try/catch is scripted syntax. So any time you are using declarative syntax to use something from scripted in general you can do so by enclosing the scripted syntax in the scripts block in a declarative pipeline. So your try/catch should go inside stage >steps >script.
This holds true for any other scripted pipeline syntax you would like to use in a declarative pipeline as well.
On smaller screen's like laptop the dialog will shrink. To auto-fix, try the following option
Additional Reading https://material.angular.io/cdk/layout/overview
Thanks to the solution in answersicouldntfindanywhereelse (2nd para). it worked for me.
Following is needed
import { Breakpoints, BreakpointObserver } from '@angular/cdk/layout'
https://github.com/axios/axios#cancellation
const CancelToken = axios.CancelToken;
const source = CancelToken.source();
let url = 'www.url.com'
axios.get(url, {
progress: false,
cancelToken: source.token
})
.then(resp => {
alert('done')
})
setTimeout(() => {
source.cancel('Operation canceled by the user.');
},'1000')
partial interface Navigator { readonly attribute boolean webdriver; };
The webdriver IDL attribute of the Navigator interface must return the value of the webdriver-active flag, which is initially false.
This property allows websites to determine that the user agent is under control by WebDriver, and can be used to help mitigate denial-of-service attacks.
Taken directly from the 2017 W3C Editor's Draft of WebDriver. This heavily implies that at the very least, future iterations of selenium's drivers will be identifiable to prevent misuse. Ultimately, it's hard to tell without the source code, what exactly causes chrome driver in specific to be detectable.
I know this is not an answer, but I'd like to contribute to this matter for what it's worth. It would be great if they could release justify-self
for flexbox to make it truly flexible.
It's my belief that when there are multiple items on the axis, the most logical way for justify-self
to behave is to align itself to its nearest neighbours (or edge) as demonstrated below.
I truly hope, W3C takes notice of this and will at least consider it. =)
This way you can have an item that is truly centered regardless of the size of the left and right box. When one of the boxes reaches the point of the center box it will simply push it until there is no more space to distribute.
The ease of making awesome layouts are endless, take a look at this "complex" example.
Neither <iostream>
nor <iostream.h>
are standard C header files. Your code is meant to be C++, where <iostream>
is a valid header. Use g++
(and a .cpp
file extension) for C++ code.
Alternatively, this program uses mostly constructs that are available in C anyway. It's easy enough to convert the entire program to compile using a C compiler. Simply remove #include <iostream>
and using namespace std;
, and replace cout << endl;
with putchar('\n');
... I advise compiling using C99 (eg. gcc -std=c99
)
You shouldn't be closing the serial port in Python between writing and reading. There is a chance that the port is still closed when the Arduino responds, in which case the data will be lost.
while running:
# Serial write section
setTempCar1 = 63
setTempCar2 = 37
setTemp1 = str(setTempCar1)
setTemp2 = str(setTempCar2)
print ("Python value sent: ")
print (setTemp1)
ard.write(setTemp1)
time.sleep(6) # with the port open, the response will be buffered
# so wait a bit longer for response here
# Serial read section
msg = ard.read(ard.inWaiting()) # read everything in the input buffer
print ("Message from arduino: ")
print (msg)
The Python Serial.read
function only returns a single byte by default, so you need to either call it in a loop or wait for the data to be transmitted and then read the whole buffer.
On the Arduino side, you should consider what happens in your loop
function when no data is available.
void loop()
{
// serial read section
while (Serial.available()) // this will be skipped if no data present, leading to
// the code sitting in the delay function below
{
delay(30); //delay to allow buffer to fill
if (Serial.available() >0)
{
char c = Serial.read(); //gets one byte from serial buffer
readString += c; //makes the string readString
}
}
Instead, wait at the start of the loop
function until data arrives:
void loop()
{
while (!Serial.available()) {} // wait for data to arrive
// serial read section
while (Serial.available())
{
// continue as before
EDIT 2
Here's what I get when interfacing with your Arduino app from Python:
>>> import serial
>>> s = serial.Serial('/dev/tty.usbmodem1411', 9600, timeout=5)
>>> s.write('2')
1
>>> s.readline()
'Arduino received: 2\r\n'
So that seems to be working fine.
In testing your Python script, it seems the problem is that the Arduino resets when you open the serial port (at least my Uno does), so you need to wait a few seconds for it to start up. You are also only reading a single line for the response, so I've fixed that in the code below also:
#!/usr/bin/python
import serial
import syslog
import time
#The following line is for serial over GPIO
port = '/dev/tty.usbmodem1411' # note I'm using Mac OS-X
ard = serial.Serial(port,9600,timeout=5)
time.sleep(2) # wait for Arduino
i = 0
while (i < 4):
# Serial write section
setTempCar1 = 63
setTempCar2 = 37
ard.flush()
setTemp1 = str(setTempCar1)
setTemp2 = str(setTempCar2)
print ("Python value sent: ")
print (setTemp1)
ard.write(setTemp1)
time.sleep(1) # I shortened this to match the new value in your Arduino code
# Serial read section
msg = ard.read(ard.inWaiting()) # read all characters in buffer
print ("Message from arduino: ")
print (msg)
i = i + 1
else:
print "Exiting"
exit()
Here's the output of the above now:
$ python ardser.py
Python value sent:
63
Message from arduino:
Arduino received: 63
Arduino sends: 1
Python value sent:
63
Message from arduino:
Arduino received: 63
Arduino sends: 1
Python value sent:
63
Message from arduino:
Arduino received: 63
Arduino sends: 1
Python value sent:
63
Message from arduino:
Arduino received: 63
Arduino sends: 1
Exiting
To start redis with a config file all you need to do is specifiy the config file as an argument:
redis-server /root/config/redis.rb
Instead of using and killing PID's I would suggest creating an init script for your service
I would suggest taking a look at the Installing Redis more properly section of http://redis.io/topics/quickstart. It will walk you through setting up an init script with redis so you can just do something like service redis_server start
and service redis_server stop
to control your server.
I am not sure exactly what distro you are using, that article describes instructions for a Debian based distro. If you are are using a RHEL/Fedora distro let me know, I can provide you with instructions for the last couple of steps, the config file and most of the other steps will be the same.
Here is the BESTEST way to send emails using PHPmailer library, this is the only method that works for me.
require_once 'mailer/class.phpmailer.php';
$mail = new PHPMailer(); // create a new object
$mail->IsSMTP(); // enable SMTP
$mail->SMTPDebug = 1; // debugging: 1 = errors and messages, 2 = messages only
$mail->SMTPAuth = true; // authentication enabled
$mail->SMTPSecure = 'ssl'; // secure transfer enabled REQUIRED for GMail
$mail->Host = "smtp.gmail.com";
$mail->Port = 465; // or 587
$mail->IsHTML(true);
$mail->Username = "[email protected]";
$mail->Password = "xxxxxxx";
$mail->SetFrom("[email protected]");
$mail->AddAddress($to);
$logfile = dirname(dirname(__FILE__)) . '/mail.log';
try {
$mail->Body = $message;
$mail->Subject = $subject;
file_put_contents($logfile, "Content: \n", FILE_APPEND);
file_put_contents($logfile, $message . "\n\n", FILE_APPEND);
if(!$mail->Send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
} else {
echo "Email has been sent";
}
} catch (Exception $e) {
#print_r($e->getMessage());
file_put_contents($logfile, "Error: \n", FILE_APPEND);
file_put_contents($logfile, $e->getMessage() . "\n", FILE_APPEND);
file_put_contents($logfile, $e->getTraceAsString() . "\n\n", FILE_APPEND);
}
if you want to know a remote redis server's version, just connect to that server and issue command "info server", you will get things like this:
...
redis_version:3.2.12
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:9c3b73db5f7822b7
redis_mode:standalone
os:Linux 2.6.32.43-tlinux-1.0.26-default x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.9.4
process_id:5034
run_id:a45b2ffdc31d7f40a1652c235582d5d277eb5eec
Check this out! There is a clear definition of smoothing of a 1D signal.
http://scipy-cookbook.readthedocs.io/items/SignalSmooth.html
Shortcut:
import numpy
def smooth(x,window_len=11,window='hanning'):
"""smooth the data using a window with requested size.
This method is based on the convolution of a scaled window with the signal.
The signal is prepared by introducing reflected copies of the signal
(with the window size) in both ends so that transient parts are minimized
in the begining and end part of the output signal.
input:
x: the input signal
window_len: the dimension of the smoothing window; should be an odd integer
window: the type of window from 'flat', 'hanning', 'hamming', 'bartlett', 'blackman'
flat window will produce a moving average smoothing.
output:
the smoothed signal
example:
t=linspace(-2,2,0.1)
x=sin(t)+randn(len(t))*0.1
y=smooth(x)
see also:
numpy.hanning, numpy.hamming, numpy.bartlett, numpy.blackman, numpy.convolve
scipy.signal.lfilter
TODO: the window parameter could be the window itself if an array instead of a string
NOTE: length(output) != length(input), to correct this: return y[(window_len/2-1):-(window_len/2)] instead of just y.
"""
if x.ndim != 1:
raise ValueError, "smooth only accepts 1 dimension arrays."
if x.size < window_len:
raise ValueError, "Input vector needs to be bigger than window size."
if window_len<3:
return x
if not window in ['flat', 'hanning', 'hamming', 'bartlett', 'blackman']:
raise ValueError, "Window is on of 'flat', 'hanning', 'hamming', 'bartlett', 'blackman'"
s=numpy.r_[x[window_len-1:0:-1],x,x[-2:-window_len-1:-1]]
#print(len(s))
if window == 'flat': #moving average
w=numpy.ones(window_len,'d')
else:
w=eval('numpy.'+window+'(window_len)')
y=numpy.convolve(w/w.sum(),s,mode='valid')
return y
from numpy import *
from pylab import *
def smooth_demo():
t=linspace(-4,4,100)
x=sin(t)
xn=x+randn(len(t))*0.1
y=smooth(x)
ws=31
subplot(211)
plot(ones(ws))
windows=['flat', 'hanning', 'hamming', 'bartlett', 'blackman']
hold(True)
for w in windows[1:]:
eval('plot('+w+'(ws) )')
axis([0,30,0,1.1])
legend(windows)
title("The smoothing windows")
subplot(212)
plot(x)
plot(xn)
for w in windows:
plot(smooth(xn,10,w))
l=['original signal', 'signal with noise']
l.extend(windows)
legend(l)
title("Smoothing a noisy signal")
show()
if __name__=='__main__':
smooth_demo()
Your first usage of Map
is inside a function in the combat
class. That happens before Map
is defined, hence the error.
A forward declaration only says that a particular class will be defined later, so it's ok to reference it or have pointers to objects, etc. However a forward declaration does not say what members a class has, so as far as the compiler is concerned you can't use any of them until Map
is fully declared.
The solution is to follow the C++ pattern of the class declaration in a .h
file and the function bodies in a .cpp
. That way all the declarations appear before the first definitions, and the compiler knows what it's working with.
The Dev Tools in Edge finally added support for managing and browsing cookies.
Note: Even if you are testing and supporting IE targets, you mine as well do the heavy lifting of your browser compatibility testing by leveraging the new tooling in Edge, and defer checking in IE 11 (etc) for the last leg.
The benefit, of course, to the debugger tab is you don't have to hunt and peck for individual cookies across multiple different and historical requests.
First, the enum methods shouldn't be in all caps. They are methods just like other methods, with the same naming convention.
Second, what you are doing is not the best possible way to set up your enum. Instead of using an array of values for the values, you should use separate variables for each value. You can then implement the constructor like you would any other class.
Here's how you should do it with all the suggestions above:
public enum States {
...
MASSACHUSETTS("Massachusetts", "MA", true),
MICHIGAN ("Michigan", "MI", false),
...; // all 50 of those
private final String full;
private final String abbr;
private final boolean originalColony;
private States(String full, String abbr, boolean originalColony) {
this.full = full;
this.abbr = abbr;
this.originalColony = originalColony;
}
public String getFullName() {
return full;
}
public String getAbbreviatedName() {
return abbr;
}
public boolean isOriginalColony(){
return originalColony;
}
}
With the recent release of bootstrap 3, and the glyphicons being merged back to the main Bootstrap repo, Bootstrap CDN is now serving the complete Bootstrap 3.0 css including Glyphicons. The Bootstrap css reference is all you need to include: Glyphicons and its dependencies are on relative paths on the CDN site and are referenced in bootstrap.min.css
.
In html:
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet">
In css:
@import url("//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css");
Here is a working demo.
Note that you have to use .glyphicon
classes instead of .icon
:
Example:
<span class="glyphicon glyphicon-heart"></span>
Also note that you would still need to include bootstrap.min.js
for usage of Bootstrap JavaScript components, see Bootstrap CDN for url.
If you want to use the Glyphicons separately, you can do that by directly referencing the Glyphicons css on Bootstrap CDN.
In html:
<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-glyphicons.css" rel="stylesheet">
In css:
@import url("//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-glyphicons.css");
Since the css
file already includes all the needed Glyphicons dependencies (which are in a relative path on the Bootstrap CDN site), adding the css
file is all there is to do to start using Glyphicons.
Here is a working demo of the Glyphicons without Bootstrap.
Use this:
@Override
public void onBackPressed() {
int fragments = getFragmentManager().getBackStackEntryCount();
if (fragments == 1) {
finish();
}
super.onBackPressed();
}
Yup, this is possible of course. Here are several examples.
-- one way to do this
DECLARE @Cnt int
SELECT @Cnt = COUNT(SomeColumn)
FROM TableName
GROUP BY SomeColumn
-- another way to do the same thing
DECLARE @StreetName nvarchar(100)
SET @StreetName = (SELECT Street_Name from Streets where Street_ID = 123)
-- Assign values to several variables at once
DECLARE @val1 nvarchar(20)
DECLARE @val2 int
DECLARE @val3 datetime
DECLARE @val4 uniqueidentifier
DECLARE @val5 double
SELECT @val1 = TextColumn,
@val2 = IntColumn,
@val3 = DateColumn,
@val4 = GuidColumn,
@val5 = DoubleColumn
FROM SomeTable
Here is probably the simplest way to go about it (with a reproducible example):
library(plyr)
df <- data.frame(ID=rep(1:3, 3), Obs_1=rnorm(9), Obs_2=rnorm(9), Obs_3=rnorm(9))
ddply(df, .(ID), summarize, Obs_1_mean=mean(Obs_1), Obs_1_std_dev=sd(Obs_1),
Obs_2_mean=mean(Obs_2), Obs_2_std_dev=sd(Obs_2))
ID Obs_1_mean Obs_1_std_dev Obs_2_mean Obs_2_std_dev
1 1 -0.13994642 0.8258445 -0.15186380 0.4251405
2 2 1.49982393 0.2282299 0.50816036 0.5812907
3 3 -0.09269806 0.6115075 -0.01943867 1.3348792
EDIT: The following approach saves you a lot of typing when dealing with many columns.
ddply(df, .(ID), colwise(mean))
ID Obs_1 Obs_2 Obs_3
1 1 -0.3748831 0.1787371 1.0749142
2 2 -1.0363973 0.0157575 -0.8826969
3 3 1.0721708 -1.1339571 -0.5983944
ddply(df, .(ID), colwise(sd))
ID Obs_1 Obs_2 Obs_3
1 1 0.8732498 0.4853133 0.5945867
2 2 0.2978193 1.0451626 0.5235572
3 3 0.4796820 0.7563216 1.4404602
Thanks Box. I'm using MyStile Theme and I needed to display the product category name in my search result page. I added this function to my child theme functions.php
Hope it helps others.
/* Post Meta */
if (!function_exists( 'woo_post_meta')) {
function woo_post_meta( ) {
global $woo_options;
global $post;
$terms = get_the_terms( $post->ID, 'product_cat' );
foreach ($terms as $term) {
$product_cat = $term->name;
break;
}
?>
<aside class="post-meta">
<ul>
<li class="post-category">
<?php the_category( ', ', $post->ID) ?>
<?php echo $product_cat; ?>
</li>
<?php the_tags( '<li class="tags">', ', ', '</li>' ); ?>
<?php if ( isset( $woo_options['woo_post_content'] ) && $woo_options['woo_post_content'] == 'excerpt' ) { ?>
<li class="comments"><?php comments_popup_link( __( 'Leave a comment', 'woothemes' ), __( '1 Comment', 'woothemes' ), __( '% Comments', 'woothemes' ) ); ?></li>
<?php } ?>
<?php edit_post_link( __( 'Edit', 'woothemes' ), '<li class="edit">', '</li>' ); ?>
</ul>
</aside>
<?php
}
}
?>
I had a little trouble getting logging output from the "npm install" command when I spawned npm in a child process. The realtime logging of dependencies did not show in the parent console.
The simplest way to do what the original poster wants seems to be this (spawn npm on windows and log everything to parent console):
var args = ['install'];
var options = {
stdio: 'inherit' //feed all child process logging into parent process
};
var childProcess = spawn('npm.cmd', args, options);
childProcess.on('close', function(code) {
process.stdout.write('"npm install" finished with code ' + code + '\n');
});
You might sort the helper[]
array directly:
java.util.Arrays.sort(helper, 1, helper.length);
Sorts the array from index 1 to the end. Leaves the first item at index 0 untouched.
