adb reboot
should not reboot your linux box.
But in any case, you can redirect the command to a specific adb device using adb -s <device_id> command
, where
Device ID can be obtained from the command adb devices
command in this case is reboot
The blog article is mostly right, but not complete. To have a full understanding of what an odex file does, you have to understand a little about how application files (APK) work.
Applications are basically glorified ZIP archives. The java code is stored in a file called classes.dex and this file is parsed by the Dalvik JVM and a cache of the processed classes.dex file is stored in the phone's Dalvik cache.
An odex is basically a pre-processed version of an application's classes.dex that is execution-ready for Dalvik. When an application is odexed, the classes.dex is removed from the APK archive and it does not write anything to the Dalvik cache. An application that is not odexed ends up with 2 copies of the classes.dex file--the packaged one in the APK, and the processed one in the Dalvik cache. It also takes a little longer to launch the first time since Dalvik has to extract and process the classes.dex file.
If you are building a custom ROM, it's a really good idea to odex both your framework JAR files and the stock apps in order to maximize the internal storage space for user-installed apps. If you want to theme, then simply deodex -> apply your theme -> reodex -> release.
To actually deodex, use small and baksmali:
2020: The official AOSP code search https://cs.android.com/
You can view the source code through http://developer.android.com, when you're reading the API there will be a link to the matching source code on GitHub, you just need to add the Android SDK Reference Search Plugin on Chrome.
I blogged about it here:
http://blog.blundellapps.com/add-source-code-links-to-android-apis/
This is my implementation. It also prevents the programmer from creating a new instance:
let TEST = Test()
class Test {
private init() {
// This is a private (!) constructor
}
}
This was a problem for me for a long time. I had to come up with a solution that can be easily migrated once we get Elvis operator or something.
This is what I use; works for both arrays and objects
put this in tools.js file or something
// this will create the object/array if null
Object.prototype.__ = function (prop) {
if (this[prop] === undefined)
this[prop] = typeof prop == 'number' ? [] : {}
return this[prop]
};
// this will just check if object/array is null
Object.prototype._ = function (prop) {
return this[prop] === undefined ? {} : this[prop]
};
usage example:
let student = {
classes: [
'math',
'whatev'
],
scores: {
math: 9,
whatev: 20
},
loans: [
200,
{ 'hey': 'sup' },
500,
300,
8000,
3000000
]
}
// use one underscore to test
console.log(student._('classes')._(0)) // math
console.log(student._('classes')._(3)) // {}
console.log(student._('sports')._(3)._('injuries')) // {}
console.log(student._('scores')._('whatev')) // 20
console.log(student._('blabla')._('whatev')) // {}
console.log(student._('loans')._(2)) // 500
console.log(student._('loans')._(1)._('hey')) // sup
console.log(student._('loans')._(6)._('hey')) // {}
// use two underscores to create if null
student.__('loans').__(6)['test'] = 'whatev'
console.log(student.__('loans').__(6).__('test')) // whatev
well I know it makes the code a bit unreadable but it's a simple one liner solution and works great. I hope it helps someone :)
You just need to post the form data to the insert php file function, see below :)
class DbConnect
{
// Database login vars
private $dbHostname = '';
private $dbDatabase = '';
private $dbUsername = '';
private $dbPassword = '';
public $db = null;
public function connect()
{
try
{
$this->db = new PDO("mysql:host=".$this->dbHostname.";dbname=".$this->dbDatabase, $this->dbUsername, $this->dbPassword);
$this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch(PDOException $e)
{
echo "It seems there was an error. Please refresh your browser and try again. ".$e->getMessage();
}
}
public function store($email)
{
$stm = $this->db->prepare('INSERT INTO subscribers (email) VALUES ?');
$stm->bindValue(1, $email);
return $stm->execute();
}
}
According to the book PHP and MySQL for Dynamic Web Sites (4th edition)
Example:
$r = mysqli_query($dbc, $q);
For simple queries like INSERT, UPDATE, DELETE, etc. (which do not return records), the $r
variable—short for result—will be either TRUE or FALSE, depending upon whether the query executed successfully.
Keep in mind that “executed successfully” means that it ran without error; it doesn’t mean that the query’s execution necessarily had the desired result; you’ll need to test for that.
Then how to test?
While the mysqli_num_rows()
function will return the number of rows generated by a SELECT query, mysqli_affected_rows()
returns the number of rows affected by an INSERT, UPDATE, or DELETE query. It’s used like so:
$num = mysqli_affected_rows($dbc);
Unlike mysqli_num_rows()
, the one argument the function takes is the database connection ($dbc), not the results of the previous query ($r).
getDrawable()
is deprecated, so try this
imageView.setImageResource(R.drawable.fileName)
document.write
is a bad practice is that you cannot come up with a scenario where you cannot find a better alternative.The most simple way in my opinion would be to use the PyCharm IDE and install the 'multirun' plugin. I tried alot of the solutions here but this one worked for me in the end!
Also you can try this:
MultivaluedMap formData = new MultivaluedMapImpl();
formData.add("name1", "val1");
formData.add("name2", "val2");
webResource.path("yourJerseysPathPost").queryParams(formData).post();
Thanks for the great answers! Fastest way to get a few one-off files to Colab from Google drive: Load the Drive helper and mount
from google.colab import drive
This will prompt for authorization.
drive.mount('/content/drive')
Open the link in a new tab-> you will get a code - copy that back into the prompt you now have access to google drive check:
!ls "/content/drive/My Drive"
then copy file(s) as needed:
!cp "/content/drive/My Drive/xy.py" "xy.py"
confirm that files were copied:
!ls
Here's a complete working example using the SevenZip SDK in C#.
It will write, and read, standard 7zip files as created by the Windows 7zip application.
PS. The previous example was never going to decompress because it never wrote the required property information to the start of the file.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SevenZip.Compression.LZMA;
using System.IO;
using SevenZip;
namespace VHD_Director
{
class My7Zip
{
public static void CompressFileLZMA(string inFile, string outFile)
{
Int32 dictionary = 1 << 23;
Int32 posStateBits = 2;
Int32 litContextBits = 3; // for normal files
// UInt32 litContextBits = 0; // for 32-bit data
Int32 litPosBits = 0;
// UInt32 litPosBits = 2; // for 32-bit data
Int32 algorithm = 2;
Int32 numFastBytes = 128;
string mf = "bt4";
bool eos = true;
bool stdInMode = false;
CoderPropID[] propIDs = {
CoderPropID.DictionarySize,
CoderPropID.PosStateBits,
CoderPropID.LitContextBits,
CoderPropID.LitPosBits,
CoderPropID.Algorithm,
CoderPropID.NumFastBytes,
CoderPropID.MatchFinder,
CoderPropID.EndMarker
};
object[] properties = {
(Int32)(dictionary),
(Int32)(posStateBits),
(Int32)(litContextBits),
(Int32)(litPosBits),
(Int32)(algorithm),
(Int32)(numFastBytes),
mf,
eos
};
using (FileStream inStream = new FileStream(inFile, FileMode.Open))
{
using (FileStream outStream = new FileStream(outFile, FileMode.Create))
{
SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();
encoder.SetCoderProperties(propIDs, properties);
encoder.WriteCoderProperties(outStream);
Int64 fileSize;
if (eos || stdInMode)
fileSize = -1;
else
fileSize = inStream.Length;
for (int i = 0; i < 8; i++)
outStream.WriteByte((Byte)(fileSize >> (8 * i)));
encoder.Code(inStream, outStream, -1, -1, null);
}
}
}
public static void DecompressFileLZMA(string inFile, string outFile)
{
using (FileStream input = new FileStream(inFile, FileMode.Open))
{
using (FileStream output = new FileStream(outFile, FileMode.Create))
{
SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
byte[] properties = new byte[5];
if (input.Read(properties, 0, 5) != 5)
throw (new Exception("input .lzma is too short"));
decoder.SetDecoderProperties(properties);
long outSize = 0;
for (int i = 0; i < 8; i++)
{
int v = input.ReadByte();
if (v < 0)
throw (new Exception("Can't Read 1"));
outSize |= ((long)(byte)v) << (8 * i);
}
long compressedSize = input.Length - input.Position;
decoder.Code(input, output, compressedSize, outSize, null);
}
}
}
public static void Test()
{
CompressFileLZMA("DiscUtils.pdb", "DiscUtils.pdb.7z");
DecompressFileLZMA("DiscUtils.pdb.7z", "DiscUtils.pdb2");
}
}
}
Use this in configuration section of your web.config file:
<location path="images">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
<location path="css">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
<location path="js">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
Two of the most common
First way :
let jsonData = require('./JsonFile.json')
let jsonData = require('./JsonFile')
// if we omitting .json also works
OR
import jsonData from ('./JsonFile.json')
Second way :
1) synchronously
const fs = require('fs')
let jsonData = JSON.parse(fs.readFileSync('JsonFile.json', 'utf-8'))
2) asynchronously
const fs = require('fs')
let jsonData = {}
fs.readFile('JsonFile.json', 'utf-8', (err, data) => {
if (err) throw err
jsonData = JSON.parse(data)
})
Note: 1) if we JsonFile.json is changed, we not get the new data, even if we re run require('./JsonFile.json')
2) The fs.readFile or fs.readFileSync will always re read the file, and get changes
In VS2010, right click the project in the Solution Explorer and select 'Add Deployable Dependencies'. Then check the MVC related check boxes in the following dialog.
This creates a '_bin_deployableAssemblies' folder in the project which contains all the .dll files mentioned in other answers. I believe these get copied to the bin folder when creating a deployment package.
My case was to print horizontal (landscape) summary section - so:
}).then((canvas) => {
const img = canvas.toDataURL('image/jpg');
new jsPDF({
orientation: 'l', // landscape
unit: 'pt', // points, pixels won't work properly
format: [canvas.width, canvas.height] // set needed dimensions for any element
});
pdf.addImage(img, 'JPEG', 0, 0, canvas.width, canvas.height);
pdf.save('your-filename.pdf');
});
Use the (excellent) JSON-Java library from json.org then
JSONObject json = new JSONObject(str);
String xml = XML.toString(json);
toString
can take a second argument to provide the name of the XML root node.
This library is also able to convert XML to JSON using XML.toJSONObject(java.lang.String string)
Check the Javadoc
Link to the the github repository
POM
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20160212</version>
</dependency>
original post updated with new links
I had quite a number of these exceptions thrown, the fastest and easiest way I found to solve them was to find unique values in the exceptions which I then searched for in the storyboard source code. This helped me to find the actual view(s) and constraint(s) causing the problem (I use meaningful userLabels on all of the views, which makes it a lot easier to track the constraints and views)...
So, using the above exceptions I would open the storyboard as "source code" in xcode (or another editor) and look for something I can find...
<NSLayoutConstraint:0x72bf860 V:[UILabel:0x72bf7c0(17)]>
.. this looks like a vertical (V) constraint on a UILabel with a value of (17).
Looking through the exceptions I also find
<NSLayoutConstraint:0x72c22b0 V:[UILabel:0x72bf7c0]-(NSSpace(8))-[UIButton:0x886efe0]>
Which looks like the UILabel(0x72bf7c0) is close to a UIButton(0x886efe0) with some vertical spacing (8)..
That will hopefully be enough for me to find the specific views in the storyboard source code (probably by searching the text for "17" initially), or at least a few likely candidates. From there I should be able to actually figure out which views these are in the storyboard which will make it a lot easier to identify the problem (look for "duplicated" pinning or pinning that conflicts with size constraints).
Below is the pseudo-code for using sub-query using Criteria API.
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<Object> criteriaQuery = criteriaBuilder.createQuery();
Root<EMPLOYEE> from = criteriaQuery.from(EMPLOYEE.class);
Path<Object> path = from.get("compare_field"); // field to map with sub-query
from.fetch("name");
from.fetch("id");
CriteriaQuery<Object> select = criteriaQuery.select(from);
Subquery<PROJECT> subquery = criteriaQuery.subquery(PROJECT.class);
Root fromProject = subquery.from(PROJECT.class);
subquery.select(fromProject.get("requiredColumnName")); // field to map with main-query
subquery.where(criteriaBuilder.and(criteriaBuilder.equal("name",name_value),criteriaBuilder.equal("id",id_value)));
select.where(criteriaBuilder.in(path).value(subquery));
TypedQuery<Object> typedQuery = entityManager.createQuery(select);
List<Object> resultList = typedQuery.getResultList();
Also it definitely needs some modification as I have tried to map it according to your query. Here is a link http://www.ibm.com/developerworks/java/library/j-typesafejpa/ which explains concept nicely.
I struggled with this because I'm developing a library, and every now and then want to run it as an application.
From app/build.gradle, check that you have apply plugin: 'com.android.application'
instead of apply plugin: 'com.android.library'
.
You should also have this in app/build.gradle:
defaultConfig {
applicationId "com.your_company.your_application"
...
}
Finally run Gradle sync.
The Content-Security-Policy
meta-tag allows you to reduce the risk of XSS attacks by allowing you to define where resources can be loaded from, preventing browsers from loading data from any other locations. This makes it harder for an attacker to inject malicious code into your site.
I banged my head against a brick wall trying to figure out why I was getting CSP errors one after another, and there didn't seem to be any concise, clear instructions on just how does it work. So here's my attempt at explaining some points of CSP briefly, mostly concentrating on the things I found hard to solve.
For brevity I won’t write the full tag in each sample. Instead I'll only show the content
property, so a sample that says content="default-src 'self'"
means this:
<meta http-equiv="Content-Security-Policy" content="default-src 'self'">
1. How can I allow multiple sources?
You can simply list your sources after a directive as a space-separated list:
content="default-src 'self' https://example.com/js/"
Note that there are no quotes around parameters other than the special ones, like 'self'
. Also, there's no colon (:
) after the directive. Just the directive, then a space-separated list of parameters.
Everything below the specified parameters is implicitly allowed. That means that in the example above these would be valid sources:
https://example.com/js/file.js
https://example.com/js/subdir/anotherfile.js
These, however, would not be valid:
http://example.com/js/file.js
^^^^ wrong protocol
https://example.com/file.js
^^ above the specified path
2. How can I use different directives? What do they each do?
The most common directives are:
default-src
the default policy for loading javascript, images, CSS, fonts, AJAX requests, etcscript-src
defines valid sources for javascript filesstyle-src
defines valid sources for css filesimg-src
defines valid sources for imagesconnect-src
defines valid targets for to XMLHttpRequest (AJAX), WebSockets or EventSource. If a connection attempt is made to a host that's not allowed here, the browser will emulate a 400
errorThere are others, but these are the ones you're most likely to need.
3. How can I use multiple directives?
You define all your directives inside one meta-tag by terminating them with a semicolon (;
):
content="default-src 'self' https://example.com/js/; style-src 'self'"
4. How can I handle ports?
Everything but the default ports needs to be allowed explicitly by adding the port number or an asterisk after the allowed domain:
content="default-src 'self' https://ajax.googleapis.com http://example.com:123/free/stuff/"
The above would result in:
https://ajax.googleapis.com:123
^^^^ Not ok, wrong port
https://ajax.googleapis.com - OK
http://example.com/free/stuff/file.js
^^ Not ok, only the port 123 is allowed
http://example.com:123/free/stuff/file.js - OK
As I mentioned, you can also use an asterisk to explicitly allow all ports:
content="default-src example.com:*"
5. How can I handle different protocols?
By default, only standard protocols are allowed. For example to allow WebSockets ws://
you will have to allow it explicitly:
content="default-src 'self'; connect-src ws:; style-src 'self'"
^^^ web Sockets are now allowed on all domains and ports.
6. How can I allow the file protocol file://
?
If you'll try to define it as such it won’t work. Instead, you'll allow it with the filesystem
parameter:
content="default-src filesystem"
7. How can I use inline scripts and style definitions?
Unless explicitly allowed, you can't use inline style definitions, code inside <script>
tags or in tag properties like onclick
. You allow them like so:
content="script-src 'unsafe-inline'; style-src 'unsafe-inline'"
You'll also have to explicitly allow inline, base64 encoded images:
content="img-src data:"
8. How can I allow eval()
?
