canonicalize filename by resolving substrings like "/foo/../bar/" to "/bar/". Note this may potentially change the meaning if you cross a network mount point, so canonization is not always a good thing. On a network server, ".." in symlink may be used to traverse a path to another file in the server context instead of on the client. In this case, you probably want the client context so canonicalization is ok. Also convert patterns like "/./" to "/" and "//" to "/".
In shell, readlink --canonicalize
will resolve multiple symlinks and canonicalize name. Chase may do similar but isn't installed. realpath()
or canonicalize_file_name()
, if present, may help.
If realpath()
doesn't exist at compile time, you might borrow a copy from a permissively licensed library distribution, and compile it in yourself rather than reinventing the wheel. Fix the potential buffer overflow (pass in sizeof output buffer, think strncpy() vs strcpy()) if you will be using a buffer less than PATH_MAX. It may be easier just to use a renamed private copy rather than testing if it exists. Permissive license copy from android/darwin/bsd:
https://android.googlesource.com/platform/bionic/+/f077784/libc/upstream-freebsd/lib/libc/stdlib/realpath.c
Be aware that multiple attempts may be successful or partially successful and they might not all point to the same executable, so consider verifying your executable; however, you may not have read permission — if you can't read it, don't treat that as a failure. Or verify something in proximity to your executable such as the "../lib/" directory you are trying to find. You may have multiple versions, packaged and locally compiled versions, local and network versions, and local and USB-drive portable versions, etc. and there is a small possibility that you might get two incompatible results from different methods of locating. And "_" may simply point to the wrong program.
A program using execve
can deliberately set argv[0]
to be incompatible with the actual path used to load the program and corrupt PATH, "_", pwd, etc. though there isn't generally much reason to do so; but this could have security implications if you have vulnerable code that ignores the fact that your execution environment can be changed in variety of ways including, but not limited, to this one (chroot, fuse filesystem, hard links, etc.) It is possible for shell commands to set PATH but fail to export it.
You don't necessarily need to code for non-Unix systems but it would be a good idea to be aware of some of the peculiarities so you can write the code in such a way that it isn't as hard for someone to port later. Be aware that some systems (DEC VMS, DOS, URLs, etc.) might have drive names or other prefixes which end with a colon such as "C:", "sys$drive:[foo]bar", and "file:///foo/bar/baz". Old DEC VMS systems use "[" and "]" to enclose the directory portion of the path though this may have changed if your program is compiled in a POSIX environment. Some systems, such as VMS, may have a file version (separated by a semicolon at the end). Some systems use two consecutive slashes as in "//drive/path/to/file" or "user@host:/path/to/file" (scp command) or "file://hostname/path/to/file" (URL). In some cases (DOS and Windows), PATH might have different separator characters — ";" vs ":" and "" vs "/" for a path separator. In csh/tsh there is "path" (delimited with spaces) and "PATH" delimited with colons but your program should receive PATH so you don't need to worry about path. DOS and some other systems can have relative paths that start with a drive prefix. C:foo.exe refers to foo.exe in the current directory on drive C, so you do need to lookup current directory on C: and use that for pwd.
An example of symlinks and wrappers on my system:
/usr/bin/google-chrome is symlink to
/etc/alternatives/google-chrome which is symlink to
/usr/bin/google-chrome-stable which is symlink to
/opt/google/chrome/google-chrome which is a bash script which runs
/opt/google/chome/chrome
Note that user bill posted a link above to a program at HP that handles the three basic cases of argv[0]
. It needs some changes, though:
strcat()
and strcpy()
to use strncat()
and strncpy()
. Even though the variables are declared of length PATHMAX, an input value of length PATHMAX-1 plus the length of concatenated strings is > PATHMAX and an input value of length PATHMAX would be unterminated.So, if you combine both the HP code and the realpath code and fix both to be resistant to buffer overflows, then you should have something which can properly interpret argv[0]
.
