If 'bounds_changed' is not firing correctly (sometimes Google doesn't seem to accept coordinates perfectly), then consider using 'center_changed' instead.
The 'center_changed' event fires every time fitBounds() is called, although it runs immediately and not necessarily after the map has moved.
In normal cases, 'idle' is still the best event listener, but this may help a couple people running into weird issues with their fitBounds() calls.
In reply to Is there a specific reason?
, here is one interesting application: breaking out of multiple levels of looping.
Here is how it works: the outer loop has a break at the end, so it would only be executed once. However, if the inner loop completes (finds no divisor), then it reaches the else statement and the outer break is never reached. This way, a break in the inner loop will break out of both loops, rather than just one.
for k in [2, 3, 5, 7, 11, 13, 17, 25]:
for m in range(2, 10):
if k == m:
continue
print 'trying %s %% %s' % (k, m)
if k % m == 0:
print 'found a divisor: %d %% %d; breaking out of loop' % (k, m)
break
else:
continue
print 'breaking another level of loop'
break
else:
print 'no divisor could be found!'
For both while
and for
loops, the else
statement is executed at the end, unless break
was used.
In most cases there are better ways to do this (wrapping it into a function or raising an exception), but this works!
You can create an async init() {... return this;}
method, then instead do new MyClass().init()
whenever you'd normally just say new MyClass()
.
This is not clean because it relies on everyone who uses your code, and yourself, to always instantiate the object like so. However if you're only using this object in a particular place or two in your code, it could maybe be fine.
A significant problem though occurs because ES has no type system, so if you forget to call it, you've just returned undefined
because the constructor returns nothing. Oops. Much better would be to do something like:
The best thing to do would be:
class AsyncOnlyObject {
constructor() {
}
async init() {
this.someField = await this.calculateStuff();
}
async calculateStuff() {
return 5;
}
}
async function newAsync_AsyncOnlyObject() {
return await new AsyncOnlyObject().init();
}
newAsync_AsyncOnlyObject().then(console.log);
// output: AsyncOnlyObject {someField: 5}
However then you might accidentally do new AsyncOnlyObject, you should probably just create factory function that uses Object.create(AsyncOnlyObject.prototype)
directly:
async function newAsync_AsyncOnlyObject() {
return await Object.create(AsyncOnlyObject.prototype).init();
}
newAsync_AsyncOnlyObject().then(console.log);
// output: AsyncOnlyObject {someField: 5}
However say you want to use this pattern on many objects... you could abstract this as a decorator or something you (verbosely, ugh) call after defining like postProcess_makeAsyncInit(AsyncOnlyObject)
, but here I'm going to use extends
because it sort of fits into subclass semantics (subclasses are parent class + extra, in that they should obey the design contract of the parent class, and may do additional things; an async subclass would be strange if the parent wasn't also async, because it could not be initialized the same way):
class AsyncObject {
constructor() {
throw new Error('classes descended from AsyncObject must be initialized as (await) TheClassName.anew(), rather than new TheClassName()');
}
static async anew(...args) {
var R = Object.create(this.prototype);
R.init(...args);
return R;
}
}
class MyObject extends AsyncObject {
async init(x, y=5) {
this.x = x;
this.y = y;
// bonus: we need not return 'this'
}
}
MyObject.anew('x').then(console.log);
// output: MyObject {x: "x", y: 5}
(do not use in production: I have not thought through complicated scenarios such as whether this is the proper way to write a wrapper for keyword arguments.)
For all who come here trying to run a nginx image in a docker container, that will run as a service
As there is no whole Dockerfile, here is my whole Dockerfile
solving the issue.
Nice and working. Thanks to all answers here in order to solve the final nginx issue.
FROM ubuntu:18.04
MAINTAINER stackoverfloguy "[email protected]"
RUN apt-get update -y
RUN apt-get install net-tools nginx ufw sudo -y
RUN adduser --disabled-password --gecos '' docker
RUN adduser docker sudo
RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
USER docker
RUN sudo ufw default allow incoming
RUN sudo rm /etc/nginx/nginx.conf
RUN sudo rm /etc/nginx/sites-available/default
RUN sudo rm /var/www/html/index.nginx-debian.html
VOLUME /var/log
VOLUME /usr/share/nginx/html
VOLUME /etc/nginx
VOLUME /var/run
COPY conf/nginx.conf /etc/nginx/nginx.conf
COPY content/* /var/www/html/
COPY Dockerfile /var/www/html
COPY start.sh /etc/nginx/start.sh
RUN sudo chmod +x /etc/nginx/start.sh
RUN sudo chmod -R 777 /var/www/html
EXPOSE 80
EXPOSE 443
ENTRYPOINT sudo nginx -c /etc/nginx/nginx.conf -g 'daemon off;'
And run it with:
docker run -p 80:80 -p 443:443 -dit
This is the example code taken from the PHP documentation here: https://www.php.net/manual/en/function.filemtime.php
// outputs e.g. somefile.txt was last changed: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last modified: " . date ("F d Y H:i:s.", filemtime($filename));
}
The code specifies the filename, then checks if it exists and then displays the modification time using filemtime()
.
filemtime()
takes 1 parameter which is the path to the file, this can be relative or absolute.
Out side the loop, set following.
cmbTripName.ValueMember = "FleetID"
cmbTripName.DisplayMember = "FleetName"
You could achieve that simply by wrapping the image by a <div>
and adding overflow: hidden
to that element:
<div class="img-wrapper">
<img src="..." />
</div>
.img-wrapper {
display: inline-block; /* change the default display type to inline-block */
overflow: hidden; /* hide the overflow */
}
Also it's worth noting that <img>
element (like the other inline elements) sits on its baseline by default. And there would be a 4~5px
gap at the bottom of the image.
That vertical gap belongs to the reserved space of descenders like: g j p q y. You could fix the alignment issue by adding vertical-align
property to the image with a value other than baseline
.
Additionally for a better user experience, you could add transition
to the images.
Thus we'll end up with the following:
.img-wrapper img {
transition: all .2s ease;
vertical-align: middle;
}
Simple INNER JOIN VIEW code....
CREATE VIEW room_view
AS SELECT a.*,b.*
FROM j4_booking a INNER JOIN j4_scheduling b
on a.room_id = b.room_id;
The simple option to use with aggregate
is the length
function which will give you the length of the vector in the subset. Sometimes a little more robust is to use function(x) sum( !is.na(x) )
.
We can use another way as well for example to insert the value with special characters 'Java_22 & Oracle_14' into db we can use the following format..
'Java_22 '||'&'||' Oracle_14'
Though it consider as 3 different tokens we dont have any option as the handling of escape sequence provided in the oracle documentation is incorrect.
The install.packages command looks through the .libPaths variable. Here's what mine defaults to on OSX:
> .libPaths()
[1] "/Library/Frameworks/R.framework/Resources/library"
I don't install packages there by default, I prefer to have them installed in my home directory. In my .Rprofile, I have this line:
.libPaths( "/Users/tex/lib/R" )
This adds the directory "/Users/tex/lib/R" to the front of the .libPaths variable.
The col
argument in the plot
function assign colors automatically to a vector of integers. If you convert iris$Species
to numeric, notice you have a vector of 1,2 and 3s So you can apply this as:
plot(iris$Sepal.Length, iris$Sepal.Width, col=as.numeric(iris$Species))
Suppose you want red, blue and green instead of the default colors, then you can simply adjust it:
plot(iris$Sepal.Length, iris$Sepal.Width, col=c('red', 'blue', 'green')[as.numeric(iris$Species)])
You can probably see how to further modify the code above to get any unique combination of colors.
When you try doing
ssh -i <.pem path> root@ec2-public-dns
You get a message advising you to use the ec2-user
.
Please login as the user "ec2-user" rather than the user "root".
So use
ssh -i <.pem path> ec2-user@ec2-public-dns
I succeeded in defining nested routes by wrapping with Switch
and define nested route before than root route.
<BrowserRouter>
<Switch>
<Route path="/staffs/:id/edit" component={StaffEdit} />
<Route path="/staffs/:id" component={StaffShow} />
<Route path="/staffs" component={StaffIndex} />
</Switch>
</BrowserRouter>
Reference: https://github.com/ReactTraining/react-router/blob/master/packages/react-router/docs/api/Switch.md
Eclipse wouldn't let me point to an existing (or add a new) source directory. Eclipse's configuration files can be wonky. In my case I should have started simple. Right click the project and click Refresh.
Works for Navigation Based Application
var addStatusBar = UIView()
addStatusBar.frame = CGRectMake(0, 0, UIScreen.mainScreen().bounds.width, 20);
addStatusBar.backgroundColor = global().UIColorFromRGB(0x65b4d9)
self.window?.rootViewController?.view .addSubview(addStatusBar)
I tried with the following and it's worked:
release {
debuggable true
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
UPDATE on 2019/Sep/01:
finally
would swallow original Exception
thrown by try
if finally
code threw an Exception
After reviewing all of these answers on how to easily write a file in Scala, and some of them are quite nice, I had three issues:
scala.util.Try
close
method is performed on each dependent resource in reverse order - Note: closing dependent resources in reverse order ESPECIALLY IN THE EVENT OF A FAILURE is a rarely understood requirement of the java.lang.AutoCloseable
specification which tends to lead to very pernicious and difficult to find bugs and run time failuresBefore starting, my goal isn't conciseness. It's to facilitate easier understanding for Scala/FP beginners, typically those coming from Java. At the very end, I will pull all the bits together, and then increase the conciseness.
First, the using
method needs to be updated to use Try
(again, conciseness is not the goal here). It will be renamed to tryUsingAutoCloseable
:
def tryUsingAutoCloseable[A <: AutoCloseable, R]
(instantiateAutoCloseable: () => A) //parameter list 1
(transfer: A => scala.util.Try[R]) //parameter list 2
: scala.util.Try[R] =
Try(instantiateAutoCloseable())
.flatMap(
autoCloseable => {
var optionExceptionTry: Option[Exception] = None
try
transfer(autoCloseable)
catch {
case exceptionTry: Exception =>
optionExceptionTry = Some(exceptionTry)
throw exceptionTry
}
finally
try
autoCloseable.close()
catch {
case exceptionFinally: Exception =>
optionExceptionTry match {
case Some(exceptionTry) =>
exceptionTry.addSuppressed(exceptionFinally)
case None =>
throw exceptionFinally
}
}
}
)
The beginning of the above tryUsingAutoCloseable
method might be confusing because it appears to have two parameter lists instead of the customary single parameter list. This is called currying. And I won't go into detail how currying works or where it is occasionally useful. It turns out that for this particular problem space, it's the right tool for the job.
Next, we need to create method, tryPrintToFile
, which will create a (or overwrite an existing) File
and write a List[String]
. It uses a FileWriter
which is encapsulated by a BufferedWriter
which is in turn encapsulated by a PrintWriter
. And to elevate performance, a default buffer size much larger than the default for BufferedWriter
is defined, defaultBufferSize
, and assigned the value 65536.
Here's the code (and again, conciseness is not the goal here):
val defaultBufferSize: Int = 65536
def tryPrintToFile(
lines: List[String],
location: java.io.File,
bufferSize: Int = defaultBufferSize
): scala.util.Try[Unit] = {
tryUsingAutoCloseable(() => new java.io.FileWriter(location)) { //this open brace is the start of the second curried parameter to the tryUsingAutoCloseable method
fileWriter =>
tryUsingAutoCloseable(() => new java.io.BufferedWriter(fileWriter, bufferSize)) { //this open brace is the start of the second curried parameter to the tryUsingAutoCloseable method
bufferedWriter =>
tryUsingAutoCloseable(() => new java.io.PrintWriter(bufferedWriter)) { //this open brace is the start of the second curried parameter to the tryUsingAutoCloseable method
printWriter =>
scala.util.Try(
lines.foreach(line => printWriter.println(line))
)
}
}
}
}
The above tryPrintToFile
method is useful in that it takes a List[String]
as input and sends it to a File
. Let's now create a tryWriteToFile
method which takes a String
and writes it to a File
.
Here's the code (and I'll let you guess conciseness's priority here):
def tryWriteToFile(
content: String,
location: java.io.File,
bufferSize: Int = defaultBufferSize
): scala.util.Try[Unit] = {
tryUsingAutoCloseable(() => new java.io.FileWriter(location)) { //this open brace is the start of the second curried parameter to the tryUsingAutoCloseable method
fileWriter =>
tryUsingAutoCloseable(() => new java.io.BufferedWriter(fileWriter, bufferSize)) { //this open brace is the start of the second curried parameter to the tryUsingAutoCloseable method
bufferedWriter =>
Try(bufferedWriter.write(content))
}
}
}
Finally, it is useful to be able to fetch the contents of a File
as a String
. While scala.io.Source
provides a convenient method for easily obtaining the contents of a File
, the close
method must be used on the Source
to release the underlying JVM and file system handles. If this isn't done, then the resource isn't released until the JVM GC (Garbage Collector) gets around to releasing the Source
instance itself. And even then, there is only a weak JVM guarantee the finalize
method will be called by the GC to close
the resource. This means that it is the client's responsibility to explicitly call the close
method, just the same as it is the responsibility of a client to tall close
on an instance of java.lang.AutoCloseable
. For this, we need a second definition of the using method which handles scala.io.Source
.
