Noise reduction, the less types you expose the more simple your library is. Tamper proofing / Security is another (although Reflection can win against it).
I believe that phrase should have been worded as follows:
bcrypt has salts built into the generated hashes to prevent rainbow table attacks.
The bcrypt
utility itself does not appear to maintain a list of salts. Rather, salts are generated randomly and appended to the output of the function so that they are remembered later on (according to the Java implementation of bcrypt
). Put another way, the "hash" generated by bcrypt
is not just the hash. Rather, it is the hash and the salt concatenated.
If you want to fetch + merge, run
git pull
if you want simply to fetch :
git fetch
I've used the same approach but the problem is that when tab page was removed from the tab control TabPages list, it is removed from the tab page Controls list also. And it is not disposed when form is disposed.
So if you have a lot of such "hidden" tab pages, you can get windows handle quota exceeded error and only application restart will fix it.
I ended up finding MinimalistTelnet and adapted it to my uses. I ended up needing to be able to heavily modify the code due to the unique** device that I am attempting to attach to.
** Unique in this instance can be validly interpreted as brain-dead.
Use Conveyor by Keyoti (extensión de Visual Studio). Extension visual studio
putting NOW() in quotes won't work as Active Records will put escape the NOW() into a string and tries to push it into the db as a string of "NOW()"... you will need to use
$this->db->set('time', 'NOW()', FALSE);
to set it correctly.
you can always check your sql afterward with
$this->db->last_query();
It means the text is stored as wchar_t
characters rather than plain old char
characters.
(I originally said it meant unicode. I was wrong about that. But it can be used for unicode.)
The answer by Aaron is the best and is working for me :) I would vote it up but sadly I can't (missing reputation).
I've to say testing private methods is the only way to use them and have clean code on the other side.
For example:
class Something {
save(){
const data = this.getAllUserData()
if (this.validate(data))
this.sendRequest(data)
}
private getAllUserData () {...}
private validate(data) {...}
private sendRequest(data) {...}
}
It' makes a lot of sense to not test all these methods at once because we would need to mock out those private methods, which we can't mock out because we can't access them. This means we need a lot of configuration for a unit test to test this as a whole.
This said the best way to test the method above with all dependencies is an end to end test, because here an integration test is needed, but the E2E test won't help you if you are practicing TDD (Test Driven Development), but testing any method will.
Feedback Guys, first create database example live; before execute sql file below.
sqlcmd -U SA -P yourPassword -S YourHost -d live -i live.sql
With regular expressions
import re
s="""
qwertyuiop
asdfghjkl
zxcvbnm
token qwerty
asdfghjklñ
"""
>>> items=re.findall("token.*$",s,re.MULTILINE)
>>> for x in items:
... print x
...
token qwerty
This is a simple and maybe not the best solution, but it works.
On the line above the line you get your error, paste this:
// eslint-disable-next-line no-restricted-globals
If someone have this problem, maybe you just have to install build-essential.
apt install build-essential
The easiest way to convert back it in PowerShell
[System.Net.NetworkCredential]::new("", $SecurePassword).Password
Everybody says "Each id value must be used only once within a document", but what we do to get the elements we need when we have a stupid page that has more than one element with same id. If we use JQuery '#duplicatedId' selector we get the first element only. To achieve selecting the other elements you can do something like this
$("[id=duplicatedId]")
You will get a collection with all elements with id=duplicatedId
Service: startservice can cause side affects,best way to use messenger and pass data.
private CallBackHandler mServiceHandler= new CallBackHandler(this);
private Messenger mServiceMessenger=null;
//flag with which the activity sends the data to service
private static final int DO_SOMETHING=1;
private static class CallBackHandler extends android.os.Handler {
private final WeakReference<Service> mService;
public CallBackHandler(Service service) {
mService= new WeakReference<Service>(service);
}
public void handleMessage(Message msg) {
//Log.d("CallBackHandler","Msg::"+msg);
if(DO_SOMETHING==msg.arg1)
mSoftKeyService.get().dosomthing()
}
}
Activity:Get Messenger from Intent fill it pass data and pass the message back to service
private Messenger mServiceMessenger;
@Override
protected void onCreate(Bundle savedInstanceState) {
mServiceMessenger = (Messenger)extras.getParcelable("myHandler");
}
private void sendDatatoService(String data){
Intent serviceIntent= new
Intent(BaseActivity.this,Service.class);
Message msg = Message.obtain();
msg.obj =data;
msg.arg1=Service.DO_SOMETHING;
mServiceMessenger.send(msg);
}
There's a situation where the cell has white space, you can't see it, use
df['col'].replace(' ', np.nan, inplace=True)
to replace white space as NaN, then
df= df.dropna(subset=['col'])
More precise:
$.each($('.testimonal'), function(index, value) {
console.log(index + ':' + value);
});
(SELECT C.I_WORKDATE
FROM T_COMPENSATION C
WHERE C.I_COMPENSATEDDATE = A.I_REQDATE AND ROWNUM <= 1
AND C.I_EMPID = A.I_EMPID)
The link to the help page is the same for python 2.6 and as far as I know there was no change in the csv module since 2.5 (besides bug fixes). Here is the code that just works without any encoding/decoding (file da.csv contains the same data as the variable data). I assume that your file should be read correctly without any conversions.
test.py:
## -*- coding: utf-8 -*-
#
# NOTE: this first line is important for the version b) read from a string(unicode) variable
#
import csv
data = \
"""0665000FS10120684,SD1200IS,Appareil photo numérique PowerShot de 10 Mpx de Canon avec trépied (SD1200IS) - Bleu
0665000FS10120689,SD1200IS,Appareil photo numérique PowerShot de 10 Mpx de Canon avec trépied (SD1200IS) - Gris
0665000FS10120687,SD1200IS,Appareil photo numérique PowerShot de 10 Mpx de Canon avec trépied (SD1200IS) - Vert"""
# a) read from a file
print 'reading from a file:'
for (f1, f2, f3) in csv.reader(open('da.csv'), dialect=csv.excel):
print (f1, f2, f3)
# b) read from a string(unicode) variable
print 'reading from a list of strings:'
reader = csv.reader(data.split('\n'), dialect=csv.excel)
for (f1, f2, f3) in reader:
print (f1, f2, f3)
da.csv:
0665000FS10120684,SD1200IS,Appareil photo numérique PowerShot de 10 Mpx de Canon avec trépied (SD1200IS) - Bleu
0665000FS10120689,SD1200IS,Appareil photo numérique PowerShot de 10 Mpx de Canon avec trépied (SD1200IS) - Gris
0665000FS10120687,SD1200IS,Appareil photo numérique PowerShot de 10 Mpx de Canon avec trépied (SD1200IS) - Vert
If you use AngularJs ngModel directive, remember that the value of value
attribute does not bind on ngModel field.You have to init it by yourself and the best way to do it,is
<input type="text"
id="rootFolder"
ng-init="rootFolders = 'Bob'"
ng-model="rootFolders"
disabled="disabled"
value="Bob"
size="40"/>
The problem with many answers here is that "\r\n\r\n"
can legitimately appear in the body of the html, so you can't be sure that you're splitting headers correctly.
It seems that the only way to store headers separately with one call to curl_exec
is to use a callback as is suggested above in https://stackoverflow.com/a/25118032/3326494
And then to (reliably) get just the body of the request, you would need to pass the value of the Content-Length
header to substr()
as a negative start value.
Your implementation must like:
public boolean equals2(Object object2) {
if(a.equals(object2.a)) {
return true;
}
else return false;
}
With this implementation your both methods would work.
I was getting this error, even though I have exported RouterModule from app-routing.module and imported app-routingModule in Root module(app module).
Then I identified, I've imported component in Routing Module only.
Declaring the component in my Root module(App Module) solves the problem.
declarations: [
AppComponent,
NavBarComponent,
HomeComponent,
LoginComponent],
Does
$ git log -p
do what you need?
Check out the chapter on Git Log in the Git Community Book for more examples. (Or look at the the documentation.)
Update: As others (Jakub and Bombe) already pointed out: although the above works, git show is actually the command that is intended to do exactly what was asked for.
name() is literally the textual name in the java code of the enum. That means it is limited to strings that can actually appear in your java code, but not all desirable strings are expressible in code. For example, you may need a string that begins with a number. name() will never be able to obtain that string for you.
Using UITableViewController
The solution accepted will change the height of the TableViewCell
. To fix that, perform following steps:
Write code snippet given below in ViewDidLoad
method.
tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
Add following method in the TableViewClass.m
file.
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return (cell height set on storyboard);
}
That's it. You can build and run your project.
I know that's not the best answer, but if you can't get the classpath working, this is a plan B solution.
In my test classpath, I added the following interface with a default implementation for the describeMismatch method.
package org.hamcrest;
/**
* PATCH because there's something wrong with the classpath. Hamcrest should be higher than Mockito so that the BaseMatcher
* implements the describeMismatch method, but it doesn't work for me.
*/
public interface Matcher<T> extends SelfDescribing {
boolean matches(Object item);
default void describeMismatch(Object item, Description mismatchDescription) {
mismatchDescription.appendDescriptionOf(this).appendValue(item);
}
@Deprecated
void _dont_implement_Matcher___instead_extend_BaseMatcher_();
}
Facebook sharer.php parameters for sharing posts.
<a href="javascript: void(0);"
data-layout="button"
onclick="window.open('https://www.facebook.com/sharer.php?u=MyPageUrl&summary=MySummary&title=MyTitle&description=MyDescription&picture=MyYmageUrl', 'ventanacompartir', 'toolbar=0, status=0, width=650, height=450');"> Share </a>
Don't use spaces, use  
.
Not exactly for this OP, but for those who encountered 404 and cannot set response content-type
to "application/json"
(any content-type
). One possibility is a server actually responds 406 but explorer (e.g., chrome) prints it as 404.
If you do not customize message converter, spring would use AbstractMessageConverterMethodProcessor.java
. It would run:
List<MediaType> requestedMediaTypes = getAcceptableMediaTypes(request);
List<MediaType> producibleMediaTypes = getProducibleMediaTypes(request, valueType, declaredType);
and if they do not have any overlapping (the same item), it would throw HttpMediaTypeNotAcceptableException
and this finally causes 406. No matter if it is an ajax, or GET/POST, or form action, if the request uri ends with a .html
or any suffix, the requestedMediaTypes
would be "text/[that suffix]", and this conflicts with producibleMediaTypes
, which is usually:
"application/json"
"application/xml"
"text/xml"
"application/*+xml"
"application/json"
"application/*+json"
"application/json"
"application/*+json"
"application/xml"
"text/xml"
"application/*+xml"
"application/xml"
"text/xml"
"application/*+xml"
Type npm list graceful-fs
and you will see which versions of graceful-fs are currently installed.
In my case I got:
npm list graceful-fs
@request/[email protected] /projects/request/promise-core
+-- [email protected]
| `-- [email protected]
| +-- [email protected]
| | `-- [email protected]
| | `-- [email protected]
| | `-- [email protected]
| | `-- [email protected] <==== !!!
| `-- [email protected]
`-- [email protected]
+-- [email protected]
| `-- [email protected]
| `-- [email protected]
| `-- [email protected]
| `-- [email protected]
`-- [email protected]
`-- [email protected]
`-- [email protected]
As you can see gulp
deep down depends on a very old version. Unfortunately, I can't update that myself using npm update graceful-fs
. gulp
would need to update their dependencies. So if you have a case like this you are out of luck. But you may open an issue for the project with the old dependency - i.e. gulp
.
There's actually a good reason:
The non-static access does not always work, for reasons of ambiguity.
Suppose we have two classes, A and B, the latter being a subclass of A, with static fields with the same name:
public class A {
public static String VALUE = "Aaa";
}
public class B extends A {
public static String VALUE = "Bbb";
}
Direct access to the static variable:
A.VALUE (="Aaa")
B.VALUE (="Bbb")
Indirect access using an instance (gives a compiler warning that VALUE should be statically accessed):
new B().VALUE (="Bbb")
So far, so good, the compiler can guess which static variable to use, the one on the superclass is somehow farther away, seems somehow logical.
Now to the point where it gets tricky: Interfaces can also have static variables.
public interface C {
public static String VALUE = "Ccc";
}
public interface D {
public static String VALUE = "Ddd";
}
Let's remove the static variable from B, and observe following situations:
B implements C, D
B extends A implements C
B extends A implements C, D
B extends A implements C
where A implements D
B extends A implements C
where C extends D
The statement new B().VALUE
is now ambiguous, as the compiler cannot decide which static variable was meant, and will report it as an error:
error: reference to VALUE is ambiguous
both variable VALUE in C and variable VALUE in D match
And that's exactly the reason why static variables should be accessed in a static way.