The following illustrates actual values of argv[0]
for various ways of invoking the same program on Ubuntu 12.04. And yes, the program was accidentally named echoargc instead of echoargv. This was done using a script for clean copying but doing it manually in shell gets same results (except aliases don't work in script unless you explicitly enable them).
cat ~/src/echoargc.c
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
main(int argc, char **argv)
{
printf(" argv[0]=\"%s\"\n", argv[0]);
sleep(1); /* in case run from desktop */
}
tcc -o ~/bin/echoargc ~/src/echoargc.c
cd ~
/home/whitis/bin/echoargc
argv[0]="/home/whitis/bin/echoargc"
echoargc
argv[0]="echoargc"
bin/echoargc
argv[0]="bin/echoargc"
bin//echoargc
argv[0]="bin//echoargc"
bin/./echoargc
argv[0]="bin/./echoargc"
src/../bin/echoargc
argv[0]="src/../bin/echoargc"
cd ~/bin
*echo*
argv[0]="echoargc"
e?hoargc
argv[0]="echoargc"
./echoargc
argv[0]="./echoargc"
cd ~/src
../bin/echoargc
argv[0]="../bin/echoargc"
cd ~/junk
~/bin/echoargc
argv[0]="/home/whitis/bin/echoargc"
~whitis/bin/echoargc
argv[0]="/home/whitis/bin/echoargc"
alias echoit=~/bin/echoargc
echoit
argv[0]="/home/whitis/bin/echoargc"
echoarg=~/bin/echoargc
$echoarg
argv[0]="/home/whitis/bin/echoargc"
ln -s ~/bin/echoargc junk1
./junk1
argv[0]="./junk1"
ln -s /home/whitis/bin/echoargc junk2
./junk2
argv[0]="./junk2"
ln -s junk1 junk3
./junk3
argv[0]="./junk3"
gnome-desktop-item-edit --create-new ~/Desktop
# interactive, create desktop link, then click on it
argv[0]="/home/whitis/bin/echoargc"
# interactive, right click on gnome application menu, pick edit menus
# add menu item for echoargc, then run it from gnome menu
argv[0]="/home/whitis/bin/echoargc"
cat ./testargcscript 2>&1 | sed -e 's/^/ /g'
#!/bin/bash
# echoargc is in ~/bin/echoargc
# bin is in path
shopt -s expand_aliases
set -v
cat ~/src/echoargc.c
tcc -o ~/bin/echoargc ~/src/echoargc.c
cd ~
/home/whitis/bin/echoargc
echoargc
bin/echoargc
bin//echoargc
bin/./echoargc
src/../bin/echoargc
cd ~/bin
*echo*
e?hoargc
./echoargc
cd ~/src
../bin/echoargc
cd ~/junk
~/bin/echoargc
~whitis/bin/echoargc
alias echoit=~/bin/echoargc
echoit
echoarg=~/bin/echoargc
$echoarg
ln -s ~/bin/echoargc junk1
./junk1
ln -s /home/whitis/bin/echoargc junk2
./junk2
ln -s junk1 junk3
./junk3
These examples illustrate that the techniques described in this post should work in a wide range of circumstances and why some of the steps are necessary.
EDIT: Now, the program that prints argv[0] has been updated to actually find itself.