I'm sure many people would say that you don't, since 'eval is evil' and the most likely cause for the impending end of the world. Those people would be wrong. Sure, you can definitely punch major holes into your site's security with eval, but it has perfectly valid use cases. You just have to be smart about using it. You allow it like so:
content="script-src 'unsafe-eval'"
9. What exactly does 'self'
mean?
You might take 'self'
to mean localhost, local filesystem, or anything on the same host. It doesn't mean any of those. It means sources that have the same scheme (protocol), same host, and same port as the file the content policy is defined in. Serving your site over HTTP? No https for you then, unless you define it explicitly.
I've used 'self'
in most examples as it usually makes sense to include it, but it's by no means mandatory. Leave it out if you don't need it.
But hang on a minute! Can't I just use content="default-src *"
and be done with it?
No. In addition to the obvious security vulnerabilities, this also won’t work as you'd expect. Even though some docs claim it allows anything, that's not true. It doesn't allow inlining or evals, so to really, really make your site extra vulnerable, you would use this:
content="default-src * 'unsafe-inline' 'unsafe-eval'"
... but I trust you won’t.
Further reading:
You only need <script></script>
Tag that's it. <script type="text/javascript"></script>
is not a valid HTML tag, so for best SEO practice use <script></script>
This page writes well about the protected & default access modifier
.... Protected: Protected access modifier is the a little tricky and you can say is a superset of the default access modifier. Protected members are same as the default members as far as the access in the same package is concerned. The difference is that, the protected members are also accessible to the subclasses of the class in which the member is declared which are outside the package in which the parent class is present.
But these protected members are “accessible outside the package only through inheritance“. i.e you can access a protected member of a class in its subclass present in some other package directly as if the member is present in the subclass itself. But that protected member will not be accessible in the subclass outside the package by using parent class’s reference. ....
try this
<script type="text/javascript">
window.onload = function(){
var auto_refresh = setInterval(
function ()
{
$('.View').html('');
$('.View').load('Small.php').fadeIn("slow");
}, 15000); // refresh every 15000 milliseconds
}
</script>
Suppose we have a file as Message.cpp or a .c file
Steps 1: Preprocessing (Argument -E )
g++ -E .\Message.cpp > P1
P1 file generated has expanded macros and header file contents and comments are stripped off.
Step 2: Translate Preprocessed file to assembly (Argument -S). This task is done by compiler
g++ -S .\Message.cpp
An assembler (ASM) is generated (Message.s). It has all the assembly code.
Step 3: Translate assembly code to Object code. Note: Message.s was generated in Step2. g++ -c .\Message.s
An Object file with the name Message.o is generated. It is the binary form.
Step 4: Linking the object file. This task is done by linker
g++ .\Message.o -o MessageApp
An exe file MessageApp.exe is generated here.
#include <iostream>
using namespace std;
//This a sample program
int main()
{
cout << "Hello" << endl;
cout << PQR(P,K) ;
getchar();
return 0;
}
This is an old question but encountered it myself.
I have semi-solutions that work situational for the former question("Children visible in overflow:hidden parent")
If the parent div does not need to be position:relative, simply set the children styles to visibility:visible.
If the parent div does need to be position:relative, the only way possible I found to show the children was position:fixed. This worked for me in my situation luckily enough but I would imagine it wouldn't work in others.
Here is a crappy example just post into a html file to view.
<div style="background: #ff00ff; overflow: hidden; width: 500px; height: 500px; position: relative;">
<div style="background: #ff0000;position: fixed; top: 10px; left: 10px;">asd
<div style="background: #00ffff; width: 200px; overflow: visible; position: absolute; visibility: visible; clear:both; height: 1000px; top: 100px; left: 10px;"> a</div>
</div>
</div>
# this is kind of timer, stop after the input minute run out.
import time
min=int(input('>>'))
while min>0:
print min
time.sleep(60) # every minute
min-=1 # take one minute
I have my sample code working but want to make it somewhat more better refrencing the tab from list:
Public Class Form1
Dim State1 As Integer = 1
Dim AllTabs As List(Of TabPage) = New List(Of TabPage)
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Check1(State1)
State1 = CInt(IIf(State1 = 1, 0, 1))
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
AllTabs.Add(TabControl1.TabPages("TabPage1"))
AllTabs.Add(TabControl1.TabPages("TabPage2"))
End Sub
Sub Check1(ByVal No As Integer)
If TabControl1.TabPages.ContainsKey("TabPage1") Then
TabControl1.TabPages.Remove(TabControl1.TabPages("TabPage1"))
End If
If TabControl1.TabPages.ContainsKey("TabPage2") Then
TabControl1.TabPages.Remove(TabControl1.TabPages("TabPage2"))
End If
TabControl1.TabPages.Add(AllTabs(No))
End Sub
End Class
There might be just a typo anywhere inside a file imported by the config. For example, I made a typo deep inside my config file:
loccation /sense/movies/ {
mp4;
}
(loccation instead of location), and this causes the error:
nginx: [emerg] "server" directive is not allowed here in /etc/nginx/sites-enabled/xxx.xx:1
Using bootstrap multi select
Ajax
function() { $.ajax({
type : "get",
url : "OperatorController",
data : "input=" + $('#province').val(),
success : function(msg) {
var arrayOfObjects = eval(msg);
$("#operators").multiselect('dataprovider',
arrayOfObjects);
// $('#output').append(obj);
},
dataType : 'text'
});}
}
In Servlet
request.getParameter("input")
I faced the same problem , As I'm trying to work on angular project in VS code.
The solution for which this issue resolved is .
2.run the following command in terminal
npm install
Then Run npm audit fix
Then Run npm audit fix --force
now the issue will be resolved.
After failing with the above proven steps, I tried something after deciding to re-install.
Added : %\USER PATH\Java\jdk1.6.0_39\bin to Environment Variables
Deleted: eclipse configuration file
Re-run : eclipsec.exe
Now everything from projects is back working.
In current AVD manager you can't. You just have the opportunity to use ARM images which will not need hardware virtualization.
To run ARM images:
Although this is the available solution but still a slow one !!
I agree with the use of instanceof
already mentioned.
An additional benefit of using instanceof
is that when used with a null
reference instanceof
of will return false
, while a.getClass()
would throw a NullPointerException
.
You can't float or set the width of an inline element. Remove display: inline;
from both classes and your markup should present fine.
EDIT: You can set the width, but it will cause the element to be rendered as a block.
Set Color on Text by passing String and color:
private String getColoredSpanned(String text, String color) {
String input = "<font color=" + color + ">" + text + "</font>";
return input;
}
Set text on TextView / Button / EditText etc by calling below code:
TextView:
TextView txtView = (TextView)findViewById(R.id.txtView);
Get Colored String:
String name = getColoredSpanned("Hiren", "#800000");
Set Text on TextView:
txtView.setText(Html.fromHtml(name));
Done
it does not work for me:
$('#Attachment').replaceWith($(this).clone());
or
$('#Attachment').replaceWith($('#Attachment').clone());
so in asp mvc I use razor features for replacing file input. at first create a variable for input string with Id and Name and then use it for showing in page and replacing on reset button click:
@{
var attachmentInput = Html.TextBoxFor(c => c.Attachment, new { type = "file" });
}
@attachmentInput
<button type="button" onclick="$('#@(Html.IdFor(p => p.Attachment))').replaceWith('@(attachmentInput)');">--</button>
You can use a sort function :
var myarray=[25, 8, 7, 41]
myarray.sort( function(a,b) { return b - a; } );
// 7 8 25 41
Look at http://www.javascriptkit.com/javatutors/arraysort.shtml
Give this code a try:
ImageView lineColorCode = (ImageView)convertView.findViewById(R.id.line_color_code);
int color = Color.parseColor("#AE6118"); //The color u want
lineColorCode.setColorFilter(color);
The best solution for your problem is to utilize a Pool
. Using Queue
s and having a separate "queue feeding" functionality is probably overkill.
Here's a slightly rearranged version of your program, this time with only 2 processes coralled in a Pool
. I believe it's the easiest way to go, with minimal changes to original code:
import multiprocessing
import time
data = (
['a', '2'], ['b', '4'], ['c', '6'], ['d', '8'],
['e', '1'], ['f', '3'], ['g', '5'], ['h', '7']
)
def mp_worker((inputs, the_time)):
print " Processs %s\tWaiting %s seconds" % (inputs, the_time)
time.sleep(int(the_time))
print " Process %s\tDONE" % inputs
def mp_handler():
p = multiprocessing.Pool(2)
p.map(mp_worker, data)
if __name__ == '__main__':
mp_handler()
Note that mp_worker()
function now accepts a single argument (a tuple of the two previous arguments) because the map()
function chunks up your input data into sublists, each sublist given as a single argument to your worker function.
Output:
Processs a Waiting 2 seconds
Processs b Waiting 4 seconds
Process a DONE
Processs c Waiting 6 seconds
Process b DONE
Processs d Waiting 8 seconds
Process c DONE
Processs e Waiting 1 seconds
Process e DONE
Processs f Waiting 3 seconds
Process d DONE
Processs g Waiting 5 seconds
Process f DONE
Processs h Waiting 7 seconds
Process g DONE
Process h DONE
Edit as per @Thales comment below:
If you want "a lock for each pool limit" so that your processes run in tandem pairs, ala:
A waiting B waiting | A done , B done | C waiting , D waiting | C done, D done | ...
then change the handler function to launch pools (of 2 processes) for each pair of data:
def mp_handler():
subdata = zip(data[0::2], data[1::2])
for task1, task2 in subdata:
p = multiprocessing.Pool(2)
p.map(mp_worker, (task1, task2))
Now your output is:
Processs a Waiting 2 seconds
Processs b Waiting 4 seconds
Process a DONE
Process b DONE
Processs c Waiting 6 seconds
Processs d Waiting 8 seconds
Process c DONE
Process d DONE
Processs e Waiting 1 seconds
Processs f Waiting 3 seconds
Process e DONE
Process f DONE
Processs g Waiting 5 seconds
Processs h Waiting 7 seconds
Process g DONE
Process h DONE
Well if you are doing this in Asp.Net or have access to HttpContext.Current.Request I'd say these are easier and more general ways of getting them:
var scheme = Request.Url.Scheme; // will get http, https, etc.
var host = Request.Url.Host; // will get www.mywebsite.com
var port = Request.Url.Port; // will get the port
var path = Request.Url.AbsolutePath; // should get the /pages/page1.aspx part, can't remember if it only get pages/page1.aspx
I hope this helps. :)
$id = $this->db->insert_id();
I will explain bind theoretically as well as practically
bind in javascript is a method -- Function.prototype.bind . bind is a method. It is called on function prototype. This method creates a function whose body is similar to the function on which it is called but the 'this' refers to the first parameter passed to the bind method. Its syntax is
var bindedFunc = Func.bind(thisObj,optionsArg1,optionalArg2,optionalArg3,...);
Example:--
var checkRange = function(value){
if(typeof value !== "number"){
return false;
}
else {
return value >= this.minimum && value <= this.maximum;
}
}
var range = {minimum:10,maximum:20};
var boundedFunc = checkRange.bind(range); //bounded Function. this refers to range
var result = boundedFunc(15); //passing value
console.log(result) // will give true;
So do you want them to get the IE password-challenge box, or should they be directed to your login page and enter their information there? If it's the second option, then you should at least enable Anonymous access to your login page, since the site won't know who they are yet.
If you want the first option, then the login page they're getting forwarded to will need to read the currently logged-in user and act based on that, since they would have had to correctly authenticate to get this far.
You may take a look at this Java based framework for remote command execution, incl. via SSH: https://github.com/jkovacic/remote-exec It relies on two opensource SSH libraries, either JSch (for this implementation even an ECDSA authentication is supported) or Ganymed (one of these two libraries will be enough). At the first glance it might look a bit complex, you'll have to prepare plenty of SSH related classes (providing server and your user details, specifying encryption details, provide OpenSSH compatible private keys, etc., but the SSH itself is quite complex too). On the other hand, the modular design allows for simple inclusion of more SSH libraries, easy implementation of other command's output processing or even interactive classes etc.
In the rowdatabound
method for 2nd column
GridView gv = (sender as GridView);
gv.HeaderRow.Cells[2].Visible = false;
e.Row.Cells[2].Visible = false;
The answer with screenshots (put the checkbox as in the second pic, then press OK):
A nested dict is a dictionary within a dictionary. A very simple thing.
>>> d = {}
>>> d['dict1'] = {}
>>> d['dict1']['innerkey'] = 'value'
>>> d
{'dict1': {'innerkey': 'value'}}
You can also use a defaultdict
from the collections
package to facilitate creating nested dictionaries.
>>> import collections
>>> d = collections.defaultdict(dict)
>>> d['dict1']['innerkey'] = 'value'
>>> d # currently a defaultdict type
defaultdict(<type 'dict'>, {'dict1': {'innerkey': 'value'}})
>>> dict(d) # but is exactly like a normal dictionary.
{'dict1': {'innerkey': 'value'}}
You can populate that however you want.
I would recommend in your code something like the following:
d = {} # can use defaultdict(dict) instead
for row in file_map:
# derive row key from something
# when using defaultdict, we can skip the next step creating a dictionary on row_key
d[row_key] = {}
for idx, col in enumerate(row):
d[row_key][idx] = col
According to your comment:
may be above code is confusing the question. My problem in nutshell: I have 2 files a.csv b.csv, a.csv has 4 columns i j k l, b.csv also has these columns. i is kind of key columns for these csvs'. j k l column is empty in a.csv but populated in b.csv. I want to map values of j k l columns using 'i` as key column from b.csv to a.csv file
My suggestion would be something like this (without using defaultdict):
a_file = "path/to/a.csv"
b_file = "path/to/b.csv"
# read from file a.csv
with open(a_file) as f:
# skip headers
f.next()
# get first colum as keys
keys = (line.split(',')[0] for line in f)
# create empty dictionary:
d = {}
# read from file b.csv
with open(b_file) as f:
# gather headers except first key header
headers = f.next().split(',')[1:]
# iterate lines
for line in f:
# gather the colums
cols = line.strip().split(',')
# check to make sure this key should be mapped.
if cols[0] not in keys:
continue
# add key to dict
d[cols[0]] = dict(
# inner keys are the header names, values are columns
(headers[idx], v) for idx, v in enumerate(cols[1:]))
Please note though, that for parsing csv files there is a csv module.
delimiter //
CREATE procedure yourdatabase.while_example()
wholeblock:BEGIN
declare str VARCHAR(255) default '';
declare x INT default 0;
SET x = 1;
WHILE x <= 5 DO
SET str = CONCAT(str,x,',');
SET x = x + 1;
END WHILE;
select str;
END//
Which prints:
mysql> call while_example();
+------------+
| str |
+------------+
| 1,2,3,4,5, |
+------------+
delimiter //
CREATE procedure yourdb.repeat_loop_example()
wholeblock:BEGIN
DECLARE x INT;
DECLARE str VARCHAR(255);
SET x = 5;
SET str = '';
REPEAT
SET str = CONCAT(str,x,',');
SET x = x - 1;
UNTIL x <= 0
END REPEAT;
SELECT str;
END//
Which prints:
mysql> call repeat_loop_example();
+------------+
| str |
+------------+
| 5,4,3,2,1, |
+------------+
delimiter //
CREATE procedure yourdatabase.for_loop_example()
wholeblock:BEGIN
DECLARE x INT;
DECLARE str VARCHAR(255);
SET x = -5;
SET str = '';
loop_label: LOOP
IF x > 0 THEN
LEAVE loop_label;
END IF;
SET str = CONCAT(str,x,',');
SET x = x + 1;
ITERATE loop_label;
END LOOP;
SELECT str;
END//
Which prints:
mysql> call for_loop_example();
+-------------------+
| str |
+-------------------+
| -5,-4,-3,-2,-1,0, |
+-------------------+
1 row in set (0.00 sec)
Do the tutorial: http://www.mysqltutorial.org/stored-procedures-loop.aspx
If I catch you pushing this kind of MySQL for-loop constructs into production, I'm going to shoot you with the foam missile launcher. You can use a pipe wrench to bang in a nail, but doing so makes you look silly.
