How can I start an interactive console for Perl?
I always did:
rlwrap perl -wlne'eval;print$@if$@'
With 5.10, I've switched to:
rlwrap perl -wnE'say eval()//$@'
(rlwrap is optional)
Interactive shell using Docker Compose
If the yml is called docker-compose.yml it can be launched with a simple $ docker-compose up. The corresponding attachment of a terminal can be simply (consider that the yml has specified a service called myservice):
$ docker-compose exec myservice sh
However, if you are using a different yml file name, such as docker-compose-mycompose.yml, it should be launched using $ docker-compose -f docker-compose-mycompose.yml up. To attach an interactive terminal you have to specify the yml file too, just like:
$ docker-compose -f docker-compose-mycompose.yml exec myservice sh
Passing arguments to an interactive program non-interactively
You can also use printf to pipe the input to your script.
var=val
printf "yes\nno\nmaybe\n$var\n" | ./your_script.sh
How to return a resolved promise from an AngularJS Service using $q?
To return a resolved promise, you can use:
return $q.defer().resolve();
If you need to resolve something or return data:
return $q.defer().resolve(function(){
var data;
return data;
});
Redirect to a page/URL after alert button is pressed
window.location = mypage.href is a direct command for the browser to dump it's contents and start loading up some more. So for better clarification, here's what's happening in your PHP script:
echo '<script type="text/javascript">';
echo 'alert("review your answer");';
echo 'window.location = "index.php";';
echo '</script>';
1) prepare to accept a modification or addition to the current Javascript cache. 2) show the alert 3) dump everything in browser memory and get ready for some more (albeit an older method of loading a new URL (AND NOTICE that there are no "\n" (new line) indicators between the lines and is therefore causing some havoc in the JS decoder.
Let me suggest that you do this another way..
echo '<script type="text/javascript">\n';
echo 'alert("review your answer");\n';
echo 'document.location.href = "index.php";\n';
echo '</script>\n';
1) prepare to accept a modification or addition to the current Javascript cache. 2) show the alert 3) dump everything in browser memory and get ready for some more (in a better fashion than before) And WOW - it all works because the JS decoder can see that each command is anow a new line.
Best of luck!
No matching client found for package name (Google Analytics) - multiple productFlavors & buildTypes
check if client_id and package_name in the google-services.json has a correct value according to your package name.
You should add the mentioned file into the flavors directory with corresponding package name in the client_id and package_name field.
Regular expression search replace in Sublime Text 2
Here is a visual presentation of the approved answer.
"No Content-Security-Policy meta tag found." error in my phonegap application
There are errors in your meta tag.
Yours:
<meta http-equiv="Content-Security-Policy" content="default-src *; style-src 'self' 'unsafe-inline'; script-src: 'self' 'unsafe-inline' 'unsafe-eval'>
Corrected:
<meta http-equiv="Content-Security-Policy" content="default-src *; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' 'unsafe-eval'"/>
Note the colon after "script-src", and the end double-quote of the meta tag.
How to center canvas in html5
Just center the div in HTML:
#test {
width: 100px;
height:100px;
margin: 0px auto;
border: 1px solid red;
}
<div id="test">
<canvas width="100" height="100"></canvas>
</div>
Just change the height and width to whatever and you've got a centered div
How to get correct timestamp in C#
For UTC:
string unixTimestamp = Convert.ToString((int)DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1)).TotalSeconds);
For local system:
string unixTimestamp = Convert.ToString((int)DateTime.Now.Subtract(new DateTime(1970, 1, 1)).TotalSeconds);
Which port we can use to run IIS other than 80?
Port 8080 might have been used by another process in your computer.
Do netstat in command prompt to find out which server/process is using it.
Have a look at this page (http://en.wikipedia.org/wiki/Port_number) it gives you full explanation on how to use port number
Create auto-numbering on images/figures in MS Word
- Select whole document (Ctrl+A)
- Press F9
- Save
Should update the figure caption automatically.
My question is tho, how can one also 'assign' referenced figures '(Fig.4)' in the text to do the same thing - aka change when an image is added above it?
EDIT: Figured it out.. In word go to Insert and Cross-ref and assign the ref. Then Ctrl+A and F9 and everything should sort itself out.
jquery : focus to div is not working
a <div> can be focused if it has a tabindex attribute. (the value can be set to -1)
For example:
$("#focus_point").attr("tabindex",-1).focus();
In addition, consider setting outline: none !important; so it displayed without a focus rectangle.
var element = $("#focus_point");
element.css('outline', 'none !important')
.attr("tabindex", -1)
.focus();
Import / Export database with SQL Server Server Management Studio
Right click the database itself, Tasks -> Generate Scripts...
Then follow the wizard.
For SSMS2008+, if you want to also export the data, on the "Set Scripting Options" step, select the "Advanced" button and change "Types of data to script" from "Schema Only" to "Data Only" or "Schema and Data".
Format / Suppress Scientific Notation from Python Pandas Aggregation Results
If you would like to use the values, say as part of csvfile csv.writer, the numbers can be formatted before creating a list:
df['label'].apply(lambda x: '%.17f' % x).values.tolist()
jQuery/Javascript function to clear all the fields of a form
You can simply use the reset button type.
<input type="text" />
<input type="reset" />
jsfiddle
Edit: Remember that, the reset button, reset the form for the original values, so, if the field has some value set on the field <input type="text" value="Name" /> after press reset the field will reset the value inserted by user and come back with the word "name" in this example.
Reference: http://api.jquery.com/reset-selector/
Java equivalent to JavaScript's encodeURIComponent that produces identical output?
Guava library has PercentEscaper:
Escaper percentEscaper = new PercentEscaper("-_.*", false);
"-_.*" are safe characters
false says PercentEscaper to escape space with '%20', not '+'
How to schedule a stored procedure in MySQL
If you're open to out-of-the-DB solution: You could set up a cron job that runs a script that will itself call the procedure.