// Copyright 2015 by Mark Whitis. License=MIT style
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
// "look deep into yourself, Clarice" -- Hanibal Lector
char findyourself_save_pwd[PATH_MAX];
char findyourself_save_argv0[PATH_MAX];
char findyourself_save_path[PATH_MAX];
char findyourself_path_separator='/';
char findyourself_path_separator_as_string[2]="/";
char findyourself_path_list_separator[8]=":"; // could be ":; "
char findyourself_debug=0;
int findyourself_initialized=0;
void findyourself_init(char *argv0)
{
getcwd(findyourself_save_pwd, sizeof(findyourself_save_pwd));
strncpy(findyourself_save_argv0, argv0, sizeof(findyourself_save_argv0));
findyourself_save_argv0[sizeof(findyourself_save_argv0)-1]=0;
strncpy(findyourself_save_path, getenv("PATH"), sizeof(findyourself_save_path));
findyourself_save_path[sizeof(findyourself_save_path)-1]=0;
findyourself_initialized=1;
}
int find_yourself(char *result, size_t size_of_result)
{
char newpath[PATH_MAX+256];
char newpath2[PATH_MAX+256];
assert(findyourself_initialized);
result[0]=0;
if(findyourself_save_argv0[0]==findyourself_path_separator) {
if(findyourself_debug) printf(" absolute path\n");
realpath(findyourself_save_argv0, newpath);
if(findyourself_debug) printf(" newpath=\"%s\"\n", newpath);
if(!access(newpath, F_OK)) {
strncpy(result, newpath, size_of_result);
result[size_of_result-1]=0;
return(0);
} else {
perror("access failed 1");
}
} else if( strchr(findyourself_save_argv0, findyourself_path_separator )) {
if(findyourself_debug) printf(" relative path to pwd\n");
strncpy(newpath2, findyourself_save_pwd, sizeof(newpath2));
newpath2[sizeof(newpath2)-1]=0;
strncat(newpath2, findyourself_path_separator_as_string, sizeof(newpath2));
newpath2[sizeof(newpath2)-1]=0;
strncat(newpath2, findyourself_save_argv0, sizeof(newpath2));
newpath2[sizeof(newpath2)-1]=0;
realpath(newpath2, newpath);
if(findyourself_debug) printf(" newpath=\"%s\"\n", newpath);
if(!access(newpath, F_OK)) {
strncpy(result, newpath, size_of_result);
result[size_of_result-1]=0;
return(0);
} else {
perror("access failed 2");
}
} else {
if(findyourself_debug) printf(" searching $PATH\n");
char *saveptr;
char *pathitem;
for(pathitem=strtok_r(findyourself_save_path, findyourself_path_list_separator, &saveptr); pathitem; pathitem=strtok_r(NULL, findyourself_path_list_separator, &saveptr) ) {
if(findyourself_debug>=2) printf("pathitem=\"%s\"\n", pathitem);
strncpy(newpath2, pathitem, sizeof(newpath2));
newpath2[sizeof(newpath2)-1]=0;
strncat(newpath2, findyourself_path_separator_as_string, sizeof(newpath2));
newpath2[sizeof(newpath2)-1]=0;
strncat(newpath2, findyourself_save_argv0, sizeof(newpath2));
newpath2[sizeof(newpath2)-1]=0;
realpath(newpath2, newpath);
if(findyourself_debug) printf(" newpath=\"%s\"\n", newpath);
if(!access(newpath, F_OK)) {
strncpy(result, newpath, size_of_result);
result[size_of_result-1]=0;
return(0);
}
} // end for
perror("access failed 3");
} // end else
// if we get here, we have tried all three methods on argv[0] and still haven't succeeded. Include fallback methods here.
return(1);
}
main(int argc, char **argv)
{
findyourself_init(argv[0]);
char newpath[PATH_MAX];
printf(" argv[0]=\"%s\"\n", argv[0]);
realpath(argv[0], newpath);
if(strcmp(argv[0],newpath)) { printf(" realpath=\"%s\"\n", newpath); }
find_yourself(newpath, sizeof(newpath));
if(1 || strcmp(argv[0],newpath)) { printf(" findyourself=\"%s\"\n", newpath); }
sleep(1); /* in case run from desktop */
}
And here is the output which demonstrates that in every one of the previous tests it actually did find itself.
tcc -o ~/bin/echoargc ~/src/echoargc.c
cd ~
/home/whitis/bin/echoargc
argv[0]="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
echoargc
argv[0]="echoargc"
realpath="/home/whitis/echoargc"
findyourself="/home/whitis/bin/echoargc"
bin/echoargc
argv[0]="bin/echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
bin//echoargc
argv[0]="bin//echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
bin/./echoargc
argv[0]="bin/./echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
src/../bin/echoargc
argv[0]="src/../bin/echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
cd ~/bin
*echo*
argv[0]="echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
e?hoargc
argv[0]="echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
./echoargc
argv[0]="./echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
cd ~/src
../bin/echoargc
argv[0]="../bin/echoargc"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
cd ~/junk
~/bin/echoargc
argv[0]="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
~whitis/bin/echoargc
argv[0]="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
alias echoit=~/bin/echoargc
echoit
argv[0]="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
echoarg=~/bin/echoargc
$echoarg
argv[0]="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
rm junk1 junk2 junk3
ln -s ~/bin/echoargc junk1
./junk1
argv[0]="./junk1"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
ln -s /home/whitis/bin/echoargc junk2
./junk2
argv[0]="./junk2"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
ln -s junk1 junk3
./junk3
argv[0]="./junk3"
realpath="/home/whitis/bin/echoargc"
findyourself="/home/whitis/bin/echoargc"
The two GUI launches described above also correctly find the program.