If you just want to pass a std::string
to a function that needs const char*
you can use
std::string str;
const char * c = str.c_str();
If you want to get a writable copy, like char *
, you can do that with this:
std::string str;
char * writable = new char[str.size() + 1];
std::copy(str.begin(), str.end(), writable);
writable[str.size()] = '\0'; // don't forget the terminating 0
// don't forget to free the string after finished using it
delete[] writable;
Edit: Notice that the above is not exception safe. If anything between the new
call and the delete
call throws, you will leak memory, as nothing will call delete
for you automatically. There are two immediate ways to solve this.
boost::scoped_array
will delete the memory for you upon going out of scope:
std::string str;
boost::scoped_array<char> writable(new char[str.size() + 1]);
std::copy(str.begin(), str.end(), writable.get());
writable[str.size()] = '\0'; // don't forget the terminating 0
// get the char* using writable.get()
// memory is automatically freed if the smart pointer goes
// out of scope
This is the standard way (does not require any external library). You use std::vector
, which completely manages the memory for you.
std::string str;
std::vector<char> writable(str.begin(), str.end());
writable.push_back('\0');
// get the char* using &writable[0] or &*writable.begin()
if(list.ElementAtOrDefault(2) != null)
{
// logic
}
ElementAtOrDefault() is part of the System.Linq
namespace.
Although you have a List, so you can use list.Count > 2
.
/**
* Intent to Send SMS
*
*
* Extras:
*
* "subject"
* A string for the message subject (usually for MMS only).
* "sms_body"
* A string for the text message.
* EXTRA_STREAM
* A Uri pointing to the image or video to attach.
*
* For More Info:
* https://developer.android.com/guide/components/intents-common#SendMessage
*
* @param phoneNumber on which SMS to send
* @param message text Message to send with SMS
*/
public void startSMSIntent(String phoneNumber, String message) {
Intent intent = new Intent(Intent.ACTION_SENDTO);
// This ensures only SMS apps respond
intent.setData(Uri.parse("smsto:"+phoneNumber));
intent.putExtra("sms_body", message);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
}
}
var EM = new events_managment();
EM.addEvent(window, 'resize', function(win,doc, event_){
console.log('resized');
//EM.removeEvent(win,doc, event_);
});
function events_managment(){
this.events = {};
this.addEvent = function(node, event_, func){
if(node.addEventListener){
if(event_ in this.events){
node.addEventListener(event_, function(){
func(node, event_);
this.events[event_](win_doc, event_);
}, true);
}else{
node.addEventListener(event_, function(){
func(node, event_);
}, true);
}
this.events[event_] = func;
}else if(node.attachEvent){
var ie_event = 'on' + event_;
if(ie_event in this.events){
node.attachEvent(ie_event, function(){
func(node, ie_event);
this.events[ie_event]();
});
}else{
node.attachEvent(ie_event, function(){
func(node, ie_event);
});
}
this.events[ie_event] = func;
}
}
this.removeEvent = function(node, event_){
if(node.removeEventListener){
node.removeEventListener(event_, this.events[event_], true);
this.events[event_] = null;
delete this.events[event_];
}else if(node.detachEvent){
node.detachEvent(event_, this.events[event_]);
this.events[event_] = null;
delete this.events[event_];
}
}
}
You can use the LocalForward
directive in your host yam
section of ~/.ssh/config
:
LocalForward 5901 computer.myHost.edu:5901
A quick and dirty way is to use Thread.currentThread().setName(myName);
in the run()
method.
if ($("#cartContent").children().length == 0)
{
// no child
}
jQuery(function() {_x000D_
jQuery('#showall').click(function() {_x000D_
jQuery('.targetDiv').show();_x000D_
});_x000D_
jQuery('.showSingle').click(function() {_x000D_
jQuery('.targetDiv').hide();_x000D_
jQuery('#div' + $(this).attr('target')).show();_x000D_
});_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>_x000D_
<div class="buttons">_x000D_
<a id="showall">All</a>_x000D_
<a class="showSingle" target="1">Div 1</a>_x000D_
<a class="showSingle" target="2">Div 2</a>_x000D_
<a class="showSingle" target="3">Div 3</a>_x000D_
<a class="showSingle" target="4">Div 4</a>_x000D_
</div>_x000D_
_x000D_
<div id="div1" class="targetDiv">Lorum Ipsum1</div>_x000D_
<div id="div2" class="targetDiv">Lorum Ipsum2</div>_x000D_
<div id="div3" class="targetDiv">Lorum Ipsum3</div>_x000D_
<div id="div4" class="targetDiv">Lorum Ipsum4</div>
_x000D_
I used this at the end of the web.php
or api.php
file and it worked perfectly:
URL::forceScheme('https');
@System.Configuration.ConfigurationManager.AppSettings["myKey"]
user infomation is stored in /etc/passwd, so you can use "grep 'usename' /etc/passwd" to check if the username exist. meanwhile you can use "id" shell command, it will print the user id and group id, if the user does not exist, it will print "no such user" message.
I've had to do a verification of a letsencrypt certificate and I did it like this:
Issue this command:
$ openssl verify -CAfile letsencrypt-root-cert/isrgrootx1.pem.txt -untrusted letsencrypt-intermediate-cert/letsencryptauthorityx3.pem.txt /etc/letsencrypt/live/sitename.tld/cert.pem
/etc/letsencrypt/live/sitename.tld/cert.pem: OK
On my French keyboard, it's CTRL + ^.
Check this code based on the article Geo-Distance-Search-with-MySQL:
Example: find the 10 nearest hotels to my current location in a 10 miles radius:
#Please notice that (lat,lng) values mustn't be negatives to perform all calculations
set @my_lat=34.6087674878572;
set @my_lng=58.3783670308302;
set @dist=10; #10 miles radius
SELECT dest.id, dest.lat, dest.lng, 3956 * 2 * ASIN(SQRT(POWER(SIN((@my_lat -abs(dest.lat)) * pi()/180 / 2),2) + COS(@my_lat * pi()/180 ) * COS(abs(dest.lat) * pi()/180) * POWER(SIN((@my_lng - abs(dest.lng)) * pi()/180 / 2), 2))
) as distance
FROM hotel as dest
having distance < @dist
ORDER BY distance limit 10;
#Also notice that distance are expressed in terms of radius.
there is the class I mentioned in the comment we had with Sean Patrick Floyd : I did it with a peculiar use which needs WeakReference, but you can change it by any object with ease.
Hoping this can help someone someday :)
import java.lang.ref.WeakReference;
import java.util.LinkedList;
import java.util.NoSuchElementException;
import java.util.Queue;
/**
*
* @author leBenj
*/
public class Array2DWeakRefsBuffered<T>
{
private final WeakReference<T>[][] _array;
private final Queue<T> _buffer;
private final int _width;
private final int _height;
private final int _bufferSize;
@SuppressWarnings( "unchecked" )
public Array2DWeakRefsBuffered( int w , int h , int bufferSize )
{
_width = w;
_height = h;
_bufferSize = bufferSize;
_array = new WeakReference[_width][_height];
_buffer = new LinkedList<T>();
}
/**
* Tests the existence of the encapsulated object
* /!\ This DOES NOT ensure that the object will be available on next call !
* @param x
* @param y
* @return
* @throws IndexOutOfBoundsException
*/public boolean exists( int x , int y ) throws IndexOutOfBoundsException
{
if( x >= _width || x < 0 )
{
throw new IndexOutOfBoundsException( "Index out of bounds (get) : [ x = " + x + "]" );
}
if( y >= _height || y < 0 )
{
throw new IndexOutOfBoundsException( "Index out of bounds (get) : [ y = " + y + "]" );
}
if( _array[x][y] != null )
{
T elem = _array[x][y].get();
if( elem != null )
{
return true;
}
}
return false;
}
/**
* Gets the encapsulated object
* @param x
* @param y
* @return
* @throws IndexOutOfBoundsException
* @throws NoSuchElementException
*/
public T get( int x , int y ) throws IndexOutOfBoundsException , NoSuchElementException
{
T retour = null;
if( x >= _width || x < 0 )
{
throw new IndexOutOfBoundsException( "Index out of bounds (get) : [ x = " + x + "]" );
}
if( y >= _height || y < 0 )
{
throw new IndexOutOfBoundsException( "Index out of bounds (get) : [ y = " + y + "]" );
}
if( _array[x][y] != null )
{
retour = _array[x][y].get();
if( retour == null )
{
throw new NoSuchElementException( "Dereferenced WeakReference element at [ " + x + " ; " + y + "]" );
}
}
else
{
throw new NoSuchElementException( "No WeakReference element at [ " + x + " ; " + y + "]" );
}
return retour;
}
/**
* Add/replace an object
* @param o
* @param x
* @param y
* @throws IndexOutOfBoundsException
*/
public void set( T o , int x , int y ) throws IndexOutOfBoundsException
{
if( x >= _width || x < 0 )
{
throw new IndexOutOfBoundsException( "Index out of bounds (set) : [ x = " + x + "]" );
}
if( y >= _height || y < 0 )
{
throw new IndexOutOfBoundsException( "Index out of bounds (set) : [ y = " + y + "]" );
}
_array[x][y] = new WeakReference<T>( o );
// store local "visible" references : avoids deletion, works in FIFO mode
_buffer.add( o );
if(_buffer.size() > _bufferSize)
{
_buffer.poll();
}
}
}
Example of how to use it :
// a 5x5 array, with at most 10 elements "bufferized" -> the last 10 elements will not be taken by GC process
Array2DWeakRefsBuffered<Image> myArray = new Array2DWeakRefsBuffered<Image>(5,5,10);
Image img = myArray.set(anImage,0,0);
if(myArray.exists(3,3))
{
System.out.println("Image at 3,3 is still in memory");
}
git clone
is how you get a local copy of an existing repository to work on. It's usually only used once for a given repository, unless you want to have multiple working copies of it around. (Or want to get a clean copy after messing up your local one...)
git pull
(or git fetch
+ git merge
) is how you update that local copy with new commits from the remote repository. If you are collaborating with others, it is a command that you will run frequently.
As your first example shows, it is possible to emulate git clone
with an assortment of other git commands, but it's not really the case that git pull
is doing "basically the same thing" as git clone
(or vice-versa).
In the case where you need to update the same modal with content from different Ajax / API calls here's a working solution.
$('.btn-action').click(function(){
var url = $(this).data("url");
$.ajax({
url: url,
dataType: 'json',
success: function(res) {
// get the ajax response data
var data = res.body;
// update modal content here
// you may want to format data or
// update other modal elements here too
$('.modal-body').text(data);
// show modal
$('#myModal').modal('show');
},
error:function(request, status, error) {
console.log("ajax call went wrong:" + request.responseText);
}
});
});
charset
I had very special case that the service provider didn't accept charset, and they refuse to change the substructure to allow it... Unfortunately HttpClient was setting the header automatically through StringContent, and no matter if you pass null or Encoding.UTF8, it will always set the charset...
Today i was on the edge to change the sub-system; moving from HttpClient to anything else, that something came to my mind..., why not use reflection to empty out the "charset"? ... And before i even try it, i thought of a way, "maybe I can change it after initialization", and that worked.
Here's how you can set the exact "application/json" header without "; charset=utf-8".
var jsonRequest = JsonSerializeObject(req, options); // Custom function that parse object to string
var stringContent = new StringContent(jsonRequest, Encoding.UTF8, "application/json");
stringContent.Headers.ContentType.CharSet = null;
return stringContent;
Note: The null
value in following won't work, and append "; charset=utf-8"
return new StringContent(jsonRequest, null, "application/json");
@DesertFoxAZ suggests that also the following code can be used and works fine. (didn't test it myself, if it work's rate and credit him in comments)
stringContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
For anyone using Node, I found a nice and simple solution with ES6 imports and the cookie
module!
First install the cookie module (and save as a dependency):
npm install --save cookie
Then import and use:
import cookie from 'cookie';
let parsed = cookie.parse(document.cookie);
if('cookie1' in parsed)
console.log(parsed.cookie1);
Based on the first proposition posted by @Mx. (posted sept.15th 2014) I created a variant to get a decent HTML markup for ARIA support.
