java -cp CLASSPATH is necesssary if you wish to specify all code in the classpath. This is useful for debugging code.
The jarred executable format: java -jar JarFile
can be used if you wish to start the app with a single short command. You can specify additional dependent jar files in your MANIFEST using space separated jars in a Class-Path entry, e.g.:
Class-Path: mysql.jar infobus.jar acme/beans.jar
Both are comparable in terms of performance.
I am providing an answer from my own blog. Hope this will help.
What will be output?
Following XML file named users.xml will be created.
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<users>
<user uid="1">
<firstname>Interview</firstname>
<lastname>Bubble</lastname>
<email>[email protected]</email>
</user>
</users>
PROCEDURE
Basic steps, in order to create an XML File with a DOM Parser, are:
Create a DocumentBuilder
instance.
Create a Document from the above DocumentBuilder
.
Create the elements you want using the Element
class and its appendChild
method.
Create a new Transformer
instance and a new DOMSource
instance.
Create a new StreamResult
to the output stream you want to use.
Use transform
method to write the DOM object to the output stream.
SOURCE CODE:
package com.example.TestApp;
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class CreateXMLFileJava {
public static void main(String[] args) throws ParserConfigurationException,
IOException,
TransformerException
{
// 1.Create a DocumentBuilder instance
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dbuilder = dbFactory.newDocumentBuilder();
// 2. Create a Document from the above DocumentBuilder.
Document document = dbuilder.newDocument();
// 3. Create the elements you want using the Element class and its appendChild method.
// root element
Element users = document.createElement("users");
document.appendChild(users);
// child element
Element user = document.createElement("user");
users.appendChild(user);
// Attribute of child element
user.setAttribute("uid", "1");
// firstname Element
Element firstName = document.createElement("firstName");
firstName.appendChild(document.createTextNode("Interview"));
user.appendChild(firstName);
// lastName element
Element lastName = document.createElement("lastName");
lastName.appendChild(document.createTextNode("Bubble"));
user.appendChild(lastName);
// email element
Element email = document.createElement("email");
email.appendChild(document.createTextNode("[email protected]"));
user.appendChild(email);
// write content into xml file
// 4. Create a new Transformer instance and a new DOMSource instance.
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(document);
// 5. Create a new StreamResult to the output stream you want to use.
StreamResult result = new StreamResult(new File("/Users/admin/Desktop/users.xml"));
// StreamResult result = new StreamResult(System.out); // to print on console
// 6. Use transform method to write the DOM object to the output stream.
transformer.transform(source, result);
System.out.println("File created successfully");
}
}
OUTPUT:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<users>
<user uid="1">
<firstName>Interview</firstName>
<lastName>Bubble</lastName>
<email>[email protected]</email>
</user>
</users>
Simply replace message parameter passed in clientSocket.sendto(message,(serverName, serverPort))
to clientSocket.sendto(message.encode(),(serverName, serverPort))
. Then you would successfully run in in python3
I suppose imports
import pandas as pd
import numpy as np
First append new row with NaN, NaN,...
at the end of DataFrame (df
).
s1 = df.iloc[0] # copy 1st row to a new Series s1
s1[:] = np.NaN # set all values to NaN
df2 = df.append(s1, ignore_index=True) # add s1 to the end of df
It will create new DF df2. Maybe there is more elegant way but this works.
Now you can shift it:
df2.x2 = df2.x2.shift(1) # shift what you want
An alternative to other layouts, might be to put your panel with the GridLayout, inside another panel that is a FlowLayout. That way your spacing will be intact but will not expand across the entire available space.
A compilation in C++ is done in 2 major phases:
The first is the compilation of "source" text files into binary "object" files: The CPP file is the compiled file and is compiled without any knowledge about the other CPP files (or even libraries), unless fed to it through raw declaration or header inclusion. The CPP file is usually compiled into a .OBJ or a .O "object" file.
The second is the linking together of all the "object" files, and thus, the creation of the final binary file (either a library or an executable).
Where does the HPP fit in all this process?
The compilation of each CPP file is independent from all other CPP files, which means that if A.CPP needs a symbol defined in B.CPP, like:
// A.CPP
void doSomething()
{
doSomethingElse(); // Defined in B.CPP
}
// B.CPP
void doSomethingElse()
{
// Etc.
}
It won't compile because A.CPP has no way to know "doSomethingElse" exists... Unless there is a declaration in A.CPP, like:
// A.CPP
void doSomethingElse() ; // From B.CPP
void doSomething()
{
doSomethingElse() ; // Defined in B.CPP
}
Then, if you have C.CPP which uses the same symbol, you then copy/paste the declaration...
Yes, there is a problem. Copy/pastes are dangerous, and difficult to maintain. Which means that it would be cool if we had some way to NOT copy/paste, and still declare the symbol... How can we do it? By the include of some text file, which is commonly suffixed by .h, .hxx, .h++ or, my preferred for C++ files, .hpp:
// B.HPP (here, we decided to declare every symbol defined in B.CPP)
void doSomethingElse() ;
// A.CPP
#include "B.HPP"
void doSomething()
{
doSomethingElse() ; // Defined in B.CPP
}
// B.CPP
#include "B.HPP"
void doSomethingElse()
{
// Etc.
}
// C.CPP
#include "B.HPP"
void doSomethingAgain()
{
doSomethingElse() ; // Defined in B.CPP
}
include
work?Including a file will, in essence, parse and then copy-paste its content in the CPP file.
For example, in the following code, with the A.HPP header:
// A.HPP
void someFunction();
void someOtherFunction();
... the source B.CPP:
// B.CPP
#include "A.HPP"
void doSomething()
{
// Etc.
}
... will become after inclusion:
// B.CPP
void someFunction();
void someOtherFunction();
void doSomething()
{
// Etc.
}
In the current case, this is not needed, and B.HPP has the doSomethingElse
function declaration, and B.CPP has the doSomethingElse
function definition (which is, by itself a declaration). But in a more general case, where B.HPP is used for declarations (and inline code), there could be no corresponding definition (for example, enums, plain structs, etc.), so the include could be needed if B.CPP uses those declaration from B.HPP. All in all, it is "good taste" for a source to include by default its header.
The header file is thus necessary, because the C++ compiler is unable to search for symbol declarations alone, and thus, you must help it by including those declarations.
One last word: You should put header guards around the content of your HPP files, to be sure multiple inclusions won't break anything, but all in all, I believe the main reason for existence of HPP files is explained above.
#ifndef B_HPP_
#define B_HPP_
// The declarations in the B.hpp file
#endif // B_HPP_
or even simpler (although not standard)
#pragma once
// The declarations in the B.hpp file
My answer wouldn't help you probably, but it help with this problem generally.
When you see this kind of exception you should try to open your xml file in any Hex Editor and sometime you can see additional bytes at the beginning of the file which text-editor doesn't show.
Delete them and your xml will be parsed.
View level
You can disable hardware acceleration for an individual view at runtime with the following code:
myView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
Don't use Rstudio to update R. Rstudio IS NOT R, Rstudio is just an IDE. This answer is a summary of previous answers for different OS. For all OS it is convenient to have a look in advance what will happen with the packages you have already installed here.
WINDOWS ->> Open CMD/Powershell as an administrator and type "R" to go into interactive mode. If this does not work, search and run RGui.exe instead of writing R in the console ...and then:
lib_path <- gsub( "/", "\\\\" , Sys.getenv("R_LIBS_USER"))
install.packages("installr", lib = lib_path)
install.packages("stringr", lib_path)
library(stringr, lib.loc = lib_path)
library(installr, lib.loc = lib_path)
installr::updateR()
MacOS ->> You can use updateR package. The package is not on CRAN, so you’ll need to run the following code in Rgui:
install.packages("devtools")
devtools::install_github("AndreaCirilloAC/updateR")
updateR(admin_password = "PASSWORD") # Where "PASSWORD" stands for your system password
Note that it is planned to merge updateR and installR in the near future to work for both Mac and Windows.
Linux ->> For the moment installr
is NOT available for Linux/MacOS (see documentation for current version 0.20). As R is installed, you can follow these instructions (in Ubuntu, although the idea is the same in other distros: add the source, update and upgrade and install.)
If you have a query with a lot of criteria, it can be tricky to remember what each one does. I add a text field into the original table - call it "comments" or "documentation". Then I include it in the query with a comment for each criteria.
Comments need to be written like like this so that all relevant rows are returned. Unfortunately, as I'm a new poster, I can't add a screenshot!
So here goes without
Field: | Comment |ContractStatus | ProblemDealtWith | ...... |
Table: | ElecContracts |ElecContracts | ElecContracts | ...... |
Sort:
Show:
Criteria | <> "all problems are | "objection" Or |
| picked up with this | "rejected" Or |
| criteria" OR Is Null | "rolled" |
| OR ""
<>
tells the query to choose rows that are not equal to the text you entered, otherwise it will only pick up fields that have text equal to your comment i.e. none!
" " enclose your comment in quotes
OR Is Null OR "" tells your query to include any rows that have no data in the comments field , otherwise it won't return anything!
I liked user4101525's answer best in theory but it doesn't actually work. Selection is not an overlay so you see whatever is under the control
Ramgy Borja's answer doesn't deal with the fact that default style is not actually a color at all so applying it doesn't help. This handles the default style and works if applying your own colors (which may be what edhubbell refers to as nasty results)
dgv.RowsDefaultCellStyle.SelectionBackColor = dgv.RowsDefaultCellStyle.BackColor.IsEmpty ? System.Drawing.Color.White : dgv.RowsDefaultCellStyle.BackColor;
dgv.RowsDefaultCellStyle.SelectionForeColor = dgv.RowsDefaultCellStyle.ForeColor.IsEmpty ? System.Drawing.Color.Black : dgv.RowsDefaultCellStyle.ForeColor;
public Form1()
{
InitializeComponent();
//this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.MaximizeBox = false;
this.MinimizeBox = false;
}
Another way to do it that's designed for django, but should work in most settings, is to use django-dotenv.
The code below defines a method range()
available to the entire scope of your application MyApp
. Its behaviour is very similar to the Python range()
method.
angular.module('MyApp').run(['$rootScope', function($rootScope) {
$rootScope.range = function(min, max, step) {
// parameters validation for method overloading
if (max == undefined) {
max = min;
min = 0;
}
step = Math.abs(step) || 1;
if (min > max) {
step = -step;
}
// building the array
var output = [];
for (var value=min; value<max; value+=step) {
output.push(value);
}
// returning the generated array
return output;
};
}]);
With one parameter:
<span ng-repeat="i in range(3)">{{ i }}, </span>
0, 1, 2,
With two parameters:
<span ng-repeat="i in range(1, 5)">{{ i }}, </span>
1, 2, 3, 4,
With three parameters:
<span ng-repeat="i in range(-2, .7, .5)">{{ i }}, </span>
-2, -1.5, -1, -0.5, 0, 0.5,
Works in SQLServer
declare @myNumber int = 123
declare @leadingChar varchar(1) = '0'
declare @numberOfLeadingChars int = 5
select right(REPLICATE ( @leadingChar , @numberOfLeadingChars ) + cast(@myNumber as varchar(max)), @numberOfLeadingChars)
Enjoy
Just for completion:
I wanted to kill all processes connected to a specific port but not the process listening
the command (in cmd shell) for the port 9001 is:
FOR /F "tokens=5 delims= " %P IN ('netstat -ano ^| findstr -rc:":9001[ ]*ESTA"') DO TaskKill /F /PID %P
findstr:
netstat:
It works because netstat prints out the source port then destination port and then ESTABLISHED
With the Material Components Library you can use the MaterialShapeDrawable
.
With a TextView
:
<TextView
android:id="@+id/textview"
../>
You can programmatically apply a MaterialShapeDrawable
:
float radius = getResources().getDimension(R.dimen.corner_radius);
TextView textView = findViewById(R.id.textview);
ShapeAppearanceModel shapeAppearanceModel = new ShapeAppearanceModel()
.toBuilder()
.setAllCorners(CornerFamily.ROUNDED,radius)
.build();
MaterialShapeDrawable shapeDrawable = new MaterialShapeDrawable(shapeAppearanceModel);
ViewCompat.setBackground(textView,shapeDrawable);
If you want to change the background color and the border just apply:
shapeDrawable.setFillColor(ContextCompat.getColorStateList(this,R.color.....));
shapeDrawable.setStroke(2.0f, ContextCompat.getColor(this,R.color....));
I guess this is essentially putting it in a string, but this avoids the rounding error:
import decimal
def display(x):
digits = 15
temp = str(decimal.Decimal(str(x) + '0' * digits))
return temp[:temp.find('.') + digits + 1]
You can also do this using a subshell to better contain your usage - here's a practical example:
#!/bin/bash
commandA --args
# Run commandB in a subshell and collect its output in $VAR
# NOTE
# - PATH is only modified as an example
# - output beyond a single value may not be captured without quoting
# - it is important to discard (or separate) virtualenv activation stdout
# if the stdout of commandB is to be captured
#
VAR=$(
PATH="/opt/bin/foo:$PATH"
. /path/to/activate > /dev/null # activate virtualenv
commandB # tool from /opt/bin/ which requires virtualenv
)
# Use the output from commandB later
commandC "$VAR"
This style is especially helpful when
commandA
or commandC
exists under /opt/bin
commandB
exists in the system PATH
or is very common $('#some_select_box').click(function() {
$(this).find('option:selected').remove();
});
Using the find method.
Add it to the session, not to the request.
HttpSession session = request.getSession();
session.setAttribute("object", object);
Also, don't use scriptlets in the JSP. Use EL instead; to access object
all you need is ${object}
.