The actual standard key-layout is found in /system/usr/keylayout/qwerty.kl
within the Android running on the handset. And it is a generic keylayout also.
key 115 VOLUME_UP WAKE
key 114 VOLUME_DOWN WAKE
From the AOSP source it can be found in sdk/emulator/keymaps/qwerty.kl
.
But bear in mind this, when the source gets compiled along with a device specific keylayout, that will override the standard layout instead so the mileage will vary depending on what the manufacturer has programmed into the keycode for the volume up/down buttons in your case!
You can use pandas dataframes or series as Julien said but if you want to restrict your-self to numpy you can pass an additional array of indices:
from sklearn.model_selection import train_test_split
import numpy as np
n_samples, n_features, n_classes = 10, 2, 2
data = np.random.randn(n_samples, n_features) # 10 training examples
labels = np.random.randint(n_classes, size=n_samples) # 10 labels
indices = np.arange(n_samples)
x1, x2, y1, y2, idx1, idx2 = train_test_split(
data, labels, indices, test_size=0.2)
$(function(){
$(document).find('div').siblings().each(function(){
var obj = $(this);
obj.find('div').each(function(){
var obj1 = $(this);
if(!obj1.children().length > 0){
alert(obj1.html());
}
});
});
});
<div id="2">
<div>
<div>
<div>XYZ Pvt. Ltd.</div>
</div>
</div>
</div>
<div id="3">
<div>
<div>
<div>ABC Pvt Ltd.</div>
</div>
</div>
</div>
http://msdn.microsoft.com/en-us/library/system.io.directory.getfiles.aspx
The System.IO namespace has loads of methods to help you with file operations. The
Directory.GetFiles()
method returns an array of strings which represent the files in the target directory.
It was two things:
I added the volume in docker-compose.yml
:
node:
volumes:
- ./node:/app
I moved the npm install && nodemon app.js
pieces into a CMD
because RUN
adds things to the Union File System, and my volume isn't part of UFS.
# Set the base image to Ubuntu
FROM node:boron
# File Author / Maintainer
MAINTAINER Amin Shah Gilani <[email protected]>
# Install nodemon
RUN npm install -g nodemon
# Add a /app volume
VOLUME ["/app"]
# Define working directory
WORKDIR /app
# Expose port
EXPOSE 8080
# Run npm install
CMD npm install && nodemon app.js
Can't you just use Select?
Use select on a connected socket. If the select returns with your socket as Ready but the subsequent Receive returns 0 bytes that means the client disconnected the connection. AFAIK, that is the fastest way to determine if the client disconnected.
I do not know C# so just ignore if my solution does not fit in C# (C# does provide select though) or if I had misunderstood the context.
<option value="" selected disabled hidden>Default Text</option>
Leaving the disabled flag in prevents them from not selecting an option and the hidden flag will remove it from the list. In my case I was using it with an enum list as well and the concept holds the same
<select asp-for="Property" asp-items="Html.GetEnumSelectList<PropertyEnum>()">
<option value="" selected disabled hidden>Select Property Enum</option>
<option value=""></option>
</select>
Go to conversation tab then come down there is one "close pull request" button is there use that button to close pull request, Take ref of attached image
You can use instanceof
.
instanceof
RelationalExpression: RelationalExpression instanceof ReferenceType
At run time, the result of the
instanceof
operator istrue
if the value of the RelationalExpression is notnull
and the reference could be cast to the ReferenceType without raising aClassCastException
. Otherwise the result isfalse
.
That means you can do something like this:
Object o = new int[] { 1,2 };
System.out.println(o instanceof int[]); // prints "true"
You'd have to check if the object is an instanceof boolean[]
, byte[]
, short[]
, char[]
, int[]
, long[]
, float[]
, double[]
, or Object[]
, if you want to detect all array types.
Also, an int[][]
is an instanceof Object[]
, so depending on how you want to handle nested arrays, it can get complicated.
For the toString
, java.util.Arrays
has a toString(int[])
and other overloads you can use. It also has deepToString(Object[])
for nested arrays.
public String toString(Object arr) {
if (arr instanceof int[]) {
return Arrays.toString((int[]) arr);
} else //...
}
It's going to be very repetitive (but even java.util.Arrays
is very repetitive), but that's the way it is in Java with arrays.
In order to assign a variable safely you have to use the SET-SELECT statement:
SET @PrimaryContactKey = (SELECT c.PrimaryCntctKey
FROM tarcustomer c, tarinvoice i
WHERE i.custkey = c.custkey
AND i.invckey = @tmp_key)
Make sure you have both a starting and an ending parenthesis!
The reason the SET-SELECT version is the safest way to set a variable is twofold.
1. The SELECT returns several posts
What happens if the following select results in several posts?
SELECT @PrimaryContactKey = c.PrimaryCntctKey
FROM tarcustomer c, tarinvoice i
WHERE i.custkey = c.custkey
AND i.invckey = @tmp_key
@PrimaryContactKey
will be assigned the value from the last post in the result.
In fact @PrimaryContactKey
will be assigned one value per post in the result, so it will consequently contain the value of the last post the SELECT-command was processing.
Which post is "last" is determined by any clustered indexes or, if no clustered index is used or the primary key is clustered, the "last" post will be the most recently added post. This behavior could, in a worst case scenario, be altered every time the indexing of the table is changed.
With a SET-SELECT statement your variable will be set to null
.
2. The SELECT returns no posts
What happens, when using the second version of the code, if your select does not return a result at all?
In a contrary to what you may believe the value of the variable will not be null - it will retain it's previous value!
This is because, as stated above, SQL will assign a value to the variable once per post - meaning it won't do anything with the variable if the result contains no posts. So, the variable will still have the value it had before you ran the statement.
With the SET-SELECT statement the value will be null
.
Yes it is possible.
You need to use the getDeclaredField method (instead of the getField method), with the name of your private field:
Field privateField = Test.class.getDeclaredField("str");
Additionally, you need to set this Field to be accessible, if you want to access a private field:
privateField.setAccessible(true);
Once that's done, you can use the get method on the Field instance, to access the value of the str field.
Here was my scenario.
I had a multi project solution containing projects A, B, C .. N.
Project B was a code library that contained a factory for selectlist
objects.
The project would run as expected in development, but when publishing to our test environment I was getting the error you were encountering:
Could not load file or assembly 'Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
What had happened was through nuget package manager, I had accidentally installed "Microsoft ASP.NET MVC" which installed dependencies for:
Low and behold, Microsoft.AspNet.WebPages depends on "Microsoft.Web.Infrastructure".
My solution was uninstalling the three packages mentioned above (MVC, Razor, WebPages) then right click references > add reference > Assemblies > Extensions > System.Web.MVC.
I would say it would be better to add the javascript in an un-obtrusive manner...
if using jQuery you could do something like:
<script>
$(document).ready(function(){
$('#MyButton').click(function(){
CapacityChart();
});
});
</script>
<input type="button" value="Capacity Chart" id="MyButton" >
emulator -writable-system
For people using an Emulator: Another possibility is that you need to start the emulator with -writable-system. That was the only thing that worked for me when using the standard emulator packaged with android studio with a 4.1 image. Check here: https://stackoverflow.com/a/41332316/4962858
Use online service http://www.extractpdf.com. No need to install anything.
For some reason none of these solutions worked for me. I've had the best success using transforms.
transform: translateX(-5.8%) translateY(-5%) scale(0.884);
The vertical-align css attribute doesn't do what you expect unfortunately. This article explains 2 ways to vertically align an element using css.
Since there is so much confusion about functionality of standard service accounts, I'll try to give a quick run down.
First the actual accounts:
LocalService account (preferred)
A limited service account that is very similar to Network Service and meant to run standard least-privileged services. However, unlike Network Service it accesses the network as an Anonymous user.
NT AUTHORITY\LocalService
HKEY_USERS\S-1-5-19
)
Limited service account that is meant to run standard privileged services. This account is far more limited than Local System (or even Administrator) but still has the right to access the network as the machine (see caveat above).
NT AUTHORITY\NetworkService
MANGO$
) to remote serversHKEY_USERS\S-1-5-20
)NETWORK SERVICE
into the Select User or Group dialog
LocalSystem account (dangerous, don't use!)
Completely trusted account, more so than the administrator account. There is nothing on a single box that this account cannot do, and it has the right to access the network as the machine (this requires Active Directory and granting the machine account permissions to something)
.\LocalSystem
(can also use LocalSystem
or ComputerName\LocalSystem
)HKCU
represents the default user)MANGO$
) to remote servers
Above when talking about accessing the network, this refers solely to SPNEGO (Negotiate), NTLM and Kerberos and not to any other authentication mechanism. For example, processing running as LocalService
can still access the internet.
The general issue with running as a standard out of the box account is that if you modify any of the default permissions you're expanding the set of things everything running as that account can do. So if you grant DBO to a database, not only can your service running as Local Service or Network Service access that database but everything else running as those accounts can too. If every developer does this the computer will have a service account that has permissions to do practically anything (more specifically the superset of all of the different additional privileges granted to that account).
It is always preferable from a security perspective to run as your own service account that has precisely the permissions you need to do what your service does and nothing else. However, the cost of this approach is setting up your service account, and managing the password. It's a balancing act that each application needs to manage.
In your specific case, the issue that you are probably seeing is that the the DCOM or COM+ activation is limited to a given set of accounts. In Windows XP SP2, Windows Server 2003, and above the Activation permission was restricted significantly. You should use the Component Services MMC snapin to examine your specific COM object and see the activation permissions. If you're not accessing anything on the network as the machine account you should seriously consider using Local Service (not Local System which is basically the operating system).
In Windows Server 2003 you cannot run a scheduled task as
NT_AUTHORITY\LocalService
(aka the Local Service account), or NT AUTHORITY\NetworkService
(aka the Network Service account). That capability only was added with Task Scheduler 2.0, which only exists in Windows Vista/Windows Server 2008 and newer.
A service running as NetworkService
presents the machine credentials on the network. This means that if your computer was called mango
, it would present as the machine account MANGO$
:
Here's what I've got so far (found it on the page Ben Alpert mentioned):
SELECT REPLACE(
SUBSTRING(
SUBSTRING_INDEX(c.`courseNames`, ',', e.`courseId` + 1)
, LENGTH(SUBSTRING_INDEX(c.`courseNames`, ',', e.`courseId`)
) + 1)
, ','
, ''
)
FROM `clients` c INNER JOIN `clientenrols` e USING (`clientId`)
Sometimes Your rake tasks doesn't get loaded in console, In that case you can try the following commands
require "rake"
YourApp::Application.load_tasks
Rake::Task["Namespace:task"].invoke
You can use the google docs OCR reader.
You should use sendfile apis given by popular servers like apache
or nginx
in production. Many years i was using sendfile api of these servers for protecting files. Then created a simple middleware based django app for this purpose suitable for both development & production purpose.You can access the source code here.
UPDATE: in new version python
provider uses django FileResponse
if available and also adds support for many server implementations from lighthttp, caddy to hiawatha
Usage
pip install django-fileprovider
fileprovider
app to INSTALLED_APPS
settings,fileprovider.middleware.FileProviderMiddleware
to MIDDLEWARE_CLASSES
settingsFILEPROVIDER_NAME
settings to nginx
or apache
in production, by default it is python
for development purpose.in your classbased or function views set response header X-File
value to absolute path to the file. For example,
def hello(request):
// code to check or protect the file from unauthorized access
response = HttpResponse()
response['X-File'] = '/absolute/path/to/file'
return response
django-fileprovider
impemented in a way that your code will need only minimum modification.
Nginx configuration
To protect file from direct access you can set the configuration as
location /files/ {
internal;
root /home/sideffect0/secret_files/;
}
Here nginx
sets a location url /files/
only access internaly, if you are using above configuration you can set X-File as,
response['X-File'] = '/files/filename.extension'
By doing this with nginx configuration, the file will be protected & also you can control the file from django views
You can find answer in depth here.
But in general with float
you need to be aware and take care of the surrounding elements and inline-block
simple way to line elements.
Thanks
You're over-complicating it - it just needs to be:
void generateArray(int *a, int si)
{
for (int j = 0; j < si; j++)
a[j] = rand() % 9;
}
int main()
{
const int size=5;
int a[size];
generateArray(a, size);
return 0;
}
When you pass an array as a parameter to a function it decays to a pointer to the first element of the array. So there is normally never a need to pass a pointer to an array.
In Python, what is the purpose of
__slots__
and what are the cases one should avoid this?
The special attribute __slots__
allows you to explicitly state which instance attributes you expect your object instances to have, with the expected results:
The space savings is from
__dict__
.__dict__
and __weakref__
creation if parent classes deny them and you declare __slots__
.Small caveat, you should only declare a particular slot one time in an inheritance tree. For example:
class Base:
__slots__ = 'foo', 'bar'
class Right(Base):
__slots__ = 'baz',
class Wrong(Base):
__slots__ = 'foo', 'bar', 'baz' # redundant foo and bar
Python doesn't object when you get this wrong (it probably should), problems might not otherwise manifest, but your objects will take up more space than they otherwise should. Python 3.8:
>>> from sys import getsizeof
>>> getsizeof(Right()), getsizeof(Wrong())
(56, 72)
This is because the Base's slot descriptor has a slot separate from the Wrong's. This shouldn't usually come up, but it could:
>>> w = Wrong()
>>> w.foo = 'foo'
>>> Base.foo.__get__(w)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: foo
>>> Wrong.foo.__get__(w)
'foo'
The biggest caveat is for multiple inheritance - multiple "parent classes with nonempty slots" cannot be combined.
To accommodate this restriction, follow best practices: Factor out all but one or all parents' abstraction which their concrete class respectively and your new concrete class collectively will inherit from - giving the abstraction(s) empty slots (just like abstract base classes in the standard library).
See section on multiple inheritance below for an example.
To have attributes named in __slots__
to actually be stored in slots instead of a __dict__
, a class must inherit from object
.
To prevent the creation of a __dict__
, you must inherit from object
and all classes in the inheritance must declare __slots__
and none of them can have a '__dict__'
entry.
There are a lot of details if you wish to keep reading.
__slots__
: Faster attribute access.The creator of Python, Guido van Rossum, states that he actually created __slots__
for faster attribute access.
It is trivial to demonstrate measurably significant faster access:
import timeit
class Foo(object): __slots__ = 'foo',
class Bar(object): pass
slotted = Foo()
not_slotted = Bar()
def get_set_delete_fn(obj):
def get_set_delete():
obj.foo = 'foo'
obj.foo
del obj.foo
return get_set_delete
and
>>> min(timeit.repeat(get_set_delete_fn(slotted)))
0.2846834529991611
>>> min(timeit.repeat(get_set_delete_fn(not_slotted)))
0.3664822799983085
The slotted access is almost 30% faster in Python 3.5 on Ubuntu.
>>> 0.3664822799983085 / 0.2846834529991611
1.2873325658284342
In Python 2 on Windows I have measured it about 15% faster.
__slots__
: Memory SavingsAnother purpose of __slots__
is to reduce the space in memory that each object instance takes up.
My own contribution to the documentation clearly states the reasons behind this:
The space saved over using
__dict__
can be significant.
SQLAlchemy attributes a lot of memory savings to __slots__
.
To verify this, using the Anaconda distribution of Python 2.7 on Ubuntu Linux, with guppy.hpy
(aka heapy) and sys.getsizeof
, the size of a class instance without __slots__
declared, and nothing else, is 64 bytes. That does not include the __dict__
. Thank you Python for lazy evaluation again, the __dict__
is apparently not called into existence until it is referenced, but classes without data are usually useless. When called into existence, the __dict__
attribute is a minimum of 280 bytes additionally.