$('.slideshow').slick({
slide: 'img',
autoplay: true,
dots: true,
dotsClass: 'custom_paging',
customPaging: function (slider, i) {
//FYI just have a look at the object to find available information
//press f12 to access the console in most browsers
//you could also debug or look in the source
console.log(slider);
var slideNumber = (i + 1),
totalSlides = slider.slideCount;
return '<a class="custom-dot" role="button" title="' + slideNumber + ' of ' + totalSlides + '"><span class="string">' + slideNumber + '</span></a>';
}
});
public static int[] f (final int[] nums, int target) {
int[] r = new int[2];
r[0] = -1;
r[1] = -1;
int[] vIndex = new int[0Xfff];
for (int i = 0; i < nums.length; i++) {
int delta = 0Xff;
int gapIndex = target - nums[i] + delta;
if (vIndex[gapIndex] != 0) {
r[0] = vIndex[gapIndex];
r[1] = i + 1;
return r;
} else {
vIndex[nums[i] + delta] = i + 1;
}
}
return r;
}
EcmaScript 2017 added special functions to string prototype for that. padStart and padEnd are two new methods available in JavaScript string prototype object. As their name implies, they allow for formatting a string by adding padding characters at the start or the end. (Not supported by IE11 and lower)
var mystr = "Doe";
mystr = mystr.padStart('John ');
I would suggest you to try
https://spark.apache.org/docs/latest/sql-programming-guide.html#rdds
JavaRDD<Person> people = sc.textFile("examples/src/main/resources/people.txt").map(
new Function<String, Person>() {
public Person call(String line) throws Exception {
String[] parts = line.split(",");
Person person = new Person();
person.setName(parts[0]);
person.setAge(Integer.parseInt(parts[1].trim()));
return person;
}
});
You have to have a class in this example person with the spec of your file header and associate your data to the schema and apply criteria like in mysql.. to get desired result
This will work even if the url ends with a /
:
var segments = window.location.pathname.split('/');
var toDelete = [];
for (var i = 0; i < segments.length; i++) {
if (segments[i].length < 1) {
toDelete.push(i);
}
}
for (var i = 0; i < toDelete.length; i++) {
segments.splice(i, 1);
}
var filename = segments[segments.length - 1];
console.log(filename);
Try to use anyMatch
of Lambda Expression. It is much better approach.
boolean idExists = tabPane.getTabs().stream()
.anyMatch(t -> t.getId().equals(idToCheck));
Zookeeper is a centralized open-source server for maintaining and managing configuration information, naming conventions and synchronization for distributed cluster environment. Zookeeper helps the distributed systems to reduce their management complexity by providing low latency and high availability. Zookeeper was initially a sub-project for Hadoop but now it's a top level independent project of Apache Software Foundation.
Well, if your phone is rooted you can run commands with the su -c
command.
Here is an example of a cat
command on the build.prop
file to get a phone's product information.
adb shell "su -c 'cat /system/build.prop |grep "product"'"
This invokes root permission and runs the command inside the ' '
.
Notice the 5 end quotes, that is required that you close ALL your end quotes or you will get an error.
For clarification the format is like this.
adb shell "su -c '[your command goes here]'"
Make sure you enter the command EXACTLY the way that you normally would when running it in shell.
A brute force approach:
.gitmodules
file in the supermodule to point to the new submodule url,supermodule/.gitmodules
,.gitmodules
file are reflected in the clone),git submodule update --init path-to-submodule
on the submodule,et voilà! The submodule in the new clone of the supermodule is properly configured!
When building a GET
request, there is no body to the request, but rather everything goes on the URL. To build a URL (and properly percent escaping it), you can also use URLComponents
.
var url = URLComponents(string: "https://www.google.com/search/")!
url.queryItems = [
URLQueryItem(name: "q", value: "War & Peace")
]
The only trick is that most web services need +
character percent escaped (because they'll interpret that as a space character as dictated by the application/x-www-form-urlencoded
specification). But URLComponents
will not percent escape it. Apple contends that +
is a valid character in a query and therefore shouldn't be escaped. Technically, they are correct, that it is allowed in a query of a URI, but it has a special meaning in application/x-www-form-urlencoded
requests and really should not be passed unescaped.
Apple acknowledges that we have to percent escaping the +
characters, but advises that we do it manually:
var url = URLComponents(string: "https://www.wolframalpha.com/input/")!
url.queryItems = [
URLQueryItem(name: "i", value: "1+2")
]
url.percentEncodedQuery = url.percentEncodedQuery?.replacingOccurrences(of: "+", with: "%2B")
This is an inelegant work-around, but it works, and is what Apple advises if your queries may include a +
character and you have a server that interprets them as spaces.
So, combining that with your sendRequest
routine, you end up with something like:
func sendRequest(_ url: String, parameters: [String: String], completion: @escaping ([String: Any]?, Error?) -> Void) {
var components = URLComponents(string: url)!
components.queryItems = parameters.map { (key, value) in
URLQueryItem(name: key, value: value)
}
components.percentEncodedQuery = components.percentEncodedQuery?.replacingOccurrences(of: "+", with: "%2B")
let request = URLRequest(url: components.url!)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, // is there data
let response = response as? HTTPURLResponse, // is there HTTP response
(200 ..< 300) ~= response.statusCode, // is statusCode 2XX
error == nil else { // was there no error, otherwise ...
completion(nil, error)
return
}
let responseObject = (try? JSONSerialization.jsonObject(with: data)) as? [String: Any]
completion(responseObject, nil)
}
task.resume()
}
And you'd call it like:
sendRequest("someurl", parameters: ["foo": "bar"]) { responseObject, error in
guard let responseObject = responseObject, error == nil else {
print(error ?? "Unknown error")
return
}
// use `responseObject` here
}
Personally, I'd use JSONDecoder
nowadays and return a custom struct
rather than a dictionary, but that's not really relevant here. Hopefully this illustrates the basic idea of how to percent encode the parameters into the URL of a GET request.
See previous revision of this answer for Swift 2 and manual percent escaping renditions.
&something
gives you the address of the std::vector
object, not the address of the data it holds. &something.begin()
gives you the address of the iterator returned by begin()
(as the compiler warns, this is not technically allowed because something.begin()
is an rvalue expression, so its address cannot be taken).
Assuming the container has at least one element in it, you need to get the address of the initial element of the container, which you can get via
&something[0]
or &something.front()
(the address of the element at index 0), or
&*something.begin()
(the address of the element pointed to by the iterator returned by begin()
).
In C++11, a new member function was added to std::vector
: data()
. This member function returns the address of the initial element in the container, just like &something.front()
. The advantage of this member function is that it is okay to call it even if the container is empty.
Output needs to be redirected with &>/dev/null
which redirects both stderr and stdout to /dev/null and is a synonym of >/dev/null 2>/dev/null
or >/dev/null 2>&1
.
The best way is to use sh -c '( ( command ) & )'
where command is anything.
ssh askapache 'sh -c "( ( nohup chown -R ask:ask /www/askapache.com &>/dev/null ) & )"'
You can also use nohup directly to launch the shell:
ssh askapache 'nohup sh -c "( ( chown -R ask:ask /www/askapache.com &>/dev/null ) & )"'
Another trick is to use nice to launch the command/shell:
ssh askapache 'nice -n 19 sh -c "( ( nohup chown -R ask:ask /www/askapache.com &>/dev/null ) & )"'
You need to add a name
attribute.
Since this is a multiple select, at the HTTP level, the client just sends multiple name/value pairs with the same name, you can observe this yourself if you use a form with method="GET": someurl?something=1&something=2&something=3
.
In the case of PHP, Ruby, and some other library/frameworks out there, you would need to add square braces ([]
) at the end of the name. The frameworks will parse that string and wil present it in some easy to use format, like an array.
Apart from manually parsing the request there's no language/framework/library-agnostic way of accessing multiple values, because they all have different APIs
For PHP you can use:
<select name="something[]" id="inscompSelected" multiple="multiple" class="lstSelected">
According to the flask.Request.args documents.
flask.Request.args
A MultiDict with the parsed contents of the query string. (The part in the URL after the question mark).
So the args.get()
is method get()
for MultiDict, whose prototype is as follows:
get(key, default=None, type=None)
Update:
In newer version of flask (v1.0.x and v1.1.x), flask.Request.args
is an ImmutableMultiDict
(an immutable MultiDict
), so the prototype and specific method above is still valid.
The dynamic way of implement whereNotIn:
$users = User::where('status',0)->get();
foreach ($users as $user) {
$data[] = $user->id;
}
$available = User::orderBy('name', 'DEC')->whereNotIn('id', $data)->get();
Within your component, you can define an array of number (ES6) as described below:
export class SampleComponent {
constructor() {
this.numbers = Array(5).fill(0).map((x,i)=>i);
}
}
See this link for the array creation: Tersest way to create an array of integers from 1..20 in JavaScript.
You can then iterate over this array with ngFor
:
@View({
template: `
<ul>
<li *ngFor="let number of numbers">{{number}}</li>
</ul>
`
})
export class SampleComponent {
(...)
}
Or shortly:
@View({
template: `
<ul>
<li *ngFor="let number of [0,1,2,3,4]">{{number}}</li>
</ul>
`
})
export class SampleComponent {
(...)
}
Hope it helps you, Thierry
Edit: Fixed the fill statement and template syntax.
in appdelegate :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[_window rootViewController]setModalPresentationStyle:UIModalPresentationCurrentContext];
return YES;
}
in you first view controller from where you have to load next view:
NextViewController *customvc = [[NextViewController alloc]init];
[self presentViewController:customvc animated:YES completion:^{
}];
in your nextViewController which is to be added transparent:
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor clearColor];
UIView* backView = [[UIView alloc] initWithFrame:self.view.frame];
backView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.6];
[self.view insertSubview:backView atIndex:0];
}
There are indeed C# compilers for Android available. Even though I prefer developing Android Apps in Java, I can recommend MonoForAndroid. You find more information on http://xamarin.com/monoforandroid
This is working as intended, notification messages are delivered to your onMessageReceived callback only when your app is in the foreground. If your app is in the background or closed then a notification message is shown in the notification center, and any data from that message is passed to the intent that is launched as a result of the user tapping on the notification.
You can specify a click_action to indicate the intent that should be launched when the notification is tapped by the user. The main activity is used if no click_action is specified.
When the intent is launched you can use the
getIntent().getExtras();
to retrieve a Set that would include any data sent along with the notification message.
For more on notification message see docs.
Set up a virtualenv:
% curl -kLso /tmp/get-pip.py https://bootstrap.pypa.io/get-pip.py
% sudo python /tmp/get-pip.py
These commands install pip into the global site-packages directory.
% sudo pip install virtualenv
and ditto for virtualenv:
% mkdir -p ~/.virtualenvs
I like my virtualenvs under one tree in my home directory called .virtualenvs
% virtualenv ~/.virtualenvs/lxmltest
Creates a virtualenv.
% . ~/.virtualenvs/lxmltest/bin/activate
Removes the need to specify the full path to pip/python in this virtualenv.
% pip install lxml
Alternatively execute ~/.virtualenvs/lxmltest/bin/pip install lxml
if you chose not to follow the previous step. Note, I'm not sure how far along you are, so some of these steps can be safely skipped. Of course, if you mess something up, you can always rm -Rf ~/.virtualenvs/lxmltest
and start again from a new virtualenv.
UPDATE
The bookmarklet hack below is broken due to XHR issues and API changes.
Thankfully Github now has "A Whole New Code Search" which does the job superbly.
Checkout this voodoo: Github code search userscript.
Follow the directions there, or if you hate bloating your browser with scripts and extensions, use my bookmarkified bundle of the userscript:
javascript:(function(){var s='https://raw.githubusercontent.com/skratchdot/github-enhancement-suite/master/build/github-enhancement-suite.user.js',t='text/javascript',d=document,n=navigator,e;(e=d.createElement('script')).src=s;e.type=t;d.getElementsByTagName('head')[0].appendChild(e)})();doIt('');void('');
Save the source above as the URL of a new bookmark. Browse to any Github repo, click the bookmark, and bam: in-page, ajaxified code search.
CAVEAT Github must index a repo before you can search it.
Abracadabra...
Here's a sample search from the annotated ECMAScript 5.1 specification repository:
The explanation from Scott Meyers in Effective C++ might help understand when to use them:
Public inheritance should model "is-a relationship," whereas private inheritance should be used for "is-implemented-in-terms-of" - so you don't have to adhere to the interface of the superclass, you're just reusing the implementation.
MySQL does allow NULL
values for datetime
fields. I just tested it:
mysql> create table datetimetest (testcolumn datetime null default null);
Query OK, 0 rows affected (0.10 sec)
mysql> insert into datetimetest (testcolumn) values (null);
Query OK, 1 row affected (0.00 sec)
mysql> select * from datetimetest;
+------------+
| testcolumn |
+------------+
| NULL |
+------------+
1 row in set (0.00 sec)
I'm using this version:
mysql> select version();
+-----------+
| version() |
+-----------+
| 5.0.45 |
+-----------+
1 row in set (0.03 sec)
EDIT #1: I see in your edit that the error message you are getting in PHP indicates that you are passing an empty string (i.e. ''
), not null
. An empty string is different than null
and is not a valid datetime
value which is why you are getting that error message. You must pass the special sql keyword null
if that's what you mean. Also, don't put any quotes around the word null
. See my insert
statement above for an example of how to insert null
.