A primary feature of JSP technology version 2.0 is its support for an expression language (EL). An expression language makes it possible to easily access application data stored in JavaBeans components. For example, the JSP expression language allows a page author to access a bean using simple syntax such as
${name}
for a simple variable or${name.foo.bar}
for a nested property.
Your ngClick
is correct; you just need the right service. $location
is what you're looking for. Check out the docs for the full details, but the solution to your specific question is this:
$location.path( '/new-page.html' );
The $location
service will add the hash (#) if it's appropriate based on your current settings and ensure no page reload occurs.
You could also do something more flexible with a directive if you so chose:
.directive( 'goClick', function ( $location ) {
return function ( scope, element, attrs ) {
var path;
attrs.$observe( 'goClick', function (val) {
path = val;
});
element.bind( 'click', function () {
scope.$apply( function () {
$location.path( path );
});
});
};
});
And then you could use it on anything:
<button go-click="/go/to/this">Click!</button>
There are many ways to improve this directive; it's merely to show what could be done. Here's a Plunker demonstrating it in action: http://plnkr.co/edit/870E3psx7NhsvJ4mNcd2?p=preview.
Another useful variant is pipe to tr
:
echo "${my_array[@]}" | tr ' ' '\n'
This looks simple and compact
put the dll in system32 or syswow32 directory, and use appropriate regsvr32 to register it. wiered that even though it gave failed to register error, I rebooted my WIN 7 64 AND my vb app loaded the dll just fine!!
QFile file("test.txt");
/*
*If file does not exist, it will be created
*/
if (!file.open(QIODevice::ReadOnly | QIODevice::Text | QIODevice::ReadWrite))
{
qDebug() << "FAILED TO CREATE FILE / FILE DOES NOT EXIST";
}
/*for Reading line by line from text file*/
while (!file.atEnd()) {
QByteArray line = file.readLine();
qDebug() << "read output - " << line;
}
/*for writing line by line to text file */
if (file.open(QIODevice::ReadWrite))
{
QTextStream stream(&file);
stream << "1_XYZ"<<endl;
stream << "2_XYZ"<<endl;
}
I think the easiest route is to include the jQuery javascript library in your webpages, then use JSON as format to pass data between the two.
In your HTML pages, you can request data from the PHP scripts like this:
$.getJSON('http://foo/bar.php', {'num1': 12, 'num2': 27}, function(e) {
alert('Result from PHP: ' + e.result);
});
In bar.php you can do this:
$num1 = $_GET['num1'];
$num2 = $_GET['num2'];
echo json_encode(array("result" => $num1 * $num2));
This is what's usually called AJAX, and it is useful to give web pages a more dynamic and desktop-like feel (you don't have to refresh the entire page to communicate with PHP).
Other techniques are simpler. As others have suggested, you can simply generate the variable data from your PHP script:
$foo = 123;
echo "<script type=\"text/javascript\">\n";
echo "var foo = ${foo};\n";
echo "alert('value is:' + foo);\n";
echo "</script>\n";
Most web pages nowadays use a combination of the two.
You may try
document.getElementById('name').style.borderColor='#e52213';
document.getElementById('name').style.border='solid';
See the (quite) recent answer on the matplotlib repository, in which the following solution is suggested:
If you want to set the xticklabels:
ax.set_xticks([1,4,5])
ax.set_xticklabels([1,4,5], fontsize=12)
If you want to only increase the fontsize of the xticklabels, using the default values and locations (which is something I personally often need and find very handy):
ax.tick_params(axis="x", labelsize=12)
To do it all at once:
plt.setp(ax.get_xticklabels(), fontsize=12, fontweight="bold",
horizontalalignment="left")`
To make your function more portable, use it as such:
os.path.join(os.sep, 'home', 'build', 'test', 'sandboxes', todaystr, 'new_sandbox')
or
os.path.join(os.environ.get("HOME"), 'test', 'sandboxes', todaystr, 'new_sandbox')
this.setState creates an infinite loop when used in ComponentDidUpdate when there is no break condition in the loop. You can use redux to set a variable true in the if statement and then in the condition set the variable false then it will work.
Something like this.
if(this.props.route.params.resetFields){
this.props.route.params.resetFields = false;
this.setState({broadcastMembersCount: 0,isLinkAttached: false,attachedAffiliatedLink:false,affilatedText: 'add your affiliate link'});
this.resetSelectedContactAndGroups();
this.hideNext = false;
this.initialValue_1 = 140;
this.initialValue_2 = 140;
this.height = 20
}
In javascript you can do it this way
radians = degrees * (Math.PI/180);
degrees = radians * (180/Math.PI);
It may be "better" to not use attach
at all. On the plus side, you can save some typing if you use attach
. Let's say your dataset is called mydata
and you have variables called v1
, v2
, and v3
. If you don't attach mydata
, then you will type mean(mydata$v1)
to get the mean of v1
. If you do attach mydata
, then you will type mean(v1)
to get the mean of v1
. But, if you don't detach the mydata
dataset (every time), you'll get the message about the objects being masked going forward.
detach
every time.Don't use attach
. Instead, include the dataset name every time you refer to a variable. The form is mydata$v1
(name of data set, dollar sign, name of variable).
As for me, I used solution 1 a lot in the past, but I've moved to solution 2. It's a bit more typing in the beginning, but if you are going to use the code multiple times, it just seems cleaner.
Try reading the InputStream
of the runtime:
Runtime rt = Runtime.getRuntime();
String[] commands = {"system.exe", "-send", argument};
Process proc = rt.exec(commands);
BufferedReader br = new BufferedReader(
new InputStreamReader(proc.getInputStream()));
String line;
while ((line = br.readLine()) != null)
System.out.println(line);
You might also need to read the error stream (proc.getErrorStream()
) if the process is printing error output. You can redirect the error stream to the input stream if you use ProcessBuilder
.
static void PrintSmallestLargest(int[] arr)
{
if (arr.Length > 0)
{
int small = arr[0];
int large = arr[0];
for (int i = 0; i < arr.Length; i++)
{
if (large < arr[i])
{
int tmp = large;
large = arr[i];
arr[i] = large;
}
if (small > arr[i])
{
int tmp = small;
small = arr[i];
arr[i] = small;
}
}
Console.WriteLine("Smallest is {0}", small);
Console.WriteLine("Largest is {0}", large);
}
}
This way you can have smallest and largest number in a single loop.
If you've done something like accidentally npm link
generator-webapp after you've changed it, you can fix it by cloning the right generator and linking that.
git clone https://github.com/yeoman/generator-webapp.git;
# for fixing generator-webapp, replace with your required repository
cd generator-webapp;
npm link;
I found the easiest way to locate it, you can use
which python
it will show something like this:
/usr/bin/python
Try this one. It works for me.
SELECT * FROM eventList
WHERE DATE(date)
BETWEEN
'2013-03-26'
AND
'2013-03-27'
If index
doesn't find the searched string, it throws the ValueError
you're seeing. Either
catch the ValueError:
try:
i = s.index("")
del s[i]
except ValueError:
print "new_tag_list has no empty string"
or use find
, which returns -1 in that case.
i = s.find("")
if i >= 0:
del s[i]
else:
print "new_tag_list has no empty string"
An easy one as an extension method
public static class Extensions
{
public static Stream ConvertToBase64(this Stream stream)
{
byte[] bytes;
using (var memoryStream = new MemoryStream())
{
stream.CopyTo(memoryStream);
bytes = memoryStream.ToArray();
}
string base64 = Convert.ToBase64String(bytes);
return new MemoryStream(Encoding.UTF8.GetBytes(base64));
}
}
you can require .json files.
var parsedJSON = require('./file-name');
For example if you have a config.json
file in the same directory as your source code file you would use:
var config = require('./config.json');
or (file extension can be omitted):
var config = require('./config');
note that require
is synchronous and only reads the file once, following calls return the result from cache
Also note You should only use this for local files under your absolute control, as it potentially executes any code within the file.
Not pretty good solution, but you can try the hjson tool. It allows you to write text multi-lined in editor and then converts it to the proper valid JSON format.
Note: it adds '\n' characters for the new lines, but you can simply delete them in any text editor with the "Replace all.." function.
In Python 2.x this is not guaranteed as it is possible for True
and False
to be reassigned. However, even if this happens, boolean True and boolean False are still properly returned for comparisons.
In Python 3.x True
and False
are keywords and will always be equal to 1
and 0
.
Under normal circumstances in Python 2, and always in Python 3:
False
object is of type bool
which is a subclass of int
:
object
|
int
|
bool
It is the only reason why in your example, ['zero', 'one'][False]
does work. It would not work with an object which is not a subclass of integer, because list indexing only works with integers, or objects that define a __index__
method (thanks mark-dickinson).
Edit:
It is true of the current python version, and of that of Python 3. The docs for python 2 and the docs for Python 3 both say:
There are two types of integers: [...] Integers (int) [...] Booleans (bool)
and in the boolean subsection:
Booleans: These represent the truth values False and True [...] Boolean values behave like the values 0 and 1, respectively, in almost all contexts, the exception being that when converted to a string, the strings "False" or "True" are returned, respectively.
There is also, for Python 2:
In numeric contexts (for example when used as the argument to an arithmetic operator), they [False and True] behave like the integers 0 and 1, respectively.
So booleans are explicitly considered as integers in Python 2 and 3.
So you're safe until Python 4 comes along. ;-)
Consider also just doing mkdir -p data/images
in your Makefile, if the directory needs to be there during build.
If that's not good enough, just create an empty file in data/images and ignore data.
touch data/images/.gitignore
git add data/images/.gitignore
git commit -m "Add empty .gitignore to keep data/images around"
echo data >> .gitignore
git add .gitignore
git commit -m "Add data to .gitignore"
I didn't see how to add parameters to the method call, it took me a while to find it, so I add it here. How to pass parameters in (to the javascript function), use "arguments[0]" as the parameter place and then set the parameter as input parameter in the executeScript function.
driver.executeScript("function(arguments[0]);","parameter to send in");
fieldName = fieldName.substring(0, string.length()-1) + " ";
This solved the same error for me on Debian:
sudo apt-get install libffi-dev
and compile again
Reference: issue31652
It looks like you're having a permissions error, based on this message in your output: error: could not create '/lib/python2.7/site-packages/lxml': Permission denied
.
One thing you can try is doing a user install of the package with pip install lxml --user
. For more information on how that works, check out this StackOverflow answer. (Thanks to Ishaan Taylor for the suggestion)
You can also run pip install
as a superuser with sudo pip install lxml
but it is not generally a good idea because it can cause issues with your system-level packages.
You can use DataFrame.xs()
:
In [36]: df = DataFrame(np.random.randn(10, 4))
In [37]: df.columns = [np.random.choice(['a', 'b'], size=4).tolist(), np.random.choice(['c', 'd'], size=4)]
In [38]: df.columns.names = ['A', 'B']
In [39]: df
Out[39]:
A b a
B d d d d
0 -1.406 0.548 -0.635 0.576
1 -0.212 -0.583 1.012 -1.377
2 0.951 -0.349 -0.477 -1.230
3 0.451 -0.168 0.949 0.545
4 -0.362 -0.855 1.676 -2.881
5 1.283 1.027 0.085 -1.282
6 0.583 -1.406 0.327 -0.146
7 -0.518 -0.480 0.139 0.851
8 -0.030 -0.630 -1.534 0.534
9 0.246 -1.558 -1.885 -1.543
In [40]: df.xs('a', level='A', axis=1)
Out[40]:
B d d
0 -0.635 0.576
1 1.012 -1.377
2 -0.477 -1.230
3 0.949 0.545
4 1.676 -2.881
5 0.085 -1.282
6 0.327 -0.146
7 0.139 0.851
8 -1.534 0.534
9 -1.885 -1.543
If you want to keep the A
level (the drop_level
keyword argument is only available starting from v0.13.0):
In [42]: df.xs('a', level='A', axis=1, drop_level=False)
Out[42]:
A a
B d d
0 -0.635 0.576
1 1.012 -1.377
2 -0.477 -1.230
3 0.949 0.545
4 1.676 -2.881
5 0.085 -1.282
6 0.327 -0.146
7 0.139 0.851
8 -1.534 0.534
9 -1.885 -1.543
I've had a lot of trouble over the years trying to get QApplication::processEvents to work, as is used in some of the top answers. IIRC, if multiple locations end up calling it, it can end up causing some signals to not get processed (https://doc.qt.io/archives/qq/qq27-responsive-guis.html). My usual preferred option is to utilize a QEventLoop (https://doc.qt.io/archives/qq/qq27-responsive-guis.html#waitinginalocaleventloop).
inline void delay(int millisecondsWait)
{
QEventLoop loop;
QTimer t;
t.connect(&t, &QTimer::timeout, &loop, &QEventLoop::quit);
t.start(millisecondsWait);
loop.exec();
}
This link explains how to apply a cell style to a range of cells: http://msdn.microsoft.com/en-us/library/f1hh9fza.aspx
See this snippet:
Microsoft.Office.Tools.Excel.NamedRange rangeStyles =
this.Controls.AddNamedRange(this.Range["A1"], "rangeStyles");
rangeStyles.Value2 = "'Style Test";
rangeStyles.Style = "NewStyle";
rangeStyles.Columns.AutoFit();
I decided for myself as follows.
Need to get the path to 'MyProject/drivers' from the main file.