Here's the code for this (still not being concise):
def tryUsingSource[S <: scala.io.Source, R]
(instantiateSource: () => S)
(transfer: S => scala.util.Try[R])
: scala.util.Try[R] =
Try(instantiateSource())
.flatMap(
source => {
var optionExceptionTry: Option[Exception] = None
try
transfer(source)
catch {
case exceptionTry: Exception =>
optionExceptionTry = Some(exceptionTry)
throw exceptionTry
}
finally
try
source.close()
catch {
case exceptionFinally: Exception =>
optionExceptionTry match {
case Some(exceptionTry) =>
exceptionTry.addSuppressed(exceptionFinally)
case None =>
throw exceptionFinally
}
}
}
)
And here is an example usage of it in a super simple line streaming file reader (currently using to read tab-delimited files from database output):
def tryProcessSource(
file: java.io.File
, parseLine: (String, Int) => List[String] = (line, index) => List(line)
, filterLine: (List[String], Int) => Boolean = (values, index) => true
, retainValues: (List[String], Int) => List[String] = (values, index) => values
, isFirstLineNotHeader: Boolean = false
): scala.util.Try[List[List[String]]] =
tryUsingSource(scala.io.Source.fromFile(file)) {
source =>
scala.util.Try(
( for {
(line, index) <-
source.getLines().buffered.zipWithIndex
values =
parseLine(line, index)
if (index == 0 && !isFirstLineNotHeader) || filterLine(values, index)
retainedValues =
retainValues(values, index)
} yield retainedValues
).toList //must explicitly use toList due to the source.close which will
//occur immediately following execution of this anonymous function
)
)
An updated version of the above function has been provided as an answer to a different but related StackOverflow question.
Now, bringing that all together with the imports extracted (making it much easier to paste into Scala Worksheet present in both Eclipse ScalaIDE and IntelliJ Scala plugin to make it easy to dump output to the desktop to be more easily examined with a text editor), this is what the code looks like (with increased conciseness):
import scala.io.Source
import scala.util.Try
import java.io.{BufferedWriter, FileWriter, File, PrintWriter}
val defaultBufferSize: Int = 65536
def tryUsingAutoCloseable[A <: AutoCloseable, R]
(instantiateAutoCloseable: () => A) //parameter list 1
(transfer: A => scala.util.Try[R]) //parameter list 2
: scala.util.Try[R] =
Try(instantiateAutoCloseable())
.flatMap(
autoCloseable => {
var optionExceptionTry: Option[Exception] = None
try
transfer(autoCloseable)
catch {
case exceptionTry: Exception =>
optionExceptionTry = Some(exceptionTry)
throw exceptionTry
}
finally
try
autoCloseable.close()
catch {
case exceptionFinally: Exception =>
optionExceptionTry match {
case Some(exceptionTry) =>
exceptionTry.addSuppressed(exceptionFinally)
case None =>
throw exceptionFinally
}
}
}
)
def tryUsingSource[S <: scala.io.Source, R]
(instantiateSource: () => S)
(transfer: S => scala.util.Try[R])
: scala.util.Try[R] =
Try(instantiateSource())
.flatMap(
source => {
var optionExceptionTry: Option[Exception] = None
try
transfer(source)
catch {
case exceptionTry: Exception =>
optionExceptionTry = Some(exceptionTry)
throw exceptionTry
}
finally
try
source.close()
catch {
case exceptionFinally: Exception =>
optionExceptionTry match {
case Some(exceptionTry) =>
exceptionTry.addSuppressed(exceptionFinally)
case None =>
throw exceptionFinally
}
}
}
)
def tryPrintToFile(
lines: List[String],
location: File,
bufferSize: Int = defaultBufferSize
): Try[Unit] =
tryUsingAutoCloseable(() => new FileWriter(location)) { fileWriter =>
tryUsingAutoCloseable(() => new BufferedWriter(fileWriter, bufferSize)) { bufferedWriter =>
tryUsingAutoCloseable(() => new PrintWriter(bufferedWriter)) { printWriter =>
Try(lines.foreach(line => printWriter.println(line)))
}
}
}
def tryWriteToFile(
content: String,
location: File,
bufferSize: Int = defaultBufferSize
): Try[Unit] =
tryUsingAutoCloseable(() => new FileWriter(location)) { fileWriter =>
tryUsingAutoCloseable(() => new BufferedWriter(fileWriter, bufferSize)) { bufferedWriter =>
Try(bufferedWriter.write(content))
}
}
def tryProcessSource(
file: File,
parseLine: (String, Int) => List[String] = (line, index) => List(line),
filterLine: (List[String], Int) => Boolean = (values, index) => true,
retainValues: (List[String], Int) => List[String] = (values, index) => values,
isFirstLineNotHeader: Boolean = false
): Try[List[List[String]]] =
tryUsingSource(() => Source.fromFile(file)) { source =>
Try(
( for {
(line, index) <- source.getLines().buffered.zipWithIndex
values = parseLine(line, index)
if (index == 0 && !isFirstLineNotHeader) || filterLine(values, index)
retainedValues = retainValues(values, index)
} yield retainedValues
).toList
)
}
As a Scala/FP newbie, I've burned many hours (in mostly head-scratching frustration) earning the above knowledge and solutions. I hope this helps other Scala/FP newbies get over this particular learning hump faster.
Declare them internal
, and then use the InternalsVisibleToAttribute
to allow your unit test assembly to see them.
I Reject Embedded JDK ( in 32bit ) because embedded JDK is 64bit
Right click your Project -> Open Module Setting -> SDK Location -> Uncheck Use embedded JDk then set your JDK Path, eg in Ubuntu /usr/lib/jvm/java-8-openjdk-i386
@Alex Martelli
's answer is great!
But it work only for one element at time (WHERE name = 'Joan'
)
If you take out the WHERE
clause, the query will return all the root rows together...
I changed a little bit for my situation, so it can show the entire tree for a table.
table definition:
CREATE TABLE [dbo].[mar_categories] (
[category] int IDENTITY(1,1) NOT NULL,
[name] varchar(50) NOT NULL,
[level] int NOT NULL,
[action] int NOT NULL,
[parent] int NULL,
CONSTRAINT [XPK_mar_categories] PRIMARY KEY([category])
)
(level
is literally the level of a category 0: root, 1: first level after root, ...)
and the query:
WITH n(category, name, level, parent, concatenador) AS
(
SELECT category, name, level, parent, '('+CONVERT(VARCHAR (MAX), category)+' - '+CONVERT(VARCHAR (MAX), level)+')' as concatenador
FROM mar_categories
WHERE parent is null
UNION ALL
SELECT m.category, m.name, m.level, m.parent, n.concatenador+' * ('+CONVERT (VARCHAR (MAX), case when ISNULL(m.parent, 0) = 0 then 0 else m.category END)+' - '+CONVERT(VARCHAR (MAX), m.level)+')' as concatenador
FROM mar_categories as m, n
WHERE n.category = m.parent
)
SELECT distinct * FROM n ORDER BY concatenador asc
(You don't need to concatenate the level
field, I did just to make more readable)
the answer for this query should be something like:
I hope it helps someone!
now, I'm wondering how to do this on MySQL... ^^
Using attr() pointing to an external domain may trigger an error like this in Chrome: "Refused to display document because display forbidden by X-Frame-Options". The workaround to this can be to move the whole iframe HTML code into the script (eg. using .html() in jQuery).
Example:
var divMapLoaded = false;
$("#container").scroll(function() {
if ((!divMapLoaded) && ($("#map").position().left <= $("#map").width())) {
$("#map-iframe").html("<iframe id=\"map-iframe\" " +
"width=\"100%\" height=\"100%\" frameborder=\"0\" scrolling=\"no\" " +
"marginheight=\"0\" marginwidth=\"0\" " +
"src=\"http://www.google.it/maps?t=m&cid=0x3e589d98063177ab&ie=UTF8&iwloc=A&brcurrent=5,0,1&ll=41.123115,16.853177&spn=0.005617,0.009943&output=embed\"" +
"></iframe>");
divMapLoaded = true;
}
One way to partially get around the problem is to use the API Level suffix. I use res/layout-v1, res/layout-v2 etc to hold multiple sub projects in the same apk. This mechanism can be used for all resource types.
Obviously, this can only be used if you are targeting API levels above the res/layout-v? you are using.
Also, watch out for the bug in Android 1.5 and 1.6. See Andoroid documentation about the API Level suffix.
You could also try EXISTS
:
SELECT EXISTS(SELECT * FROM table1 WHERE ...)
and per the documentation, you can SELECT
anything.
Traditionally, an EXISTS subquery starts with SELECT *, but it could begin with SELECT 5 or SELECT column1 or anything at all. MySQL ignores the SELECT list in such a subquery, so it makes no difference.
I have tried this with and without the WRITE_INTERNAL_STORAGE permission.
There is no WRITE_INTERNAL_STORAGE
permission in Android.
How do I create this file for writing?
You don't, except perhaps on a rooted device, if your app is running with superuser privileges. You are trying to write to the root of internal storage, which apps do not have access to.
Please use the version of the FileOutputStream
constructor that takes a File
object. Create that File
object based off of some location that you can write to, such as:
getFilesDir()
(called on your Activity
or other Context
)getExternalFilesDir()
(called on your Activity
or other Context
)The latter will require WRITE_EXTERNAL_STORAGE
as a permission.
Is there an easier way than writing it to a file then reading from it again?
You can temporarily put it in a static data member.
because many people don't have SD card slots
"SD card slots" are irrelevant, by and large. 99% of Android device users will have external storage -- the exception will be 4+ year old devices where the user removed their SD card. Devices manufactured since mid-2010 have external storage as part of on-board flash, not as removable media.
Just to add on this, I've came across many docs through google that said to set network.host to localhost.
Doing so gave me the infamous connection refused. You must use an IP address (127.0.0.1), not a FQDN.
Jeff
As an alternative solution, you can also use a context part of jQuery selector to find <option>
element(s) with value="2"
inside the dropdown list:
$("option[value='2']", "#list").text();
This site has two pretty simple solutions - just check the code, I provided the descriptions in case you wanted them - saves you some clicks.
http://www.richardlord.net/blog/dates-in-php-and-mysql
1.One common solution is to store the dates in DATETIME fields and use PHPs date() and strtotime() functions to convert between PHP timestamps and MySQL DATETIMEs. The methods would be used as follows -
$mysqldate = date( 'Y-m-d H:i:s', $phpdate );
$phpdate = strtotime( $mysqldate );
2.Our second option is to let MySQL do the work. MySQL has functions we can use to convert the data at the point where we access the database. UNIX_TIMESTAMP will convert from DATETIME to PHP timestamp and FROM_UNIXTIME will convert from PHP timestamp to DATETIME. The methods are used within the SQL query. So we insert and update dates using queries like this -
$query = "UPDATE table SET
datetimefield = FROM_UNIXTIME($phpdate)
WHERE...";
$query = "SELECT UNIX_TIMESTAMP(datetimefield)
FROM table WHERE...";
AES Algorithm:
public static class CryptographyProvider
{
public static string EncryptString(string plainText, out string Key)
{
if (plainText == null || plainText.Length <= 0)
throw new ArgumentNullException("plainText");
using (Aes _aesAlg = Aes.Create())
{
Key = Convert.ToBase64String(_aesAlg.Key);
ICryptoTransform _encryptor = _aesAlg.CreateEncryptor(_aesAlg.Key, _aesAlg.IV);
using (MemoryStream _memoryStream = new MemoryStream())
{
_memoryStream.Write(_aesAlg.IV, 0, 16);
using (CryptoStream _cryptoStream = new CryptoStream(_memoryStream, _encryptor, CryptoStreamMode.Write))
{
using (StreamWriter _streamWriter = new StreamWriter(_cryptoStream))
{
_streamWriter.Write(plainText);
}
return Convert.ToBase64String(_memoryStream.ToArray());
}
}
}
}
public static string DecryptString(string cipherText, string Key)
{
if (string.IsNullOrEmpty(cipherText))
throw new ArgumentNullException("cipherText");
if (string.IsNullOrEmpty(Key))
throw new ArgumentNullException("Key");
string plaintext = null;
byte[] _initialVector = new byte[16];
byte[] _Key = Convert.FromBase64String(Key);
byte[] _cipherTextBytesArray = Convert.FromBase64String(cipherText);
byte[] _originalString = new byte[_cipherTextBytesArray.Length - 16];
Array.Copy(_cipherTextBytesArray, 0, _initialVector, 0, _initialVector.Length);
Array.Copy(_cipherTextBytesArray, 16, _originalString, 0, _cipherTextBytesArray.Length - 16);
using (Aes _aesAlg = Aes.Create())
{
_aesAlg.Key = _Key;
_aesAlg.IV = _initialVector;
ICryptoTransform decryptor = _aesAlg.CreateDecryptor(_aesAlg.Key, _aesAlg.IV);
using (MemoryStream _memoryStream = new MemoryStream(_originalString))
{
using (CryptoStream _cryptoStream = new CryptoStream(_memoryStream, decryptor, CryptoStreamMode.Read))
{
using (StreamReader _streamReader = new StreamReader(_cryptoStream))
{
plaintext = _streamReader.ReadToEnd();
}
}
}
}
return plaintext;
}
}
If you just wanted to change the example and put the table at the top, then loc='top'
in the table declaration is what you need,
the_table = ax.table(cellText=cell_text,
rowLabels=rows,
rowColours=colors,
colLabels=columns,
loc='top')
Then adjusting the plot with,
plt.subplots_adjust(left=0.2, top=0.8)
A more flexible option is to put the table in its own axis using subplots,
import numpy as np
import matplotlib.pyplot as plt
fig, axs =plt.subplots(2,1)
clust_data = np.random.random((10,3))
collabel=("col 1", "col 2", "col 3")
axs[0].axis('tight')
axs[0].axis('off')
the_table = axs[0].table(cellText=clust_data,colLabels=collabel,loc='center')
axs[1].plot(clust_data[:,0],clust_data[:,1])
plt.show()
which looks like this,
You are then free to adjust the locations of the axis as required.
public class Stack {
int[] arr;
int MAX_SIZE;
int top;
public Stack(int n){
MAX_SIZE = n;
arr = new int[MAX_SIZE];
top=0;
}
public boolean isEmpty(){
if(top ==0)
return true;
else
return false;
}
public boolean push(int ele){
if(top<MAX_SIZE){
arr[top] = ele;
top++;
return true;
}
else{
System.out.println("Stack is full");
return false;
}
}
public void show(){
for(int element:arr){
System.out.print(element+" ");
}
}
public int size(){
return top;
}
public int peek(){
if(!isEmpty()){
int peekTest = arr[top-1];
return peekTest;
}
else{
System.out.println("Stack is empty");
return 0;
}
}
public int pop(){
if(isEmpty()){
System.out.println("Stack is Emmpty");
return 0;
}
else{
int element = arr[--top];
return element;
}
}
}
I found it on this page: http://eslint.org/docs/user-guide/configuring
In package.json, this works:
"eslintConfig": {
"globals": {
"window": true
}
}
You can use lftp interactively in a shell script so the password not saved in .bash_history or similar by doing the following:
vi test_script.sh
Add the following to your file:
#!/bin/sh
HOST=<yourhostname>
USER=<someusername>
PASSWD=<yourpasswd>
cd <base directory for your put file>
lftp<<END_SCRIPT
open sftp://$HOST
user $USER $PASSWD
put local-file.name
bye
END_SCRIPT
And write/quit the vi editor after you edit the host, user, pass, and directory for your put file typing :wq
.Then make your script executable chmod +x test_script.sh
and execute it ./test_script.sh
.