EDIT #2: Are you using PDO? If so, when you bind your null param, make sure to use the [PDO::PARAM_NULL][1]
type when binding a null
. See the answer to this stackoverflow question on how to properly insert null
using PDO.
From docs TWIG docs:
Unlike in PHP, it's not possible to break or continue in a loop.
But still:
You can however filter the sequence during iteration which allows you to skip items.
Example 1 (for huge lists you can filter posts using slice, slice(start, length)
):
{% for post in posts|slice(0,10) %}
<h2>{{ post.heading }}</h2>
{% endfor %}
Example 2:
{% for post in posts if post.id < 10 %}
<h2>{{ post.heading }}</h2>
{% endfor %}
You can even use own TWIG filters for more complexed conditions, like:
{% for post in posts|onlySuperPosts %}
<h2>{{ post.heading }}</h2>
{% endfor %}
$ seq 4
1
2
3
4
$ seq 2 5
2
3
4
5
$ seq 4 2 12
4
6
8
10
12
$ seq -w 4 2 12
04
06
08
10
12
$ seq -s, 4 2 12
4,6,8,10,12
Here are two methods, one sweet and simple(and conceptual), the other more formal and can be extended in a variety of situations, after having read a dataset.
Method 1: Conceptual
X2=[]
X1=[1,2,3]
X2.append(X1)
X3=[4,5,6]
X2.append(X3)
X2 thus has [[1,2,3],[4,5,6]] ie a list of lists.
Method 2 : Formal and extensible
Another elegant way to store a list as a list of lists of different numbers - which it reads from a file. (The file here has the dataset train) Train is a data-set with say 50 rows and 20 columns. ie. Train[0] gives me the 1st row of a csv file, train[1] gives me the 2nd row and so on. I am interested in separating the dataset with 50 rows as one list, except the column 0 , which is my explained variable here, so must be removed from the orignal train dataset, and then scaling up list after list- ie a list of a list. Here's the code that does that.
Note that I am reading from "1" in the inner loop since I am interested in explanatory variables only. And I re-initialize X1=[] in the other loop, else the X2.append([0:(len(train[0])-1)]) will rewrite X1 over and over again - besides it more memory efficient.
X2=[]
for j in range(0,len(train)):
X1=[]
for k in range(1,len(train[0])):
txt2=train[j][k]
X1.append(txt2)
X2.append(X1[0:(len(train[0])-1)])
You need to fetch the data from each row of the resultset obtained from the query. You can use mysql_fetch_array()
for this.
// Process all rows
while($row = mysql_fetch_array($result)) {
echo $row['column_name']; // Print a single column data
echo print_r($row); // Print the entire row data
}
Change your code to this :
require_once('db.php');
$sql="SELECT * FROM modul1open WHERE idM1O>=(SELECT FLOOR( MAX( idM1O ) * RAND( ) ) FROM modul1open)
ORDER BY idM1O LIMIT 1"
$result = mysql_query($sql);
while($row = mysql_fetch_array($result)) {
echo $row['fieldname'];
}
I have set OnGroupExpandListener and override onGroupExpand() as:
and use setSelectionFromTop() method which Sets the selected item and positions the selection y pixels from the top edge of the ListView. (If in touch mode, the item will not be selected but it will still be positioned appropriately.) (android docs)
yourlist.setOnGroupExpandListener (new ExpandableListView.OnGroupExpandListener()
{
@Override
public void onGroupExpand(int groupPosition) {
expList.setSelectionFromTop(groupPosition, 0);
//your other code
}
});
It's a few less clicks in VS2017, and if the local repo is ahead of the Git clone, click Source control from the pop-up project menu:
This brings up the Team Explorer Changes dialog:
Type in a description- here it's "Stack Overflow Example Commit".
Make a choice of the three options on offer, all of which are explained here.
Not CSS, but inline:
<a href="#"
onmouseover = "this.style.textDecoration = 'none'"
onmouseout = "this.style.textDecoration = 'underline'">Hello</a>
I wasted a lot of time on taking screenshot and I want to save yours. I have used chrome + selenium + c# the result was totally horrible. Finally i wrote a function :
driver.Manage().Window.Maximize();
RemoteWebElement remElement = (RemoteWebElement)driver.FindElement(By.Id("submit-button"));
Point location = remElement.LocationOnScreenOnceScrolledIntoView;
int viewportWidth = Convert.ToInt32(((IJavaScriptExecutor)driver).ExecuteScript("return document.documentElement.clientWidth"));
int viewportHeight = Convert.ToInt32(((IJavaScriptExecutor)driver).ExecuteScript("return document.documentElement.clientHeight"));
driver.SwitchTo();
int elementLocation_X = location.X;
int elementLocation_Y = location.Y;
IWebElement img = driver.FindElement(By.Id("submit-button"));
int elementSize_Width = img.Size.Width;
int elementSize_Height = img.Size.Height;
Size s = new Size();
s.Width = driver.Manage().Window.Size.Width;
s.Height = driver.Manage().Window.Size.Height;
Bitmap bitmap = new Bitmap(s.Width, s.Height);
Graphics graphics = Graphics.FromImage(bitmap as Image);
graphics.CopyFromScreen(0, 0, 0, 0, s);
bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
RectangleF part = new RectangleF(elementLocation_X, elementLocation_Y + (s.Height - viewportHeight), elementSize_Width, elementSize_Height);
Bitmap bmpobj = (Bitmap)Image.FromFile(filePath);
Bitmap bn = bmpobj.Clone(part, bmpobj.PixelFormat);
bn.Save(finalPictureFilePath, System.Drawing.Imaging.ImageFormat.Png);
Edited on 2014/8/25: Here was where I forked it.
Thanks @anvarik.
Here is the JSFiddle. I forgot where I forked this. But this is a good example showing you the difference between = and @
<div ng-controller="MyCtrl">
<h2>Parent Scope</h2>
<input ng-model="foo"> <i>// Update to see how parent scope interacts with component scope</i>
<br><br>
<!-- attribute-foo binds to a DOM attribute which is always
a string. That is why we are wrapping it in curly braces so
that it can be interpolated. -->
<my-component attribute-foo="{{foo}}" binding-foo="foo"
isolated-expression-foo="updateFoo(newFoo)" >
<h2>Attribute</h2>
<div>
<strong>get:</strong> {{isolatedAttributeFoo}}
</div>
<div>
<strong>set:</strong> <input ng-model="isolatedAttributeFoo">
<i>// This does not update the parent scope.</i>
</div>
<h2>Binding</h2>
<div>
<strong>get:</strong> {{isolatedBindingFoo}}
</div>
<div>
<strong>set:</strong> <input ng-model="isolatedBindingFoo">
<i>// This does update the parent scope.</i>
</div>
<h2>Expression</h2>
<div>
<input ng-model="isolatedFoo">
<button class="btn" ng-click="isolatedExpressionFoo({newFoo:isolatedFoo})">Submit</button>
<i>// And this calls a function on the parent scope.</i>
</div>
</my-component>
</div>
var myModule = angular.module('myModule', [])
.directive('myComponent', function () {
return {
restrict:'E',
scope:{
/* NOTE: Normally I would set my attributes and bindings
to be the same name but I wanted to delineate between
parent and isolated scope. */
isolatedAttributeFoo:'@attributeFoo',
isolatedBindingFoo:'=bindingFoo',
isolatedExpressionFoo:'&'
}
};
})
.controller('MyCtrl', ['$scope', function ($scope) {
$scope.foo = 'Hello!';
$scope.updateFoo = function (newFoo) {
$scope.foo = newFoo;
}
}]);
From Api level 1, you can use the public void setTextSize (float size)
method.
From the documentation:
Set the default text size to the given value, interpreted as "scaled pixel" units. This size is adjusted based on the current density and user font size preference.
Parameters: size -> float: The scaled pixel size.
So you can simple do:
textView.setTextSize(12); // your size in sp
You can use the RegExp object:
var regexstring = "whatever";
var regexp = new RegExp(regexstring, "gi");
var str = "whateverTest";
var str2 = str.replace(regexp, "other");
document.write(str2);
Then you can construct regexstring
in any way you want.
You can read more about it here.
Switch to the branch from which you created the pull request:
$ git checkout pull-request-branch
Overwrite the modified file(s) with the file in another branch, let's consider it's master:
git checkout origin/master -- src/main/java/HelloWorld.java
Commit and push it to the remote:
git commit -m "Removed a modified file from pull request"
git push origin pull-request-branch
Actually you can do this.
$state.go("state-name", {param-name: param-value}, {location: false, inherit: false});
This is the official documentation about options in state.go
Everything is described there and as you can see this is the way to be done.
Using the Windows Command Prompt you can increase the buffer size of the window as much you want to see the number of columns. This depends on the no of columns in the table.
Once I ran into a similar error. Let me describe it.
Edit.js
// components returns edit form
function EditVideo({id}) {
.....
// onChange event listener
const handleChange = (e) => {
setTextData({
...textData,
[e.target.name]: e.target.value.trim()
});
}
....
...
}
)
ImportEdit.js
import Edit from './Edit';
function ImportEdit() {
......
...
return (
<div>
<EditVideo id={id}/>
</div>
)
}
export default ImportEdit
The Problem was: I was unable to use spacebar (i.e. if i press spacekey, i didn't see space input)
The Bug: .trim()
.trim() method was trimming all the white space i typed
Note: Edit.js worked fine when used sepeartely without import
I was looking for something similar myself, preferably without using a library or sorting the entire list. My solution ended up similar to the question itself, just simplified a bit.
var firstBorn = People.FirstOrDefault(p => p.DateOfBirth == People.Min(p2 => p2.DateOfBirth));
$configValue = Mage::getStoreConfig('sectionName/groupName/fieldName');
sectionName, groupName and fieldName are present in etc/system.xml file of your module.
The above code will automatically fetch config value of currently viewed store.
If you want to fetch config value of any other store than the currently viewed store then you can specify store ID as the second parameter to the getStoreConfig
function as below:
$store = Mage::app()->getStore(); // store info
$configValue = Mage::getStoreConfig('sectionName/groupName/fieldName', $store);
//the following code checks if your radio button having name like 'yourRadioName'
//is checked or not
$(document).ready(function() {
if($("input:radio[name='yourRadioName']").is(":checked")) {
//its checked
}
});
"I'm sure there is a certified, efficient way to do it (Apache Commons?)"
yes, apparenty it's
StringUtils.join(array, separator)
Instead of using
response.sendRedirect("/demo.jsp");
Which does a permanent redirect to an absolute URL path,
Rather use RequestDispatcher
. Example:
RequestDispatcher dispatcher = request.getRequestDispatcher("demo.jsp");
dispatcher.forward(request, response);
I have Python 2.7.5, MySQL 5.6 and CentOS 7.1.1503.
For me it worked with the following command:
# pip install mysql-python
Note pre-requisites here:
Install Python pip:
# rpm -iUvh http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
# yum -y update
Reboot the machine (if kernel is also updated)
# yum -y install python-pip
Install Python devel packages:
# yum install python-devel
Install MySQL devel packages:
# yum install mysql-devel
When you use setcookie
, you can either set the expiration time to 0
or simply omit the parametre - the cookie will then expire at the end of session (ie, when you close the browser).
You just need to change the table names as per the error in - /etc/phpmyadmin/config.inc.php
$ Cfg ['Servers'] [$ i] ['table_uiprefs'] = ‘pma_table_uiprefs’;
to
$ Cfg ['Servers'] [$ i] ['table_uiprefs'] = ‘pma__table_uiprefs’;
assign the table names accordingly and everything will be fine.
For me,sudo dpkg-reconfigure phpmyadmin
caused more trouble when I chose the option to re-install the database
Here's one approach. Using a combination of the answers above do the following:
As a formula, just use the example below with <> replaced with your range reference.
=SUM(IF(ISERROR(DATEVALUE(TEXT(<<RANGE HERE>>, "MM/dd/yyyy"))), 0, 1))
You must enter this as an array formula with CTRL + SHIFT + ENTER.