MyProject/
+--- RootPackge/
¦ +-- __init__.py
¦ +-- main.py
¦ +-- definitions.py
¦
+--- drivers/
¦ +-- geckodriver.exe
¦
+-- requirements.txt
+-- setup.py
definitions.py
Put not in the root of the project, but in the root of the main package
from pathlib import Path
ROOT_DIR = Path(__file__).parent.parent
Use ROOT_DIR:
main.py
# imports must be relative,
# not from the root of the project,
# but from the root of the main package.
# Not this way:
# from RootPackge.definitions import ROOT_DIR
# But like this:
from definitions import ROOT_DIR
# Here we use ROOT_DIR
# get path to MyProject/drivers
drivers_dir = ROOT_DIR / 'drivers'
# Thus, you can get the path to any directory
# or file from the project root
driver = webdriver.Firefox(drivers_dir)
driver.get('http://www.google.com')
Then PYTHON_PATH will not be used to access the 'definitions.py' file.
Works in PyCharm:
run file 'main.py' (ctrl + shift + F10 in Windows)
Works in CLI from project root:
$ py RootPackge/main.py
Works in CLI from RootPackge:
$ cd RootPackge
$ py main.py
Works from directories above project:
$ cd ../../../../
$ py MyWork/PythoProjects/MyProject/RootPackge/main.py
Works from anywhere if you give an absolute path to the main file.
Doesn't depend on venv.
After adding the reference, I had to use
Dim fso As New Scripting.FileSystemObject
It seems to me that you are operating on at least one false assumption.
In your question you say this:
BackgroundWorker is not the answer because it may be that I don't get the progress notification, which means there would be no call to ProgressChanged as the DoWork is a single call to an external function . . .
Actually, it does not matter whether you call the ProgressChanged
event or not. The whole purpose of that event is to temporarily transfer control back to the GUI thread to make an update that somehow reflects the progress of the work being done by the BackgroundWorker
. If you are simply displaying a marquee progress bar, it would actually be pointless to raise the ProgressChanged
event at all. The progress bar will continue rotating as long as it is displayed because the BackgroundWorker
is doing its work on a separate thread from the GUI.
(On a side note, DoWork
is an event, which means that it is not just "a single call to an external function"; you can add as many handlers as you like; and each of those handlers can contain as many function calls as it likes.)
To me it sounds like you believe that the only way for the GUI to update is by calling Application.DoEvents
:
I need to keep call the Application.DoEvents(); for the progress bar to keep rotating.
This is not true in a multithreaded scenario; if you use a BackgroundWorker
, the GUI will continue to be responsive (on its own thread) while the BackgroundWorker
does whatever has been attached to its DoWork
event. Below is a simple example of how this might work for you.
private void ShowProgressFormWhileBackgroundWorkerRuns() {
// this is your presumably long-running method
Action<string, string> exec = DoSomethingLongAndNotReturnAnyNotification;
ProgressForm p = new ProgressForm(this);
BackgroundWorker b = new BackgroundWorker();
// set the worker to call your long-running method
b.DoWork += (object sender, DoWorkEventArgs e) => {
exec.Invoke(path, parameters);
};
// set the worker to close your progress form when it's completed
b.RunWorkerCompleted += (object sender, RunWorkerCompletedEventArgs e) => {
if (p != null && p.Visible) p.Close();
};
// now actually show the form
p.Show();
// this only tells your BackgroundWorker to START working;
// the current (i.e., GUI) thread will immediately continue,
// which means your progress bar will update, the window
// will continue firing button click events and all that
// good stuff
b.RunWorkerAsync();
}
You say this:
I just need to call Application.DoEvents() so that the Marque progress bar will work, while the worker function works in the Main thread . . .
What you're asking for is simply not real. The "main" thread for a Windows Forms application is the GUI thread, which, if it's busy with your long-running method, is not providing visual updates. If you believe otherwise, I suspect you misunderstand what BeginInvoke
does: it launches a delegate on a separate thread. In fact, the example code you have included in your question to call Application.DoEvents
between exec.BeginInvoke
and exec.EndInvoke
is redundant; you are actually calling Application.DoEvents
repeatedly from the GUI thread, which would be updating anyway. (If you found otherwise, I suspect it's because you called exec.EndInvoke
right away, which blocked the current thread until the method finished.)
So yes, the answer you're looking for is to use a BackgroundWorker
.
You could use BeginInvoke
, but instead of calling EndInvoke
from the GUI thread (which will block it if the method isn't finished), pass an AsyncCallback
parameter to your BeginInvoke
call (instead of just passing null
), and close the progress form in your callback. Be aware, however, that if you do that, you're going to have to invoke the method that closes the progress form from the GUI thread, since otherwise you'll be trying to close a form, which is a GUI function, from a non-GUI thread. But really, all the pitfalls of using BeginInvoke
/EndInvoke
have already been dealt with for you with the BackgroundWorker
class, even if you think it's ".NET magic code" (to me, it's just an intuitive and useful tool).
PRIMARY KEY
AND UNIQUE KEY
are similar except it has different functions. Primary key makes the table row unique (i.e, there cannot be 2 row with the exact same key). You can only have 1 primary key in a database table.
Unique key makes the table column in a table row unique (i.e., no 2 table row may have the same exact value). You can have more than 1 unique key table column (unlike primary key which means only 1 table column in the table is unique).
INDEX
also creates uniqueness. MySQL (example) will create a indexing table for the column that is indexed. This way, it's easier to retrieve the table row value when the query is queried on that indexed table column. The disadvantage is that if you do many updating/deleting/create, MySQL has to manage the indexing tables (and that can be a performance bottleneck).
Hope this helps.
With Java 7 and later version, you can specify a byte literal in this way:
byte aByte = (byte)0b00100001;
Reference: http://docs.oracle.com/javase/8/docs/technotes/guides/language/binary-literals.html
Implementation is up to compiler developers.
If your question is "what will happen with such declaration" - compiler will set first array element to the value you've provided (0) and all others will be set to zero because it is a default value for omitted array elements.
it is php version the problem, had the same issue upgraded my php version to 5.6 solved the problem
beforeShowDate didn't work for me, so I went ahead and developed my own solution:
$('#embeded_calendar').datepicker({
minDate: date,
localToday:datePlusOne,
changeDate: true,
changeMonth: true,
changeYear: true,
yearRange: "-120:+1",
onSelect: function(selectedDateFormatted){
var selectedDate = $("#embeded_calendar").datepicker('getDate');
deactivateDates(selectedDate);
}
});
var excludedDates = [ "10-20-2017","10-21-2016", "11-21-2016"];
deactivateDates(new Date());
function deactivateDates(selectedDate){
setTimeout(function(){
var thisMonthExcludedDates = thisMonthDates(selectedDate);
thisMonthExcludedDates = getDaysfromDate(thisMonthExcludedDates);
var excludedTDs = page.find('td[data-handler="selectDay"]').filter(function(){
return $.inArray( $(this).text(), thisMonthExcludedDates) >= 0
});
excludedTDs.unbind('click').addClass('ui-datepicker-unselectable');
}, 10);
}
function thisMonthDates(date){
return $.grep( excludedDates, function( n){
var dateParts = n.split("-");
return dateParts[0] == date.getMonth() + 1 && dateParts[2] == date.getYear() + 1900;
});
}
function getDaysfromDate(datesArray){
return $.map( datesArray, function( n){
return n.split("-")[1];
});
}
That looks like the GitLab issue 5769.
In GitLab, since the repositories always end in
.git
, I must specify.git
at the end of the repository name to make it work, for example:import "example.org/myuser/mygorepo.git"
And:
$ go get example.org/myuser/mygorepo.git
Looks like GitHub solves this by appending
".git"
.
It is supposed to be resolved in “Added support for Go's repository retrieval. #5958”, provided the right meta tags are in place.
Although there is still an issue for Go itself: “cmd/go
: go get cannot discover meta tag in HTML5 documents”.
You can sort a map by value as below, more example here
//Sort a Map by their Value.
Map<Integer, String> random = new HashMap<Integer, String>();
random.put(1,"z");
random.put(6,"k");
random.put(5,"a");
random.put(3,"f");
random.put(9,"c");
Map<Integer, String> sortedMap =
random.entrySet().stream()
.sorted(Map.Entry.comparingByValue())
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
(e1, e2) -> e2, LinkedHashMap::new));
System.out.println("Sorted Map: " + Arrays.toString(sortedMap.entrySet().toArray()));
For Temporary change use following command
set global sql_mode="NO_BACKSLASH_ESCAPES,STRICT_TRANS_TABLE,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
For permanent change : go to config file /etc/my.cnf or /etc/mysql/mysql.conf.d/mysqld.cnf and add following lines then restart mysql service
[mysqld]
sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
The XLSB format is also dedicated to the macros embeded in an hidden workbook file located in excel startup folder (XLSTART).
A quick & dirty test with a xlsm or xlsb in XLSTART folder:
Measure-Command { $x = New-Object -com Excel.Application ;$x.Visible = $True ; $x.Quit() }
0,89s with a xlsb (binary) versus 1,3s with the same content in xlsm format (xml in a zip file) ... :)
As stated before, the image is treated as text, so the bottom is to accommodate for those pesky: "p,q,y,g,j"; the easiest solution is to assign the img display:block; in your css.
But this does inhibit the standard image behavior of flowing with the text. To keep that behavior and eliminate the space. I recommend wrapping the image with something like this.
<style>
.imageHolder
{
display: inline-block;
}
img.noSpace
{
display: block;
}
</style>
<div class="imageHolder"><img src="myimg.png" class="noSpace"/></div>
For those using Linux with Zsh:
1 - Add this line to your .zshrc
file
export PATH="$HOME/.config/composer/vendor/bin:$PATH"
2 - Run
source ~/.zshrc
$HOME
instead of ~
inside the path with Zsh.zshrc
file is hidden in the Home folderexport PATH=
exports the path in quotes so that the Laravel executable can be located by your systemA line feed means moving one line forward. The code is \n
.
A carriage return means moving the cursor to the beginning of the line. The code is \r
.
Windows editors often still use the combination of both as \r\n
in text files. Unix uses mostly only the \n
.
The separation comes from typewriter times, when you turned the wheel to move the paper to change the line and moved the carriage to restart typing on the beginning of a line. This was two steps.
Here is the cool regex style for digit grouping:
thenumber.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, "$1.");
Order is arbitrary, but there are several ways to sort them. One of them is as following:
#First, get the files:
import glob
import re
files =glob.glob1(img_folder,'*'+output_image_format)
# if you want sort files according to the digits included in the filename, you can do as following:
files = sorted(files, key=lambda x:float(re.findall("(\d+)",x)[0]))
var browser = navigator.appName;
var version = navigator.appVersion;
Note, however, that both will not necessarily reflect the truth. Many browsers can be set to mask as other browsers. So, for example, you can't always be sure if a user is actually surfing with IE6 or with Opera that pretends to be IE6.
when we pass vector by value in a function as an argument,it simply creates the copy of vector and no any effect happens on the vector which is defined in main function when we call that particular function. while when we pass vector by reference whatever is written in that particular function, every action will going to perform on the vector which is defined in main or other function when we call that particular function.
<?php require("ckeditor/ckeditor.php"); ?>
<script type="text/javascript" src="ckeditor/ckeditor.js"></script>
<script type="text/javascript" src="somedirectory/ckeditor/ckeditor.js"></script>
<textarea class="ckeditor" name="editor1"></textarea>
I use LuaSocket to get more precision.
require "socket"
print("Milliseconds: " .. socket.gettime()*1000)
This adds a dependency of course, but works fine for personal use (in benchmarking scripts for example).
If it's not important to use a RelativeLayout, you could use a LinearLayout, and do this:
LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setOrientation(LinearLayout.VERTICAL);
Doing this allows you to avoid the addRule method you've tried. You can simply use addView() to add new TextViews.
Complete code:
String[] textArray = {"One", "Two", "Three", "Four"};
LinearLayout linearLayout = new LinearLayout(this);
setContentView(linearLayout);
linearLayout.setOrientation(LinearLayout.VERTICAL);
for( int i = 0; i < textArray.length; i++ )
{
TextView textView = new TextView(this);
textView.setText(textArray[i]);
linearLayout.addView(textView);
}
The difference is in the scope of the variables declared with each.
In practice, there are a number of useful consequences of the difference in scope:
let
variables are only visible in their nearest enclosing block ({ ... }
).let
variables are only usable in lines of code that occur after the variable is declared (even though they are hoisted!).let
variables may not be redeclared by a subsequent var
or let
.let
variables are not added to the global window
object.let
variables are easy to use with closures (they do not cause race conditions).The restrictions imposed by let
reduce the visibility of the variables and increase the likelihood that unexpected name collisions will be found early. This makes it easier to track and reason about variables, including their reachability(helping with reclaiming unused memory).
Consequently, let
variables are less likely to cause problems when used in large programs or when independently-developed frameworks are combined in new and unexpected ways.
var
may still be useful if you are sure you want the single-binding effect when using a closure in a loop (#5) or for declaring externally-visible global variables in your code (#4). Use of var
for exports may be supplanted if export
migrates out of transpiler space and into the core language.
1. No use outside nearest enclosing block:
This block of code will throw a reference error because the second use of x
occurs outside of the block where it is declared with let
:
{
let x = 1;
}
console.log(`x is ${x}`); // ReferenceError during parsing: "x is not defined".
In contrast, the same example with var
works.
2. No use before declaration:
This block of code will throw a ReferenceError
before the code can be run because x
is used before it is declared:
{
x = x + 1; // ReferenceError during parsing: "x is not defined".
let x;
console.log(`x is ${x}`); // Never runs.
}
In contrast, the same example with var
parses and runs without throwing any exceptions.