I found a mathematical way to get this job done
Github repo - https://github.com/gayanSandamal/easy-php-image-resizer
Live example - https://plugins.nayague.com/easy-php-image-resizer/
<?php
//path for the image
$source_url = '2018-04-01-1522613288.PNG';
//separate the file name and the extention
$source_url_parts = pathinfo($source_url);
$filename = $source_url_parts['filename'];
$extension = $source_url_parts['extension'];
//define the quality from 1 to 100
$quality = 10;
//detect the width and the height of original image
list($width, $height) = getimagesize($source_url);
$width;
$height;
//define any width that you want as the output. mine is 200px.
$after_width = 200;
//resize only when the original image is larger than expected with.
//this helps you to avoid from unwanted resizing.
if ($width > $after_width) {
//get the reduced width
$reduced_width = ($width - $after_width);
//now convert the reduced width to a percentage and round it to 2 decimal places
$reduced_radio = round(($reduced_width / $width) * 100, 2);
//ALL GOOD! let's reduce the same percentage from the height and round it to 2 decimal places
$reduced_height = round(($height / 100) * $reduced_radio, 2);
//reduce the calculated height from the original height
$after_height = $height - $reduced_height;
//Now detect the file extension
//if the file extension is 'jpg', 'jpeg', 'JPG' or 'JPEG'
if ($extension == 'jpg' || $extension == 'jpeg' || $extension == 'JPG' || $extension == 'JPEG') {
//then return the image as a jpeg image for the next step
$img = imagecreatefromjpeg($source_url);
} elseif ($extension == 'png' || $extension == 'PNG') {
//then return the image as a png image for the next step
$img = imagecreatefrompng($source_url);
} else {
//show an error message if the file extension is not available
echo 'image extension is not supporting';
}
//HERE YOU GO :)
//Let's do the resize thing
//imagescale([returned image], [width of the resized image], [height of the resized image], [quality of the resized image]);
$imgResized = imagescale($img, $after_width, $after_height, $quality);
//now save the resized image with a suffix called "-resized" and with its extension.
imagejpeg($imgResized, $filename . '-resized.'.$extension);
//Finally frees any memory associated with image
//**NOTE THAT THIS WONT DELETE THE IMAGE
imagedestroy($img);
imagedestroy($imgResized);
}
?>
JavaScript will "convert" numeric string to integer, if you perform calculations on it (as JS is weakly typed). But you can convert it yourself using parseInt
or parseFloat
.
Just remember to put radix in parseInt
!
In case of integer inputs:
var x = parseInt(prompt("Enter a Value", "0"), 10);
var y = parseInt(prompt("Enter a Value", "0"), 10);
In case of float:
var x = parseFloat(prompt("Enter a Value", "0"));
var y = parseFloat(prompt("Enter a Value", "0"));
Hash functions for algorithmic use have usually 2 goals, first they have to be fast, second they have to evenly distibute the values across the possible numbers. The hash function also required to give the all same number for the same input value.
if your values are strings, here are some examples for bad hash functions:
string[0]
- the ASCII characters a-Z are way more often then othersstring.lengh()
- the most probable value is 1Good hash functions tries to use every bit of the input while keeping the calculation time minimal. If you only need some hash code, try to multiply the bytes with prime numbers, and sum them.
Can't add a comment to the excellent explanation in the other post but wanted to mention that a great documentation source can be found here.
It is enough to register an event function for accelerometer like so:
if(window.DeviceMotionEvent){
window.addEventListener("devicemotion", motion, false);
}else{
console.log("DeviceMotionEvent is not supported");
}
with the handler:
function motion(event){
console.log("Accelerometer: "
+ event.accelerationIncludingGravity.x + ", "
+ event.accelerationIncludingGravity.y + ", "
+ event.accelerationIncludingGravity.z
);
}
And for magnetometer a following event handler has to be registered:
if(window.DeviceOrientationEvent){
window.addEventListener("deviceorientation", orientation, false);
}else{
console.log("DeviceOrientationEvent is not supported");
}
with a handler:
function orientation(event){
console.log("Magnetometer: "
+ event.alpha + ", "
+ event.beta + ", "
+ event.gamma
);
}
There are also fields specified in the motion event for a gyroscope but that does not seem to be universally supported (e.g. it didn't work on a Samsung Galaxy Note).
There is a simple working code on GitHub
- (void)moveToPage {
NSUInteger pageIndex = ((ContentViewController *) [self.pageViewController.viewControllers objectAtIndex:0]).pageIndex;
pageIndex++;
ContentViewController *viewController = [self viewControllerAtIndex:pageIndex];
if (viewController == nil) {
return;
}
[self.pageViewController setViewControllers:@[viewController] direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:nil];
}
//now call this method
[self moveToPage];
I hope it works :)
Replacing localhost with 10.0.2.2 is correct, but you can alsor replace localhost with your physical machine's ip(it is better for debug purposes). Ofc, if ip is provided by dhcp you would have to change it each time...
Good luck!
This is my solution to deep remove empty properties with Lodash:
const compactDeep = obj => {
const emptyFields = [];
function calculateEmpty(prefix, source) {
_.each(source, (val, key) => {
if (_.isObject(val) && !_.isEmpty(val)) {
calculateEmpty(`${prefix}${key}.`, val);
} else if ((!_.isBoolean(val) && !_.isNumber(val) && !val) || (_.isObject(val) && _.isEmpty(val))) {
emptyFields.push(`${prefix}${key}`);
}
});
}
calculateEmpty('', obj);
return _.omit(obj, emptyFields);
};
A list of the few remaining cosmetic and packaging differences between Oracle JDK 11 and OpenJDK 11 can be found in this blog post:
https://blogs.oracle.com/java-platform-group/oracle-jdk-releases-for-java-11-and-later
In short:
Instead of using RequestContextHolder
directly, you can also use ServletUriComponentsBuilder
and its static methods:
ServletUriComponentsBuilder.fromCurrentContextPath()
ServletUriComponentsBuilder.fromCurrentServletMapping()
ServletUriComponentsBuilder.fromCurrentRequestUri()
ServletUriComponentsBuilder.fromCurrentRequest()
They use RequestContextHolder
under the hood, but provide additional flexibility to build new URLs using the capabilities of UriComponentsBuilder
.
Example:
ServletUriComponentsBuilder builder = ServletUriComponentsBuilder.fromCurrentRequestUri();
builder.scheme("https");
builder.replaceQueryParam("someBoolean", false);
URI newUri = builder.build().toUri();
In Oracle this would be a non issue:
SQL> delete from Employee where id = '01';
1 row deleted.
SQL> select id, last_name from Employee where id = '01';
no rows selected
SQL> rollback;
Rollback complete.
SQL> select * from Employee where id = '01';
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer
The asker commented:
I figure that if I understand a problem well enough to write a program that can figure it out, I don't need to do the work manually.
If he's writing a math expression solver as a learning exercise, using eval()
isn't going to help. Plus it's terrible design.
You might consider making a calculator using Reverse Polish Notation instead of standard math notation. It simplifies the parsing considerably. It would still be a good exercise
SELECT username, numb from(
Select username, count(username) as numb from customers GROUP BY username ) as my_table
WHERE numb > 3
Adding to what b_levitt said, you can get the SSDT-BI plugin for Visual Studio 2013 here: http://www.microsoft.com/en-us/download/details.aspx?id=42313
But while mocking read-only properties means properties with getter method only you should declare it as virtual otherwise System.NotSupportedException will be thrown because it is only supported in VB as moq internally override and create proxy when we mock anything.
You need to:
Code:
import tensorflow as tf
import matplotlib.pyplot as plt
import PIL
...
image_tensor = <your decoded image tensor>
jpeg_bin_tensor = tf.image.encode_jpeg(image_tensor)
with tf.Session() as sess:
# display encoded back to image data
jpeg_bin = sess.run(jpeg_bin_tensor)
jpeg_str = StringIO.StringIO(jpeg_bin)
jpeg_image = PIL.Image.open(jpeg_str)
plt.imshow(jpeg_image)
This worked for me. You can try it in a ipython notebook. Just don't forget to add the following line:
%matplotlib inline
ou are able to create local variables once you call the render function on a partial, therefore if you want to customize a partial you can for example render the partial _form.html.erb
by:
<%= render 'form', button_label: "Create New Event", url: new_event_url %>
<%= render 'form', button_label: "Update Event", url: edit_event_url %>
this way you can access in the partial to the label for the button and the URL, those are different if you try to create or update a record.
finally, for accessing to this local variables you have to put in your code local_assigns[:button_label]
(local_assigns[:name_of_your_variable]
)
<%=form_for(@event, url: local_assigns[:url]) do |f| %>
<%= render 'shared/error_messages_events' %>
<%= f.label :title ,"Title"%>
<%= f.text_field :title, class: 'form-control'%>
<%=f.label :date, "Date"%>
<%=f.date_field :date, class: 'form-control' %>
<%=f.label :description, "Description"%>
<%=f.text_area :description, class: 'form-control' %>
<%= f.submit local_assigns[:button_label], class:"btn btn-primary"%>
<%end%>
Try the fat-jar extension. It will include all external jars inside the jar.
Note: This answer refers/adds to Sotirios Delimanolis's answer and comment.
I tried to get it to work with Map<Class, ParameterizedTypeReference<ResponseWrapper<?>>>
, as indicated in Sotirios's comment, but couldn't without an example.
In the end, I dropped the wildcard and parametrisation from ParameterizedTypeReference and used raw types instead, like so
Map<Class<?>, ParameterizedTypeReference> typeReferences = new HashMap<>();
typeReferences.put(MyClass1.class, new ParameterizedTypeReference<ResponseWrapper<MyClass1>>() { });
typeReferences.put(MyClass2.class, new ParameterizedTypeReference<ResponseWrapper<MyClass2>>() { });
...
ParameterizedTypeReference typeRef = typeReferences.get(clazz);
ResponseEntity<ResponseWrapper<T>> response = restTemplate.exchange(
uri,
HttpMethod.GET,
null,
typeRef);
and this finally worked.
If anyone has an example with parametrisation, I'd be very grateful to see it.
This is the simplest way of changing one date format to another
public String changeDateFormatFromAnother(String date){
@SuppressLint("SimpleDateFormat") DateFormat inputFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
@SuppressLint("SimpleDateFormat") DateFormat outputFormat = new SimpleDateFormat("dd MMMM yyyy");
String resultDate = "";
try {
resultDate=outputFormat.format(inputFormat.parse(date));
} catch (ParseException e) {
e.printStackTrace();
}
return resultDate;
}
I've occasionally thought that it might serve a purpose to add a layer of security by obscuring the back-end interpreter through a remapping of .php or whatever to .aspx or whatever so that any potential hacker would be sent down the wrong path, at least for a while. I never bothered to try it and I don't do a lot of webserver work any more so I'm unlikely to.
However, I'd be interested in the perspective of an experienced server admin on that notion.
It's working (mysql) :
SELECT TABLE_NAME , count(COLUMN_NAME)
FROM information_schema.columns
GROUP BY TABLE_NAME
Enable billing for Google project fixed the problem.
It's good practise to extend from a baseController
and implement some base functions
implement a function to check if the user instance is null like this
if the user form the Userinterface
then there is no user logged in
/**
*/
class BaseController extends AbstractController
{
/**
* @return User
*/
protected function getUser(): ?User
{
return parent::getUser();
}
/**
* @return bool
*/
protected function isUserLoggedIn(): bool
{
return $this->getUser() instanceof User;
}
}
You can use the WSDL2JAVA Codegen (or) You can simply use the 'Web Service/WebServiceClient' Wizard available in the Eclipse IDE. Open the IDE and press 'Ctrl+N', selectfor 'Web Service/WebServiceClient', specify the wsdl URL, ouput folder and select finish.
It creates the complete source files that you would need.
I was getting this issue on WSL on Windows while connecting to AWS instance. My issue got resolved by witching to classic Command prompt. You can try switching to a different terminal interface and see if that helps.