There is one potential pitfall. The access()
function drops permissions if the program is setuid before testing. If there is a situation where the program can be found as an elevated user but not as a regular user, then there might be a situation where these tests would fail, although it is unlikely the program could actually be executed under those circumstances. One could use euidaccess() instead. It is possible, however, that it might find an inaccessable program earlier on path than the actual user could.
When I tried to create something simillar to inbox floating action button i thought about creating own custom component.
It would be simple frame layout with fixed height (to contain expanded menu) containing FAB button and 3 more placed under the FAB. when you click on FAB you just simply animate other buttons to translate up from under the FAB.
There are some libraries which do that (for example https://github.com/futuresimple/android-floating-action-button), but it's always more fun if you create it by yourself :)
To set a origins remote url-
git remote set-url origin git://new.url.here
here origin is your push url name. You may have multiple origin. If you have multiple origin replace origin as that name.
For deleting Origin
git remote rm origin/originName
or
git remote remove origin/originName
For adding new origin
git remote add origin/originName git://new.url.here / RemoteUrl
On windows 7, find
C:\Users\Simion\AppData\Roaming\Sublime Text 2\Packages\Color Scheme - Default
Find your color scheme file, open it, and find lineHighlight
.
Ex:
<key>lineHighlight</key>
<string>#ccc</string>
replace #ccc
with your preferred background color.
Just treat the ES6 class name the same as you would have treated the constructor name in the ES5 way. They are one and the same.
The ES6 syntax is just syntactic sugar and creates exactly the same underlying prototype, constructor function and objects.
So, in your ES6 example with:
// animal.js
class Animal {
...
}
var a = new Animal();
module.exports = {Animal: Animal};
You can just treat Animal
like the constructor of your object (the same as you would have done in ES5). You can export the constructor. You can call the constructor with new Animal()
. Everything is the same for using it. Only the declaration syntax is different. There's even still an Animal.prototype
that has all your methods on it. The ES6 way really does create the same coding result, just with fancier/nicer syntax.
On the import side, this would then be used like this:
const Animal = require('./animal.js').Animal;
let a = new Animal();
This scheme exports the Animal constructor as the .Animal
property which allows you to export more than one thing from that module.
If you don't need to export more than one thing, you can do this:
// animal.js
class Animal {
...
}
module.exports = Animal;
And, then import it with:
const Animal = require('./animal.js');
let a = new Animal();
So that works fine, but how on earth do you give the buttons margins so there is space between them?
You call setMargins()
on the LinearLayout.LayoutParams
object.
I tried using LinearLayout.MarginLayoutParams, but that has no weight member so it's no good.
LinearLayout.LayoutParams
is a subclass of LinearLayout.MarginLayoutParams
, as indicated in the documentation.
Is this impossible?
No.
it wouldn't be the first Android layout task you can only do in XML
You are welcome to supply proof of this claim.
Personally, I am unaware of anything that can only be accomplished via XML and not through Java methods in the SDK. In fact, by definition, everything has to be doable via Java (though not necessarily via SDK-reachable methods), since XML is not executable code. But, if you're aware of something, point it out, because that's a bug in the SDK that should get fixed someday.
If you are using linux, and the data file is from windows. It probably because the character ^M Find it and delete. done!
var sessionVal = '@Session["EnergyUnit"]';
alert(sessionVal);
apiclient
is not in the list of third party library supplied by the appengine runtime: http://developers.google.com/appengine/docs/python/tools/libraries27 .
You need to copy apiclient
into your project directory & you need to copy these uritemplate
& httplib2
too.