I was also facing this issue, below are the steps that I perform and it works for me always:
Arduino doesn't run either C or C++. It runs machine code compiled from either C, C++ or any other language that has a compiler for the Arduino instruction set.
C being a subset of C++, if Arduino can "run" C++ then it can "run" C.
If you don't already know C nor C++, you should probably start with C, just to get used to the whole "pointer" thing. You'll lose all the object inheritance capabilities though.
The reason the encoded array is longer by about a quarter is that base-64 encoding uses only six bits out of every byte; that is its reason of existence - to encode arbitrary data, possibly with zeros and other non-printable characters, in a way suitable for exchange through ASCII-only channels, such as e-mail.
The way you get your original array back is by using Convert.FromBase64String
:
byte[] temp_backToBytes = Convert.FromBase64String(temp_inBase64);
html{
height:100%;
}
.bg-img {
background: url(image.jpg) no-repeat center top;
background-size: cover;
height:100vh;
}
For an option that looks more like what you get when you print from a browser, wkhtmltopdf
provides one option.
On Ubuntu
sudo apt-get install wkhtmltopdf
And then the same command as for the pandoc example to get to the HTML:
RMDFILE=example-r-markdown
Rscript -e "require(knitr); require(markdown); knit('$RMDFILE.rmd', '$RMDFILE.md'); markdownToHTML('$RMDFILE.md', '$RMDFILE.html', options=c('use_xhml'))"
and then
wkhtmltopdf example-r-markdown.html example-r-markdown.pdf
The resulting file looked like this. It did not seem to handle the MathJax (this issue is discussed here), and the page breaks are ugly. However, in some cases, such a style might be preferred over a more LaTeX style presentation.
This was what fixed it for me. (I had already tried toggling the capabilities on/off, recreating the provisioning profile, etc).
In the Build Settings tab, in Code Signing Entitlements, my .entitlements file wasn't link for all sections. Once I added it to the Any SDK section, the error was resolved.
I like using the following to prevent things being outside my div
elements. It helps with CSS rollovers too.
.marquee{
overflow:hidden;
}
this will hide anything that moves/is outside of the div which will prevent the browser expanding and causing a scroll bar to appear.
For completeness, using the Guava library, you'd do: Splitter.on(",").split(“dog,cat,fox”)
Another example:
String animals = "dog,cat, bear,elephant , giraffe , zebra ,walrus";
List<String> l = Lists.newArrayList(Splitter.on(",").trimResults().split(animals));
// -> [dog, cat, bear, elephant, giraffe, zebra, walrus]
Splitter.split()
returns an Iterable, so if you need a List, wrap it in Lists.newArrayList()
as above. Otherwise just go with the Iterable, for example:
for (String animal : Splitter.on(",").trimResults().split(animals)) {
// ...
}
Note how trimResults()
handles all your trimming needs without having to tweak regexes for corner cases, as with String.split()
.
If your project uses Guava already, this should be your preferred solution. See Splitter documentation in Guava User Guide or the javadocs for more configuration options.
You should be able just to type bash
into the terminal to switch to bash, and then type zsh
to switch to zsh. Works for me at least.
use printf with "%05d" e.g.
printf "%05d" 1
Comparable
is Fegan
.The method compareTo
you are overidding in it should have a Fegan
object as a parameter whereas you are casting it to a FoodItems
. Your compareTo
implementation should describe how a Fegan
compare to another Fegan
.
FoodItems
implement Comparable
aswell and copy paste your actual compareTo
logic in it.In my project we solved this issue using https://www.npmjs.com/package/postcss-hover-prefix and https://modernizr.com/
First we post-process output css files with postcss-hover-prefix
. It adds .no-touch
for all css hover
rules.
const fs = require("fs");
const postcss = require("postcss");
const hoverPrfx = require("postcss-hover-prefix");
var css = fs.readFileSync(cssFileName, "utf8").toString();
postcss()
.use(hoverPrfx("no-touch"))
.process(css)
.then((result) => {
fs.writeFileSync(cssFileName, result);
});
css
a.text-primary:hover {
color: #62686d;
}
becomes
.no-touch a.text-primary:hover {
color: #62686d;
}
At runtime Modernizr
automatically adds css classes to html
tag like this
<html class="wpfe-full-height js flexbox flexboxlegacy canvas canvastext webgl
no-touch
geolocation postmessage websqldatabase indexeddb hashchange
history draganddrop websockets rgba hsla multiplebgs backgroundsize borderimage
borderradius boxshadow textshadow opacity cssanimations csscolumns cssgradients
cssreflections csstransforms csstransforms3d csstransitions fontface
generatedcontent video audio localstorage sessionstorage webworkers
applicationcache svg inlinesvg smil svgclippaths websocketsbinary">
Such post-processing of css plus Modernizr disables hover for touch devices and enables for others. In fact this approach was inspired by Bootstrap 4, how they solve the same issue: https://v4-alpha.getbootstrap.com/getting-started/browsers-devices/#sticky-hoverfocus-on-mobile
The correct method is #2. You used the section tag to define a section of your document. From the specs http://www.w3.org/TR/html5/sections.html:
The section element is not a generic container element. When an element is needed for styling purposes or as a convenience for scripting, authors are encouraged to use the div element instead
Dont use these libraries - libOmnitureAppMeasurement, It does use uniqueIdentifier which apple doesnt support anymore
If you want to be able to return to the precise version of the repository at the time you do a build it is best to tag the commit from which you make the build.
The other answers provide techniques to return the repository to the most recent commit in a branch as of a certain time-- but they might not always suffice. For example, if you build from a branch, and later delete the branch, or build from a branch that is later rebased, the commit you built from can become "unreachable" in git from any current branch. Unreachable objects in git may eventually be removed when the repository is compacted.
Putting a tag on the commit means it never becomes unreachable, no matter what you do with branches afterwards (barring removing the tag).
You can add FrameLayout
to the fragment and replace it with another fragment when it initializes.
This way , you could consider the other fragment to be inside the first fragment.
Just divide the number of td to 100%. Example, you have 4 td's:
<html>
<table>
<tr>
<td style="width:25%">This is a text</td>
<td style="width:25%">This is some text, this is some text</td>
<td style="width:25%">This is another text, this is another text</td>
<td style="width:25%">This is the last text, this is the last text</td>
</tr>
</table>
</html>
We use 25% in each td to maximize the 100% space of the entire table
There are several possibilities (note that the those long values aren't the same as the Unix epoch.
For your example (to reverse ToFileTime()
) just use DateTime.FromFileTime(t)
.
Curl has a specific option, --write-out
, for this:
$ curl -o /dev/null --silent --head --write-out '%{http_code}\n' <url>
200
-o /dev/null
throws away the usual output--silent
throws away the progress meter--head
makes a HEAD HTTP request, instead of GET--write-out '%{http_code}\n'
prints the required status codeTo wrap this up in a complete Bash script:
#!/bin/bash
while read LINE; do
curl -o /dev/null --silent --head --write-out "%{http_code} $LINE\n" "$LINE"
done < url-list.txt
(Eagle-eyed readers will notice that this uses one curl process per URL, which imposes fork and TCP connection penalties. It would be faster if multiple URLs were combined in a single curl, but there isn't space to write out the monsterous repetition of options that curl requires to do this.)
Try this:
Swift 4
myButton.addTarget(self,
action: #selector(myAction),
for: .touchUpInside)
Objective-C
[myButton addTarget:self
action:@selector(myAction)
forControlEvents:UIControlEventTouchUpInside];
You can find a rich source of information in Apple's Documentation. Have a look at the UIButton's documentation, it will reveal that UIButton is a descendant of UIControl, which implements the method to add targets.
--
You'll need to pay attention to whether add colon or not after myAction
in
action:@selector(myAction)
Here's the reference.
In order to define a thread formally, we must first understand the boundaries of where a thread operates.
A computer program becomes a process when it is loaded from some store into the computer's memory and begins execution. A process can be executed by a processor or a set of processors. A process description in memory contains vital information such as the program counter which keeps track of the current position in the program (i.e. which instruction is currently being executed), registers, variable stores, file handles, signals, and so forth.
A thread is a sequence of such instructions within a program that can be executed independently of other code. The figure shows the concept:
Threads are within the same process address space, thus, much of the information present in the memory description of the process can be shared across threads.
Some information cannot be replicated, such as the stack (stack pointer to a different memory area per thread), registers and thread-specific data. This information suffices to allow threads to be scheduled independently of the program's main thread and possibly one or more other threads within the program.
Explicit operating system support is required to run multithreaded programs. Fortunately, most modern operating systems support threads such as Linux (via NPTL), BSD variants, Mac OS X, Windows, Solaris, AIX, HP-UX, etc. Operating systems may use different mechanisms to implement multithreading support.
Here, you can find more information about the topic. That was also my information-source.
Let me just add a sentence coming from Introduction to Embedded System by Edward Lee and Seshia:
Threads are imperative programs that run concurrently and share a memory space. They can access each others’ variables. Many practitioners in the field use the term “threads” more narrowly to refer to particular ways of constructing programs that share memory, [others] to broadly refer to any mechanism where imperative programs run concurrently and share memory. In this broad sense, threads exist in the form of interrupts on almost all microprocessors, even without any operating system at all (bare iron).
Using Function.prototype.bind()
var array_of_functions = [
first_function.bind(null,'a string'),
second_function.bind(null,'a string'),
third_function.bind(null,'a string'),
forth_function.bind(null,'a string')
]
Have you seen the wiki pages on the zxing website? It seems you might find GettingStarted, DeveloperNotes and ScanningViaIntent helpful.
It appears that completely uninstalling Git, restarting (the classic Windows cure), and reinstalling Git was the cure. I also wiped out all bash config files which were left over (they were manually created). Everything is fast again.
If for some reason reinstalling isn't possible (or desirable), then I would definitely try changing the PS1 variable referenced in Chris Dolan's answer; it resulted in significant speedups in certain operations.
Let's assume that (1) you don't have a large memory (2) you have row headings in a list (3) all the data values are floats; if they're all integers up to 32- or 64-bits worth, that's even better.
On a 32-bit Python, storing a float in a list takes 16 bytes for the float object and 4 bytes for a pointer in the list; total 20. Storing a float in an array.array('d') takes only 8 bytes. Increasingly spectacular savings are available if all your data are int (any negatives?) that will fit in 8, 4, 2 or 1 byte(s) -- especially on a recent Python where all ints are longs.
The following pseudocode assumes floats stored in array.array('d'). In case you don't really have a memory problem, you can still use this method; I've put in comments to indicate the changes needed if you want to use a list.
# Preliminary:
import array # list: delete
hlist = []
dlist = []
for each row:
hlist.append(some_heading_string)
dlist.append(array.array('d')) # list: dlist.append([])
# generate data
col_index = -1
for each column:
col_index += 1
for row_index in xrange(len(hlist)):
v = calculated_data_value(row_index, colindex)
dlist[row_index].append(v)
# write to csv file
for row_index in xrange(len(hlist)):
row = [hlist[row_index]]
row.extend(dlist[row_index])
csv_writer.writerow(row)
You can create a new blank solution and add your different projects to it.
For Python 3
Remove the rb
argument and use either r
or don't pass argument (default read mode
).
with open( <path-to-file>, 'r' ) as theFile:
reader = csv.DictReader(theFile)
for line in reader:
# line is { 'workers': 'w0', 'constant': 7.334, 'age': -1.406, ... }
# e.g. print( line[ 'workers' ] ) yields 'w0'
print(line)
For Python 2
import csv
with open( <path-to-file>, "rb" ) as theFile:
reader = csv.DictReader( theFile )
for line in reader:
# line is { 'workers': 'w0', 'constant': 7.334, 'age': -1.406, ... }
# e.g. print( line[ 'workers' ] ) yields 'w0'
Python has a powerful built-in CSV handler. In fact, most things are already built in to the standard library.
Have you tried this: IE NetRenderer
I wrote a shell function for a similar use case I encounter daily on projects. This is basically a shortcut for keeping local branches up to date with a common branch like develop before opening a PR, etc.
Posting this even though you don't want to use
checkout
, in case others don't mind that constraint.
glmh
("git pull and merge here") will automatically checkout branchB
, pull
the latest, re-checkout branchA
, and merge branchB
.
Doesn't address the need to keep a local copy of branchA, but could easily be modified to do so by adding a step before checking out branchB. Something like...
git branch ${branchA}-no-branchB ${branchA}
For simple fast-forward merges, this skips to the commit message prompt.
For non fast-forward merges, this places your branch in the conflict resolution state (you likely need to intervene).
.bashrc
or .zshrc
, etc:glmh() {
branchB=$1
[ $# -eq 0 ] && { branchB="develop" }
branchA="$(git branch | grep '*' | sed 's/* //g')"
git checkout ${branchB} && git pull
git checkout ${branchA} && git merge ${branchB}
}
# No argument given, will assume "develop"
> glmh
# Pass an argument to pull and merge a specific branch
> glmh your-other-branch
Note: This is not robust enough to hand-off of args beyond branch name to
git merge
The best explanation of how core.autocrlf
works is found on the gitattributes man page, in the text
attribute section.
This is how core.autocrlf
appears to work currently (or at least since v1.7.2 from what I am aware):
core.autocrlf = true
LF
characters are normalized to CRLF
in your working tree; files that contain CRLF
in the repository will not be touchedLF
characters in the repository, are normalized from CRLF
to LF
when committed back to the repository. Files that contain CRLF
in the repository will be committed untouched.core.autocrlf = input
CRLF
characters are normalized to LF
when committed back to the repository.core.autocrlf = false
core.eol
dictates EOL characters in the text files of your working tree.core.eol = native
by default, which means Windows EOLs are CRLF
and *nix EOLs are LF
in working trees.gitattributes
settings determines EOL character normalization for commits to the repository (default is normalization to LF
characters).I've only just recently researched this issue and I also find the situation to be very convoluted. The core.eol
setting definitely helped clarify how EOL characters are handled by git.
This is not an answer per se, but here's something interesting:
$y = str_replace('z', 'e', 'zxzc');
$y("malicious code");
In the same spirit, call_user_func_array()
can be used to execute obfuscated functions.
Conventional Definition - An interface is a contract that specifies the methods which needs to be implemented by the class implementing it.
The Definition of Interface has changed over time. Do you think Interface just have method declarations only ? What about static final variables and what about default definitions after Java 5.
Interfaces were introduced to Java because of the Diamond problem with multiple Inheritance and that's what they actually intend to do.
Interfaces are the constructs that were created to get away with the multiple inheritance problem and can have abstract methods , default definitions and static final variables.
This will probably solve your problem: https://help.ubuntu.com/community/EnvironmentVariables
Session-wide environment variables
In order to set environment variables in a way that affects a particular user's environment, one should not place commands to set their values in particular shell script files in the user's home directory, but use:
~/.pam_environment - This file is specifically meant for setting a user's environment. It is not a script file, but rather consists of assignment expressions, one per line.
Not recommended:
~/.profile - This is probably the best file for placing environment variable assignments in, since it gets executed automatically by the DisplayManager during the startup process desktop session as well as by the login shell when one logs-in from the textual console.
Have you installed Fiddler2?
It will let you see exactly what is being requested, what is being sent back, etc. It doesn't sound plausible that the browser would really hit its cache for different URLs.
Just increment i
by 3 in each step:
Debug.Assert((theData.Length % 3) == 0); // 'theData' will always be divisible by 3
for (int i = 0; i < theData.Length; i += 3)
{
//grab 3 items at a time and do db insert,
// continue until all items are gone..
string item1 = theData[i+0];
string item2 = theData[i+1];
string item3 = theData[i+2];
// use the items
}
To answer some comments, it is a given that theData.Length
is a multiple of 3 so there is no need to check for theData.Length-2
as an upperbound. That would only mask errors in the preconditions.
By default, the post request has maximum size of 8mb. But you can modify it according to your requirements. The modification can be done by opening php.ini file (php configuration setting).
Find
post_max_size=8M //for me, that was on line:771
replace 8 according to your requirements.
If it helps, I tend to conceive "lists" in R as "records" in other pre-OO languages:
The name "record" would clash with the standard meaning of "records" (aka rows) in database parlance, and may be this is why their name suggested itself: as lists (of fields).
You haven't provided any of your code from LightFactoryRemote
, so this is only a presumption, but it looks like the kind of problem you'd be seeing if you were using the bindService
method on it's own.
To ensure a service is kept running, even after the activity that started it has had its onDestroy
method called, you should first use startService
.
The android docs for startService state:
Using startService() overrides the default service lifetime that is managed by bindService(Intent, ServiceConnection, int): it requires the service to remain running until stopService(Intent) is called, regardless of whether any clients are connected to it.
Whereas for bindService:
The service will be considered required by the system only for as long as the calling context exists. For example, if this Context is an Activity that is stopped, the service will not be required to continue running until the Activity is resumed.
So what's happened is the activity that bound (and therefore started) the service, has been stopped and thus the system thinks the service is no longer required and causes that error (and then probably stops the service).
