In line with my answer to a related question, I'm going to disagree with BJ and suggest you first look at GCD over NSOperation / NSOperationQueue, unless the latter provides something you need that GCD doesn't.
Before GCD, I used a lot of NSOperations / NSOperationQueues within my applications for managing concurrency. However, since I started using GCD on a regular basis, I've almost entirely replaced NSOperations and NSOperationQueues with blocks and dispatch queues. This has come from how I've used both technologies in practice, and from the profiling I've performed on them.
First, there is a nontrivial amount of overhead when using NSOperations and NSOperationQueues. These are Cocoa objects, and they need to be allocated and deallocated. In an iOS application that I wrote which renders a 3-D scene at 60 FPS, I was using NSOperations to encapsulate each rendered frame. When I profiled this, the creation and teardown of these NSOperations was accounting for a significant portion of the CPU cycles in the running application, and was slowing things down. I replaced these with simple blocks and a GCD serial queue, and that overhead disappeared, leading to noticeably better rendering performance. This wasn't the only place where I noticed overhead from using NSOperations, and I've seen this on both Mac and iOS.
Second, there's an elegance to block-based dispatch code that is hard to match when using NSOperations. It's so incredibly convenient to wrap a few lines of code in a block and dispatch it to be performed on a serial or concurrent queue, where creating a custom NSOperation or NSInvocationOperation to do this requires a lot more supporting code. I know that you can use an NSBlockOperation, but you might as well be dispatching something to GCD then. Wrapping this code in blocks inline with related processing in your application leads in my opinion to better code organization than having separate methods or custom NSOperations which encapsulate these tasks.
NSOperations and NSOperationQueues still have very good uses. GCD has no real concept of dependencies, where NSOperationQueues can set up pretty complex dependency graphs. I use NSOperationQueues for this in a handful of cases.
Overall, while I usually advocate for using the highest level of abstraction that accomplishes the task, this is one case where I argue for the lower-level API of GCD. Among the iOS and Mac developers I've talked with about this, the vast majority choose to use GCD over NSOperations unless they are targeting OS versions without support for it (those before iOS 4.0 and Snow Leopard).
This can be done in a single pass, in O(N) time in the number of integers in the input list, and O(N) storage in the number of unique integers.
Walk through the list from front to back, with two pointers "dst" and "src" initialized to the first item. Start with an empty hash table of "integers seen". If the integer at src is not present in the hash, write it to the slot at dst and increment dst. Add the integer at src to the hash, then increment src. Repeat until src passes the end of the input list.
subclasses
of class RuntimeException
are unchecked exception.Exception
but not RuntimeException
are considered to be checked exceptions
.checked exception
.
throws
clause containing the checked-exception
.Exception
classes are defined to be checked when they are considered important enough to catch or declare.For anyone still visiting, I've recently had the same issue and decided to write a small library based on answers from this post. It provides constexpr type names and type indices und is is tested on Mac, Windows and Ubuntu.
The library code is here: https://github.com/TheLartians/StaticTypeInfo
If you are here to just convert Timestamp into DateTime,
Timestamp timestamp = widget.firebaseDocument[timeStampfield];
DateTime date = Timestamp.fromMillisecondsSinceEpoch(
timestamp.millisecondsSinceEpoch).toDate();
Have you noticed that you don't get the error if you run
python ./script.py
instead of
python script.py
This is because sys.argv[0]
will read ./script.py
in the former case, which gives os.path.dirname
something to work with. When you don't specify a path, sys.argv[0]
reads simply script.py
, and os.path.dirname
cannot determine a path.
Flexbox-based tables can easily be sorted by using flexbox property "order".
Here's an example:
function sortTable() {_x000D_
let table = document.querySelector("#table")_x000D_
let children = [...table.children]_x000D_
let sortedArr = children.map(e => e.innerText).sort((a, b) => a.localeCompare(b));_x000D_
_x000D_
children.forEach(child => {_x000D_
child.style.order = sortedArr.indexOf(child.innerText)_x000D_
})_x000D_
}_x000D_
_x000D_
document.querySelector("#sort").addEventListener("click", sortTable)
_x000D_
#table {_x000D_
display: flex;_x000D_
flex-direction: column_x000D_
}
_x000D_
<div id="table">_x000D_
<div>Melissa</div>_x000D_
<div>Justin</div>_x000D_
<div>Judy</div>_x000D_
<div>Skipper</div>_x000D_
<div>Alex</div>_x000D_
</div>_x000D_
<button id="sort"> sort </button>
_x000D_
Explanation
The sortTable
function extracts the data of the table into an array, which is then sorted in alphabetic order. After that we loop through the table items and assign the CSS property order
equal to index of an item's data in our sorted array.
Another example is available here:
Sending a JSON to server and retrieving a JSON in return, without JQuery
Which is the same as jans answer, but also checks the servers response by setting a onreadystatechange callback on the XMLHttpRequest.
this did it for me. you can vary the options for the output format to Base64.Default whatsoever.
// encode base64 from image
ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageBitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] b = baos.toByteArray();
encodedString = Base64.encodeToString(b, Base64.URL_SAFE | Base64.NO_WRAP);
This is an interesting question, i just want to give another angle by adding a little more info.You can understand why an exception is thrown if you see how static methods operate. These methods can manipulate either static data, local data or data that is sent to it as a parameter.why? because static method can be accessed by any object, from anywhere. So, there can be security issues posed or there can be leaks of information if it can use instance variables.Hence the compiler has to throw such a case out of consideration.
The way of dknaack does not work for me, I found this solution as well:
@Html.DropDownList("Chapters", ViewBag.Chapters as SelectList,
"Select chapter", new { @onchange = "location = this.value;" })
where
@Html.DropDownList(controlName, ViewBag.property + cast, "Default value", @onchange event)
In the controller you can add:
DbModel db = new DbModel(); //entity model of Entity Framework
ViewBag.Chapters = new SelectList(db.T_Chapter, "Id", "Name");
NEW DEVELOPMENTS! (if you have Chrome 63+)
If your localhost domain is .dev
then I don't think the previously accepted and working answers no longer apply. This is because as of the Chrome 63 Chrome will force .dev domains to HTTPS via preloaded HSTS.
What this means is, .dev
basically won't work at all anymore unless you have proper signed SSL certificate -- no more self signed certificates allowed! Learn more at this blog post.
So to fix this issue now and to avoid this happening again in the future .test
is one recommended domain because it is reserved by IETF for testing / dev purposes. You should also be able to use .localhost
for local dev.
I had a lot of trouble getting opencv 3.0 to work on OSX with python3 bindings and virtual environments. The other answers helped a lot, but it still took a bit. Hopefully this will help the next person. Save this to build_opencv.sh
. Then download opencv, modify the variables in the below shell script, cross your fingers, and run it (. ./build_opencv.sh
). For debugging, use the other posts, especially James Fletchers.
Don't forget to add the opencv lib dir to your PYTHONPATH.
Note - this also downloads opencv-contrib, where many of the functions have been moved. And they are also now referenced by a different namespace than the documentation - for instance SIFT is now under cv2.xfeatures2d.SIFT_create. Uggh.
#!/bin/bash
# Install opencv with python3 bindings: https://stackoverflow.com/questions/20953273/install-opencv-for-python-3-3/21212023#21212023
# First download opencv and put in OPENCV_DIR
#
# Edit this section
#
PYTHON_DIR=/Library/Frameworks/Python.framework/Versions/3.4
OPENCV_DIR=/usr/local/Cellar/opencv/3.0.0
NUM_THREADS=8
CONTRIB_TAG="3.0.0" # This will also download opencv_contrib and checkout the appropriate tag https://github.com/Itseez/opencv_contrib
#
# Run it
#
set -e # Exit if error
cd ${OPENCV_DIR}
if [[ ! -d opencv_contrib ]]
then
echo '**Get contrib modules'
[[ -d opencv_contrib ]] || mkdir opencv_contrib
git clone [email protected]:Itseez/opencv_contrib.git .
git checkout ${CONTRIB_TAG}
else
echo '**Contrib directory already exists. Not fetching.'
fi
cd ${OPENCV_DIR}
echo '**Going to do: cmake'
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D PYTHON_EXECUTABLE=${PYTHON_DIR}/bin/python3 \
-D PYTHON_LIBRARY=${PYTHON_DIR}/lib/libpython3.4m.dylib \
-D PYTHON_INCLUDE_DIR=${PYTHON_DIR}/include/python3.4m \
-D PYTHON_NUMPY_INCLUDE_DIRS=${PYTHON_DIR}/lib/python3.4/site-packages/numpy/core/include/numpy \
-D PYTHON_PACKAGES_PATH=${PYTHON_DIR}lib/python3.4/site-packages \
-D OPENCV_EXTRA_MODULES_PATH=opencv_contrib/modules \
-D BUILD_opencv_legacy=OFF \
${OPENCV_DIR}
echo '**Going to do: make'
make -j${NUM_THREADS}
echo '**Going to do: make install'
sudo make install
echo '**Add the following to your .bashrc: export PYTHONPATH=${PYTHONPATH}:${OPENCV_DIR}/lib'
export PYTHONPATH=${PYTHONPATH}:${OPENCV_DIR}/lib
echo '**Testing if it worked'
python3 -c 'import cv2'
echo 'opencv properly installed with python3 bindings!' # The script will exit if the above failed.
I selected the cells I wanted locked out in sheet1 and place the suggested code in the open_workbook() function and worked like a charm.
ThisWorkbook.Worksheets("Sheet1").Protect Password:="Password", _
UserInterfaceOnly:=True
The idea is creating a Runnable
for execute long click in a future, but this execution can be canceled because of a click, or move.
You also need to know, when long click was consumed, and when it is canceled because finger moved too much. We use initialTouchX
& initialTouchY
for checking if the user exit a square area of 10 pixels, 5 each side.
Here is my complete code for delegating Click & LongClick from Cell
in ListView
to Activity
with OnTouchListener
:
ClickDelegate delegate;
boolean goneFlag = false;
float initialTouchX;
float initialTouchY;
final Handler handler = new Handler();
Runnable mLongPressed = new Runnable() {
public void run() {
Log.i("TOUCH_EVENT", "Long press!");
if (delegate != null) {
goneFlag = delegate.onItemLongClick(index);
} else {
goneFlag = true;
}
}
};
@OnTouch({R.id.layout})
public boolean onTouch (View view, MotionEvent motionEvent) {
switch (motionEvent.getAction()) {
case MotionEvent.ACTION_DOWN:
handler.postDelayed(mLongPressed, ViewConfiguration.getLongPressTimeout());
initialTouchX = motionEvent.getRawX();
initialTouchY = motionEvent.getRawY();
return true;
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_CANCEL:
if (Math.abs(motionEvent.getRawX() - initialTouchX) > 5 || Math.abs(motionEvent.getRawY() - initialTouchY) > 5) {
handler.removeCallbacks(mLongPressed);
return true;
}
return false;
case MotionEvent.ACTION_UP:
handler.removeCallbacks(mLongPressed);
if (goneFlag || Math.abs(motionEvent.getRawX() - initialTouchX) > 5 || Math.abs(motionEvent.getRawY() - initialTouchY) > 5) {
goneFlag = false;
return true;
}
break;
}
Log.i("TOUCH_EVENT", "Short press!");
if (delegate != null) {
if (delegate.onItemClick(index)) {
return false;
}
}
return false;
}
ClickDelegate
is an interface
for sending click events to the handler class like an Activity
public interface ClickDelegate {
boolean onItemClick(int position);
boolean onItemLongClick(int position);
}
And all what you need is to implement it in your Activity
or parent View
if you need to delegate the behavior:
public class MyActivity extends Activity implements ClickDelegate {
//code...
//in some place of you code like onCreate,
//you need to set the delegate like this:
SomeArrayAdapter.delegate = this;
//or:
SomeViewHolder.delegate = this;
//or:
SomeCustomView.delegate = this;
@Override
public boolean onItemClick(int position) {
Object obj = list.get(position);
if (obj) {
return true; //if you handle click
} else {
return false; //if not, it could be another event
}
}
@Override
public boolean onItemLongClick(int position) {
Object obj = list.get(position);
if (obj) {
return true; //if you handle long click
} else {
return false; //if not, it's a click
}
}
}
You can replace your old dictionary with a defaultdict
:
>>> from collections import defaultdict
>>> d = {'foo': 123, 'bar': 456}
>>> d['baz']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 'baz'
>>> d = defaultdict(lambda: -1, d)
>>> d['baz']
-1
The "trick" here is that a defaultdict
can be initialized with another dict
. This means
that you preserve the existing values in your normal dict
:
>>> d['foo']
123
In an AngularJS directive the scope allows you to access the data in the attributes of the element to which the directive is applied.
This is illustrated best with an example:
<div my-customer name="Customer XYZ"></div>
and the directive definition:
angular.module('myModule', [])
.directive('myCustomer', function() {
return {
restrict: 'E',
scope: {
customerName: '@name'
},
controllerAs: 'vm',
bindToController: true,
controller: ['$http', function($http) {
var vm = this;
vm.doStuff = function(pane) {
console.log(vm.customerName);
};
}],
link: function(scope, element, attrs) {
console.log(scope.customerName);
}
};
});
When the scope
property is used the directive is in the so called "isolated scope" mode, meaning it can not directly access the scope of the parent controller.
In very simple terms, the meaning of the binding symbols is:
someObject: '='
(two-way data binding)
someString: '@'
(passed directly or through interpolation with double curly braces notation {{}}
)
someExpression: '&'
(e.g. hideDialog()
)
This information is present in the AngularJS directive documentation page, although somewhat spread throughout the page.
The symbol >
is not part of the syntax.
However, <
does exist as part of the AngularJS component bindings and means one way binding.
This page tell that using "::" will be faster under certain constraints Just a thing to consider when choosing
[ ]
- this is used whenever we are declaring an empty array,
{ }
- this is used whenever we declare an empty object
typeof([ ]) //object
typeof({ }) //object
but if your run
[ ].constructor.name //Array
so from this, you will understand it is an array here Array is the name of the base class. The JavaScript Array class is a global object that is used in the construction of arrays which are high-level, list-like objects.