Linux Script to check if process is running and act on the result
I have adopted your script for my situation Jotne.
#! /bin/bash
logfile="/var/oscamlog/oscam1check.log"
case "$(pidof oscam1 | wc -w)" in
0) echo "oscam1 not running, restarting oscam1: $(date)" >> $logfile
/usr/local/bin/oscam1 -b -c /usr/local/etc/oscam1 -t /usr/local/tmp.oscam1 &
;;
2) echo "oscam1 running, all OK: $(date)" >> $logfile
;;
*) echo "multiple instances of oscam1 running. Stopping & restarting oscam1: $(date)" >> $logfile
kill $(pidof oscam1 | awk '{print $1}')
;;
esac
While I was testing, I ran into a problem..
I started 3 extra process's of oscam1 with this line:
/usr/local/bin/oscam1 -b -c /usr/local/etc/oscam1 -t /usr/local/tmp.oscam1
which left me with 8 process for oscam1. the problem is this..
When I run the script, It only kills 2 process's at a time, so I would have to run it 3 times to get it down to 2 process..
Other than killall -9 oscam1 followed by /usr/local/bin/oscam1 -b -c /usr/local/etc/oscam1 -t /usr/local/tmp.oscam1, in *)is there any better way to killall apart from the original process? So there would be zero downtime?
Best way for storing Java application name and version properties
Use properties file. Here is a good start: http://www.mkyong.com/java/java-properties-file-examples/
Check if current directory is a Git repository
Another solution is to check for the command's exit code.
git rev-parse 2> /dev/null; [ $? == 0 ] && echo 1
This will print 1 if you're in a git repository folder.
Redirect from asp.net web api post action
Sure:
public HttpResponseMessage Post()
{
// ... do the job
// now redirect
var response = Request.CreateResponse(HttpStatusCode.Moved);
response.Headers.Location = new Uri("http://www.abcmvc.com");
return response;
}
Inner join with count() on three tables
i tried putting distinct on both, count(distinct ord.ord_id) as num_order, count(distinct items.item_id) as num items
its working :)
SELECT
people.pe_name,
COUNT(distinct orders.ord_id) AS num_orders,
COUNT(distinct items.item_id) AS num_items
FROM
people
INNER JOIN orders ON (orders.pe_id = people.pe_id)
INNER JOIN items ON items.pe_id = people.pe_id
GROUP BY
people.pe_id;
Thanks for the Thread it helps :)
How to make the Facebook Like Box responsive?
I was trying to do this on Drupal 7 with the " fb_likebox" module (https://drupal.org/project/fb_likebox). To get it to be responsive. Turns out I had to write my own Contrib module Variation and stripe out the width setting option. (the default height option didn't matter for me). Once I removed the width, I added the <div id="likebox-wrapper"> in the fb_likebox.tpl.php.
Here's my CSS to style it:
`#likebox-wrapper * {
width: 100% !important;
background: url('../images/block.png') repeat 0 0;
color: #fbfbfb;
-webkit-border-radius: 7px;
-moz-border-radius: 7px;
-o-border-radius: 7px;
border-radius: 7px;
border: 1px solid #DDD;}`
How to convert upper case letters to lower case
You can find more methods and functions related to Python strings in section 5.6.1. String Methods of the documentation.
w.strip(',.').lower()
Postgresql, update if row with some unique value exists, else insert
I found this post more relevant in this scenario:
WITH upsert AS (
UPDATE spider_count SET tally=tally+1
WHERE date='today' AND spider='Googlebot'
RETURNING *
)
INSERT INTO spider_count (spider, tally)
SELECT 'Googlebot', 1
WHERE NOT EXISTS (SELECT * FROM upsert)
"java.lang.OutOfMemoryError : unable to create new native Thread"
It's likely that your OS does not allow the number of threads you're trying to create, or you're hitting some limit in the JVM. Especially if it's such a round number as 32k, a limit of one kind or another is a very likely culprit.
Are you sure you truly need 32k threads? Most modern languages have some kind of support for pools of reusable threads - I'm sure Java has something in place too (like ExecutorService, as user Jesper mentioned). Perhaps you could request threads from such a pool, instead of manually creating new ones.
Bootstrap 4 card-deck with number of columns based on viewport
Using Bootstrap 4.4.1, I was able to set the number of cards per deck using simple classes by adding some scss into the mix.