In this example the service should be kept running regardless of whether the calling activity is running.
ComponentName myService = startService(new Intent(this, myClass.class));
bindService(new Intent(this, myClass.class), myServiceConn, BIND_AUTO_CREATE);
The first line starts the service, and the second binds it to the activity.
A negative lookahead says, at this position, the following regex can not match.
Let's take a simplified example:
a(?!b(?!c))
a Match: (?!b) succeeds
ac Match: (?!b) succeeds
ab No match: (?!b(?!c)) fails
abe No match: (?!b(?!c)) fails
abc Match: (?!b(?!c)) succeeds
The last example is a double negation: it allows a b
followed by c
. The nested negative lookahead becomes a positive lookahead: the c
should be present.
In each example, only the a
is matched. The lookahead is only a condition, and does not add to the matched text.
Yes you can use CASE
UPDATE table
SET columnB = CASE fieldA
WHEN columnA=1 THEN 'x'
WHEN columnA=2 THEN 'y'
ELSE 'z'
END
WHERE columnC = 1
While a few of these answers will get you in the ballpark, you cannot do what you're trying to do with arbitrary dates for SqlServer 2005 and earlier because of daylight savings time. Using the difference between the current local and current UTC will give me the offset as it exists today. I have not found a way to determine what the offset would have been for the date in question.
That said, I know that SqlServer 2008 provides some new date functions that may address that issue, but folks using an earlier version need to be aware of the limitations.
Our approach is to persist UTC and perform the conversion on the client side where we have more control over the conversion's accuracy.
I'm going to vote for ColdFusion. It's trying to be a cool scripting language, but being done up in html-like tags was driving me nuts - it's been a little while since I had to deal with it, but as I remember variable declarations could be a bear, and it was easy to have slightly different versions of the server on two different environments which would have code working differently on both.
If you wanted to do anything really impressive with it, it basically involved creating an object in Java and figuring out how to link it in with coldfusion's server so you could invoke it as a tag. I'm working in PHP, and even though PHP has it's problems, ColdFusion was definately worse.
Working with an unbound control (ie I manage the content programmatically), without the EndEdit() it only called the CurrentCellDirtyStateChanged once and then never again; but I found that with the EndEdit() CurrentCellDirtyStateChanged was called twice (the second probably caused by the EndEdit() but I didn't check), so I did the following, which worked best for me:
bool myGridView_DoCheck = false;
private void myGridView_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
if (!myGridView_DoCheck)
{
myGridView_DoCheck = true;
myGridView.EndEdit();
// do something here
}
else
myGridView_DoCheck = false;
}
Updated Answer:
The documentation for SmtpClient
, the class used in this answer, now reads, 'Obsolete("SmtpClient and its network of types are poorly designed, we strongly recommend you use https://github.com/jstedfast/MailKit and https://github.com/jstedfast/MimeKit instead")'.
Source: https://www.infoq.com/news/2017/04/MailKit-MimeKit-Official
Original Answer:
Using the MailDefinition class is the wrong approach. Yes, it's handy, but it's also primitive and depends on web UI controls--that doesn't make sense for something that is typically a server-side task.
The approach presented below is based on MSDN documentation and Qureshi's post on CodeProject.com.
NOTE: This example extracts the HTML file, images, and attachments from embedded resources, but using other alternatives to get streams for these elements are fine, e.g. hard-coded strings, local files, and so on.
Stream htmlStream = null;
Stream imageStream = null;
Stream fileStream = null;
try
{
// Create the message.
var from = new MailAddress(FROM_EMAIL, FROM_NAME);
var to = new MailAddress(TO_EMAIL, TO_NAME);
var msg = new MailMessage(from, to);
msg.Subject = SUBJECT;
msg.SubjectEncoding = Encoding.UTF8;
// Get the HTML from an embedded resource.
var assembly = Assembly.GetExecutingAssembly();
htmlStream = assembly.GetManifestResourceStream(HTML_RESOURCE_PATH);
// Perform replacements on the HTML file (if you're using it as a template).
var reader = new StreamReader(htmlStream);
var body = reader
.ReadToEnd()
.Replace("%TEMPLATE_TOKEN1%", TOKEN1_VALUE)
.Replace("%TEMPLATE_TOKEN2%", TOKEN2_VALUE); // and so on...
// Create an alternate view and add it to the email.
var altView = AlternateView.CreateAlternateViewFromString(body, null, MediaTypeNames.Text.Html);
msg.AlternateViews.Add(altView);
// Get the image from an embedded resource. The <img> tag in the HTML is:
// <img src="pid:IMAGE.PNG">
imageStream = assembly.GetManifestResourceStream(IMAGE_RESOURCE_PATH);
var linkedImage = new LinkedResource(imageStream, "image/png");
linkedImage.ContentId = "IMAGE.PNG";
altView.LinkedResources.Add(linkedImage);
// Get the attachment from an embedded resource.
fileStream = assembly.GetManifestResourceStream(FILE_RESOURCE_PATH);
var file = new Attachment(fileStream, MediaTypeNames.Application.Pdf);
file.Name = "FILE.PDF";
msg.Attachments.Add(file);
// Send the email
var client = new SmtpClient(...);
client.Credentials = new NetworkCredential(...);
client.Send(msg);
}
finally
{
if (fileStream != null) fileStream.Dispose();
if (imageStream != null) imageStream.Dispose();
if (htmlStream != null) htmlStream.Dispose();
}
I'd have to give more thought to a complete solution, but as a handy optimisation, I wonder whether it might be worth pre-computing a table of frequencies of digrams and trigrams (2- and 3-letter combinations) based on all the words from your dictionary, and use this to prioritise your search. I'd go with the starting letters of words. So if your dictionary contained the words "India", "Water", "Extreme", and "Extraordinary", then your pre-computed table might be:
'IN': 1
'WA': 1
'EX': 2
Then search for these digrams in the order of commonality (first EX, then WA/IN)
I suggest using Jxpath, it allows you to do queries on object graphs as if it where xpath like
JXPathContext.newContext(cats).
getValue("//*[@drinks='milk']")
You're not saying how exactly putdata()
is not behaving. I'm assuming you're doing
>>> pic.putdata(a)
Traceback (most recent call last):
File "...blablabla.../PIL/Image.py", line 1185, in putdata
self.im.putdata(data, scale, offset)
SystemError: new style getargs format but argument is not a tuple
This is because putdata
expects a sequence of tuples and you're giving it a numpy array. This
>>> data = list(tuple(pixel) for pixel in pix)
>>> pic.putdata(data)
will work but it is very slow.
As of PIL 1.1.6, the "proper" way to convert between images and numpy arrays is simply
>>> pix = numpy.array(pic)
although the resulting array is in a different format than yours (3-d array or rows/columns/rgb in this case).
Then, after you make your changes to the array, you should be able to do either pic.putdata(pix)
or create a new image with Image.fromarray(pix)
.
I've had success using TriadMixing and CIE94 to avoid similar colors. The following image uses input colors red, yellow, and white. See here.
Perl Core Language - Little Black Book - excellent reference!
Since this is ASP.NET, you can simply use the ASP <%= %> tag to print the generated ClientID of txtTitle:
$('<%= txtTitle.ClientID %>')
This will result in...
$('ctl00$ContentBody$txtTitle')
... when the page is rendered.
Note: In Visual Studio, Intellisense will yell at you for putting ASP tags in JavaScript. You can ignore this as the result is valid JavaScript.
The first programming job I had was with a Microsoft QuickBASIC 4.5 shop. The lead developer had been working in BASIC just about forever, so most of the advanced (!) features of QuickBASIC were off-limits because they were new and he didn't understand them. So:
That was a really fun job. No, seriously.
Try to do something like this:
db.getCollection('collectionName').find({'ArrayName.1': {$exists: true}})
1 is number, if you want to fetch record greater than 50 then do ArrayName.50 Thanks.
If you installed with package control, search for "Package Control: Remove Package" in the command palette (accessed with Ctrl+Shift+P). Otherwise you can just remove the Emmet directory.
If you wish to use a custom caption to access commands, create Default.sublime-commands
in your User folder. Then insert something similar to the following.
[
{
"caption": "Package Control: Uninstall Package",
"command": "remove_package"
}
]
Of course, you can customize the command and caption as you see fit.
If table_2
is empty, then try the following insert statement:
insert into table_2 (itemid,location1)
select itemid,quantity from table_1 where locationid=1
If table_2
already contains the itemid
values, then try this update statement:
update table_2 set location1=
(select quantity from table_1 where locationid=1 and table_1.itemid = table_2.itemid)
I suspect the condition you are looking for is DUP_VAL_ON_INDEX
EXCEPTION
WHEN DUP_VAL_ON_INDEX THEN
DBMS_OUTPUT.PUT_LINE('OH DEAR. I THINK IT IS TIME TO PANIC!')
public static boolean isDirectory(String path) {
return path !=null && new File(path).isDirectory();
}
To answer the question directly.
Instances of the the class android.content.Context provide the connection to the Android system which executes the application. For example, you can check the size of the current device display via the Context.
It also gives access to the resources of the project. It is the interface to global information about the application environment.
The Context class also provides access to Android services, e.g., the alarm manager to trigger time based events.
Activities and services extend the Context class. Therefore they can be directly used to access the Context.
You could extend the Number
object:
Number.prototype.pad = function(size) {
var s = String(this);
while (s.length < (size || 2)) {s = "0" + s;}
return s;
}
Examples:
(9).pad(); //returns "09"
(7).pad(3); //returns "007"
The full command is:
dir /b /a-d
Let me break it up;
Basically the /b
is what you look for.
/a-d
will exclude the directory names.
For more information see dir /?
for other arguments that you can use with the dir
command.
if (!myString.replace(/^\s+|\s+$/g,""))
alert('string is only whitespace');
Change .text
to .textContent
to get/set the text content.
Or since you're dealing with a single text node, use .firstChild.data
in the same manner.
Also, let's make sensible use of a variable, and enjoy some code reduction and eliminate redundant DOM selection by caching the result of getElementById
.
function toggleText(button_id)
{
var el = document.getElementById(button_id);
if (el.firstChild.data == "Lock")
{
el.firstChild.data = "Unlock";
}
else
{
el.firstChild.data = "Lock";
}
}
Or even more compact like this:
function toggleText(button_id) {
var text = document.getElementById(button_id).firstChild;
text.data = text.data == "Lock" ? "Unlock" : "Lock";
}
Of course, "Fagner Antunes Dornelles" is correct in its answer. But it seems to me that it is worth checking the registry branch itself in addition, or be sure of the part that is exactly there.
For example ("dirty hack"), i need to establish trust in the RMS infrastructure, otherwise when i open Word or Excel documents, i will be prompted for "Active Directory Rights Management Services". Here's how i can add remote trust to me servers in the enterprise infrastructure.
foreach (var strServer in listServer)
{
try
{
RegistryKey regCurrentUser = Registry.CurrentUser.OpenSubKey($"Software\\Classes\\Local Settings\\Software\\Microsoft\\MSIPC\\{strServer}", false);
if (regCurrentUser == null)
throw new ApplicationException("Not found registry SubKey ...");
if (regCurrentUser.GetValueNames().Contains("UserConsent") == false)
throw new ApplicationException("Not found value in SubKey ...");
}
catch (ApplicationException appEx)
{
Console.WriteLine(appEx);
try
{
RegistryKey regCurrentUser = Registry.CurrentUser.OpenSubKey($"Software\\Classes\\Local Settings\\Software\\Microsoft\\MSIPC", true);
RegistryKey newKey = regCurrentUser.CreateSubKey(strServer, true);
newKey.SetValue("UserConsent", 1, RegistryValueKind.DWord);
}
catch(Exception ex)
{
Console.WriteLine($"{ex} Pipec kakoito ...");
}
}
}
You may use pip
for that without using the network. See in the docs (search for "Install a particular source archive file"). Any of those should work:
pip install relative_path_to_seaborn.tar.gz
pip install absolute_path_to_seaborn.tar.gz
pip install file:///absolute_path_to_seaborn.tar.gz
Or you may uncompress the archive and use setup.py
directly with either pip
or python
:
cd directory_containing_tar.gz
tar -xvzf seaborn-0.10.1.tar.gz
pip install seaborn-0.10.1
python setup.py install
Of course, you should also download required packages and install them the same way before you proceed.
If that question is connected to your other Hudson questions use the command they provide. This way with XML from the command line:
$ curl -X POST -d '<run>...</run>' \
http://user:pass@myhost:myport/path/of/url
You need to change it a little bit to read from a file:
$ curl -X POST -d @myfilename http://user:pass@myhost:myport/path/of/url
Read the manpage. following an abstract for -d Parameter.
-d/--data
(HTTP) Sends the specified data in a POST request to the HTTP server, in the same way that a browser does when a user has filled in an HTML form and presses the submit button. This will cause curl to pass the data to the server using the content-type application/x-www-form-urlencoded. Compare to -F/--form.
-d/--data is the same as --data-ascii. To post data purely binary, you should instead use the --data-binary option. To URL-encode the value of a form field you may use --data-urlencode.
If any of these options is used more than once on the same command line, the data pieces specified will be merged together with a separating &-symbol. Thus, using '-d name=daniel -d skill=lousy' would generate a post chunk that looks like 'name=daniel&skill=lousy'.
If you start the data with the letter @, the rest should be a file name to read the data from, or - if you want curl to read the data from stdin. The contents of the file must already be URL-encoded. Multiple files can also be specified. Posting data from a file named 'foobar' would thus be done with --data @foobar.
Because you want to set it when the form loads, you have to first .Show() the form before you can call the .Focus() method. The form cannot take focus in the Load event until you show the form
Private Sub RibbonForm1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Show()
TextBox1.Select()
End Sub
That's exactly how you use it. There is a possibility that the address you have does not correspond to something directly in your source code though.
For example:
$ cat t.c
#include <stdio.h>
int main()
{
printf("hello\n");
return 0;
}
$ gcc -g t.c
$ addr2line -e a.out 0x400534
/tmp/t.c:3
$ addr2line -e a.out 0x400550
??:0
0x400534
is the address of main
in my case. 0x400408
is also a valid function address in a.out
, but it's a piece of code generated/imported by GCC, that has no debug info. (In this case, __libc_csu_init
. You can see the layout of your executable with readelf -a your_exe
.)
Other times when addr2line
will fail is if you're including a library that has no debug information.
This happened to me when I ^C
in the middle of a git push
to GitHub. GitHub did not show that the changes had been made, however.
To fix it, I made a change to my working tree, committed, and then pushed again. It worked perfectly fine.
I hope 10 years isn't too late, I used this in Windows Scheduler;
"C:\Program Files\Microsoft SQL Server\110\Tools\Binn\SQLCMD.EXE"
-S BLRREPSRVR\SQLEXPRESS -d Reporting_DB -o "C:\Reports\CHP_Gen.csv" -Q "EXEC dbo.CHP_Generation_Report" -W -w 999 -s ","
It opens sql command .exe and runs a script designed for sql command. The sql command script is very easy to use with a few google searches and trial and error. You can see that it picks a database, defines output location and executes a procedure. The procedure is just a query selecting which rows and columns to display from a table in the database.
I like to start with a class like this class settings { public int X {get;set;} public string Y { get; set; } // repeat as necessary
public settings()
{
this.X = defaultForX;
this.Y = defaultForY;
// repeat ...
}
public void Parse(Uri uri)
{
// parse values from query string.
// if you need to distinguish from default vs. specified, add an appropriate property
}
This has worked well on 100's of projects. You can use one of the many other parsing solutions to parse values.
You can have many java versions in your system.
I think you should add the java 8 in yours JREs installed or edit.
Take a look my screen:
If you click in edit (check your java 8 path):
You could do it on the client with moment-timezone and send the value to server; sample usage:
> moment.tz.guess()
"America/Asuncion"
Here are a couple of methods I wrote that will always round up or down to any value.
public static Double RoundUpToNearest(Double passednumber, Double roundto)
{
// 105.5 up to nearest 1 = 106
// 105.5 up to nearest 10 = 110
// 105.5 up to nearest 7 = 112
// 105.5 up to nearest 100 = 200
// 105.5 up to nearest 0.2 = 105.6
// 105.5 up to nearest 0.3 = 105.6
//if no rounto then just pass original number back
if (roundto == 0)
{
return passednumber;
}
else
{
return Math.Ceiling(passednumber / roundto) * roundto;
}
}
public static Double RoundDownToNearest(Double passednumber, Double roundto)
{
// 105.5 down to nearest 1 = 105
// 105.5 down to nearest 10 = 100
// 105.5 down to nearest 7 = 105
// 105.5 down to nearest 100 = 100
// 105.5 down to nearest 0.2 = 105.4
// 105.5 down to nearest 0.3 = 105.3
//if no rounto then just pass original number back
if (roundto == 0)
{
return passednumber;
}
else
{
return Math.Floor(passednumber / roundto) * roundto;
}
}
I zipped the xml in a Mac OS and sent it to a Windows machine, the default compression changes these files so the encoding sent this message.
import java.util.Scanner;
public class Solution {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int i = scan.nextInt();
double d = scan.nextDouble();
String s="";
while(scan.hasNext())
{
s=scan.nextLine();
}
System.out.println("String: " +s);
System.out.println("Double: " + d);
System.out.println("Int: " + i);
}
}
You have a type-o:
its: height: 200x;
and it should be: height: 200px;
also check the image url; it should be in the same directory it seems.