In contrast, a class instance with __slots__
declared to be ()
(no data) is only 16 bytes, and 56 total bytes with one item in slots, 64 with two.
For 64 bit Python, I illustrate the memory consumption in bytes in Python 2.7 and 3.6, for __slots__
and __dict__
(no slots defined) for each point where the dict grows in 3.6 (except for 0, 1, and 2 attributes):
Python 2.7 Python 3.6
attrs __slots__ __dict__* __slots__ __dict__* | *(no slots defined)
none 16 56 + 272† 16 56 + 112† | †if __dict__ referenced
one 48 56 + 272 48 56 + 112
two 56 56 + 272 56 56 + 112
six 88 56 + 1040 88 56 + 152
11 128 56 + 1040 128 56 + 240
22 216 56 + 3344 216 56 + 408
43 384 56 + 3344 384 56 + 752
So, in spite of smaller dicts in Python 3, we see how nicely __slots__
scale for instances to save us memory, and that is a major reason you would want to use __slots__
.
Just for completeness of my notes, note that there is a one-time cost per slot in the class's namespace of 64 bytes in Python 2, and 72 bytes in Python 3, because slots use data descriptors like properties, called "members".
>>> Foo.foo
<member 'foo' of 'Foo' objects>
>>> type(Foo.foo)
<class 'member_descriptor'>
>>> getsizeof(Foo.foo)
72
__slots__
:To deny the creation of a __dict__
, you must subclass object
:
class Base(object):
__slots__ = ()
now:
>>> b = Base()
>>> b.a = 'a'
Traceback (most recent call last):
File "<pyshell#38>", line 1, in <module>
b.a = 'a'
AttributeError: 'Base' object has no attribute 'a'
Or subclass another class that defines __slots__
class Child(Base):
__slots__ = ('a',)
and now:
c = Child()
c.a = 'a'
but:
>>> c.b = 'b'
Traceback (most recent call last):
File "<pyshell#42>", line 1, in <module>
c.b = 'b'
AttributeError: 'Child' object has no attribute 'b'
To allow __dict__
creation while subclassing slotted objects, just add '__dict__'
to the __slots__
(note that slots are ordered, and you shouldn't repeat slots that are already in parent classes):
class SlottedWithDict(Child):
__slots__ = ('__dict__', 'b')
swd = SlottedWithDict()
swd.a = 'a'
swd.b = 'b'
swd.c = 'c'
and
>>> swd.__dict__
{'c': 'c'}
Or you don't even need to declare __slots__
in your subclass, and you will still use slots from the parents, but not restrict the creation of a __dict__
:
class NoSlots(Child): pass
ns = NoSlots()
ns.a = 'a'
ns.b = 'b'
And:
>>> ns.__dict__
{'b': 'b'}
However, __slots__
may cause problems for multiple inheritance:
class BaseA(object):
__slots__ = ('a',)
class BaseB(object):
__slots__ = ('b',)
Because creating a child class from parents with both non-empty slots fails:
>>> class Child(BaseA, BaseB): __slots__ = ()
Traceback (most recent call last):
File "<pyshell#68>", line 1, in <module>
class Child(BaseA, BaseB): __slots__ = ()
TypeError: Error when calling the metaclass bases
multiple bases have instance lay-out conflict
If you run into this problem, You could just remove __slots__
from the parents, or if you have control of the parents, give them empty slots, or refactor to abstractions:
from abc import ABC
class AbstractA(ABC):
__slots__ = ()
class BaseA(AbstractA):
__slots__ = ('a',)
class AbstractB(ABC):
__slots__ = ()
class BaseB(AbstractB):
__slots__ = ('b',)
class Child(AbstractA, AbstractB):
__slots__ = ('a', 'b')
c = Child() # no problem!
'__dict__'
to __slots__
to get dynamic assignment:class Foo(object):
__slots__ = 'bar', 'baz', '__dict__'
and now:
>>> foo = Foo()
>>> foo.boink = 'boink'
So with '__dict__'
in slots we lose some of the size benefits with the upside of having dynamic assignment and still having slots for the names we do expect.
When you inherit from an object that isn't slotted, you get the same sort of semantics when you use __slots__
- names that are in __slots__
point to slotted values, while any other values are put in the instance's __dict__
.
Avoiding __slots__
because you want to be able to add attributes on the fly is actually not a good reason - just add "__dict__"
to your __slots__
if this is required.
You can similarly add __weakref__
to __slots__
explicitly if you need that feature.
The namedtuple builtin make immutable instances that are very lightweight (essentially, the size of tuples) but to get the benefits, you need to do it yourself if you subclass them:
from collections import namedtuple
class MyNT(namedtuple('MyNT', 'bar baz')):
"""MyNT is an immutable and lightweight object"""
__slots__ = ()
usage:
>>> nt = MyNT('bar', 'baz')
>>> nt.bar
'bar'
>>> nt.baz
'baz'
And trying to assign an unexpected attribute raises an AttributeError
because we have prevented the creation of __dict__
:
>>> nt.quux = 'quux'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'MyNT' object has no attribute 'quux'
You can allow __dict__
creation by leaving off __slots__ = ()
, but you can't use non-empty __slots__
with subtypes of tuple.
Even when non-empty slots are the same for multiple parents, they cannot be used together:
class Foo(object):
__slots__ = 'foo', 'bar'
class Bar(object):
__slots__ = 'foo', 'bar' # alas, would work if empty, i.e. ()
>>> class Baz(Foo, Bar): pass
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: Error when calling the metaclass bases
multiple bases have instance lay-out conflict
Using an empty __slots__
in the parent seems to provide the most flexibility, allowing the child to choose to prevent or allow (by adding '__dict__'
to get dynamic assignment, see section above) the creation of a __dict__
:
class Foo(object): __slots__ = ()
class Bar(object): __slots__ = ()
class Baz(Foo, Bar): __slots__ = ('foo', 'bar')
b = Baz()
b.foo, b.bar = 'foo', 'bar'
You don't have to have slots - so if you add them, and remove them later, it shouldn't cause any problems.
Going out on a limb here: If you're composing mixins or using abstract base classes, which aren't intended to be instantiated, an empty __slots__
in those parents seems to be the best way to go in terms of flexibility for subclassers.
To demonstrate, first, let's create a class with code we'd like to use under multiple inheritance
class AbstractBase:
__slots__ = ()
def __init__(self, a, b):
self.a = a
self.b = b
def __repr__(self):
return f'{type(self).__name__}({repr(self.a)}, {repr(self.b)})'
We could use the above directly by inheriting and declaring the expected slots:
class Foo(AbstractBase):
__slots__ = 'a', 'b'
But we don't care about that, that's trivial single inheritance, we need another class we might also inherit from, maybe with a noisy attribute:
class AbstractBaseC:
__slots__ = ()
@property
def c(self):
print('getting c!')
return self._c
@c.setter
def c(self, arg):
print('setting c!')
self._c = arg
Now if both bases had nonempty slots, we couldn't do the below. (In fact, if we wanted, we could have given AbstractBase
nonempty slots a and b, and left them out of the below declaration - leaving them in would be wrong):
class Concretion(AbstractBase, AbstractBaseC):
__slots__ = 'a b _c'.split()
And now we have functionality from both via multiple inheritance, and can still deny __dict__
and __weakref__
instantiation:
>>> c = Concretion('a', 'b')
>>> c.c = c
setting c!
>>> c.c
getting c!
Concretion('a', 'b')
>>> c.d = 'd'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'Concretion' object has no attribute 'd'
__class__
assignment with another class that doesn't have them (and you can't add them) unless the slot layouts are identical. (I am very interested in learning who is doing this and why.)You may be able to tease out further caveats from the rest of the __slots__
documentation (the 3.7 dev docs are the most current), which I have made significant recent contributions to.
The current top answers cite outdated information and are quite hand-wavy and miss the mark in some important ways.
__slots__
when instantiating lots of objects"I quote:
"You would want to use
__slots__
if you are going to instantiate a lot (hundreds, thousands) of objects of the same class."
Abstract Base Classes, for example, from the collections
module, are not instantiated, yet __slots__
are declared for them.
Why?
If a user wishes to deny __dict__
or __weakref__
creation, those things must not be available in the parent classes.
__slots__
contributes to reusability when creating interfaces or mixins.
It is true that many Python users aren't writing for reusability, but when you are, having the option to deny unnecessary space usage is valuable.
__slots__
doesn't break picklingWhen pickling a slotted object, you may find it complains with a misleading TypeError
:
>>> pickle.loads(pickle.dumps(f))
TypeError: a class that defines __slots__ without defining __getstate__ cannot be pickled
This is actually incorrect. This message comes from the oldest protocol, which is the default. You can select the latest protocol with the -1
argument. In Python 2.7 this would be 2
(which was introduced in 2.3), and in 3.6 it is 4
.
>>> pickle.loads(pickle.dumps(f, -1))
<__main__.Foo object at 0x1129C770>
in Python 2.7:
>>> pickle.loads(pickle.dumps(f, 2))
<__main__.Foo object at 0x1129C770>
in Python 3.6
>>> pickle.loads(pickle.dumps(f, 4))
<__main__.Foo object at 0x1129C770>
So I would keep this in mind, as it is a solved problem.
The first paragraph is half short explanation, half predictive. Here's the only part that actually answers the question
The proper use of
__slots__
is to save space in objects. Instead of having a dynamic dict that allows adding attributes to objects at anytime, there is a static structure which does not allow additions after creation. This saves the overhead of one dict for every object that uses slots
The second half is wishful thinking, and off the mark:
While this is sometimes a useful optimization, it would be completely unnecessary if the Python interpreter was dynamic enough so that it would only require the dict when there actually were additions to the object.
Python actually does something similar to this, only creating the __dict__
when it is accessed, but creating lots of objects with no data is fairly ridiculous.
The second paragraph oversimplifies and misses actual reasons to avoid __slots__
. The below is not a real reason to avoid slots (for actual reasons, see the rest of my answer above.):
They change the behavior of the objects that have slots in a way that can be abused by control freaks and static typing weenies.
It then goes on to discuss other ways of accomplishing that perverse goal with Python, not discussing anything to do with __slots__
.
The third paragraph is more wishful thinking. Together it is mostly off-the-mark content that the answerer didn't even author and contributes to ammunition for critics of the site.
Create some normal objects and slotted objects:
>>> class Foo(object): pass
>>> class Bar(object): __slots__ = ()
Instantiate a million of them:
>>> foos = [Foo() for f in xrange(1000000)]
>>> bars = [Bar() for b in xrange(1000000)]
Inspect with guppy.hpy().heap()
:
>>> guppy.hpy().heap()
Partition of a set of 2028259 objects. Total size = 99763360 bytes.
Index Count % Size % Cumulative % Kind (class / dict of class)
0 1000000 49 64000000 64 64000000 64 __main__.Foo
1 169 0 16281480 16 80281480 80 list
2 1000000 49 16000000 16 96281480 97 __main__.Bar
3 12284 1 987472 1 97268952 97 str
...
Access the regular objects and their __dict__
and inspect again:
>>> for f in foos:
... f.__dict__
>>> guppy.hpy().heap()
Partition of a set of 3028258 objects. Total size = 379763480 bytes.
Index Count % Size % Cumulative % Kind (class / dict of class)
0 1000000 33 280000000 74 280000000 74 dict of __main__.Foo
1 1000000 33 64000000 17 344000000 91 __main__.Foo
2 169 0 16281480 4 360281480 95 list
3 1000000 33 16000000 4 376281480 99 __main__.Bar
4 12284 0 987472 0 377268952 99 str
...
This is consistent with the history of Python, from Unifying types and classes in Python 2.2
If you subclass a built-in type, extra space is automatically added to the instances to accomodate
__dict__
and__weakrefs__
. (The__dict__
is not initialized until you use it though, so you shouldn't worry about the space occupied by an empty dictionary for each instance you create.) If you don't need this extra space, you can add the phrase "__slots__ = []
" to your class.
Please use view.getLocationOnScreen(int[] location);
(see Javadocs). The answer is in the integer array (x = location[0]
and y = location[1]
).
You don't always want to discard a race condition. If you have a flag which can be read and written by multiple threads, and this flag is set to 'done' by one thread so that other thread stop processing when flag is set to 'done', you don't want that "race condition" to be eliminated. In fact, this one can be referred to as a benign race condition.
However, using a tool for detection of race condition, it will be spotted as a harmful race condition.
More details on race condition here, http://msdn.microsoft.com/en-us/magazine/cc546569.aspx.
Try this:
I use this everywhere where there is a $_POST request.
$username=isset($_POST['username']) ? $_POST['username'] : "";
This is just a short hand boolean, if isset it will set it to $_POST['username'], if not then it will set it to an empty string.
Usage example:
if($username===""){ echo "Field is blank" } else { echo "Success" };
First examine if you really need a global variable instead using it blatantly without consideration to your software architecture.
Let's assuming it passes the test. Depending on usage, Globals can be hard to debug with race conditions and many other "bad things", it's best to approach them from an angle where you're prepared to handle such bad things. So,
static
class (for manageability). The basic outline for such a class would be:
public class Globals
{
private static bool _expired;
public static bool Expired
{
get
{
// Reads are usually simple
return _expired;
}
set
{
// You can add logic here for race conditions,
// or other measurements
_expired = value;
}
}
// Perhaps extend this to have Read-Modify-Write static methods
// for data integrity during concurrency? Situational.
}
Usage from other classes (within same namespace)
// Read
bool areWeAlive = Globals.Expired;
// Write
// past deadline
Globals.Expired = true;
use nth-child(item number) EX
<div class="parent_class">
<div class="myclass">my text1</div>
some other code+containers...
<div class="myclass">my text2</div>
some other code+containers...
<div class="myclass">my text3</div>
some other code+containers...
</div>
.parent_class:nth-child(1) { };
.parent_class:nth-child(2) { };
.parent_class:nth-child(3) { };
OR
:nth-of-type(item number) same your code
.myclass:nth-of-type(1) { };
.myclass:nth-of-type(2) { };
.myclass:nth-of-type(3) { };
Starting from C# 2.0, you can use the nullable generic type Nullable, and in C# there is a shorthand notation the type followed by ?
e.g.
private void Example(int? arg1, int? arg2)
{
if(arg1 == null)
{
//do something
}
if(arg2 == null)
{
//do something else
}
}
Python 3 version of @DiGMi's answer:
from urllib import request
f = open('00000001.jpg', 'wb')
f.write(request.urlopen("http://www.gunnerkrigg.com/comics/00000001.jpg").read())
f.close()
Edit: As in a comment rightly requested here some more information. Use the include
tag
<include
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="@layout/yourlayout" />
to include the layout you want to reuse.
Check this link out...
Just look at the python GUI programming options at http://wiki.python.org/moin/GuiProgramming. But, Consider Wxpython for your GUI application as it is cross platform. And,from above link you could also get some IDE to work upon.
Use the str_contains
function.
if (str_contains($str, "."))
{
echo 'Found it';
}
else
{
echo 'Not found.';
}
if (strpos($str, '.') !== FALSE)
{
echo 'Found it';
}
else
{
echo 'Not found.';
}
Note that you need to use the !==
operator. If you use !=
or <>
and the '.'
is found at position 0
, the comparison will evaluate to true because 0
is loosely equal to false
.
Check this out: wintee
No need for cygwin.
I did encounter and report some issues though.
Also you might check unxutils because it contains tee (and no need for cygwin), but beware that output EOL's are UNIX-like here.
Last, but not least, is if you have PowerShell, you could try Tee-Object. Type get-help tee-object
in PowerShell console for more info.