You need to set TextView Gravity (Center Horizontal & Center Vertical) like this:
android:layout_centerHorizontal="true"
and
android:layout_centerVertical="true"
And dynamically using:
textview.setGravity(Gravity.CENTER);
textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL);
I share my solution (assuming everything is already configured to connect to google bucket in flask)
from google.cloud import storage
@app.route('/upload/', methods=['POST'])
def upload():
if request.method == 'POST':
# FileStorage object wrapper
file = request.files["file"]
if file:
os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = app.config['GOOGLE_APPLICATION_CREDENTIALS']
bucket_name = "bucket_name"
storage_client = storage.Client()
bucket = storage_client.bucket(bucket_name)
# Upload file to Google Bucket
blob = bucket.blob(file.filename)
blob.upload_from_string(file.read())
My post
Here is a rough but more declarative solution. I haven't been able to get it down to a single annotation, but this seems to work well. Also not sure about performance on large data sets.
Given this JSON:
{
"list": [
{
"wrapper": {
"name": "Jack"
}
},
{
"wrapper": {
"name": "Jane"
}
}
]
}
And these model objects:
public class RootObject {
@JsonProperty("list")
@JsonDeserialize(contentUsing = SkipWrapperObjectDeserializer.class)
@SkipWrapperObject("wrapper")
public InnerObject[] innerObjects;
}
and
public class InnerObject {
@JsonProperty("name")
public String name;
}
Where the Jackson voodoo is implemented like:
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface SkipWrapperObject {
String value();
}
and
public class SkipWrapperObjectDeserializer extends JsonDeserializer<Object> implements
ContextualDeserializer {
private Class<?> wrappedType;
private String wrapperKey;
public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
BeanProperty property) throws JsonMappingException {
SkipWrapperObject skipWrapperObject = property
.getAnnotation(SkipWrapperObject.class);
wrapperKey = skipWrapperObject.value();
JavaType collectionType = property.getType();
JavaType collectedType = collectionType.containedType(0);
wrappedType = collectedType.getRawClass();
return this;
}
@Override
public Object deserialize(JsonParser parser, DeserializationContext ctxt)
throws IOException, JsonProcessingException {
ObjectMapper mapper = new ObjectMapper();
ObjectNode objectNode = mapper.readTree(parser);
JsonNode wrapped = objectNode.get(wrapperKey);
Object mapped = mapIntoObject(wrapped);
return mapped;
}
private Object mapIntoObject(JsonNode node) throws IOException,
JsonProcessingException {
JsonParser parser = node.traverse();
ObjectMapper mapper = new ObjectMapper();
return mapper.readValue(parser, wrappedType);
}
}
Hope this is useful to someone!
Never construct BigDecimals from floats or doubles. Construct them from ints or strings. floats and doubles loose precision.
This code works as expected (I just changed the type from double to String):
public static void main(String[] args) {
String doubleVal = "1.745";
String doubleVal1 = "0.745";
BigDecimal bdTest = new BigDecimal( doubleVal);
BigDecimal bdTest1 = new BigDecimal( doubleVal1 );
bdTest = bdTest.setScale(2, BigDecimal.ROUND_HALF_UP);
bdTest1 = bdTest1.setScale(2, BigDecimal.ROUND_HALF_UP);
System.out.println("bdTest:"+bdTest); //1.75
System.out.println("bdTest1:"+bdTest1);//0.75, no problem
}
Once had this issue, thought it reasonable to share how I resolved it;
I think the way to do that in php is to use the header function as:
header ("Location: exampleFile.php");
You could just enclose that header file in an if statement so that it redirects only when a certain condition is met, as in:
if (isset($_POST['submit'])){ header("Location: exampleFile.php") }
Hope that helps.
This is how to assign a value to a variable:
SELECT @EmpID = Id
FROM dbo.Employee
However, the above query is returning more than one value. You'll need to add a WHERE
clause in order to return a single Id
value.
I found my actual problem and it was not mentioned in any answer: some of my unit-tests were causing logging initialization code to be run multiple times within the same test suite, messing up the logging on the later tests.
In your CSS add...
filter: opacity(50%);
In JavaScript use...
element.style.filter='opacity(50%)';
NB: Add vendor prefixes as required but Chromium should be fine without.
I can confirm that the approach in the question is sufficient to trigger the images to be downloaded and cached (unless you have forbidden the browser from doing so via your response headers) in, at least:
To test this, I made a small webapp with several endpoints that each sleep for 10 seconds before serving a picture of a kitten. Then I added two webpages, one of which contained a <script>
tag in which each of the kittens is preloaded using the preloadImage
function from the question, and the other of which includes all the kittens on the page using <img>
tags.
In all the browsers above, I found that if I visited the preloader page first, waited a while, and then went to the page with the <img>
tags, my kittens rendered instantly. This demonstrates that the preloader successfully loaded the kittens into the cache in all browsers tested.
You can see or try out the application I used to test this at https://github.com/ExplodingCabbage/preloadImage-test.
Note in particular that this technique works in the browsers above even if the number of images being looped over exceeds the number of parallel requests that the browser is willing to make at a time, contrary to what Robin's answer suggests. The rate at which your images preload will of course be limited by how many parallel requests the browser is willing to send, but it will eventually request each image URL you call preloadImage()
on.
This page keeps references to implementations in various languages, including Java, and compares features: http://kjur.github.io/jsjws/index_mat.html
To read binary ASCII characters with great speed using only your head:
Letters start with leading bits 01. Bit 3 is on (1) for lower case, off (0) for capitals. Scan the following bits 4–8 for the first that is on, and select the starting letter from the same index in this string: “PHDBA” (think P.H.D., Bachelors in Arts). E.g. 1xxxx = P, 01xxx = H, etc. Then convert the remaining bits to an integer value (e.g. 010 = 2), and count that many letters up from your starting letter. E.g. 01001010 => H+2 = J.
This is supported by IE too:
HTML
class="disabled"
CSS
.disabled{
...
}
You can do this using Input.setSelectionRange
, part of the Range API for interacting with text selections and the text cursor:
var searchInput = $('#Search');
// Multiply by 2 to ensure the cursor always ends up at the end;
// Opera sometimes sees a carriage return as 2 characters.
var strLength = searchInput.val().length * 2;
searchInput.focus();
searchInput[0].setSelectionRange(strLength, strLength);
Demo: Fiddle
Let's suppose you have two different classes:
public class Person
{
public string Name, Email;
public Person(string name, string email)
{
Name = name;
Email = email;
}
}
class Data
{
public string Mail, SlackId;
public Data(string mail, string slackId)
{
Mail = mail;
SlackId = slackId;
}
}
Now, let's Prepare data to work with:
var people = new Person[]
{
new Person("Sudi", "[email protected]"),
new Person("Simba", "[email protected]"),
new Person("Sarah", string.Empty)
};
var records = new Data[]
{
new Data("[email protected]", "Sudi_Try"),
new Data("[email protected]", "Sudi@Test"),
new Data("[email protected]", "SimbaLion")
};
You will note that [email protected] has got two slackIds. I have made that for demonstrating how Join works.
Let's now construct the query to join Person with Data:
var query = people.Join(records,
x => x.Email,
y => y.Mail,
(person, record) => new { Name = person.Name, SlackId = record.SlackId});
Console.WriteLine(query);
After constructing the query, you could also iterate over it with a foreach like so:
foreach (var item in query)
{
Console.WriteLine($"{item.Name} has Slack ID {item.SlackId}");
}
Let's also output the result for GroupJoin:
Console.WriteLine(
people.GroupJoin(
records,
x => x.Email,
y => y.Mail,
(person, recs) => new {
Name = person.Name,
SlackIds = recs.Select(r => r.SlackId).ToArray() // You could materialize //whatever way you want.
}
));
You will notice that the GroupJoin will put all SlackIds in a single group.
You can also use the first argument of the command line arguments:
String exePath = System.Environment.GetCommandLineArgs()[0]
IMHO this is the best way to write your line :
private static final Map<Class<? extends Persistent>, PersistentHelper> class2helper =
new HashMap<Class<? extends Persistent>, PersistentHelper>();
This way the increased indentation without any braces can help you to see that the code was just splited because the line was too long. And instead of 4 spaces, 8 will make it clearer.
The listings package is quite nice and very flexible (e.g. different sizes for comments and code).
MyEmail.Body = string.Format("The validation is done at {0:HH:mm:ss} Hrs.",DateTime.Now);
Can Use {0:HH:mm:ss}
, {0:HH:mm:ss.fff}
, {0:DD/mm/yyy HH:mm:ss}
, etc...
return JsonConvert.SerializeObject(images.ToList(), Formatting.None, new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.None, ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
using Newtonsoft.Json;
You can use int casting which allows the base specification.
int(b, 2) # Convert a binary string to a decimal int.
@variable
is very useful if calling stored procedures from an application written in Java , Python etc.
There are ocassions where variable values are created in the first call and needed in functions of subsequent calls.
The advantage can be seen in Oracle PL/SQL where these variables have 3 different scopes:
I have developed an architecture in which the complete code is written in PL/SQL. These are called from a middle-ware written in Java. There are two types of middle-ware. One to cater calls from a client which is also written in Java. The other other one to cater for calls from a browser. The client facility is implemented 100 percent in JavaScript. A command set is used instead of HTML and JavaScript for writing application in PL/SQL.
I have been looking for the same facility to port the codes written in PL/SQL to another database. The nearest one I have found is Postgres. But all the variables have function scope.
@
in MySQLI am happy to see that at least this @
facility is there in MySQL. I don't think Oracle will build same facility available in PL/SQL to MySQL stored procedures since it may affect the sales of Oracle database.
$timeFirst = strtotime('2011-05-12 18:20:20');
$timeSecond = strtotime('2011-05-13 18:20:20');
$differenceInSeconds = $timeSecond - $timeFirst;
You will then be able to use the seconds to find minutes, hours, days, etc.
If you are using the latest version of Android studio. then you don't need to install additional software for Git other than GIT itself - https://git-scm.com/downloads
Steps
That's it. You can find your project on your github now
Use this code:
=IFERROR((This Year/Last Year)-1,IF(AND(D2=0,E2=0),0,1))
The first part of this code iferror gets rid of the N/A issues when there is a negative or a 0 value. It does this by looking at the values in e2 and d2 and makes sure they are not both 0. If they are both 0 then it will place a 0%. If only one of the cells are a 0 then it will place 100% or -100% depending on where the 0 value falls. The second part of this code (e2/d2)-1 is the same code as (this year - lastyear)/Last year
Please also check your encoding: Google encodes spaces as +
instead of %20
. This may result in an invalid image link.
Use @ViewChildren
from @angular/core
to get a reference to the components
template
<div *ngFor="let v of views">
<customcomponent #cmp></customcomponent>
</div>
component
import { ViewChildren, QueryList } from '@angular/core';
/** Get handle on cmp tags in the template */
@ViewChildren('cmp') components:QueryList<CustomComponent>;
ngAfterViewInit(){
// print array of CustomComponent objects
console.log(this.components.toArray());
}
There are two ways, depending on your original timestamp:
mktime()
and timegm()
OpenSSL command line app does not display any characters when you are entering your password. Just type it then press enter and you will see that it is working.
You can also use openssl pkcs12 -export -inkey mykey.key -in developer_identity.pem -out iphone_dev.p12 -password pass:YourPassword
to pass the password YourPassword
from command line. Please take a look at section Pass Phrase Options in OpenSSL manual for more information.
$.extend($.expr[':'], {
unchecked: function (obj) {
return ((obj.type == 'checkbox' || obj.type == 'radio') && !$(obj).is(':checked'));
}
});
$("input:checked")
$("input:unchecked")
Once after we build the jar will have the resource files under BOOT-INF/classes or target/classes folder, which is in classpath, use the below method and pass the file under the src/main/resources as method call getAbsolutePath("certs/uat_staging_private.ppk"), even we can place this method in Utility class and the calling Thread instance will be taken to load the ClassLoader to get the resource from class path.
public String getAbsolutePath(String fileName) throws IOException {
return Thread.currentThread().getContextClassLoader().getResource(fileName).getFile();
}
we can add the below tag to tag in pom.xml to include these resource files to build target/classes folder
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.ppk</include>
</includes>
</resource>
</resources>
Simple Solution
radioSection.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group1, int checkedId1) {
switch (checkedId1) {
case R.id.rbSr://radiobuttonID
//do what you want
break;
case R.id.rbJr://radiobuttonID
//do what you want
break;
}
}
});
It's also possible to specify the ForeignKey()
attribute on the navigation property:
[ForeignKey("HomeTeamID")]
public virtual Team HomeTeam { get; set; }
[ForeignKey("GuestTeamID")]
public virtual Team GuestTeam { get; set; }
That way you don't need to add any code to the OnModelCreate
method
The proper way of using NSLog, as the warning tries to explain, is the use of a formatter, instead of passing in a literal:
Instead of:
NSString *digit = [[sender titlelabel] text];
NSLog(digit);
Use:
NSString *digit = [[sender titlelabel] text];
NSLog(@"%@",digit);
It will still work doing that first way, but doing it this way will get rid of the warning.
At a guess, you used Code::Blocks to create a Console Application project. Such a project does not link in the GDI stuff, because console applications are generally not intended to do graphics, and TextOut
is a graphics function. If you want to use the features of the GDI, you should create a Win32 Gui Project, which will be set up to link in the GDI for you.
Expanding off of what @twalberg and @iconoclast had, if you're using cmd for whatever reason, you can use:
FOR /F "usebackq" %x IN (`"git branch | grep '*' | cut -f2 -d' '"`) DO FOR /F "usebackq" %y IN (`"git merge-base %x master"`) DO git diff --name-only %x %y
Here's a picture explaining the difference between pageY
and clientY
.