Also, dont use 'px' at null (aka '0') values. 0px, 0em, 0% is still 0. :)
top: 0px;
is the same with:
top: 0;
Good Luck!
This is using what leech talked about, but making it work for IE (IE doesn't support matches):
function closest(el, selector, stopSelector) {
var retval = null;
while (el) {
if (el.className.indexOf(selector) > -1) {
retval = el;
break
} else if (stopSelector && el.className.indexOf(stopSelector) > -1) {
break
}
el = el.parentElement;
}
return retval;
}
It's not perfect, but it works if the selector is unique enough so it won't accidentally match the incorrect element.
std::string stringify(double x)
{
std::ostringstream o;
if (!(o << x))
throw BadConversion("stringify(double)");
return o.str();
}
C++ FAQ: http://www.parashift.com/c++-faq-lite/misc-technical-issues.html#faq-39.1
If the array contains integers, the value cannot be NULL. NULL can be used if the array contains pointers.
SomeClass* myArray[2];
myArray[0] = new SomeClass();
myArray[1] = NULL;
if (myArray[0] != NULL) { // this will be executed }
if (myArray[1] != NULL) { // this will NOT be executed }
As http://en.cppreference.com/w/cpp/types/NULL states, NULL is a null pointer constant!
Here's a simplified function that will read in bytes and create a string. It assumes you probably already know what encoding the file is in (and otherwise defaults).
static final int BUFF_SIZE = 2048;
static final String DEFAULT_ENCODING = "utf-8";
public static String readFileToString(String filePath, String encoding) throws IOException {
if (encoding == null || encoding.length() == 0)
encoding = DEFAULT_ENCODING;
StringBuffer content = new StringBuffer();
FileInputStream fis = new FileInputStream(new File(filePath));
byte[] buffer = new byte[BUFF_SIZE];
int bytesRead = 0;
while ((bytesRead = fis.read(buffer)) != -1)
content.append(new String(buffer, 0, bytesRead, encoding));
fis.close();
return content.toString();
}
.metadata
is corrupted.
Steps:
Warning: Deleting .metadata will delete all your Eclipse configurations, plugins, project setups. Make a backup before you attempt this!
Stop eclipse, delete .metadata in workspace and restart eclipse
Import Project
Run again
A very simple example of this
import React, { Component } from 'react';
import { View, Text } from 'react-native';
export default class App extends React.Component {
constructor(props) {
super(props);
this.state = {
data : null
};
}
componentWillMount() {
this.renderMyData();
}
renderMyData(){
fetch('https://your url')
.then((response) => response.json())
.then((responseJson) => {
this.setState({ data : responseJson })
})
.catch((error) => {
console.error(error);
});
}
render(){
return(
<View>
{this.state.data ? <MyComponent data={this.state.data} /> : <MyLoadingComponnents /> }
</View>
);
}
}
I found a bug on Ankur answer and I've fixed it with this correction:
<input type="text" pattern="[a-zA-Z]+"
oninvalid="setCustomValidity('Plz enter on Alphabets ')"
onchange="try{setCustomValidity('')}catch(e){}" />
The bug seen when you set an invalid input data, then correct the input and send the form. oops! you can't do this. I've tested it on firefox and chrome
No CSS border bottom:
<table>
<thead>
<tr>
<th>Title</th>
</tr>
<tr>
<th>
<hr>
</th>
</tr>
</thead>
</table>
this.myService.getConfig().subscribe(
(res) => console.log(res),
(err) => console.log(err),
() => console.log('done!')
);
When you change an ASP.NET website's configuration file, it restarts the application to reflect the changes...
When you do an IIS reset, that restarts all applications running on that IIS instance.
@PathVariable
is used to tell Spring that part of the URI path is a value you want passed to your method. Is this what you want, or are the variables supposed to be form data posted to the URI?
If you want form data, use @RequestParam
instead of @PathVariable
.
If you want @PathVariable
, you need to specify placeholders in the @RequestMapping
entry to tell Spring where the path variables fit in the URI. For example, if you want to extract a path variable called contentId
, you would use:
@RequestMapping(value = "/whatever/{contentId}", method = RequestMethod.POST)
Edit: Additionally, if your path variable could contain a '.' and you want that part of the data, then you will need to tell Spring to grab everything, not just the stuff before the '.':
@RequestMapping(value = "/whatever/{contentId:.*}", method = RequestMethod.POST)
This is because the default behaviour of Spring is to treat that part of the URL as if it is a file extension, and excludes it from variable extraction.
Try this it worked for me
Write this in your Controller
public class DemoController: Controller
public async Task<FileStreamResult> GetLogoImage(string logoimage)
{
string str = "" ;
var filePath = Server.MapPath("~/App_Data/" + SubfolderName);//If subfolder exist otherwise leave.
// DirectoryInfo dir = new DirectoryInfo(filePath);
string[] filePaths = Directory.GetFiles(@filePath, "*.*");
foreach (var fileTemp in filePaths)
{
str= fileTemp.ToString();
}
return File(new MemoryStream(System.IO.File.ReadAllBytes(str)), System.Web.MimeMapping.GetMimeMapping(str), Path.GetFileName(str));
}
Here is my view
<div><a href="/DemoController/GetLogoImage?Type=Logo" target="_blank">Download Logo</a></div>
Even though it's convenient to use, it seems like the convert-to-hash solution costs quite a lot of performance, which was an issue for me.
#!/usr/bin/perl
use Benchmark;
my @list;
for (1..10_000) {
push @list, $_;
}
timethese(10000, {
'grep' => sub {
if ( grep(/^5000$/o, @list) ) {
# code
}
},
'hash' => sub {
my %params = map { $_ => 1 } @list;
if ( exists($params{5000}) ) {
# code
}
},
});
Output of benchmark test:
Benchmark: timing 10000 iterations of grep, hash...
grep: 8 wallclock secs ( 7.95 usr + 0.00 sys = 7.95 CPU) @ 1257.86/s (n=10000)
hash: 50 wallclock secs (49.68 usr + 0.01 sys = 49.69 CPU) @ 201.25/s (n=10000)
awk 'NF' filename
awk 'NF > 0' filename
sed -i '/^$/d' filename
awk '!/^$/' filename
awk '/./' filename
The NF also removes lines containing only blanks or tabs, the regex /^$/
does not.
If you're using a <select>
, .val()
gets the 'value' of the selected <option>
. If it doesn't have a value
, it may fallback to the id
. Put the value you want it to return in the value
attribute of each <option>
Edit: See comments for clarification on what value
actually is (not necessarily equal to the value
attribute).
Some things before the actual code..
the hash (#) you use as the selector is for IDs and not for names of elements. also the disabled attribute is not a true false scenario .. if it has disabled attribute it means that it is true .. you need to remove the attribute and not set it to false. Also there are the form selectors that identify specific types of items in a form ..
so the code would be
$("input:checkbox[name='chk0']").removeAttr('disabled');
Bringing the answer up-to-date
You should use the .prop()
method (added since v1.6)
$("input:checkbox[name='chk0']").prop('disabled', false); // to enable the checkbox
and
$("input:checkbox[name='chk0']").prop('disabled', true); // to disable the checkbox
TEXT
and VarChar(MAX)
are Non-Unicode large Variable Length character data type, which can store maximum of 2147483647 Non-Unicode characters (i.e. maximum storage capacity is: 2GB).
As per MSDN link Microsoft is suggesting to avoid using the Text datatype and it will be removed in a future versions of Sql Server. Varchar(Max) is the suggested data type for storing the large string values instead of Text data type.
Data of a Text
type column is stored out-of-row in a separate LOB data pages. The row in the table data page will only have a 16 byte pointer to the LOB data page where the actual data is present. While Data of a Varchar(max)
type column is stored in-row if it is less than or equal to 8000 byte. If Varchar(max) column value is crossing the 8000 bytes then the Varchar(max) column value is stored in a separate LOB data pages and row will only have a 16 byte pointer to the LOB data page where the actual data is present. So In-Row
Varchar(Max) is good for searches and retrieval.
Some of the string functions, operators or the constructs which doesn’t work on the Text type column, but they do work on VarChar(Max) type column.
=
Equal to Operator on VarChar(Max) type columnGroup by clause on VarChar(Max) type column
As we know that the VarChar(Max) type column values are stored out-of-row only if the length of the value to be stored in it is greater than 8000 bytes or there is not enough space in the row, otherwise it will store it in-row. So if most of the values stored in the VarChar(Max) column are large and stored out-of-row, the data retrieval behavior will almost similar to the one that of the Text type column.
But if most of the values stored in VarChar(Max) type columns are small enough to store in-row. Then retrieval of the data where LOB columns are not included requires the more number of data pages to read as the LOB column value is stored in-row in the same data page where the non-LOB column values are stored. But if the select query includes LOB column then it requires less number of pages to read for the data retrieval compared to the Text type columns.
Conclusion
Use VarChar(MAX)
data type rather than TEXT
for good performance.
You can define a table dynamically just as you are inserting into it dynamically, but the problem is with the scope of temp tables. For example, this code:
DECLARE @sql varchar(max)
SET @sql = 'CREATE TABLE #T1 (Col1 varchar(20))'
EXEC(@sql)
INSERT INTO #T1 (Col1) VALUES ('This will not work.')
SELECT * FROM #T1
will return with the error "Invalid object name '#T1'." This is because the temp table #T1 is created at a "lower level" than the block of executing code. In order to fix, use a global temp table:
DECLARE @sql varchar(max)
SET @sql = 'CREATE TABLE ##T1 (Col1 varchar(20))'
EXEC(@sql)
INSERT INTO ##T1 (Col1) VALUES ('This will work.')
SELECT * FROM ##T1
Hope this helps, Jesse
If you are sure that you selected the Generic iOS device
and still can't see the option, then you simply have to restart Xcode.
This was the missing solution for me as a cordova developer with Xcode 11.2
The best way I found is:
!isNaN(Date.parse("some date test"))
//
!isNaN(Date.parse("22/05/2001")) // true
!isNaN(Date.parse("blabla")) // false
This might be more desirable, that is use float instead
SELECT fullName, CAST(totalBal as float) totalBal FROM client_info ORDER BY totalBal DESC
Here is my solution. Use [ExportModelStateToTempData] / [ImportModelStateFromTempData] is uncomfortable in my opinion.
~/Views/Home/Error.cshtml:
@{
ViewBag.Title = "Error";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Error</h2>
<hr/>
<div style="min-height: 400px;">
@Html.ValidationMessage("Error")
<br />
<br />
<button onclick="Error_goBack()" class="k-button">Go Back</button>
<script>
function Error_goBack() {
window.history.back()
}
</script>
</div>
~/Controllers/HomeController.sc:
public class HomeController : BaseController
{
public ActionResult Index()
{
return View();
}
public ActionResult Error()
{
return this.View();
}
...
}
~/Controllers/BaseController.sc:
public class BaseController : Controller
{
public BaseController() { }
protected override void OnActionExecuted(ActionExecutedContext filterContext)
{
if (filterContext.Result is ViewResult)
{
if (filterContext.Controller.TempData.ContainsKey("Error"))
{
var modelState = filterContext.Controller.TempData["Error"] as ModelState;
filterContext.Controller.ViewData.ModelState.Merge(new ModelStateDictionary() { new KeyValuePair<string, ModelState>("Error", modelState) });
filterContext.Controller.TempData.Remove("Error");
}
}
if ((filterContext.Result is RedirectResult) || (filterContext.Result is RedirectToRouteResult))
{
if (filterContext.Controller.ViewData.ModelState.ContainsKey("Error"))
{
filterContext.Controller.TempData["Error"] = filterContext.Controller.ViewData.ModelState["Error"];
}
}
base.OnActionExecuted(filterContext);
}
}
~/Controllers/MyController.sc:
public class MyController : BaseController
{
public ActionResult Index()
{
return View();
}
public ActionResult Details(int id)
{
if (id != 5)
{
ModelState.AddModelError("Error", "Specified row does not exist.");
return RedirectToAction("Error", "Home");
}
else
{
return View("Specified row exists.");
}
}
}
I wish you successful projects ;-)
User JQuery is EmptyObject to check whether array is contains elements or not.
var testArray=[1,2,3,4,5];
var testArray1=[];
console.log(jQuery.isEmptyObject(testArray)); //false
console.log(jQuery.isEmptyObject(testArray1)); //true
__all__
affects from <module> import *
statements.
Consider this example:
foo
+-- bar.py
+-- __init__.py
In foo/__init__.py
:
(Implicit) If we don't define __all__
, then from foo import *
will only import names defined in foo/__init__.py
.
(Explicit) If we define __all__ = []
, then from foo import *
will import nothing.
(Explicit) If we define __all__ = [ <name1>, ... ]
, then from foo import *
will only import those names.
Note that in the implicit case, python won't import names starting with _
. However, you can force importing such names using __all__
.
You can view the Python document here.
If you just want to have your header font a little bit bigger then the rest, you can use ScaleTransform. so you do not depend on the real fontsize.
<TextBlock x:Name="headerText" Text="Lorem ipsum dolor">
<TextBlock.LayoutTransform>
<ScaleTransform ScaleX="1.1" ScaleY="1.1" />
</TextBlock.LayoutTransform>
</TextBlock>
At first if you want to hide div element with id = "abc" on load and then toggle between hide and show using a button with id = "btn" then,
$(document).ready(function() {
$("#abc").hide();
$("#btn").click(function() {
$("#abc").toggle();
});
});
Alternatively, you can give the "full location" to the database in your queries a la:
SELECT photo_id FROM [my database name].photogallery;
If using one more often than others, use USE
. Even if you do, you can still use the database.table
syntax.
Since the SERVICE_USER table is not a pure join table, but has additional functional fields (blocked), you must map it as an entity, and decompose the many to many association between User and Service into two OneToMany associations : One User has many UserServices, and one Service has many UserServices.
You haven't shown us the most important part : the mapping and initialization of the relationships between your entities (i.e. the part you have problems with). So I'll show you how it should look like.
If you make the relationships bidirectional, you should thus have
class User {
@OneToMany(mappedBy = "user")
private Set<UserService> userServices = new HashSet<UserService>();
}
class UserService {
@ManyToOne
@JoinColumn(name = "user_id")
private User user;
@ManyToOne
@JoinColumn(name = "service_code")
private Service service;
@Column(name = "blocked")
private boolean blocked;
}
class Service {
@OneToMany(mappedBy = "service")
private Set<UserService> userServices = new HashSet<UserService>();
}
If you don't put any cascade on your relationships, then you must persist/save all the entities. Although only the owning side of the relationship (here, the UserService side) must be initialized, it's also a good practice to make sure both sides are in coherence.
User user = new User();
Service service = new Service();
UserService userService = new UserService();
user.addUserService(userService);
userService.setUser(user);
service.addUserService(userService);
userService.setService(service);
session.save(user);
session.save(service);
session.save(userService);
innerHTML
is a string representing the contents of the element.
You want to modify the element itself. Drop the .innerHTML
part.
In my specific scenario i wanted to skip applying common styles to a specific part of the page, better illustrated like this:
<body class='common-styles'>
<div id='header'>Wants common styles</div>
<div id='container'>Does NOT want common styles</div>
<div id='footer'>Wants common styles</div>
</body>
After messing with CSS reset which didn't bring much success (mainly because of rules precedence and complex stylesheet hierarchy), brought up ubiquitous jQuery to the rescue, which did the job very quickly and reasonably dirty:
$(function() {
$('body').removeClass('common-styles');
$('#header,#footer').addClass('common-styles');
});
(Now tell how evil it is to use JS to deal with CSS :-) )
The keyword for Oracle PL/SQL is "ELSIF" ( no extra "E"), not ELSEIF (yes, confusing and stupid)
declare
var_number number;
begin
var_number := 10;
if var_number > 100 then
dbms_output.put_line(var_number||' is greater than 100');
elsif var_number < 100 then
dbms_output.put_line(var_number||' is less than 100');
else
dbms_output.put_line(var_number||' is equal to 100');
end if;
end;
As Jakob S suggested in his answer, Kernel#Float can be used to validate numericality of the string, only thing that I can add is one-liner version of that, without using rescue
block to control flow (which is considered as a bad practice sometimes)
Float(my_string, exception: false).present?
Destroying a PHP Session
A PHP session can be destroyed by session_destroy() function. This function does not need any argument and a single call can destroy all the session variables. If you want to destroy a single session variable then you can use unset() function to unset a session variable.
Here is the example to unset a single variable
<?php unset($_SESSION['counter']); ?>
Here is the call which will destroy all the session variables
<?php session_destroy(); ?>
The only information currently available is that Apple Pay will be available in ios8, but that doesn't shed any light on whether RFID tags or rather NFC tags specifically will be able to be detected/read.