HTML
<div class="card-deck deck-1 deck-md-2 deck-lg-3">
<div class="card">
<h2 class="card-header">Card 1</h3>
<div class="card-body">
Card body
</div>
<div class="card-footer">
Card footer
</div>
</div>
<div class="card">
<h2 class="card-header">Card 2</h3>
<div class="card-body">
Card body
</div>
<div class="card-footer">
Card footer
</div>
</div>
<div class="card">
<h2 class="card-header">Card 3</h3>
<div class="card-body">
Card body
</div>
<div class="card-footer">
Card footer
</div>
</div>
</div>
SCSS
// _card_deck_columns.scss
// add deck-X and deck-BP-X classes to select the number of cards per line
@for $i from 1 through $grid-columns {
.deck-#{$i} > .card {
$percentage: percentage(1 / $i);
@if $i == 1 {
$width: $percentage;
flex-basis: $width;
max-width: $width;
margin-left: 0;
margin-right: 0;
} @else {
$width: unquote("calc(#{$percentage} - #{$grid-gutter-width})");
flex-basis: $width;
max-width: $width;
}
}
}
@each $breakpoint in map-keys($grid-breakpoints) {
$infix: breakpoint-infix($breakpoint, $grid-breakpoints);
@include media-breakpoint-up($breakpoint) {
@for $i from 1 through $grid-columns {
.deck#{$infix}-#{$i} > .card {
$percentage: percentage(1 / $i);
@if $i == 1 {
$width: $percentage;
flex-basis: $width;
max-width: $width;
margin-left: 0;
margin-right: 0;
} @else {
$width: unquote("calc(#{$percentage} - #{$grid-gutter-width})");
flex-basis: $width;
max-width: $width;
margin-left: $grid-gutter-width / 2;
margin-right: $grid-gutter-width / 2;
}
}
}
}
}
CSS
.deck-1 > .card {
flex-basis: 100%;
max-width: 100%;
margin-left: 0;
margin-right: 0; }
.deck-2 > .card {
flex-basis: calc(50% - 30px);
max-width: calc(50% - 30px); }
.deck-3 > .card {
flex-basis: calc(33.3333333333% - 30px);
max-width: calc(33.3333333333% - 30px); }
.deck-4 > .card {
flex-basis: calc(25% - 30px);
max-width: calc(25% - 30px); }
.deck-5 > .card {
flex-basis: calc(20% - 30px);
max-width: calc(20% - 30px); }
.deck-6 > .card {
flex-basis: calc(16.6666666667% - 30px);
max-width: calc(16.6666666667% - 30px); }
.deck-7 > .card {
flex-basis: calc(14.2857142857% - 30px);
max-width: calc(14.2857142857% - 30px); }
.deck-8 > .card {
flex-basis: calc(12.5% - 30px);
max-width: calc(12.5% - 30px); }
.deck-9 > .card {
flex-basis: calc(11.1111111111% - 30px);
max-width: calc(11.1111111111% - 30px); }
.deck-10 > .card {
flex-basis: calc(10% - 30px);
max-width: calc(10% - 30px); }
.deck-11 > .card {
flex-basis: calc(9.0909090909% - 30px);
max-width: calc(9.0909090909% - 30px); }
.deck-12 > .card {
flex-basis: calc(8.3333333333% - 30px);
max-width: calc(8.3333333333% - 30px); }
.deck-1 > .card {
flex-basis: 100%;
max-width: 100%;
margin-left: 0;
margin-right: 0; }
.deck-2 > .card {
flex-basis: calc(50% - 30px);
max-width: calc(50% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-3 > .card {
flex-basis: calc(33.3333333333% - 30px);
max-width: calc(33.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-4 > .card {
flex-basis: calc(25% - 30px);
max-width: calc(25% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-5 > .card {
flex-basis: calc(20% - 30px);
max-width: calc(20% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-6 > .card {
flex-basis: calc(16.6666666667% - 30px);
max-width: calc(16.6666666667% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-7 > .card {
flex-basis: calc(14.2857142857% - 30px);
max-width: calc(14.2857142857% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-8 > .card {
flex-basis: calc(12.5% - 30px);
max-width: calc(12.5% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-9 > .card {
flex-basis: calc(11.1111111111% - 30px);
max-width: calc(11.1111111111% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-10 > .card {
flex-basis: calc(10% - 30px);
max-width: calc(10% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-11 > .card {
flex-basis: calc(9.0909090909% - 30px);
max-width: calc(9.0909090909% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-12 > .card {
flex-basis: calc(8.3333333333% - 30px);
max-width: calc(8.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; }
@media (min-width: 576px) {
.deck-sm-1 > .card {
flex-basis: 100%;
max-width: 100%;
margin-left: 0;
margin-right: 0; }
.deck-sm-2 > .card {
flex-basis: calc(50% - 30px);
max-width: calc(50% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-3 > .card {
flex-basis: calc(33.3333333333% - 30px);
max-width: calc(33.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-4 > .card {
flex-basis: calc(25% - 30px);
max-width: calc(25% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-5 > .card {
flex-basis: calc(20% - 30px);
max-width: calc(20% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-6 > .card {
flex-basis: calc(16.6666666667% - 30px);
max-width: calc(16.6666666667% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-7 > .card {
flex-basis: calc(14.2857142857% - 30px);
max-width: calc(14.2857142857% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-8 > .card {
flex-basis: calc(12.5% - 30px);
max-width: calc(12.5% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-9 > .card {
flex-basis: calc(11.1111111111% - 30px);
max-width: calc(11.1111111111% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-10 > .card {
flex-basis: calc(10% - 30px);
max-width: calc(10% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-11 > .card {
flex-basis: calc(9.0909090909% - 30px);
max-width: calc(9.0909090909% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-sm-12 > .card {
flex-basis: calc(8.3333333333% - 30px);
max-width: calc(8.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; } }
@media (min-width: 768px) {
.deck-md-1 > .card {
flex-basis: 100%;
max-width: 100%;
margin-left: 0;
margin-right: 0; }
.deck-md-2 > .card {
flex-basis: calc(50% - 30px);
max-width: calc(50% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-3 > .card {
flex-basis: calc(33.3333333333% - 30px);
max-width: calc(33.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-4 > .card {
flex-basis: calc(25% - 30px);
max-width: calc(25% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-5 > .card {
flex-basis: calc(20% - 30px);
max-width: calc(20% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-6 > .card {
flex-basis: calc(16.6666666667% - 30px);
max-width: calc(16.6666666667% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-7 > .card {
flex-basis: calc(14.2857142857% - 30px);
max-width: calc(14.2857142857% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-8 > .card {
flex-basis: calc(12.5% - 30px);
max-width: calc(12.5% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-9 > .card {