3. No redeclaration:
The following code demonstrates that a variable declared with let
may not be redeclared later:
let x = 1;
let x = 2; // SyntaxError: Identifier 'x' has already been declared
4. Globals not attached to window
:
var button = "I cause accidents because my name is too common.";
let link = "Though my name is common, I am harder to access from other JS files.";
console.log(link); // OK
console.log(window.link); // undefined (GOOD!)
console.log(window.button); // OK
5. Easy use with closures:
Variables declared with var
do not work well with closures inside loops. Here is a simple loop that outputs the sequence of values that the variable i
has at different points in time:
for (let i = 0; i < 5; i++) {
console.log(`i is ${i}`), 125/*ms*/);
}
Specifically, this outputs:
i is 0
i is 1
i is 2
i is 3
i is 4
In JavaScript we often use variables at a significantly later time than when they are created. When we demonstrate this by delaying the output with a closure passed to setTimeout
:
for (let i = 0; i < 5; i++) {
setTimeout(_ => console.log(`i is ${i}`), 125/*ms*/);
}
... the output remains unchanged as long as we stick with let
. In contrast, if we had used var i
instead:
for (var i = 0; i < 5; i++) {
setTimeout(_ => console.log(`i is ${i}`), 125/*ms*/);
}
... the loop unexpectedly outputs "i is 5" five times:
i is 5
i is 5
i is 5
i is 5
i is 5
You convert the hex string to a byte array.
public static byte[] StringToByteArray(string hex) {
return Enumerable.Range(0, hex.Length)
.Where(x => x % 2 == 0)
.Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
.ToArray();
}
Credit: Jared Par
And then use WriteAllBytes to write to the file system.
For SQL Server 2008, the best and index friendly way is
DELETE from Table WHERE Date > CAST(GETDATE() as DATE);
For prior SQL Server versions, date maths will work faster than a convert to varchar. Even converting to varchar can give you the wrong result, because of regional settings.
DELETE from Table WHERE Date > DATEDIFF(d, 0, GETDATE());
Note: it is unnecessary to wrap the DATEDIFF
with another DATEADD
If a GPU device has, for example, 4 multiprocessing units, and they can run 768 threads each: then at a given moment no more than 4*768 threads will be really running in parallel (if you planned more threads, they will be waiting their turn).
threads are organized in blocks. A block is executed by a multiprocessing unit. The threads of a block can be indentified (indexed) using 1Dimension(x), 2Dimensions (x,y) or 3Dim indexes (x,y,z) but in any case xyz <= 768 for our example (other restrictions apply to x,y,z, see the guide and your device capability).
Obviously, if you need more than those 4*768 threads you need more than 4 blocks. Blocks may be also indexed 1D, 2D or 3D. There is a queue of blocks waiting to enter the GPU (because, in our example, the GPU has 4 multiprocessors and only 4 blocks are being executed simultaneously).
Suppose we want one thread to process one pixel (i,j).
We can use blocks of 64 threads each. Then we need 512*512/64 = 4096 blocks (so to have 512x512 threads = 4096*64)
It's common to organize (to make indexing the image easier) the threads in 2D blocks having blockDim = 8 x 8 (the 64 threads per block). I prefer to call it threadsPerBlock.
dim3 threadsPerBlock(8, 8); // 64 threads
and 2D gridDim = 64 x 64 blocks (the 4096 blocks needed). I prefer to call it numBlocks.
dim3 numBlocks(imageWidth/threadsPerBlock.x, /* for instance 512/8 = 64*/
imageHeight/threadsPerBlock.y);
The kernel is launched like this:
myKernel <<<numBlocks,threadsPerBlock>>>( /* params for the kernel function */ );
Finally: there will be something like "a queue of 4096 blocks", where a block is waiting to be assigned one of the multiprocessors of the GPU to get its 64 threads executed.
In the kernel the pixel (i,j) to be processed by a thread is calculated this way:
uint i = (blockIdx.x * blockDim.x) + threadIdx.x;
uint j = (blockIdx.y * blockDim.y) + threadIdx.y;
You can use built-in spacing from Bootstrap so no need for additional CSS there. This is for Bootstrap 4.
Note that, from March 15th, 2013, you can move or rename a file directly from GitHub:
(you don't even need to clone that repo, git mv xx
and git push
back to GitHub!)
You can also move files to entirely new locations using just the filename field.
To navigate down into a folder, just type the name of the folder you want to move the file into followed by/
.
The folder can be one that’s already part of your repository, or it can even be a brand-new folder that doesn’t exist yet!
It can be changed in the $CATALINA_BASE/conf/server.xml
in the <Host />
. See the Tomcat documentation, specifically the section in regards to the Host container:
The default is webapps
relative to the $CATALINA_BASE
. An absolute pathname can be used.
Hope that helps.
You shouldn't use both ngRoute
and UI-router
. Here's a sample code for UI-router:
repoApp.config(function($stateProvider, $urlRouterProvider) {_x000D_
_x000D_
$stateProvider_x000D_
.state('state1', {_x000D_
url: "/state1",_x000D_
templateUrl: "partials/state1.html",_x000D_
controller: 'YourCtrl'_x000D_
})_x000D_
_x000D_
.state('state2', {_x000D_
url: "/state2",_x000D_
templateUrl: "partials/state2.html",_x000D_
controller: 'YourOtherCtrl'_x000D_
});_x000D_
$urlRouterProvider.otherwise("/state1");_x000D_
});_x000D_
//etc.
_x000D_
You can find a great answer on the difference between these two in this thread: What is the difference between angular-route and angular-ui-router?
You can also consult UI-Router's docs here: https://github.com/angular-ui/ui-router
I wrote a dom adapter for my jackson based json processing framework long time ago. It uses the nu.xom library. The resulting dom tree works with the java xpath and xslt facilities. I made some implementation choices that are pretty straightforward. For example the root node is always called "root", arrays go into an ol node with li sub elements (like in html), and everything else is just a sub node with a primitive value or another object node.
Usage:
JsonObject sampleJson = sampleJson();
org.w3c.dom.Document domNode = JsonXmlConverter.getW3cDocument(sampleJson, "root");
If you want to list all the files currently being tracked under the branch master
, you could use this command:
git ls-tree -r master --name-only
If you want a list of files that ever existed (i.e. including deleted files):
git log --pretty=format: --name-only --diff-filter=A | sort - | sed '/^$/d'
One requirement for remote debugging is that the windows account used to run SSMS be part of the sysadmin role. See this MSDN link: http://msdn.microsoft.com/en-us/library/cc646024%28v=sql.105%29.aspx
try this
$.getJSON(url, function(data){
$.each(data.response.venue.tips.groups.items, function (index, value) {
console.log(this.text);
});
});
Good answers though, anyway I want to share my Object Oriented solution Up to date for swift 5.
please check it out: AsyncTask
Conceptually inspired by android's AsyncTask, I've wrote my own class in Swift
AsyncTask enables proper and easy use of the UI thread. This class allows to perform background operations and publish results on the UI thread.
Here are few usage examples
Example 1 -
AsyncTask(backgroundTask: {(p:String)->Void in//set BGParam to String and BGResult to Void
print(p);//print the value in background thread
}).execute("Hello async");//execute with value 'Hello async'
Example 2 -
let task2=AsyncTask(beforeTask: {
print("pre execution");//print 'pre execution' before backgroundTask
},backgroundTask:{(p:Int)->String in//set BGParam to Int & BGResult to String
if p>0{//check if execution value is bigger than zero
return "positive"//pass String "poitive" to afterTask
}
return "negative";//otherwise pass String "negative"
}, afterTask: {(p:String) in
print(p);//print background task result
});
task2.execute(1);//execute with value 1
It has 2 generic types:
BGParam
- the type of the parameter sent to the task upon execution.
BGResult
- the type of the result of the background computation.
When you create an AsyncTask you can those types to whatever you need to pass in and out of the background task, but if you don't need those types, you can mark it as unused with just setting it to: Void
or with shorter syntax: ()
When an asynchronous task is executed, it goes through 3 steps:
beforeTask:()->Void
invoked on the UI thread just before the task is executed.backgroundTask: (param:BGParam)->BGResult
invoked on the background thread immediately afterafterTask:(param:BGResult)->Void
invoked on the UI thread with result from the background taskI use environment for that. It works automatically and you don't have to create new injectable service and most usefull for me, don't need to import via constructor.
1) Create environment variable in your environment.ts
export const environment = {
...
// runtime variables
isContentLoading: false,
isDeployNeeded: false
}
2) Import environment.ts in *.ts file and create public variable (i.e. "env") to be able to use in html template
import { environment } from 'environments/environment';
@Component(...)
export class TestComponent {
...
env = environment;
}
3) Use it in template...
<app-spinner *ngIf='env.isContentLoading'></app-spinner>
in *.ts ...
env.isContentLoading = false
(or just environment.isContentLoading in case you don't need it for template)
You can create your own set of globals within environment.ts like so:
export const globals = {
isContentLoading: false,
isDeployNeeded: false
}
and import directly these variables (y)
@Column
is not the appropriate annotation. You don't want to store a whole User or Question in a column. You want to create an association between the entities. Start by renaming Questions
to Question
, since an instance represents a single question, and not several ones. Then create the association:
@Entity
@Table(name = "UserAnswer")
public class UserAnswer {
// this entity needs an ID:
@Id
@Column(name="useranswer_id")
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@ManyToOne
@JoinColumn(name = "user_id")
private User user;
@ManyToOne
@JoinColumn(name = "question_id")
private Question question;
@Column(name = "response")
private String response;
//getter and setter
}
The Hibernate documentation explains that. Read it. And also read the javadoc of the annotations.
Try with padding
and line-height
-
input[type="text"]{ padding: 20px 10px; line-height: 28px; }
returning true or false indicates that whether execution should continue or stop right there. So just an example
<input type="button" onclick="return func();" />
Now if func() is defined like this
function func()
{
// do something
return false;
}
the click event will never get executed. On the contrary if return true is written then the click event will always be executed.
I think ResponseEntityExceptionHandler
meets your requirements. A sample piece of code for HTTP 400:
@ControllerAdvice
public class MyExceptionHandler extends ResponseEntityExceptionHandler {
@ResponseStatus(value = HttpStatus.BAD_REQUEST)
@ExceptionHandler({HttpMessageNotReadableException.class, MethodArgumentNotValidException.class,
HttpRequestMethodNotSupportedException.class})
public ResponseEntity<Object> badRequest(HttpServletRequest req, Exception exception) {
// ...
}
}
You can check this post
A better alternative to Control Panel is to use this freeware program from SourceForge called Pathenator.
However, it only works for a system that has .NET 4.0 or greater such as Windows 7, Windows 8, or Windows 10.
The logic of determining a "wrong" url is specific to your application. It could be a simple file not found error or something else if you are doing a RESTful app. Once you've figured that out, sending a redirect is as simple as:
response.writeHead(302, {
'Location': 'your/404/path.html'
//add other headers here...
});
response.end();
per @dantheta's comment:
As of npm 1.1.65, Github URL can be more concise user/project. npmjs.org/doc/files/package.json.html You can attach the branch like user/project#branch
So
"babel-eslint": "babel/babel-eslint",
Or for tag v1.12.0 on jscs:
"jscs": "jscs-dev/node-jscs#v1.12.0",
Note, if you use npm --save, you'll get the longer git
From https://docs.npmjs.com/cli/v6/configuring-npm/package-json#git-urls-as-dependencies
Git URLs as Dependencies
Git urls are of the form:
git+ssh://[email protected]:npm/cli.git#v1.0.27
git+ssh://[email protected]:npm/cli#semver:^5.0
git+https://[email protected]/npm/cli.git
git://github.com/npm/cli.git#v1.0.27
If
#<commit-ish>
is provided, it will be used to clone exactly that commit. If > the commit-ish has the format#semver:<semver>
,<semver>
can be any valid semver range or exact version, and npm will look for any tags or refs matching that range in the remote repository, much as it would for a registry dependency. If neither#<commit-ish>
or#semver:<semver>
is specified, then master is used.
GitHub URLs
As of version 1.1.65, you can refer to GitHub urls as just "foo": "user/foo-project". Just as with git URLs, a commit-ish suffix can be included. For example:
{ "name": "foo", "version": "0.0.0", "dependencies": { "express": "expressjs/express", "mocha": "mochajs/mocha#4727d357ea", "module": "user/repo#feature\/branch" } }```
Change
var svg = document.documentElement;
to
var svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
so that you create a SVG
element.
For the link to be an hyperlink, simply add a href
attribute :
h.setAttributeNS(null, 'href', 'http://www.google.com');
A simple and a good straight-forward example:
<script>
// This gets the username from the Razor engine and puts it
// in JavaScript to create a variable I can access from the
// client side.
//
// It's an odd workaraound, but it works.
@{
var outScript = "var razorUserName = " + "\"" + @User.Identity.Name + "\"";
}
@MvcHtmlString.Create(outScript);
</script>
This creates a script in your page at the location you place the code above which looks like the following:
<script>
// This gets the username from the Razor engine and puts it
// in JavaScript to create a variable I can access from
// client side.
//
// It's an odd workaraound, but it works.
var razorUserName = "daylight";
</script>
Now you have a global JavaScript variable named razorUserName
which you can access and use on the client. The Razor engine has obviously extracted the value from @User.Identity.Name
(server-side variable) and put it in the code it writes to your script tag.
For Android Studio 2.0
C:\Users\UserName\AndroidStudioProjects\MyAppName\app\build\outputs\apk
Here UserName is your computer user name and MyAppName is your android app name
$.post('someUri', { },
function(data){ doSomeStuff })
.fail(function(error) { alert(error.responseJSON) });
Late to the party, but this might be of interest for people looking to add custom fonts to their ggplots
inside a shiny
app on shinyapps.io.