Same for pageX
and clientX
, respectively.
pageX/Y
coordinates are relative to the top left corner of the whole rendered page (including parts hidden by scrolling),
while clientX/Y
coordinates are relative to the top left corner of the visible part of the page, "seen" through browser window.
You'll probably never need screenX/Y
Try this:
import pytz
import datetime
fmt = '%Y-%m-%d %H:%M:%S %Z'
d = datetime.datetime.now(pytz.timezone("America/New_York"))
d_string = d.strftime(fmt)
d2 = pytz.timezone('America/New_York').localize(d.strptime(d_string,fmt), is_dst=None)
print(d_string)
print(d2.strftime(fmt))
If both application have the same signature (meaning that both APPS are yours and signed with the same key), you can call your other app activity as follows:
Intent LaunchIntent = getActivity().getPackageManager().getLaunchIntentForPackage(CALC_PACKAGE_NAME);
startActivity(LaunchIntent);
Hope it helps.
if don't work above port id then change it.like 8082,8080 Restart xammp,Start apache server,Check it.It's now working.
Here's a simple example of how to load JSON data into an Angular model.
I have a JSON 'GET' web service which returns a list of Customer details, from an online copy of Microsoft's Northwind SQL Server database.
http://www.iNorthwind.com/Service1.svc/getAllCustomers
It returns some JSON data which looks like this:
{
"GetAllCustomersResult" :
[
{
"CompanyName": "Alfreds Futterkiste",
"CustomerID": "ALFKI"
},
{
"CompanyName": "Ana Trujillo Emparedados y helados",
"CustomerID": "ANATR"
},
{
"CompanyName": "Antonio Moreno Taquería",
"CustomerID": "ANTON"
}
]
}
..and I want to populate a drop down list with this data, to look like this...
I want the text of each item to come from the "CompanyName" field, and the ID to come from the "CustomerID" fields.
How would I do it ?
My Angular controller would look like this:
function MikesAngularController($scope, $http) {
$scope.listOfCustomers = null;
$http.get('http://www.iNorthwind.com/Service1.svc/getAllCustomers')
.success(function (data) {
$scope.listOfCustomers = data.GetAllCustomersResult;
})
.error(function (data, status, headers, config) {
// Do some error handling here
});
}
... which fills a "listOfCustomers" variable with this set of JSON data.
Then, in my HTML page, I'd use this:
<div ng-controller='MikesAngularController'>
<span>Please select a customer:</span>
<select ng-model="selectedCustomer" ng-options="customer.CustomerID as customer.CompanyName for customer in listOfCustomers" style="width:350px;"></select>
</div>
And that's it. We can now see a list of our JSON data on a web page, ready to be used.
The key to this is in the "ng-options" tag:
customer.CustomerID as customer.CompanyName for customer in listOfCustomers
It's a strange syntax to get your head around !
When the user selects an item in this list, the "$scope.selectedCustomer" variable will be set to the ID (the CustomerID field) of that Customer record.
The full script for this example can be found here:
Mike
Put the line
$this->db->order_by("course_name","desc");
at top of your query. Like
$this->db->order_by("course_name","desc");$this->db->select('*');
$this->db->where('tennant_id',$tennant_id);
$this->db->from('courses');
$query=$this->db->get();
return $query->result();
Yes it's an issue in webkit and also reported in chromium: http://code.google.com/p/chromium/issues/detail?id=773 It's there since 2008... and still not fixed!!
I'm using a piece of javacsript and jQuery to make my way around this.
function showAlt(){$(this).replaceWith(this.alt)};
function addShowAlt(selector){$(selector).error(showAlt).attr("src", $(selector).src)};
addShowAlt("img");
If you only want one some images:
addShowAlt("#myImgID");
It is easy to write text to a canvas. Lets say that you canvas is declared like below.
<html>
<canvas id="YourCanvas" width="500" height="500">
Your Internet Browser does not support HTML5 (Get a new Browser)
</canvas>
</html>
This part of the code returns a variable into canvas which is a representation of your canvas in HTML.
var c = document.getElementById("YourCanvas");
The following code returns the methods for drawing lines, text, fills to your canvas.
var ctx = canvas.getContext("2d");
<script>
ctx.font="20px Times Roman";
ctx.fillText("Hello World!",50,100);
ctx.font="30px Verdana";
var g = ctx.createLinearGradient(0,0,c.width,0);
g.addColorStop("0","magenta");
g.addColorStop("0.3","blue");
g.addColorStop("1.0","red");
ctx.fillStyle=g; //Sets the fille of your text here. In this case it is set to the gradient that was created above. But you could set it to Red, Green, Blue or whatever.
ctx.fillText("This is some new and funny TEXT!",40,190);
</script>
There is a beginners guide out on Amazon for the kindle http://www.amazon.com/HTML5-Canvas-Guide-Beginners-ebook/dp/B00JSFVY9O/ref=sr_1_4?ie=UTF8&qid=1398113376&sr=8-4&keywords=html5+canvas+beginners that is well worth the money. I purchased it a couple of days ago and it showed me a lot of simple techniques that were very useful.
XML:
<foo>
<bar>
<type foobar="1"/>
<type foobar="2"/>
</bar>
</foo>
Python code:
import xml.etree.cElementTree as ET
tree = ET.parse("foo.xml")
root = tree.getroot()
root_tag = root.tag
print(root_tag)
for form in root.findall("./bar/type"):
x=(form.attrib)
z=list(x)
for i in z:
print(x[i])
Output:
foo
1
2
You have to use
<iframe title="YouTube video player" width="480" height="390" src="http://www.youtube.com/embed/zGPuazETKkI?autoplay=1" frameborder="0" allowfullscreen></iframe>
?autoplay=1
and not
&autoplay=1
its the first URL param so its added with a ?
Try using TabulaPDF (https://github.com/tabulapdf/tabula) . This is very good library to extract table content from the PDF file. It is very as expected.
Good luck. :)
openssl pkcs12 -in YOUR_CERTIFICATE.p12 -out YOUR_CERTIFICATE.pem -nodes -clcerts
Check with "uname -a" and/or "lsb_release -a" to see which version of Linux you are actually running on your AWS instance. The default Amazon AMI image uses YUM for its package manager.
The Difference
There are a few characters which can indicate a new line. The usual ones are these two:
* '\n' or '0x0A' (10 in decimal) -> This character is called "Line Feed" (LF).
* '\r' or '0x0D' (13 in decimal) -> This one is called "Carriage return" (CR).
Different Operating Systems handle newlines in a different way. Here is a short list of the most common ones:
* DOS and Windows
They expect a newline to be the combination of two characters, namely '\r\n' (or 13 followed by 10).
* Unix (and hence Linux as well)
Unix uses a single '\n' to indicate a new line.
* Mac
Macs use a single '\r'
.
Taken from Here
First of All you should download the Android SDK.
Download here:
http://developer.android.com/sdk/index.html
Then, as stated in the SDK README:
The Android SDK archive now only contains the tools. It no longer comes populated with a specific Android platform or Google add-on. Instead you use the SDK Manager to install or update SDK components such as platforms, tools, add-ons, and documentation.
In Python 3 this is no longer an issue, and you really don't want to use list comprehension, coercion, filters, functions or lambdas for something like this.
Just use
popped = unpopped[:-1]
Remember that it's an immutable, so you will have to reassign the value if you want it to change
my_tuple = my_tuple[:-1]
Example
>>> foo= 3,5,2,4,78,2,1
>>> foo
(3, 5, 2, 4, 78, 2, 1)
foo[:-1]
(3, 5, 2, 4, 78, 2)
Below Steps resolved my issue.
Go to ./m2/repository folder.
Go to respective archive error folder.
Verify any zip file is exist.
delete error name folder.
Now come to Eclipse Project - Right Click - Maven - > Update Project.
Above trick works for me.
IsEmpty returns True if the variable is uninitialized, or is explicitly set to Empty; otherwise, it returns False. False is always returned if expression contains more than one variable. IsEmpty only returns meaningful information for variants. (https://msdn.microsoft.com/en-us/library/office/gg264227.aspx) . So you must check every cell in range separately:
Dim thisColumn as Byte, thisRow as Byte
For thisColumn = 1 To 5
For ThisRow = 1 To 6
If IsEmpty(Cells(thisRow, thisColumn)) = False Then
GoTo RangeIsNotEmpty
End If
Next thisRow
Next thisColumn
...........
RangeIsNotEmpty:
Of course here are more code than in solution with CountA function which count not empty cells, but GoTo can interupt loops if at least one not empty cell is found and do your code faster especially if range is large and you need to detect this case. Also this code for me is easier to understand what it is doing, than with Excel CountA function which is not VBA function.
Add one line of code after setContentView() in onCreate()
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_flag);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}
The given answer is correct nontheless as someone above said you can use df.query('line_race != 0')
which depending on your problem is much faster. Highly recommend.
Try this. It is in VB.net and you need to convert it to Javascript. This function accepts parameters in decimal minutes.
Private Function calculateDistance(ByVal long1 As String, ByVal lat1 As String, ByVal long2 As String, ByVal lat2 As String) As Double
long1 = Double.Parse(long1)
lat1 = Double.Parse(lat1)
long2 = Double.Parse(long2)
lat2 = Double.Parse(lat2)
'conversion to radian
lat1 = (lat1 * 2.0 * Math.PI) / 60.0 / 360.0
long1 = (long1 * 2.0 * Math.PI) / 60.0 / 360.0
lat2 = (lat2 * 2.0 * Math.PI) / 60.0 / 360.0
long2 = (long2 * 2.0 * Math.PI) / 60.0 / 360.0
' use to different earth axis length
Dim a As Double = 6378137.0 ' Earth Major Axis (WGS84)
Dim b As Double = 6356752.3142 ' Minor Axis
Dim f As Double = (a - b) / a ' "Flattening"
Dim e As Double = 2.0 * f - f * f ' "Eccentricity"
Dim beta As Double = (a / Math.Sqrt(1.0 - e * Math.Sin(lat1) * Math.Sin(lat1)))
Dim cos As Double = Math.Cos(lat1)
Dim x As Double = beta * cos * Math.Cos(long1)
Dim y As Double = beta * cos * Math.Sin(long1)
Dim z As Double = beta * (1 - e) * Math.Sin(lat1)
beta = (a / Math.Sqrt(1.0 - e * Math.Sin(lat2) * Math.Sin(lat2)))
cos = Math.Cos(lat2)
x -= (beta * cos * Math.Cos(long2))
y -= (beta * cos * Math.Sin(long2))
z -= (beta * (1 - e) * Math.Sin(lat2))
Return Math.Sqrt((x * x) + (y * y) + (z * z))
End Function
Edit The converted function in javascript
function calculateDistance(lat1, long1, lat2, long2)
{
//radians
lat1 = (lat1 * 2.0 * Math.PI) / 60.0 / 360.0;
long1 = (long1 * 2.0 * Math.PI) / 60.0 / 360.0;
lat2 = (lat2 * 2.0 * Math.PI) / 60.0 / 360.0;
long2 = (long2 * 2.0 * Math.PI) / 60.0 / 360.0;
// use to different earth axis length
var a = 6378137.0; // Earth Major Axis (WGS84)
var b = 6356752.3142; // Minor Axis
var f = (a-b) / a; // "Flattening"
var e = 2.0*f - f*f; // "Eccentricity"
var beta = (a / Math.sqrt( 1.0 - e * Math.sin( lat1 ) * Math.sin( lat1 )));
var cos = Math.cos( lat1 );
var x = beta * cos * Math.cos( long1 );
var y = beta * cos * Math.sin( long1 );
var z = beta * ( 1 - e ) * Math.sin( lat1 );
beta = ( a / Math.sqrt( 1.0 - e * Math.sin( lat2 ) * Math.sin( lat2 )));
cos = Math.cos( lat2 );
x -= (beta * cos * Math.cos( long2 ));
y -= (beta * cos * Math.sin( long2 ));
z -= (beta * (1 - e) * Math.sin( lat2 ));
return (Math.sqrt( (x*x) + (y*y) + (z*z) )/1000);
}
try os.path.exists
this will check for the path and return True
if exists and False
if not.
I regularly use IntelliJ, PHPStorm and WebStorm. Would love to only use IntelliJ. As pointed out by the vendor the "Open Directory" functionality not being in IntelliJ is painful.
Now for the rub part; I have tried using IntelliJ as my single IDE and have found performance to be terrible compared to the lighter weight versions. Intellisense is almost useless in IntelliJ compared to WebStorm.
I like this approach because it is simple and clean:
String getCompaniesIdAndName = " select "
+ " c.id as id, "
+ " c.name as name "
+ " from Company c ";
@Query(value = getCompaniesWithoutAccount)
Set<CompanyIdAndName> findAllIdAndName();
public static interface CompanyIdAndName extends DTO {
Integer getId();
String getName();
}
I have the same problem, but you know why? because I didn't put .txt in the end of my File and so it was File not a textFile, you shoud do just two things:
There are several approaches to customize the error handling behavior with JAX-RS. Here are three of the easier ways.
The first approach is to create an Exception class that extends WebApplicationException.
Example:
public class NotAuthorizedException extends WebApplicationException {
public NotAuthorizedException(String message) {
super(Response.status(Response.Status.UNAUTHORIZED)
.entity(message).type(MediaType.TEXT_PLAIN).build());
}
}
And to throw this newly create Exception you simply:
@Path("accounts/{accountId}/")
public Item getItem(@PathParam("accountId") String accountId) {
// An unauthorized user tries to enter
throw new NotAuthorizedException("You Don't Have Permission");
}
Notice, you don't need to declare the exception in a throws clause because WebApplicationException is a runtime Exception. This will return a 401 response to the client.