flex-basis: calc(11.1111111111% - 30px);
max-width: calc(11.1111111111% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-10 > .card {
flex-basis: calc(10% - 30px);
max-width: calc(10% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-11 > .card {
flex-basis: calc(9.0909090909% - 30px);
max-width: calc(9.0909090909% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-md-12 > .card {
flex-basis: calc(8.3333333333% - 30px);
max-width: calc(8.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; } }
@media (min-width: 992px) {
.deck-lg-1 > .card {
flex-basis: 100%;
max-width: 100%;
margin-left: 0;
margin-right: 0; }
.deck-lg-2 > .card {
flex-basis: calc(50% - 30px);
max-width: calc(50% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-3 > .card {
flex-basis: calc(33.3333333333% - 30px);
max-width: calc(33.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-4 > .card {
flex-basis: calc(25% - 30px);
max-width: calc(25% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-5 > .card {
flex-basis: calc(20% - 30px);
max-width: calc(20% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-6 > .card {
flex-basis: calc(16.6666666667% - 30px);
max-width: calc(16.6666666667% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-7 > .card {
flex-basis: calc(14.2857142857% - 30px);
max-width: calc(14.2857142857% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-8 > .card {
flex-basis: calc(12.5% - 30px);
max-width: calc(12.5% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-9 > .card {
flex-basis: calc(11.1111111111% - 30px);
max-width: calc(11.1111111111% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-10 > .card {
flex-basis: calc(10% - 30px);
max-width: calc(10% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-11 > .card {
flex-basis: calc(9.0909090909% - 30px);
max-width: calc(9.0909090909% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-lg-12 > .card {
flex-basis: calc(8.3333333333% - 30px);
max-width: calc(8.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; } }
@media (min-width: 1200px) {
.deck-xl-1 > .card {
flex-basis: 100%;
max-width: 100%;
margin-left: 0;
margin-right: 0; }
.deck-xl-2 > .card {
flex-basis: calc(50% - 30px);
max-width: calc(50% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-3 > .card {
flex-basis: calc(33.3333333333% - 30px);
max-width: calc(33.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-4 > .card {
flex-basis: calc(25% - 30px);
max-width: calc(25% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-5 > .card {
flex-basis: calc(20% - 30px);
max-width: calc(20% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-6 > .card {
flex-basis: calc(16.6666666667% - 30px);
max-width: calc(16.6666666667% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-7 > .card {
flex-basis: calc(14.2857142857% - 30px);
max-width: calc(14.2857142857% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-8 > .card {
flex-basis: calc(12.5% - 30px);
max-width: calc(12.5% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-9 > .card {
flex-basis: calc(11.1111111111% - 30px);
max-width: calc(11.1111111111% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-10 > .card {
flex-basis: calc(10% - 30px);
max-width: calc(10% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-11 > .card {
flex-basis: calc(9.0909090909% - 30px);
max-width: calc(9.0909090909% - 30px);
margin-left: 15px;
margin-right: 15px; }
.deck-xl-12 > .card {
flex-basis: calc(8.3333333333% - 30px);
max-width: calc(8.3333333333% - 30px);
margin-left: 15px;
margin-right: 15px; } }
Making heatmap from pandas DataFrame
If you don't need a plot per say, and you're simply interested in adding color to represent the values in a table format, you can use the style.background_gradient() method of the pandas data frame. This method colorizes the HTML table that is displayed when viewing pandas data frames in e.g. the JupyterLab Notebook and the result is similar to using "conditional formatting" in spreadsheet software:
import numpy as np
import pandas as pd
index= ['aaa', 'bbb', 'ccc', 'ddd', 'eee']
cols = ['A', 'B', 'C', 'D']
df = pd.DataFrame(abs(np.random.randn(5, 4)), index=index, columns=cols)
df.style.background_gradient(cmap='Blues')
For detailed usage, please see the more elaborate answer I provided on the same topic previously and the styling section of the pandas documentation.
jQuery Form Validation before Ajax submit
You need to trigger form validation before checking if it is valid. Field validation runs after you enter data in each field. Form validation is triggered by the submit event but at the document level. So your event handler is being triggered before jquery validates the whole form. But fret not, there's a simple solution to all of this.
You should validate the form:
if ($(this).validate().form()) {
// do ajax stuff
}
https://jqueryvalidation.org/Validator.form/#validator-form()
When and Why to use abstract classes/methods?
At a very high level:
Abstraction of any kind comes down to separating concerns. "Client" code of an abstraction doesn't care how the contract exposed by the abstraction is fulfilled. You usually don't care if a string class uses a null-terminated or buffer-length-tracked internal storage implementation, for example. Encapsulation hides the details, but by making classes/methods/etc. abstract, you allow the implementation to change or for new implementations to be added without affecting the client code.
Remove a file from a Git repository without deleting it from the local filesystem
Above answers didn't work for me. I used filter-branch to remove all committed files.
Remove a file from a git repository with:
git filter-branch --tree-filter 'rm file'
Remove a folder from a git repository with:
git filter-branch --tree-filter 'rm -rf directory'
This removes the directory or file from all the commits.
You can specify a commit by using:
git filter-branch --tree-filter 'rm -rf directory' HEAD
Or an range:
git filter-branch --tree-filter 'rm -rf vendor/gems' t49dse..HEAD
To push everything to remote, you can do:
git push origin master --force
installing apache: no VCRUNTIME140.dll
I was gone through same problem & I resolved it by following steps.
- Uninstall earlier version of wamp server, which you are trying to install.
- Install which ever file supports to your configuration (64, 86) from en this link
- Restart your computer.
- Install wampserver now.
Simple prime number generator in Python
Another simple example, with a simple optimization of only considering odd numbers. Everything done with lazy streams (python generators).