IMO it would be a shortsighted move not to allow that possibility, but really the money is in Apple Pay, not necessarily in allowing developers access to those features - we've seen it before with tethering, Bluetooth SPP, and diminished access to certain functions.
...but then again, it's been about 5 hours since the first announcement.
It works in Python too:
>>> 1+\
2+\
3
6
>>> (1+
2+
3)
6
I've found the following combination that works fine for positive and negative numbers (43787200020 is transformed to 43.787.200,02 K)
[>=1000] #.##0,#0. "K";#.##0,#0. "K"
This is a basic example of how to get the creation date of a file in Java
, using BasicFileAttributes
class:
Path path = Paths.get("C:\\Users\\jorgesys\\workspaceJava\\myfile.txt");
BasicFileAttributes attr;
try {
attr = Files.readAttributes(path, BasicFileAttributes.class);
System.out.println("Creation date: " + attr.creationTime());
//System.out.println("Last access date: " + attr.lastAccessTime());
//System.out.println("Last modified date: " + attr.lastModifiedTime());
} catch (IOException e) {
System.out.println("oops error! " + e.getMessage());
}
A simple way of doing this is via nargin
(N arguments in). The downside is you have to make sure that your argument list and the nargin checks match.
It is worth remembering that all inputs are optional, but the functions will exit with an error if it calls a variable which is not set. The following example sets defaults for b
and c
. Will exit if a
is not present.
function [ output_args ] = input_example( a, b, c )
if nargin < 1
error('input_example : a is a required input')
end
if nargin < 2
b = 20
end
if nargin < 3
c = 30
end
end
If you are using the pass password manager, you can use the module passwordstore, which makes this very easy.
Let's say you saved your user's sudo password in pass as
Server1/User
Then you can use the decrypted value like so
{{ lookup('community.general.passwordstore', 'Server1/User')}}"
I use it in my inventory:
---
servers:
hosts:
server1:
ansible_become_pass: "{{ lookup('community.general.passwordstore', 'Server1/User')}}"
Note that you should be running gpg-agent so that you won't see a pinentry prompt every time a 'become' task is run.
For future visitors: In the new HttpClient
(Angular 4.3+), the response
object is JSON by default, so you don't need to do response.json().data
anymore. Just use response
directly.
Example (modified from the official documentation):
import { HttpClient } from '@angular/common/http';
@Component(...)
export class YourComponent implements OnInit {
// Inject HttpClient into your component or service.
constructor(private http: HttpClient) {}
ngOnInit(): void {
this.http.get('https://api.github.com/users')
.subscribe(response => console.log(response));
}
}
Don't forget to import it and include the module under imports in your project's app.module.ts:
...
import { HttpClientModule } from '@angular/common/http';
@NgModule({
imports: [
BrowserModule,
// Include it under 'imports' in your application module after BrowserModule.
HttpClientModule,
...
],
...
I know this is a little late, but my favoured method for doing this is netcat
, as you get exactly what curl
sent; this can differ from the --trace
or --trace-ascii
options which won't show non-ASCII characters properly (they just show as dots or need to be decoded).
You can do this as very easily by opening two terminal windows, in the first type:
nc -l localhost 12345
This opens a listening process on port 12345 of your local machine.
In the second terminal window enter your curl command, for example:
curl --form 'foo=bar' localhost:12345
In the first terminal window you will see exactly what curl sent in the request.
Now of course nc
won't send anything in response (unless you type it in yourself), so you will need to interrupt the curl command (control-c) and repeat the process for each test.
However, this is a useful option for simply debugging your request, as you're not involving a round-trip anywhere, or producing bogus, iterative requests somewhere until you get it right; once you're happy with the command, simply redirect it to a valid URL and you're good to go.
You can do the same for any cURL library as well, simply edit your request to point to the local nc
listener until you're happy with it.
Nginx prefers prefix-based location matches (not involving regular expression), that's why in your code block, /stash redirects are going to /.
The algorithm used by Nginx to select which location to use is described thoroughly here: https://www.digitalocean.com/community/tutorials/understanding-nginx-server-and-location-block-selection-algorithms#matching-location-blocks
Full Example:
<table border="1" style="width:100%;">
<tr>
<td>ABC</td>
<td>ABC</td>
<td>ABC</td>
<td>ABC</td>
</tr>
<tr>
<td>Item 1</td>
<td>Item 1</td>
<td>
<table border="1" style="width: 100%;">
<tr>
<td>Name 1</td>
<td>Price 1</td>
</tr>
<tr>
<td>Name 2</td>
<td>Price 2</td>
</tr>
<tr>
<td>Name 3</td>
<td>Price 3</td>
</tr>
</table>
</td>
<td>Item 1</td>
</tr>
<tr>
<td>Item 2</td>
<td>Item 2</td>
<td>Item 2</td>
<td>Item 2</td>
</tr>
<tr>
<td>Item 3</td>
<td>Item 3</td>
<td>Item 3</td>
<td>Item 3</td>
</tr>
</table>
_x000D_
We can simply connect to the database like this:
uid=username;pwd=password;database=databasename;server=servername
For example:
string connectionString = @"uid=spacecraftU1;pwd=Appolo11;
database=spacecraft_db;
server=DESKTOP-99K0FRS\\PRANEETHDB";
SqlConnection con = new SqlConnection(connectionString);
SVG would be easier for you, since selection and moving it around is already built in. SVG objects are DOM objects, so they have "click" handlers, etc.
DIVs are okay but clunky and have awful performance loading at large numbers.
Canvas has the best performance hands-down, but you have to implement all concepts of managed state (object selection, etc) yourself, or use a library.
HTML5 Canvas is simply a drawing surface for a bit-map. You set up to draw (Say with a color and line thickness), draw that thing, and then the Canvas has no knowledge of that thing: It doesn't know where it is or what it is that you've just drawn, it's just pixels. If you want to draw rectangles and have them move around or be selectable then you have to code all of that from scratch, including the code to remember that you drew them.
SVG on the other hand must maintain references to each object that it renders. Every SVG/VML element you create is a real element in the DOM. By default this allows you to keep much better track of the elements you create and makes dealing with things like mouse events easier by default, but it slows down significantly when there are a large number of objects
Those SVG DOM references mean that some of the footwork of dealing with the things you draw is done for you. And SVG is faster when rendering really large objects, but slower when rendering many objects.
A game would probably be faster in Canvas. A huge map program would probably be faster in SVG. If you do want to use Canvas, I have some tutorials on getting movable objects up and running here.
Canvas would be better for faster things and heavy bitmap manipulation (like animation), but will take more code if you want lots of interactivity.
I've run a bunch of numbers on HTML DIV-made drawing versus Canvas-made drawing. I could make a huge post about the benefits of each, but I will give some of the relevant results of my tests to consider for your specific application:
I made Canvas and HTML DIV test pages, both had movable "nodes." Canvas nodes were objects I created and kept track of in Javascript. HTML nodes were movable Divs.
I added 100,000 nodes to each of my two tests. They performed quite differently:
The HTML test tab took forever to load (timed at slightly under 5 minutes, chrome asked to kill the page the first time). Chrome's task manager says that tab is taking up 168MB. It takes up 12-13% CPU time when I am looking at it, 0% when I am not looking.
The Canvas tab loaded in one second and takes up 30MB. It also takes up 13% of CPU time all of the time, regardless of whether or not one is looking at it. (2013 edit: They've mostly fixed that)
Dragging on the HTML page is smoother, which is expected by the design, since the current setup is to redraw EVERYTHING every 30 milliseconds in the Canvas test. There are plenty of optimizations to be had for Canvas for this. (canvas invalidation being the easiest, also clipping regions, selective redrawing, etc.. just depends on how much you feel like implementing)
There is no doubt you could get Canvas to be faster at object manipulation as the divs in that simple test, and of course far faster in the load time. Drawing/loading is faster in Canvas and has far more room for optimizations, too (ie, excluding things that are off-screen is very easy).
I have Notepad++ v6.8.8
Find: [([a-zA-Z])]
Replace: [\'\1\']
Will produce: $array[XYZ] => $array['XYZ']
To really get the latest revision ("head revision") number on your remote respository, use this:
svn info -r 'HEAD' | grep Revision | egrep -o "[0-9]+"
Outputs for example:
35669
Same problem in VS 2013
I added in Web.config :
<add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
It worked like a charm.
I found it on page: http://www.programmer.bz/Home/tabid/115/asp_net_sql/281/The-type-or-namespace-name-Objects-does-not-exist-in-the-namespace-SystemData.aspx
if in multiple class you want to change additional operation in perticular class that show in below example
$('.like').click(function(){
var like= $(this).text();
$(this).text(+like + +1);
});
You should also mind the references to other objects.
If the table was highly referenced by other tables than it’s probably also highly referenced by other objects such as views, stored procedures, functions and more.
I’d really recommend GUI tool such as ‘view dependencies’ dialog in SSMS or free tool like ApexSQL Search for this because searching for dependencies in other objects can be error prone if you want to do it only with SQL.
If SQL is the only option you could try doing it like this.
select O.name as [Object_Name], C.text as [Object_Definition]
from sys.syscomments C
inner join sys.all_objects O ON C.id = O.object_id
where C.text like '%table_name%'
string s2 = s1.Replace(",", ",\r\n");
if you use sass, you can try this
&::-webkit-scrollbar {
}
Eclipse has got the concept of incremental builds.This is incredibly useful as it saves a lot of time.
How is this Useful
Say you just changed a single .java file. The incremental builders will be able to compile the code without having to recompile everything(which will take more time).
Now what's the problem with Maven Plugins
Most of the maven plugins aren't designed for incremental builds and hence it creates trouble for m2e. m2e doesn't know if the plugin goal is something which is crucial or if it is irrelevant. If it just executes every plugin when a single file changes, it's gonna take lots of time.
This is the reason why m2e relies on metadata information to figure out how the execution should be handled. m2e has come up with different options to provide this metadata information and the order of preference is as below(highest to lowest)
1,2 refers to specifying pluginManagement section in the tag of your pom file or any of it's parents. M2E reads this configuration to configure the project.Below snippet instructs m2e to ignore the jslint
and compress
goals of the yuicompressor-maven-plugin
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<versionRange>[1.0,)</versionRange>
<goals>
<goal>compress</goal>
<goal>jslint</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
3) In case you don't prefer polluting your pom file with this metadata, you can store this in an external XML file(option 3). Below is a sample mapping file which instructs m2e to ignore the jslint
and compress
goals of the yuicompressor-maven-plugin
<?xml version="1.0" encoding="UTF-8"?>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<versionRange>[1.0,)</versionRange>
<goals>
<goal>compress</goal>
<goal>jslint</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore/>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
4) In case you don't like any of these 3 options, you can use an m2e connector(extension) for the maven plugin.The connector will in turn provide the metadata to m2e. You can see an example of the metadata information within a connector at this link . You might have noticed that the metadata refers to a configurator. This simply means that m2e will delegate the responsibility to that particular java class supplied by the extension author.The configurator can configure the project(like say add additional source folders etc) and decide whether to execute the actual maven plugin during an incremental build(if not properly managed within the configurator, it can lead to endless project builds)
Refer these links for an example of the configuratior(link1,link2). So in case the plugin is something which can be managed via an external connector then you can install it. m2e maintains a list of such connectors contributed by other developers.This is known as the discovery catalog. m2e will prompt you to install a connector if you don't already have any lifecycle mapping metadata for the execution through any of the options(1-6) and the discovery catalog has got some extension which can manage the execution.
The below image shows how m2e prompts you to install the connector for the build-helper-maven-plugin. .
5)m2e encourages the plugin authors to support incremental build and supply lifecycle mapping within the maven-plugin itself.This would mean that users won't have to use any additional lifecycle mappings or connectors.Some plugin authors have already implemented this
6) By default m2e holds the lifecycle mapping metadata for most of the commonly used plugins like the maven-compiler-plugin and many others.
Now back to the question :You can probably just provide an ignore life cycle mapping in 1, 2 or 3 for that specific goal which is creating trouble for you.
Both answers were good so I moved them in to a directive so that it is reusable and a second scope variable doesn't have to be defined.
Here is the fiddle if you want to see it implemented
Below is the directive:
var uniqueItems = function (data, key) {
var result = [];
for (var i = 0; i < data.length; i++) {
var value = data[i][key];
if (result.indexOf(value) == -1) {
result.push(value);
}
}
return result;
};
myApp.filter('groupBy',
function () {
return function (collection, key) {
if (collection === null) return;
return uniqueItems(collection, key);
};
});
Then it can be used as follows:
<div ng-repeat="team in players|groupBy:'team'">
<b>{{team}}</b>
<li ng-repeat="player in players | filter: {team: team}">{{player.name}}</li>
</div>
-- c#.net
NORMALIZE this.WindowState = FormWindowState.Normal;
this.WindowState = FormWindowState.Minimized;
move c:\Sourcefoldernam\*.* e:\destinationFolder
^ This did not work for me for some reason
But when I tried using quotation marks, it suddenly worked:
move "c:\Sourcefoldernam\*.*" "e:\destinationFolder"
I think its because my directory had spaces in one of the folders. So if it doesn't work for you, try with quotation marks!
For me, created an empty bootstrap.css.map together with bootstrap.css and the error stopped.
On CentOS EL 6 and perhaps on earlier versions there is one way to get into this same mess.
Install CentOS EL6 with a minimal installation. For example I used kickstart to install the following:
%packages
@core
acpid
bison
cmake
dhcp-common
flex
gcc
gcc-c++
git
libaio-devel
make
man
ncurses-devel
perl
ntp
ntpdate
pciutils
tar
tcpdump
wget
%end
You will find that one of the dependencies of the above list is mysql-libs
. I found that my system has a default my.cnf
in /etc
and this contains:
[mysqld]
dataddir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
When you build from the Generic Linux (Architecture Independent), Compressed TAR Archive
your default data directory is /usr/local/mysql/data
which conflicts with the /etc/my.cnf
already present which defines datadir=/var/lib/mysql
. Also the pid-file
defined in the same file does not have permissions for the mysql user/group to write to it in /var/run/mysqld
.
A quick remedy is to mv /etc/my.cnf /etc/my.cnf.old
which should get your generic source procedure working.
Of course the experience is different of you use the source RPMs.
Usually (same as I do in mysql/postgres) I stores dates in int(mysql/post) or text(sqlite) to store them in the timestamp format.
Then I will convert them into Date objects and perform actions based on user TimeZone
If the data has column and index labels that you want to preserve, there are a few options.
Example data:
>>> df = pd.DataFrame([[1,2,3],[3,4,5]], \
columns=('first', 'second', 'third'), \
index=('alpha', 'beta'))
>>> df
first second third
alpha 1 2 3
beta 3 4 5
The tolist()
method described in other answers is useful but yields only the core data - which may not be enough, depending on your needs.
>>> df.values.tolist()
[[1, 2, 3], [3, 4, 5]]
One approach is to convert the DataFrame
to json using df.to_json()
and then parse it again. This is cumbersome but does have some advantages, because the to_json()
method has some useful options.
>>> df.to_json()
{
"first":{"alpha":1,"beta":3},
"second":{"alpha":2,"beta":4},"third":{"alpha":3,"beta":5}
}
>>> df.to_json(orient='split')
{
"columns":["first","second","third"],
"index":["alpha","beta"],
"data":[[1,2,3],[3,4,5]]
}
Cumbersome but may be useful.
The good news is that it's pretty straightforward to build lists for the columns and rows:
>>> columns = [df.index.name] + [i for i in df.columns]
>>> rows = [[i for i in row] for row in df.itertuples()]
This yields:
>>> print(f"columns: {columns}\nrows: {rows}")
columns: [None, 'first', 'second', 'third']
rows: [['alpha', 1, 2, 3], ['beta', 3, 4, 5]]
If the None
as the name of the index is bothersome, rename it:
df = df.rename_axis('stage')
Then:
>>> columns = [df.index.name] + [i for i in df.columns]
>>> print(f"columns: {columns}\nrows: {rows}")
columns: ['stage', 'first', 'second', 'third']
rows: [['alpha', 1, 2, 3], ['beta', 3, 4, 5]]
Since there are no events available to signal when the socket is disconnected, you will have to poll it at a frequency that is acceptable to you.
Using this extension method, you can have a reliable method to detect if a socket is disconnected.
static class SocketExtensions
{
public static bool IsConnected(this Socket socket)
{
try
{
return !(socket.Poll(1, SelectMode.SelectRead) && socket.Available == 0);
}
catch (SocketException) { return false; }
}
}
This works nice, it's fast, works with multiple documents and doesn't require populating rand
field, which will eventually populate itself:
// Install packages:
// npm install mongodb async
// Add index in mongo:
// db.ensureIndex('mycollection', { rand: 1 })
var mongodb = require('mongodb')
var async = require('async')
// Find n random documents by using "rand" field.
function findAndRefreshRand (collection, n, fields, done) {
var result = []
var rand = Math.random()
// Append documents to the result based on criteria and options, if options.limit is 0 skip the call.
var appender = function (criteria, options, done) {
return function (done) {
if (options.limit > 0) {
collection.find(criteria, fields, options).toArray(
function (err, docs) {
if (!err && Array.isArray(docs)) {
Array.prototype.push.apply(result, docs)
}
done(err)
}
)
} else {
async.nextTick(done)
}
}
}
async.series([
// Fetch docs with unitialized .rand.