The second and easier approach is to simply construct an instance of the WebApplicationException
directly in your code. This approach works as long as you don't have to implement your own application Exceptions.
Example:
@Path("accounts/{accountId}/")
public Item getItem(@PathParam("accountId") String accountId) {
// An unauthorized user tries to enter
throw new WebApplicationException(Response.Status.UNAUTHORIZED);
}
This code too returns a 401 to the client.
Of course, this is just a simple example. You can make the Exception much more complex if necessary, and you can generate what ever http response code you need to.
One other approach is to wrap an existing Exception, perhaps an ObjectNotFoundException
with an small wrapper class that implements the ExceptionMapper
interface annotated with a @Provider
annotation. This tells the JAX-RS runtime, that if the wrapped Exception is raised, return the response code defined in the ExceptionMapper
.
An md5 encryption is one of the worst, because you have to turn the code and it is already decrypted. I would recommend you the SHA256. I'm programming a bit longer and have had a good experience. Below would also be an encryption.
password_hash() example using Argon2i
<?php
echo 'Argon2i hash: ' . password_hash('rasmuslerdorf', PASSWORD_ARGON2I);
?>
The above example will output something similar to:
Argon2i hash: $argon2i$v=19$m=1024,t=2,p=2$YzJBSzV4TUhkMzc3d3laeg$zqU/1IN0/AogfP4cmSJI1vc8lpXRW9/S0sYY2i2jHT0
There's only one registered mediatype for SVG, and that's the one you listed, image/svg+xml
. You can of course serve SVG as XML too, though browsers tend to behave differently in some scenarios if you do, for example I've seen cases where SVG used in CSS backgrounds fail to display unless served with the image/svg+xml
mediatype.
sign of remainder will be same as the divisible and the sign of modulus will be same as divisor.
Remainder is simply the remaining part after the arithmetic division between two integer number whereas Modulus is the sum of remainder and divisor when they are oppositely signed and remaining part after the arithmetic division when remainder and divisor both are of same sign.
Example of Remainder:
10 % 3 = 1 [here divisible is 10 which is positively signed so the result will also be positively signed]
-10 % 3 = -1 [here divisible is -10 which is negatively signed so the result will also be negatively signed]
10 % -3 = 1 [here divisible is 10 which is positively signed so the result will also be positively signed]
-10 % -3 = -1 [here divisible is -10 which is negatively signed so the result will also be negatively signed]
Example of Modulus:
5 % 3 = 2 [here divisible is 5 which is positively signed so the remainder will also be positively signed and the divisor is also positively signed. As both remainder and divisor are of same sign the result will be same as remainder]
-5 % 3 = 1 [here divisible is -5 which is negatively signed so the remainder will also be negatively signed and the divisor is positively signed. As both remainder and divisor are of opposite sign the result will be sum of remainder and divisor -2 + 3 = 1]
5 % -3 = -1 [here divisible is 5 which is positively signed so the remainder will also be positively signed and the divisor is negatively signed. As both remainder and divisor are of opposite sign the result will be sum of remainder and divisor 2 + -3 = -1]
-5 % -3 = -2 [here divisible is -5 which is negatively signed so the remainder will also be negatively signed and the divisor is also negatively signed. As both remainder and divisor are of same sign the result will be same as remainder]
I hope this will clearly distinguish between remainder and modulus.
Step 1:Create a XML File
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="@+id/lvItems"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
Step 2:Studnet.java
package com.scancode.acutesoft.telephonymanagerapp;
public class Student
{
String email,phone,address;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
}
Step 3:MainActivity.java
package com.scancode.acutesoft.telephonymanagerapp;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends Activity {
ListView lvItems;
ArrayList<Student> studentArrayList ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lvItems = (ListView) findViewById(R.id.lvItems);
studentArrayList = new ArrayList<Student>();
dataSaving();
CustomAdapter adapter = new CustomAdapter(MainActivity.this,studentArrayList);
lvItems.setAdapter(adapter);
}
private void dataSaving() {
Student student = new Student();
student.setEmail("[email protected]");
student.setPhone("1234567890");
student.setAddress("Hyderabad");
studentArrayList.add(student);
student = new Student();
student.setEmail("[email protected]");
student.setPhone("1234567890");
student.setAddress("Banglore");
studentArrayList.add(student);
student = new Student();
student.setEmail("[email protected]");
student.setPhone("1234567890");
student.setAddress("Banglore");
studentArrayList.add(student);
student = new Student();
student.setEmail("[email protected]");
student.setPhone("1234567890");
student.setAddress("Banglore");
studentArrayList.add(student);
}
}
Step 4:CustomAdapter.java
package com.scancode.acutesoft.telephonymanagerapp;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import java.util.ArrayList;
public class CustomAdapter extends BaseAdapter
{
ArrayList<Student> studentList;
Context mContext;
public CustomAdapter(Context context, ArrayList<Student> studentArrayList) {
this.mContext = context;
this.studentList = studentArrayList;
}
@Override
public int getCount() {
return studentList.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Student student = studentList.get(position);
convertView = LayoutInflater.from(mContext).inflate(R.layout.student_row,null);
TextView tvStudEmail = (TextView) convertView.findViewById(R.id.tvStudEmail);
TextView tvStudPhone = (TextView) convertView.findViewById(R.id.tvStudPhone);
TextView tvStudAddress = (TextView) convertView.findViewById(R.id.tvStudAddress);
tvStudEmail.setText(student.getEmail());
tvStudPhone.setText(student.getPhone());
tvStudAddress.setText(student.getAddress());
return convertView;
}
}
You can filter out rows that contain a NULL value in a specific column:
SELECT col1, col2, ..., coln
FROM yourtable
WHERE somecolumn IS NOT NULL
If you want to filter out rows that contain a null in any column then try this:
SELECT col1, col2, ..., coln
FROM yourtable
WHERE col1 IS NOT NULL
AND col2 IS NOT NULL
-- ...
AND coln IS NOT NULL
Update: Based on your comments, perhaps you want this?
SELECT * FROM
(
SELECT col1 AS col FROM yourtable
UNION
SELECT col2 AS col FROM yourtable
UNION
-- ...
UNION
SELECT coln AS col FROM yourtable
) T1
WHERE col IS NOT NULL
And I agre with Martin that if you need to do this then you should probably change your database design.
go to you build.gradle (app level)
and replace the word "compile" by "implementation"
it will work 100%
I've faced same problem with my registry then i tried the solution listed below from a blog page. It works.
You can list your catalogs by calling this url:
http://YourPrivateRegistyIP:5000/v2/_catalog
Response will be in the following format:
{
"repositories": [
<name>,
...
]
}
You can list tags of your catalog by calling this url:
http://YourPrivateRegistyIP:5000/v2/<name>/tags/list
Response will be in the following format:
{
"name": <name>,
"tags": [
<tag>,
...
]
}
You can run this command in docker registry container:
curl -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET http://localhost:5000/v2/<name>/manifests/<tag> 2>&1 | grep Docker-Content-Digest | awk '{print ($3)}'
Response will be in the following format:
sha256:6de813fb93debd551ea6781e90b02f1f93efab9d882a6cd06bbd96a07188b073
Run the command given below with manifest value:
curl -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X DELETE http://127.0.0.1:5000/v2/<name>/manifests/sha256:6de813fb93debd551ea6781e90b02f1f93efab9d882a6cd06bbd96a07188b073
Run this command in your docker registy container:
bin/registry garbage-collect /etc/docker/registry/config.yml
Here is my config.yml
root@c695814325f4:/etc# cat /etc/docker/registry/config.yml
version: 0.1
log:
fields:
service: registry
storage:
cache:
blobdescriptor: inmemory
filesystem:
rootdirectory: /var/lib/registry
delete:
enabled: true
http:
addr: :5000
headers:
X-Content-Type-Options: [nosniff]
health:
storagedriver:
enabled: true
interval: 10s
threshold: 3
The way you declare the date property as an input looks incorrect but its hard to say if it's the only problem without seeing all your code. Rather than using @Input('date')
declare the date property like so: private _date: string;
. Also, make sure you are instantiating the model with the new
keyword. Lastly, access the property using regular dot notation.
Check your work against this example from https://www.typescriptlang.org/docs/handbook/classes.html :
let passcode = "secret passcode";
class Employee {
private _fullName: string;
get fullName(): string {
return this._fullName;
}
set fullName(newName: string) {
if (passcode && passcode == "secret passcode") {
this._fullName = newName;
}
else {
console.log("Error: Unauthorized update of employee!");
}
}
}
let employee = new Employee();
employee.fullName = "Bob Smith";
if (employee.fullName) {
console.log(employee.fullName);
}
And here is a plunker demonstrating what it sounds like you're trying to do: https://plnkr.co/edit/OUoD5J1lfO6bIeME9N0F?p=preview
@article = user.articles.build(:title => "MainTitle")
@article.save
i Just enabled TCP/IP,VIA,Named Pipes in Sql Server Configuration manager , My problem got solved refer this for more info Resolving Named Pipes Error 40
Your mistake is looking for range
, which gives you the range
of a vector, for example:
range(c(10, -5, 100))
gives
-5 100
Instead, look at the :
operator to give sequences (with a step size of one):
1:100
or you can use the seq
function to have a bit more control. For example,
##Step size of 2
seq(1, 100, by=2)
or
##length.out: desired length of the sequence
seq(1, 100, length.out=5)
If your submodule was added in a branch be sure to include it in your clone command...
git clone -b <branch_name> --recursive <remote> <directory>
This is the best help that I found:
https://atom.io/packages/atom-beautify
This package can be installed in Atom and then CTRL+ALT+B solve the problem.
I did use the ideas provided here and faced some problems. I fixed them all and have a smooth one-liner I'd like to share.
$('#row_to_slideup').find('> td').css({'height':'0px'}).wrapInner('<div style=\"display:block;\" />').parent().find('td > div').slideUp('slow', function() {$(this).parent().parent().remove();});
It uses css on the td element. It reduces the height to 0px. That way only the height of the content of the newly created div-wrapper inside of each td element matters.
The slideUp is on slow. If you make it even slower you might realize some glitch. A small jump at the beginning. This is because of the mentioned css setting. But without those settings the row would not decrease in height. Only its content would.
At the end the tr element gets removed.
The whole line only contains JQuery and no native Javascript.
Hope it helps.
Here is an example code:
<html>
<head>
<script src="https://code.jquery.com/jquery-3.2.0.min.js"> </script>
</head>
<body>
<table>
<thead>
<tr>
<th>header_column 1</th>
<th>header column 2</th>
</tr>
</thead>
<tbody>
<tr id="row1"><td>row 1 left</td><td>row 1 right</td></tr>
<tr id="row2"><td>row 2 left</td><td>row 2 right</td></tr>
<tr id="row3"><td>row 3 left</td><td>row 3 right</td></tr>
<tr id="row4"><td>row 4 left</td><td>row 4 right</td></tr>
</tbody>
</table>
<script>
setTimeout(function() {
$('#row2').find('> td').css({'height':'0px'}).wrapInner('<div style=\"display:block;\" />').parent().find('td > div').slideUp('slow', function() {$(this).parent().parent().remove();});
}, 2000);
</script>
</body>
</html>
//ECHO MONTHS BETWEEN TWO TIMESTAMPS
$my_earliest_timestamp = 1532095200;
$my_latest_timestamp = 1554991200;
echo '<pre>';
echo "Earliest timestamp: ". date('c',$my_earliest_timestamp) ."\r\n";
echo "Latest timestamp: " .date('c',$my_latest_timestamp) ."\r\n\r\n";
echo "Month start of earliest timestamp: ". date('c',strtotime('first day of '. date('F Y',$my_earliest_timestamp))) ."\r\n";
echo "Month start of latest timestamp: " .date('c',strtotime('first day of '. date('F Y',$my_latest_timestamp))) ."\r\n\r\n";
echo "Month end of earliest timestamp: ". date('c',strtotime('last day of '. date('F Y',$my_earliest_timestamp)) + 86399) ."\r\n";
echo "Month end of latest timestamp: " .date('c',strtotime('last day of '. date('F Y',$my_latest_timestamp)) + 86399) ."\r\n\r\n";
$sMonth = strtotime('first day of '. date('F Y',$my_earliest_timestamp));
$eMonth = strtotime('last day of '. date('F Y',$my_earliest_timestamp)) + 86399;
$xMonth = strtotime('+1 month', strtotime('first day of '. date('F Y',$my_latest_timestamp)));
while ($eMonth < $xMonth) {
echo "Things from ". date('Y-m-d',$sMonth) ." to ". date('Y-m-d',$eMonth) ."\r\n\r\n";
$sMonth = $eMonth + 1; //add 1 second to bring forward last date into first second of next month.
$eMonth = strtotime('last day of '. date('F Y',$sMonth)) + 86399;
}
var d = new Date("2013/01/01");_x000D_
console.log(d.toLocaleDateString());_x000D_
d.setMonth(d.getMonth() + 18);_x000D_
console.log(d.toLocaleDateString());
_x000D_
How about calling the .NET Framework methods?
You can do ANYTHING with them... :
[System.IO.File]::Copy($src, $dest, $true);
The $true
argument makes it overwrite.
You need to append form
itself to body
too:
$form = $("<form></form>");
$form.append('<input type="button" value="button">');
$('body').append($form);
Here it is some code:
var configuration = WebConfigurationManager.OpenWebConfiguration("~");
var section = (ConnectionStringsSection)configuration.GetSection("connectionStrings");
section.ConnectionStrings["MyConnectionString"].ConnectionString = "Data Source=...";
configuration.Save();
See more examples in this article, you may need to take a look to impersonation.