Usage: primes = list(create_prime_iterator(1, 30))
import math
import itertools
def create_prime_iterator(rfrom, rto):
"""Create iterator of prime numbers in range [rfrom, rto]"""
prefix = [2] if rfrom < 3 and rto > 1 else [] # include 2 if it is in range separately as it is a "weird" case of even prime
odd_rfrom = 3 if rfrom < 3 else make_odd(rfrom) # make rfrom an odd number so that we can skip all even nubers when searching for primes, also skip 1 as a non prime odd number.
odd_numbers = (num for num in xrange(odd_rfrom, rto + 1, 2))
prime_generator = (num for num in odd_numbers if not has_odd_divisor(num))
return itertools.chain(prefix, prime_generator)
def has_odd_divisor(num):
"""Test whether number is evenly divisable by odd divisor."""
maxDivisor = int(math.sqrt(num))
for divisor in xrange(3, maxDivisor + 1, 2):
if num % divisor == 0:
return True
return False
def make_odd(number):
"""Make number odd by adding one to it if it was even, otherwise return it unchanged"""
return number | 1
How to get a context in a recycler view adapter
First globally declare
Context mContext;
pass context with the constructor, by modifying it.
public FeedAdapter(List<Post> myDataset, Context context) {
mDataset = myDataset;
this.mContext = context;
}
then use the mContext whereever you need it
500.21 Bad module "ManagedPipelineHandler" in its module list
I discovered that the order of adding roles and features is important. On a fresh system I activate the role "application server" and there check explicitly .net, web server support and finally process activation service Then automatically a dialogue comes up that the role "Web server" needs to be added also.
How to convert array into comma separated string in javascript
The method array.toString() actually calls array.join() which result in a string concatenated by commas. ref
var array = ['a','b','c','d','e','f'];_x000D_
document.write(array.toString()); // "a,b,c,d,e,f"Also, you can implicitly call Array.toString() by making javascript coerce the Array to an string, like:
//will implicitly call array.toString()
str = ""+array;
str = `${array}`;
Array.prototype.join()
The join() method joins all elements of an array into a string.
Arguments:
It accepts a separator as argument, but the default is already a comma ,
str = arr.join([separator = ','])
Examples:
var array = ['A', 'B', 'C'];
var myVar1 = array.join(); // 'A,B,C'
var myVar2 = array.join(', '); // 'A, B, C'
var myVar3 = array.join(' + '); // 'A + B + C'
var myVar4 = array.join(''); // 'ABC'
Note:
If any element of the array is undefined or null , it is treated as an empty string.
Browser support:
It is available pretty much everywhere today, since IE 5.5 (1999~2000).
References
How might I find the largest number contained in a JavaScript array?
I just started with JavaScript, but I think this method would be good:
var array = [34, 23, 57, 983, 198];
var score = 0;
for(var i = 0; i = array.length; i++) {
if(array[ i ] > score) {
score = array[i];
}
}
How to change row color in datagridview?
You're looking for the CellFormatting event.
Here is an example.
Extension methods must be defined in a non-generic static class
I encountered a similar issue, I created a 'foo' folder and created a "class" inside foo, then I get the aforementioned error. One fix is to add "static" as earlier mentioned to the class which will be "public static class LinqHelper".
My assumption is that when you create a class inside the foo folder it regards it as an extension class, hence the following inter alia rule apply to it:
1) Every extension method must be a static method
WORKAROUND If you don't want static. My workaround was to create a class directly under the namespace and then drag it to the "foo" folder.
How can I format a decimal to always show 2 decimal places?
I suppose you're probably using the Decimal() objects from the decimal module? (If you need exactly two digits of precision beyond the decimal point with arbitrarily large numbers, you definitely should be, and that's what your question's title suggests...)
If so, the Decimal FAQ section of the docs has a question/answer pair which may be useful for you:
Q. In a fixed-point application with two decimal places, some inputs have many places and need to be rounded. Others are not supposed to have excess digits and need to be validated. What methods should be used?
A. The quantize() method rounds to a fixed number of decimal places. If the Inexact trap is set, it is also useful for validation:
>>> TWOPLACES = Decimal(10) ** -2 # same as Decimal('0.01')
>>> # Round to two places
>>> Decimal('3.214').quantize(TWOPLACES)
Decimal('3.21')
>>> # Validate that a number does not exceed two places
>>> Decimal('3.21').quantize(TWOPLACES, context=Context(traps=[Inexact]))
Decimal('3.21')
>>> Decimal('3.214').quantize(TWOPLACES, context=Context(traps=[Inexact]))
Traceback (most recent call last):
...
Inexact: None
The next question reads
Q. Once I have valid two place inputs, how do I maintain that invariant throughout an application?
If you need the answer to that (along with lots of other useful information), see the aforementioned section of the docs. Also, if you keep your Decimals with two digits of precision beyond the decimal point (meaning as much precision as is necessary to keep all digits to the left of the decimal point and two to the right of it and no more...), then converting them to strings with str will work fine:
str(Decimal('10'))
# -> '10'
str(Decimal('10.00'))
# -> '10.00'
str(Decimal('10.000'))
# -> '10.000'
Javascript getElementsByName.value not working
Here is the example for having one or more checkboxes value. If you have two or more checkboxes and need values then this would really help.
function myFunction() {_x000D_
var selchbox = [];_x000D_
var inputfields = document.getElementsByName("myCheck");_x000D_
var ar_inputflds = inputfields.length;_x000D_
_x000D_
for (var i = 0; i < ar_inputflds; i++) {_x000D_
if (inputfields[i].type == 'checkbox' && inputfields[i].checked == true)_x000D_
selchbox.push(inputfields[i].value);_x000D_
}_x000D_
return selchbox;_x000D_
_x000D_
}_x000D_
_x000D_
document.getElementById('btntest').onclick = function() {_x000D_
var selchb = myFunction();_x000D_
console.log(selchb);_x000D_
}Checkbox:_x000D_
<input type="checkbox" name="myCheck" value="UK">United Kingdom_x000D_
<input type="checkbox" name="myCheck" value="USA">United States_x000D_
<input type="checkbox" name="myCheck" value="IL">Illinois_x000D_
<input type="checkbox" name="myCheck" value="MA">Massachusetts_x000D_
<input type="checkbox" name="myCheck" value="UT">Utah_x000D_
_x000D_
<input type="button" value="Click" id="btntest" />Email Address Validation for ASP.NET
You can use a RegularExpression validator. The ValidationExpression property has a button you can press in Visual Studio's property's panel that gets lists a lot of useful expressions. The one they use for email addresses is:
\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
How to enable C++11/C++0x support in Eclipse CDT?