You can:
This leads to the following upper section inside the app.R
file:
dir.create('~/.fonts')
file.copy("www/IndieFlower.ttf", "~/.fonts")
system('fc-cache -f ~/.fonts')
A full example app can be found here.
(This is an already answered, old question.. but just for the record :)
I was inspired by Yang's script, and came up with this small tool, named memusg. I simply increased the sampling rate to 0.1 to handle much short living processes. Instead of monitoring a single process, I made it measure rss sum of the process group. (Yeah, I write lots of separate programs that work together) It currently works on Mac OS X and Linux. The usage had to be similar to that of time
:
memusg ls -alR / >/dev/null
It only shows the peak for the moment, but I'm interested in slight extensions for recording other (rough) statistics.
It's good to have such simple tool for just taking a look before we start any serious profiling.
Custom zoom view in Kotlin
import android.content.Context
import android.graphics.Matrix
import android.graphics.PointF
import android.util.AttributeSet
import android.util.Log
import android.view.MotionEvent
import android.view.ScaleGestureDetector
import android.view.ScaleGestureDetector.SimpleOnScaleGestureListener
import androidx.appcompat.widget.AppCompatImageView
class ZoomImageview : AppCompatImageView {
var matri: Matrix? = null
var mode = NONE
// Remember some things for zooming
var last = PointF()
var start = PointF()
var minScale = 1f
var maxScale = 3f
lateinit var m: FloatArray
var viewWidth = 0
var viewHeight = 0
var saveScale = 1f
protected var origWidth = 0f
protected var origHeight = 0f
var oldMeasuredWidth = 0
var oldMeasuredHeight = 0
var mScaleDetector: ScaleGestureDetector? = null
var contex: Context? = null
constructor(context: Context) : super(context) {
sharedConstructing(context)
}
constructor(context: Context, attrs: AttributeSet?) : super(context, attrs) {
sharedConstructing(context)
}
private fun sharedConstructing(context: Context) {
super.setClickable(true)
this.contex= context
mScaleDetector = ScaleGestureDetector(context, ScaleListener())
matri = Matrix()
m = FloatArray(9)
imageMatrix = matri
scaleType = ScaleType.MATRIX
setOnTouchListener { v, event ->
mScaleDetector!!.onTouchEvent(event)
val curr = PointF(event.x, event.y)
when (event.action) {
MotionEvent.ACTION_DOWN -> {
last.set(curr)
start.set(last)
mode = DRAG
}
MotionEvent.ACTION_MOVE -> if (mode == DRAG) {
val deltaX = curr.x - last.x
val deltaY = curr.y - last.y
val fixTransX = getFixDragTrans(deltaX, viewWidth.toFloat(), origWidth * saveScale)
val fixTransY = getFixDragTrans(deltaY, viewHeight.toFloat(), origHeight * saveScale)
matri!!.postTranslate(fixTransX, fixTransY)
fixTrans()
last[curr.x] = curr.y
}
MotionEvent.ACTION_UP -> {
mode = NONE
val xDiff = Math.abs(curr.x - start.x).toInt()
val yDiff = Math.abs(curr.y - start.y).toInt()
if (xDiff < CLICK && yDiff < CLICK) performClick()
}
MotionEvent.ACTION_POINTER_UP -> mode = NONE
}
imageMatrix = matri
invalidate()
true // indicate event was handled
}
}
fun setMaxZoom(x: Float) {
maxScale = x
}
private inner class ScaleListener : SimpleOnScaleGestureListener() {
override fun onScaleBegin(detector: ScaleGestureDetector): Boolean {
mode = ZOOM
return true
}
override fun onScale(detector: ScaleGestureDetector): Boolean {
var mScaleFactor = detector.scaleFactor
val origScale = saveScale
saveScale *= mScaleFactor
if (saveScale > maxScale) {
saveScale = maxScale
mScaleFactor = maxScale / origScale
} else if (saveScale < minScale) {
saveScale = minScale
mScaleFactor = minScale / origScale
}
if (origWidth * saveScale <= viewWidth || origHeight * saveScale <= viewHeight) matri!!.postScale(mScaleFactor, mScaleFactor, viewWidth / 2.toFloat(), viewHeight / 2.toFloat()) else matri!!.postScale(mScaleFactor, mScaleFactor, detector.focusX, detector.focusY)
fixTrans()
return true
}
}
fun fixTrans() {
matri!!.getValues(m)
val transX = m[Matrix.MTRANS_X]
val transY = m[Matrix.MTRANS_Y]
val fixTransX = getFixTrans(transX, viewWidth.toFloat(), origWidth * saveScale)
val fixTransY = getFixTrans(transY, viewHeight.toFloat(), origHeight * saveScale)
if (fixTransX != 0f || fixTransY != 0f) matri!!.postTranslate(fixTransX, fixTransY)
}
fun getFixTrans(trans: Float, viewSize: Float, contentSize: Float): Float {
val minTrans: Float
val maxTrans: Float
if (contentSize <= viewSize) {
minTrans = 0f
maxTrans = viewSize - contentSize
} else {
minTrans = viewSize - contentSize
maxTrans = 0f
}
if (trans < minTrans) return -trans + minTrans
if (trans > maxTrans) return -trans + maxTrans
return 0f
}
fun getFixDragTrans(delta: Float, viewSize: Float, contentSize: Float): Float {
if (contentSize <= viewSize) {
return 0f
} else {
return delta
}
}
override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec)
viewWidth = MeasureSpec.getSize(widthMeasureSpec)
viewHeight = MeasureSpec.getSize(heightMeasureSpec)
//
// Rescales image on rotation
//
if (oldMeasuredHeight == viewWidth && oldMeasuredHeight == viewHeight || viewWidth == 0 || viewHeight == 0) return
oldMeasuredHeight = viewHeight
oldMeasuredWidth = viewWidth
if (saveScale == 1f) {
//Fit to screen.
val scale: Float
val drawable = drawable
if (drawable == null || drawable.intrinsicWidth == 0 || drawable.intrinsicHeight == 0) return
val bmWidth = drawable.intrinsicWidth
val bmHeight = drawable.intrinsicHeight
Log.d("bmSize", "bmWidth: $bmWidth bmHeight : $bmHeight")
val scaleX = viewWidth.toFloat() / bmWidth.toFloat()
val scaleY = viewHeight.toFloat() / bmHeight.toFloat()
scale = Math.min(scaleX, scaleY)
matri!!.setScale(scale, scale)
// Center the image
var redundantYSpace = viewHeight.toFloat() - scale * bmHeight.toFloat()
var redundantXSpace = viewWidth.toFloat() - scale * bmWidth.toFloat()
redundantYSpace /= 2.toFloat()
redundantXSpace /= 2.toFloat()
matri!!.postTranslate(redundantXSpace, redundantYSpace)
origWidth = viewWidth - 2 * redundantXSpace
origHeight = viewHeight - 2 * redundantYSpace
imageMatrix = matri
}
fixTrans()
}
companion object {
// We can be in one of these 3 states
const val NONE = 0
const val DRAG = 1
const val ZOOM = 2
const val CLICK = 3
}
}
You have a few options depending on why you want to return different types.
a) You can just return an object, and the caller can cast it (possibly after type checks) to what they want. This means of course, that you lose a lot of the advantages of static typing.
b) If the types returned all have a 'requirement' in common, you might be able to use generics with constriants.
c) Create a common interface between all of the possible return types and then return the interface.
d) Switch to F# and use pattern matching and discriminated unions. (Sorry, slightly tongue in check there!)
Simple XML http://simple.sourceforge.net/ is very easy for (de)serializing objects.
"mxc" is right. fetchType
just specifies when the relation should be resolved.
To optimize eager loading by using an outer join you have to add
@Fetch(FetchMode.JOIN)
to your field. This is a hibernate specific annotation.
I'm still having problems figuring out exactly how I find out what a user is typing into a ckeditor textarea.
Ok, this is fairly easy. Assuming your editor is named "editor1", this will give you an alert with your its contents:
alert(CKEDITOR.instances.editor1.getData());
The harder part is detecting when the user types. From what I can tell, there isn't actually support to do that (and I'm not too impressed with the documentation btw). See this article: http://alfonsoml.blogspot.com/2011/03/onchange-event-for-ckeditor.html
Instead, I would suggest setting a timer that is going to continuously update your second div with the value of the textarea:
timer = setInterval(updateDiv,100);
function updateDiv(){
var editorText = CKEDITOR.instances.editor1.getData();
$('#trackingDiv').html(editorText);
}
This seems to work just fine. Here's the entire thing for clarity:
<textarea id="editor1" name="editor1">This is sample text</textarea>
<div id="trackingDiv" ></div>
<script type="text/javascript">
CKEDITOR.replace( 'editor1' );
timer = setInterval(updateDiv,100);
function updateDiv(){
var editorText = CKEDITOR.instances.editor1.getData();
$('#trackingDiv').html(editorText);
}
</script>
Use
Try_convert(float,[Value])
See https://raresql.com/2013/04/26/sql-server-how-to-convert-varchar-to-float/
I think this is very nice and short
<img src="imagenotfound.gif" alt="Image not found" onerror="this.src='imagefound.gif';" />
But, be careful. The user's browser will be stuck in an endless loop if the onerror image itself generates an error.
EDIT
To avoid endless loop, remove the onerror
from it at once.
<img src="imagenotfound.gif" alt="Image not found" onerror="this.onerror=null;this.src='imagefound.gif';" />
By calling this.onerror=null
it will remove the onerror then try to get the alternate image.
NEW I would like to add a jQuery way, if this can help anyone.
<script>
$(document).ready(function()
{
$(".backup_picture").on("error", function(){
$(this).attr('src', './images/nopicture.png');
});
});
</script>
<img class='backup_picture' src='./images/nonexistent_image_file.png' />
You simply need to add class='backup_picture' to any img tag that you want a backup picture to load if it tries to show a bad image.
yu have to install the correct version for your computer 32 or 63 bits thats all
You could also try putting your code in the Activated event of the form, if you want it to occur, just when the form is activated. You would need to put in a boolean "has executed" check though if it is only supposed to run on the first activation.
Check if the session is empty or not in C# MVC Version Lower than 5.
if (!string.IsNullOrEmpty(Session["emp_num"] as string))
{
//cast it and use it
//business logic
}
Check if the session is empty or not in C# MVC Version Above 5.
if(Session["emp_num"] != null)
{
//cast it and use it
//business logic
}
Not as clean as bool(c) but it was an excuse to use ternary.
def myfunc(a,b):
return True if a.intersection(b) else False
Also using a bit of the same logic there is no need to assign to c unless you are using it for something else.
def myfunc(a,b):
return bool(a.intersection(b))
Finally, I would assume you want a True / False value because you are going to perform some sort of boolean test with it. I would recommend skipping the overhead of a function call and definition by simply testing where you need it.
Instead of:
if (myfunc(a,b)):
# Do something
Maybe this:
if a.intersection(b):
# Do something
Function pointer is usually defined by typedef
, and used as param & return value.
Above answers already explained a lot, I just give a full example:
#include <stdio.h>
#define NUM_A 1
#define NUM_B 2
// define a function pointer type
typedef int (*two_num_operation)(int, int);
// an actual standalone function
static int sum(int a, int b) {
return a + b;
}
// use function pointer as param,
static int sum_via_pointer(int a, int b, two_num_operation funp) {
return (*funp)(a, b);
}
// use function pointer as return value,
static two_num_operation get_sum_fun() {
return ∑
}
// test - use function pointer as variable,
void test_pointer_as_variable() {
// create a pointer to function,
two_num_operation sum_p = ∑
// call function via pointer
printf("pointer as variable:\t %d + %d = %d\n", NUM_A, NUM_B, (*sum_p)(NUM_A, NUM_B));
}
// test - use function pointer as param,
void test_pointer_as_param() {
printf("pointer as param:\t %d + %d = %d\n", NUM_A, NUM_B, sum_via_pointer(NUM_A, NUM_B, &sum));
}
// test - use function pointer as return value,
void test_pointer_as_return_value() {
printf("pointer as return value:\t %d + %d = %d\n", NUM_A, NUM_B, (*get_sum_fun())(NUM_A, NUM_B));
}
int main() {
test_pointer_as_variable();
test_pointer_as_param();
test_pointer_as_return_value();
return 0;
}
I used SSH.Net in a project a while ago and was very happy with it. It also comes with a good documentation with lots of samples on how to use it.
The original package website can be still found here, including the documentation (which currently isn't available on GitHub).
For your case the code would be something like this.
using (var client = new SshClient("hostnameOrIp", "username", "password"))
{
client.Connect();
client.RunCommand("etc/init.d/networking restart");
client.Disconnect();
}
It is usually handled automatically.
If autodiscovery doesn't work. Edit the elastic search config file, by enabling unicast discovery
Node 1:
cluster.name: mycluster
node.name: "node1"
node.master: true
node.data: true
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: ["node1.example.com"]
Node 2:
cluster.name: mycluster
node.name: "node2"
node.master: false
node.data: true
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: ["node1.example.com"]
and so on for node 3,4,5. Make node 1 master, and the rest only as data nodes.
Edit: Please note that by ES rule, if you have N
nodes, then by convention, N/2+1
nodes should be masters for fail-over mechanisms They may or may not be data nodes, though.
Also, in case auto-discovery doesn't work, most probable reason is because the network doesn't allow it (and therefore disabled). If too many auto-discovery pings take place across multiple servers, the resources to manage those pings will prevent other services from running correctly.
For ex, think of a 10,000 node cluster and all 10,000 nodes doing the auto-pings.
Suppose you want the value of the first item.
ListBox list = new ListBox();
Console.Write(list.Items[0].Value);
As the error clearly states, OffenceBox.Text()
is not a function and therefore doesn't make sense.