// NOTE: You can comment out this step if all docs have initialized .rand = Math.random()
appender({ rand: { $exists: false } }, { limit: n - result.length }),
// Fetch on one side of random number.
appender({ rand: { $gte: rand } }, { sort: { rand: 1 }, limit: n - result.length }),
// Continue fetch on the other side.
appender({ rand: { $lt: rand } }, { sort: { rand: -1 }, limit: n - result.length }),
// Refresh fetched docs, if any.
function (done) {
if (result.length > 0) {
var batch = collection.initializeUnorderedBulkOp({ w: 0 })
for (var i = 0; i < result.length; ++i) {
batch.find({ _id: result[i]._id }).updateOne({ rand: Math.random() })
}
batch.execute(done)
} else {
async.nextTick(done)
}
}
], function (err) {
done(err, result)
})
}
// Example usage
mongodb.MongoClient.connect('mongodb://localhost:27017/core-development', function (err, db) {
if (!err) {
findAndRefreshRand(db.collection('profiles'), 1024, { _id: true, rand: true }, function (err, result) {
if (!err) {
console.log(result)
} else {
console.error(err)
}
db.close()
})
} else {
console.error(err)
}
})
ps. How to find random records in mongodb question is marked as duplicate of this question. The difference is that this question asks explicitly about single record as the other one explicitly about getting random documents.
Just to add to the confusion, I've been working on a simple text editor using a TextArea element in an HTML page in a browser. In anticipation of compatibility woes with respect to CR/LF, I wrote the code to check the platform, and use whichever newline convention was applicable to the platform.
However, I discovered something interesting when checking the actual characters contained in the TextArea, via a small JavaScript function that generates the hex data corresponding to the characters.
For the test, I typed in the following text:
Hello, World[enter]
Goodbye, Cruel World[enter]
When I examined the text data, the byte sequence I obtained was this:
48 65 6c 6c 6f 2c 20 57 6f 72 6c 64 0a 47 6f 6f 64 62 79 65 2c 20 43 72 75 65 6c 20 57 6f 72 6c 64 0a
Now, most people looking at this, and seeing 0a but no 0d bytes, would think that this output was obtained on a Unix/Linux platform. But, here's the rub: this sequence I obtained in Google Chrome on Windows 7 64-bit.
So, if you're using a TextArea element and examining the text, CHECK the output as I've done above, to make sure what actual character bytes are returned from your TextArea. I've yet to see if this differs on other platforms or other browsers, but it's worth bearing in mind if you're performing text processing via JavaScript, and you need to make that text processing platform independent.
The conventions covered in above posts apply to console output, but HTML elements, it appears, adhere to the UNIX/Linux convention. Unless someone discovers otherwise on a different platform/browser.
I suggest you look into getting composer
. https://getcomposer.org
Composer makes getting third-party libraries a LOT easier and using a single autoloader for all of them. It also standardizes on where all your dependencies are located, along with some automatization capabilities.
Download https://getcomposer.org/composer.phar to C:\Inetpub\wwwroot\php
Delete your C:\Inetpub\wwwroot\php\PHPMailer\
directory.
Use composer.phar
to get the phpmailer package using the command line to execute
cd C:\Inetpub\wwwroot\php
php composer.phar require phpmailer/phpmailer
After it is finished it will create a C:\Inetpub\wwwroot\php\vendor
directory along with all of the phpmailer files and generate an autoloader.
Next in your main project configuration file you need to include the autoload file.
require_once 'C:\Inetpub\wwwroot\php\vendor\autoload.php';
The vendor\autoload.php
will include the information for you to use $mail = new \PHPMailer;
Additional information on the PHPMailer package can be found at https://packagist.org/packages/phpmailer/phpmailer
'\r'
means 'carriage return' and it is similar to '\n'
which means 'line break' or more commonly 'new line'
in the old days of typewriters, you would have to move the carriage that writes back to the start of the line, and move the line down in order to write onto the next line.
in the modern computer era we still have this functionality for multiple reasons. but mostly we use only '\n'
and automatically assume that we want to start writing from the start of the line, since it would not make much sense otherwise.
however, there are some times when we want to use JUST the '\r'
and that would be if i want to write something to an output, and the instead of going down to a new line and writing something else, i want to write something over what i already wrote, this is how many programs in linux or in windows command line are able to have 'progress' information that changes on the same line.
nowadays most systems use only the '\n'
to denote a newline. but some systems use both together.
you can see examples of this given in some of the other answers, but the most common are:
'\r\n'
'\r'
'\n'
and some other programs also have specific uses for them.
for more information about the history of these characters
I ran into this and eventually figured out it was because I was trying to use NSNumber
as dictionary keys, and property lists only allow strings as keys. The documentation for setObject:forKey:
doesn't mention this limitation, but the About Property Lists page that it links to does:
By convention, each Cocoa and Core Foundation object listed in Table 2-1 is called a property-list object. Conceptually, you can think of “property list” as being an abstract superclass of all these classes. If you receive a property list object from some method or function, you know that it must be an instance of one of these types, but a priori you may not know which type. If a property-list object is a container (that is, an array or dictionary), all objects contained within it must also be property-list objects. If an array or dictionary contains objects that are not property-list objects, then you cannot save and restore the hierarchy of data using the various property-list methods and functions. And although NSDictionary and CFDictionary objects allow their keys to be objects of any type, if the keys are not string objects, the collections are not property-list objects.
(Emphasis mine)
In TortiseSVN settings
right-click menu >> settings >> Saved data >> Authentication data [Clear]
The side effect is that it clears out all authentication data and you have to re-enter your own username/password.
if duplicate and ordering items are problem :
[i for i in a if not i in b or b.remove(i)]
a = [1,2,3,3,3,3,4]
b = [1,3]
result: [2, 3, 3, 3, 4]
We should always add scrollView.getPaddingBottom()
to match full scrollview height because some time scroll view has padding in xml file so that case its not going to work.
scrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
@Override
public void onScrollChanged() {
if (scrollView != null) {
View view = scrollView.getChildAt(scrollView.getChildCount()-1);
int diff = (view.getBottom()+scrollView.getPaddingBottom()-(scrollView.getHeight()+scrollView.getScrollY()));
// if diff is zero, then the bottom has been reached
if (diff == 0) {
// do stuff
}
}
}
});
If you are using the batch conversion, in the window click "options" in the "Batch conversion settings-output format" and tick the two boxes "save transparent color" (one under "PNG" and the other under "ICO").
Please try this simple function
var NanValue = function (entry) {
if(entry=="NaN") {
return 0.00;
} else {
return entry;
}
}
When filtering a DataFrame with string values, I find that the pyspark.sql.functions
lower
and upper
come in handy, if your data could have column entries like "foo" and "Foo":
import pyspark.sql.functions as sql_fun
result = source_df.filter(sql_fun.lower(source_df.col_name).contains("foo"))
As others have mentioned you need a users/show.json view, but there are options to consider for the templating language...
ERB
Works out of the box. Great for HTML, but you'll quickly find it's awful for JSON.
Good solution. Have to add a dependency and learn its DSL.
Same deal as RABL: Good solution. Have to add a dependency and learn its DSL.
Plain Ruby
Ruby is awesome at generating JSON and there's nothing new to learn as you can call to_json
on a Hash or an AR object. Simply register the .rb extension for templates (in an initializer):
ActionView::Template.register_template_handler(:rb, :source.to_proc)
Then create the view users/show.json.rb:
@user.to_json
For more info on this approach see http://railscasts.com/episodes/379-template-handlers
Because the compiler needs to see them in order to inline them. And headers files are the "components" which are commonly included in other translation units.
#include "file.h"
// Ok, now me (the compiler) can see the definition of that inline function.
// So I'm able to replace calls for the actual implementation.
You cannot display an application window/dialog through a Context that is not an Activity. Try passing a valid activity reference
EDIT: Note, this is if you have multiple tsconfig.json files in your typescript source. For my project we have each tsconfig.json file compile to a differently-named .js file. This makes watching every typescript file really easy.
I wrote a sweet bash script that finds all of your tsconfig.json files and runs them in the background, and then if you CTRL+C the terminal it will close all the running typescript watch commands.
This is tested on MacOS, but should work anywhere that BASH 3.2.57 is supported. Future versions may have changed some things, so be careful!
#!/bin/bash
# run "chmod +x typescript-search-and-compile.sh" in the directory of this file to ENABLE execution of this script
# then in terminal run "path/to/this/file/typescript-search-and-compile.sh" to execute this script
# (or "./typescript-search-and-compile.sh" if your terminal is in the folder the script is in)
# !!! CHANGE ME !!!
# location of your scripts root folder
# make sure that you do not add a trailing "/" at the end!!
# also, no spaces! If you have a space in the filepath, then
# you have to follow this link: https://stackoverflow.com/a/16703720/9800782
sr=~/path/to/scripts/root/folder
# !!! CHANGE ME !!!
# find all typescript config files
scripts=$(find $sr -name "tsconfig.json")
for s in $scripts
do
# strip off the word "tsconfig.json"
cd ${s%/*} # */ # this function gets incorrectly parsed by style linters on web
# run the typescript watch in the background
tsc -w &
# get the pid of the last executed background function
pids+=$!
# save it to an array
pids+=" "
done
# end all processes we spawned when you close this process
wait $pids
Helpful resources:
If you're using Angular's ng-repeat to populate the table hackel's jquery snippet will not work by placing it in the document load event. You'll need to run the snippet after angular has finished rendering the table.
To trigger an event after ng-repeat has rendered try this directive:
var app = angular.module('myapp', [])
.directive('onFinishRender', function ($timeout) {
return {
restrict: 'A',
link: function (scope, element, attr) {
if (scope.$last === true) {
$timeout(function () {
scope.$emit('ngRepeatFinished');
});
}
}
}
});
Complete example in angular: http://jsfiddle.net/ADukg/6880/
I got the directive from here: Use AngularJS just for routing purposes
The value for an annotation must be a compile time constant, so there is no simple way of doing what you are trying to do.
See also here: How to supply value to an annotation from a Constant java
It is possible to use some compile time tools (ant, maven?) to config it if the value is known before you try to run the program.
Put into css file:
html { background: url(images/bg.jpg) no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover; }
URL images/bg.jpg is your background image
This helped me: just wait about a minute or two.
Wait a few minutes, then retry your operation.
This works for me
msg.BodyFormat = MailFormat.Html;
and then you can use html in your body
msg.Body = "<em>It's great to use HTML in mail!!</em>"
Multiple Approch can be applied:
constructor(props) {
super(props);
this.state = {
value:''
}
}
<input type='text'
name='firstName'
value={this.state.value}
className="col-12"
onChange={this.onChange}
placeholder='Enter First name' />
[value, setValue] = useState('');
<input type='text'
name='firstName'
value={value}
className="col-12"
onChange={this.onChange}
placeholder='Enter First name' />
HOC.propTypes = {
value : PropTypes.string
}
HOC.efaultProps = {
value: ''
}
function HOC (){
return (<input type='text'
name='firstName'
value={this.props.value}
className="col-12"
onChange={this.onChange}
placeholder='Enter First name' />)
}
I had a similar problem, trying to capture a 'shift+click' but since I was using a third party control with a callback rather than the standard click
handler, I didn't have access to the event object and its associated e.shiftKey
.
I ended up handling the mouse down event to record the shift-ness and then using it later in my callback.
var shiftHeld = false;
$('#control').on('mousedown', function (e) { shiftHeld = e.shiftKey });
Posted just in case someone else ends up here searching for a solution to this problem.
df['Name']='abc'
will add the new column and set all rows to that value:
In [79]:
df
Out[79]:
Date, Open, High, Low, Close
0 01-01-2015, 565, 600, 400, 450
In [80]:
df['Name'] = 'abc'
df
Out[80]:
Date, Open, High, Low, Close Name
0 01-01-2015, 565, 600, 400, 450 abc
You can simply use Python standard library. Make a shallow copy of the original image as follows:
import copy
original_img = cv2.imread("foo.jpg")
clone_img = copy.copy(original_img)
After lots of research, I've come up with this answer, and I'm hereby putting it here as an answer for my own question, for reference:
Make sure that "Enable access for assistive devices" is checked in System Preferences>>Universal Access. It is required for the AppleScript to work. You may have to reboot after this change (it doesn't work otherwise on Mac OS X Server 10.4).
Create a R/W DMG. It must be larger than the result will be. In this example, the bash variable "size" contains the size in Kb and the contents of the folder in the "source" bash variable will be copied into the DMG:
hdiutil create -srcfolder "${source}" -volname "${title}" -fs HFS+ \
-fsargs "-c c=64,a=16,e=16" -format UDRW -size ${size}k pack.temp.dmg
Mount the disk image, and store the device name (you might want to use sleep for a few seconds after this operation):
device=$(hdiutil attach -readwrite -noverify -noautoopen "pack.temp.dmg" | \
egrep '^/dev/' | sed 1q | awk '{print $1}')
Store the background picture (in PNG format) in a folder called ".background" in the DMG, and store its name in the "backgroundPictureName" variable.
Use AppleScript to set the visual styles (name of .app must be in bash variable "applicationName", use variables for the other properties as needed):
echo '
tell application "Finder"
tell disk "'${title}'"
open
set current view of container window to icon view
set toolbar visible of container window to false
set statusbar visible of container window to false
set the bounds of container window to {400, 100, 885, 430}
set theViewOptions to the icon view options of container window
set arrangement of theViewOptions to not arranged
set icon size of theViewOptions to 72
set background picture of theViewOptions to file ".background:'${backgroundPictureName}'"
make new alias file at container window to POSIX file "/Applications" with properties {name:"Applications"}
set position of item "'${applicationName}'" of container window to {100, 100}
set position of item "Applications" of container window to {375, 100}
update without registering applications
delay 5
close
end tell
end tell
' | osascript
Finialize the DMG by setting permissions properly, compressing and releasing it:
chmod -Rf go-w /Volumes/"${title}"
sync
sync
hdiutil detach ${device}
hdiutil convert "/pack.temp.dmg" -format UDZO -imagekey zlib-level=9 -o "${finalDMGName}"
rm -f /pack.temp.dmg
On Snow Leopard, the above applescript will not set the icon position correctly - it seems to be a Snow Leopard bug. One workaround is to simply call close/open after setting the icons, i.e.:
..
set position of item "'${applicationName}'" of container window to {100, 100}
set position of item "Applications" of container window to {375, 100}
close
open
C++20 will add constexpr
strings and vectors
The following proposal has been accepted apparently: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0980r0.pdf and it adds constructors such as:
// 20.3.2.2, construct/copy/destroy
constexpr
basic_string() noexcept(noexcept(Allocator())) : basic_string(Allocator()) { }
constexpr
explicit basic_string(const Allocator& a) noexcept;
constexpr
basic_string(const basic_string& str);
constexpr
basic_string(basic_string&& str) noexcept;
in addition to constexpr versions of all / most methods.
There is no support as of GCC 9.1.0, the following fails to compile:
#include <string>
int main() {
constexpr std::string s("abc");
}
with:
g++-9 -std=c++2a main.cpp
with error:
error: the type ‘const string’ {aka ‘const std::__cxx11::basic_string<char>’} of ‘constexpr’ variable ‘s’ is not literal
std::vector
discussed at: Cannot create constexpr std::vector
Tested in Ubuntu 19.04.
Use %0A
(URL encoding) instead of \n
(C encoding).
as @Jörg W Mittag pointed out: in jruby, fix num size is always 8 bytes long. This code snippet shows the truth:
fmax = ->{
if RUBY_PLATFORM == 'java'
2**63 - 1
else
2**(0.size * 8 - 2) - 1
end
}.call
p fmax.class # Fixnum
fmax = fmax + 1
p fmax.class #Bignum
I found out this very simple method while experimenting: set the scrollTo
to the height of the div.
var myDiv = document.getElementById("myDiv");
window.scrollTo(0, myDiv.innerHeight);
This command loads class of Oracle jdbc driver to be available for DriverManager instance. After the class is loaded system can connect to Oracle using it. As an alternative you can use registerDriver method of DriverManager and pass it with instance of JDBC driver you need.
Stop, stop, stop.
This is not how Vim's tabs are designed to be used. In fact, they're misnamed. A better name would be "viewport" or "layout", because that's what a tab is—it's a different layout of windows of all of your existing buffers.
Trying to beat Vim into 1 tab == 1 buffer is an exercise in futility. Vim doesn't know or care and it will not respect it on all commands—in particular, anything that uses the quickfix buffer (:make
, :grep
, and :helpgrep
are the ones that spring to mind) will happily ignore tabs and there's nothing you can do to stop that.