UPDATE: 22/03/2017
main fragment layout:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<RadioGroup
android:id="@+id/page_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|bottom"
android:layout_marginBottom="@dimen/margin_help_container"
android:orientation="horizontal">
<RadioButton
android:id="@+id/page1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true" />
<RadioButton
android:id="@+id/page2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RadioButton
android:id="@+id/page3"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RadioGroup>
</FrameLayout>
set up view and event on your fragment like this:
mViewPaper = (ViewPager) view.findViewById(R.id.viewpager);
mViewPaper.setAdapter(adapder);
mPageGroup = (RadioGroup) view.findViewById(R.id.page_group);
mPageGroup.setOnCheckedChangeListener(this);
mViewPaper.addOnPageChangeListener(this);
*************************************************
*************************************************
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
// when current page change -> update radio button state
int radioButtonId = mPageGroup.getChildAt(position).getId();
mPageGroup.check(radioButtonId);
}
@Override
public void onPageScrollStateChanged(int state) {
}
@Override
public void onCheckedChanged(RadioGroup radioGroup, int checkedId) {
// when checked radio button -> update current page
RadioButton checkedRadioButton = (RadioButton)radioGroup.findViewById(checkedId);
// get index of checked radio button
int index = radioGroup.indexOfChild(checkedRadioButton);
// update current page
mViewPaper.setCurrentItem(index), true);
}
custom checkbox state: Custom checkbox image android
Viewpager tutorial: http://architects.dzone.com/articles/android-tutorial-using
When a thread is executing and you want to execute the main UI thread which is blocked by current thread, then use the below:
current thread:
Dispatcher.CurrentDispatcher.Invoke(MethodName,
new object[] { parameter1, parameter2 }); // if passing 2 parameters to method.
Main UI thread:
Application.Current.Dispatcher.BeginInvoke(
DispatcherPriority.Background, new Action(() => MethodName(parameter)));
You can use ng-required for your validation scenario ("if these 3 fields are filled in, then this field is required":
<div ng-app>
<input type="text" ng-model="field1" placeholder="Field1">
<input type="text" ng-model="field2" placeholder="Field2">
<input type="text" ng-model="field3" placeholder="Field3">
<input type="text" ng-model="dependentField" placeholder="Custom validation"
ng-required="field1 && field2 && field3">
</div>
I want share my experience. A few days ago I have to update 21 million records in table with 76 million records. My colleague suggested the next variant. For example, we have the next table 'Persons':
Id | FirstName | LastName | Email | JobTitle
1 | John | Doe | [email protected] | Software Developer
2 | John1 | Doe1 | [email protected] | Software Developer
3 | John2 | Doe2 | [email protected] | Web Designer
Task: Update persons to the new Job Title: 'Software Developer' -> 'Web Developer'.
1. Create Temporary Table 'Persons_SoftwareDeveloper_To_WebDeveloper (Id INT Primary Key)'
2. Select into temporary table persons which you want to update with the new Job Title:
INSERT INTO Persons_SoftwareDeveloper_To_WebDeveloper SELECT Id FROM
Persons WITH(NOLOCK) --avoid lock
WHERE JobTitle = 'Software Developer'
OPTION(MAXDOP 1) -- use only one core
Depends on rows count, this statement will take some time to fill your temporary table, but it would avoid locks. In my situation it took about 5 minutes (21 million rows).
3. The main idea is to generate micro sql statements to update database. So, let's print them:
DECLARE @i INT, @pagesize INT, @totalPersons INT
SET @i=0
SET @pagesize=2000
SELECT @totalPersons = MAX(Id) FROM Persons
while @i<= @totalPersons
begin
Print '
UPDATE persons
SET persons.JobTitle = ''ASP.NET Developer''
FROM Persons_SoftwareDeveloper_To_WebDeveloper tmp
JOIN Persons persons ON tmp.Id = persons.Id
where persons.Id between '+cast(@i as varchar(20)) +' and '+cast(@i+@pagesize as varchar(20)) +'
PRINT ''Page ' + cast((@i / @pageSize) as varchar(20)) + ' of ' + cast(@totalPersons/@pageSize as varchar(20))+'
GO
'
set @i=@i+@pagesize
end
After executing this script you will receive hundreds of batches which you can execute in one tab of MS SQL Management Studio.
4. Run printed sql statements and check for locks on table. You always can stop process and play with @pageSize to speed up or speed down updating(don't forget to change @i after you pause script).
5. Drop Persons_SoftwareDeveloper_To_AspNetDeveloper. Remove temporary table.
Minor Note: This migration could take a time and new rows with invalid data could be inserted during migration. So, firstly fix places where your rows adds. In my situation I fixed UI, 'Software Developer' -> 'Web Developer'.
ThisWorkbook.Sheets.Add After:=Sheets(Sheets.Count)
ActiveSheet.Name = "XYZ"
(when you add a worksheet, anyway it'll be the active sheet)
Bjarne Stroustrup's example in his C++ FAQ suggests you are correct, and only need a definition if you take the address.
class AE {
// ...
public:
static const int c6 = 7;
static const int c7 = 31;
};
const int AE::c7; // definition
int f()
{
const int* p1 = &AE::c6; // error: c6 not an lvalue
const int* p2 = &AE::c7; // ok
// ...
}
He says "You can take the address of a static member if (and only if) it has an out-of-class definition". Which suggests it would work otherwise. Maybe your min function invokes addresses somehow behind the scenes.
.html file
<ion-card-content>
<div class='summary_row'>
<div class='summarycell'>Header 1</div>
<div class='summarycell'>Header 2</div>
<div class='summarycell'>Header 3</div>
<div class='summarycell'>Header 4</div>
<div class='summarycell'>Header 5</div>
<div class='summarycell'>Header 6</div>
<div class='summarycell'>Header 7</div>
</div>
<div class='summary_row'>
<div class='summarycell'>
Cell1
</div>
<div class='summarycell'>
Cell2
</div>
<div class='summarycell'>
Cell3
</div>
<div class='summarycell'>
Cell5
</div>
<div class='summarycell'>
Cell6
</div>
<div class='summarycell'>
Cell7
</div>
<div class='summarycell'>
Cell8
</div>
</div>
.scss file
.row{_x000D_
display: flex;_x000D_
flex-wrap: wrap;_x000D_
width: max-content;_x000D_
}_x000D_
.row:first-child .summarycell{_x000D_
font-weight: bold;_x000D_
text-align: center;_x000D_
}_x000D_
.cell{_x000D_
overflow: auto;_x000D_
word-wrap: break-word;_x000D_
width: 27vw;_x000D_
border: 1px solid #b3b3b3;_x000D_
padding: 10px;_x000D_
text-align: right;_x000D_
}_x000D_
.cell:nth-child(2){_x000D_
}_x000D_
.cell:first-child{_x000D_
width:41vw;_x000D_
text-align: left;_x000D_
}
_x000D_
I've been having similar issues and my solution(s) are as follows.
If you don't have any client side validation then you can simply use the jquery one() method as documented here.
This disables the handler after its been invoked.
$("#mysavebuttonid").on("click", function () {
$('form').submit();
});
If you're doing client side validation as I was doing then its slightly more tricky. The above example would not let you submit again after failed validation. Try this approach instead
$("#mysavebuttonid").on("click", function (event) {
$('form').submit();
if (boolFormPassedClientSideValidation) {
//form has passed client side validation and is going to be saved
//now disable this button from future presses
$(this).off(event);
}
});
You cannot concatenate a string
with an int
. You would need to convert your int
to a string
using the str
function, or use formatting
to format your output.
Change: -
print("Ok. Your balance is now at " + balanceAfterStrength + " skill points.")
to: -
print("Ok. Your balance is now at {} skill points.".format(balanceAfterStrength))
or: -
print("Ok. Your balance is now at " + str(balanceAfterStrength) + " skill points.")
or as per the comment, use ,
to pass different strings to your print
function, rather than concatenating using +
: -
print("Ok. Your balance is now at ", balanceAfterStrength, " skill points.")
Lessons to learn from this:
1) Guid is a value type, not a reference type.
2) Calling the default constructor new S()
on any value type always gives you back the all-zero form of that value type, whatever it is. It is logically the same as default(S)
.
I'm going to make a couple of assumptions in my answer. I'm assuming your data starts in A1 and there are no empty cells in the first column of each row that has data.
This code will:
This is not a fast method but will iterate through each one individually as you suggested is your intention.
Sub iterateThroughAll()
ScreenUpdating = False
Dim wks As Worksheet
Set wks = ActiveSheet
Dim rowRange As Range
Dim colRange As Range
Dim LastCol As Long
Dim LastRow As Long
LastRow = wks.Cells(wks.Rows.Count, "A").End(xlUp).Row
Set rowRange = wks.Range("A1:A" & LastRow)
'Loop through each row
For Each rrow In rowRange
'Find Last column in current row
LastCol = wks.Cells(rrow, wks.Columns.Count).End(xlToLeft).Column
Set colRange = wks.Range(wks.Cells(rrow, 1), wks.Cells(rrow, LastCol))
'Loop through all cells in row up to last col
For Each cell In colRange
'Do something to each cell
Debug.Print (cell.Value)
Next cell
Next rrow
ScreenUpdating = True
End Sub
4 years late on the topic, but this might be helpful to someone.
If you forgot to create a new branch before committing and committed all on master, no matter how many commits you did, the following approach is easier:
git stash # skip if all changes are committed
git branch my_feature
git reset --hard origin/master
git checkout my_feature
git stash pop # skip if all changes were committed
Now you have your master branch equals to origin/master
and all new commits are on my_feature
. Note that my_feature
is a local branch, not a remote one.
The latest PowerShell version as of Aug 2016 is PowerShell 5.1. It's bundled with Windows Management Framework 5.1.
Here's the download page for PowerShell 5.1 for all versions of Windows, including Windows 7 x64 and x86.
It is worth noting that PowerShell 5.1 is the first version available in two editions of "Desktop" and "Core". Powershell Core 6.x is cross-platform, its latest version for Jan 2019 is 6.1.2. It also works on Windows 7 SP1.
Try to execute the procedure like this,
var c refcursor;
execute pkg_name.get_user('14232', '15', 'TDWL', 'SA', 1, :c);
print c;
If you're running a recent-ish version of pandas then you can use the datetime attribute dt
to access the datetime components:
In [6]:
df['date'] = pd.to_datetime(df['date'])
df['year'], df['month'] = df['date'].dt.year, df['date'].dt.month
df
Out[6]:
date Count year month
0 2010-06-30 525 2010 6
1 2010-07-30 136 2010 7
2 2010-08-31 125 2010 8
3 2010-09-30 84 2010 9
4 2010-10-29 4469 2010 10
EDIT
It looks like you're running an older version of pandas in which case the following would work:
In [18]:
df['date'] = pd.to_datetime(df['date'])
df['year'], df['month'] = df['date'].apply(lambda x: x.year), df['date'].apply(lambda x: x.month)
df
Out[18]:
date Count year month
0 2010-06-30 525 2010 6
1 2010-07-30 136 2010 7
2 2010-08-31 125 2010 8
3 2010-09-30 84 2010 9
4 2010-10-29 4469 2010 10
Regarding why it didn't parse this into a datetime in read_csv
you need to pass the ordinal position of your column ([0]
) because when True
it tries to parse columns [1,2,3]
see the docs
In [20]:
t="""date Count
6/30/2010 525
7/30/2010 136
8/31/2010 125
9/30/2010 84
10/29/2010 4469"""
df = pd.read_csv(io.StringIO(t), sep='\s+', parse_dates=[0])
df.info()
<class 'pandas.core.frame.DataFrame'>
Int64Index: 5 entries, 0 to 4
Data columns (total 2 columns):
date 5 non-null datetime64[ns]
Count 5 non-null int64
dtypes: datetime64[ns](1), int64(1)
memory usage: 120.0 bytes
So if you pass param parse_dates=[0]
to read_csv
there shouldn't be any need to call to_datetime
on the 'date' column after loading.
var str = "Hello, this is Mike (example)";
alert(str.replace(/\s*\(.*?\)\s*/g, ''));
That'll also replace excess whitespace before and after the parentheses.
in macOS make service by automator.
that's it. you can assign short cut.
There is no need to include a bulky library such as Moment.js to fix such a simple issue.
The issue you are facing is not with formatting, but with parsing.
As John Shammas mentions in another answer, the Date
constructor (and Date.parse
) are picky about the input. Your 2016-01-04 10:34:23
may work in one JavaScript implementation, but not necessarily in the other.
According to the specification of ECMAScript 5.1, Date.parse
supports (a simplification of) ISO 8601. That's good news, because your date is already very ISO 8601-like.
All you have to do is change the input format just a little. Swap the space for a T
: 2016-01-04T10:34:23
; and optionally add a time zone (2016-01-04T10:34:23+01:00
), otherwise UTC is assumed.
Even though this is bit late response, may be helpful for someone. Look like you have used pluginManagement. If you use pluginManagement , it will not pick the plug-in execution.
It should be under
<build>
<plugins>
<plugin>
First thing printStackTrace() is not expensive as you state, because the stack trace is filled when the exception is created itself.
The idea is to pass anything that goes to logs through a logger framework, so that the logging can be controlled. Hence instead of using printStackTrace, just use something like Logger.log(msg, exception);
This is a good question. You often see people use re.compile without reason. It lessens readability. But sure there are lots of times when pre-compiling the expression is called for. Like when you use it repeated times in a loop or some such.
It's like everything about programming (everything in life actually). Apply common sense.
I am pretty late to this but was having similar issues and after a day of going through a lot of the answers here and getting background I have found the easiest/lightweight solution to pass back one or more parameters to a Web API 2 Action is as follows:
This assumes that you know how to setup a Web API controller/action with correct routing, if not refer to: https://docs.microsoft.com/en-us/aspnet/web-api/overview/getting-started-with-aspnet-web-api/tutorial-your-first-web-api.
First the Controller Action, this solution also requires the Newtonsoft.Json library.
[HttpPost]
public string PostProcessData([FromBody]string parameters) {
if (!String.IsNullOrEmpty(parameters)) {
JObject json = JObject.Parse(parameters);
// Code logic below
// Can access params via json["paramName"].ToString();
}
return "";
}
Client Side using jQuery
var dataToSend = JSON.stringify({ param1: "value1", param2: "value2"...});
$.post('/Web_API_URI', { '': dataToSend }).done(function (data) {
console.debug(data); // returned data from Web API
});
The key issue I found was making sure you only send a single overall parameter back to the Web API and make sure it has no name just the value { '': dataToSend }
otherwise your value will be null on the server side.
With this you can send one or many parameters to the Web API in a JSON structure and you don't need to declare any extra objects server side to handle complex data. The JObject also allows you to dynamically iterate over all parameters passed in allowing easier scalability should your parameters change over time. Hopefully that helps someone out that was struggling like me.
Take a look at the mstring module for node.js.
This is a simple little module that lets you have multi-line strings in JavaScript.
Just do this:
var M = require('mstring')
var mystring = M(function(){/***
Ontario
Mining and
Forestry
Group
***/})
to get
mystring === "Ontario\nMining and\nForestry\nGroup"
And that's pretty much it.
How It Works
In Node.js, you can call the.toString
method of a function, and it will give you the source code of the function definition, including any comments. A regular expression grabs the content of the comment.Yes, it's a hack. Inspired by a throwaway comment from Dominic Tarr.
note: The module (as of 2012/13/11) doesn't allow whitespace before the closing ***/
, so you'll need to hack it in yourself.
I always use the x:Name variant. I have no idea if this affects any performance, I just find it easier for the following reason. If you have your own usercontrols that reside in another assembly just the "Name" property won't always suffice. This makes it easier to just stick too the x:Name property.
You can make windows bat file like this.
D: (your dexired drive)
cd \Your\Desired\Start\Derectory
Jupyter notebook
Save it as 'JupyterNB.bat' (or whatever you like), and double click it.
Remove the spaces before the autoplay=1:
src="https://www.youtube.com/embed/-SFcIUEvNOQ?autoplay=1&;enablejsapi=1"
Actually the correct answer to this is to just add the schema to your document, like so
<packages xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
...and you're done :)
If the XSD is not already cached and unavailable, you can add it as follows from the NuGet console
Install-Package NuGet.Manifest.Schema -Version 2.0.0
Once this is done, as noted in a comment below, you may want to move it from your current folder to the official schema folder that is found in
%VisualStudioPath%\Xml\Schemas
If you use same color for whole program , you can define printf()
function.