You could try a subquery:
SELECT DISTINCT TEST.* FROM (
SELECT rsc.RadioServiceCodeId,
rsc.RadioServiceCode + ' - ' + rsc.RadioService as RadioService
FROM sbi_l_radioservicecodes rsc
INNER JOIN sbi_l_radioservicecodegroups rscg ON rsc.radioservicecodeid = rscg.radioservicecodeid
WHERE rscg.radioservicegroupid IN
(select val from dbo.fnParseArray(@RadioServiceGroup,','))
OR @RadioServiceGroup IS NULL
ORDER BY rsc.RadioServiceCode,rsc.RadioServiceCodeId,rsc.RadioService
) as TEST
Rollback one step. Natively.
php artisan migrate:rollback --step=1
And here's the manual page: docs.
No way to do without some hassle. For details, check Martin Bean's answer.
One of the advantages that stems from Static factory is that that API can return objects without making their classes public. This lead to very compact API. In java this is achieved by Collections class which hides around 32 classes which makes it collection API very compact.
HashMaps don't allow access by position, it only knows about the hash code and and it can retrieve the value if it can calculate the hash code of the key. TreeMaps have a notion of ordering. Linkedhas maps preserve the order in which they entered the map.
if you write while(true). its means that loop will not stop in any situation for stop this loop you have to use break statement between while block.
package com.java.demo;
/**
* @author Ankit Sood Apr 20, 2017
*/
public class Demo {
/**
* The main method.
*
* @param args
* the arguments
*/
public static void main(String[] args) {
/* Initialize while loop */
while (true) {
/*
* You have to declare some condition to stop while loop
* In which situation or condition you want to terminate while loop.
* conditions like: if(condition){break}, if(var==10){break} etc...
*/
/* break keyword is for stop while loop */
break;
}
}
}
After change bit of code @apinho In swift 4.3 working fine
extension UIView {
func roundCornersWithLayerMask(cornerRadii: CGFloat, corners: UIRectCorner) {
let path = UIBezierPath(roundedRect: bounds,
byRoundingCorners: corners,
cornerRadii: CGSize(width: cornerRadii, height: cornerRadii))
let maskLayer = CAShapeLayer()
maskLayer.path = path.cgPath
layer.mask = maskLayer
}
}
To use this function for you view
YourViewName. roundCornersWithLayerMask(cornerRadii: 20,corners: [.topLeft,.topRight])
I want to understand the lock each transaction isolation takes on the table
For example, you have 3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT
statement to read data. C reads and updates data. All these process work on the same table T.
WHERE aField > 10 AND aField < 20
, A inserts data where aField
value is between 10 and 20, then B reads the data again and get a different result.I want to understand where we define these isolation levels: only at JDBC/hibernate level or in DB also
Using JDBC, you define it using Connection#setTransactionIsolation
.
Using Hibernate:
<property name="hibernate.connection.isolation">2</property>
Where
Hibernate configuration is taken from here (sorry, it's in Spanish).
By the way, you can set the isolation level on RDBMS as well:
SET ISOLATION TO DIRTY READ
sentence.)and on and on...
A good reason is for security - this can prevent CSRF attacks because this header cannot be added to the AJAX request cross domain without the consent of the server via CORS.
Only the following headers are allowed cross domain:
- Accept
- Accept-Language
- Content-Language
- Last-Event-ID
- Content-Type
any others cause a "pre-flight" request to be issued in CORS supported browsers.
Without CORS it is not possible to add X-Requested-With
to a cross domain XHR request.
If the server is checking that this header is present, it knows that the request didn't initiate from an attacker's domain attempting to make a request on behalf of the user with JavaScript. This also checks that the request wasn't POSTed from a regular HTML form, of which it is harder to verify it is not cross domain without the use of tokens. (However, checking the Origin
header could be an option in supported browsers, although you will leave old browsers vulnerable.)
You may wish to combine this with a token, because Flash running on Safari on OSX can set this header if there's a redirect step. It appears it also worked on Chrome, but is now remediated. More details here including different versions affected.
OWASP Recommend combining this with an Origin and Referer check:
This defense technique is specifically discussed in section 4.3 of Robust Defenses for Cross-Site Request Forgery. However, bypasses of this defense using Flash were documented as early as 2008 and again as recently as 2015 by Mathias Karlsson to exploit a CSRF flaw in Vimeo. But, we believe that the Flash attack can't spoof the Origin or Referer headers so by checking both of them we believe this combination of checks should prevent Flash bypass CSRF attacks. (NOTE: If anyone can confirm or refute this belief, please let us know so we can update this article)
However, for the reasons already discussed checking Origin can be tricky.
Written a more in depth blog post on CORS, CSRF and X-Requested-With here.
You can get this using Emulation (Ctrl + 8) Document mode (10,9,8,7,5), Browser Profile (Desktop, Windows Phone)
onkeypress = > preventdefault ...
No need for two cron entries, you can put it into one with:
* * * * * /bin/bash -l -c "/path/to/executable; sleep 30 ; /path/to/executable"
so in your case:
* * * * * /bin/bash -l -c "cd /srv/last_song/releases/20120308133159 && script/rails runner -e production '\''Song.insert_latest'\'' ; sleep 30 ; cd /srv/last_song/releases/20120308133159 && script/rails runner -e production '\''Song.insert_latest'\''"
In the latest mongoose (3.8.1 at the time of writing), you do two things differently: (1) you have to pass single argument to sort(), which must be an array of constraints or just one constraint, and (2) execFind() is gone, and replaced with exec() instead. Therefore, with the mongoose 3.8.1 you'd do this:
var q = models.Post.find({published: true}).sort({'date': -1}).limit(20);
q.exec(function(err, posts) {
// `posts` will be of length 20
});
or you can chain it together simply like that:
models.Post
.find({published: true})
.sort({'date': -1})
.limit(20)
.exec(function(err, posts) {
// `posts` will be of length 20
});
According to the documentation of the PropertyFile
task, you can append the generated properties to an existing file. You could have a properties file with just the comment line, and have the Ant task append the generated properties.
I think the jQuery plugin freezeframe.js might come in handy for you. freezeframe.js is a jQuery Plugin To Automatically Pause GIFs And Restart Animating On Mouse Hover.
I guess you can easily adapt it to make it work on page load instead.
If you look in the source code of the JDK, you can see that for unix systems the property is read at compile time from the paths.h or hard coded. For windows the function GetTempPathW
from win32 returns the tmpdir
name.
For posix systems you might expect the standard TMPDIR
to work, but that is not the case. You can confirm that TMPDIR
is not used by running TMPDIR=/mytmp java -XshowSettings
You can use the -p
parameter, which is documented as:
-p, --parents
no error if existing, make parent directories as needed
So:
mkdir -p "$BACKUP_DIR/$client/$year/$month/$day"
Using Google's guava library
String[] firstArray = {"test1","","test2","test4","",null};
Iterable<String> st=Iterables.filter(Arrays.asList(firstArray),new Predicate<String>() {
@Override
public boolean apply(String arg0) {
if(arg0==null) //avoid null strings
return false;
if(arg0.length()==0) //avoid empty strings
return false;
return true; // else true
}
});
The appref-ms file does not point to the exe. When you hit that shortcut, it invokes the deployment manifest at the deployment provider url and checks for updates. It checks the application manifest (yourapp.exe.manifest) to see what files to download, and this file contains the definition of the entry point (i.e. the exe).
Let's take a look at the stock hashCode() method:
public int hashCode() {
int h = hash;
if (h == 0 && count > 0) {
for (int i = 0; i < count; i++) {
h = 31 * h + charAt(i);
}
hash = h;
}
return h;
}
The block of code above comes from the java.lang.String class. As you can see it is a 32 bit hash code which fair enough if you are using it on a small scale of data. If you are looking for hash code with more than 32 bit, you might wanna checkout this link: http://www.javamex.com/tutorials/collections/strong_hash_code_implementation.shtml
You could just write to the file as you would write any normal file.
with open('csvfile.csv','wb') as file:
for l in text:
file.write(l)
file.write('\n')
If just in case, it is a list of lists, you could directly use built-in csv
module
import csv
with open("csvfile.csv", "wb") as file:
writer = csv.writer(file)
writer.writerows(text)
The @Url.Action()
method is proccess on the server-side
, so you cannot pass a client-side
value to this function as a parameter. You can concat the client-side
variables with the server-side
url generated by this method, which is a string on the output. Try something like this:
var firstname = "abc";
var username = "abcd";
location.href = '@Url.Action("Display", "Customer")?uname=' + firstname + '&name=' + username;
The @Url.Action("Display", "Customer")
is processed on the server-side
and the rest of the string is processed on the client-side
, concatenating the result of the server-side
method with the client-side
.
Check target-membership of PrimeNumberModel.swift in your testing target.
You should do it in the xaml code:
<DataGrid ItemsSource="{Binding list}" [...]>
[...]
</DataGrid>
I would advise you to use an ObservableCollection
as your backing collection, as that would propagate changes to the datagrid, as it implements INotifyCollectionChanged
.
You can use hash.keys.include?(key)
irb(main):001:0> hash = {"pot" => 1, "tot" => 2, "not" => 3}
=> {"pot"=>1, "tot"=>2, "not"=>3}
irb(main):002:0> key = "not"
=> "not"
irb(main):003:0> hash.keys.include?(key)
=> true
With Python 2, this doesn't work for non-English words in UTF-8. In this case decode('utf-8')
can help:
>>> s='????????'
>>> print s.lower()
????????
>>> print s.decode('utf-8').lower()
????????
Plot the statistical autocorrelation given a pandas datatime Series of returns:
import matplotlib.pyplot as plt
def plot_autocorr(returns, lags):
autocorrelation = []
for lag in range(lags+1):
corr_lag = returns.corr(returns.shift(-lag))
autocorrelation.append(corr_lag)
plt.plot(range(lags+1), autocorrelation, '--o')
plt.xticks(range(lags+1))
return np.array(autocorrelation)
Two references refer to same object as long as there is no reassignment.
Any updates in the same object won't make the references to new memory since it still is in same memory. Here are few examples :
a = "first string"
b = a
b.upcase!
=> FIRST STRING
a
=> FIRST STRING
b = "second string"
a
=> FIRST STRING
hash = {first_sub_hash: {first_key: "first_value"}}
first_sub_hash = hash[:first_sub_hash]
first_sub_hash[:second_key] = "second_value"
hash
=> {first_sub_hash: {first_key: "first_value", second_key: "second_value"}}
def change(first_sub_hash)
first_sub_hash[:third_key] = "third_value"
end
change(first_sub_hash)
hash
=> {first_sub_hash: {first_key: "first_value", second_key: "second_value", third_key: "third_value"}}
Two possible approaches.
If you have a foreign key, declare it as on-delete-cascade and delete the parent rows older than 30 days. All the child rows will be deleted automatically.
Based on your description, it looks like you know the parent rows that you want to delete and need to delete the corresponding child rows. Have you tried SQL like this?
delete from child_table
where parent_id in (
select parent_id from parent_table
where updd_tms != (sysdate-30)
-- now delete the parent table records
delete from parent_table
where updd_tms != (sysdate-30);
---- Based on your requirement, it looks like you might have to use PL/SQL. I'll see if someone can post a pure SQL solution to this (in which case that would definitely be the way to go).
declare
v_sqlcode number;
PRAGMA EXCEPTION_INIT(foreign_key_violated, -02291);
begin
for v_rec in (select parent_id, child id from child_table
where updd_tms != (sysdate-30) ) loop
-- delete the children
delete from child_table where child_id = v_rec.child_id;
-- delete the parent. If we get foreign key violation,
-- stop this step and continue the loop
begin
delete from parent_table
where parent_id = v_rec.parent_id;
exception
when foreign_key_violated
then null;
end;
end loop;
end;
/
Have you tried Refinements?
module Nothingness
refine String do
alias_method :nothing?, :empty?
end
refine NilClass do
alias_method :nothing?, :nil?
end
end
using Nothingness
return my_string.nothing?
This error can occur for lots of reasons, and the last time, I solved it by modifying the Reference.svcmap
file, and changing how the WSDL file is referenced.
Throwing exception:
<MetadataSource Address="C:\Users\Me\Repo\Service.wsdl" Protocol="file" SourceId="1" />
<MetadataFile FileName="Service.wsdl" ... SourceUrl="file:///C:/Users/Me/Repo/Service.wsdl" />
Working fine:
<MetadataSource Address="https://server.domain/path/Service.wsdl" Protocol="http" SourceId="1" />
<MetadataFile FileName="Service.wsdl" ... SourceUrl="https://server.domain/path/Service.wsdl" />
This seems weird, but I have reproduced it. This was in a console application on .NET 4.5 and 4.7, as well as a .NET WebAPI site on 4.7.
No one seemed to provide any examples of doing this solely using an adapter, so I thought I would post my code snippet for displaying ListViews where the "curSelected" item has a different background:
final ListView lv = (ListView)findViewById(R.id.lv);
lv.setAdapter(new BaseAdapter()
{
public View getView(int position, View convertView, ViewGroup parent)
{
if (convertView == null)
{
convertView = new TextView(ListHighlightTestActivity.this);
convertView.setPadding(10, 10, 10, 10);
((TextView)convertView).setTextColor(Color.WHITE);
}
convertView.setBackgroundColor((position == curSelected) ?
Color.argb(0x80, 0x20, 0xa0, 0x40) : Color.argb(0, 0, 0, 0));
((TextView)convertView).setText((String)getItem(position));
return convertView;
}
public long getItemId(int position)
{
return position;
}
public Object getItem(int position)
{
return "item " + position;
}
public int getCount()
{
return 20;
}
});
This has always been a helpful approach for me for when appearance of list items needs to change dynamically.