Note: Any third party library that are not supplied in the documentation list must copy to your appengine project directory
#include <stdio.h>
#include <stdlib.h>
// ....
system("my_bash_script.sh");
The innerHTML of your iframe is blank because your iframe tag doesn't surround any content in the parent document. In order to get the content from the page referred to by the iframe's src attribute, you need to access the iframe's contentDocument property. An exception will be thrown if the src is from a different domain though. This is a security feature that prevents you from executing arbitrary JavaScript on someone else's page, which would create a cross-site scripting vulnerability. Here is some example code the illustrates what I'm talking about:
<script src="http://prototypejs.org/assets/2009/8/31/prototype.js" type="text/javascript"></script>
<h1>Parent</h1>
<script type="text/javascript">
function on_load(iframe) {
try {
// Displays the first 50 chars in the innerHTML of the
// body of the page that the iframe is showing.
// EDIT 2012-04-17: for wider support, fallback to contentWindow.document
var doc = iframe.contentDocument || iframe.contentWindow.document;
alert(doc.body.innerHTML.substring(0, 50));
} catch (e) {
// This can happen if the src of the iframe is
// on another domain
alert('exception: ' + e);
}
}
</script>
<iframe id="child" src="iframe_content.html" onload="on_load(this)"></iframe>
To further the example, try using this as the content of the iframe:
<h1>Child</h1>
<a href="http://www.google.com/">Google</a>
<p>Use the preceeding link to change the src of the iframe
to see what happens when the src domain is different from
that of the parent page</p>
This is now trivial in tidyr with replace_na(). The function appears to work for data.tables as well as data.frames:
tidyr::replace_na(x, list(a=0, b=0))
The install.packages command looks through the .libPaths variable. Here's what mine defaults to on OSX:
> .libPaths()
[1] "/Library/Frameworks/R.framework/Resources/library"
I don't install packages there by default, I prefer to have them installed in my home directory. In my .Rprofile, I have this line:
.libPaths( "/Users/tex/lib/R" )
This adds the directory "/Users/tex/lib/R" to the front of the .libPaths variable.
Windows only: You can either use Ironpython or a library that allows cPython to access the .NET frameworks on Windows. Then use the sendkeys class of .NET or the more general send to simulate a keystroke.
OS X only: Use PyObjC then use use CGEventCreateKeyboardEvent
call.
Full disclosure: I have only done this on OS X with Python, but I have used .NET sendkeys (with C#) and that works great.
During these peak CPU times, what is the user load like? You say this is a web based application, so the culprits that come to mind is memory utilization issues. If you store a lot of stuff in the session, for instance, and the session count gets high enough, the app server will start thrashing about. This is also a case where the GC might make matters worse depending on the scheme you are using. More information about the app and the server configuration would be helpful in pointing towards more debugging ideas.
Delete the CMakeCache.txt file and try this:
cmake -G %1 -DBUILD_SHARED_LIBS=ON -DBUILD_STATIC_LIBS=ON -DBUILD_TESTS=ON ..
You have to enter all your command-line definitions before including the path.
I didn't know, but found the question interesting. So I dug in the android code... Thanks open-source :)
The screen you show is DateTimeSettings
. The checkbox "Use network-provided values" is associated to the shared preference String KEY_AUTO_TIME = "auto_time";
and also to Settings.System.AUTO_TIME
This settings is observed by an observed called mAutoTimeObserver
in the 2 network ServiceStateTracker
s:
GsmServiceStateTracker
and CdmaServiceStateTracker
.
Both implementations call a method called revertToNitz()
when the settings becomes true.
Apparently NITZ is the equivalent of NTP in the carrier world.
Bottom line: You can set the time to the value provided by the carrier thanks to revertToNitz()
.
Unfortunately, I haven't found a mechanism to get the network time.
If you really need to do this, I'm afraid, you'll have to copy these ServiceStateTracker
s implementations, catch the intent raised by the framework (I suppose), and add a getter to mSavedTime
.