#include<stdio.h>
#define ah_red "\e[31m"
#define printf(X) printf(ah_red "%s",X);
#int main()
{
printf("Bangladesh");
printf("\n");
return 0;
}
You can reset the counter with:
ALTER TABLE tablename AUTO_INCREMENT = 1
For InnoDB you cannot set the auto_increment
value lower or equal to the highest current index. (quote from ViralPatel):
Note that you cannot reset the counter to a value less than or equal to any that have already been used. For MyISAM, if the value is less than or equal to the maximum value currently in the AUTO_INCREMENT column, the value is reset to the current maximum plus one. For InnoDB, if the value is less than the current maximum value in the column, no error occurs and the current sequence value is not changed.
See How to Reset an MySQL AutoIncrement using a MAX value from another table? on how to dynamically get an acceptable value.
Another way to restore the menu bar is to trigger the View: Toggle Menu Bar
command in the command palette (F1).
For a fairly easy copy / paste for .NET applications, I wrote this to enable CORS from within a global.asax
file. This code follows the advice given in the currently accepted answer, reflecting whatever origin back is given in the request into the response. This effectively achieves '*' without using it.
The reason for this is that it enables multiple other CORS features, including the ability to send an AJAX XMLHttpRequest with the 'withCredentials' attribute set to 'true'.
void Application_BeginRequest(object sender, EventArgs e)
{
if (Request.HttpMethod == "OPTIONS")
{
Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
Response.AddHeader("Access-Control-Max-Age", "1728000");
Response.End();
}
else
{
Response.AddHeader("Access-Control-Allow-Credentials", "true");
if (Request.Headers["Origin"] != null)
Response.AddHeader("Access-Control-Allow-Origin" , Request.Headers["Origin"]);
else
Response.AddHeader("Access-Control-Allow-Origin" , "*");
}
}
Why the map
/lambda
magic? Doesn't this work?
>>> foo = ['a', 'b', 'c']
>>> print(','.join(foo))
a,b,c
>>> print(','.join([]))
>>> print(','.join(['a']))
a
In case if there are numbers in the list, you could use list comprehension:
>>> ','.join([str(x) for x in foo])
or a generator expression:
>>> ','.join(str(x) for x in foo)
$dynamicarray = array();
for($i=0;$i<10;$i++)
{
$dynamicarray[$i]=$i;
}
I've worked around the inability to put a border on the select in IE7 (IE8 in compatibility mode)
By giving it a border as wel as a padding, it looks like something....
Not everything, but it's start...
Similar to @Sumit Jain's solution
Date currentDate = new Date(System.currentTimeMillis() - 3600 * 1000);
or
Date currentDate = new Date(System.currentTimeMillis() - TimeUnit.HOURS.toMillis(1));
@albert's solution was the closest I think but it can only parse up to 3 byte utf-8 characters
function utf8ArrayToStr(array) {
var out, i, len, c;
var char2, char3;
out = "";
len = array.length;
i = 0;
// XXX: Invalid bytes are ignored
while(i < len) {
c = array[i++];
if (c >> 7 == 0) {
// 0xxx xxxx
out += String.fromCharCode(c);
continue;
}
// Invalid starting byte
if (c >> 6 == 0x02) {
continue;
}
// #### MULTIBYTE ####
// How many bytes left for thus character?
var extraLength = null;
if (c >> 5 == 0x06) {
extraLength = 1;
} else if (c >> 4 == 0x0e) {
extraLength = 2;
} else if (c >> 3 == 0x1e) {
extraLength = 3;
} else if (c >> 2 == 0x3e) {
extraLength = 4;
} else if (c >> 1 == 0x7e) {
extraLength = 5;
} else {
continue;
}
// Do we have enough bytes in our data?
if (i+extraLength > len) {
var leftovers = array.slice(i-1);
// If there is an invalid byte in the leftovers we might want to
// continue from there.
for (; i < len; i++) if (array[i] >> 6 != 0x02) break;
if (i != len) continue;
// All leftover bytes are valid.
return {result: out, leftovers: leftovers};
}
// Remove the UTF-8 prefix from the char (res)
var mask = (1 << (8 - extraLength - 1)) - 1,
res = c & mask, nextChar, count;
for (count = 0; count < extraLength; count++) {
nextChar = array[i++];
// Is the char valid multibyte part?
if (nextChar >> 6 != 0x02) {break;};
res = (res << 6) | (nextChar & 0x3f);
}
if (count != extraLength) {
i--;
continue;
}
if (res <= 0xffff) {
out += String.fromCharCode(res);
continue;
}
res -= 0x10000;
var high = ((res >> 10) & 0x3ff) + 0xd800,
low = (res & 0x3ff) + 0xdc00;
out += String.fromCharCode(high, low);
}
return {result: out, leftovers: []};
}
This returns {result: "parsed string", leftovers: [list of invalid bytes at the end]}
in case you are parsing the string in chunks.
EDIT: fixed the issue that @unhammer found.
I had the same problem. The solutions was to use core.js instead of debug.core.js
If you inspect the User Agent StyleSheet of Chome, you'll find this
outline: -webkit-focus-ring-color auto 5px;
in short its outline property - make it None
that should remove the glow
You are trying to copy the war
file to a directory below webapps
. The war file should be copied into the webapps
directory.
Remove the mkdir command, and copy the war
file like this:
COPY /1.0-SNAPSHOT/my-app-1.0-SNAPSHOT.war /usr/local/tomcat/webapps/myapp.war
Tomcat will extract the war if autodeploy
is turned on.
Type this .... SET foreign_key_checks = 0;
delete your table then type SET foreign_key_checks = 1;
MySQL – Temporarily disable Foreign Key Checks or Constraints
It probably is the # sign like tho others have mentioned because this appears to work just fine.
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<select id="#ticket_category_clone">
<option value="hw">Hardware</option>
<option>fsdf</option>
<option>sfsd</option>
<option>sdfs</option>
</select>
<script type="text/javascript">
(function check() {
var e = document.getElementById("#ticket_category_clone");
var str = e.options[e.selectedIndex].text;
alert(str);
if (str === "Hardware") {
alert('Hi');
}
})();
</script>
</body>
Because the # convention is a common one, and there really isn't anything you can do with a multiline comment that you can't with a #-sign comment. It's a historical accident, like the ancestry of /* ... */
comments going back to PL/I,
You could also use the php native funcion get_browser()
IMPORTANT NOTE: You should have a browscap.ini file.
You can do it with a LINQ like solution instead of a regular expression:
string input = "123- abcd33";
string chars = new String(input.Where(c => c != '-' && (c < '0' || c > '9')).ToArray());
A quick performance test shows that this is about five times faster than using a regular expression.
To answer a more generic case, this error is noticed when you pick a function name which is already used in some built in library. For e.g., select.
A simple method to know about it is while compiling the file, the compiler will indicate the previous declaration.
The way you are using await/async is poor at best, and it makes it hard to follow. You are mixing await
with Task'1.Result
, which is just confusing. However, it looks like you are looking at a final task result, rather than the contents.
I've rewritten your function and function call, which should fix your issue:
async Task<string> GetResponseString(string text)
{
var httpClient = new HttpClient();
var parameters = new Dictionary<string, string>();
parameters["text"] = text;
var response = await httpClient.PostAsync(BaseUri, new FormUrlEncodedContent(parameters));
var contents = await response.Content.ReadAsStringAsync();
return contents;
}
And your final function call:
Task<string> result = GetResponseString(text);
var finalResult = result.Result;
Or even better:
var finalResult = await GetResponseString(text);
As of jQuery 1.7, .on()
is now the preferred method of binding events, rather than .bind()
:
From http://api.jquery.com/bind/:
As of jQuery 1.7, the .on() method is the preferred method for attaching event handlers to a document. For earlier versions, the .bind() method is used for attaching an event handler directly to elements. Handlers are attached to the currently selected elements in the jQuery object, so those elements must exist at the point the call to .bind() occurs. For more flexible event binding, see the discussion of event delegation in .on() or .delegate().
The documentation page is located at http://api.jquery.com/on/
Attach onchange
event to the checkbox:
<input class="coupon_question" type="checkbox" name="coupon_question" value="1" onchange="valueChanged()"/>
<script type="text/javascript">
function valueChanged()
{
if($('.coupon_question').is(":checked"))
$(".answer").show();
else
$(".answer").hide();
}
</script>
Having fixed the height and width you sholud tell the how to bahave if the text inside it overflows its area. So add in the css
overflow: auto;
public static void main(String[] args) {
int[] toyNumber = new int[] {5};
NewClass temp = new NewClass();
temp.play(toyNumber);
System.out.println("Toy number in main " + toyNumber[0]);
}
void play(int[] toyNumber){
System.out.println("Toy number in play " + toyNumber[0]);
toyNumber[0]++;
System.out.println("Toy number in play after increement " + toyNumber[0]);
}
I believe this is what you're looking for:
Convert Decimal Numbers to Text showing only the non-zero decimals
Especially this line might be helpful:
StringVar text := Totext ( {Your.NumberField} , 6 , "" ) ;
The first parameter is the decimal to be converted, the second parameter is the number of decimal places and the third parameter is the separator for thousands/millions etc.
A more clear usage might be to use switch parameters instead. Then, just the existence of the Unify parameter would mean it was set.
Like so:
param (
[int] $Turn,
[switch] $Unify
)
This may be an old question but I have tried this method to remove query params. Seems to work smoothly for me as I needed a reload as well combined with removing of query params.
window.location.href = window.location.origin + window.location.pathname;
Also since I am using simple string addition operation I am guessing the performance will be good. But Still worth comparing with snippets in this answer
Ok so this might be the very best option for shallow copying. If follows the many examples using assign, but it also keeps the inheritance and prototype. It's so simple too and works for most array-like and Objects except those with constructor requirements or read-only properties. But that means it fails miserably for TypedArrays, RegExp, Date, Maps, Sets and Object versions of primitives (Boolean, String, etc..).
function copy ( a ) { return Object.assign( new a.constructor, a ) }
Where a
can be any Object or class constructed instance, but again not be reliable for thingies that use specialized getters and setters or have constructor requirements, but for more simple situations it rocks. It does work on arguments as well.
You can also apply it to primitives to get strange results, but then... unless it just ends up being a useful hack, who cares.
results from basic built-in Object and Array...
> a = { a: 'A', b: 'B', c: 'C', d: 'D' }
{ a: 'A', b: 'B', c: 'C', d: 'D' }
> b = copy( a )
{ a: 'A', b: 'B', c: 'C', d: 'D' }
> a = [1,2,3,4]
[ 1, 2, 3, 4 ]
> b = copy( a )
[ 1, 2, 3, 4 ]
And fails because of mean get/setters, constructor required arguments or read-only properties, and sins against the father.
> a = /\w+/g
/\w+/g
> b = copy( a ) // fails because source and flags are read-only
/(?:)/
> a = new Date ( '1/1/2001' )
2000-12-31T16:00:00.000Z
> b = copy( a ) // fails because Date using methods to get and set things
2017-02-04T14:44:13.990Z
> a = new Boolean( true )
[Boolean: true]
> b = copy( a ) // fails because of of sins against the father
[Boolean: false]
> a = new Number( 37 )
[Number: 37]
> b = copy( a ) // fails because of of sins against the father
[Number: 0]
> a = new String( 'four score and seven years ago our four fathers' )
[String: 'four score and seven years ago our four fathers']
> b = copy( a ) // fails because of of sins against the father
{ [String: ''] '0': 'f', '1': 'o', '2': 'u', '3': 'r', '4': ' ', '5': 's', '6': 'c', '7': 'o', '8': 'r', '9': 'e', '10': ' ', '11': 'a', '12': 'n', '13': 'd', '14': ' ', '15': 's', '16': 'e', '17': 'v', '18': 'e', '19': 'n', '20': ' ', '21': 'y', '22': 'e', '23': 'a', '24': 'r', '25': 's', '26': ' ', '27': 'a', '28': 'g', '29': 'o', '30': ' ', '31': 'o', '32': 'u', '33': 'r', '34': ' ', '35': 'f', '36': 'o', '37': 'u', '38': 'r', '39': ' ', '40': 'f', '41': 'a', '42': 't', '43': 'h', '44': 'e', '45': 'r', '46': 's' }
I had 20.8 GB in the C:\Users\ggo\AppData\Local\Android\Sdk\system-images folder (6 android images: - android-10 - android-15 - android-21 - android-23 - android-25 - android-26 ).
I have compressed the C:\Users\ggo\AppData\Local\Android\Sdk\system-images folder.
Now it takes only 4.65 GB.
I did not encountered any problem up to now...
Compression seems to vary from 2/3 to 6, sometimes much more:
There is a way to get a range of values in a single query, but its a bit slow. It can be sped up by using cache tables.
assume you want a select with a range of all BOOLEAN values:
SELECT 0 as b UNION SELECT 1 as b;
we can make a view
CREATE VIEW ViewBoolean AS SELECT 0 as b UNION SELECT 1 as b;
then you can do a Byte by
CREATE VIEW ViewByteValues AS
SELECT b0.b + b1.b*2 + b2.b*4 + b3.b*8 + b4.b*16 + b5.b*32 + b6.b*64 + b7.b*128 as v FROM
ViewBoolean b0,ViewBoolean b1,ViewBoolean b2,ViewBoolean b3,ViewBoolean b4,ViewBoolean b5,ViewBoolean b6,ViewBoolean b7;
then you can do a
CREATE VIEW ViewInt16 AS
SELECT b0.v + b1.v*256 as v FROM
ViewByteValues b0,ViewByteValues b1;
then you can do a
SELECT v+MIN as x FROM ViewInt16 WHERE v<MAX-MIN;
To speed this up I skipped the auto-calculation of byte values and made myself a
CREATE VIEW ViewByteValues AS
SELECT 0 as v UNION SELECT 1 as v UNION SELECT ...
...
...254 as v UNION SELECT 255 as v;
If you need a range of dates you can do.
SELECT DATE_ADD('start_date',v) as day FROM ViewInt16 WHERE v<NumDays;
or
SELECT DATE_ADD('start_date',v) as day FROM ViewInt16 WHERE day<'end_date';
you might be able to speed this up with the slightly faster MAKEDATE function
SELECT MAKEDATE(start_year,1+v) as day FRON ViewInt16 WHERE day>'start_date' AND day<'end_date';
Please note that this tricks are VERY SLOW and only allow the creation of FINITE sequences in a pre-defined domain (for example int16 = 0...65536 )
I am sure you can modify the queries a bit to speed things up by hinting to MySQL where to stop calculating ;) (using ON clauses instead of WHERE clauses and stuff like that)
For example:
SELECT MIN + (b0.v + b1.v*256 + b2.v*65536 + b3.v*16777216) FROM
ViewByteValues b0,
ViewByteValues b1,
ViewByteValues b2,
ViewByteValues b3
WHERE (b0.v + b1.v*256 + b2.v*65536 + b3.v*16777216) < MAX-MIN;
will keep your SQL server busy for a few hours
However
SELECT MIN + (b0.v + b1.v*256 + b2.v*65536 + b3.v*16777216) FROM
ViewByteValues b0
INNER JOIN ViewByteValues b1 ON (b1.v*256<(MAX-MIN))
INNER JOIN ViewByteValues b2 ON (b2.v*65536<(MAX-MIN))
INNER JOIN ViewByteValues b3 ON (b3.v*16777216<(MAX-MIN)
WHERE (b0.v + b1.v*256 + b2.v*65536 + b3.v*16777216) < (MAX-MIN);
will run reasonably fast - even if MAX-MIN is huge as long as you limit the result with LIMIT 1,30 or something. a COUNT(*) however will take ages and if you make the mistake of adding ORDER BY when MAX-MIN is bigger than say 100k it will again take several seconds to calculate...