My solution was inspired by @d60402's answer and also relies on a time-window, but not using the Timer
:
public abstract class BaseActivity extends ActionBarActivity {
protected boolean wasInBackground = false;
@Override
protected void onStart() {
super.onStart();
wasInBackground = getApp().isInBackground;
getApp().isInBackground = false;
getApp().lastForegroundTransition = System.currentTimeMillis();
}
@Override
protected void onStop() {
super.onStop();
if( 1500 < System.currentTimeMillis() - getApp().lastForegroundTransition )
getApp().isInBackground = true;
}
protected SingletonApplication getApp(){
return (SingletonApplication)getApplication();
}
}
where the SingletonApplication
is an extension of Application
class:
public class SingletonApplication extends Application {
public boolean isInBackground = false;
public long lastForegroundTransition = 0;
}
This is a working example :
RegexpExample.java
package org.regexp.replace;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexpExample
{
public static void main(String[] args)
{
String string = "var1[value1], var2[value2], var3[value3]";
Pattern pattern = Pattern.compile("(\\[)(.*?)(\\])");
Matcher matcher = pattern.matcher(string);
List<String> listMatches = new ArrayList<String>();
while(matcher.find())
{
listMatches.add(matcher.group(2));
}
for(String s : listMatches)
{
System.out.println(s);
}
}
}
It displays :
value1
value2
value3
For Windows 10/Framework 4.7, I had to turn on HTTP Activation through the following method:
For Jersey 1.X
TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {}
public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {}
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
// or you can return null too
return new java.security.cert.X509Certificate[0];
}
}};
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, trustAllCerts, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
public boolean verify(String string, SSLSession sslSession) {
return true;
}
});
If you really to assign values (as opposed to initialize), you can do it like this:
GLfloat coordinates[8];
static const GLfloat coordinates_defaults[8] = {1.0f, 0.0f, 1.0f ....};
...
memcpy(coordinates, coordinates_defaults, sizeof(coordinates_defaults));
return coordinates;
I know this was asked awhile back, but I found a comprehensive list of the virtual keyboard key codes right in MSDN, for use in C/C++. This also includes the mouse events. Note it is different than the javascript key codes (I noticed it around the VK_OEM section).
Here's the link:
http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731(v=vs.85).aspx
The answer you selected is correct, however if you are using a sorting table it will crash since rowInfo will became undefined as you search, would recommend using this function instead
getTrGroupProps={(state, rowInfo, column, instance) => {
if (rowInfo !== undefined) {
return {
onClick: (e, handleOriginal) => {
console.log('It was in this row:', rowInfo)
this.setState({
firstNameState: rowInfo.row.firstName,
lastNameState: rowInfo.row.lastName,
selectedIndex: rowInfo.original.id
})
},
style: {
cursor: 'pointer',
background: rowInfo.original.id === this.state.selectedIndex ? '#00afec' : 'white',
color: rowInfo.original.id === this.state.selectedIndex ? 'white' : 'black'
}
}
}}
}
Remember the IDIOM -
READ - MODIFY- WRITE this you can't achieve with volatile
If you're using jQuery 1.5, then statusCode
will work.
If you're using jQuery 1.4, try this:
error: function(jqXHR, textStatus, errorThrown) {
alert(jqXHR.status);
alert(textStatus);
alert(errorThrown);
}
You should see the status code from the first alert.
I found git here
C:\Users\<User>\AppData\Local\GitHubDesktop\app-0.5.8\resources\app\git\cmd\git.exe
You have to write file name (git.exe) in the end of path otherwise it will give an error=5
Or you can check here also.
C:\Program Files\Git\bin\git.exe
If the two
controller is nested in One
controller.
Then you can simply call:
$scope.parentmethod();
Angular will search for parentmethod
function starting with current scope and up until it will reach the rootScope
.
I've been searching for a simpler solution using only loops and if statements, and this is what I came up with. The program also works with negative integers and correctly rejects any mixed inputs that may contain both integers and other characters.
#include <stdio.h>
#include <stdlib.h> // Used for atoi() function
#include <string.h> // Used for strlen() function
#define TRUE 1
#define FALSE 0
int main(void)
{
char n[10]; // Limits characters to the equivalent of the 32 bits integers limit (10 digits)
int intTest;
printf("Give me an int: ");
do
{
scanf(" %s", n);
intTest = TRUE; // Sets the default for the integer test variable to TRUE
int i = 0, l = strlen(n);
if (n[0] == '-') // Tests for the negative sign to correctly handle negative integer values
i++;
while (i < l)
{
if (n[i] < '0' || n[i] > '9') // Tests the string characters for non-integer values
{
intTest = FALSE; // Changes intTest variable from TRUE to FALSE and breaks the loop early
break;
}
i++;
}
if (intTest == TRUE)
printf("%i\n", atoi(n)); // Converts the string to an integer and prints the integer value
else
printf("Retry: "); // Prints "Retry:" if tested FALSE
}
while (intTest == FALSE); // Continues to ask the user to input a valid integer value
return 0;
}
(Is it because this is Java and therefore I shouldn't be doing evil nonportable obsolete things like touching my environment?)
I think you've hit the nail on the head.
A possible way to ease the burden would be to factor out a method
void setUpEnvironment(ProcessBuilder builder) {
Map<String, String> env = builder.environment();
// blah blah
}
and pass any ProcessBuilder
s through it before starting them.
Also, you probably already know this, but you can start more than one process with the same ProcessBuilder
. So if your subprocesses are the same, you don't need to do this setup over and over.
Getting the friends like @nfvs describes is a good way. It outputs a multi-dimensional array with all friends with attributes id and name (ordered by id). You can see the friends photos like this:
foreach ($friends as $key=>$value) {
echo count($value) . ' Friends';
echo '<hr />';
echo '<ul id="friends">';
foreach ($value as $fkey=>$fvalue) {
echo '<li><img src="https://graph.facebook.com/' . $fvalue->id . '/picture" title="' . $fvalue->name . '"/></li>';
}
echo '</ul>';
}
You can just use Lombok with access level PRIVATE in @NoArgsConstructor annotation to avoid unnecessary initialization.
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class FilePathHelper {
// your code
}
No need to use regex .... Just use list slicing ...
string="(tidtkdgkxkxlgxlhxl) ¥£%#_¥#_¥#_¥#"
print(string[string.find("(")+1:string.find(")")])
Which programming language are you using? May be you just need to escape the backslash like "[^\\s-]"
It takes keyword arguments for the variables:
url_for('add', variable=foo)
I also faced this type of issue.I am using tomcat server then i put endorsed folder in tomcat then its start working.And also i replaced JDK1.6 with 1.7 then also its working.Finally i learn SSL then I resolved this type of issues.First you need to download the certificates from that servie provider server.then you are handshake is successfull. 1.Try to put endorsed folder in your server Next way 2.use jdk1.7
Next 3.Try to download valid certificates using SSL
For me only revert --depth infinity option fixed Svn's directory remains in confict problem:
svn revert --depth infinity "<directory name>"
svn update "<directory name>"
—
:: —
:: \u2014
When representing the m-dash in a JavaScript text string for output to HTML, note that it will be represented by its unicode value. There are cases when ampersand characters ('&') will not be resolved—notably certain contexts within JSX. In this case, neither —
nor —
will work. Instead you need to use the Unicode escape sequence: \u2014
.
For example, when implementing a render()
method to output text from a JavaScript variable:
render() {
let text='JSX transcoders will preserve the & character—to '
+ 'protect from possible script hacking and cross-site hacks.'
return (
<div>{text}</div>
)
}
This will output:
<div>JSX transcoders will preserve the & character—to protect from possible script hacking and cross-site hacks.</div>
Instead of the &
– prefixed representation, you should use \u2014:
let text='JSX transcoders will preserve the & character\u2014to …'
Deprecated answer (Spring Data JPA <=1.6.x):
@Modifying
annotation to the rescue. You will need to provide your custom SQL behaviour though.
public interface UserRepository extends JpaRepository<User, Long> {
@Modifying
@Query("delete from User u where u.firstName = ?1")
void deleteUsersByFirstName(String firstName);
}
Update:
In modern versions of Spring Data JPA (>=1.7.x) query derivation for delete
, remove
and count
operations is accessible.
public interface UserRepository extends CrudRepository<User, Long> {
Long countByFirstName(String firstName);
Long deleteByFirstName(String firstName);
List<User> removeByFirstName(String firstName);
}
All current answers provide the offset differece at current time, not at a given date.
moment(date).utcOffset()
returns the time difference in minutes between browser time and UTC at the date passed as argument (or today, if no date passed).
Here's a function to parse correct offset at the picked date:
function getUtcOffset(date) {
return moment(date)
.subtract(
moment(date).utcOffset(),
'minutes')
.utc()
}
Concatenate with & operator
Dim str as String 'no need to create a string instance
str = "Hello " & "World"
You can concate with the + operator as well but you can get yourself into trouble when trying to concatenate numbers.
Concatenate with String.Concat()
str = String.Concat("Hello ", "World")
Useful when concatenating array of strings
StringBuilder.Append()
When concatenating large amounts of strings use StringBuilder, it will result in much better performance.
Dim sb as new System.Text.StringBuilder()
str = sb.Append("Hello").Append(" ").Append("World").ToString()
Strings in .NET are immutable, resulting in a new String object being instantiated for every concatenation as well a garbage collection thereof.
Maybe it's too late but i found a solution:
You have to edit in the build.gradle
either the compileSdkVersion
--> to lastest (now it is 28). Like that:
android {
compileSdkVersion 28
defaultConfig {
applicationId "NAME_OF_YOUR_PROJECT_DIRECTORY"
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
or you can change the version of implementation:
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
api 'com.android.support:design:27.+'
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
In the other question I suggested autoexnt. That is also possible in this situation. Just set the service to run manually (ie not automatic at startup). When you want to run your batch, modify the autoexnt.bat file to call the batch file you want, and start the autoexnt service.
The batchfile to start this, can look like this (untested):
echo call c:\path\to\batch.cmd %* > c:\windows\system32\autoexnt.bat
net start autoexnt
Note that batch files started this way run as the system user, which means you do not have access to network shares automatically. But you can use net use to connect to a remote server.
You have to download the Windows 2003 Resource Kit to get it. The Resource Kit can also be installed on other versions of windows, like Windows XP.
ps -eo pid,etime,cmd|sort -n -k2
if (!file_exists('http://example.com/images/thumbnail_1286954822.jpg')) {
$filefound = '0';
}
To show a problem is NP complete, you need to:
In other words, given some information C
, you can create a polynomial time algorithm V
that will verify for every possible input X
whether X
is in your domain or not.
Prove that the problem of vertex covers (that is, for some graph G
, does it have a vertex cover set of size k
such that every edge in G
has at least one vertex in the cover set?) is in NP:
our input X
is some graph G
and some number k
(this is from the problem definition)
Take our information C
to be "any possible subset of vertices in graph G
of size k
"
Then we can write an algorithm V
that, given G
, k
and C
, will return whether that set of vertices is a vertex cover for G
or not, in polynomial time.
Then for every graph G
, if there exists some "possible subset of vertices in G
of size k
" which is a vertex cover, then G
is in NP
.
Note that we do not need to find C
in polynomial time. If we could, the problem would be in `P.
Note that algorithm V
should work for every G
, for some C
. For every input there should exist information that could help us verify whether the input is in the problem domain or not. That is, there should not be an input where the information doesn't exist.
This involves getting a known NP-complete problem like SAT, the set of boolean expressions in the form:
(A or B or C) and (D or E or F) and ...
where the expression is satisfiable, that is there exists some setting for these booleans, which makes the expression true.
Then reduce the NP-complete problem to your problem in polynomial time.
That is, given some input X
for SAT
(or whatever NP-complete problem you are using), create some input Y
for your problem, such that X
is in SAT if and only if Y
is in your problem. The function f : X -> Y
must run in polynomial time.
In the example above, the input Y
would be the graph G
and the size of the vertex cover k
.
For a full proof, you'd have to prove both:
that X
is in SAT
=> Y
in your problem
and Y
in your problem => X
in SAT
.
marcog's answer has a link with several other NP-complete problems you could reduce to your problem.
Footnote: In step 2 (Prove it is NP-hard), reducing another NP-hard (not necessarily NP-complete) problem to the current problem will do, since NP-complete problems are a subset of NP-hard problems (that are also in NP).
In addition to Harry's answer, I think it's crucial to add/emphasize that :last-child will not work if the element is not the VERY LAST element in a container. For whatever reason it took me hours to realize that, and even though Harry's answer is very thorough I couldn't extract that information from "The last-child selector is used to select the last child element of a parent."
Suppose this is my selector: a:last-child {}
This works:
<div>
<a></a>
<a>This will be selected</a>
</div>
This doesn't:
<div>
<a></a>
<a>This will no longer be selected</a>
<div>This is now the last child :'( </div>
</div>
It doesn't because the a
element is not the last element inside its parent.
It may be obvious, but it was not for me...
Although the accepted answer is correct but if you are just trying to upload your image to cloudinary, there's a better way:
Map upload = cloudinary.uploader().upload(multipartFile.getBytes(), ObjectUtils.emptyMap());
Where multipartFile is your org.springframework.web.multipart.MultipartFile.
Setting the underlying socket ReceiveTimeout
property did the trick. You can access it like this: yourTcpClient.Client.ReceiveTimeout
. You can read the docs for more information.
Now the code will only "sleep" as long as needed for some data to arrive in the socket, or it will raise an exception if no data arrives, at the beginning of a read operation, for more than 20ms. I can tweak this timeout if needed. Now I'm not paying the 20ms price in every iteration, I'm only paying it at the last read operation. Since I have the content-length of the message in the first bytes read from the server I can use it to tweak it even more and not try to read if all expected data has been already received.
I find using ReceiveTimeout much easier than implementing asynchronous read... Here is the working code:
string SendCmd(string cmd, string ip, int port)
{
var client = new TcpClient(ip, port);
var data = Encoding.GetEncoding(1252).GetBytes(cmd);
var stm = client.GetStream();
stm.Write(data, 0, data.Length);
byte[] resp = new byte[2048];
var memStream = new MemoryStream();
var bytes = 0;
client.Client.ReceiveTimeout = 20;
do
{
try
{
bytes = stm.Read(resp, 0, resp.Length);
memStream.Write(resp, 0, bytes);
}
catch (IOException ex)
{
// if the ReceiveTimeout is reached an IOException will be raised...
// with an InnerException of type SocketException and ErrorCode 10060
var socketExept = ex.InnerException as SocketException;
if (socketExept == null || socketExept.ErrorCode != 10060)
// if it's not the "expected" exception, let's not hide the error
throw ex;
// if it is the receive timeout, then reading ended
bytes = 0;
}
} while (bytes > 0);
return Encoding.GetEncoding(1252).GetString(memStream.ToArray());
}
You have a truncated array representation. Let's look at a full example:
>>> a = np.zeros((2, 3, 4))
>>> a
array([[[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.]],
[[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.]]])