CSS only (no icon sets) Codepen
.nav-link #navBars {_x000D_
margin-top: -3px;_x000D_
padding: 8px 15px 3px;_x000D_
border: 1px solid rgba(0,0,0,.125);_x000D_
border-radius: .25rem;_x000D_
}_x000D_
_x000D_
.nav-link #navBars input {_x000D_
display: none;_x000D_
}_x000D_
_x000D_
.nav-link #navBars span {_x000D_
position: relative;_x000D_
z-index: 1;_x000D_
display: block;_x000D_
margin-bottom: 6px;_x000D_
width: 24px;_x000D_
height: 2px;_x000D_
background-color: rgba(125, 125, 126, 1);_x000D_
border-radius: .25rem;_x000D_
}
_x000D_
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet"/>_x000D_
<nav class="navbar navbar-expand-lg navbar-light bg-light">_x000D_
<!-- <a class="navbar-brand" href="#">_x000D_
<img src="https://getbootstrap.com/docs/4.0/assets/brand/bootstrap-solid.svg" width="30" height="30" class="d-inline-block align-top" alt="">_x000D_
Bootstrap_x000D_
</a> -->_x000D_
<!-- https://stackoverflow.com/questions/26317679 -->_x000D_
<a class="nav-link" href="#">_x000D_
<div id="navBars">_x000D_
<input type="checkbox" /><span></span>_x000D_
<span></span>_x000D_
<span></span>_x000D_
</div>_x000D_
</a>_x000D_
<!-- /26317679 -->_x000D_
<div class="collapse navbar-collapse" id="navbarNav">_x000D_
<ul class="navbar-nav">_x000D_
<li class="nav-item active"><a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a></li>_x000D_
<li class="nav-item"><a class="nav-link" href="#">Features</a></li>_x000D_
<li class="nav-item"><a class="nav-link" href="#">Pricing</a></li>_x000D_
<li class="nav-item"><a class="nav-link disabled" href="#">Disabled</a></li>_x000D_
</ul>_x000D_
</div>_x000D_
</nav>
_x000D_
There are workarounds but no clean/short/sweet way to do it with streams and to be honest, you would probably be better off with:
int idx = 0;
for (Param p : params) query.bind(idx++, p);
Or the older style:
for (int idx = 0; idx < params.size(); idx++) query.bind(idx, params.get(idx));
numpy has a great tool for this task ("numpy.reshape") link to reshape documentation
a = [[ 0 1]
[ 2 3]
[ 4 5]
[ 6 7]
[ 8 9]
[10 11]
[12 13]
[14 15]
[16 17]]
`numpy.reshape(a,(3,3))`
you can also use the "-1" trick
`a = a.reshape(-1,3)`
the "-1" is a wild card that will let the numpy algorithm decide on the number to input when the second dimension is 3
so yes.. this would also work:
a = a.reshape(3,-1)
and this:
a = a.reshape(-1,2)
would do nothing
and this:
a = a.reshape(-1,9)
would change the shape to (2,9)
For anyone facing this issue and ending up on this post...the issue is still open - https://github.com/moby/moby/issues/11185
I had to move the folders inside a folder named "default" to the android-## folder so Eclipse could see the images.
import Foundation
var string = NSString(data: NSData?, encoding: UInt)
If you are using just code like this below, you must put just a grave accent at the end of line `
.
docker run -d --name rabbitmq ` -p 5672:5672 ` -p 15672:15672 ` --restart=always ` --hostname rabbitmq-master ` -v c:\docker\rabbitmq\data:/var/lib/rabbitmq ` rabbitmq:latest
Long story short, unless len(l1 + l2) ~ 1000000
use:
L = l1 + l2
L.sort()
Description of the figure and source code can be found here.
The figure was generated by the following command:
$ python make-figures.py --nsublists 2 --maxn=0x100000 -s merge_funcs.merge_26 -s merge_funcs.sort_builtin
Passive event listeners are an emerging web standard, new feature shipped in Chrome 51 that provide a major potential boost to scroll performance. Chrome Release Notes.
It enables developers to opt-in to better scroll performance by eliminating the need for scrolling to block on touch and wheel event listeners.
Problem: All modern browsers have a threaded scrolling feature to permit scrolling to run smoothly even when expensive JavaScript is running, but this optimization is partially defeated by the need to wait for the results of any touchstart
and touchmove
handlers, which may prevent the scroll entirely by calling preventDefault()
on the event.
Solution: {passive: true}
By marking a touch or wheel listener as passive, the developer is promising the handler won't call preventDefault
to disable scrolling. This frees the browser up to respond to scrolling immediately without waiting for JavaScript, thus ensuring a reliably smooth scrolling experience for the user
.
document.addEventListener("touchstart", function(e) {
console.log(e.defaultPrevented); // will be false
e.preventDefault(); // does nothing since the listener is passive
console.log(e.defaultPrevented); // still false
}, Modernizr.passiveeventlisteners ? {passive: true} : false);
Permanent:
UPDATE
MyTable
SET
MyColumn = UPPER(MyColumn)
Temporary:
SELECT
UPPER(MyColumn) AS MyColumn
FROM
MyTable
Xamarin Forms Android:
//---------------------------------------------------------
public void OpenSettings()
//---------------------------------------------------------
{
var intent = new Intent(Android.Provider.Settings.ActionApplicationDetailsSettings,
Android.Net.Uri.Parse("package:" + Forms.Context.PackageName));
Forms.Context.StartActivity(intent);
}
TimeSpan.FromTicks(28000000000).TotalMinutes;
So I do in Windows 10 and Python 3.7.1 (tested):
import subprocess
Quellpfad = r"C:\Users\MeMySelfAndI\Desktop"
Quelldatei = r"\a.bat"
Quelle = Quellpfad + Quelldatei
print(Quelle)
subprocess.call(Quelle)
If no other process is using the port 8080, Eventhough eclipse shows the port 8080 is used while starting the server in eclipse, first you have to stop the server by hitting the stop button in "Configure Tomcat"(which you can find in your start menu under tomcat folder), then try to start the server in eclipse then it will be started.
If any other process is using the port 8080 and as well as you no need to disturb it. then you can change the port.
Do you mean why doesn't the language support multithreading or why don't JavaScript engines in browsers support multithreading?
The answer to the first question is that JavaScript in the browser is meant to be run in a sandbox and in a machine/OS-independent way, to add multithreading support would complicate the language and tie the language too closely to the OS.
You can also add which user will run the nginx. In the nginx.conf file, make the following changes:
user root;
You can add the above line as the first line in your nginx conf. You can write the name of any user who has the permission to write in that directory.
To improve on the answer provided by @artofwarfare, here is what I consider a neater way to check for the message
attribute and print it or print the Exception
object as a fallback.
try:
pass
except Exception as e:
print getattr(e, 'message', repr(e))
The call to repr
is optional, but I find it necessary in some use cases.
Update #1:
Following the comment by @MadPhysicist, here's a proof of why the call to repr
might be necessary. Try running the following code in your interpreter:
try:
raise Exception
except Exception as e:
print(getattr(e, 'message', repr(e)))
print(getattr(e, 'message', str(e)))
Update #2:
Here is a demo with specifics for Python 2.7 and 3.5: https://gist.github.com/takwas/3b7a6edddef783f2abddffda1439f533
There are two options:
A: You care about retaining array order:
a = append(a[:i], a[i+1:]...)
// or
a = a[:i+copy(a[i:], a[i+1:])]
B: You don't care about retaining order (this is probably faster):
a[i] = a[len(a)-1] // Replace it with the last one. CAREFUL only works if you have enough elements.
a = a[:len(a)-1] // Chop off the last one.
See the link to see implications re memory leaks if your array is of pointers.
As environments are inherited from the parent process, you could write an add-in for Visual Studio that modifies its environment variables before you perform the start. I am not sure how easy that would be to put into your process.
In MySQL -> INT(10) does not mean a 10-digit number, it means an integer with a display width of 10 digits. The maximum value for an INT in MySQL is 2147483647 (or 4294967295 if unsigned).
You can use a BIGINT instead of INT to store it as a numeric. Using BIGINT will save you 3 bytes per row over VARCHAR(10).
If you want to Store "Country + area + number separately". Try using a VARCHAR(20). This allows you the ability to store international phone numbers properly, should that need arise.
this will also work
data.groupby(data['date'].dt.year)
In case someone else finds this topic while using localhost
in the file URIs - Internet Explorer acts completely different if the host name is localhost
or 127.0.0.1
- if you use the actual hostname, it works fine (from trusted sites/intranet zone).
Another big difference between IE and FF - IE is fine with uris like file://server/share/file.txt
but FF requires additional slashes file:////server/share/file.txt
.
I Hope this code is beneficial for you
public class Register extends Activity
{
EditText FirstName, PhoneNo, EmailId,weight;
Button Register;
private static final Pattern EMAIL_PATTERN = Pattern
.compile("^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$");
private static final Pattern USERFIRSTNAME_PATTERN = Pattern
.compile("[a-zA-Z0-9]{1,250}");
private static final Pattern PHONE_PATTERN = Pattern
.compile("[a-zA-Z0-9]{1,250}");
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
Register=(Button) findViewById(R.id.register);
FirstName=(EditText)findViewById(R.id.person_firstname);
PhoneNo =(EditText)findViewById(R.id.phone_no);
EmailId=(EditText)findViewById(R.id.email_id);
weight=(EditText) findViewById(R.id.weight);
Register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sFirstName= FirstName.getText().toString();
sPhoneNo= PhoneNo.getText().toString();
sEmailId= EmailId.getText().toString();
sweight= weight.getText().toString();
if(sFirstName.equals("")||sPhoneNo.equals("")||sEmailId.equals("")||sweight.equals(""))
{
if ((!CheckUsername(sFirstName)))
{
Toast.makeText(Register.this, "FirstName can not be null",Toast.LENGTH_LONG).show();
}
else if ((!Checkphoneno(sPhoneNo)))
{
Toast.makeText(Register.this, "ENTER VALID mobile no ",Toast.LENGTH_LONG).show();
}
else if ((!CheckEmail(sEmailId)))
{
Toast.makeText(Register.this, "ENTER VALID EMAIL ID",Toast.LENGTH_LONG).show();
}
else if ((!Checkweight(sweight)))
{
Toast.makeText(Register.this, "ENTER Weight in kg",Toast.LENGTH_LONG).show();
}
}
}
private boolean CheckEmail(String sEmailId) {
return EMAIL_PATTERN.matcher(sEmailId).matches();
}
private boolean CheckUsername(String sFirstName) {
return USERFIRSTNAME_PATTERN.matcher(sFirstName).matches();
}
private boolean Checkphoneno(String sPhoneNo) {
return PHONE_PATTERN.matcher(sPhoneNo).matches();
}
private boolean Checkweight(String sweight) {
return Weight_PATTERN.matcher(sweight).matches();
}
});
On my 10.6 system:
vhosts folder:
owner:root
group:wheel
permissions:755
vhost.conf files:
owner:root
group:wheel
permissions:644
appendChild()
is a more native way:
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'script.js';
document.head.appendChild(script);
I answer this coming from a component-based architecture, where an organisation may be running many components that may rely on each other. During a propagating failure, logging levels should help to identify both which components are affected and which are a root cause.
ERROR - This component has had a failure and the cause is believed to be internal (any internal, unhandled exception, failure of encapsulated dependency... e.g. database, REST example would be it has received a 4xx error from a dependency). Get me (maintainer of this component) out of bed.
WARN - This component has had a failure believed to be caused by a dependent component (REST example would be a 5xx status from a dependency). Get the maintainers of THAT component out of bed.
INFO - Anything else that we want to get to an operator. If you decide to log happy paths then I recommend limiting to 1 log message per significant operation (e.g. per incoming http request).
For all log messages be sure to log useful context (and prioritise on making messages human readable/useful rather than having reams of "error codes")
A nice way to visualise the above logging levels is to imagine a set of monitoring screens for each component. When all running well they are green, if a component logs a WARNING then it will go orange (amber) if anything logs an ERROR then it will go red.
In the event of an incident you should have one (root cause) component go red and all the affected components should go orange/amber.
I think you can use db.collection.distinct(fields,query)
You will be able to get the distinct values in your case for NetworkID.
It should be something like this :
Db.collection.distinct('NetworkID')
To animate layout changes, you can add the following attribute to your LinearLayout
android:animateLayoutChanges="true"
and it will animate changes automatically for you.
For information, if android:animateLayoutChanges="true"
is used, then custom animation via anim xml will not work.
Use reverse(...)
methods of java.util.Collections
class. Pass your list as a parameter and your list will get reversed.
Collections.reverse(list);
The cleanest way to work with it. Assuming your table is a list of integers called "dbo.tvp_Int" (Customize for your own table type)
Create this extension method...
public static void AddWithValue_Tvp_Int(this SqlParameterCollection paramCollection, string parameterName, List<int> data)
{
if(paramCollection != null)
{
var p = paramCollection.Add(parameterName, SqlDbType.Structured);
p.TypeName = "dbo.tvp_Int";
DataTable _dt = new DataTable() {Columns = {"Value"}};
data.ForEach(value => _dt.Rows.Add(value));
p.Value = _dt;
}
}
Now you can add a table valued parameter in one line anywhere simply by doing this:
cmd.Parameters.AddWithValueFor_Tvp_Int("@IDValues", listOfIds);
I think it's a little simpler to use the dplyr
functions select
and left_join
; at least it's easier for me to understand. The join function from dplyr
are made to mimic sql arguments.
library(tidyverse)
DF2 <- DF2 %>%
select(client, LO)
joined_data <- left_join(DF1, DF2, by = "Client")
You don't actually need to use the "by" argument in this case because the columns have the same name.
lets say you want to install scipy,
Here is the code to install it
!pip install scipy
As of year 2020, JetBrains suggests to commit the .idea
folder.