HTML:
<a href="/" class="btn-disabled" disabled="disabled">123n</a>
CSS:
.btn-disabled,
.btn-disabled[disabled] {
opacity: .4;
cursor: default !important;
pointer-events: none;
}
If you need input from termial, try this
lc=`echo -n "xxx_${yyy}_iOS" | base64`
-n
option will not input "\n" character to base64 command.
Yess, possible with conditions:
If you have your app installed in the user phone and a server app communicating with this app, and there at last one of location service providers activated in the user phone, and some horrible android permissions!
In most of android phones there 3 location providers that can give exact location (GPS_PROVIDER 1m) or estimated (NETWORK_PROVIDER around 2-20m) and PASSIVE_PROVIDER (more in LocationManager official documentation).
1* App sends SMS to user's phone
Yess, can be server app or you create an android app if you want something automated, so you can do it manually by sending SMS from your default SMS app! I use Kannel: Open Source WAP and SMS Gateway and here (lot of APIs to send SMS )
2* App receives SMS at user's phone from the SMS sender
Yess, you can get all received SMS, and you can filter them by sender phone number! and do some actions when your specified sms received, basic tuto here (i do some actions according to the content of my SMS)
3* App gets location coordinates of the user's phone
Yess, you can get actual user coordinates easily if one of location providers is activated, so you can get last known location when the user have activated one of location providers, if those disabled or the phone don't have GPS hardware you can use Open Cell Id api to get the nearest cell coordinates(10m-10Km) or Loc8 api but those not available in all around the world, and some apps use IP location apis to get the country, city and province, here the simplest way to get current user location.
4* App sends location coordinates to the SMS sender via SMS
Yess, you can get sender phone number and send user location, immediately when SMS received or at specified times in the day.
(Those 4 yesses for you :) )
Viber and other apps that access to users locations, identify there users by there phone numbers by obligating them to send SMS to the server app to create an account and activate the free service (Ex:VOIP) , and lunch a service that can:
And your application users must accept all of that when installing it, of corse i don't gonna install apps like this because i read permissions before installing :) and permissions maybe something like that:
<uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.SEND_SMS"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<-- and more if you wanna more -->
The final user will accept for something like that (those permissions of an android app u asked about):
This app has access to these permissions:
Your accounts -create accounts and set passwords -find accounts on the device -add or remove accounts -use accounts on the device -read Google service configuration
Your location -approximate location (network-based) -precise location (GPS and network-based)
Your messages -receive text messages (SMS) -send SMS messages -edit your text messages (SMS or MMS) -read your text messages (SMS or MMS)
Network communication -receive data from Internet -full network access -view Wi-Fi connections -view network connections -change network connectivity
Phone calls -read phone status and identity -directly call phone numbers
Storage -modify or delete the contents of your USB storage
Your applications information -retrieve running apps -close other apps -run at startup
Bluetooth -pair with Bluetooth devices -access Bluetooth settings
Camera -take pictures and videos
Other Application UI -draw over other apps
Microphone -record audio
Lock screen -disable your screen lock
Your social information -read your contacts -modify your contacts -read call log -write call log -read your social stream -write to your social stream
Development tools -read sensitive log data
System tools -modify system settings -send sticky broadcast -test access to protected storage
Affects battery -control vibration -prevent device from sleeping
Audio settings -change your audio settings
Sync Settings -read sync settings -toggle sync on and off -read sync statistics
Wallpaper -set wallpaper
I am using PuTTY and the vi editor. If I select five lines using my mouse and I want to delete those lines, how can I do that?
Forget the mouse. To remove 5 lines, either:
Also, how can I select the lines using my keyboard as I can in Windows where I press Shift and move the arrows to select the text? How can I do that in vi?
As I said, either use Shift-v to enter linewise selection mode or v to enter characterwise selection mode or Ctrl-v to enter blockwise selection mode. Then move with h, j, k and l.
I suggest spending some time with the Vim Tutor (run vimtutor
) to get more familiar with Vim in a very didactic way.
flex-box
The keys to this technique:
overflow: hidden
.justify-content: space-between
on the ul
(which is a flex-box) to force its flex-items to stretch to the left and right edges.margin-left: -1px
on the ul
to cause its left edge to overflow the container.border-left: 1px
on the li
flex-items.The container acts as a mask hiding the borders of any flex-items touching its left edge.
.flex-list {
position: relative;
margin: 1em;
overflow: hidden;
}
.flex-list ul {
display: flex;
flex-direction: row;
flex-wrap: wrap;
justify-content: space-between;
margin-left: -1px;
}
.flex-list li {
flex-grow: 1;
flex-basis: auto;
margin: .25em 0;
padding: 0 1em;
text-align: center;
border-left: 1px solid #ccc;
background-color: #fff;
}
_x000D_
<link href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css" rel="stylesheet"/>
<div class="flex-list">
<ul>
<li>Dogs</li>
<li>Cats</li>
<li>Lions</li>
<li>Tigers</li>
<li>Zebras</li>
<li>Giraffes</li>
<li>Bears</li>
<li>Hippopotamuses</li>
<li>Antelopes</li>
<li>Unicorns</li>
<li>Seagulls</li>
</ul>
</div>
_x000D_
I have used mpdf in my project. In Codeigniter-3, putted mpdf files under application/third_party and then used in this way:
/**
* This function is used to display data in PDF file.
* function is using mpdf api to generate pdf.
* @param number $id : This is unique id of table.
*/
function generatePDF($id){
require APPPATH . '/third_party/mpdf/vendor/autoload.php';
//$mpdf=new mPDF();
$mpdf = new mPDF('utf-8', 'Letter', 0, '', 0, 0, 7, 0, 0, 0);
$checkRecords = $this->user_model->getCheckInfo($id);
foreach ($checkRecords as $key => $value) {
$data['info'] = $value;
$filename = $this->load->view(CHEQUE_VIEWS.'index',$data,TRUE);
$mpdf->WriteHTML($filename);
}
$mpdf->Output(); //output pdf document.
//$content = $mpdf->Output('', 'S'); //get pdf document content's as variable.
}
TreeMap
sorts by the key natural ordering. The keys should implement Comparable
or be compatible with a Comparator
(if you passed one instance to constructor). In you case, Float
already implements Comparable
so you don't have to do anything special.
You can call keySet
to retrieve all the keys in ascending order.
In 32 bit format system the hexadecimal value 0xff
represents 00000000000000000000000011111111
that is 255(15*16^1+15*16^0)
in decimal. and the bitwise & operator masks the same 8 right most bits as in first operand.
Lazy notes in comments.
#include <stdio.h>
// for malloc
#include <stdlib.h>
// you need the prototype
char *substring(int i,int j,char *ch);
int main(void /* std compliance */)
{
int i=0,j=2;
char s[]="String";
char *test;
// s points to the first char, S
// *s "is" the first char, S
test=substring(i,j,s); // so s only is ok
// if test == NULL, failed, give up
printf("%s",test);
free(test); // you should free it
return 0;
}
char *substring(int i,int j,char *ch)
{
int k=0;
// avoid calc same things several time
int n = j-i+1;
char *ch1;
// you can omit casting - and sizeof(char) := 1
ch1=malloc(n*sizeof(char));
// if (!ch1) error...; return NULL;
// any kind of check missing:
// are i, j ok?
// is n > 0... ch[i] is "inside" the string?...
while(k<n)
{
ch1[k]=ch[i];
i++;k++;
}
return ch1;
}
class App():
def __init__(self):
self.root = Tkinter.Tk()
button = Tkinter.Button(self.root, text = 'root quit', command=self.quit)
button.pack()
self.root.mainloop()
def quit(self):
self.root.destroy()
app = App()
To avoid SQL injection the insert statement with be
$type = 'testing';
$name = 'john';
$description = 'whatever';
$stmt = $con->prepare("INSERT INTO contents (type, reporter, description) VALUES (?, ?, ?)");
$stmt->bind_param("sss", $type , $name, $description);
$stmt->execute();
I think you can get this error if your database model is not correct and the underlying data contains a null which the model is attempting to map to a non-null object.
For example, some auto-generated models can attempt to map nvarchar(1) columns to char rather than string and hence if this column contains nulls it will throw an error when you attempt to access the data.
Note, LinqPad has a compatibility option if you want it to generate a model like that, but probably doesn't do this by default, which might explain it doesn't give you the error.
As simple as:
your_map.begin()->first // key
your_map.begin()->second // value
Check your heroku version. I just updated mine to 2.29.0, as follows:
heroku --version
#=> heroku-gem/2.29.0 (x86_64-linux) ruby/1.9.3
Now you can run:
heroku pg:reset DATABASE --confirm YOUR_APP_NAME
Then create your database and seed it in a single command:
heroku run rake db:setup
Now restart and try your app:
heroku restart
heroku open
pandas 0.21 introduces new functions for Parquet:
pd.read_parquet('example_pa.parquet', engine='pyarrow')
or
pd.read_parquet('example_fp.parquet', engine='fastparquet')
The above link explains:
These engines are very similar and should read/write nearly identical parquet format files. These libraries differ by having different underlying dependencies (fastparquet by using numba, while pyarrow uses a c-library).
var pause_menu = {
pause_button : { someProperty : "prop1", someOther : "prop2" },
resume_button : { resumeProp : "prop", resumeProp2 : false },
quit_button : false
};
then:
pause_menu.pause_button.someProperty //evaluates to "prop1"
etc etc.
With the multiplication, I recommend using the modulo operator (%) to determine which numbers divide evenly into the target number like:
$factors = array();
for($i = 0; $i < $target; $i++){
if($target % $i == 0){
$temp = array()
$a = $i;
$b = $target / $i;
$temp["a"] = $a;
$temp["b"] = $b;
$temp["index"] = $i;
array_push($factors, $temp);
}
}
This would leave you with an array of factors of the target number.
Because string
is defined in the namespace std
. Replace string
with std::string
, or add
using std::string;
below your include
lines.
It probably works in main.cpp
because some other header has this using
line in it (or something similar).
I resolved this kind of issue like this: I went into my XML layout file, cut the line of code that was generating the error. Then I saved the file, and pasted the code back in. The error was gone.
You can try
#include <iostream>
#include <conio.h>
int main() {
//some codes
getch();
return 0;
}
If you do not need to add a border on columns, you can also simply add a transparent border on them:
[class*="col-"] {
background-clip: padding-box;
border: 10px solid transparent;
}
[tested in XCode 7.2 and for iOS 9.2]
What suppressed the Storyboard errors and warnings for me was setting the intrinsic size of the scroll view and the content view (in my case, a stackview) to Placeholder. This setting is found in the Size inspector in Storyboard. And it says - Setting a design time intrinsic content size only affects a view while editing in Interface Builder. The view will not have this intrinsic content size at runtime.
So, I guess we aren't going wrong by setting this.
Note: In storyboard, I have pinned all the edges of scrollview to the superview and all the edges of stackview to the scrollview. In my code, I have set the translatesAutoresizingMaskIntoConstraints as false for both the scrollview and the stackview. And I have not mentioned a content size. When the stackview grows dynamically, the constraints set in storyboard ensure that the stack is scrollable.
The storyboard warning was driving me mad and I didn't want to centre things horizontally or vertically just to suppress the warning.
startup chrome with --disable-web-security
On Windows:
chrome.exe --disable-web-security
On Mac:
open /Applications/Google\ Chrome.app/ --args --disable-web-security
This will allow for cross-domain requests.
I'm not aware of if this also works for local files, but let us know !
And mention, this does exactly what you expect, it disables the web security, so be careful with it.
Java 8 solution for produce string like "key1: value1,key2: value2"
private static String hashMapToString(HashMap<String, String> hashMap) {
return hashMap.keySet().stream()
.map((key) -> key + ": " + hashMap.get(key))
.collect(Collectors.joining(","));
}
and produce a list simple collect as list
private static List<String> hashMapToList(HashMap<String, String> hashMap) {
return hashMap.keySet().stream()
.map((key) -> key + ": " + hashMap.get(key))
.collect(Collectors.toList());
}
For me, I used margin-left: auto; which is more responsive with horizontal resizing.
http://www.w3schools.com/tags/tag_ul.asp
ul {
display: block;
list-style-type: disc;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
}
The bind
method creates a new function from another function with one or more arguments bound to specific values, including the implicit this
argument.
This is an example of partial application. Normally we supply a function with all of its arguments which yields a value. This is known as function application. We are applying the function to its arguments.
Partial application is an example of a higher order function (HOF) because it yields a new function with a fewer number of argument.
You can use bind
to transform functions with multiple arguments into new functions.
function multiply(x, y) { _x000D_
return x * y; _x000D_
}_x000D_
_x000D_
let multiplyBy10 = multiply.bind(null, 10);_x000D_
console.log(multiplyBy10(5));
_x000D_
In the most common use case, when called with one argument the bind
method will create a new function that has the this
value bound to a specific value. In effect this transforms an instance method to a static method.
function Multiplier(factor) { _x000D_
this.factor = factor;_x000D_
}_x000D_
_x000D_
Multiplier.prototype.multiply = function(x) { _x000D_
return this.factor * x; _x000D_
}_x000D_
_x000D_
function ApplyFunction(func, value) {_x000D_
return func(value);_x000D_
}_x000D_
_x000D_
var mul = new Multiplier(5);_x000D_
_x000D_
// Produces garbage (NaN) because multiplying "undefined" by 10_x000D_
console.log(ApplyFunction(mul.multiply, 10));_x000D_
_x000D_
// Produces expected result: 50_x000D_
console.log(ApplyFunction(mul.multiply.bind(mul), 10));
_x000D_
The following example shows how using binding of this
can enable an object method to act as a callback that can easily update the state of an object.
function ButtonPressedLogger()_x000D_
{_x000D_
this.count = 0;_x000D_
this.onPressed = function() {_x000D_
this.count++;_x000D_
console.log("pressed a button " + this.count + " times");_x000D_
}_x000D_
for (let d of document.getElementsByTagName("button"))_x000D_
d.onclick = this.onPressed.bind(this);_x000D_
}_x000D_
_x000D_
new ButtonPressedLogger();
_x000D_
<button>press me</button>_x000D_
<button>no press me</button>
_x000D_
The directory name seems to be case sensitive. I faced the same issue but when I provided the directory name in upper case it worked.