Arrays in NumPy are printed as the word array
followed by structure, similar to embedded Python lists. Let's create a similar list:
>>> l = [[[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.]],
[[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.],
[ 0., 0., 0., 0.]]]
>>> l
[[[0.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0]],
[[0.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0], [0.0, 0.0, 0.0, 0.0]]]
The first level of this compound list l
has exactly 2 elements, just as the first dimension of the array a
(# of rows). Each of these elements is itself a list with 3 elements, which is equal to the second dimension of a
(# of columns). Finally, the most nested lists have 4 elements each, same as the third dimension of a
(depth/# of colors).
So you've got exactly the same structure (in terms of dimensions) as in Matlab, just printed in another way.
Some caveats:
Matlab stores data column by column ("Fortran order"), while NumPy by default stores them row by row ("C order"). This doesn't affect indexing, but may affect performance. For example, in Matlab efficient loop will be over columns (e.g. for n = 1:10 a(:, n) end
), while in NumPy it's preferable to iterate over rows (e.g. for n in range(10): a[n, :]
-- note n
in the first position, not the last).
If you work with colored images in OpenCV, remember that:
2.1. It stores images in BGR format and not RGB, like most Python libraries do.
2.2. Most functions work on image coordinates (x, y
), which are opposite to matrix coordinates (i, j
).
You can create a custom label with name UnderlinedLabel and edit drawRect function.
#import "UnderlinedLabel.h"
@implementation UnderlinedLabel
- (void)drawRect:(CGRect)rect
{
NSString *normalTex = self.text;
NSDictionary *underlineAttribute = @{NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle)};
self.attributedText = [[NSAttributedString alloc] initWithString:normalTex
attributes:underlineAttribute];
[super drawRect:rect];
}
If you are trying to automate Excel, you probably shouldn't be opening a Word document and using the Word automation ;)
Check this out, it should get you started,
http://www.codeproject.com/KB/office/package.aspx
And here is some code. It is taken from some of my code and has a lot of stuff deleted, so it doesn't do anything and may not compile or work exactly, but it should get you going. It is oriented toward reading, but should point you in the right direction.
Microsoft.Office.Interop.Excel.Worksheet sheet = newWorkbook.ActiveSheet;
if ( sheet != null )
{
Microsoft.Office.Interop.Excel.Range range = sheet.UsedRange;
if ( range != null )
{
int nRows = usedRange.Rows.Count;
int nCols = usedRange.Columns.Count;
foreach ( Microsoft.Office.Interop.Excel.Range row in usedRange.Rows )
{
string value = row.Cells[0].FormattedValue as string;
}
}
}
You can also do
Microsoft.Office.Interop.Excel.Sheets sheets = newWorkbook.ExcelSheets;
if ( sheets != null )
{
foreach ( Microsoft.Office.Interop.Excel.Worksheet sheet in sheets )
{
// Do Stuff
}
}
And if you need to insert rows/columns
// Inserts a new row at the beginning of the sheet
Microsoft.Office.Interop.Excel.Range a1 = sheet.get_Range( "A1", Type.Missing );
a1.EntireRow.Insert( Microsoft.Office.Interop.Excel.XlInsertShiftDirection.xlShiftDown, Type.Missing );
You can use .eq()
and .after()
like this:
$('#my_table > tbody > tr').eq(i-1).after(html);
The indexes are 0 based, so to be the 4th row, you need i-1
, since .eq(3)
would be the 4th row, you need to go back to the 3rd row (2
) and insert .after()
that.
Often when people are looking for "timezones", what will suffice is just "UTC offset". e.g., their server is in UTC+5 and they want to know that their client is running in UTC-8.
In plain old javascript (new Date()).getTimezoneOffset()/60
will return the current number of hours offset from UTC.
It's worth noting a possible "gotcha" in the sign of the getTimezoneOffset()
return value (from MDN docs):
The time-zone offset is the difference, in minutes, between UTC and local time. Note that this means that the offset is positive if the local timezone is behind UTC and negative if it is ahead. For example, for time zone UTC+10:00 (Australian Eastern Standard Time, Vladivostok Time, Chamorro Standard Time), -600 will be returned.
However, I recommend you use the day.js for time/date related Javascript code. In which case you can get an ISO 8601 formatted UTC offset by running:
> dayjs().format("Z")
"-08:00"
It probably bears mentioning that the client can easily falsify this information.
(Note: this answer originally recommended https://momentjs.com/, but dayjs is a more modern, smaller alternative.)
if {le_gur_bond.gur1}="" or IsNull({le_gur_bond.gur1}) Then
""
else
"and " + {le_gur_bond.gur2} + " of "+ {le_gur_bond.grr_2_address2}
The short answer is that setting grid-auto-rows: 1fr;
on the grid container solves what was asked.
Although that did work, it took out the entire background colour as well. I was looking for a way to do just the border and just replace that XML layout code with this one and I was good to go!
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke android:width="4dp" android:color="#FF00FF00" />
<padding android:left="7dp" android:top="7dp"
android:right="7dp" android:bottom="7dp" />
<corners android:radius="4dp" />
</shape>
I wouldn't go with MSTest. Although it's probably the most future proof of the frameworks with Microsoft behind it's not the most flexible solution. It won't run stand alone without some hacks. So running it on a build server other than TFS without installing Visual Studio is hard. The visual studio test-runner is actually slower than Testdriven.Net + any of the other frameworks. And because the releases of this framework are tied to releases of Visual Studio there are less updates and if you have to work with an older VS you're tied to an older MSTest.
I don't think it matters a lot which of the other frameworks you use. It's really easy to switch from one to another.
I personally use XUnit.Net or NUnit depending on the preference of my coworkers. NUnit is the most standard. XUnit.Net is the leanest framework.
Save the count as you go - and use validation to enforce it. I hacked this together - for keeping a count of unique votes and counts which keeps coming up!. But this time I have tested my suggestion! (notwithstanding cut/paste errors!).
The 'trick' here is to use the node priority to as the vote count...
The data is:
vote/$issueBeingVotedOn/user/$uniqueIdOfVoter = thisVotesCount, priority=thisVotesCount vote/$issueBeingVotedOn/count = 'user/'+$idOfLastVoter, priority=CountofLastVote
,"vote": {
".read" : true
,".write" : true
,"$issue" : {
"user" : {
"$user" : {
".validate" : "!data.exists() &&
newData.val()==data.parent().parent().child('count').getPriority()+1 &&
newData.val()==newData.GetPriority()"
user can only vote once && count must be one higher than current count && data value must be same as priority.
}
}
,"count" : {
".validate" : "data.parent().child(newData.val()).val()==newData.getPriority() &&
newData.getPriority()==data.getPriority()+1 "
}
count (last voter really) - vote must exist and its count equal newcount, && newcount (priority) can only go up by one.
}
}
Test script to add 10 votes by different users (for this example, id's faked, should user auth.uid in production). Count down by (i--) 10 to see validation fail.
<script src='https://cdn.firebase.com/v0/firebase.js'></script>
<script>
window.fb = new Firebase('https:...vote/iss1/');
window.fb.child('count').once('value', function (dss) {
votes = dss.getPriority();
for (var i=1;i<10;i++) vote(dss,i+votes);
} );
function vote(dss,count)
{
var user='user/zz' + count; // replace with auth.id or whatever
window.fb.child(user).setWithPriority(count,count);
window.fb.child('count').setWithPriority(user,count);
}
</script>
The 'risk' here is that a vote is cast, but the count not updated (haking or script failure). This is why the votes have a unique 'priority' - the script should really start by ensuring that there is no vote with priority higher than the current count, if there is it should complete that transaction before doing its own - get your clients to clean up for you :)
The count needs to be initialised with a priority before you start - forge doesn't let you do this, so a stub script is needed (before the validation is active!).
imho: Apache HTTP Client
usage example:
import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.methods.*;
import org.apache.commons.httpclient.params.HttpMethodParams;
import java.io.*;
public class HttpClientTutorial {
private static String url = "http://www.apache.org/";
public static void main(String[] args) {
// Create an instance of HttpClient.
HttpClient client = new HttpClient();
// Create a method instance.
GetMethod method = new GetMethod(url);
// Provide custom retry handler is necessary
method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
new DefaultHttpMethodRetryHandler(3, false));
try {
// Execute the method.
int statusCode = client.executeMethod(method);
if (statusCode != HttpStatus.SC_OK) {
System.err.println("Method failed: " + method.getStatusLine());
}
// Read the response body.
byte[] responseBody = method.getResponseBody();
// Deal with the response.
// Use caution: ensure correct character encoding and is not binary data
System.out.println(new String(responseBody));
} catch (HttpException e) {
System.err.println("Fatal protocol violation: " + e.getMessage());
e.printStackTrace();
} catch (IOException e) {
System.err.println("Fatal transport error: " + e.getMessage());
e.printStackTrace();
} finally {
// Release the connection.
method.releaseConnection();
}
}
}
some highlight features:
You can do float('nan')
to get NaN.
If you're using NotificationCompat.Builder
(a part of android.support.v4
) then simply call its object's method setAutoCancel
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setAutoCancel(true);
Some guys were reporting that setAutoCancel()
did not work for them, so you may try this way as well
builder.getNotification().flags |= Notification.FLAG_AUTO_CANCEL;
Note that the method getNotification()
has been deprecated!!!
After enabling "SQL Server and Windows Authentication mode"(check above answers on how to), navigate to the following.
Finally restart the SQL Server.
As @Musa comments it, it seems that the reason is that:
Postman doesn't care about SOP, it's a dev tool not a browser
By the way here's a chrome extension in order to make it work on your browser (this one is for chrome, but you can find either for FF or Safari).
Check here if you want to learn more about Cross-Origin and why it's working for extensions.
On macOS, you can use DTrace instead. The "Instruments" app is a nice GUI for that, it comes with XCode afaik.
Answer covering Java >= 9:
For Java 9+, the JVM option needs a slight change by prefixing the address with the IP address of the machine hosting the JVM, or just *
:
-agentlib:jdwp=transport=dt_socket,server=y,address=*:8000,suspend=n
This is due to a change noted in https://www.oracle.com/technetwork/java/javase/9-notes-3745703.html#JDK-8041435.
For Java < 9, the port number is enough to connect.
all
is one option:
> A <- c("A", "B", "C", "D")
> B <- A
> C <- c("A", "C", "C", "E")
> all(A==B)
[1] TRUE
> all(A==C)
[1] FALSE
But you may have to watch out for recycling:
> D <- c("A","B","A","B")
> E <- c("A","B")
> all(D==E)
[1] TRUE
> all(length(D)==length(E)) && all(D==E)
[1] FALSE
The documentation for length
says it currently only outputs an integer of length 1, but that it may change in the future, so that's why I wrapped the length test in all
.
First of all make sure you enabled Virtualization Technology in your BIOS. After restarting your computer press F1-F12 on your keyboard and find this option.
Make sure you disabled Hyper-V in your Windows 7/Windows 8. You can turn it off in Control Panel -> Programs -> Windows functions
You can try to disable your antivirus program for the whole installation process. Remember to restore all antivirus services after installing HAXM.
Some people recommend cold boot which is:
Unfortunately this step didn't work for me
All you have to do is to download the package, unzip it, put it together with HAXM installator file and run .cmd file included in the package - remember, start it as an Administrator.
I had a lot of problems with installing HAXM and only the last step helped me.
Works starting with windows XP, not available in win 2000 or lower:
This is the quickest way to do it:
Process.Start("shutdown","/s /t 0");
Otherwise use P/Invoke or WMI like others have said.
Edit: how to avoid creating a window
var psi = new ProcessStartInfo("shutdown","/s /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
I had to encounter a situation as such, and simply, the
str_replace("\/","/",$variable)
did work for me.
When plotting a plot using matplotlib:
How to remove the box of the legend?
plt.legend(frameon=False)
How to change the color of the border of the legend box?
leg = plt.legend()
leg.get_frame().set_edgecolor('b')
How to remove only the border of the box of the legend?
leg = plt.legend()
leg.get_frame().set_linewidth(0.0)
normaly is better image store in public folder (because it has write permission already that you can use when I upload images to it)
public
upload_media
photos
image.png
$image = public_path() . '/upload_media/photos/image.png'; // destination path
view PHP
<img src="<?= $image ?>">
View blade
<img src="{{ $image }}">
Googling around, the popular answer seems to be "just turn off safe mode":
SET SQL_SAFE_UPDATES = 0;
DELETE FROM instructor WHERE salary BETWEEN 13000 AND 15000;
SET SQL_SAFE_UPDATES = 1;
If I'm honest, I can't say I've ever made a habit of running in safe mode. Still, I'm not entirely comfortable with this answer since it just assumes you should go change your database config every time you run into a problem.
So, your second query is closer to the mark, but hits another problem: MySQL applies a few restrictions to subqueries, and one of them is that you can't modify a table while selecting from it in a subquery.
Quoting from the MySQL manual, Restrictions on Subqueries:
In general, you cannot modify a table and select from the same table in a subquery. For example, this limitation applies to statements of the following forms:
DELETE FROM t WHERE ... (SELECT ... FROM t ...); UPDATE t ... WHERE col = (SELECT ... FROM t ...); {INSERT|REPLACE} INTO t (SELECT ... FROM t ...);
Exception: The preceding prohibition does not apply if you are using a subquery for the modified table in the FROM clause. Example:
UPDATE t ... WHERE col = (SELECT * FROM (SELECT ... FROM t...) AS _t ...);
Here the result from the subquery in the FROM clause is stored as a temporary table, so the relevant rows in t have already been selected by the time the update to t takes place.
That last bit is your answer. Select target IDs in a temporary table, then delete by referencing the IDs in that table:
DELETE FROM instructor WHERE id IN (
SELECT temp.id FROM (
SELECT id FROM instructor WHERE salary BETWEEN 13000 AND 15000
) AS temp
);
Now there is the pandas_profiling
package, which is a more complete alternative to df.describe()
.
If your pandas dataframe is df
, the below will return a complete analysis including some warnings about missing values, skewness, etc. It presents histograms and correlation plots as well.
import pandas_profiling
pandas_profiling.ProfileReport(df)
See the example notebook detailing the usage.
Building on @P-Lapointe solution, but making it extremely easy, you could use the maximum values from your data using max()
and then you re-use those maximum values to set the legend
xy coordinates. To make sure you don't get beyond the borders, you set up ylim
slightly over the maximum values.
a=c(rnorm(1000))
b=c(rnorm(1000))
par(mfrow=c(1,2))
plot(a,ylim=c(0,max(a)+1))
legend(x=max(a)+0.5,legend="a",pch=1)
plot(a,b,ylim=c(0,max(b)+1),pch=2)
legend(x=max(b)-1.5,y=max(b)+1,legend="b",pch=2)
So there are few places where terminal looks for commands. This places are stored in your $PATH
variable. Think of it as a global variable where terminal iterates over to look up for any command. This are usually binaries look how /bin folder is usually referenced.