The JetBrains IDEs (webstorm, intellij, android studio, pycharm, clion, etc.) automatically add that folder to your git repository (if there's one).
Inside the folder .idea
, has been already created a .gitignore
, updated by the IDE itself to avoid to commit user related settings that may contains privacy/password data.
It is safe (and usually useful) to commit the .idea
folder.
I know that this is super-duper old, but on the off chance that someone comes looking for this, as of Visual Basic 14, Vb supports interpolation. Sooooo cool!
Example:
SQLQueryString = $"
Insert into Employee values(
{txtEmployeeNo},
{txtContractsStartDate},
{txtSeatNo},
{txtFloor},
{txtLeaves}
)"
It works. Documentation Here
Edit: After writing this, I realized that the OP was talking about VBA. This will not work in VBA!!! However, I will leave this up here, because as someone new to VB, I stumbled upon this question looking for a solution to just this problem in VB.net. If this helps someone else, great.
If you are using JQuery Google map plug-in then below code will work for you -
var markers = $('#map_canvas').gmap('get','markers');
I couldn't find an answer with Swift 3 implementation. So here it goes.
static func screenshotOf(window: UIWindow) -> UIImage? {
UIGraphicsBeginImageContextWithOptions(window.bounds.size, true, UIScreen.main.scale)
guard let currentContext = UIGraphicsGetCurrentContext() else {
return nil
}
window.layer.render(in: currentContext)
guard let image = UIGraphicsGetImageFromCurrentImageContext() else {
UIGraphicsEndImageContext()
return nil
}
UIGraphicsEndImageContext()
return image
}
Perhaps involve the activity's life-cycle methods to achieve this:
Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
handler.post(sendData);
}
@Override
protected void onDestroy() {
super.onDestroy();
handler.removeCallbacks(sendData);
}
private final Runnable sendData = new Runnable(){
public void run(){
try {
//prepare and send the data here..
handler.postDelayed(this, 1000);
}
catch (Exception e) {
e.printStackTrace();
}
}
};
In this approach, if you press back-key on your activity or call finish();
, it will also stop the postDelayed callings.
Unit Testing - As the name suggests, this method tests at the object level. Individual software components are tested for any errors. Knowledge of the program is needed for this test and the test codes are created to check if the software behaves as it is intended to.
Functional Testing - Is carried out without any knowledge of the internal working of the system. The tester will try to use the system by just following requirements, by providing different inputs and testing the generated outputs. This test is also known as closed-box testing or black-box.
Acceptance Testing - This is the last test that is conducted before the software is handed over to the client. It is carried out to ensure that the developed software meets all the customer requirements. There are two types of acceptance testing - one that is carried out by the members of the development team, known as internal acceptance testing (Alpha testing), and the other that is carried out by the customer or end user known as (Beta testing)
Integration Testing - Individual modules that are already subjected to unit testing are integrated with one another. Generally the two approachs are followed :
1) Top-Down
2) Bottom-Up
There is an important detail:
set PATH="C:\linutils;C:\wingit\bin;%PATH%"
does not work, while
set PATH=C:\linutils;C:\wingit\bin;%PATH%
works. The difference is the quotes!
UPD also see the comment by venimus
All .idea files that are explicitly ignored are still showing up to commit
you have to remove them from the staging area
git rm --cached .idea
now you have to commit those changes and they will be ignored from this point on.
Once git start to track changes it will not "stop" tracking them even if they were added to the .gitignore
file later on.
You must explicitly remove them and then commit your removal manually in order to fully ignore them.
I don't have a complete answer to this, but I have determined some things by playing with a test project:
xunit.runner.aspnet : 2.0.0-aspnet-beta4
that appears to be part of the official beta4 aspnet5 release does not work in Visual Studio."xunit": "2.1.0-*"
and "xunit-runner.dnx": "2.1.0-*"
packages DO work in Visual Studio.This is current as per VS 2015 CTP 6, using the beta4 releases, not the dailies.
To do this without relying on any GNUisms such as -i
without a parameter or c
without a linebreak:
sed '/TEXT_TO_BE_REPLACED/c\
This line is removed by the admin.
' infile > tmpfile && mv tmpfile infile
In this (POSIX compliant) form of the command
c\
text
text
can consist of one or multiple lines, and linebreaks that should become part of the replacement have to be escaped:
c\
line1\
line2
s/x/y/
where s/x/y/
is a new sed command after the pattern space has been replaced by the two lines
line1
line2
Here is a simple example taken from 'Modern C++ Design - Generic Programming and Design Patterns Applied' by Andrei Alexandrescu:
He uses a classes with template template parameters in order to implement the policy pattern:
// Library code
template <template <class> class CreationPolicy>
class WidgetManager : public CreationPolicy<Widget>
{
...
};
He explains: Typically, the host class already knows, or can easily deduce, the template argument of the policy class. In the example above, WidgetManager always manages objects of type Widget, so requiring the user to specify Widget again in the instantiation of CreationPolicy is redundant and potentially dangerous.In this case, library code can use template template parameters for specifying policies.
The effect is that the client code can use 'WidgetManager' in a more elegant way:
typedef WidgetManager<MyCreationPolicy> MyWidgetMgr;
Instead of the more cumbersome, and error prone way that a definition lacking template template arguments would have required:
typedef WidgetManager< MyCreationPolicy<Widget> > MyWidgetMgr;
if var == 'stringone' or var == 'stringtwo':
do_something()
or more pythonic,
if var in ['string one', 'string two']:
do_something()
Elaborateling slighty on the nice answer by Jon Skeet, this could be versatile:
public static IEnumerable<T> Directional<T>(this IList<T> items, bool Forwards) {
if (Forwards) foreach (T item in items) yield return item;
else for (int i = items.Count-1; 0<=i; i--) yield return items[i];
}
And then use as
foreach (var item in myList.Directional(forwardsCondition)) {
.
.
}
Encryption has not only cpu, but also some network overhead.
Try this, just an example:
u.UserTypeOptions = new SelectList(new[]
{
new { ID="1", Name="name1" },
new { ID="2", Name="name2" },
new { ID="3", Name="name3" },
}, "ID", "Name", 1);
Or
u.UserTypeOptions = new SelectList(new List<SelectListItem>
{
new SelectListItem { Selected = true, Text = string.Empty, Value = "-1"},
new SelectListItem { Selected = false, Text = "Homeowner", Value = "2"},
new SelectListItem { Selected = false, Text = "Contractor", Value = "3"},
},"Value","Text");
I was able to get rid of my scroll bar on the body of text by removing my max-height attribute of my class.
Just reference the variable inside the function; no magic, just use it's name. If it's been created globally, then you'll be updating the global variable.
You can override this behaviour by declaring it locally using var
, but if you don't use var
, then a variable name used in a function will be global if that variable has been declared globally.
That's why it's considered best practice to always declare your variables explicitly with var
. Because if you forget it, you can start messing with globals by accident. It's an easy mistake to make. But in your case, this turn around and becomes an easy answer to your question.
Yes, you can split a string out onto multiple lines without introducing newlines into the actual string, but it aint pretty:
string s = $@"This string{
string.Empty} contains no newlines{
string.Empty} even though it is spread onto{
string.Empty} multiple lines.";
The trick is to introduce code that evaluates to empty, and that code may contain newlines without affecting the output. I adapted this approach from this answer to a similar question.
There is apparently some confusion as to what the question is, but there are two hints that what we want here is a string literal not containing any newline characters, whose definition spans multiple lines. (in the comments he says so, and "here's what I have" shows code that does not create a string with newlines in it)
This unit test shows the intent:
[TestMethod]
public void StringLiteralDoesNotContainSpaces()
{
string query = "hi"
+ "there";
Assert.AreEqual("hithere", query);
}
Change the above definition of query so that it is one string literal, instead of the concatenation of two string literals which may or may not be optimized into one by the compiler.
The C++ approach would be to end each line with a backslash, causing the newline character to be escaped and not appear in the output. Unfortunately, there is still then the issue that each line after the first must be left aligned in order to not add additional whitespace to the result.
There is only one option that does not rely on compiler optimizations that might not happen, which is to put your definition on one line. If you want to rely on compiler optimizations, the + you already have is great; you don't have to left-align the string, you don't get newlines in the result, and it's just one operation, no function calls, to expect optimization on.
ObjectID
s are objects so if you just compare them with ==
you're comparing their references. If you want to compare their values you need to use the ObjectID.equals
method:
if (results.userId.equals(AnotherMongoDocument._id)) {
...
}
This code:
from scipy.stats import linregress
linregress(x,y) #x and y are arrays or lists.
gives out a list with the following:
slope : float
slope of the regression line
intercept : float
intercept of the regression line
r-value : float
correlation coefficient
p-value : float
two-sided p-value for a hypothesis test whose null hypothesis is that the slope is zero
stderr : float
Standard error of the estimate
this is my solution
JTextField username = new JTextField();
JTextField password = new JPasswordField();
Object[] message = {
"Username:", username,
"Password:", password
};
int option = JOptionPane.showConfirmDialog(null, message, "Login", JOptionPane.OK_CANCEL_OPTION);
if (option == JOptionPane.OK_OPTION) {
if (username.getText().equals("h") && password.getText().equals("h")) {
System.out.println("Login successful");
} else {
System.out.println("login failed");
}
} else {
System.out.println("Login canceled");
}
Main point is that how to decide which one identifier should be used during development.
In java-script here are three identifiers.
1. var (Can re-declared & re-initialize)
2. const (Can't re-declared & re-initialize, can update array values by using push)
3. let (Can re-initialize but can't re-declare)
'var' : At the time of codding when we talk about code-standard then we usually use name of identifier which one easy to understandable by other user/developer. For example if we are working thought many functions where we use some input and process this and return some result, like:
**Example of variable use**
function firstFunction(input1,input2)
{
var process = input1 + 2;
var result = process - input2;
return result;
}
function otherFunction(input1,input2)
{
var process = input1 + 8;
var result = process * input2;
return result;
}
In above examples both functions producing different-2 results but using same name of variables. Here we can see 'process' & 'result' both are used as variables and they should be.
**Example of constant with variable**
const tax = 10;
const pi = 3.1415926535;
function firstFunction(input1,input2)
{
var process = input1 + 2;
var result = process - input2;
result = (result * tax)/100;
return result;
}
function otherFunction(input1,input2)
{
var process = input1 + 8;
var result = process * input2 * pi;
return result;
}
Before using 'let' in java-script we have to add ‘use strict’ on the top of js file
**Example of let with constant & variable**
const tax = 10;
const pi = 3.1415926535;
let trackExecution = '';
function firstFunction(input1,input2)
{
trackExecution += 'On firstFunction';
var process = input1 + 2;
var result = process - input2;
result = (result * tax)/100;
return result;
}
function otherFunction(input1,input2)
{
trackExecution += 'On otherFunction'; # can add current time
var process = input1 + 8;
var result = process * input2 * pi;
return result;
}
firstFunction();
otherFunction();
console.log(trackExecution);
In above example you can track which one function executed when & which one function not used during specific action.
It seems that ARM64 was created by Apple and AARCH64 by the others, most notably GNU/GCC guys.
After some googling I found this link:
The LLVM 64-bit ARM64/AArch64 Back-Ends Have Merged
So it makes sense, iPad calls itself ARM64, as Apple is using LLVM, and Edge uses AARCH64, as Android is using GNU GCC toolchain.
Public SUB test()
Dim mdate As Date
mdate = now()
MsgBox (Round(CDbl(mdate), 0))
End SUB
The simplest way is:
echo debug_backtrace()[1]['function'];
With modern (as of mid-2017 Python 3.5 and Pillow 4.0):
StringIO no longer seems to work as it used to. The BytesIO class is the proper way to handle this. Pillow's save function expects a string as the first argument, and surprisingly doesn't see StringIO as such. The following is similar to older StringIO solutions, but with BytesIO in its place.
from io import BytesIO
from PIL import Image
image = Image.open("a_file.png")
faux_file = BytesIO()
image.save(faux_file, 'png')
The WebClient class should be more than capable of handling the functionality you describe, for example:
System.Net.WebClient wc = new System.Net.WebClient();
byte[] raw = wc.DownloadData("http://www.yoursite.com/resource/file.htm");
string webData = System.Text.Encoding.UTF8.GetString(raw);
or (further to suggestion from Fredrick in comments)
System.Net.WebClient wc = new System.Net.WebClient();
string webData = wc.DownloadString("http://www.yoursite.com/resource/file.htm");
When you say it took 30 seconds, can you expand on that a little more? There are many reasons as to why that could have happened. Slow servers, internet connections, dodgy implementation etc etc.