Use the Bootstrap 4 h-100
class for height:100%;
<div class="container-fluid h-100">
<div class="row justify-content-center h-100">
<div class="col-4 hidden-md-down" id="yellow">
XXXX
</div>
<div class="col-10 col-sm-10 col-md-10 col-lg-8 col-xl-8">
Form Goes Here
</div>
</div>
</div>
https://www.codeply.com/go/zxd6oN1yWp
You'll also need ensure any parent(s) are also 100% height (or have a defined height)...
html,body {
height: 100%;
}
Note: 100% height is not the same as "remaining" height.
Related: Bootstrap 4: How to make the row stretch remaining height?
We can "cheat" via round with
$rounded = round($roundee / 10) * 10;
We can also avoid going through floating point division with
function roundToTen($roundee)
{
$r = $roundee % 10;
return ($r <= 5) : $roundee - $r : $roundee + (10 - $r);
}
Edit: I didn't know (and it's not well documented on the site) that round
now supports "negative" precision, so you can more easily use
$round = round($roundee, -1);
Edit again: If you always want to round up, you can try
function roundUpToTen($roundee)
{
$r = $roundee % 10;
if ($r == 0)
return $roundee;
return $roundee + 10 - $r;
}
Here are some demo & short cuts if you uses GitHub, the basic ideas are the same.
1. Open terminal like this
2. Paste the below command to terminal followed by a space and then paste the path of the .xcuserstate file simply like this
3. Make sure you have the correct git ignore and then commit the code :)
Check the documentation for the best result:
@forelse($status->replies as $reply)
<p>{{ $reply->body }}</p>
@empty
<p>No replies</p>
@endforelse
Because this post is the top one found on stackoverflow when searching for "ORA-00942: table or view does not exist insert", I want to mention another possible cause of this error (at least in Oracle 12c): a table uses a sequence to set a default value and the user executing the insert query does not have select privilege on the sequence. This was my problem and it took me an unnecessarily long time to figure it out.
To reproduce the problem, execute the following SQL as user1
:
create sequence seq_customer_id;
create table customer (
c_id number(10) default seq_customer_id.nextval primary key,
name varchar(100) not null,
surname varchar(100) not null
);
grant select, insert, update, delete on customer to user2;
Then, execute this insert statement as user2
:
insert into user1.customer (name,surname) values ('michael','jackson');
The result will be "ORA-00942: table or view does not exist" even though user2
does have insert and select privileges on user1.customer
table and is correctly prefixing the table with the schema owner name. To avoid the problem, you must grant select privilege on the sequence:
grant select on seq_customer_id to user2;
For reading date cells this method has proven to be robust so far:
private LocalDate readCellAsDate(final Row row, final int pos) {
if (pos == -1) {
return null;
}
final Cell cell = row.getCell(pos - 1);
if (cell != null) {
cell.setCellType(CellType.NUMERIC);
} else {
return null;
}
if (DateUtil.isCellDateFormatted(cell)) {
try {
return cell.getDateCellValue().toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
} catch (final NullPointerException e) {
logger.error(e.getMessage());
return null;
}
}
return null;
}
It's an extension for the User Controls you have in your project.
A user control is a kind of composite control that works much like an ASP.NET Web page—you can add existing Web server controls and markup to a user control, and define properties and methods for the control. You can then embed them in ASP.NET Web pages, where they act as a unit.
Simply, if you want to have some functionality that will be used on many pages in your project then you should create a User control or Composite control and use it in your pages. It just helps you to keep the same functionality and code in one place. And it makes it reusable.
Putting together several answers from above, this is what I ended up using:
var validationErrors = ModelState.Values.Where(E => E.Errors.Count > 0)
.SelectMany(E => E.Errors)
.Select(E => E.ErrorMessage)
.ToList();
validationErrors
ends up being a List<string>
that contains each error message. From there, it's easy to do what you want with that list.
According to https://developer.android.com/about/versions/android-4.2.html#NestedFragments, you can use nested fragments to achieve this by calling getChildFragmentManager() if you still want to use the Google Maps fragment instead of the view inside your own fragment:
SupportMapFragment mapFragment = new SupportMapFragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.add(R.id.content, mapFragment).commit();
where "content" is the root layout in your fragment (preferably a FrameLayout). The advantage of using a map fragment is that then the map lifecycle is managed automatically by the system.
Although the documentation says "You cannot inflate a layout into a fragment when that layout includes a <fragment>. Nested fragments are only supported when added to a fragment dynamically. ", I have somehow successfully done this and it worked fine. Here is my code:
In the fragment's onCreateView() method:
View view = inflater.inflate(R.layout.layout_maps, container, false);
SupportMapFragment mapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(...);
In the layout:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
Hope it helps!
I fixed the problem by adding activity block in the application tag. I created the project using wizard, I don't know why my AdroidManifest.xml file was not containing application block? I added the application block:
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".ToDoListActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
And I get the desired output on the emulator.
public class GoogleSearch {
public static void main(String[] args) {
WebDriver driver=new FirefoxDriver();
driver.get("http://www.google.com");
driver.findElement(By.xpath("//input[@type='text']")).sendKeys("Cheese");
driver.findElement(By.xpath("//button[@name='btnG']")).click();
driver.manage().timeouts().implicitlyWait(30,TimeUnit.SECONDS);
driver.findElement(By.xpath("(//h3[@class='r']/a)[3]")).click();
driver.manage().timeouts().implicitlyWait(30,TimeUnit.SECONDS);
}
}
I thought it could be worthwhile to have a micro-benchmark comparing the run-times of the different approaches mentioned here.
Disclaimer: I'm using simple_benchmark
(a library written by me) for the benchmarks and also include iteration_utilities.count_items
(a function in a third-party-library written by me).
To provide a more differentiated result I've done two benchmarks, one only including the approaches that don't build an intermediate container just to throw it away and one including these:
from simple_benchmark import BenchmarkBuilder
import more_itertools as mi
import iteration_utilities as iu
b1 = BenchmarkBuilder()
b2 = BenchmarkBuilder()
@b1.add_function()
@b2.add_function()
def summation(it):
return sum(1 for _ in it)
@b1.add_function()
def len_list(it):
return len(list(it))
@b1.add_function()
def len_listcomp(it):
return len([_ for _ in it])
@b1.add_function()
@b2.add_function()
def more_itertools_ilen(it):
return mi.ilen(it)
@b1.add_function()
@b2.add_function()
def iteration_utilities_count_items(it):
return iu.count_items(it)
@b1.add_arguments('length')
@b2.add_arguments('length')
def argument_provider():
for exp in range(2, 18):
size = 2**exp
yield size, [0]*size
r1 = b1.run()
r2 = b2.run()
import matplotlib.pyplot as plt
f, (ax1, ax2) = plt.subplots(2, 1, sharex=True, figsize=[15, 18])
r1.plot(ax=ax2)
r2.plot(ax=ax1)
plt.savefig('result.png')
The results were:
It uses log-log-axis so that all ranges (small values, large values) can be inspected. Since the plots are intended for qualitative comparison the actual values aren't too interesting. In general the y-axis (vertical) represents the time and the x-axis (horizontal) represents the number of elements in the input "iterable". Lower on the vertical axis means faster.
The upper plot shows the approaches where no intermediate list was used. Which shows that the iteration_utilities
approach was fastest, followed by more_itertools
and the slowest was using sum(1 for _ in iterator)
.
The lower plot also included the approaches that used len()
on an intermediate list, once with list
and once with a list comprehension. The approach with len(list)
was fastest here, but the difference to the iteration_utilities
approach is almost negligible. The approach using the comprehension was significantly slower than using list
directly.
Any approach mentioned here did show a dependency on the length of the input and iterated over ever element in the iterable. There is no way to get the length without the iteration (even if the iteration is hidden).
If you don't want third-party extensions then using len(list(iterable))
is definitely the fastest approach of the tested approaches, it however generates an intermediate list which could use significant more memory.
If you don't mind additional packages then iteration_utilities.count_items
would be almost as fast as the len(list(...))
function but doesn't require additional memory.
However it's important to note that the micro-benchmark used a list as input. The result of the benchmark could be different depending on the iterable you want to get the length of. I also tested with range
and a simple genertor-expression and the trends were very similar, however I cannot exclude that the timing won't change depending on the type of input.
I use dotLiquid for exactly this task.
It takes a template, and fills special identifiers with the content of an anonymous object.
//define template
String templateSource = "<h1>{{Heading}}</h1>Dear {{UserName}},<br/><p>First part of the email body goes here");
Template bodyTemplate = Template.Parse(templateSource); // Parses and compiles the template source
//Create DTO for the renderer
var bodyDto = new {
Heading = "Heading Here",
UserName = userName
};
String bodyText = bodyTemplate.Render(Hash.FromAnonymousObject(bodyDto));
It also works with collections, see some online examples.
public class joining {
public static void main(String[] args) {
int a=1;
int b=0;
int c=2;
int d=2;
int e=1;
String j = Long.toString(a);
String k = Long.toString(b);
String l = Long.toString(c);
String m = Long.toString(d);
String n = Long.toString(e);
/* String s1=Long.toString(a); // converting long to String
String s2=Long.toString(b);
String s3=s2+s1;
long c=Long.valueOf(s3).longValue(); // converting String to long
*/
System.out.println(j+k+l+m+n);
}
}
jQuery's id
selector only returns one result. The descendant
and multiple
selectors in the second and third statements are designed to select multiple elements. It's similar to:
Statement 1
var length = document.getElementById('a').length;
...Yields one result.
Statement 2
var length = 0;
for (i=0; i<document.body.childNodes.length; i++) {
if (document.body.childNodes.item(i).id == 'a') {
length++;
}
}
...Yields two results.
Statement 3
var length = document.getElementById('a').length + document.getElementsByTagName('div').length;
...Also yields two results.
You can use the following command:
zip -r nameoffile.zip directory
Hope this helps.
Try setting
npm config set strict-ssl false
and then try running,
npm install -g @angular/cli
You can always take the CTE, (Common Tabular Expression), approach.
;WITH updateCTE AS
(
SELECT ID, TITLE
FROM HOLD_TABLE
WHERE ID = 101
)
UPDATE updateCTE
SET TITLE = 'TEST';
This is what worked for me:
python -m site --user-site
ul li{
display: inline;
}
For more see the basic list options and a basic horizontal list at listamatic. (thanks to Daniel Straight below for the links).
Also, as pointed out in the comments, you probably want styling on the ul and whatever elements go inside the li's and the li's themselves to get things to look nice.
In the latest version of pandas (0.19.2
) you can directly pass the url
import pandas as pd
url="https://raw.githubusercontent.com/cs109/2014_data/master/countries.csv"
c=pd.read_csv(url)
You may want to have a look at https://isocpp.org/wiki/faq/pointers-to-members#fnptr-vs-memfnptr-types, especially [33.1] Is the type of "pointer-to-member-function" different from "pointer-to-function"?
Arrays.sort(arr);
int max=0,mode=0,count=0;
for(int i=0;i<N;i=i+count) {
count = 1;
for(int j=i+1; j<N; j++) {
if(arr[i] == arr[j])
count++;
}
if(count>max) {
max=count;
mode = arr[i];
}
}
If the culture of the result doesn't matters or we're only talking of integer values, CONVERT
or CAST
will be fine.
However, if the result must match a specific culture, FORMAT
might be the function to go:
DECLARE @value DECIMAL(19,4) = 1505.5698
SELECT CONVERT(NVARCHAR, @value) --> 1505.5698
SELECT FORMAT(@value, 'N2', 'en-us') --> 1,505.57
SELECT FORMAT(@value, 'N2', 'de-de') --> 1.505,57
For more information on FORMAT
see here.
Of course, formatting the result should be a matter of the UI layer of the software.
This depends. If you are concerned that your variable could end up as something that resolves to TRUE. Then hard checking is a must. Otherwise it is up to you. However, I doubt that the syntax whatever == TRUE
would ever confuse anyone who knew what they were doing.
Reportlab. There is an open source version, and a paid version which adds the Report Markup Language (an alternative method of defining your document).
Simply add height: 100%;
onto the #B2
styling. min-height
shouldn't be necessary.
we can use CDouble value which will be obtained by myString.doubleValue
"Best" can depend on many things, but here are few more short alternatives ordered from fast to slow:
string s = "z?a"l?g¨o?", pattern = @"(?s).(?<=(?:.(?=.*$(?<=((\P{M}\p{C}?\p{M}*)\1?))))*)";
string s1 = string.Concat(s.Reverse()); // "???o¨g?l"a?z"
string s2 = Microsoft.VisualBasic.Strings.StrReverse(s); // "o?g¨l?a"?z"
string s3 = string.Concat(StringInfo.ParseCombiningCharacters(s).Reverse()
.Select(i => StringInfo.GetNextTextElement(s, i))); // "o?g¨l?a"z?"
string s4 = Regex.Replace(s, pattern, "$2").Remove(s.Length); // "o?g¨l?a"z?"