/bin
folder has lots of executable files inside it. Turns out this are command. This different folder locations are stored inside one Global variable i.e. $PATH
separated by :
Now usually programs upon installation takes care of updating PATH
& telling your terminal that hey i can be all commands inside my bin
folder.
Turns out MySql doesn't do it upon install so we manually have to do it.
We do it by following command,
export PATH=$PATH:/usr/local/mysql/bin
If you break it down, export
is self explanatory. Think of it as an assignment. So export
a variable PATH
with value old $PATH
concat with new bin
i.e. /usr/local/mysql/bin
This way after executing it all the commands inside /usr/local/mysql/bin
are available to us.
There is a small catch here. Think of one terminal window as one instance of program and maybe something like $PATH
is class variable ( maybe ). Note this is pure assumption. So upon close we lose the new assignment. And if we reopen terminal we won't have access to our command again because last when we exported, it was stored in primary memory which is volatile.
Now we need to have our mysql binaries exported every-time we use terminal. So we have to persist concat in our path.
You might be aware that our terminal using something called dotfiles
to load configuration on terminal initialisation. I like to think of it's as sets of thing passed to constructer every-time a new instance of terminal is created ( Again an assumption but close to what it might be doing ). So yes by now you get the point what we are going todo.
.bash_profile
is one of the primary known dotfile
.
So in following command,
echo 'export PATH=$PATH:/usr/local/mysql/bin' >> ~/.bash_profile
What we are doing is saving result of echo
i.e. output string to ~/.bash_profile
So now as we noted above every-time we open terminal or instance of terminal our dotfiles
are loaded. So .bash_profile
is loaded respectively and export
that we appended above is run & thus a our global $PATH
gets updated and we get all the commands inside /usr/local/mysql/bin
.
P.s.
if you are not running first command export directly but just running second in order to persist it? Than for current running instance of terminal you have to,
source ~/.bash_profile
This tells our terminal to reload that particular file.
Could you run a checksum of some sort on the result and store that locally? Then when your application queries the database, you can compare its checksum and determine if you should import it?
It looks like you may be able to use the ORA_HASH function to accomplish this.
Update: Another good resource: 10g’s ORA_HASH function to determine if two Oracle tables’ data are equal
They do different things. Use INSERT
when the table exists. Use SELECT INTO
when it does not.
Yes. INSERT
with no table hints is normally logged. SELECT INTO
is minimally logged assuming proper trace flags are set.
In my experience SELECT INTO
is most commonly used with intermediate data sets, like #temp
tables, or to copy out an entire table like for a backup. INSERT INTO
is used when you insert into an existing table with a known structure.
EDIT
To address your edit, they do different things. If you are making a table and want to define the structure use CREATE TABLE
and INSERT
. Example of an issue that can be created: You have a small table with a varchar field. The largest string in your table now is 12 bytes. Your real data set will need up to 200 bytes. If you do SELECT INTO
from your small table to make a new one, the later INSERT
will fail with a truncation error because your fields are too small.
The consequence of this is that you may need a rather insane-looking query, e. g.,
SELECT [dbo].[tblTimeSheetExportFiles].[lngRecordID] AS lngRecordID
,[dbo].[tblTimeSheetExportFiles].[vcrSourceWorkbookName] AS vcrSourceWorkbookName
,[dbo].[tblTimeSheetExportFiles].[vcrImportFileName] AS vcrImportFileName
,[dbo].[tblTimeSheetExportFiles].[dtmLastWriteTime] AS dtmLastWriteTime
,[dbo].[tblTimeSheetExportFiles].[lngNRecords] AS lngNRecords
,[dbo].[tblTimeSheetExportFiles].[lngSizeOnDisk] AS lngSizeOnDisk
,[dbo].[tblTimeSheetExportFiles].[lngLastIdentity] AS lngLastIdentity
,[dbo].[tblTimeSheetExportFiles].[dtmImportCompletedTime] AS dtmImportCompletedTime
,MIN ( [tblTimeRecords].[dtmActivity_Date] ) AS dtmPeriodFirstWorkDate
,MAX ( [tblTimeRecords].[dtmActivity_Date] ) AS dtmPeriodLastWorkDate
,SUM ( [tblTimeRecords].[decMan_Hours_Actual] ) AS decHoursWorked
,SUM ( [tblTimeRecords].[decAdjusted_Hours] ) AS decHoursBilled
FROM [dbo].[tblTimeSheetExportFiles]
LEFT JOIN [dbo].[tblTimeRecords]
ON [dbo].[tblTimeSheetExportFiles].[lngRecordID] = [dbo].[tblTimeRecords].[lngTimeSheetExportFile]
GROUP BY [dbo].[tblTimeSheetExportFiles].[lngRecordID]
,[dbo].[tblTimeSheetExportFiles].[vcrSourceWorkbookName]
,[dbo].[tblTimeSheetExportFiles].[vcrImportFileName]
,[dbo].[tblTimeSheetExportFiles].[dtmLastWriteTime]
,[dbo].[tblTimeSheetExportFiles].[lngNRecords]
,[dbo].[tblTimeSheetExportFiles].[lngSizeOnDisk]
,[dbo].[tblTimeSheetExportFiles].[lngLastIdentity]
,[dbo].[tblTimeSheetExportFiles].[dtmImportCompletedTime]
Since the primary table is a summary table, its primary key handles the only grouping or ordering that is truly necessary. Hence, the GROUP BY clause exists solely to satisfy the query parser.
The #
part gives you a 0x
in the output string. The 0
and the x
count against your "8" characters listed in the 08
part. You need to ask for 10 characters if you want it to be the same.
int i = 7;
printf("%#010x\n", i); // gives 0x00000007
printf("0x%08x\n", i); // gives 0x00000007
printf("%#08x\n", i); // gives 0x000007
Also changing the case of x
, affects the casing of the outputted characters.
printf("%04x", 4779); // gives 12ab
printf("%04X", 4779); // gives 12AB
hi friend please try this expression your report
="Page " + Globals!PageNumber.ToString() + " of " + Globals!OverallTotalPages.ToString() + vbcrlf + "Generated: " + Globals!ExecutionTime.ToString()
If the purpose is to obtain a bitmap, this is very simple:
Canvas canvas = new Canvas();
canvas.setBitmap(image);
canvas.drawBitmap(image2, new Matrix(), null);
In the end, image will contain the overlap of image and image2.
The answers so far tell you how to find existing branches:
git branch -r
Or repositories for the same project [see note below]:
git remote -v
There is another case. You might want to know about other project repositories hosted on the same server.
To discover that information, I use SSH or PuTTY to log into to host and ls
to find the directories containing the other repositories. For example, if I cloned a repository by typing:
git clone ssh://git.mycompany.com/git/ABCProject
and want to know what else is available, I log into git.mycompany.com via SSH or PuTTY and type:
ls /git
assuming ls
says:
ABCProject DEFProject
I can use the command
git clone ssh://git.mycompany.com/git/DEFProject
to gain access to the other project.
NOTE: Usually
git remote
simply tells me aboutorigin
-- the repository from which I cloned the project.git remote
would be handy if you were collaborating with two or more people working on the same project and accessing each other's repositories directly rather than passing everything through origin.
Look into re-indexing tables in your database.
You can first find out the fragmentation level - and if it's above 10% or so you could benefit from re-indexing. If it's very high it's likely this is creating a significant performance bottle neck.
This should be done regularly.
That's simple, if you reference them by index. If you want to hide the first column, you would:
Copy code
$('#thetable tr').find('td:nth-child(1),th:nth-child(1)').toggle();
The reason I first selected all table rows and then both td's and th's that were the n'th child is so that we wouldn't have to select the table and all table rows twice. This improves script execution speed. Keep in mind, nth-child()
is 1
based, not 0
.
you need only set default value to parameters(you do not need the Route attribute):
public IHttpActionResult Get(string apc = null, string xpc = null, int? sku = null)
{ ... }
If you want to delete a single file, you must, as you found out, use the unlink()
function.
That function will delete what you pass it as a parameter : so, it's up to you to pass it the path to the file that it must delete.
For example, you'll use something like this :
unlink('/path/to/dir/filename');
Your web.xml
ends with <web-app>
, but must end with </web-app>
Which by the way is almost literally what the exception tells you.
You can use the jQuery plugin PositionCalculator
That plugin has also included collision handling (flip), so the toolbar-like menu can be placed at a visible position.
$(".placeholder").on('mouseover', function() {
var $menu = $("#menu").show();// result for hidden element would be incorrect
var pos = $.PositionCalculator( {
target: this,
targetAt: "top right",
item: $menu,
itemAt: "top left",
flip: "both"
}).calculate();
$menu.css({
top: parseInt($menu.css('top')) + pos.moveBy.y + "px",
left: parseInt($menu.css('left')) + pos.moveBy.x + "px"
});
});
for that markup:
<ul class="popup" id="menu">
<li>Menu item</li>
<li>Menu item</li>
<li>Menu item</li>
</ul>
<div class="placeholder">placeholder 1</div>
<div class="placeholder">placeholder 2</div>
Here is the fiddle: http://jsfiddle.net/QrrpB/1657/
Or you can just use <input onclick="select()">
Works perfect.
Clang supports the Address Sanitizer plugin (-faddress-sanitizer option), which can pretty much detect most bugs that Valgrind can find (does not support detection of uninitialised memory reads and memory leaks yet though). See this page for a comparison against Valgrind and other similar tools. An official Windows port is currently in progress, see Windows ASan port.
I attempted to build it myself on Windows a couple of months ago and gave up, see my related question. Things may have changed for the better now if you want to give it another go.
use Set Comprehensions {x for x in l2} or set(l2) to get set, then use List Comprehensions to get list
l2set = set(l2)
l3 = [x for x in l1 if x not in l2set]
benchmark test code:
import time
l1 = list(range(1000*10 * 3))
l2 = list(range(1000*10 * 2))
l2set = {x for x in l2}
tic = time.time()
l3 = [x for x in l1 if x not in l2set]
toc = time.time()
diffset = toc-tic
print(diffset)
tic = time.time()
l3 = [x for x in l1 if x not in l2]
toc = time.time()
difflist = toc-tic
print(difflist)
print("speedup %fx"%(difflist/diffset))
benchmark test result:
0.0015058517456054688
3.968189239501953
speedup 2635.179227x
First go to the pip documentation if not install before: http://pip.readthedocs.org/en/stable/installing/
and follow the install pip which is first download get-pip.py from https://bootstrap.pypa.io/get-pip.py
Then run the following (which may require administrator access): python get-pip.py
Use this tool http://www.javadecompilers.com/
But recently, a new wave of decompilers has forayed onto the market: Procyon, CFR, JD, Fernflower, Krakatau, Candle.
Here's a list of decompilers presented on this site:
CFR - Free, no source-code available, http://www.benf.org/other/cfr/ Author: Lee Benfield
Very well-updated decompiler! CFR is able to decompile modern Java features - Java 9 modules, Java 8 lambdas, Java 7 String switches etc. It'll even make a decent go of turning class files from other JVM langauges back into java!
JD - free for non-commercial use only, http://jd.benow.ca/ Author: Emmanuel Dupuy
Updated in 2015. Has its own visual interface and plugins to Eclipse and IntelliJ . Written in C++, so very fast. Supports Java 5.
Procyon - open-source, https://bitbucket.org/mstrobel/procyon/wiki/Java%20Decompiler Author: Mike Strobel
Fernflower - open-source, https://github.com/fesh0r/fernflower Author: Egor Ushakov
Updated in 2015. Very promising analytical Java decompiler, now becomes an integral part of IntelliJ 14. (https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler) Supports Java up to version 6 (Annotations, generics, enums)
JAD - given here only for historical reason. Free, no source-code available, jad download mirror Author: Pavel Kouznetsov
Use:
SELECT *
FROM [Janus999DB].[dbo].[tblCustomerPlay]
WHERE DatePlayed < GetDate()
AND DatePlayed > dateadd(minute, -30, GetDate())
Today (2020.06.16) I perform tests for chosen solutions on MacOs High Sierra on Chrome 83.0, Safari 13.1.1 and Firefox 77.0.
Get elements by name
getElementByName
(C) is fastest solution for all browsers for big and small arrays - however I is probably some kind of lazy-loading solution or It use some internal browser hash-cache with name-element pairsquerySelectorAll
(D) solutionGet rows by name and hide them (we exclude precalculated native solution (I) - theoretically fastest) from comparison - it is used as reference)
"default:none"
on hidden elements - but it looks that they find faster way of do it than element.style.display='none'
I perform two tests for read elements by name (A,B,C,D) and hide that elements (E,F,G,H,I)
Snippet below presents used codes
//https://stackoverflow.com/questions/1107220/how-can-i-select-an-element-by-name-with-jquery#
// https://jsbench.me/o6kbhyyvib/1
// https://jsbench.me/2fkbi9rirv/1
function A() {
return $('[name=tcol1]');
}
function B() {
return $(document.getElementsByName("tcol1"))
}
function C() {
return document.getElementsByName("tcol1")
}
function D() {
return document.querySelectorAll('[name=tcol1]')
}
function E() {
$('[name=tcol1]').hide();
}
function F() {
$(document.getElementsByName("tcol1")).hide();
}
function G() {
document.getElementsByName("tcol1").forEach(e=>e.style.display='none');
}
function H() {
document.querySelectorAll('[name=tcol1]').forEach(e=>e.style.display='none');
}
function I() {
let elArr = [...document.getElementsByName("tcol1")];
let length = elArr.length
for(let i=0; i<length; i++) elArr[i].style.display='none';
}
// -----------
// TEST
// -----------
function reset() { $('td[name=tcol1]').show(); }
[A,B,C,D].forEach(f=> console.log(`${f.name} rows: ${f().length}`)) ;
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<div>This snippet only presents used codes</div>
<table>
<tr>
<td>data1</td>
<td name="tcol1" class="bold"> data2</td>
</tr>
<tr>
<td>data1</td>
<td name="tcol1" class="bold"> data2</td>
</tr>
<tr>
<td>data1</td>
<td name="tcol1" class="bold"> data2</td>
</tr>
</table>
<button onclick="E()">E: hide</button>
<button onclick="F()">F: hide</button>
<button onclick="G()">G: hide</button>
<button onclick="H()">H: hide</button>
<button onclick="I()">I: hide</button><br>
<button onclick="reset()">reset</button>
_x000D_
Example results on Chrome
If you deleted multiple files locally and did not commit the changes, go to your local repository path, open the git shell and type.