You could go a level lower and implement something like this:
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("http://www.yoursite.com/resource/file.htm");
using (StreamWriter streamWriter = new StreamWriter(webRequest.GetRequestStream(), Encoding.UTF8))
{
streamWriter.Write(requestData);
}
string responseData = string.Empty;
HttpWebResponse httpResponse = (HttpWebResponse)webRequest.GetResponse();
using (StreamReader responseReader = new StreamReader(httpResponse.GetResponseStream()))
{
responseData = responseReader.ReadToEnd();
}
However, at the end of the day the WebClient class wraps up this functionality for you. So I would suggest that you use WebClient and investigate the causes of the 30 second delay.
if your requirement is like parsing an replacing multiple variable and then use it as a hash/or anything then you can do something like this
require 'yaml'
require 'json'
yaml = YAML.load_file("xxxx.yaml")
blueprint = yaml.to_json % { var_a: "xxxx", var_b: "xxxx"}
hash = JSON.parse(blueprint)
inside the yaml just put variables like this
"%{var_a}"
You could have a redirect servlet. In you web.xml you'd have:
<servlet>
<servlet-name>images</servlet-name>
<servlet-class>com.example.images.ImageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>images</servlet-name>
<url-pattern>/images/*</url-pattern>
</servlet-mapping>
All your images would be in "/images", which would be intercepted by the servlet. It would then read in the relevant file in whatever folder and serve it right back out. For example, say you have a gif in your images folder, c:\Server_Images\smilie.gif. In the web page would be <img src="http:/example.com/app/images/smilie.gif"...
. In the servlet, HttpServletRequest.getPathInfo()
would yield "/smilie.gif". Which the servlet would find in the folder.
As a sidenote to @Navaneethan 's answer, Jinja2
is able to do "regular" item selections for the list and the dictionary, given we know the key of the dictionary, or the locations of items in the list.
parent_dict = [{'A':'val1','B':'val2', 'content': [["1.1", "2.2"]]},{'A':'val3','B':'val4', 'content': [["3.3", "4.4"]]}]
{% for dict_item in parent_dict %}
This example has {{dict_item['A']}} and {{dict_item['B']}}:
with the content --
{% for item in dict_item['content'] %}{{item[0]}} and {{item[1]}}{% endfor %}.
{% endfor %}
This example has val1 and val2:
with the content --
1.1 and 2.2.
This example has val3 and val4:
with the content --
3.3 and 4.4.
I had this issue too, also running on an emulator.. The same message was showing up on Logcat, but it wasn't affecting the functionality of the app. But it was annoying, and I don't like seeing errors on the log that I don't understand.
Anyway, I got rid of the message by increasing the RAM on the emulator.
I can confirm ckramer that jQuery's ready event works in IE and FireFox. Here's a sample:
<html>
<head>
<title>Test Page</title>
<script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
var d = new Date();
$('#test').html( "Hi at " + d.toString() );
});
</script>
</head>
<body>
<div id="test"></div>
<div>
<a href="http://www.google.com">Go!</a>
</div>
</body>
</html>
There's a lot of talks going on regarding the simplicity of asmx web services over WCF. Let me clarify few points here.
Not to forget that I was one of those guys who liked asmx services more than WCF, but that time I was not well aware of WCF services and its capabilities. I was scared of the WCF configurations. But I dared and and tried writing few WCF services of my own, and when I learnt more of WCF, now I have no inhibitions about WCF and I recommend them to anyone & everyone. Happy coding!!!
Here we go... just copy the code to a module, it's ready to use
Private Type hashtable
key As Variant
value As Variant
End Type
Private GetErrMsg As String
Private Function CreateHashTable(htable() As hashtable) As Boolean
GetErrMsg = ""
On Error GoTo CreateErr
ReDim htable(0)
CreateHashTable = True
Exit Function
CreateErr:
CreateHashTable = False
GetErrMsg = Err.Description
End Function
Private Function AddValue(htable() As hashtable, key As Variant, value As Variant) As Long
GetErrMsg = ""
On Error GoTo AddErr
Dim idx As Long
idx = UBound(htable) + 1
Dim htVal As hashtable
htVal.key = key
htVal.value = value
Dim i As Long
For i = 1 To UBound(htable)
If htable(i).key = key Then Err.Raise 9999, , "Key [" & CStr(key) & "] is not unique"
Next i
ReDim Preserve htable(idx)
htable(idx) = htVal
AddValue = idx
Exit Function
AddErr:
AddValue = 0
GetErrMsg = Err.Description
End Function
Private Function RemoveValue(htable() As hashtable, key As Variant) As Boolean
GetErrMsg = ""
On Error GoTo RemoveErr
Dim i As Long, idx As Long
Dim htTemp() As hashtable
idx = 0
For i = 1 To UBound(htable)
If htable(i).key <> key And IsEmpty(htable(i).key) = False Then
ReDim Preserve htTemp(idx)
AddValue htTemp, htable(i).key, htable(i).value
idx = idx + 1
End If
Next i
If UBound(htable) = UBound(htTemp) Then Err.Raise 9998, , "Key [" & CStr(key) & "] not found"
htable = htTemp
RemoveValue = True
Exit Function
RemoveErr:
RemoveValue = False
GetErrMsg = Err.Description
End Function
Private Function GetValue(htable() As hashtable, key As Variant) As Variant
GetErrMsg = ""
On Error GoTo GetValueErr
Dim found As Boolean
found = False
For i = 1 To UBound(htable)
If htable(i).key = key And IsEmpty(htable(i).key) = False Then
GetValue = htable(i).value
Exit Function
End If
Next i
Err.Raise 9997, , "Key [" & CStr(key) & "] not found"
Exit Function
GetValueErr:
GetValue = ""
GetErrMsg = Err.Description
End Function
Private Function GetValueCount(htable() As hashtable) As Long
GetErrMsg = ""
On Error GoTo GetValueCountErr
GetValueCount = UBound(htable)
Exit Function
GetValueCountErr:
GetValueCount = 0
GetErrMsg = Err.Description
End Function
To use in your VB(A) App:
Public Sub Test()
Dim hashtbl() As hashtable
Debug.Print "Create Hashtable: " & CreateHashTable(hashtbl)
Debug.Print ""
Debug.Print "ID Test Add V1: " & AddValue(hashtbl, "Hallo_0", "Testwert 0")
Debug.Print "ID Test Add V2: " & AddValue(hashtbl, "Hallo_0", "Testwert 0")
Debug.Print "ID Test 1 Add V1: " & AddValue(hashtbl, "Hallo.1", "Testwert 1")
Debug.Print "ID Test 2 Add V1: " & AddValue(hashtbl, "Hallo-2", "Testwert 2")
Debug.Print "ID Test 3 Add V1: " & AddValue(hashtbl, "Hallo 3", "Testwert 3")
Debug.Print ""
Debug.Print "Test 1 Removed V1: " & RemoveValue(hashtbl, "Hallo_1")
Debug.Print "Test 1 Removed V2: " & RemoveValue(hashtbl, "Hallo_1")
Debug.Print "Test 2 Removed V1: " & RemoveValue(hashtbl, "Hallo-2")
Debug.Print ""
Debug.Print "Value Test 3: " & CStr(GetValue(hashtbl, "Hallo 3"))
Debug.Print "Value Test 1: " & CStr(GetValue(hashtbl, "Hallo_1"))
Debug.Print ""
Debug.Print "Hashtable Content:"
For i = 1 To UBound(hashtbl)
Debug.Print CStr(i) & ": " & CStr(hashtbl(i).key) & " - " & CStr(hashtbl(i).value)
Next i
Debug.Print ""
Debug.Print "Count: " & CStr(GetValueCount(hashtbl))
End Sub
We can't reference the result of an aggregate function (for example MAX()
) in a WHERE
clause of the same SELECT
.
The normative pattern for solving this type of problem is to use an inline view, something like this:
SELECT t.firstName
, t.Lastname
, t.id
FROM mytable t
JOIN ( SELECT MAX(mx.id) AS max_id
FROM mytable mx
) m
ON m.max_id = t.id
This is just one way to get the specified result. There are several other approaches to get the same result, and some of those can be much less efficient than others. Other answers demonstrate this approach:
WHERE t.id = (SELECT MAX(id) FROM ... )
Sometimes, the simplest approach is to use an ORDER BY with a LIMIT. (Note that this syntax is specific to MySQL)
SELECT t.firstName
, t.Lastname
, t.id
FROM mytable t
ORDER BY t.id DESC
LIMIT 1
Note that this will return only one row; so if there is more than one row with the same id value, then this won't return all of them. (The first query will return ALL the rows that have the same id value.)
This approach can be extended to get more than one row, you could get the five rows that have the highest id values by changing it to LIMIT 5
.
Note that performance of this approach is particularly dependent on a suitable index being available (i.e. with id
as the PRIMARY KEY or as the leading column in another index.) A suitable index will improve performance of queries using all of these approaches.
Here is the code you need:
start cmd.exe @cmd /k "Command"
string[] filePaths = Directory.GetFiles(@"c:\MyDir\");
foreach (string filePath in filePaths)
File.Delete(filePath);
Or in a single line:
Array.ForEach(Directory.GetFiles(@"c:\MyDir\"), File.Delete);
use return
for this
if(i==1) {
return; //stop the execution of function
}
//keep on going
Provide a path (myfolder in this case) and just run:
git diff myfolder/
Have a look at: Greybox
It's an awesome version of lightbox that supports forms, external web pages as well as the traditional images and slideshows. It works perfectly from a link on a webpage.
You will find many information on how to use Greybox and also some great examples. Cheers Kara
Since sudo will not work with redirection >
, I like the tee
command for this purpose
echo "" | sudo tee fileName
see RFC6265:
The user agent will reject cookies unless the Domain attribute specifies a scope for the cookie that would include the origin server. For example, the user agent will accept a cookie with a Domain attribute of "example.com" or of "foo.example.com" from foo.example.com, but the user agent will not accept a cookie with a Domain attribute of "bar.example.com" or of "baz.foo.example.com".
NOTE: For security reasons, many user agents are configured to reject Domain attributes that correspond to "public suffixes". For example, some user agents will reject Domain attributes of "com" or "co.uk". (See Section 5.3 for more information.)
But the above mentioned workaround with image/iframe works, though it's not recommended due to its insecurity.
Directly from the Windows.h header file:
#ifndef WIN32_LEAN_AND_MEAN
#include <cderr.h>
#include <dde.h>
#include <ddeml.h>
#include <dlgs.h>
#ifndef _MAC
#include <lzexpand.h>
#include <mmsystem.h>
#include <nb30.h>
#include <rpc.h>
#endif
#include <shellapi.h>
#ifndef _MAC
#include <winperf.h>
#include <winsock.h>
#endif
#ifndef NOCRYPT
#include <wincrypt.h>
#include <winefs.h>
#include <winscard.h>
#endif
#ifndef NOGDI
#ifndef _MAC
#include <winspool.h>
#ifdef INC_OLE1
#include <ole.h>
#else
#include <ole2.h>
#endif /* !INC_OLE1 */
#endif /* !MAC */
#include <commdlg.h>
#endif /* !NOGDI */
#endif /* WIN32_LEAN_AND_MEAN */
if you want to know what each of the headers actually do, typeing the header names into the search in the MSDN library will usually produce a list of the functions in that header file.
Also, from Microsoft's support page:
To speed the build process, Visual C++ and the Windows Headers provide the following new defines:
VC_EXTRALEAN
WIN32_LEAN_AND_MEANYou can use them to reduce the size of the Win32 header files.
Finally, if you choose to use either of these preprocessor defines, and something you need is missing, you can just include that specific header file yourself. Typing the name of the function you're after into MSDN will usually produce an entry which will tell you which header to include if you want to use it, at the bottom of the page.
I have used methods described above. Now I am using the method which is a way similiar but more simple to me.
Like this:
<img src="icon.jpg" width="324" height="324">
<p align="center">
<img src="screen1.png" width="256" height="455">
<img src="screen2.png" width="256" height="455">
<img src="screen3.png" width="256" height="455">
</p>
On above example I have used paragraph to align images side by side. If you are going to use single image just use the code as below
<img src="icon.jpg" width="324" height="324">
Have a nice day!
following won't work
echo $(awk '{awk code}' file) > file
this should work
echo "$(awk '{awk code}' file)" > file
Just to make this absolutely clear for all:
A .MDF file is “typically” a SQL Server data file however it is important to note that it does NOT have to be.