To show vertical scroll bar in your div you need to add
height: 100px;
overflow-y : scroll;
or
height: 100px;
overflow-y : auto;
I'd probably use an ImageIcon and set it on a JLabel which I'd add to the JPanel.
Here's Sun's docs on the subject matter.
The best method to convert multiple images to PDF I have tried so far is to use PIL
purely. It's quite simple yet powerful:
from PIL import Image
im1 = Image.open("/Users/apple/Desktop/bbd.jpg")
im2 = Image.open("/Users/apple/Desktop/bbd1.jpg")
im3 = Image.open("/Users/apple/Desktop/bbd2.jpg")
im_list = [im2,im3]
pdf1_filename = "/Users/apple/Desktop/bbd1.pdf"
im1.save(pdf1_filename, "PDF" ,resolution=100.0, save_all=True, append_images=im_list)
Just set save_all
to True
and append_images
to the list of images which you want to add.
You might encounter the AttributeError: 'JpegImageFile' object has no attribute 'encoderinfo'
. The solution is here Error while saving multiple JPEGs as a multi-page PDF
Note:Install the newest PIL
to make sure save_all
argument is available for PDF.
You can use the function file_get_contents();
if(file_get_contents('https://example.com/example.txt')) {
//File exists
}
They are the same thing. .hide()
calls a jQuery function and allows you to add a callback function to it. So, with .hide()
you can add an animation for instance.
.css("display","none")
changes the attribute of the element to display:none
. It is the same as if you do the following in JavaScript:
document.getElementById('elementId').style.display = 'none';
The .hide()
function obviously takes more time to run as it checks for callback functions, speed, etc...
You can try below:
find ./ ! \( -path ./tmp -prune \) ! \( -path ./scripts -prune \) -type f -name '*_peaks.bed'
One way to do it without spilt the code into cases
with array:
def shift(arr, dx, default_value):
result = np.empty_like(arr)
get_neg_or_none = lambda s: s if s < 0 else None
get_pos_or_none = lambda s: s if s > 0 else None
result[get_neg_or_none(dx): get_pos_or_none(dx)] = default_value
result[get_pos_or_none(dx): get_neg_or_none(dx)] = arr[get_pos_or_none(-dx): get_neg_or_none(-dx)]
return result
with matrix it can be done like this:
def shift(image, dx, dy, default_value):
res = np.full_like(image, default_value)
get_neg_or_none = lambda s: s if s < 0 else None
get_pos_or_none = lambda s : s if s > 0 else None
res[get_pos_or_none(-dy): get_neg_or_none(-dy), get_pos_or_none(-dx): get_neg_or_none(-dx)] = \
image[get_pos_or_none(dy): get_neg_or_none(dy), get_pos_or_none(dx): get_neg_or_none(dx)]
return res
It's actually not too complicated...
Say you're on domain example.com
, and you want to make a request to domain example.net
. To do so, you need to cross domain boundaries, a no-no in most of browserland.
The one item that bypasses this limitation is <script>
tags. When you use a script tag, the domain limitation is ignored, but under normal circumstances, you can't really do anything with the results, the script just gets evaluated.
Enter JSONP
. When you make your request to a server that is JSONP enabled, you pass a special parameter that tells the server a little bit about your page. That way, the server is able to nicely wrap up its response in a way that your page can handle.
For example, say the server expects a parameter called callback
to enable its JSONP capabilities. Then your request would look like:
http://www.example.net/sample.aspx?callback=mycallback
Without JSONP, this might return some basic JavaScript object, like so:
{ foo: 'bar' }
However, with JSONP, when the server receives the "callback" parameter, it wraps up the result a little differently, returning something like this:
mycallback({ foo: 'bar' });
As you can see, it will now invoke the method you specified. So, in your page, you define the callback function:
mycallback = function(data){
alert(data.foo);
};
And now, when the script is loaded, it'll be evaluated, and your function will be executed. Voila, cross-domain requests!
It's also worth noting the one major issue with JSONP: you lose a lot of control of the request. For example, there is no "nice" way to get proper failure codes back. As a result, you end up using timers to monitor the request, etc, which is always a bit suspect. The proposition for JSONRequest is a great solution to allowing cross domain scripting, maintaining security, and allowing proper control of the request.
These days (2015), CORS is the recommended approach vs. JSONRequest. JSONP is still useful for older browser support, but given the security implications, unless you have no choice CORS is the better choice.
This worked for me.
application.properties
, used jdbc-url instead of url:
datasource.apidb.jdbc-url=jdbc:mysql://localhost:3306/apidb?useSSL=false
datasource.apidb.username=root
datasource.apidb.password=123
datasource.apidb.driver-class-name=com.mysql.jdbc.Driver
Configuration class:
@Configuration
@EnableJpaRepositories(
entityManagerFactoryRef = "fooEntityManagerFactory",
basePackages = {"com.buddhi.multidatasource.foo.repository"}
)
public class FooDataSourceConfig {
@Bean(name = "fooDataSource")
@ConfigurationProperties(prefix = "datasource.foo")
public HikariDataSource dataSource() {
return DataSourceBuilder.create().type(HikariDataSource.class).build();
}
@Bean(name = "fooEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean fooEntityManagerFactory(
EntityManagerFactoryBuilder builder,
@Qualifier("fooDataSource") DataSource dataSource
) {
return builder
.dataSource(dataSource)
.packages("com.buddhi.multidatasource.foo.model")
.persistenceUnit("fooDb")
.build();
}
}
export
in sh
and related shells (such as bash
), marks an environment variable to be exported to child-processes, so that the child inherits them.
The shell shall give the export attribute to the variables corresponding to the specified names, which shall cause them to be in the environment of subsequently executed commands. If the name of a variable is followed by = word, then the value of that variable shall be set to word.
I guess that what you want to do is an UNION
of both tables.
If both tables have the same columns then you can just do
SELECT category_id, col1, col2, col3
FROM items_a
UNION
SELECT category_id, col1, col2, col3
FROM items_b
Else, you might have to do something like
SELECT category_id, col1, col2, col3
FROM items_a
UNION
SELECT category_id, col_1 as col1, col_2 as col2, col_3 as col3
FROM items_b
Use json
. the ast
library consumes a lot of memory and and slower. I have a process that needs to read a text file of 156Mb. Ast
with 5 minutes delay for the conversion dictionary json
and 1 minutes using 60% less memory!
i have the same problem, but this piece of snippet alone solved my problem.
pip install psycopg2
Typographically, the correct glyph to use in sentence punctuation is the quote mark, both single (including for apostrophes) and double quotes. The straight-looking mark that we often see on the web is called a prime, which also comes in single and double varieties and has limited uses, mostly for measurements.
This article explains how to use them correctly.
Answer:
SELECT * FROM t1 FULL OUTER JOIN t2 ON t1.id = t2.id;
Can be recreated as follows:
SELECT t1.*, t2.*
FROM (SELECT * FROM t1 UNION SELECT name FROM t2) tmp
LEFT JOIN t1 ON t1.id = tmp.id
LEFT JOIN t2 ON t2.id = tmp.id;
Using a UNION or UNION ALL answer does not cover the edge case where the base tables have duplicated entries.
Explanation:
There is an edge case that a UNION or UNION ALL cannot cover. We cannot test this on mysql as it doesn't support FULL OUTER JOINs, but we can illustrate this on a database that does support it:
WITH cte_t1 AS
(
SELECT 1 AS id1
UNION ALL SELECT 2
UNION ALL SELECT 5
UNION ALL SELECT 6
UNION ALL SELECT 6
),
cte_t2 AS
(
SELECT 3 AS id2
UNION ALL SELECT 4
UNION ALL SELECT 5
UNION ALL SELECT 6
UNION ALL SELECT 6
)
SELECT * FROM cte_t1 t1 FULL OUTER JOIN cte_t2 t2 ON t1.id1 = t2.id2;
This gives us this answer:
id1 id2
1 NULL
2 NULL
NULL 3
NULL 4
5 5
6 6
6 6
6 6
6 6
The UNION solution:
SELECT * FROM cte_t1 t1 LEFT OUTER JOIN cte_t2 t2 ON t1.id1 = t2.id2
UNION
SELECT * FROM cte_t1 t1 RIGHT OUTER JOIN cte_t2 t2 ON t1.id1 = t2.id2
Gives an incorrect answer:
id1 id2
NULL 3
NULL 4
1 NULL
2 NULL
5 5
6 6
The UNION ALL solution:
SELECT * FROM cte_t1 t1 LEFT OUTER join cte_t2 t2 ON t1.id1 = t2.id2
UNION ALL
SELECT * FROM cte_t1 t1 RIGHT OUTER JOIN cte_t2 t2 ON t1.id1 = t2.id2
Is also incorrect.
id1 id2
1 NULL
2 NULL
5 5
6 6
6 6
6 6
6 6
NULL 3
NULL 4
5 5
6 6
6 6
6 6
6 6
Whereas this query:
SELECT t1.*, t2.*
FROM (SELECT * FROM t1 UNION SELECT name FROM t2) tmp
LEFT JOIN t1 ON t1.id = tmp.id
LEFT JOIN t2 ON t2.id = tmp.id;
Gives the following:
id1 id2
1 NULL
2 NULL
NULL 3
NULL 4
5 5
6 6
6 6
6 6
6 6
The order is different, but otherwise matches the correct answer.
important: in this kind of error you should look for simple mistakes in most cases
besides syntax error, I should say once I had same problem and it was because of bad name I have chosen for function. I have never searched for the reason but I remember that I copied another function and change it to use. I add "1" after the name to changed the function name and I got this error.
If you are running your application just on localhost and it is not yet live, I believe it is very difficult to send mail using this.
Once you put your application online, I believe that this problem should be automatically solved. But i think ini_set()
helps you to change the values in php.ini
during run time.
When I experienced this, I created a new project, and copied the files from my old project to my new one.
However, I still had the same problem: R does not exist
. Then I realised that I had copied and pasted Manifest from my notepad into Android Studio manifests and I hadn't changed the package name in the manifest file.
Therefore, once I changed the package name in the manifest to the new project name, the new project I'd created worked fine.
format: "YYYY"
Should be capital instead of "yyyy"
New execute_values
method in Psycopg 2.7:
data = [(1,'x'), (2,'y')]
insert_query = 'insert into t (a, b) values %s'
psycopg2.extras.execute_values (
cursor, insert_query, data, template=None, page_size=100
)
The pythonic way of doing it in Psycopg 2.6:
data = [(1,'x'), (2,'y')]
records_list_template = ','.join(['%s'] * len(data))
insert_query = 'insert into t (a, b) values {}'.format(records_list_template)
cursor.execute(insert_query, data)
Explanation: If the data to be inserted is given as a list of tuples like in
data = [(1,'x'), (2,'y')]
then it is already in the exact required format as
the values
syntax of the insert
clause expects a list of records as in
insert into t (a, b) values (1, 'x'),(2, 'y')
Psycopg
adapts a Python tuple
to a Postgresql record
.
The only necessary work is to provide a records list template to be filled by psycopg
# We use the data list to be sure of the template length
records_list_template = ','.join(['%s'] * len(data))
and place it in the insert
query
insert_query = 'insert into t (a, b) values {}'.format(records_list_template)
Printing the insert_query
outputs
insert into t (a, b) values %s,%s
Now to the usual Psycopg
arguments substitution
cursor.execute(insert_query, data)
Or just testing what will be sent to the server
print (cursor.mogrify(insert_query, data).decode('utf8'))
Output:
insert into t (a, b) values (1, 'x'),(2, 'y')
Maybe if your session path is not working properly you can try session.save_path(path/to/any folder);
function as alternative path. If it works you can ask your hosting provider about default path issue.
I'll third or fifth or whatever the recommendation for making your fraction immutable. I'd also recommend that you have it extend the Number class. I'd probably look at the Double class, since you're probably going to want to implement many of the same methods.
You should probably also implement Comparable and Serializable since this behavior will probably be expected. Thus, you will need to implement compareTo(). You will also need to override equals() and I cannot stress strongly enough that you also override hashCode(). This might be one of the few cases though where you don't want compareTo() and equals() to be consistent since fractions reducable to each other are not necessarily equal.
$('#multiselect1').on('change', function(){
var selected = $(this).find("option:selected");
var arrSelected = [];
// selected.each(function(){
// arrSelected.push($(this).val());
// });
// The problem with the above selected.each statement is that
// there is no iteration value.
// $(this).val() is all selected items, not an iterative item value.
// With each iteration the selected items will be appended to
// arrSelected like so
//
// arrSelected [0]['item0','item1','item2']
// arrSelected [1]['item0','item1','item2']
// You need to get the iteration value.
//
selected.each((idx, val) => {
arrSelected.push(val.value);
});
// arrSelected [0]['item0']
// arrSelected [1]['item1']
// arrSelected [2]['item2']
});
Create a file called config
inside ~/.ssh
. Inside the file you can add:
Host *
User buck
Or add
Host example
HostName example.net
User buck
The second example will set a username and is hostname specific, while the first example sets a username only. And when you use the second one you don't need to use ssh example.net
; ssh example
will be enough.
You can use Convert.ChangeType()
- It allows you to use runtime information on any IConvertible
type to change representation formats. Not all conversions are possible, though, and you may need to write special case logic if you want to support conversions from types that are not IConvertible
.
The corresponding code (without exception handling or special case logic) would be:
Ship ship = new Ship();
string value = "5.5";
PropertyInfo propertyInfo = ship.GetType().GetProperty("Latitude");
propertyInfo.SetValue(ship, Convert.ChangeType(value, propertyInfo.PropertyType), null);