$ git checkout HEAD .
All the deleted files before the last commit will be recovered.
Adding "." will recover all the deleted the files in the current repository, to their respective paths.
For more details checkout the documentation.
You can also check if there is a currentUser
var user = firebase.auth().currentUser;
if (user) {
// User is signed in.
} else {
// No user is signed in.
}
There is another way if all you want is the text up to the first line feed:
x='some
thing'
y=${x%$'\n'*}
After that y
will contain some
and nothing else (no line feed).
What is happening here?
We perform a parameter expansion substring removal (${PARAMETER%PATTERN}
) for the shortest match up to the first ANSI C line feed ($'\n'
) and drop everything that follows (*
).
You need nunique
:
df = df.groupby('domain')['ID'].nunique()
print (df)
domain
'facebook.com' 1
'google.com' 1
'twitter.com' 2
'vk.com' 3
Name: ID, dtype: int64
If you need to strip
'
characters:
df = df.ID.groupby([df.domain.str.strip("'")]).nunique()
print (df)
domain
facebook.com 1
google.com 1
twitter.com 2
vk.com 3
Name: ID, dtype: int64
Or as Jon Clements commented:
df.groupby(df.domain.str.strip("'"))['ID'].nunique()
You can retain the column name like this:
df = df.groupby(by='domain', as_index=False).agg({'ID': pd.Series.nunique})
print(df)
domain ID
0 fb 1
1 ggl 1
2 twitter 2
3 vk 3
The difference is that nunique()
returns a Series and agg()
returns a DataFrame.
git pull origin master
will fetch all the changes from the remote's master branch and will merge it into your local.We generally don't use git pull origin/master.We can do the same thing by git merge origin/master
.It will merge all the changes from "cached copy" of origin's master branch into your local branch.In my case git pull origin/master
is throwing the error.
a nice little script I wrote to load multiple scripts:
function scriptLoader(scripts, callback) {
var count = scripts.length;
function urlCallback(url) {
return function () {
console.log(url + ' was loaded (' + --count + ' more scripts remaining).');
if (count < 1) {
callback();
}
};
}
function loadScript(url) {
var s = document.createElement('script');
s.setAttribute('src', url);
s.onload = urlCallback(url);
document.head.appendChild(s);
}
for (var script of scripts) {
loadScript(script);
}
};
usage:
scriptLoader(['a.js','b.js'], function() {
// use code from a.js or b.js
});
string AssemblyID = Assembly.GetEntryAssembly().GetCustomAttribute<GuidAttribute>().Value;
or, VB.NET:
Dim AssemblyID As String = Assembly.GetEntryAssembly.GetCustomAttribute(Of GuidAttribute).Value
A copy-paste solution for Redis with json serialization:
def get_celery_queue_items(queue_name):
import base64
import json
# Get a configured instance of a celery app:
from yourproject.celery import app as celery_app
with celery_app.pool.acquire(block=True) as conn:
tasks = conn.default_channel.client.lrange(queue_name, 0, -1)
decoded_tasks = []
for task in tasks:
j = json.loads(task)
body = json.loads(base64.b64decode(j['body']))
decoded_tasks.append(body)
return decoded_tasks
It works with Django. Just don't forget to change yourproject.celery
.
There is a 100% mathematical test that will check if a number P
is prime or composite, called AKS Primality Test.
The concept is simple: given a number P
, if all the coefficients of (x-1)^P - (x^P-1)
are divisible by P
, then P
is a prime number, otherwise it is a composite number.
For instance, given P = 3
, would give the polynomial:
(x-1)^3 - (x^3 - 1)
= x^3 + 3x^2 - 3x - 1 - (x^3 - 1)
= 3x^2 - 3x
And the coefficients are both divisible by 3
, therefore the number is prime.
And example where P = 4
, which is NOT a prime would yield:
(x-1)^4 - (x^4-1)
= x^4 - 4x^3 + 6x^2 - 4x + 1 - (x^4 - 1)
= -4x^3 + 6x^2 - 4x
And here we can see that the coefficients 6
is not divisible by 4
, therefore it is NOT prime.
The polynomial (x-1)^P
will P+1
terms and can be found using combination. So, this test will run in O(n)
runtime, so I don't know how useful this would be since you can simply iterate over i
from 0 to p
and test for the remainder.
I didn't see any solution which is following the principal of space complexity. If list of integers has large number of elements then it's big problem.
It will be really good to remove the integer from the List<Integer> and free
the space, once it's added to List<String>.
We can use iterator to achieve the same.
List<Integer> oldList = new ArrayList<>();
oldList.add(12);
oldList.add(14);
.......
.......
List<String> newList = new ArrayList<String>(oldList.size());
Iterator<Integer> itr = oldList.iterator();
while(itr.hasNext()){
newList.add(itr.next().toString());
itr.remove();
}
In PyCharm go to
C:\Miniconda3\envs\my_env\python.exe
, where my_env is the environment you want to useAlternatively, in step 3 use C:\Miniconda3\python.exe
if you did not create any further environments (if you never invoked conda create -n my_env python=3
).
You can get a list of your current environments with conda info -e
and switch to one of them using activate my_env
.
public class RemoveRepeatedCharacters {
/**
* This method removes duplicates in a given string in one single pass.
* Keeping two indexes, go through all the elements and as long as subsequent characters match, keep
* moving the indexes in opposite directions. When subsequent characters don't match, copy value at higher index
* to (lower + 1) index.
* Time Complexity = O(n)
* Space = O(1)
*
*/
public static void removeDuplicateChars(String text) {
char[] ch = text.toCharArray();
int i = 0; //first index
for(int j = 1; j < ch.length; j++) {
while(i >= 0 && j < ch.length && ch[i] == ch[j]) {
i--;
j++;
System.out.println("i = " + i + " j = " + j);
}
if(j < ch.length) {
ch[++i] = ch[j];
}
}
//Print the final string
for(int k = 0; k <= i; k++)
System.out.print(ch[k]);
}
public static void main(String[] args) {
String text = "abccbdeefgg";
removeDuplicateChars(text);
}
}
You must have some virtual function declared in one of the parent classes and never implemented in any of the child classes. Make sure that all virtual functions are implemented somewhere in the inheritence chain. If a class's definition includes a pure virtual function that is never implemented, an instance of that class cannot ever be constructed.
.aspx
uses a full lifecycle (Init
, Load
, PreRender
) and can respond to button clicks etc.
An .ashx
has just a single ProcessRequest
method.
One simple solution:
cond1 <- df$sub == 1 & df$day == 2
cond2 <- df$sub == 3 & df$day == 4
df <- df[!(cond1 | cond2),]
This is much easier than you're making it. The text node will not have the literal string " "
in it, it'll have have the corresponding character with code 160.
function replaceNbsps(str) {
var re = new RegExp(String.fromCharCode(160), "g");
return str.replace(re, " ");
}
textNode.nodeValue = replaceNbsps(textNode.nodeValue);
UPDATE
Even easier:
textNode.nodeValue = textNode.nodeValue.replace(/\u00a0/g, " ");
I think what the questioner is after is converting the string representation of a hexadecimal value to a byte array representing that hexadecimal value.
The apache commons-codec has a class for that, Hex.
String s = "9B7D2C34A366BF890C730641E6CECF6F";
byte[] bytes = Hex.decodeHex(s.toCharArray());
This is my method:
import math
def isPrime(n):
'Returns True if n is prime, False if n is not prime. Will not work if n is 0 or 1'
# Make sure n is a positive integer
n = abs(int(n))
# Case 1: the number is 2 (prime)
if n == 2: return True
# Case 2: the number is even (not prime)
if n % 2 == 0: return False
# Case 3: the number is odd (could be prime or not)
# Check odd numbers less than the square root for possible factors
r = math.sqrt(n)
x = 3
while x <= r:
if n % x == 0: return False # A factor was found, so number is not prime
x += 2 # Increment to the next odd number
# No factors found, so number is prime
return True
To answer the original question, n**0.5 is the same as the square of root of n. You can stop checking for factors after this number because a composite number will always have a factor less than or equal to its square root. This is faster than say just checking all of the factors between 2 and n for every n, because we check fewer numbers, which saves more time as n grows.
If you are trying to use AngularJs 1.6.6 as of 21/10/2017 the following parameter works as .success and has been depleted. The .then() method takes two arguments: a response and an error callback which will be called with a response object.
$scope.login = function () {
$scope.btntext = "Please wait...!";
$http({
method: "POST",
url: '/Home/userlogin', // link UserLogin with HomeController
data: $scope.user
}).then(function (response) {
console.log("Result value is : " + parseInt(response));
data = response.data;
$scope.btntext = 'Login';
if (data == 1) {
window.location.href = '/Home/dashboard';
}
else {
alert(data);
}
}, function (error) {
alert("Failed Login");
});
The above snipit works for a login page.
NASDAQ offers 10 years of historical EOD data for each symbol
http://www.nasdaq.com/aspx/historical_quotes.aspx?symbol=AAPL&selected=AAPL
You could automate the process of downloading this data.
Would the following Macro help you?
Sub activateSheet(sheetname As String)
'activates sheet of specific name
Worksheets(sheetname).Activate
End Sub
Basically you want to make use of the .Activate function. Or you can use the .Select function like so:
Sub activateSheet(sheetname As String)
'selects sheet of specific name
Sheets(sheetname).Select
End Sub
class Program
{
double[] a = new double[] { 1, 3, 4, 8, 21, 38 };
double[] b = new double[] { 1, 7, 19, 3, 2, 24 };
double[] result;
public double[] CheckSorting()
{
for(int i = 1; i < a.Length; i++)
{
if (a[i] < a[i - 1])
result = b;
else
result = a;
}
return result;
}
static void Main(string[] args)
{
Program checkSorting = new Program();
checkSorting.CheckSorting();
Console.ReadLine();
}
}
This should work, otherwise i got the error that not all codepaths return a value. Therefor i set the result as the returned value, which is set as either B or A depending on which is true
The answers so far have covered the details, but if you don't intend to drop down to assembly, then all you have to know is that both the caller and the callee must use the same calling convention, otherwise you'll get bugs that are hard to find.
Another solution that does not involve converting to/from strings:
from math import log10
def decompose(n):
if n == 0:
return [0]
b = int(log10(n)) + 1
return [(n // (10 ** i)) % 10 for i in reversed(range(b))]
This is a known bug at MySQL.
As you can see this has been a known issue since 2008 and they have not fixed it yet!!!
WORK AROUND
You first need to create the database to import. It doesn't need any tables. Then you can import your database.
first start your MySQL command line (apply username and password if you need to)
C:\>mysql -u user -p
Create your database and exit
mysql> DROP DATABASE database;
mysql> CREATE DATABASE database;
mysql> Exit
Import your selected database from the dump file
C:\>mysql -u user -p -h localhost -D database -o < dumpfile.sql
You can replace localhost with an IP or domain for any MySQL server you want to import to. The reason for the DROP command in the mysql prompt is to be sure we start with an empty and clean database.
And another solution is Google reflections.
Quick review:
There's no need for LINQ here, just call Sort:
list.Sort();
Example code:
List<int> list = new List<int> { 5, 7, 3 };
list.Sort();
foreach (int x in list)
{
Console.WriteLine(x);
}
Result:
3
5
7
SQL Server Express editions are limited in some ways - one way is that they don't have the SQL Agent that allows you to schedule jobs.
There are a few third-party extensions that provide that capability - check out e.g.:
Double perValue = 96.57;
int roundVal= (int) Math.round(perValue);
Solved my purpose.
Without RegEx, with some must-have value checking
public static string ExtractString(string soapMessage, string tag)
{
if (string.IsNullOrEmpty(soapMessage))
return soapMessage;
var startTag = "<" + tag + ">";
int startIndex = soapMessage.IndexOf(startTag);
startIndex = startIndex == -1 ? 0 : startIndex + startTag.Length;
int endIndex = soapMessage.IndexOf("</" + tag + ">", startIndex);
endIndex = endIndex > soapMessage.Length || endIndex == -1 ? soapMessage.Length : endIndex;
return soapMessage.Substring(startIndex, endIndex - startIndex);
}
Select all text afected by this issue:
Window -> Character, click the icon next to hide the Character Window, Middle Western Features and select Left-to-right character direction.
The short answer is you inherit from the ICloneable interface and then implement the .clone function. Clone should do a memberwise copy and perform a deep copy on any member that requires it, then return the resulting object. This is a recursive operation ( it requires that all members of the class you want to clone are either value types or implement ICloneable and that their members are either value types or implement ICloneable, and so on).
For a more detailed explanation on Cloning using ICloneable, check out this article.
The long answer is "it depends". As mentioned by others, ICloneable is not supported by generics, requires special considerations for circular class references, and is actually viewed by some as a "mistake" in the .NET Framework. The serialization method depends on your objects being serializable, which they may not be and you may have no control over. There is still much debate in the community over which is the "best" practice. In reality, none of the solutions are the one-size fits all best practice for all situations like ICloneable was originally interpreted to be.
See the this Developer's Corner article for a few more options (credit to Ian).
Arrays in Java start indexing at 0. So in your example you are referring to an element that is outside the array by one.
It should probably be something like freq[Global.iParameter[2]-1]=false;
You would need to loop through the array to initialize all of it, this line only initializes the last element.
Actually, I'm pretty sure that false is default for booleans in Java, so you might not need to initialize at all.
Best Regards
Here's the ultimate shortest most responsible version that even works both AD and BC.
[drum rolls...]
<script>document.write(Date().split` `[3])</script>
That's it. 6 Bytes shorter than the accepted answer.
If you need to be ES5 compatible, you can settle for:
<script>document.write(Date().split(' ')[3])</script>
I think the better answer for this questions is
array_diff()
because it Compares array against one or more other arrays and returns the values in array that are not present in any of the other arrays.
Whereas
array_intersect() returns an array containing all the values of array that are present in all the arguments. Note that keys are preserved.
The nodejs package tecfu/tty-table can be globally installed to do precisely this:
apt-get install nodejs
npm i -g tty-table
cat data.csv | tty-table
It can also handle streams.
For more info, see the docs for terminal usage here.
Check out yowsup
https://github.com/tgalal/yowsup
Yowsup is a python library that allows you to do all the previous in your own app. Yowsup allows you to login and use the Whatsapp service and provides you with all capabilities of an official Whatsapp client, allowing you to create a full-fledged custom Whatsapp client.