Neither the hack nor the cleaner version work for Indigo. The hack is ignored, and the required configuration options are missing. For no apparent reason, build started working after not working and not providing any useful reason why. At least from the command line, I get reproducible results.
How to make a DIV not wrap?
If I don't want to define a minimal width because I don't know the amount of elements the only thing that worked to me was:
display: inline-block;
white-space: nowrap;
But only in Chrome and Safari :/
PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
You can use the REASSIGN OWNED command.
Synopsis:
REASSIGN OWNED BY old_role [, ...] TO new_role
This changes all objects owned by old_role to the new role. You don't have to think about what kind of objects that the user has, they will all be changed. Note that it only applies to objects inside a single database. It does not alter the owner of the database itself either.
It is available back to at least 8.2. Their online documentation only goes that far back.
Nullable property to entity field, Entity Framework through Code First
Jon's answer didn't work for me as I got a compiler error CS0453 C# The type must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method
This worked for me though:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<SomeObject>().HasOptional(m => m.somefield);
base.OnModelCreating(modelBuilder);
}
How do you install Google frameworks (Play, Accounts, etc.) on a Genymotion virtual device?
Sometimes "ARM Translation Installer v1.1" is not working.. Here is the simple solution to install Google Play.
Go to this link: http://www.mediafire.com/download/jdn83v1v3bregyu/Galaxy+S4++HTC+One++Xperia+Z+-+4.2.2+-+with+Google+Apps+-+API+17+-+1080x1920.zip
Download the file from the link and extract to get the Android virtual device with Google Play store. The file will be in the name as “Galaxy S4 HTC One Xperia Z – 4.2.2 – with Google Apps – API 17 – 1080×1920".
Close all your Genymotion store running in the background.
Copy that extracted file in to the following folder. C:\Users\'username'\AppData\Local\Genymobile\Genymotion\deployed
After you copy you should see this path: C:\Users\'username'\AppData\Local\Genymobile\Genymotion\deployed\Galaxy S4 HTC One Xperia Z - 4.2.2 - with Google Apps - API 17 - 1080x1920
Inside the “Galaxy S4 HTC One Xperia Z – 4.2.2 – with Google Apps – API 17 – 1080×1920" folder you will see many *.vmdk and *.vbox files.
Now open VirtualBox and select Machine->Add and browse for the above folder and import the *.vbox file.
Restart Genymotion. Done.
read.csv warning 'EOF within quoted string' prevents complete reading of file
You need to disable quoting.
cit <- read.csv("citations.CSV", quote = "",
row.names = NULL,
stringsAsFactors = FALSE)
str(cit)
## 'data.frame': 112543 obs. of 13 variables:
## $ row.names : chr "10.2307/675394" "10.2307/30007362" "10.2307/4254931" "10.2307/20537934" ...
## $ id : chr "10.2307/675394\t" "10.2307/30007362\t" "10.2307/4254931\t" "10.2307/20537934\t" ...
## $ doi : chr "Archaeological Inference and Inductive Confirmation\t" "Sound and Sense in Cath Almaine\t" "Oak Galls Preserved by the Eruption of Mount Vesuvius in A.D. 79_ and Their Probable Use\t" "The Arts Four Thousand Years Ago\t" ...
## $ title : chr "Bruce D. Smith\t" "Tomás Ó Cathasaigh\t" "Hiram G. Larew\t" "\t" ...
## $ author : chr "American Anthropologist\t" "Ériu\t" "Economic Botany\t" "The Illustrated Magazine of Art\t" ...
## $ journaltitle : chr "79\t" "54\t" "41\t" "1\t" ...
## $ volume : chr "3\t" "\t" "1\t" "3\t" ...
## $ issue : chr "1977-09-01T00:00:00Z\t" "2004-01-01T00:00:00Z\t" "1987-01-01T00:00:00Z\t" "1853-01-01T00:00:00Z\t" ...
## $ pubdate : chr "pp. 598-617\t" "pp. 41-47\t" "pp. 33-40\t" "pp. 171-172\t" ...
## $ pagerange : chr "American Anthropological Association\tWiley\t" "Royal Irish Academy\t" "New York Botanical Garden Press\tSpringer\t" "\t" ...
## $ publisher : chr "fla\t" "fla\t" "fla\t" "fla\t" ...
## $ type : logi NA NA NA NA NA NA ...
## $ reviewed.work: logi NA NA NA NA NA NA ...
I think is because of this kind of lines (check "Thorn" and "Minus")
readLines("citations.CSV")[82]
[1] "10.2307/3642839,10.2307/3642839\t,\"Thorn\" and \"Minus\" in Hieroglyphic Luvian Orthography\t,H. Craig Melchert\t,Anatolian Studies\t,38\t,\t,1988-01-01T00:00:00Z\t,pp. 29-42\t,British Institute at Ankara\t,fla\t,\t,"
Are there benefits of passing by pointer over passing by reference in C++?
A pointer can receive a NULL parameter, a reference parameter can not. If there's ever a chance that you could want to pass "no object", then use a pointer instead of a reference.
Also, passing by pointer allows you to explicitly see at the call site whether the object is passed by value or by reference:
// Is mySprite passed by value or by reference? You can't tell
// without looking at the definition of func()
func(mySprite);
// func2 passes "by pointer" - no need to look up function definition
func2(&mySprite);
Compare if BigDecimal is greater than zero
if (value.signum() > 0)
signum returns -1, 0, or 1 as the value of this BigDecimal is negative, zero, or positive.
phpMyAdmin - The MySQL Extension is Missing
In my case I had to install the extension:
yum install php php-mysql httpd
and then restart apache:
service httpd restart
That solved the problem.