Instead:
:set hidden
:bn
, :bp
, :b #
, :b name
, and ctrl-6
to switch between buffers. I like ctrl-6
myself (alone it switches to the previously used buffer, or #ctrl-6
switches to buffer number #
).:ls
to list buffers, or a plugin like MiniBufExpl or BufExplorer.The same error message results not only for null
but also for e.g. factor(0)
. In this case, the query must be if(length(element) > 0 & otherCondition)
or better check both cases with if(!is.null(element) & length(element) > 0 & otherCondition)
.
URL-encoded payload must be provided on the body
parameter of the http.NewRequest(method, urlStr string, body io.Reader)
method, as a type that implements io.Reader
interface.
Based on the sample code:
package main
import (
"fmt"
"net/http"
"net/url"
"strconv"
"strings"
)
func main() {
apiUrl := "https://api.com"
resource := "/user/"
data := url.Values{}
data.Set("name", "foo")
data.Set("surname", "bar")
u, _ := url.ParseRequestURI(apiUrl)
u.Path = resource
urlStr := u.String() // "https://api.com/user/"
client := &http.Client{}
r, _ := http.NewRequest(http.MethodPost, urlStr, strings.NewReader(data.Encode())) // URL-encoded payload
r.Header.Add("Authorization", "auth_token=\"XXXXXXX\"")
r.Header.Add("Content-Type", "application/x-www-form-urlencoded")
r.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))
resp, _ := client.Do(r)
fmt.Println(resp.Status)
}
resp.Status
is 200 OK
this way.
Sometimes, such a question can be asked at an interview.
For example, when you write:
int a = 2;
long b = 3;
a = a + b;
there is no automatic typecasting. In C++ there will not be any error compiling the above code, but in Java you will get something like Incompatible type exception
.
So to avoid it, you must write your code like this:
int a = 2;
long b = 3;
a += b;// No compilation error or any exception due to the auto typecasting
This line:
layout = (LinearLayout) findViewById(R.id.statsviewlayout);
Looks for the "statsviewlayout" id in your current 'contentview'. Now you've set that here:
setContentView(new GraphTemperature(getApplicationContext()));
And i'm guessing that new "graphTemperature" does not set anything with that id.
It's a common mistake to think you can just find any view with findViewById. You can only find a view that is in the XML (or appointed by code and given an id).
The nullpointer will be thrown because the layout you're looking for isn't found, so
layout.addView(buyButton);
Throws that exception.
addition: Now if you want to get that view from an XML, you should use an inflater:
layout = (LinearLayout) View.inflate(this, R.layout.yourXMLYouWantToLoad, null);
assuming that you have your linearlayout in a file called "yourXMLYouWantToLoad.xml"
Assuming alphanumeric words, you can use:
Search = ^([A-Za-z0-9]+)$
Replace = able:"\1"
Or, if you just want to highlight the lines and use "Replace All" & "In Selection" (with the same replace):
Search = ^(.+)$
^
points to the start of the line.
$
points to the end of the line.
\1
will be the source match within the parentheses.
In order to get the formula to work place the cursor inside the formula and press ctr+shift+enter and then it will work!
alter table table_name add primary key (col_name1, col_name2);
Subtract from another date object
var d = new Date();
d.setHours(d.getHours() - 2);
Referencing MSDN T-SQL DELETE (Example D):
DELETE FROM Table1
FROM Tabel1 t1
INNER JOIN Table2 t2 on t1.ID = t2.ID
"Default Namespace textbox in project properties is disabled" Same with me (VS 2010). I edited the project file ("xxx.csproj") and tweaked the item. That changed the default namespace.
As of year 2020, JetBrains suggests to commit the .idea
folder.
The JetBrains IDEs (webstorm, intellij, android studio, pycharm, clion, etc.) automatically add that folder to your git repository (if there's one).
Inside the folder .idea
, has been already created a .gitignore
, updated by the IDE itself to avoid to commit user related settings that may contains privacy/password data.
It is safe (and usually useful) to commit the .idea
folder.
Bulk imports seems to perform best if you can chunk your INSERT/UPDATE statements. A value of 10,000 or so has worked well for me on a table with only a few rows, YMMV...
You can use the below code to check whether gps provider and network providers are enabled or not.
LocationManager lm = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
boolean gps_enabled = false;
boolean network_enabled = false;
try {
gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch(Exception ex) {}
try {
network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch(Exception ex) {}
if(!gps_enabled && !network_enabled) {
// notify user
new AlertDialog.Builder(context)
.setMessage(R.string.gps_network_not_enabled)
.setPositiveButton(R.string.open_location_settings, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface paramDialogInterface, int paramInt) {
context.startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
})
.setNegativeButton(R.string.Cancel,null)
.show();
}
And in the manifest file, you will need to add the following permissions
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
Use either of these depending how you want backslashes in the shell variables handled (avar
is an awk variable, svar
is a shell variable):
awk -v avar="$svar" '... avar ...' file
awk 'BEGIN{avar=ARGV[1];ARGV[1]=""}... avar ...' "$svar" file
See http://cfajohnson.com/shell/cus-faq-2.html#Q24 for details and other options. The first method above is almost always your best option and has the most obvious semantics.
To loop from current record to the end:
While Me.CurrentRecord < Me.Recordset.RecordCount
' ... do something to current record
' ...
DoCmd.GoToRecord Record:=acNext
Wend
To check if it is possible to go to next record:
If Me.CurrentRecord < Me.Recordset.RecordCount Then
' ...
End If
sp_help tablename in sql server -- sp_help [ [ @objname = ] 'name' ]
desc tablename in oracle -- DESCRIBE { table-Name | view-Name }
Your problem is that at the moment your incoming_Cid
column defined as CHAR(1)
when it should be CHAR(34)
.
To fix this just issue this command to change your columns' length from 1 to 34
ALTER TABLE calls CHANGE incoming_Cid incoming_Cid CHAR(34);
Here is SQLFiddle demo
Use this code:
SELECT name FROM sqlite_master WHERE type='table' AND name='yourTableName';
If the returned array count is equal to 1 it means the table exists. Otherwise it does not exist.
You can try converting your image from tiff to PNG, here is how to do it:
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.PNGEncodeParam;
import com.sun.media.jai.codec.TIFFDecodeParam;
import java.awt.image.RenderedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import javaxt.io.Image;
public class ImgConvTiffToPng {
public static byte[] convert(byte[] tiff) throws Exception {
byte[] out = new byte[0];
InputStream inputStream = new ByteArrayInputStream(tiff);
TIFFDecodeParam param = null;
ImageDecoder dec = ImageCodec.createImageDecoder("tiff", inputStream, param);
RenderedImage op = dec.decodeAsRenderedImage(0);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
PNGEncodeParam jpgparam = null;
ImageEncoder en = ImageCodec.createImageEncoder("png", outputStream, jpgparam);
en.encode(op);
outputStream = (ByteArrayOutputStream) en.getOutputStream();
out = outputStream.toByteArray();
outputStream.flush();
outputStream.close();
return out;
}
const path = require('path');
const express = require('express');
const app = new express();
app.use(express.static('/media'));
app.get('/', (req, res) => {
res.sendFile(path.resolve(__dirname, 'media/page/', 'index.html'));
});
app.listen(4000, () => {
console.log('App listening on port 4000')
})
HTTP Servers tend to reject old browsers and systems.
The page Tech Blog (wh): Most Common User Agents reflects the user-agent property of your current browser in section "Your user agent is:", which can be applied to set the request property "User-Agent" of a java.net.URLConnection
or the system property "http.agent".
Simply this works!
// Set the array pointer to the last key
end($array);
// Store the last key
$lastkey = key($array);
foreach($array as $key => $element) {
....do array stuff
if ($lastkey === key($array))
echo 'THE LAST ELEMENT! '.$array[$lastkey];
}
Thank you @billynoah for your sorting out the end issue.
I faced this issue, and that is when a Bean (@Bean) was not instantiated properly as it was not given the correct parameters in my test class.
There is a ToArray() function on Values:
Foo[] arr = new Foo[dict.Count];
dict.Values.CopyTo(arr, 0);
But I don't think its efficient (I haven't really tried, but I guess it copies all these values to the array). Do you really need an Array? If not, I would try to pass IEnumerable:
IEnumerable<Foo> foos = dict.Values;
It means:
'O' (Python) objects
The first character specifies the kind of data and the remaining characters specify the number of bytes per item, except for Unicode, where it is interpreted as the number of characters. The item size must correspond to an existing type, or an error will be raised. The supported kinds are to an existing type, or an error will be raised. The supported kinds are:
'b' boolean
'i' (signed) integer
'u' unsigned integer
'f' floating-point
'c' complex-floating point
'O' (Python) objects
'S', 'a' (byte-)string
'U' Unicode
'V' raw data (void)
Another answer helps if need check type
s.
<?php
header('Content-Type: text/css');
?>
some selector {
background-color: <?php echo $my_colour_that_has_been_checked_to_be_a_safe_value; ?>;
}
int first = 3;
int mid = 4;
int last = 6;
//checks for the largest number using the Math.max(a,b) method
//for the second argument (b) you just use the same method to check which //value is greater between the second and the third
int largest = Math.max(first, Math.max(last, mid));
You can achieve this is to combine For XML Path and STUFF as follows:
SELECT (STUFF((
SELECT ', ' + StringValue
FROM Jira.customfieldvalue
WHERE CUSTOMFIELD = 12534
AND ISSUE = 19602
FOR XML PATH('')
), 1, 2, '')
) AS StringValue
select CONCAT(Name, '(',substr(occupation, 1, 1), ')') AS f1
from OCCUPATIONS
union
select temp.str AS f1 from
(select count(occupation) AS counts, occupation, concat('There are a total of ' ,count(occupation) ,' ', lower(occupation),'s.') As str from OCCUPATIONS group by occupation order by counts ASC, occupation ASC
) As temp
order by f1
For the UITextField text comparison I am using below code and working fine for me, let me know if you find any error.
if(txtUsername.text.isEmpty || txtPassword.text.isEmpty)
{
//Do some stuff
}
else if(txtUsername.text == "****" && txtPassword.text == "****")
{
//Do some stuff
}
In swift 4.1 and Xcode 9.4.1
Add UITextFieldDelegate to your class
class YourViewController: UIViewController, UITextFieldDelegate
Then write this code in your viewDidLoad()
mobileNoTF.delegate = self
Write this textfield delegate function
//MARK - UITextField Delegates
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
//For mobile numer validation
if textField == mobileNoTF {
let allowedCharacters = CharacterSet(charactersIn:"+0123456789 ")//Here change this characters based on your requirement
let characterSet = CharacterSet(charactersIn: string)
return allowedCharacters.isSuperset(of: characterSet)
}
return true
}
Apple's Technical Q&A QA1509 shows the following simple approach:
CFDataRef CopyImagePixels(CGImageRef inImage)
{
return CGDataProviderCopyData(CGImageGetDataProvider(inImage));
}
Use CFDataGetBytePtr
to get to the actual bytes (and various CGImageGet*
methods to understand how to interpret them).
What about 1.1E10, +1, -0, etc? Parsing all possible numbers is trickier than many people think. If you want to include as many numbers are possible you should use the to_number function in a PL/SQL function. From http://www.oracle-developer.net/content/utilities/is_number.sql:
CREATE OR REPLACE FUNCTION is_number (str_in IN VARCHAR2) RETURN NUMBER IS
n NUMBER;
BEGIN
n := TO_NUMBER(str_in);
RETURN 1;
EXCEPTION
WHEN VALUE_ERROR THEN
RETURN 0;
END;
/
pull = fetch + merge.
You need to commit what you have done before merging.
So pull after commit.
Use the following Imports
Imports System.Data.SqlClient
Imports System.Data.Sql
Public SQLConn As New SqlConnection With {.ConnectionString = "Server=Desktop1[enter image description here][1];Database=Infostudio; Trusted_Connection=true;"}
You can view loopback traffic live in Wireshark by having it read RawCap's output instantly. cmaynard describes this ingenious approach at the Wireshark forums. I will cite it here:
[...] if you want to view live traffic in Wireshark, you can still do it by running RawCap from one command-line and running Wireshark from another. Assuming you have cygwin's tail available, this could be accomplished using something like so:
cmd1: RawCap.exe -f 127.0.0.1 dumpfile.pcap
cmd2: tail -c +0 -f dumpfile.pcap | Wireshark.exe -k -i -
It requires cygwin's tail, and I could not find a way to do this with Windows' out-of-the-box tools. His approach works very fine for me and allows me to use all of Wiresharks filter capabilities on captured loopback traffic live.
There are many methods to do this using constraint widget of the activity.xml page of android studio.
Two most common methods are:
Swift 4:
NotificationCenter.default.addObserver( self, selector: #selector(ControllerClassName.keyboardWillShow(_:)),
name: Notification.Name.UIKeyboardWillShow,
object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(ControllerClassName.keyboardWillHide(_:)),
name: Notification.Name.UIKeyboardWillHide,
object: nil)
Next, adding method to stop listening for notifications when the object’s life ends:-
Then add the promised methods from above to the view controller:
deinit {
NotificationCenter.default.removeObserver(self)
}
func adjustKeyboardShow(_ open: Bool, notification: Notification) {
let userInfo = notification.userInfo ?? [:]
let keyboardFrame = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
let height = (keyboardFrame.height + 20) * (open ? 1 : -1)
scrollView.contentInset.bottom += height
scrollView.scrollIndicatorInsets.bottom += height
}
@objc func keyboardWillShow(_ notification: Notification) {
adjustKeyboardShow(true, notification: notification)
}
@objc func keyboardWillHide(_ notification: Notification) {
adjustKeyboardShow(false, notification: notification)
}
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <iostream>
#include <iomanip>
using namespace cv;
using namespace std;
int main(int argc, char** argv)
{
double data[4] = {-0.0000000077898273846583732, -0.03749374753019832, -0.0374787251930463, -0.000000000077893623846343843};
Mat src = Mat(1, 4, CV_64F, &data);
for(int i=0; i<4; i++)
cout << setprecision(3) << src.at<double>(0,i) << endl;
return 0;
}
OQ asked about static string
vs const
. Both have different use cases (although both are treated as static).
Use const only for truly constant values (e.g. speed of light - but even this varies depending on medium). The reason for this strict guideline is that the const value is substituted into the uses of the const in assemblies that reference it, meaning you can have versioning issues should the const change in its place of definition (i.e. it shouldn't have been a constant after all). Note this even affects private const
fields because you might have base and subclass in different assemblies and private fields are inherited.
Static fields are tied to the type they are declared within. They are used for representing values that need to be the same for all instances of a given type. These fields can be written to as many times as you like (unless specified readonly).
If you meant static readonly
vs const
, then I'd recommend static readonly
for almost all cases because it is more future proof.
Some may get a 403 with the method listed above using mod_rewrite. Another solution to rewite index.php out is as follows:
<IfModule mod_rewrite.c>
RewriteEngine On
# Put your installation directory here:
RewriteBase /
# Do not enable rewriting for files or directories that exist
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /index.php/$1 [L]
</IfModule>
This line in your app.php
, 'key' => env('APP_KEY', 'SomeRandomString'),
, is saying that the key for your application can be found in your .env
file on the line APP_KEY
.
Basically it tells Laravel to look for the key in the .env
file first and if there isn't one there then to use 'SomeRandomString'
.
When you use the php artisan key:generate
it will generate the new key to your .env
file and not the app.php
file.
As kotapeter said, your .env
will be inside your root Laravel directory and may be hidden; xampp/htdocs/laravel/blog
Just add || true
after the command where you want to ignore the error.
Targeting learner, who are novice to Java and/or Nested Classes
Nested classes can be either:
1. Static Nested classes.
2. Non Static Nested classes. (also known as Inner classes) =>Please remember this
1.Inner classes
Example:
class OuterClass {
/* some code here...*/
class InnerClass { }
/* some code here...*/
}
Inner classes are subsets of nested classes:
Specialty of Inner class:
2.Static Nested Classes:
Example:
class EnclosingClass {
static class Nested {
void someMethod() { System.out.println("hello SO"); }
}
}
Case 1:Instantiating a static nested class from a non-enclosing class
class NonEnclosingClass {
public static void main(String[] args) {
/*instantiate the Nested class that is a static
member of the EnclosingClass class:
*/
EnclosingClass.Nested n = new EnclosingClass.Nested();
n.someMethod(); //prints out "hello"
}
}
Case 2:Instantiating a static nested class from an enclosing class
class EnclosingClass {
static class Nested {
void anotherMethod() { System.out.println("hi again"); }
}
public static void main(String[] args) {
//access enclosed class:
Nested n = new Nested();
n.anotherMethod(); //prints out "hi again"
}
}
Specialty of Static classes:
Conclusion:
Question: What is the main difference between a inner class and a static nested class in Java?
Answer: just go through specifics of each class mentioned above.
The least complicated, most straight-forward way of doing this is by simply wrapping your main query with the pivot in a common table expression, then grouping/aggregating.
WITH PivotCTE AS
(
select * from mytransactions
pivot (sum (totalcount) for country in ([Australia], [Austria])) as pvt
)
SELECT
numericmonth,
chardate,
SUM(totalamount) AS totalamount,
SUM(ISNULL(Australia, 0)) AS Australia,
SUM(ISNULL(Austria, 0)) Austria
FROM PivotCTE
GROUP BY numericmonth, chardate
The ISNULL
is to stop a NULL
value from nullifying the sum (because NULL
+ any value = NULL
)
I think you can also call Refresh()
.