A solid example of Yowsup's usage is Wazapp. Wazapp is full featured Whatsapp client that is being used by hundreds of thousands of people around the world. Yowsup is born out of the Wazapp project. Before becoming a separate project, it was only the engine powering Wazapp. Now that it matured enough, it was separated into a separate project, allowing anyone to build their own Whatsapp client on top of it. Having such a popular client as Wazapp, built on Yowsup, helped bring the project into a much advanced, stable and mature level, and ensures its continuous development and maintaince.
Yowsup also comes with a cross platform command-line frontend called yowsup-cli. yowsup-cli allows you to jump into connecting and using Whatsapp service directly from command line.
I couldn't get the above posts to do quite what I was after.
After playing around with the other replies here, I made this. It's hacky, but it works!
For this object:
var myObj = {
pageURL : "BLAH",
emailBox : {model:"emailAddress", selector:"#emailAddress"},
passwordBox: {model:"password" , selector:"#password"}
};
... this code:
// Get every value in the object into a separate array item ...
function buildArray(p_MainObj, p_Name) {
var variableList = [];
var thisVar = "";
var thisYes = false;
for (var key in p_MainObj) {
thisVar = p_Name + "." + key;
thisYes = false;
if (p_MainObj.hasOwnProperty(key)) {
var obj = p_MainObj[key];
for (var prop in obj) {
var myregex = /^[0-9]*$/;
if (myregex.exec(prop) != prop) {
thisYes = true;
variableList.push({item:thisVar + "." + prop,value:obj[prop]});
}
}
if ( ! thisYes )
variableList.push({item:thisVar,value:obj});
}
}
return variableList;
}
// Get the object items into a simple array ...
var objectItems = buildArray(myObj, "myObj");
// Now use them / test them etc... as you need to!
for (var x=0; x < objectItems.length; ++x) {
console.log(objectItems[x].item + " = " + objectItems[x].value);
}
... produces this in the console:
myObj.pageURL = BLAH
myObj.emailBox.model = emailAddress
myObj.emailBox.selector = #emailAddress
myObj.passwordBox.model = password
myObj.passwordBox.selector = #password
First make sure if the URL is actually valid (a string, not empty, good syntax), this is quick to check server side. For example, doing this first could save a lot of time:
if(!$url || !is_string($url) || ! preg_match('/^http(s)?:\/\/[a-z0-9-]+(.[a-z0-9-]+)*(:[0-9]+)?(\/.*)?$/i', $url)){
return false;
}
Make sure you only fetch the headers, not the body content:
@curl_setopt($ch, CURLOPT_HEADER , true); // we want headers
@curl_setopt($ch, CURLOPT_NOBODY , true); // we don't need body
For more details on getting the URL status http code I refer to another post I made (it also helps with following redirects):
As a whole:
$url = 'http://www.example.com';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, true); // we want headers
curl_setopt($ch, CURLOPT_NOBODY, true); // we don't need body
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT,10);
$output = curl_exec($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo 'HTTP code: ' . $httpcode;
ls
by default previews the files sorted by name. (ls
options can be used to sort by date, size, ...)
files = list(os.popen("ls"))
files = [file.strip("\n") for file in files]
Using ls
would have much better performance when the directory contains so many files.
I'm a fan of gitk
's graphical UI to visualize git repos. You can view the last item stashed with:
gitk stash
You can also use view any of your stashed changes (as listed by git stash list
). For example:
gitk stash@{2}
In the below screenshot, you can see the stash as a commit in the upper-left, when and where it came from in commit history, the list of files modified on the bottom right, and the line-by-line diff in the lower-left. All while the stash is still tucked away.
You could ignore SIGINTs after shutdown starts by calling signal.signal(signal.SIGINT, signal.SIG_IGN)
before you start your cleanup code.
Read this thread R - boolean operators && and ||.
Basically, the &
is vectorized, i.e. it acts on each element of the comparison returning a logical array with the same dimension as the input. &&
is not, returning a single logical.
Maybe try this? It seems the problem is solved after remove all the handlers in my case.
for handler in logging.root.handlers[:]:
logging.root.removeHandler(handler)
logging.basicConfig(filename='output.log', level=logging.INFO)
CSS selectors perform far better than Xpath and it is well documented in Selenium community. Here are some reasons,
However there are some situations where, you need to use xpath, for example, searching for a parent element or searching element by its text (I wouldn't recommend the later).
You can read blog from Simon here . He also recommends CSS over Xpath.
If you are testing content then do not use selectors that are dependent on the content of the elements. That will be a maintenance nightmare for every locale. Try talking with developers and use techniques that they used to externalize the text in the application, like dictionaries or resource bundles etc. Here is my blog that explains it in detail.
Thanks to @parishodak, here is the link which provides the numbers proving that CSS performance is better
When importing an existing Gradle project (one with a build.gradle
) into IntelliJ IDEA, when presented with the following screen, select Import from external model -> Gradle.
Optionally, select Auto Import on the next screen to automatically import new dependencies.
Make the the table-cell position relative, then make the inner div position absolute, with top/right/bottom/left all set to 0px.
.table-cell {
display: table-cell;
position: relative;
}
.inner-div {
position: absolute;
top: 0px;
right: 0px;
bottom: 0px;
left: 0px;
}
To show the values from 2 tables in a pre-defined way, use a VIEW
mmap
is great if you have multiple processes accessing data in a read only fashion from the same file, which is common in the kind of server systems I write. mmap
allows all those processes to share the same physical memory pages, saving a lot of memory.
mmap
also allows the operating system to optimize paging operations. For example, consider two programs; program A
which reads in a 1MB
file into a buffer creating with malloc
, and program B which mmaps
the 1MB file into memory. If the operating system has to swap part of A
's memory out, it must write the contents of the buffer to swap before it can reuse the memory. In B
's case any unmodified mmap
'd pages can be reused immediately because the OS knows how to restore them from the existing file they were mmap
'd from. (The OS can detect which pages are unmodified by initially marking writable mmap
'd pages as read only and catching seg faults, similar to Copy on Write strategy).
mmap
is also useful for inter process communication. You can mmap
a file as read / write in the processes that need to communicate and then use synchronization primitives in the mmap'd
region (this is what the MAP_HASSEMAPHORE
flag is for).
One place mmap
can be awkward is if you need to work with very large files on a 32 bit machine. This is because mmap
has to find a contiguous block of addresses in your process's address space that is large enough to fit the entire range of the file being mapped. This can become a problem if your address space becomes fragmented, where you might have 2 GB of address space free, but no individual range of it can fit a 1 GB file mapping. In this case you may have to map the file in smaller chunks than you would like to make it fit.
Another potential awkwardness with mmap
as a replacement for read / write is that you have to start your mapping on offsets of the page size. If you just want to get some data at offset X
you will need to fixup that offset so it's compatible with mmap
.
And finally, read / write are the only way you can work with some types of files. mmap
can't be used on things like pipes and ttys.
With a SimpleXml object, you can simply
$domxml = new DOMDocument('1.0');
$domxml->preserveWhiteSpace = false;
$domxml->formatOutput = true;
/* @var $xml SimpleXMLElement */
$domxml->loadXML($xml->asXML());
$domxml->save($newfile);
$xml
is your simplexml object
So then you simpleXml can be saved as a new file specified by $newfile
Test this code, I think solve your problem:
event.stopPropagation();
You need to do two things:
The code:
dtt$model <- factor(dtt$model, levels=c("mb", "ma", "mc"), labels=c("MBB", "MAA", "MCC"))
library(ggplot2)
ggplot(dtt, aes(x=year, y=V, group = model, colour = model, ymin = lower, ymax = upper)) +
geom_ribbon(alpha = 0.35, linetype=0)+
geom_line(aes(linetype=model), size = 1) +
geom_point(aes(shape=model), size=4) +
theme(legend.position=c(.6,0.8)) +
theme(legend.background = element_rect(colour = 'black', fill = 'grey90', size = 1, linetype='solid')) +
scale_linetype_discrete("Model 1") +
scale_shape_discrete("Model 1") +
scale_colour_discrete("Model 1")
However, I think this is really ugly as well as difficult to interpret. It's far better to use facets:
ggplot(dtt, aes(x=year, y=V, group = model, colour = model, ymin = lower, ymax = upper)) +
geom_ribbon(alpha=0.2, colour=NA)+
geom_line() +
geom_point() +
facet_wrap(~model)
Recently had the issue on Xcode 11 beta 2:
If your target doesn't have the "Signing & Capabilities" tab (in my case only the test target had it), open the build settings for your project and click "All" instead of "Basic"/"Customised". Find signing under the settings and make sure you've got a Development team set up.
This would be correct:
SELECT * FROM table WHERE field regexp concat_ws("|",(
"111",
"222",
"333"
));
If you need to do this on the backend you can use the following URL structure:
https://maps.googleapis.com/maps/api/geocode/json?address=[STREET_ADDRESS]&key=[YOUR_API_KEY]
Sample PHP code using curl:
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, 'https://maps.googleapis.com/maps/api/geocode/json?address=' . rawurlencode($address) . '&key=' . $api_key);
curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1);
$json = curl_exec($curl);
curl_close ($curl);
$obj = json_decode($json);
See additional documentation for more details and expected json response.
The docs provide sample output and will assist you in getting your own API key in order to be able to make requests to the Google Maps Geocoding API.
I know this is an old question, but I just want to throw this out there that you can still use File.Create("filename")"
, just add .Dispose()
to it.
File.Create("filename").Dispose();
This way it creates and closes the file for the next process to use it.
I thought I would add some server side php code to this answer for any beginners that read this post and are struggling to figure out how to receive the file on the server side and save the file to the filesystem.
I realize that this answer does not directly answer the OP's question, but since Brandon's answer is sufficient for the iOS device side of uploading and he mentions that some knowledge of php is necessary, I thought I would fill in the php gap with this answer.
Here is a class I put together with some sample usage code. Note that the files are stored in directories based on which user is uploading them. This may or may not be applicable to your use, but I thought I'd leave it in place just in case.
<?php
class upload
{
protected $user;
protected $isImage;
protected $isMovie;
protected $file;
protected $uploadFilename;
protected $uploadDirectory;
protected $fileSize;
protected $fileTmpName;
protected $fileType;
protected $fileExtension;
protected $saveFilePath;
protected $allowedExtensions;
function __construct($file, $userPointer)
{
// set the file we're uploading
$this->file = $file;
// if this is tied to a user, link the user account here
$this->user = $userPointer;
// set default bool values to false since we don't know what file type is being uploaded yet
$this->isImage = FALSE;
$this->isMovie = FALSE;
// setup file properties
if (isset($this->file) && !empty($this->file))
{
$this->uploadFilename = $this->file['file']['name'];
$this->fileSize = $this->file['file']['size'];
$this->fileTmpName = $this->file['file']['tmp_name'];
$this->fileType = $this->file['file']['type'];
}
else
{
throw new Exception('Received empty data. No file found to upload.');
}
// get the file extension of the file we're trying to upload
$tmp = explode('.', $this->uploadFilename);
$this->fileExtension = strtolower(end($tmp));
}
public function image($postParams)
{
// set default error alert (or whatever you want to return if error)
$retVal = array('alert' => '115');
// set our bool
$this->isImage = TRUE;
// set our type limits
$this->allowedExtensions = array("png");
// setup destination directory path (without filename yet)
$this->uploadDirectory = DIR_IMG_UPLOADS.$this->user->uid."/photos/";
// if user is not subscribed they are allowed only one image, clear their folder here
if ($this->user->isSubscribed() == FALSE)
{
$this->clearFolder($this->uploadDirectory);
}
// try to upload the file
$success = $this->startUpload();
if ($success === TRUE)
{
// return the image name (NOTE: this wipes the error alert set above)
$retVal = array(
'imageName' => $this->uploadFilename,
);
}
return $retVal;
}
public function movie($data)
{
// update php settings to handle larger uploads
set_time_limit(300);
// you may need to increase allowed filesize as well if your server is not set with a high enough limit
// set default return value (error code for upload failed)
$retVal = array('alert' => '92');
// set our bool
$this->isMovie = TRUE;
// set our allowed movie types
$this->allowedExtensions = array("mov", "mp4", "mpv", "3gp");
// setup destination path
$this->uploadDirectory = DIR_IMG_UPLOADS.$this->user->uid."/movies/";
// only upload the movie if the user is a subscriber
if ($this->user->isSubscribed())
{
// try to upload the file
$success = $this->startUpload();
if ($success === TRUE)
{
// file uploaded so set the new retval
$retVal = array('movieName' => $this->uploadFilename);
}
}
else
{
// return an error code so user knows this is a limited access feature
$retVal = array('alert' => '13');
}
return $retVal;
}
//-------------------------------------------------------------------------------
// Upload Process Methods
//-------------------------------------------------------------------------------
private function startUpload()
{
// see if there are any errors
$this->checkForUploadErrors();
// validate the type received is correct
$this->checkFileExtension();
// check the filesize
$this->checkFileSize();
// create the directory for the user if it does not exist
$this->createUserDirectoryIfNotExists();
// generate a local file name
$this->createLocalFileName();
// verify that the file is an uploaded file
$this->verifyIsUploadedFile();
// save the image to the appropriate folder
$success = $this->saveFileToDisk();
// return TRUE/FALSE
return $success;
}
private function checkForUploadErrors()
{
if ($this->file['file']['error'] != 0)
{
throw new Exception($this->file['file']['error']);
}
}
private function checkFileExtension()
{
if ($this->isImage)
{
// check if we are in fact uploading a png image, if not return error
if (!(in_array($this->fileExtension, $this->allowedExtensions)) || $this->fileType != 'image/png' || exif_imagetype($this->fileTmpName) != IMAGETYPE_PNG)
{
throw new Exception('Unsupported image type. The image must be of type png.');
}
}
else if ($this->isMovie)
{
// check if we are in fact uploading an accepted movie type
if (!(in_array($this->fileExtension, $this->allowedExtensions)) || $this->fileType != 'video/mov')
{
throw new Exception('Unsupported movie type. Accepted movie types are .mov, .mp4, .mpv, or .3gp');
}
}
}
private function checkFileSize()
{
if ($this->isImage)
{
if($this->fileSize > TenMB)
{
throw new Exception('The image filesize must be under 10MB.');
}
}
else if ($this->isMovie)
{
if($this->fileSize > TwentyFiveMB)
{
throw new Exception('The movie filesize must be under 25MB.');
}
}
}
private function createUserDirectoryIfNotExists()
{
if (!file_exists($this->uploadDirectory))
{
mkdir($this->uploadDirectory, 0755, true);
}
else
{
if ($this->isMovie)
{
// clear any prior uploads from the directory (only one movie file per user)
$this->clearFolder($this->uploadDirectory);
}
}
}
private function createLocalFileName()
{
$now = time();
// try to create a unique filename for this users file
while(file_exists($this->uploadFilename = $now.'-'.$this->uid.'.'.$this->fileExtension))
{
$now++;
}
// create our full file save path
$this->saveFilePath = $this->uploadDirectory.$this->uploadFilename;
}
private function clearFolder($path)
{
if(is_file($path))
{
// if there's already a file with this name clear it first
return @unlink($path);
}
elseif(is_dir($path))
{
// if it's a directory, clear it's contents
$scan = glob(rtrim($path,'/').'/*');
foreach($scan as $index=>$npath)
{
$this->clearFolder($npath);
@rmdir($npath);
}
}
}
private function verifyIsUploadedFile()
{
if (! is_uploaded_file($this->file['file']['tmp_name']))
{
throw new Exception('The file failed to upload.');
}
}
private function saveFileToDisk()
{
if (move_uploaded_file($this->file['file']['tmp_name'], $this->saveFilePath))
{
return TRUE;
}
throw new Exception('File failed to upload. Please retry.');
}
}
?>
Here's some sample code demonstrating how you might use the upload class...