How to alter a column and change the default value?
For DEFAULT CURRENT_TIMESTAMP:
ALTER TABLE tablename
CHANGE COLUMN columnname1 columname1 DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
CHANGE COLUMN columnname2 columname2 DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP;
Please note double columnname declaration
Removing DEFAULT CURRENT_TIMESTAMP:
ALTER TABLE tablename
ALTER COLUMN columnname1 DROP DEFAULT,
ALTER COLUMN columnname2 DROPT DEFAULT;
Sometimes adding a WCF Service Reference generates an empty reference.cs
The technique that worked for me in my case, after reading these answers to no avail, was simply to comment out all of my contract, and uncomment bits until it doesn't work anymore, in a binary search fashion. That narrows down the offending bit of code.
Then you just have to guess what's wrong with that code.
Some error feedback in the tool would have helped, of course.
I am writing a web service contract. I had a placeholder enum with no members. That's OK. But if I use it in a property of another class, and re-use the contract dll on the client, the codegen explodes with no error message. Running svcutil.exe didn't help, it just failed to output a cs file without mentioning why.
How to select all records from one table that do not exist in another table?
You can either do
SELECT name
FROM table2
WHERE name NOT IN
(SELECT name
FROM table1)
or
SELECT name
FROM table2
WHERE NOT EXISTS
(SELECT *
FROM table1
WHERE table1.name = table2.name)
See this question for 3 techniques to accomplish this
VBA procedure to import csv file into access
The easiest way to do it is to link the CSV-file into the Access database as a table. Then you can work on this table as if it was an ordinary access table, for instance by creating an appropriate query based on this table that returns exactly what you want.
You can link the table either manually or with VBA like this
DoCmd.TransferText TransferType:=acLinkDelim, TableName:="tblImport", _
FileName:="C:\MyData.csv", HasFieldNames:=true
UPDATE
Dim db As DAO.Database
' Re-link the CSV Table
Set db = CurrentDb
On Error Resume Next: db.TableDefs.Delete "tblImport": On Error GoTo 0
db.TableDefs.Refresh
DoCmd.TransferText TransferType:=acLinkDelim, TableName:="tblImport", _
FileName:="C:\MyData.csv", HasFieldNames:=true
db.TableDefs.Refresh
' Perform the import
db.Execute "INSERT INTO someTable SELECT col1, col2, ... FROM tblImport " _
& "WHERE NOT F1 IN ('A1', 'A2', 'A3')"
db.Close: Set db = Nothing
JavaScript: Is there a way to get Chrome to break on all errors?
This is now supported in Chrome by the "Pause on all exceptions" button.
To enable it:
- Go to the "Sources" tab in Chrome Developer Tools
- Click the "Pause" button at the bottom of the window to switch to "Pause on all exceptions mode".
Note that this button has multiple states. Keep clicking the button to switch between
- "Pause on all exceptions" - the button is colored light blue
- "Pause on uncaught exceptions", the button is colored purple.
- "Dont pause on exceptions" - the button is colored gray
Lining up labels with radio buttons in bootstrap
If you add the 'radio inline' class to the control label in the solution provided by user1938475 it should line up correctly with the other labels. Or if you're only using 'radio' like your 2nd example just include the 'radio' class.
<label class="radio control-label">Some label</label>
OR for 'radio inline'
<label class="radio-inline control-label">Some label</label>
Quick way to retrieve user information Active Directory
The reason why your code is slow is that your LDAP query retrieves every single user object in your domain even though you're only interested in one user with a common name of "Adit":
dSearcher.Filter = "(&(objectClass=user))";
So to optimize, you need to narrow your LDAP query to just the user you are interested in. Try something like:
dSearcher.Filter = "(&(objectClass=user)(cn=Adit))";
In addition, don't forget to dispose these objects when done:
- DirectoryEntry
dEntry - DirectorySearcher
dSearcher
Make an HTTP request with android
unless you have an explicit reason to choose the Apache HttpClient, you should prefer java.net.URLConnection. you can find plenty of examples of how to use it on the web.
we've also improved the Android documentation since your original post: http://developer.android.com/reference/java/net/HttpURLConnection.html
and we've talked about the trade-offs on the official blog: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
Generating a random password in php
Tiny code with 2 line.
demo: http://codepad.org/5rHMHwnH
function rand_string( $length ) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
return substr(str_shuffle($chars),0,$length);
}
echo rand_string(8);
with rand_string you can define how much character will be create.
Get next element in foreach loop
You could get the keys of the array before the foreach, then use a counter to check the next element, something like:
//$arr is the array you wish to cycle through
$keys = array_keys($arr);
$num_keys = count($keys);
$i = 1;
foreach ($arr as $a)
{
if ($i < $num_keys && $arr[$keys[$i]] == $a)
{
// we have a match
}
$i++;
}
This will work for both simple arrays, such as array(1,2,3), and keyed arrays such as array('first'=>1, 'second'=>2, 'thrid'=>3).
How do I change the IntelliJ IDEA default JDK?
I have found out that in recent versions of IntelliJ IDEA requires Java 1.8 but is not configured by default.
We can change the path or configure from Project Settings > Project > Project SDK
here we can edit or add the JDK´s path.
(in my case the path is located in C:\Program Files\Java\jdk1.8.0_102)
Difference between text and varchar (character varying)
On PostgreSQL manual
There is no performance difference among these three types, apart from increased storage space when using the blank-padded type, and a few extra CPU cycles to check the length when storing into a length-constrained column. While character(n) has performance advantages in some other database systems, there is no such advantage in PostgreSQL; in fact character(n) is usually the slowest of the three because of its additional storage costs. In most situations text or character varying should be used instead.
I usually use text
References: http://www.postgresql.org/docs/current/static/datatype-character.html
How can I encode a string to Base64 in Swift?