You can do something like this:
import sys
from PIL import Image
images = [Image.open(x) for x in ['Test1.jpg', 'Test2.jpg', 'Test3.jpg']]
widths, heights = zip(*(i.size for i in images))
total_width = sum(widths)
max_height = max(heights)
new_im = Image.new('RGB', (total_width, max_height))
x_offset = 0
for im in images:
new_im.paste(im, (x_offset,0))
x_offset += im.size[0]
new_im.save('test.jpg')
Test1.jpg
Test2.jpg
Test3.jpg
test.jpg
The nested for for i in xrange(0,444,95):
is pasting each image 5 times, staggered 95 pixels apart. Each outer loop iteration pasting over the previous.
for elem in list_im:
for i in xrange(0,444,95):
im=Image.open(elem)
new_im.paste(im, (i,0))
new_im.save('new_' + elem + '.jpg')
||
and &&
bind with the precedence that you expect from boolean operators in programming languages (&&
is very strong, ||
is slightly less strong).
and
and or
have lower precedence.
For example, unlike ||
, or
has lower precedence than =
:
> a = false || true
=> true
> a
=> true
> a = false or true
=> true
> a
=> false
Likewise, unlike &&
, and
also has lower precedence than =
:
> a = true && false
=> false
> a
=> false
> a = true and false
=> false
> a
=> true
What's more, unlike &&
and ||
, and
and or
bind with equal precedence:
> !puts(1) || !puts(2) && !puts(3)
1
=> true
> !puts(1) or !puts(2) and !puts(3)
1
3
=> true
> !puts(1) or (!puts(2) and !puts(3))
1
=> true
The weakly-binding and
and or
may be useful for control-flow purposes: see http://devblog.avdi.org/2010/08/02/using-and-and-or-in-ruby/ .
This is a well-known problem with Java type erasure: T is just a type variable, and you must indicate actual class, usually as Class argument. Without such information, best that can be done is to use bounds; and plain T is roughly same as 'T extends Object'. And Jackson will then bind JSON Objects as Maps.
In this case, tester method needs to have access to Class, and you can construct
JavaType type = mapper.getTypeFactory().
constructCollectionType(List.class, Foo.class)
and then
List<Foo> list = mapper.readValue(new File("input.json"), type);
window.open
will open a new browser with the specified URL.
window.location.href
will open the URL in the window in which the code is called.
Note also that window.open()
is a function on the window object itself whereas window.location
is an object that exposes a variety of other methods and properties.
If it were me, I would simply create a new Controller with a Single Action and then use RenderAction in place of Partial:
// Assuming the controller is named NewController
@{Html.RenderAction("ActionName",
"New",
new { routeValueOne = "SomeValue" });
}
If you just want to get the information of current directory, you can type:
pwd
and you don't need to use the Nautilus, or you can use a teamviewer software to remote connect to the computer, you can get everything you want.
isset($_POST['fromPerson'])
I think you want to specify
-H "Content-Type:text/xml"
with a colon, not an equals.
Try putting the height into one of the cells, like this:
<table class="tableContainer" cellspacing="10px">
<tr>
<td style="height:15px;">NHS Number</td>
<td> </td>
Note however, that you won't be able to make the cell smaller than the content requires it to be. In that case you would have to make the text smaller first.
@Alexander
's solution is the one which I was looking for.
But it was causing an error - TypeError: a.stopPropagation is not a function
.
So I made the event with KeyboardEvent
.
Here's the working code and Javascript version is very convenient for React.js projects. I also used this for my React.js project.
(function selectFirst(input) {
let _addEventListener = input.addEventListener
? input.addEventListener
: input.attachEvent;
function addEventListenerWrapper(type, listener) {
if (type === 'keydown') {
console.log('keydown');
let orig_listener = listener;
listener = event => {
let suggestion_selected =
document.getElementsByClassName('pac-item-selected').length > 0;
if (event.keyCode === 13 && !suggestion_selected) {
let simulated_downarrow = new KeyboardEvent('keydown', {
bubbles: true,
cancelable: true,
keyCode: 40
});
orig_listener.apply(input, [simulated_downarrow]);
}
orig_listener.apply(input, [event]);
};
}
_addEventListener.apply(input, [type, listener]);
}
if (input.addEventListener) input.addEventListener = addEventListenerWrapper;
else if (input.attachEvent) input.attachEvent = addEventListenerWrapper;
})(addressInput);
this.autocomplete = new window.google.maps.places.Autocomplete(addressInput, options);
Hope this can help someone, :)