// get a reference to your user object if applicable
$myUser = $this->someMethodThatFetchesUserWithId($myUserId);
// get reference to file to upload
$myFile = isset($_FILES) ? $_FILES : NULL;
// use try catch to return an error for any exceptions thrown in the upload script
try
{
// create and setup upload class
$upload = new upload($myFile, $myUser);
// trigger file upload
$data = $upload->image(); // if uploading an image
$data = $upload->movie(); // if uploading movie
// return any status messages as json string
echo json_encode($data);
}
catch (Exception $exception)
{
$retData = array(
'status' => 'FALSE',
'payload' => array(
'errorMsg' => $exception->getMessage()
),
);
echo json_encode($retData);
}
As nobody seems to have mentioned it...
svn propedit svn:ignore .
Then edit the contents of the file to specify the patterns to ignore, exit the editor and you're all done.
Caveat Emptor - Destructive commands ahead.
Mitigation - git reflog
can save you if you need it.
1) UNDO local file changes and KEEP your last commit
git reset --hard
2) UNDO local file changes and REMOVE your last commit
git reset --hard HEAD^
3) KEEP local file changes and REMOVE your last commit
git reset --soft HEAD^
/** Count max number of nonempty cells in sheet rows */
private int getColumnsCount(XSSFSheet xssfSheet) {
int result = 0;
Iterator<Row> rowIterator = xssfSheet.iterator();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
List<Cell> cells = new ArrayList<>();
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
cells.add(cellIterator.next());
}
for (int i = cells.size(); i >= 0; i--) {
Cell cell = cells.get(i-1);
if (cell.toString().trim().isEmpty()) {
cells.remove(i-1);
} else {
result = cells.size() > result ? cells.size() : result;
break;
}
}
}
return result;
}
2007 is more powerful with ribbon..:=) To add new series in chart do: Select Chart, then click Design in Chart Tools on the ribbon, On the Design ribbon, select "Select Data" in Data Group, Then you will see the button for Add to add new series.
Hope that will help.
If you're using jQuery Cookie (https://plugins.jquery.com/cookie/), you can use decimal point or fractions.
As one day is 1
, one minute would be 1 / 1440
(there's 1440 minutes in a day).
So 30 minutes is 30 / 1440 = 0.02083333
.
Final code:
$.cookie("example", "foo", { expires: 30 / 1440, path: '/' });
I've added path: '/'
so that you don't forget that the cookie is set on the current path. If you're on /my-directory/
the cookie is only set for this very directory.
An alternative ist to use the short form of "concatenate" which is either "r_[...]" or "c_[...]" as shown in the example code beneath (see http://wiki.scipy.org/NumPy_for_Matlab_Users for additional information):
%pylab
vector_a = r_[0.:10.] #short form of "arange"
vector_b = array([1,1,1,1])
vector_c = r_[vector_a,vector_b]
print vector_a
print vector_b
print vector_c, '\n\n'
a = ones((3,4))*4
print a, '\n'
c = array([1,1,1])
b = c_[a,c]
print b, '\n\n'
a = ones((4,3))*4
print a, '\n'
c = array([[1,1,1]])
b = r_[a,c]
print b
print type(vector_b)
Which results in:
[ 0. 1. 2. 3. 4. 5. 6. 7. 8. 9.]
[1 1 1 1]
[ 0. 1. 2. 3. 4. 5. 6. 7. 8. 9. 1. 1. 1. 1.]
[[ 4. 4. 4. 4.]
[ 4. 4. 4. 4.]
[ 4. 4. 4. 4.]]
[[ 4. 4. 4. 4. 1.]
[ 4. 4. 4. 4. 1.]
[ 4. 4. 4. 4. 1.]]
[[ 4. 4. 4.]
[ 4. 4. 4.]
[ 4. 4. 4.]
[ 4. 4. 4.]]
[[ 4. 4. 4.]
[ 4. 4. 4.]
[ 4. 4. 4.]
[ 4. 4. 4.]
[ 1. 1. 1.]]
It has been almost 8 years since the question was asked, but I will venture an answer not previously given. The OP said this doesn't work:
action="javascript:simpleCart.checkout()"
And the OP said that this code continued to fail despite trying all the good advice he got. So I will venture a guess. The action is calling checkout()
as a static method of the simpleCart
class; but maybe checkout()
is actually an instance member, and not static. It depends how he defined checkout()
.
By the way, simpleCart
is presumably a class name, and by convention class names have an initial capital letter, so let's use that convention, here. Let's use the name SimpleCart
.
Here is some sample code that illustrates defining checkout()
as an instance member. This was the correct way to do it, prior to ECMA-6:
function SimpleCart() {
...
}
SimpleCart.prototype.checkout = function() { ... };
Many people have used a different technique, as illustrated in the following. This was popular, and it worked, but I advocate against it, because instances are supposed to be defined on the prototype
, just once, while the following technique defines the member on this
and does so repeatedly, with every instantiation.
function SimpleCart() {
...
this.checkout = function() { ... };
}
And here is an instance definition in ECMA-6, using an official class
:
class SimpleCart {
constructor() { ... }
...
checkout() { ... }
}
Compare to a static definition in ECMA-6. The difference is just one word:
class SimpleCart {
constructor() { ... }
...
static checkout() { ... }
}
And here is a static definition the old way, pre-ECMA-6. Note that the checkout()
method is defined outside of the function. It is a member of the function object, not the prototype object, and that's what makes it static.
function SimpleCart() {
...
}
SimpleCart.checkout = function() { ... };
Because of the way it is defined, a static function will have a different concept of what the keyword this
references. Note that instance member functions are called using the this
keyword:
this.checkout();
Static member functions are called using the class name:
SimpleCart.checkout();
The problem is that the OP wants to put the call into HTML, where it will be in global scope. He can't use the keyword this
because this
would refer to the global scope (which is window
).
action="javascript:this.checkout()" // not as intended
action="javascript:window.checkout()" // same thing
There is no easy way to use an instance member function in HTML. You can do stuff in combination with JavaScript, creating a registry in the static scope of the Class, and then calling a surrogate static method, while passing an argument to that surrogate that gives the index into the registry of your instance, and then having the surrogate call the actual instance member function. Something like this:
// In Javascript:
SimpleCart.registry[1234] = new SimpleCart();
// In HTML
action="javascript:SimpleCart.checkout(1234);"
// In Javascript
SimpleCart.checkout = function(myIndex) {
var myThis = SimpleCart.registry[myIndex];
myThis.checkout();
}
You could also store the index as an attribute on the element.
But usually it is easier to just do nothing in HTML and do everything in JavaScript with .addEventListener()
and use the .bind()
capability.
According to adb help
:
adb root - restarts the adbd daemon with root permissions
Which indeed resolved the issue for me.
If the value is a String, then this might work:
map.entrySet().stream().collect(Collectors.toMap(e -> e.getKey(), e -> Optional.ofNullable(e.getValue()).orElse("")))
Register your java class on Android manifest file
After that write this code on button click
startActivity(new intent(MainActivity.this,NextActivity.class));
You can also use time
library:
import time
start = time.time()
# your code
# end
print(f'Time: {time.time() - start}')
Media Queries in style-Attributes are not possible right now. But if you have to set this dynamically via Javascript. You could insert that rule via JS aswell.
document.styleSheets[0].insertRule("@media only screen and (max-width : 300px) { span { background-image:particular_ad_small.png; } }","");
This is as if the style was there in the stylesheet. So be aware of specificity.
Try add -H tcp://0.0.0.0:2375
(at end of Execstart
line) instead of -H 0.0.0.0:2375
.
overflow-x: scroll;
overflow-y: hidden;
EDIT:
It works for me:
<div style='overflow-x:scroll;overflow-y:hidden;width:250px;height:200px'>
<div style='width:400px;height:250px'></div>
</div>
Looks like this will be finally supported in the SQL Server 2019! SQL Server 2019 - whats new?
From BOL:
UTF-8 support
Full support for the widely used UTF-8 character encoding as an import or export encoding, or as database-level or column-level collation for text data. UTF-8 is allowed in the
CHAR
andVARCHAR
datatypes, and is enabled when creating or changing an object’s collation to a collation with theUTF8
suffix.For example,
LATIN1_GENERAL_100_CI_AS_SC
toLATIN1_GENERAL_100_CI_AS_SC_UTF8
. UTF-8 is only available to Windows collations that support supplementary characters, as introduced in SQL Server 2012.NCHAR
andNVARCHAR
allow UTF-16 encoding only, and remain unchanged.This feature may provide significant storage savings, depending on the character set in use. For example, changing an existing column data type with ASCII strings from
NCHAR(10)
toCHAR(10)
using an UTF-8 enabled collation, translates into nearly 50% reduction in storage requirements. This reduction is becauseNCHAR(10)
requires 22 bytes for storage, whereasCHAR(10)
requires 12 bytes for the same Unicode string.
2019-05-14 update:
Documentation seems to be updated now and explains our options staring in MSSQL 2019 in section "Collation and Unicode Support".
2019-07-24 update:
Article by Pedro Lopes - Senior Program Manager @ Microsoft about introducing UTF-8 support for Azure SQL Database
Try to change CREATE FUNCTION F_TEST(PID INT) RETURNS VARCHAR
this portion to
CREATE FUNCTION F_TEST(PID INT) RETURNS TEXT
and change the following line too.
DECLARE NAME_FOUND TEXT DEFAULT "";
It should work.
create another class and increase the with size with 2px example
.enquiry_fld_normal{
width:278px !important;
}
.enquiry_fld_normal_select{
width:280px !important;
}
Matplotlib does this by default.
E.g.:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
plt.plot(x, x)
plt.plot(x, 2 * x)
plt.plot(x, 3 * x)
plt.plot(x, 4 * x)
plt.show()
And, as you may already know, you can easily add a legend:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
plt.plot(x, x)
plt.plot(x, 2 * x)
plt.plot(x, 3 * x)
plt.plot(x, 4 * x)
plt.legend(['y = x', 'y = 2x', 'y = 3x', 'y = 4x'], loc='upper left')
plt.show()
If you want to control the colors that will be cycled through:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
plt.gca().set_color_cycle(['red', 'green', 'blue', 'yellow'])
plt.plot(x, x)
plt.plot(x, 2 * x)
plt.plot(x, 3 * x)
plt.plot(x, 4 * x)
plt.legend(['y = x', 'y = 2x', 'y = 3x', 'y = 4x'], loc='upper left')
plt.show()
If you're unfamiliar with matplotlib, the tutorial is a good place to start.
Edit:
First off, if you have a lot (>5) of things you want to plot on one figure, either:
Otherwise, you're going to wind up with a very messy plot! Be nice to who ever is going to read whatever you're doing and don't try to cram 15 different things onto one figure!!
Beyond that, many people are colorblind to varying degrees, and distinguishing between numerous subtly different colors is difficult for more people than you may realize.
That having been said, if you really want to put 20 lines on one axis with 20 relatively distinct colors, here's one way to do it:
import matplotlib.pyplot as plt
import numpy as np
num_plots = 20
# Have a look at the colormaps here and decide which one you'd like:
# http://matplotlib.org/1.2.1/examples/pylab_examples/show_colormaps.html
colormap = plt.cm.gist_ncar
plt.gca().set_prop_cycle(plt.cycler('color', plt.cm.jet(np.linspace(0, 1, num_plots))))
# Plot several different functions...
x = np.arange(10)
labels = []
for i in range(1, num_plots + 1):
plt.plot(x, i * x + 5 * i)
labels.append(r'$y = %ix + %i$' % (i, 5*i))
# I'm basically just demonstrating several different legend options here...
plt.legend(labels, ncol=4, loc='upper center',
bbox_to_anchor=[0.5, 1.1],
columnspacing=1.0, labelspacing=0.0,
handletextpad=0.0, handlelength=1.5,
fancybox=True, shadow=True)
plt.show()
Since I'm too low reputation to comment, I will post this as an answer since it saved me after hours of struggeling and it may help somebody else:
As most people state GC.Collect(); is NOT recommended to do this normally, except in edge cases. As an example of this running garbage collection was exactly the solution to my scenario.
My program runs a long running operation on a file in a thread and afterwards deletes the file from the main thread. However: when the file operation throws an exception .NET does NOT release the filelock until the garbage is actually collected, EVEN when the long running task is encapsulated in a using statement. Therefore the program has to force garbage collection before attempting to delete the file.
In code:
var returnvalue = 0;
using (var t = Task.Run(() => TheTask(args, returnvalue)))
{
//TheTask() opens a file and then throws an exception. The exception itself is handled within the task so it does return a result (the errorcode)
returnvalue = t.Result;
}
//Even though at this point the Thread is closed the file is not released untill garbage is collected
System.GC.Collect();
DeleteLockedFile();
If you want to have a new data frame then:
import pandas as pd
old = pd.DataFrame({'A' : [4,5], 'B' : [10,20], 'C' : [100,50], 'D' : [-30,-50]})
new= old[['A', 'C', 'D']]
On Chrome's latest update (38.0.2125.104 m at the moment), Google added the option to know whether the files loaded to the website were newly downloaded from the server - or read from the local cache.
When an error like yours "hits" the console - you know the files were just downloaded from the server and not read from the local cache. You can recreate this error by clicking Ctrl + F5 (refresh and erase cache).