Try the solution using the FileReader
class:
function getBase64(file) {
var reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function () {
console.log(reader.result);
};
reader.onerror = function (error) {
console.log('Error: ', error);
};
}
var file = document.querySelector('#files > input[type="file"]').files[0];
getBase64(file); // prints the base64 string
Notice that .files[0]
is a File
type, which is a sublcass of Blob
. Thus it can be used with FileReader
.
See the complete working example.
You need a bindingsource object to act as an intermediary and assist in the binding. Then instead of updating the user interface, update the underlining model.
var model = (Fruit) bindingSource1.DataSource;
model.FruitType = "oranges";
bindingSource.ResetBindings();
Read up on BindingSource and simple data binding for Windows Forms.
ActiveModel::Dirty
didn't work for me because the @model.update_attributes()
hid the changes. So this is how I detected changes it in an update
method in a controller:
def update
@model = Model.find(params[:id])
detect_changes
if @model.update_attributes(params[:model])
do_stuff if attr_changed?
end
end
private
def detect_changes
@changed = []
@changed << :attr if @model.attr != params[:model][:attr]
end
def attr_changed?
@changed.include :attr
end
If you're trying to detect a lot of attribute changes it could get messy though. Probably shouldn't do this in a controller, but meh.
if you have several select2
and just want to resize one. do this:
get id to your element:
<div id="skills">
<select class="select2" > </select>
</div>
and add this css:
#skills > span >span >span>.select2-selection__rendered{
line-height: 80px !important;
}
default LocalDateTime getDateFromLong(long timestamp) {
try {
return LocalDateTime.ofInstant(Instant.ofEpochMilli(timestamp), ZoneOffset.UTC);
} catch (DateTimeException tdException) {
// throw new
}
}
default Long getLongFromDateTime(LocalDateTime dateTime) {
return dateTime.atOffset(ZoneOffset.UTC).toInstant().toEpochMilli();
}
You could also use a RewriteRule if you wanted the ability to template match and redirect urls.
# Copy the certificate into the directory Java_home\Jre\Lib\Security
# Change your directory to Java_home\Jre\Lib\Security>
# Import the certificate to a trust store.
keytool -import -alias ca -file somecert.cer -keystore cacerts -storepass changeit [Return]
Trust this certificate: [Yes]
changeit is the default truststore password
Unfortunately HTML5 does not provide an out-of-the-box way to do that.
However, using jQuery, you can easily control if a checkbox group has at least one checked element.
Consider the following DOM snippet:
<div class="checkbox-group required">
<input type="checkbox" name="checkbox_name[]">
<input type="checkbox" name="checkbox_name[]">
<input type="checkbox" name="checkbox_name[]">
<input type="checkbox" name="checkbox_name[]">
</div>
You can use this expression:
$('div.checkbox-group.required :checkbox:checked').length > 0
which returns true
if at least one element is checked.
Based on that, you can implement your validation check.
interface:
In general, an interface exposes a contract without exposing the underlying implementation details. In Object Oriented Programming, interfaces define abstract types that expose behavior, but contain no logic. Implementation is defined by the class or type that implements the interface.
@interface : (Annotation type)
Take the below example, which has a lot of comments:
public class Generation3List extends Generation2List {
// Author: John Doe
// Date: 3/17/2002
// Current revision: 6
// Last modified: 4/12/2004
// By: Jane Doe
// Reviewers: Alice, Bill, Cindy
// class code goes here
}
Instead of this, you can declare an annotation type
@interface ClassPreamble {
String author();
String date();
int currentRevision() default 1;
String lastModified() default "N/A";
String lastModifiedBy() default "N/A";
// Note use of array
String[] reviewers();
}
which can then annotate a class as follows:
@ClassPreamble (
author = "John Doe",
date = "3/17/2002",
currentRevision = 6,
lastModified = "4/12/2004",
lastModifiedBy = "Jane Doe",
// Note array notation
reviewers = {"Alice", "Bob", "Cindy"}
)
public class Generation3List extends Generation2List {
// class code goes here
}
PS: Many annotations replace comments in code.
Reference: http://docs.oracle.com/javase/tutorial/java/annotations/declaring.html
I don't work in WordPress much, but for forms outside of WordPress, this works well.
location = ""; // Declare variable
if($_POST) {
if(!$_POST["location"]) {
$error .= "Location is required.<br />"; // If not selected, add string to error message
}else{
$location = $_POST["location"]; // If selected, assign to variable
}
<select name="location">
<option value="0">Choose...</option>
<option value="1" <?php if (isset($location) && $location == "1") echo "selected" ?>>location 1</option>
<option value="2" <?php if (isset($location) && $location == "2") echo "selected" ?>>location 2</option>
</select>
**In this function you can able to split the function by golang using array of strings**
func SplitCmdArguments(args []string) map[string]string {
m := make(map[string]string)
for _, v := range args {
strs := strings.Split(v, "=")
if len(strs) == 2 {
m[strs[0]] = strs[1]
} else {
log.Println("not proper arguments", strs)
}
}
return m
}
Try This. You need pass the authentication to let the server know its a valid user. You need to import these two packages and has to include a jersy jar. If you dont want to include jersy jar then import this package
import sun.misc.BASE64Encoder;
import com.sun.jersey.core.util.Base64;
import sun.net.www.protocol.http.HttpURLConnection;
and then,
String encodedAuthorizedUser = getAuthantication("username", "password");
URL url = new URL("Your Valid Jira URL");
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
httpCon.setRequestProperty ("Authorization", "Basic " + encodedAuthorizedUser );
public String getAuthantication(String username, String password) {
String auth = new String(Base64.encode(username + ":" + password));
return auth;
}
I would use your suggested code, but with a slight simplification:
KeyGenerator keyGen = KeyGenerator.getInstance("AES");
keyGen.init(256); // for example
SecretKey secretKey = keyGen.generateKey();
Let the provider select how it plans to obtain randomness - don't define something that may not be as good as what the provider has already selected.
This code example assumes (as Maarten points out below) that you've configured your java.security
file to include your preferred provider at the top of the list. If you want to manually specify the provider, just call KeyGenerator.getInstance("AES", "providerName");
.
For a truly secure key, you need to be using a hardware security module (HSM) to generate and protect the key. HSM manufacturers will typically supply a JCE provider that will do all the key generation for you, using the code above.
From menu select: File->Invalidate Catches/Restart...
than in opened dialog select: "Invalidate and Restart" and wait to restart android studio.
Did you put void while calling your function?
For example:
void something(int x){
logic..
}
int main() {
**void** something();
return 0;
}
If so, you should delete the last void.
I'm not sure if this is what you ask, but you can check gradle version of your project here in android studio:
(left pane must be in project view, not android for this path) app->gradle->wrapper->gradle-wrapper.properties
it has a line like this, indicating the gradle version:
distributionUrl=http\://services.gradle.org/distributions/gradle-1.8-all.zip
There is also a table at the end of this page that shows gradle and gradle plug-in versions supported by each android studio version. (you can check your android studio by checking help->about as you may already know)
corrcoef
returns the normalised covariance matrix.
The covariance matrix is the matrix
Cov( X, X ) Cov( X, Y )
Cov( Y, X ) Cov( Y, Y )
Normalised, this will yield the matrix:
Corr( X, X ) Corr( X, Y )
Corr( Y, X ) Corr( Y, Y )
correlation1[0, 0 ]
is the correlation between Strategy1Returns
and itself, which must be 1. You just want correlation1[ 0, 1 ]
.
I don't work with contiguous ranges all the time. My solution for non-contiguous ranges is as follows (includes some code from other answers here):
Sub test_inters()
Dim rng1 As Range
Dim rng2 As Range
Dim inters As Range
Set rng2 = Worksheets("Gen2").Range("K7")
Set rng1 = ExcludeCell(Worksheets("Gen2").Range("K6:K8"), rng2)
If (rng2.Parent.name = rng1.Parent.name) Then
Dim ints As Range
MsgBox rng1.Address & vbCrLf _
& rng2.Address & vbCrLf _
For Each cell In rng1
MsgBox cell.Address
Set ints = Application.Intersect(cell, rng2)
If (Not (ints Is Nothing)) Then
MsgBox "Yes intersection"
Else
MsgBox "No intersection"
End If
Next cell
End If
End Sub
This is perhaps a bit late, but may help someone. I come across similar issue with Iterable
in my codebase and solution was to use for each
without explicitly calling values.iterator();
.
int size = 0;
for(T value : values) {
size++;
}
I wrote a npm library to deal with this problem more beautiful. https://github.com/wenshin/promiseallend
npm i --save promiseallend
const promiseAllEnd = require('promiseallend');
const promises = [Promise.resolve(1), Promise.reject('error'), Promise.resolve(2)];
const promisesObj = {k1: Promise.resolve(1), k2: Promise.reject('error'), k3: Promise.resolve(2)};
// input promises with array
promiseAllEnd(promises, {
unhandledRejection(error, index) {
// error is the original error which is 'error'.
// index is the index of array, it's a number.
console.log(error, index);
}
})
// will call, data is `[1, undefined, 2]`
.then(data => console.log(data))
// won't call
.catch(error => console.log(error.detail))
// input promises with object
promiseAllEnd(promisesObj, {
unhandledRejection(error, prop) {
// error is the original error.
// key is the property of object.
console.log(error, prop);
}
})
// will call, data is `{k1: 1, k3: 2}`
.then(data => console.log(data))
// won't call
.catch(error => console.log(error.detail))
// the same to `Promise.all`
promiseAllEnd(promises, {requireConfig: true})
// will call, `error.detail` is 'error', `error.key` is number 1.
.catch(error => console.log(error.detail))
// requireConfig is Array
promiseAllEnd(promises, {requireConfig: [false, true, false]})
// won't call
.then(data => console.log(data))
// will call, `error.detail` is 'error', `error.key` is number 1.
.catch(error => console.log(error.detail))
// requireConfig is Array
promiseAllEnd(promises, {requireConfig: [true, false, false]})
// will call, data is `[1, undefined, 2]`.
.then(data => console.log(data))
// won't call
.catch(error => console.log(error.detail))
————————————————————————————————
let promiseAllEnd = require('promiseallend');
// input promises with array
promiseAllEnd([Promise.resolve(1), Promise.reject('error'), Promise.resolve(2)])
.then(data => console.log(data)) // [1, undefined, 2]
.catch(error => console.log(error.errorsByKey)) // {1: 'error'}
// input promises with object
promiseAllEnd({k1: Promise.resolve(1), k2: Promise.reject('error'), k3: Promise.resolve(2)})
.then(data => console.log(data)) // {k1: 1, k3: 2}
.catch(error => console.log(error.errorsByKey)) // {k2: 'error'}
Write this code in the same line, this change the icon color:
<li class="fa fa-id-card-o" style="color:white" aria-hidden="true">
From the API for InetAddress
The host name can either be a machine name, such as "java.sun.com", or a textual representation of its IP address. If a literal IP address is supplied, only the validity of the address format is checked.
use this code
var sid = $(this);
sid.attr('checked','checked');
In My Opinion, I would say that dynamically interpreted languages such as PHP, Ruby, etc... are still "normal" langauges. I would say that examples of "scripting" languages are things like bash (or ksh or tcsh or whatever) or sqlplus. These languages are often used to string together existing programs on a system into a series of coherent and related commands, such as:
So I'd say the difference (for me, anyway) is more in how you use the language. Languages like PHP, Perl, Ruby could be used as "scripting languages", but I usually see them used as "normal languages" (except Perl which seems to go both ways.
Additionally if you need to restrict the grouping you can use:
db.events.aggregate(
{$match: {province: "ON"}},
{$group: {_id: "$date", number: {$sum: 1}}}
)
Install Firebug and then you can use console.log(...)
and console.debug(...)
, etc. (see the documentation for more).
I am explaining, How to get current location and Directly move to the camera to current location with assuming that you have implemented map-v2. For more details, You can refer official doc.
Add location service in gradle
implementation "com.google.android.gms:play-services-location:11.0.1"
Add location permission in manifest file
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
Make sure you ask for RunTimePermission. I am using Ask-Permission for that. Its easy to use.
Now refer below code to get the current location and display it on a map.
private FusedLocationProviderClient mFusedLocationProviderClient;
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mFusedLocationProviderClient = LocationServices
.getFusedLocationProviderClient(getActivity());
}
private void getDeviceLocation() {
try {
if (mLocationPermissionGranted) {
Task<Location> locationResult = mFusedLocationProviderClient.getLastLocation();
locationResult.addOnCompleteListener(new OnCompleteListener<Location>() {
@Override
public void onComplete(@NonNull Task<Location> task) {
if (task.isSuccessful()) {
// Set the map's camera position to the current location of the device.
Location location = task.getResult();
LatLng currentLatLng = new LatLng(location.getLatitude(),
location.getLongitude());
CameraUpdate update = CameraUpdateFactory.newLatLngZoom(currentLatLng,
DEFAULT_ZOOM);
googleMap.moveCamera(update);
}
}
});
}
} catch (SecurityException e) {
Log.e("Exception: %s", e.getMessage());
}
}
When user granted location permission call above getDeviceLocation()
method
private void updateLocationUI() {
if (googleMap == null) {
return;
}
try {
if (mLocationPermissionGranted) {
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
getDeviceLocation();
} else {
googleMap.setMyLocationEnabled(false);
googleMap.getUiSettings().setMyLocationButtonEnabled(false);
}
} catch (SecurityException e) {
Log.e("Exception: %s", e.getMessage());
}
}
settings.json
:{}
icon at the top right corner to open the settings.json
:
Add excluded folders to files.exclude
. Also check out search.exclude
and files.watcherExclude
as they might be useful too. This snippet contains their explanations and defaults:
{
// Configure glob patterns for excluding files and folders.
// For example, the files explorer decides which files and folders to show
// or hide based on this setting.
// Read more about glob patterns [here](https://code.visualstudio.com/docs/editor/codebasics#_advanced-search-options).
"files.exclude": {
"**/.git": true,
"**/.svn": true,
"**/.hg": true,
"**/CVS": true,
"**/.DS_Store": true
},
// Configure glob patterns for excluding files and folders in searches.
// Inherits all glob patterns from the `files.exclude` setting.
// Read more about glob patterns [here](https://code.visualstudio.com/docs/editor/codebasics#_advanced-search-options).
"search.exclude": {
"**/node_modules": true,
"**/bower_components": true
},
// Configure glob patterns of file paths to exclude from file watching.
// Patterns must match on absolute paths
// (i.e. prefix with ** or the full path to match properly).
// Changing this setting requires a restart.
// When you experience Code consuming lots of cpu time on startup,
// you can exclude large folders to reduce the initial load.
"files.watcherExclude": {
"**/.git/objects/**": true,
"**/.git/subtree-cache/**": true,
"**/node_modules/*/**": true
}
}
For more details on the other settings, see the official settings.json
reference.
Be careful with the main answer.
with
[['id'=>1,'cat'=>'vip']
,['id'=>2,'cat'=>'vip']
,['id'=>3,'cat'=>'normal']
and calling the function
foreach($array as $elementKey => $element) {
foreach($element as $valueKey => $value) {
if($valueKey == 'cat' && $value == 'vip'){
//delete this particular object from the $array
unset($array[$elementKey]);
}
}
}
it returns
[2=>['id'=>3,'cat'=>'normal']
instead of
[0=>['id'=>3,'cat'=>'normal']
It is because unset does not re-index the array.
It reindexes. (if we need it)
$result=[];
foreach($array as $elementKey => $element) {
foreach($element as $valueKey => $value) {
$found=false;
if($valueKey === 'cat' && $value === 'vip'){
$found=true;
$break;
}
if(!$found) {
$result[]=$element;
}
}
}
Using Modern JavaScript function syntax
const getDaysPastDate = (daysBefore, date = new Date) => new Date(date - (1000 * 60 * 60 * 24 * daysBefore));_x000D_
_x000D_
console.log(getDaysPastDate(1)); // yesterday
_x000D_
The query below will give you a list of all users and their permissions on the table in a schema.
select a.schemaname, a.tablename, b.usename,
HAS_TABLE_PRIVILEGE(usename, quote_ident(schemaname) || '.' || quote_ident(tablename), 'select') as has_select,
HAS_TABLE_PRIVILEGE(usename, quote_ident(schemaname) || '.' || quote_ident(tablename), 'insert') as has_insert,
HAS_TABLE_PRIVILEGE(usename, quote_ident(schemaname) || '.' || quote_ident(tablename), 'update') as has_update,
HAS_TABLE_PRIVILEGE(usename, quote_ident(schemaname) || '.' || quote_ident(tablename), 'delete') as has_delete,
HAS_TABLE_PRIVILEGE(usename, quote_ident(schemaname) || '.' || quote_ident(tablename), 'references') as has_references
from pg_tables a, pg_user b
where a.schemaname = 'your_schema_name' and a.tablename='your_table_name';
More details on has_table_privilages
can be found here.