This will scroll to the very top:
$(window).animate({scrollTop: 0});
This will scroll to the very bottom:
$(window).animate({scrollTop: $(document).height() + $(window).height()});
.. change window to your desired container id or class if necessary (in quotes).
CARL LANGE also showed how to get hidden, autoplaying audio in html5 on a iOS device. Works for me.
In HTML,
<div id="hideme">
<audio id="audioTag" controls>
<source src="/path/to/audio.mp3">
</audio>
</div>
with JS
<script type="text/javascript">
window.onload = function() {
var audioEl = document.getElementById("audioTag");
audioEl.load();
audioEl.play();
};
</script>
In CSS,
#hideme {display: none;}
if you are Executing Linq to Entity
you can't use the ClassType
with new
in the select
closure of query only anonymous types are allowed (new without type)
take look at this snippet of my project
//...
var dbQuery = context.Set<Letter>()
.Include(letter => letter.LetterStatus)
.Select(l => new {Title =l.Title,ID = l.ID, LastModificationDate = l.LastModificationDate, DateCreated = l.DateCreated,LetterStatus = new {ID = l.LetterStatusID.Value,NameInArabic = l.LetterStatus.NameInArabic,NameInEnglish = l.LetterStatus.NameInEnglish} })
^^ without type__________________________________________________________________________________________________________^^ without type
of you added the new keyword
in Select closure even on the complex properties
you will got this error
so
remove
theClassTypes from new
keyword onLinq to Entity
queries ,,
because it will transformed to sql statement and executed on SqlServer
so when can I use new with types
on select
closure?
you can use it if you you are dealing with LINQ to Object (in memory collection)
//opecations in tempList , LINQ to Entities; so we can not use class types in select only anonymous types are allowed
var tempList = dbQuery.Skip(10).Take(10).ToList();// this is list of <anonymous type> so we have to convert it so list of <letter>
//opecations in list , LINQ to Object; so we can use class types in select
list = tempList.Select(l => new Letter{ Title = l.Title, ID = l.ID, LastModificationDate = l.LastModificationDate, DateCreated = l.DateCreated, LetterStatus = new LetterStatus{ ID = l.LetterStatus.ID, NameInArabic = l.LetterStatus.NameInArabic, NameInEnglish = l.LetterStatus.NameInEnglish } }).ToList();
^^^^^^ with type
after I executed ToList
on query it became in memory collection
so we can use new ClassTypes
in select
PyPDF2 in some cases ignores the white spaces and makes the result text a mess, but I use PyMuPDF and I'm really satisfied you can use this link for more info
There is no solution to this problem. As of IE11 on Windows 8, Microsoft no longer allows ActiveX plugins to run in its browser space. There is absolutely nothing that a third party developer can do about it.
A similar thing has recently happened with the Chrome browser which no longer supports NPAPI plugins. Instead Chrome only supports PPAPI plugins which are useless for system level tasks once performed by NPAPI plugins.
So developers needing browser support for system interactive plugins can only recommend either the Firefox browser or the ASPS web browser.
Say you have the following DataFrame
:
>>> df = pd.DataFrame([['hello', 'hello world'], ['abcd', 'defg']], columns=['a','b'])
>>> df
a b
0 hello hello world
1 abcd defg
You can always use the in
operator in a lambda expression to create your filter.
>>> df.apply(lambda x: x['a'] in x['b'], axis=1)
0 True
1 False
dtype: bool
The trick here is to use the axis=1
option in the apply
to pass elements to the lambda function row by row, as opposed to column by column.
2014 answer: Since 2014 HTML now 5 includes a <progress> element
that does not need JavaScript.
The percent value moves with the progress using inline content.
Tested only in webkit. Hope it helps:
CSS:
progress {_x000D_
display:inline-block;_x000D_
width:190px;_x000D_
height:20px;_x000D_
padding:15px 0 0 0;_x000D_
margin:0;_x000D_
background:none;_x000D_
border: 0;_x000D_
border-radius: 15px;_x000D_
text-align: left;_x000D_
position:relative;_x000D_
font-family: Arial, Helvetica, sans-serif;_x000D_
font-size: 0.8em;_x000D_
}_x000D_
progress::-webkit-progress-bar {_x000D_
height:11px;_x000D_
width:150px;_x000D_
margin:0 auto;_x000D_
background-color: #CCC;_x000D_
border-radius: 15px;_x000D_
box-shadow:0px 0px 6px #777 inset;_x000D_
}_x000D_
progress::-webkit-progress-value {_x000D_
display:inline-block;_x000D_
float:left;_x000D_
height:11px;_x000D_
margin:0px -10px 0 0;_x000D_
background: #F70;_x000D_
border-radius: 15px;_x000D_
box-shadow:0px 0px 6px #777 inset;_x000D_
}_x000D_
progress:after {_x000D_
margin:-26px 0 0 -7px;_x000D_
padding:0;_x000D_
display:inline-block;_x000D_
float:left;_x000D_
content: attr(value) '%';_x000D_
}
_x000D_
<progress id="progressBar" max="100" value="77"></progress>
_x000D_
You can use:
Rails.root
But to to join the assets you can use:
Rails.root.join(*%w( app assets))
Hopefully this helps you.
Even if technically feasible, is NOT a good approach. When You say: "The splash screen would have buttons for each room that would allow you to jump to any point on the walk through." So you want to pass through appdelegate to call these controllers via tohc events on buttons?
This approach does not follow Apple guidelines and has a lot of drawbacks.
An easy way to do that is to use the following:
var John = people.findOne({name: "John"});
John.friends.push({firstName: "Harry", lastName: "Potter"});
John.save();
ienumerable:when we want to deal with inprocess memory, i.e without dataconnection iqueryable:when to deal with sql server, i.e with data connection ilist : operations like add object, delete object etc
Sadly the other posters are correct that you're
...actually as corrected by kRON, you are ok with your IE7 and a strict doc, but most of us with IE6 requirements are reduced to JS or class references for this, but it is a CSS2 property, just one without sufficient support from IE^h^h browsers.
Out of completeness, the type selector is - similar to xpath - of the form [attribute=value]
but many interesting variants exist. It will be quite powerful when it's available, good thing to keep in your head for IE8.
if you want to delete rows based on some specific cell value. let suppose we have a file containing 10000 rows, and a fields having value of NULL. and based on that null value want to delete all those rows and records.
here are some simple tip. First open up Find Replace dialog, and on Replace tab, make all those cell containing NULL values with Blank. then press F5 and select the Blank option, now right click on the active sheet, and select delete, then option for Entire row.
it will delete all those rows based on cell value of containing word NULL.
You could use a regular expression like this
If Regex.IsMatch(number, "^[0-9 ]+$") Then
...
End If
When you open a file with the name address.csv
, you are telling the open()
function that your file is in the current working directory. This is called a relative path.
To give you an idea of what that means, add this to your code:
import os
cwd = os.getcwd() # Get the current working directory (cwd)
files = os.listdir(cwd) # Get all the files in that directory
print("Files in %r: %s" % (cwd, files))
That will print the current working directory along with all the files in it.
Another way to tell the open()
function where your file is located is by using an absolute path, e.g.:
f = open("/Users/foo/address.csv")
A good option is Node-supervisor and Node.js Restart on File Change is good article on how to use it, typically:
npm install supervisor -g
and after migrating to the root of your application use the following
supervisor app.js
Return types using arrow notation is the same as previous answers:
const sum = (a: number, b: number) : number => a + b;
Edit:
It actually just occurred to me that in Xcode 7b4, UI testing now has
expectationForPredicate:evaluatedWithObject:handler:
Original:
Another way is to spin the run loop for a set amount of time. Really only useful if you know how much (estimated) time you'll need to wait for
Obj-C:
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate dateWithTimeIntervalSinceNow: <<time to wait in seconds>>]]
Swift:
NSRunLoop.currentRunLoop().runMode(NSDefaultRunLoopMode, beforeDate: NSDate(timeIntervalSinceNow: <<time to wait in seconds>>))
This is not super useful if you need to test some conditions in order to continue your test. To run conditional checks, use a while
loop.
I'd like to add that for accessibility, I think you should add focus trigger :
i.e. $("#popover").popover({ trigger: "hover focus" });
You can also plot to a png file using gnuplot (which is free):
terminal commands
gnuplot> set title '<title>'
gnuplot> set ylabel '<yLabel>'
gnuplot> set xlabel '<xLabel>'
gnuplot> set grid
gnuplot> set term png
gnuplot> set output '<Output file name>.png'
gnuplot> plot '<fromfile.csv>'
note: you always need to give the right extension (.png here) at set output
Then it is also possible that the ouput is not lines, because your data is not continues. To fix this simply change the 'plot' line to:
plot '<Fromfile.csv>' with line lt -1 lw 2
More line editing options (dashes and line color ect.) at: http://gnuplot.sourceforge.net/demo_canvas/dashcolor.html
apt-get install gnuplot
)brew install gnuplot
)If you are accessing scoped beans within Spring Web MVC, i.e. within a request that is processed by the Spring DispatcherServlet, or DispatcherPortlet, then no special setup is necessary: DispatcherServlet and DispatcherPortlet already expose all relevant state.
If you are runnning outside of Spring MVC ( Not processed by DispatchServlet) you have to use the RequestContextListener
Not just ContextLoaderListener
.
Add the following in your web.xml
<listener>
<listener-class>
org.springframework.web.context.request.RequestContextListener
</listener-class>
</listener>
That will provide session to Spring in order to maintain the beans in that scope
Update :
As per other answers , the @Controller
only sensible when you are with in Spring MVC Context, So the @Controller is not serving actual purpose in your code. Still you can inject your beans into any where with session scope / request scope ( you don't need Spring MVC / Controller to just inject beans in particular scope) .
Update :
RequestContextListener exposes the request to the current Thread only.
You have autowired ReportBuilder in two places
1. ReportPage
- You can see Spring injected the Report builder properly here, because we are still in Same web Thread. i did changed the order of your code to make sure the ReportBuilder injected in ReportPage like this.
log.info("ReportBuilder name: {}", reportBuilder.getName());
reportController.getReportData();
i knew the log should go after as per your logic , just for debug purpose i added .
2. UselessTasklet
- We got exception , here because this is different thread created by Spring Batch , where the Request is not exposed by RequestContextListener
.
You should have different logic to create and inject ReportBuilder
instance to Spring Batch ( May Spring Batch Parameters and using Future<ReportBuilder>
you can return for future reference)
I think a 2 step approach is best, because c 2-d arrays are just and array of arrays. The first step is to allocate a single array, then loop through it allocating arrays for each column as you go. This article gives good detail.
Value to val
variable can be assigned only once.
val address = Address("Bangalore","India")
address = Address("Delhi","India") // Error, Reassigning is not possible with val
Though you can't reassign the value but you can certainly modify the properties of the object.
//Given that city and country are not val
address.setCity("Delhi")
address.setCountry("India")
That means you can't change the object reference to which the variable is pointing but the underlying properties of that variable can be changed.
Value to var variable can be reassigned as many times as you want.
var address = Address("Bangalore","India")
address = Address("Delhi","India") // No Error , Reassigning possible.
Obviously, It's underlying properties can be changed as long as they are not declared val.
//Given that city and country are not val
address.setCity("Delhi")
address.setCountry("India")
It's been a moment that this question is asked, but this doesn't mean that we can't share other answers in 2020. Here is an awesome plugin with jquery:jQuery Lazy
The basic usage of Lazy:
HTML
<!-- load background images of other element types -->
<div class="lazy" data-src="path/to/image.jpg"></div>
enter code here
JS
$('.lazy').Lazy({
// your configuration goes here
scrollDirection: 'vertical',
effect: 'fadeIn',
visibleOnly: true,
onError: function(element) {
console.log('error loading ' + element.data('src'));
}
});
and your background images are lazy loading. That's all!
To see real examples and more details check this link lazy-doc.
I believe the official way is still to go thorugh codecvt
facets (you need some sort of locale-aware translation), as in
resultCode = use_facet<codecvt<char, wchar_t, ConversionState> >(locale).
in(stateVar, scratchbuffer, scratchbufferEnd, from, to, toLimit, curPtr);
or something like that, I don't have working code lying around. But I'm not sure how many people these days use that machinery and how many simply ask for pointers to memory and let ICU or some other library handle the gory details.
The solution that works on both Debian and Red Hat. Depends on perl, uses sha-512 hashes:
cat userpassadd
#!/usr/bin/env bash
salt=$(cat /dev/urandom | tr -dc A-Za-z0-9/_- | head -c16)
useradd -p $(perl -e "print crypt('$2', '\$6\$' . '$salt' . '\$')") $1
Usage:
userpassadd jim jimslongpassword
It can effectively be used as a one-liner, but you'll have to specify the password, salt and username at the right places yourself:
useradd -p $(perl -e "print crypt('pass', '\$6\$salt\$')") username
---------------------------------------------------------------------------------- String StringBuffer StringBuilder ---------------------------------------------------------------------------------- Storage Area | Constant String Pool Heap Heap Modifiable | No (immutable) Yes( mutable ) Yes( mutable ) Thread Safe | Yes Yes No Performance | Fast Very slow Fast ----------------------------------------------------------------------------------
If you want to use plain javascript, but avoid promises, you can use Rami Sarieddine's solution, but substitute the promise with a callback function like this:
var getJSON = function(url, callback) {
var xhr = new XMLHttpRequest();
xhr.open('get', url, true);
xhr.responseType = 'json';
xhr.onload = function() {
var status = xhr.status;
if (status == 200) {
callback(null, xhr.response);
} else {
callback(status);
}
};
xhr.send();
};
And you would call it like this:
getJSON('https://www.googleapis.com/freebase/v1/text/en/bob_dylan', function(err, data) {
if (err != null) {
alert('Something went wrong: ' + err);
} else {
alert('Your Json result is: ' + data.result);
result.innerText = data.result;
}
});
As you are trying to add a string of CSS to <head>
with JavaScript?
injecting a string of CSS into a page it is easier to do this with the <link>
element than the <style>
element.
The following adds p { color: green; }
rule to the page.
<link rel="stylesheet" type="text/css" href="data:text/css;charset=UTF-8,p%20%7B%20color%3A%20green%3B%20%7D" />
You can create this in JavaScript simply by URL encoding your string of CSS and adding it the HREF
attribute. Much simpler than all the quirks of <style>
elements or directly accessing stylesheets.
var linkElement = this.document.createElement('link');
linkElement.setAttribute('rel', 'stylesheet');
linkElement.setAttribute('type', 'text/css');
linkElement.setAttribute('href', 'data:text/css;charset=UTF-8,' + encodeURIComponent(myStringOfstyles));
This will work in IE 5.5 upwards
The solution you have marked will work but this solution requires fewer dom operations and only a single element.
Would it be possible to leave the ability to right click and download just when done a separate watermark is placed on the image. Of course this won't prevent screen shots but thought it may be a good middle ground.
This code works very fast. It comes from here
Option Explicit
Private Const clOneMask = 16515072 '000000 111111 111111 111111
Private Const clTwoMask = 258048 '111111 000000 111111 111111
Private Const clThreeMask = 4032 '111111 111111 000000 111111
Private Const clFourMask = 63 '111111 111111 111111 000000
Private Const clHighMask = 16711680 '11111111 00000000 00000000
Private Const clMidMask = 65280 '00000000 11111111 00000000
Private Const clLowMask = 255 '00000000 00000000 11111111
Private Const cl2Exp18 = 262144 '2 to the 18th power
Private Const cl2Exp12 = 4096 '2 to the 12th
Private Const cl2Exp6 = 64 '2 to the 6th
Private Const cl2Exp8 = 256 '2 to the 8th
Private Const cl2Exp16 = 65536 '2 to the 16th
Public Function Encode64(sString As String) As String
Dim bTrans(63) As Byte, lPowers8(255) As Long, lPowers16(255) As Long, bOut() As Byte, bIn() As Byte
Dim lChar As Long, lTrip As Long, iPad As Integer, lLen As Long, lTemp As Long, lPos As Long, lOutSize As Long
For lTemp = 0 To 63 'Fill the translation table.