It fits your description where Firebug (or equivalents) doesn't fire any errors to the console - whilst Chrome does.
So, the bottom line is - your're just fine and you can ignore this error - it's merely an indicator.
I used this command and it worked fine with me:
>git push -f origin master
But notice, that may delete some files you already have on the remote repo. That came in handy with me as the scenario was different; I was pushing my local project to the remote repo which was empty but the READ.ME
The correct way, as SAM write before is:
reg Query "HKLM\Hardware\Description\System\CentralProcessor\0" /v "Identifier" | find /i "x86" > NUL && set OS=32BIT || set OS=64BIT
but with /v "Identifier" a little bit correct.
You can write:
"line 1" +
"line 2" +
"line 3"
which is the same as:
"line 1line 2line 3"
Unlike using back ticks, it will preserve escape characters. Note that the "+" must be on the 'leading' line - for instance, the following will generate an error:
"line 1"
+"line 2"
Note, however, that git checkout ./foo
and git checkout HEAD ./foo
are not exactly the same thing; case in point:
$ echo A > foo
$ git add foo
$ git commit -m 'A' foo
Created commit a1f085f: A
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 foo
$ echo B >> foo
$ git add foo
$ echo C >> foo
$ cat foo
A
B
C
$ git checkout ./foo
$ cat foo
A
B
$ git checkout HEAD ./foo
$ cat foo
A
(The second add
stages the file in the index, but it does not get
committed.)
Git checkout ./foo
means revert path ./foo
from the index;
adding HEAD
instructs Git to revert that path in the index to its
HEAD
revision before doing so.
#pragma once
does have one drawback (other than being non-standard) and that is if you have the same file in different locations (we have this because our build system copies files around) then the compiler will think these are different files.
To join Array1 and Array2, create a new array say JointArray
Dim JointArray As Variant
ReDim JointArray(UBound(Array1) + UBound(Array2) + 1) As Variant
For i = 0 To UBound(JointArray)
If i <= UBound(Array1) Then
JointArray(i) = Array1(i)
Else
JointArray(i) = Array2(i - UBound(Array1) - 1)
End If
Next
On my mac from a terminal:
$ ./adb kill-server
$ ./adb start-server
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
I opened the eclipse and set the ddms port to 5037. it works fine.
@echo off
cls
MD %homedrive%\TEMPBBDVD\
CLS
TIMEOUT /T 1 >NUL
CLS
systeminfo >%homedrive%\TEMPBBDVD\info.txt
cls
timeout /t 3 >nul
cls
find "x64-based PC" %homedrive%\TEMPBBDVD\info.txt >nul
if %errorlevel% equ 1 goto 32bitsok
goto 64bitsok
cls
:commandlineerror
cls
echo error, command failed or you not are using windows OS.
pause >nul
cls
exit
:64bitsok
cls
echo done, system of 64 bits
pause >nul
cls
del /q /f %homedrive%\TEMPBBDVD\info.txt >nul
cls
timeout /t 1 >nul
cls
RD %homedrive%\TEMPBBDVD\ >nul
cls
exit
:32bitsok
cls
echo done, system of 32 bits
pause >nul
cls
del /q /f %homedrive%\TEMPBBDVD\info.txt >nul
cls
timeout /t 1 >nul
cls
RD %homedrive%\TEMPBBDVD\ >nul
cls
exit
There is better way. I'm using it in pages where I'm using kendo angularJS directives and grids has'nt IDs...
change: function (e) {
var selectedDataItem = e != null ? e.sender.dataItem(e.sender.select()) : null;
}
PLEASE ADD REASON FOR DOWNVOTE
No need to use any external library to extend
In JavaScript, everything is an object (except for the three primitive datatypes, and even they are automatically wrapped with objects when needed). Furthermore, all objects are mutable.
Class Person in JavaScript
function Person(name, age) {
this.name = name;
this.age = age;
}
Person.prototype = {
getName: function() {
return this.name;
},
getAge: function() {
return this.age;
}
}
/* Instantiate the class. */
var alice = new Person('Alice', 93);
var bill = new Person('Bill', 30);
Modify a specific instance/object.
alice.displayGreeting = function()
{
alert(this.getGreeting());
}
Modify the class
Person.prototype.getGreeting = function()
{
return 'Hi ' + this.getName() + '!';
};
Or simply say : extend JSON and OBJECT both are same
var k = {
name : 'jack',
age : 30
}
k.gender = 'male'; /*object or json k got extended with new property gender*/
thanks to ross harmes , dustin diaz
Without seeing specific code, it's difficult to give you a precise answer. However, from the Bootstrap docs, you can hide the modal like this:
$('#myModal').modal('hide')
Then, show another modal once it's hidden:
$('#myModal').on('hidden.bs.modal', function () {
// Load up a new modal...
$('#myModalNew').modal('show')
})
You're going to have to find a way to push the URL to the new modal window, but I'd assume that'd be trivial. Without seeing the code it's hard to give an example of that.
Getting shell variables into
awk
may be done in several ways. Some are better than others. This should cover most of them. If you have a comment, please leave below. v1.5
-v
(The best way, most portable)Use the -v
option: (P.S. use a space after -v
or it will be less portable. E.g., awk -v var=
not awk -vvar=
)
variable="line one\nline two"
awk -v var="$variable" 'BEGIN {print var}'
line one
line two
This should be compatible with most awk
, and the variable is available in the BEGIN
block as well:
If you have multiple variables:
awk -v a="$var1" -v b="$var2" 'BEGIN {print a,b}'
Warning. As Ed Morton writes, escape sequences will be interpreted so \t
becomes a real tab
and not \t
if that is what you search for. Can be solved by using ENVIRON[]
or access it via ARGV[]
PS If you like three vertical bar as separator |||
, it can't be escaped, so use -F"[|][|][|]"
Example on getting data from a program/function inn to
awk
(here date is used)
awk -v time="$(date +"%F %H:%M" -d '-1 minute')" 'BEGIN {print time}'
Here we get the variable after the awk
code. This will work fine as long as you do not need the variable in the BEGIN
block:
variable="line one\nline two"
echo "input data" | awk '{print var}' var="${variable}"
or
awk '{print var}' var="${variable}" file
awk '{print a,b,$0}' a="$var1" b="$var2" file
FS
for each file.awk 'some code' FS=',' file1.txt FS=';' file2.ext
BEGIN
block:echo "input data" | awk 'BEGIN {print var}' var="${variable}"
Variable can also be added to awk
using a here-string from shells that support them (including Bash):
awk '{print $0}' <<< "$variable"
test
This is the same as:
printf '%s' "$variable" | awk '{print $0}'
P.S. this treats the variable as a file input.
ENVIRON
inputAs TrueY writes, you can use the ENVIRON
to print Environment Variables.
Setting a variable before running AWK, you can print it out like this:
X=MyVar
awk 'BEGIN{print ENVIRON["X"],ENVIRON["SHELL"]}'
MyVar /bin/bash
ARGV
inputAs Steven Penny writes, you can use ARGV
to get the data into awk:
v="my data"
awk 'BEGIN {print ARGV[1]}' "$v"
my data
To get the data into the code itself, not just the BEGIN:
v="my data"
echo "test" | awk 'BEGIN{var=ARGV[1];ARGV[1]=""} {print var, $0}' "$v"
my data test
You can use a variable within the awk
code, but it's messy and hard to read, and as Charles Duffy
points out, this version may also be a victim of code injection. If someone adds bad stuff to the variable, it will be executed as part of the awk
code.
This works by extracting the variable within the code, so it becomes a part of it.
If you want to make an awk
that changes dynamically with use of variables, you can do it this way, but DO NOT use it for normal variables.
variable="line one\nline two"
awk 'BEGIN {print "'"$variable"'"}'
line one
line two
Here is an example of code injection:
variable='line one\nline two" ; for (i=1;i<=1000;++i) print i"'
awk 'BEGIN {print "'"$variable"'"}'
line one
line two
1
2
3
.
.
1000
You can add lots of commands to awk
this way. Even make it crash with non valid commands.
It's always good to double quote variable "$variable"
If not, multiple lines will be added as a long single line.
Example:
var="Line one
This is line two"
echo $var
Line one This is line two
echo "$var"
Line one
This is line two
Other errors you can get without double quote:
variable="line one\nline two"
awk -v var=$variable 'BEGIN {print var}'
awk: cmd. line:1: one\nline
awk: cmd. line:1: ^ backslash not last character on line
awk: cmd. line:1: one\nline
awk: cmd. line:1: ^ syntax error
And with single quote, it does not expand the value of the variable:
awk -v var='$variable' 'BEGIN {print var}'
$variable
I don't know why but for me the solution proposed by Marius Stanescu is breaking the specificity of col (a col-md-3 followed by a col-md-4 will take all of the twelve row)
I found another working solution :
.bottom-column
{
display: inline-block;
vertical-align: middle;
float: none;
}
First you need to define the List
as :
List<Map<String, ArrayList<String>>> list = new ArrayList<>();
To add the Map
to the List
, use add(E e) method :
list.add(map);
Use the one with mysql_fetch_row
because "For SELECT, SHOW, DESCRIBE, EXPLAIN and other statements returning resultset, mysql_query() returns a resource on success, or FALSE on error.
For other type of SQL statements, INSERT, UPDATE, DELETE, DROP, etc, mysql_query() returns TRUE on success or FALSE on error. "
This difference is due to the behavior of Promises more than fetch()
specifically.
When a .then()
callback returns an additional Promise
, the next .then()
callback in the chain is essentially bound to that Promise, receiving its resolve or reject fulfillment and value.
The 2nd snippet could also have been written as:
iterator.then(response =>
response.json().then(post => document.write(post.title))
);
In both this form and yours, the value of post
is provided by the Promise returned from response.json()
.
When you return a plain Object
, though, .then()
considers that a successful result and resolves itself immediately, similar to:
iterator.then(response =>
Promise.resolve({
data: response.json(),
status: response.status
})
.then(post => document.write(post.data))
);
post
in this case is simply the Object
you created, which holds a Promise
in its data
property. The wait for that promise to be fulfilled is still incomplete.
import { Component, Pipe, PipeTransform } from '@angular/core';
@Pipe({
name: 'timePipe'
})
export class TimeValuePipe implements PipeTransform {
transform(value: any, args?: any): any {
var hoursMinutes = value.split(/[.:]/);
var hours = parseInt(hoursMinutes[0], 10);
var minutes = hoursMinutes[1] ? parseInt(hoursMinutes[1], 10) : 0;
console.log('hours ', hours);
console.log('minutes ', minutes/60);
return (hours + minutes / 60).toFixed(2);
}
}
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
name = 'Angular';
order = [
{
"order_status": "Still at Shop",
"order_id": "0:02"
},
{
"order_status": "On the way",
"order_id": "02:29"
},
{
"order_status": "Delivered",
"order_id": "16:14"
},
{
"order_status": "Delivered",
"order_id": "07:30"
}
]
}
Invoke this module in App.Module.ts file.
Try something like this it will help you
$("#from").click(function () {
$('#from').attr('readonly', true);
});
Thanks
I recently asked myself the same question.
There are multiple possible solutions, here are 3 valid ones:
s.indexOf(starter) === 0
s.substr(0,starter.length) === starter
s.lastIndexOf(starter, 0) === 0
(added after seeing Mark Byers's answer)using a loop:
function startsWith(s,starter) {
for (var i = 0,cur_c; i < starter.length; i++) {
cur_c = starter[i];
if (s[i] !== starter[i]) {
return false;
}
}
return true;
}
I haven't come across the last solution which makes uses of a loop.
Surprisingly this solution outperforms the first 3 by a significant margin.
Here is the jsperf test I performed to reach this conclusion: http://jsperf.com/startswith2/2
Peace
ps: ecmascript 6 (harmony) introduces a native startsWith
method for strings.
Just think how much time would have been saved if they had thought of including this much needed method in the initial version itself.
Update
As Steve pointed out (the first comment on this answer), the above custom function will throw an error if the given prefix is shorter than the whole string. He has fixed that and added a loop optimization which can be viewed at http://jsperf.com/startswith2/4.
Note that there are 2 loop optimizations which Steve included, the first of the two showed better performance, thus I will post that code below:
function startsWith2(str, prefix) {
if (str.length < prefix.length)
return false;
for (var i = prefix.length - 1; (i >= 0) && (str[i] === prefix[i]); --i)
continue;
return i < 0;
}
You need to unwrap the optional before you try to use it via string interpolation. The safest way to do that is via optional binding:
if let color = colorChoiceSegmentedControl.titleForSegmentAtIndex(colorChoiceSegmentedControl.selectedSegmentIndex) {
println(color) // "Red"
let imageURLString = "http://hahaha.com/ha.php?color=\(color)"
println(imageURLString) // http://hahaha.com/ha.php?color=Red
}
Here is a little BASH function you can add to your .bashrc or .profile on a UNIX based system. Once added and the shell is either restarted or the file is reloaded via a call to source ~/.profile
or source ~/.bashrc
.
function gitToBare() {
if [ -d ".git" ]; then
DIR="`pwd`"
mv .git ..
rm -fr *
mv ../.git .
mv .git/* .
rmdir .git
git config --bool core.bare true
cd ..
mv "${DIR}" "${DIR}.git"
printf "[\x1b[32mSUCCESS\x1b[0m] Git repository converted to "
printf "bare and renamed to\n ${DIR}.git\n"
cd "${DIR}.git"
else
printf "[\x1b[31mFAILURE\x1b[0m] Cannot find a .git directory\n"
fi
}
Once called within a directory containing a .git directory, it will make the appropriate changes to convert the repository. If there is no .git directory present when called, a FAILURE message will appear and no file system changes will happen.
The solution is to run an NTP client , just run the command as below
#ntpdate 172.16.12.100
172.16.12.100 is the ntp server
pkill -f for whatever reason does not work for me. Whatever that does, it seems very finicky about actually grepping through what ps aux shows me clearly is there.
After an afternoon of swearing I went for putting the following in my start script:
(ps aux | grep -v -e 'grep ' | grep MainApp | tr -s " " | cut -d " " -f 2 | xargs kill -9 ) || true
You'll have to pass your arguments as reference types.
#First create the variables (note you have to set them to something)
$global:var1 = $null
$global:var2 = $null
$global:var3 = $null
#The type of the reference argument should be of type [REF]
function foo ($a, $b, [REF]$c)
{
# add $a and $b and set the requested global variable to equal to it
# Note how you modify the value.
$c.Value = $a + $b
}
#You can then call it like this:
foo 1 2 [REF]$global:var3