This is because .MDF is nothing more than a recommended/preferred notation but the extension itself does not actually dictate the file type.
To illustrate this, if someone wanted to create their primary data file with an extension of .gbn they could go ahead and do so without issue.
To qualify the preferred naming conventions:
Had that issue on Ubuntu 14.04, In my case I had also libXtst.so missing:
Could not open library 'libXtst.so': libXtst.so: cannot open shared object
file: No such file or directory
Make sure your symbolic link is pointing to proper file, cd /usr/lib/x86_64-linux-gnu and list libXtst with:
ll |grep libXtst
lrwxrwxrwx 1 root root 16 Oct 7 2016 libXtst.so.6 -> libXtst.so.6.1.0
-rw-r--r-- 1 root root 22880 Aug 16 2013 libXtst.so.6.1.0
Then just create proper symbolic link using:
sudo ln -s libXtst.so.6 libXtst.so
List again:
ll | grep libXtst
lrwxrwxrwx 1 root root 12 Sep 20 10:23 libXtst -> libXtst.so.6
lrwxrwxrwx 1 root root 12 Sep 20 10:23 libXtst.so -> libXtst.so.6
lrwxrwxrwx 1 root root 16 Oct 7 2016 libXtst.so.6 -> libXtst.so.6.1.0
-rw-r--r-- 1 root root 22880 Aug 16 2013 libXtst.so.6.1.0
all set!
I build the logic without using any built-in methods, please let me know any optimization or modifications. I tested in JS editor it is working fine.
var myArray = [
{name: 'deepak', place: 'bangalore'},
{name: 'alok', place: 'berhampur'},
{name: 'chirag', place: 'bangalore'},
{name: 'chandan', place: 'mumbai'},
];
var toRemove = [
{name: 'chirag', place: 'bangalore'},
{name: 'deepak', place: 'bangalore'},
/*{name: 'chandan', place: 'mumbai'},*/
/*{name: 'alok', place: 'berhampur'},*/
];
var tempArr = [];
for( var i=0 ; i < myArray.length; i++){
for( var j=0; j<toRemove.length; j++){
var toRemoveObj = toRemove[j];
if(myArray[i] && (myArray[i].name === toRemove[j].name)) {
break;
}else if(myArray[i] && (myArray[i].name !== toRemove[j].name)){
var fnd = isExists(tempArr,myArray[i]);
if(!fnd){
var idx = getIdex(toRemove,myArray[i])
if (idx === -1){
tempArr.push(myArray[i]);
}
}
}
}
}
function isExists(source,item){
var isFound = false;
for( var i=0 ; i < source.length; i++){
var obj = source[i];
if(item && obj && obj.name === item.name){
isFound = true;
break;
}
}
return isFound;
}
function getIdex(toRemove,item){
var idex = -1;
for( var i=0 ; i < toRemove.length; i++){
var rObj =toRemove[i];
if(rObj && item && rObj.name === item.name){
idex=i;
break;
}
}
return idex;
}
I've always used .place()
for my tkinter widgets.
place syntax
You can specify the size of it just by changing the keyword arguments!
Of course, you will have to call .place()
again if you want to change it.
Works in python 3.8.2, if you're wondering.
I've solved this problem by using following steps
su hdfs
hadoop fs -put /usr/local/input-data/ /input
exit
SELECT [name]
FROM master.dbo.sysdatabases
WHERE dbid > 4 and [name] <> 'ReportServer' and [name] <> 'ReportServerTempDB'
This will work for both condition, Whether reporting is enabled or not
Now there is a very useful npm package for this: buffer
https://github.com/feross/buffer
It tries to provide an API that is 100% identical to node's Buffer API and allow:
and few more.
None
is a singleton, therefore identity comparison will always work, whereas an object can fake the equality comparison via .__eq__()
.
If your host not at pvn or dedicated, it's dificult to restart server.
Better solution from me, just edit your CSS file (at another domain or your subdomain) that call font eot, woff etc to your origin (your-domain or www yourdomain). it will solve your problem.
I mean, edit relative url on css to absolute url origin domain
You could simply separate it with newlines (without using backslash) as required within the indentation as follows and just strip of new lines.
Example:
echo "continuation
of
lines" | tr '\n' ' '
Or if it is a variable definition newlines gets automatically converted to spaces. So, strip of extra spaces only if applicable.
x="continuation
of multiple
lines"
y="red|blue|
green|yellow"
echo $x # This will do as the converted space actually is meaningful
echo $y | tr -d ' ' # Stripping of space may be preferable in this case
Use Notepad ++ and use the option to Convert the file to UNIX format. That should solve this problem.
The pack
method sizes the frame so that all its contents are at or above their preferred sizes. An alternative to pack is to establish a frame size explicitly by calling setSize
or setBounds
(which also sets the frame location). In general, using pack is preferable to calling setSize
, since pack leaves the frame layout manager in charge of the frame size, and layout managers are good at adjusting to platform dependencies and other factors that affect component size.
From Java tutorial
You should also refer to Javadocs any time you need additional information on any Java API
Choose one you need:
>>> s = "Rajasekar SP def"
>>> s.split(' ')
['Rajasekar', 'SP', '', 'def']
>>> s.split()
['Rajasekar', 'SP', 'def']
>>> s.partition(' ')
('Rajasekar', ' ', 'SP def')
You could use str_replace
to replace the <br />
tags into end of line characters.
str_replace('<br />', PHP_EOL, $textarea);
Alternatively, you could save the data in the database without calling nl2br
first. That way the line breaks would remain. When you display as HTML, call nl2br
. An additional benefit of this approach is that it would require less storage space in your database as a line break is 1 character as opposed to "<br />
" which is 6.
When you write .class
after a class name, it references the class literal -
java.lang.Class
object that represents information about given class.
For example, if your class is Print
, then Print.class
is an object that represents the class Print
on runtime. It is the same object that is returned by the getClass()
method of any (direct) instance of Print
.
Print myPrint = new Print();
System.out.println(Print.class.getName());
System.out.println(myPrint.getClass().getName());
i've been with this issue using elementary OS loki. For like one day and i solved it restarting the adb using this command:
./adb kill-server
and
./adb start-server
You need to be in the Sdk folder >Platform Tools
Now, restart your phone this will restart all the process in your phone.
And that's how i fixed it.
There is a subtle issue here that is a bit of a gotcha.
The toString()
method has a base implementation in Object
. CharSequence
is an interface; and although the toString()
method appears as part of that interface, there is nothing at compile-time that will force you to override it and honor the additional constraints that the CharSequence
toString()
method's javadoc puts on the toString()
method; ie that it should return a string containing the characters in the order returned by charAt()
.
Your IDE won't even help you out by reminding that you that you probably should override toString()
. For example, in intellij, this is what you'll see if you create a new CharSequence
implementation: http://puu.sh/2w1RJ. Note the absence of toString()
.
If you rely on toString()
on an arbitrary CharSequence
, it should work provided the CharSequence
implementer did their job properly. But if you want to avoid any uncertainty altogether, you should use a StringBuilder
and append()
, like so:
final StringBuilder sb = new StringBuilder(charSequence.length());
sb.append(charSequence);
return sb.toString();
The REFERER is sent by the client's browser as part of the HTTP protocol, and is therefore unreliable indeed. It might not be there, it might be forged, you just can't trust it if it's for security reasons.
If you want to verify if a request is coming from your site, well you can't, but you can verify the user has been to your site and/or is authenticated. Cookies are sent in AJAX requests so you can rely on that.
The best answer I use to receive data from server and display it
constructor(props){
super(props);
this.state = {
items2 : [{}],
isLoading: true
}
}
componentWillMount (){
axios({
method: 'get',
responseType: 'json',
url: '....',
})
.then(response => {
self.setState({
items2: response ,
isLoading: false
});
console.log("Asmaa Almadhoun *** : " + self.state.items2);
})
.catch(error => {
console.log("Error *** : " + error);
});
})}
render() {
return(
{ this.state.isLoading &&
<i className="fa fa-spinner fa-spin"></i>
}
{ !this.state.isLoading &&
//external component passing Server data to its classes
<TestDynamic items={this.state.items2}/>
}
) }
The other answers are all good. For Xilinx FPGA designs, it is best not to use global reset lines, and use initial
blocks for reset conditions for most logic. Here is the white paper from Ken Chapman (Xilinx FPGA guru)
http://japan.xilinx.com/support/documentation/white_papers/wp272.pdf
I think you are all over engineering..
$('.navbar-collapse ul li a').click(function(){
$('.navbar-toggle:visible').click();
});
EDIT: To take care of sub menus, make sure their toggle anchor has the dropdown-toggle class on it.
$(function () {
$('.navbar-collapse ul li a:not(.dropdown-toggle)').click(function () {
$('.navbar-toggle:visible').click();
});
});
EDIT 2: Add support for phone touch.
$(function () {
$('.navbar-collapse ul li a:not(.dropdown-toggle)').bind('click touchstart', function () {
$('.navbar-toggle:visible').click();
});
});
Named exports:
Let's say you create a file called utils.js
, with utility functions that you want to make available for other modules (e.g. a React component). Then you would make each function a named export:
export function add(x, y) {
return x + y
}
export function mutiply(x, y) {
return x * y
}
Assuming that utils.js is located in the same directory as your React component, you can use its exports like this:
import { add, multiply } from './utils.js';
...
add(2, 3) // Can be called wherever in your component, and would return 5.
Or if you prefer, place the entire module's contents under a common namespace:
import * as utils from './utils.js';
...
utils.multiply(2,3)
Default exports:
If you on the other hand have a module that only does one thing (could be a React class, a normal function, a constant, or anything else) and want to make that thing available to others, you can use a default export. Let's say we have a file log.js
, with only one function that logs out whatever argument it's called with:
export default function log(message) {
console.log(message);
}
This can now be used like this:
import log from './log.js';
...
log('test') // Would print 'test' in the console.
You don't have to call it log
when you import it, you could actually call it whatever you want:
import logToConsole from './log.js';
...
logToConsole('test') // Would also print 'test' in the console.
Combined:
A module can have both a default export (max 1), and named exports (imported either one by one, or using *
with an alias). React actually has this, consider:
import React, { Component, PropTypes } from 'react';
You want to write a function (a recursive function is easiest, but can easily run out of stack space on deep directories) that will enumerate the children of a directory. If you find a child that is a directory, you recurse on that. Otherwise, you delete the files inside. When you are done, the directory is empty and you can remove it via the syscall.
To enumerate directories on Unix, you can use opendir()
, readdir()
, and closedir()
. To remove you use rmdir()
on an empty directory (i.e. at the end of your function, after deleting the children) and unlink()
on a file. Note that on many systems the d_type
member in struct dirent
is not supported; on these platforms, you will have to use stat()
and S_ISDIR(stat.st_mode)
to determine if a given path is a directory.
On Windows, you will use FindFirstFile()
/FindNextFile()
to enumerate, RemoveDirectory()
on empty directories, and DeleteFile()
to remove files.
Here's an example that might work on Unix (completely untested):
int remove_directory(const char *path) {
DIR *d = opendir(path);
size_t path_len = strlen(path);
int r = -1;
if (d) {
struct dirent *p;
r = 0;
while (!r && (p=readdir(d))) {
int r2 = -1;
char *buf;
size_t len;
/* Skip the names "." and ".." as we don't want to recurse on them. */
if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, ".."))
continue;
len = path_len + strlen(p->d_name) + 2;
buf = malloc(len);
if (buf) {
struct stat statbuf;
snprintf(buf, len, "%s/%s", path, p->d_name);
if (!stat(buf, &statbuf)) {
if (S_ISDIR(statbuf.st_mode))
r2 = remove_directory(buf);
else
r2 = unlink(buf);
}
free(buf);
}
r = r2;
}
closedir(d);
}
if (!r)
r = rmdir(path);
return r;
}
The EXCEL and OLED DB connection managers use the parameter names 0 and 1.
I was using a oledb connection and wasted couple of hours trying to figure out the reason why the query was not working or taking the parameters. the above explanation helped a lot Thanks a lot.
Boolean
is threadsafe, so you can consider this factor as well along with all other listed in answers
None of the things mentioned earlier here did actually work for me. But then I found this menu entry in the file menu Invalidate Caches/Restart
which appears to have fixed the problem.
I don't really know what happened in the background but when Android Studio started up again the status bar said Indexing...
for a minute or so which apparently did wonders.
For reference I'm using Android Studio 0.5.4.