Setting position: absolute
and then transform: rotate(45deg)
will provide a background:
div {_x000D_
height: 200px;_x000D_
width: 200px;_x000D_
outline: 2px dashed slateBlue;_x000D_
overflow: hidden;_x000D_
}_x000D_
div img {_x000D_
position: absolute;_x000D_
transform: rotate(45deg);_x000D_
z-index: -1;_x000D_
top: 40px;_x000D_
left: 40px;_x000D_
}
_x000D_
<div>_x000D_
<img src="https://placekitten.com/120/120" />_x000D_
<h1>Hello World!</h1>_x000D_
</div>
_x000D_
In my case, the image size is not so large that I cannot have a rotated copy of it. So, the image has been rotated with photoshop
. An alternative to photoshop
for rotating images is online tool too for rotating images. Once rotated, I'm working with the rotated-image
in the background
property.
div.with-background {
background-image: url(/img/rotated-image.png);
background-size: contain;
background-repeat: no-repeat;
background-position: top center;
}
Good Luck...
Steps to get this error ;
Solution : rm -rf "name of repo folder which in out case is xyz" . So
rm -rf xyz
var date = new Date((1578316263249));//data[k].timestamp_x000D_
console.log(date);
_x000D_
saveLeaves(vec,msh);
I'm assuming takes the msh
pointer and puts it inside of vec
. Since msh
is just a pointer to the memory, if you delete it, it will also get deleted inside of the vector.
Edit: See Jayprakash Dubey's answer for iTunes 12.7
From the menu shown in the following screenshot, choose Apps. You can drag and drop you IPA file in the next view.
After that, go to your device's page, you'll see the list of apps, install your app and press Apply from the bottom bar.
Here's what worked for me:
console.log(process.mainModule.filename);
let's say on the command-line you have:
C:\> C:\Documents and Settings\fred\My Documents\Downloads\google-python-exercises
\google-python-exercises\hello.py John
to make it easier to read, let's just shorten this to:
C:\> hello.py John
argv
represents all the items that come along via the command-line input, but counting starts at zero (0) not one (1): in this case, "hello.py
" is element 0, "John
" is element 1
in other words, sys.argv[0] == 'hello.py'
and sys.argv[1] == 'John'
... but look, how many elements is this? 2, right! so even though the numbers are 0 and 1, there are 2 elements here.
len(sys.argv) >= 2
just checks whether you entered at least two elements. in this case, we entered exactly 2.
now let's translate your code into English:
define main() function:
if there are at least 2 elements on the cmd-line:
set 'name' to the second element located at index 1, e.g., John
otherwise there is only 1 element... the program name, e.g., hello.py:
set 'name' to "World" (since we did not get any useful user input)
display 'Hello' followed by whatever i assigned to 'name'
so what does this mean? it means that if you enter:
hello.py
", the code outputs "Hello World
" because you didn't give a namehello.py John
", the code outputs "Hello John
" because you didhello.py John Paul
", the code still outputs "Hello John
" because it does not save nor use sys.argv[2]
, which was "Paul
" -- can you see in this case that len(sys.argv) == 3
because there are 3 elements in the sys.argv
list?This does work for me. In below example, Alpha range can be a value between 0 to 255. Previously, I made a mistake by thinking that it must be a value of percentage.
Dim x as integer = 230
Panel1.BackColor = Color.FromArgb(x, Color.Blue)
Use date format
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = format.parse(datetime);
SimpleDateFormat df = new SimpleDateFormat("yyyy");
year = df.format(date);
The following class might come quite handy:
struct Error : std::exception
{
char text[1000];
Error(char const* fmt, ...) __attribute__((format(printf,2,3))) {
va_list ap;
va_start(ap, fmt);
vsnprintf(text, sizeof text, fmt, ap);
va_end(ap);
}
char const* what() const throw() { return text; }
};
Usage example:
throw Error("Could not load config file '%s'", configfile.c_str());
Go to Phone Settings --> Developer Options --> Simulate Secondary Displays
and turn it to None
.
If you don't see Developer Options
in the settings menu
(it should be at the bottom, go Settings ==> About phone
and tap on the Build number
a lot of times)
Only Objective-C is allowed by now... but since a few months ago you are allowed to write scripts that will be interpreted in your application.
So you may be able to write a LUA interpreter or a Python interpreter, then write some part of your application in this scripting language. If you want your application accepted on the App Store, these scripts have to be bundled with the application (your application cannot download it from the Internet for example)
Serialize and Deserialize (XML/JSON):
public static T XmlDeserialize<T>(this string toDeserialize)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
using(StringReader textReader = new StringReader(toDeserialize))
{
return (T)xmlSerializer.Deserialize(textReader);
}
}
public static string XmlSerialize<T>(this T toSerialize)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
using(StringWriter textWriter = new StringWriter())
{
xmlSerializer.Serialize(textWriter, toSerialize);
return textWriter.ToString();
}
}
public static T JsonDeserialize<T>(this string toDeserialize)
{
return JsonConvert.DeserializeObject<T>(toDeserialize);
}
public static string JsonSerialize<T>(this T toSerialize)
{
return JsonConvert.SerializeObject(toSerialize);
}
Based on quick inspection of google web, this would be CSS path to links in page list
ol[id="rso"] h3[class="r"] a
So you should do something like
String path = "ol[id='rso'] h3[class='r'] a";
driver.findElements(By.cssSelector(path)).get(2).click();
However you could also use xpath
which is not really recommended as a best practice and also JQuery locators but I am not sure if you can use them aynywhere else except inArquillian Graphene
--create a user that you want to use the database as:
create role neil;
--create the user for the web server to connect as:
create role webgui noinherit login password 's3cr3t';
--let webgui set role to neil:
grant neil to webgui; --this looks backwards but is correct.
webgui
is now in the neil
group, so webgui
can call set role neil
. However, webgui
did not inherit neil
's permissions.
Later, login as webgui:
psql -d some_database -U webgui
(enter s3cr3t as password)
set role neil;
webgui
does not need superuser
permission for this.
You want to set role
at the beginning of a database session and reset it at the end of the session. In a web app, this corresponds to getting a connection from your database connection pool and releasing it, respectively. Here's an example using Tomcat's connection pool and Spring Security:
public class SetRoleJdbcInterceptor extends JdbcInterceptor {
@Override
public void reset(ConnectionPool connectionPool, PooledConnection pooledConnection) {
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
if(authentication != null) {
try {
/*
use OWASP's ESAPI to encode the username to avoid SQL Injection. Can't use parameters with SET ROLE. Need to write PG codec.
Or use a whitelist-map approach
*/
String username = ESAPI.encoder().encodeForSQL(MY_CODEC, authentication.getName());
Statement statement = pooledConnection.getConnection().createStatement();
statement.execute("set role \"" + username + "\"");
statement.close();
} catch(SQLException exp){
throw new RuntimeException(exp);
}
}
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if("close".equals(method.getName())){
Statement statement = ((Connection)proxy).createStatement();
statement.execute("reset role");
statement.close();
}
return super.invoke(proxy, method, args);
}
}
On Windows you can query the precise state of any port on any network-adapter using: GetExtendedTcpTable
You can filter it to only those related to your process, etc and do as you wish periodically monitoring as needed. This is "an alternative" approach.
You could also duplicate the socket handle and set up an IOCP/Overlapped i/o wait on the socket and monitor it that way as well.
I got the same error of license not accepted...trying to set up android environment to run a React-native app in android emulator for API level 23.
I did the following:
Based on the link https://developer.android.com/studio/intro/update#download-with-gradle
Verified if the license got downloaded via the Android studio 3.1.3's SDK manager.
Set up ANDROID_HOME as C:\\Android\Sdk
(it was installed in C:\Users\username\AppData\Local\Android\Sdk)
The error got resolved after retrying the build in a new command prompt.
Or you can declare a struct type, that contains a character arry(1 string), them create an array of the structs and thus a multi-element array
typedef struct name
{
char name[100]; // 100 character array
}name;
main()
{
name yourString[10]; // 10 strings
printf("Enter something\n:);
scanf("%s",yourString[0].name);
scanf("%s",yourString[1].name);
// maybe put a for loop and a few print ststements to simplify code
// this is just for example
}
One of the advantages of this over any other method is that this allows you to scan directly into the string without having to use strcpy
;
check this out, works on firefox and IE
<style>
html, body
{
height: 100%;
}
.content
{
min-height: 100%;
}
.footer
{
position: relative;
clear: both;
}
</style>
<body>
<div class="content">Page content
</div>
<div class="footer">this is my footer
</div>
</body>
For Jenkins 2.190.1 this works for sure:
post {
always {
cleanWs deleteDirs: true, notFailBuild: true
}
}
If you already have filled columns and have added new one or you want to fill out old column with new mock values , do this:
public function up()
{
DB::table('foydabars')->update(
array(
'status' => '0'
)
);
}
Translate composed UInt32 color Value
to CSS in .NET
I know the question applies to 3 input values (red
green
blue
). But there may be the situation where you already have a composed 32bit Value
. It looks like you want to send the data to some HTML CSS renderer (because of the #HEX format). Actually CSS wants you to print 6 or at least 3 zero filled hex digits here. so #{0:X06}
or #{0:X03}
would be required. Due to some strange behaviour, this always prints 8 digits instead of 6.
Solve this by:
String.Format("#{0:X02}{1:X02}{2:X02}", (Value & 0x00FF0000) >> 16, (Value & 0x0000FF00) >> 8, (Value & 0x000000FF) >> 0)
You don't necessarily have to choose between the two paradigms. You can write software with an OO architecture using many functional concepts. FP and OOP are orthogonal in nature.
Take for example C#. You could say it's mostly OOP, but there are many FP concepts and constructs. If you consider Linq, the most important constructs that permit Linq to exist are functional in nature: lambda expressions.
Another example, F#. You could say it's mostly FP, but there are many OOP concepts and constructs available. You can define classes, abstract classes, interfaces, deal with inheritance. You can even use mutability when it makes your code clearer or when it dramatically increases performance.
Many modern languages are multi-paradigm.
As I'm in the same boat (OOP background, learning FP), I'd suggest you some readings I've really appreciated:
Functional Programming for Everyday .NET Development, by Jeremy Miller. A great article (although poorly formatted) showing many techniques and practical, real-world examples of FP on C#.
Real-World Functional Programming, by Tomas Petricek. A great book that deals mainly with FP concepts, trying to explain what they are, when they should be used. There are many examples in both F# and C#. Also, Petricek's blog is a great source of information.
as soon as the user presses the key in question you can store a reference to that even and use it on any HTML other element:
EnterKeyPressToEmulate<input class="lineEditInput" id="addr333_1" type="text" style="width:60%;right:0%;float:right" onkeydown="keyPressRecorder(event)"></input>_x000D_
TypeHereToEmulateKeyPress<input class="lineEditInput" id="addr333_2" type="text" style="width:60%;right:0%;float:right" onkeydown="triggerKeyPressOnNextSiblingFromWithinKeyPress(event)">_x000D_
Itappears Here Too<input class="lineEditInput" id="addr333_3" type="text" style="width:60%;right:0%;float:right;" onkeydown="keyPressHandler(event)">_x000D_
<script>_x000D_
var gZeroEvent;_x000D_
function keyPressRecorder(e)_x000D_
{_x000D_
gZeroEvent = e;_x000D_
}_x000D_
function triggerKeyPressOnNextSiblingFromWithinKeyPress(TTT)_x000D_
{_x000D_
if(typeof(gZeroEvent) != 'undefined') {_x000D_
TTT.currentTarget.nextElementSibling.dispatchEvent(gZeroEvent);_x000D_
keyPressHandler(TTT);_x000D_
}_x000D_
}_x000D_
function keyPressHandler(TTT)_x000D_
{_x000D_
if(typeof(gZeroEvent) != 'undefined') {_x000D_
TTT.currentTarget.value+= gZeroEvent.key;_x000D_
event.preventDefault();_x000D_
event.stopPropagation();_x000D_
}_x000D_
}_x000D_
</script>
_x000D_
you can set the keyCode if you create your own event, you can copy existing parameters from any real keyboard event (ignoring targets since its the job of dispatchEvent) and :
ta = new KeyboardEvent('keypress',{ctrlKey:true,key:'Escape'})
0755
= User:rwx
Group:r-x
World:r-x
0750
= User:rwx
Group:r-x
World:---
(i.e. World: no access)
r = read
w = write
x = execute (traverse for directories)
The error pretty much explains what the problem is: you are trying to include a file that is not there.
Try to use the full path to the file, using realpath()
, and use dirname(__FILE__)
to get your current directory:
require_once(realpath(dirname(__FILE__) . '/../includes/dbconn.inc'));
Use stream to write content to webrequest
string data = "username=<value>&password=<value>"; //replace <value>
byte[] dataStream = Encoding.UTF8.GetBytes(data);
private string urlPath = "http://xxx.xxx.xxx/manager/";
string request = urlPath + "index.php/org/get_org_form";
WebRequest webRequest = WebRequest.Create(request);
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ContentLength = dataStream.Length;
Stream newStream=webRequest.GetRequestStream();
// Send the data.
newStream.Write(dataStream,0,dataStream.Length);
newStream.Close();
WebResponse webResponse = webRequest.GetResponse();
<?php
session_start();
$message1 = "A message";
$message2 = "Another message";
$_SESSION['firstMessage'] = $message1;
$_SESSION['secondMessage'] = $message2;
?>
Stores the sessions on page 1 then on page 2 do
<?php
session_start();
echo $_SESSION['firstMessage'];
echo $_SESSION['secondMessage'];
?>