Select Case lTemp
Case 0 To 25
bTrans(lTemp) = 65 + lTemp 'A - Z
Case 26 To 51
bTrans(lTemp) = 71 + lTemp 'a - z
Case 52 To 61
bTrans(lTemp) = lTemp - 4 '1 - 0
Case 62
bTrans(lTemp) = 43 'Chr(43) = "+"
Case 63
bTrans(lTemp) = 47 'Chr(47) = "/"
End Select
Next lTemp
For lTemp = 0 To 255 'Fill the 2^8 and 2^16 lookup tables.
lPowers8(lTemp) = lTemp * cl2Exp8
lPowers16(lTemp) = lTemp * cl2Exp16
Next lTemp
iPad = Len(sString) Mod 3 'See if the length is divisible by 3
If iPad Then 'If not, figure out the end pad and resize the input.
iPad = 3 - iPad
sString = sString & String(iPad, Chr(0))
End If
bIn = StrConv(sString, vbFromUnicode) 'Load the input string.
lLen = ((UBound(bIn) + 1) \ 3) * 4 'Length of resulting string.
lTemp = lLen \ 72 'Added space for vbCrLfs.
lOutSize = ((lTemp * 2) + lLen) - 1 'Calculate the size of the output buffer.
ReDim bOut(lOutSize) 'Make the output buffer.
lLen = 0 'Reusing this one, so reset it.
For lChar = LBound(bIn) To UBound(bIn) Step 3
lTrip = lPowers16(bIn(lChar)) + lPowers8(bIn(lChar + 1)) + bIn(lChar + 2) 'Combine the 3 bytes
lTemp = lTrip And clOneMask 'Mask for the first 6 bits
bOut(lPos) = bTrans(lTemp \ cl2Exp18) 'Shift it down to the low 6 bits and get the value
lTemp = lTrip And clTwoMask 'Mask for the second set.
bOut(lPos + 1) = bTrans(lTemp \ cl2Exp12) 'Shift it down and translate.
lTemp = lTrip And clThreeMask 'Mask for the third set.
bOut(lPos + 2) = bTrans(lTemp \ cl2Exp6) 'Shift it down and translate.
bOut(lPos + 3) = bTrans(lTrip And clFourMask) 'Mask for the low set.
If lLen = 68 Then 'Ready for a newline
bOut(lPos + 4) = 13 'Chr(13) = vbCr
bOut(lPos + 5) = 10 'Chr(10) = vbLf
lLen = 0 'Reset the counter
lPos = lPos + 6
Else
lLen = lLen + 4
lPos = lPos + 4
End If
Next lChar
If bOut(lOutSize) = 10 Then lOutSize = lOutSize - 2 'Shift the padding chars down if it ends with CrLf.
If iPad = 1 Then 'Add the padding chars if any.
bOut(lOutSize) = 61 'Chr(61) = "="
ElseIf iPad = 2 Then
bOut(lOutSize) = 61
bOut(lOutSize - 1) = 61
End If
Encode64 = StrConv(bOut, vbUnicode) 'Convert back to a string and return it.
End Function
Public Function Decode64(sString As String) As String
Dim bOut() As Byte, bIn() As Byte, bTrans(255) As Byte, lPowers6(63) As Long, lPowers12(63) As Long
Dim lPowers18(63) As Long, lQuad As Long, iPad As Integer, lChar As Long, lPos As Long, sOut As String
Dim lTemp As Long
sString = Replace(sString, vbCr, vbNullString) 'Get rid of the vbCrLfs. These could be in...
sString = Replace(sString, vbLf, vbNullString) 'either order.
lTemp = Len(sString) Mod 4 'Test for valid input.
If lTemp Then
Call Err.Raise(vbObjectError, "MyDecode", "Input string is not valid Base64.")
End If
If InStrRev(sString, "==") Then 'InStrRev is faster when you know it's at the end.
iPad = 2 'Note: These translate to 0, so you can leave them...
ElseIf InStrRev(sString, "=") Then 'in the string and just resize the output.
iPad = 1
End If
For lTemp = 0 To 255 'Fill the translation table.
Select Case lTemp
Case 65 To 90
bTrans(lTemp) = lTemp - 65 'A - Z
Case 97 To 122
bTrans(lTemp) = lTemp - 71 'a - z
Case 48 To 57
bTrans(lTemp) = lTemp + 4 '1 - 0
Case 43
bTrans(lTemp) = 62 'Chr(43) = "+"
Case 47
bTrans(lTemp) = 63 'Chr(47) = "/"
End Select
Next lTemp
For lTemp = 0 To 63 'Fill the 2^6, 2^12, and 2^18 lookup tables.
lPowers6(lTemp) = lTemp * cl2Exp6
lPowers12(lTemp) = lTemp * cl2Exp12
lPowers18(lTemp) = lTemp * cl2Exp18
Next lTemp
bIn = StrConv(sString, vbFromUnicode) 'Load the input byte array.
ReDim bOut((((UBound(bIn) + 1) \ 4) * 3) - 1) 'Prepare the output buffer.
For lChar = 0 To UBound(bIn) Step 4
lQuad = lPowers18(bTrans(bIn(lChar))) + lPowers12(bTrans(bIn(lChar + 1))) + _
lPowers6(bTrans(bIn(lChar + 2))) + bTrans(bIn(lChar + 3)) 'Rebuild the bits.
lTemp = lQuad And clHighMask 'Mask for the first byte
bOut(lPos) = lTemp \ cl2Exp16 'Shift it down
lTemp = lQuad And clMidMask 'Mask for the second byte
bOut(lPos + 1) = lTemp \ cl2Exp8 'Shift it down
bOut(lPos + 2) = lQuad And clLowMask 'Mask for the third byte
lPos = lPos + 3
Next lChar
sOut = StrConv(bOut, vbUnicode) 'Convert back to a string.
If iPad Then sOut = Left$(sOut, Len(sOut) - iPad) 'Chop off any extra bytes.
Decode64 = sOut
End Function
DOMDocument is a great choice. It's a module specifically designed for creating and manipulating XML documents. You can create a document from scratch, or open existing documents (or strings) and navigate and modify their structures.
$xml = new DOMDocument();
$xml_album = $xml->createElement("Album");
$xml_track = $xml->createElement("Track");
$xml_album->appendChild( $xml_track );
$xml->appendChild( $xml_album );
$xml->save("/tmp/test.xml");
To re-open and write:
$xml = new DOMDocument();
$xml->load('/tmp/test.xml');
$nodes = $xml->getElementsByTagName('Album') ;
if ($nodes->length > 0) {
//insert some stuff using appendChild()
}
//re-save
$xml->save("/tmp/test.xml");
You can use the services console, clicking on the left hand side and then selecting the "Connect to another computer" option in the Action menu.
If you wish to use the command line only, you can use
sc \\machine stop <service>
As your list is an ArrayList
, it can be assumed that it is unsorted. Therefore, there is no way to search for your element that is faster than O(n).
If you can, you should think about changing your list into a Set
(with HashSet
as implementation) with a specific Comparator
for your sample class.
Another possibility would be to use a HashMap
. You can add your data as Sample
(please start class names with an uppercase letter) and use the string you want to search for as key. Then you could simply use
Sample samp = myMap.get(myKey);
If there can be multiple samples per key, use Map<String, List<Sample>>
, otherwise use Map<String, Sample>
. If you use multiple keys, you will have to create multiple maps that hold the same dataset. As they all point to the same objects, space shouldn't be that much of a problem.
You can use names
directly in the read_csv
names : array-like, default None List of column names to use. If file contains no header row, then you should explicitly pass header=None
Cov = pd.read_csv("path/to/file.txt",
sep='\t',
names=["Sequence", "Start", "End", "Coverage"])
Implode will combine an array into a string for you, but to make an SQL query out a kay/value pair you'll have to write your own function.
Double click Shift
to open the quick actions. Then search for "Decrease Font Size" or "Increase Font Size" and hit Enter
. To repeat the action you can doubleclick Shift
and Enter
I prefer that way because it works even when you're using not your own Computer without opening settings. Also works without leaving fullscreen, which is useful if you are live coding.
For anyone still coming to this post, the other option is to simply omit the parentheses:
Sub SomeOtherSub(Stattyp As String)
'Daty and the other variables are defined here
CatSubProduktAreakum Stattyp, Daty + UBound(SubCategories) + 2
End Sub
The Call
keywords is only really in VBA for backwards compatibilty and isn't actually required.
If however, you decide to use the Call
keyword, then you have to change your syntax to suit.
'// With Call
Call Foo(Bar)
'// Without Call
Foo Bar
Both will do exactly the same thing.
That being said, there may be instances to watch out for where using parentheses unnecessarily will cause things to be evaluated where you didn't intend them to be (as parentheses do this in VBA) so with that in mind the better option is probably to omit the Call
keyword and the parentheses
#import <QuartzCore/QuartzCore.h>
- (void)viewDidLoad{
UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(50, 220, 200, 100)];
textView.layer.cornerRadius = 5;
textView.clipsToBounds = YES;
[textView.layer setBackgroundColor: [[UIColor whiteColor] CGColor]];
[textView.layer setBorderColor: [[UIColor grayColor] CGColor]];
[textView.layer setBorderWidth: 1.0];
[textView.layer setCornerRadius:8.0f];
[textView.layer setMasksToBounds:YES];
[self.view addSubView:textview];
}
fig = plt.figure()
ax = fig.add_subplot(111)
plt.xticks([0.4,0.14,0.2,0.2], fontsize = 50) # work on current fig
plt.show()
the x/yticks has the same properties as matplotlib.text
Well, you are having a valid access token to access your information and not others( this is because you got logged in and you have given permission to access your information). But the picture owner has not done the same (logged in + permission ) and so you are getting a violation error.
To obtain permission see this link and decide what kind of informations you want from any user and decide the permissions. Later on embed this in your code. (In the login function call)
Thanks
Get the device width:
public static int getWidth(Context context) {
DisplayMetrics displayMetrics = new DisplayMetrics();
WindowManager windowmanager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
windowmanager.getDefaultDisplay().getMetrics(displayMetrics);
return displayMetrics.widthPixels;
}
then use that for making dialog 90% of device,
Dialog filterDialog = new Dialog(context, R.style.searchsdk_FilterDialog);
filterDialog.setContentView(R.layout.searchsdk_filter_popup);
initFilterDialog(filterDialog);
filterDialog.setCancelable(true);
filterDialog.getWindow().setLayout(((getWidth(context) / 100) * 90), LinearLayout.LayoutParams.MATCH_PARENT);
filterDialog.getWindow().setGravity(Gravity.END);
filterDialog.show();
return false;
at the end of the onclick handler will do the job. However, it's be better to simply add type="button"
to the <button>
- that way it behaves properly even without any JavaScript.
Use this:
\d{10}
I hope it helps.
Here is how one can do it. I will give an example with joining so that it becomes super clear to someone.
$products = DB::table('products AS pr')
->leftJoin('product_families AS pf', 'pf.id', '=', 'pr.product_family_id')
->select('pr.id as id', 'pf.name as product_family_name', 'pf.id as product_family_id')
->orderBy('pr.id', 'desc')
->get();
Hope this helps.
Like this:
import java.util.*;
Set<Integer> a = new HashSet<Integer>();
a.add( 1);
a.add( 2);
a.add( 3);
Or adding from an Array/ or multiple literals; wrap to a list, first.
Integer[] array = new Integer[]{ 1, 4, 5};
Set<Integer> b = new HashSet<Integer>();
b.addAll( Arrays.asList( b)); // from an array variable
b.addAll( Arrays.asList( 8, 9, 10)); // from literals
To get the intersection:
// copies all from A; then removes those not in B.
Set<Integer> r = new HashSet( a);
r.retainAll( b);
// and print; r.toString() implied.
System.out.println("A intersect B="+r);
Hope this answer helps. Vote for it!
Try doing this:
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
Instead of this:
actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
I was having the same problem, I had a ComboBox followed by a ListBox in a StackPanel and the scroll bar for the ListBox was not showing up. I solved this by putting the two in a DockPanel instead. I set the ComboBox DockPanel.Dock="Top" and let the ListBox fill the remaining space.
These regexes are equivalent (for matching purposes):
/^(7|8|9)\d{9}$/
/^[789]\d{9}$/
/^[7-9]\d{9}$/
The explanation:
(a|b|c)
is a regex "OR" and means "a or b or c", although the presence of brackets, necessary for the OR, also captures the digit. To be strictly equivalent, you would code (?:7|8|9)
to make it a non capturing group.
[abc]
is a "character class" that means "any character from a,b or c" (a character class may use ranges, e.g. [a-d]
= [abcd]
)
The reason these regexes are similar is that a character class is a shorthand for an "or" (but only for single characters). In an alternation, you can also do something like (abc|def)
which does not translate to a character class.
I had a similar problem but it had to do with the structure and class of the object. I would check how dih_y2$MemberID
is formatted.
df = pd.read_csv('filename.csv', sep='\t', header=0)
You can load the tsv file directly into pandas data frame by specifying delimitor and header.
If you are inside a .then() block and you want to execute a settimeout()
.then(() => {
console.log('wait for 10 seconds . . . . ');
return new Promise(function(resolve, reject) {
setTimeout(() => {
console.log('10 seconds Timer expired!!!');
resolve();
}, 10000)
});
})
.then(() => {
console.log('promise resolved!!!');
})
output will as shown below
wait for 10 seconds . . . .
10 seconds Timer expired!!!
promise resolved!!!
Happy Coding!
[print(a) for a in list]
will give a bunch of None types at the end though it prints out all the items
Check out the CharsetEncoder
and CharsetDecoder
API descriptions - You should follow a specific sequence of method calls to avoid this problem. For example, for CharsetEncoder
:
reset
method, unless it has not been used before;encode
method zero or more times, as long as additional input may be available, passing false
for the endOfInput argument and filling the input buffer and flushing the output buffer between invocations;encode
method one final time, passing true
for the endOfInput argument; and thenflush
method so that the encoder can flush any internal state to the output buffer.By the way, this is the same approach I am using for NIO although some of my colleagues are converting each char directly to a byte in the knowledge they are only using ASCII, which I can imagine is probably faster.
\n
in c3 working correctlyusing System;
namespace testing2
public class Test {
public static void Main(string[] args) {
Console.WriteLine("Enter your name");
String s = Console.ReadLine();
Console.WriteLine("Your name is " + s + "\n" + "Thank You");
}
}
https://stackoverflow.com/a/42234988/9536897 it's not work on mobile mode.
than you can try:
// returns true if the element or one of its parents has the class classname
hasSomeParentTheClass(element, classname) {
if(element.target)
element=element.target;
if (element.className&& element.className.split(" ").indexOf(classname) >= 0) return true;
return (
element.parentNode &&
this.hasSomeParentTheClass(element.parentNode, classname)
);
}
componentDidMount() {
const fthis = this;
$(window).click(function (element) {
if (!fthis.hasSomeParentTheClass(element, "myClass"))
fthis.setState({ pharmacyFocus: null });
});
}
I found this nice code on web.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Unicode {
public static void main(String[] args) {
System.out.println("Use CTRL+C to quite to program.");
// Create the reader for reading in the text typed in the console.
InputStreamReader inputStreamReader = new InputStreamReader(System.in);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
try {
String line = null;
while ((line = bufferedReader.readLine()).length() > 0) {
for (int index = 0; index < line.length(); index++) {
// Convert the integer to a hexadecimal code.
String hexCode = Integer.toHexString(line.codePointAt(index)).toUpperCase();
// but the it must be a four number value.
String hexCodeWithAllLeadingZeros = "0000" + hexCode;
String hexCodeWithLeadingZeros = hexCodeWithAllLeadingZeros.substring(hexCodeWithAllLeadingZeros.length()-4);
System.out.println("\\u" + hexCodeWithLeadingZeros);
}
}
} catch (IOException ioException) {
ioException.printStackTrace();
}
}
}