Swift 3 or 4
let base64Encoded = Data("original string".utf8).base64EncodedString()
How to concatenate properties from multiple JavaScript objects
ECMAscript 6 introduced Object.assign() to achieve this natively in Javascript.
The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.
MDN documentation on Object.assign()
var o1 = { a: 1 };_x000D_
var o2 = { b: 2 };_x000D_
var o3 = { c: 3 };_x000D_
_x000D_
var obj = Object.assign({}, o1, o2, o3);_x000D_
console.log(obj); // { a: 1, b: 2, c: 3 }Object.assign is supported in many modern browsers but not yet all of them. Use a transpiler like Babel and Traceur to generate backwards-compatible ES5 JavaScript.
Is it possible to ignore one single specific line with Pylint?
import config.logging_settings # pylint: disable=W0611
That was simple and is specific for that line.
You can and should use the more readable form:
import config.logging_settings # pylint: disable=unused-import
Is there a way to 'uniq' by column?
well, simpler than isolating the column with awk, if you need to remove everything with a certain value for a given file, why not just do grep -v:
e.g. to delete everything with the value "col2" in the second place line: col1,col2,col3,col4
grep -v ',col2,' file > file_minus_offending_lines
If this isn't good enough, because some lines may get improperly stripped by possibly having the matching value show up in a different column, you can do something like this:
awk to isolate the offending column: e.g.
awk -F, '{print $2 "|" $line}'
the -F sets the field delimited to ",", $2 means column 2, followed by some custom delimiter and then the entire line. You can then filter by removing lines that begin with the offending value:
awk -F, '{print $2 "|" $line}' | grep -v ^BAD_VALUE
and then strip out the stuff before the delimiter:
awk -F, '{print $2 "|" $line}' | grep -v ^BAD_VALUE | sed 's/.*|//g'
(note -the sed command is sloppy because it doesn't include escaping values. Also the sed pattern should really be something like "[^|]+" (i.e. anything not the delimiter). But hopefully this is clear enough.
not:first-child selector
You can use your selector with :not like bellow you can use any selector inside the :not()
any_CSS_selector:not(any_other_CSS_selector){
/*YOUR STYLE*/
}
you can use
:notwithout parent selector as well.
:not(:nth-child(2)){
/*YOUR STYLE*/
}
More examples
any_CSS_selector:not(:first-child){
/*YOUR STYLE*/
}
any_CSS_selector:not(:first-of-type){
/*YOUR STYLE*/
}
any_CSS_selector:not(:checked){
/*YOUR STYLE*/
}
any_CSS_selector:not(:last-child){
/*YOUR STYLE*/
}
any_CSS_selector:not(:last-of-type){
/*YOUR STYLE*/
}
any_CSS_selector:not(:first-of-type){
/*YOUR STYLE*/
}
any_CSS_selector:not(:nth-last-of-type(2)){
/*YOUR STYLE*/
}
any_CSS_selector:not(:nth-last-child(2)){
/*YOUR STYLE*/
}
any_CSS_selector:not(:nth-child(2)){
/*YOUR STYLE*/
}
Clone only one branch
I have done with below single git command:
git clone [url] -b [branch-name] --single-branch
ApiNotActivatedMapError for simple html page using google-places-api
I had the same error. To fix the error:
- Open the console menu
Gallery Menuand selectAPI Manager. - On the left, click
Credentialsand then clickNew Credentials. - Click
Create Credentials. - Click
API KEY. - Click
Navigator Key(there are more options; It depends on when consumed).
You must use this new API Navigator Key, generated by the system.
How to encode URL to avoid special characters in Java?
If you don't want to do it manually use Apache Commons - Codec library. The class you are looking at is: org.apache.commons.codec.net.URLCodec
String final url = "http://www.google.com?...."
String final urlSafe = org.apache.commons.codec.net.URLCodec.encode(url);
jQuery .val change doesn't change input value
This is just a possible scenario which happened to me. Well if it helps someone then great: I wrote a complicated app which somewhere along the code I used a function to clear all textboxes values before showing them. Sometime later I tried to set a textbox value using jquery val('value') but I did'nt notice that right after that I invoked the ClearAllInputs method.. so, this could also happen.
How to read integer value from the standard input in Java
This causes headaches so I updated a solution that will run using the most common hardware and software tools available to users in December 2014. Please note that the JDK/SDK/JRE/Netbeans and their subsequent classes, template libraries compilers, editors and debuggerz are free.
This program was tested with Java v8 u25. It was written and built using
Netbeans IDE 8.0.2, JDK 1.8, OS is win8.1 (apologies) and browser is Chrome (double-apologies)
- meant to assist UNIX-cmd-line OG's deal with modern GUI-Web-based IDEs
at ZERO COST - because information (and IDEs) should always be free.
By Tapper7. For Everyone.
code block:
package modchk; //Netbeans requirement.
import java.util.Scanner;
//import java.io.*; is not needed Netbeans automatically includes it.
public class Modchk {
public static void main(String[] args){
int input1;
int input2;
//Explicity define the purpose of the .exe to user:
System.out.println("Modchk by Tapper7. Tests IOStream and basic bool modulo fxn.\n"
+ "Commented and coded for C/C++ programmers new to Java\n");
//create an object that reads integers:
Scanner Cin = new Scanner(System.in);
//the following will throw() if you don't do you what it tells you or if
//int entered == ArrayIndex-out-of-bounds for your system. +-~2.1e9
System.out.println("Enter an integer wiseguy: ");
input1 = Cin.nextInt(); //this command emulates "cin >> input1;"
//I test like Ernie Banks played hardball: "Let's play two!"
System.out.println("Enter another integer...anyday now: ");
input2 = Cin.nextInt();
//debug the scanner and istream:
System.out.println("the 1st N entered by the user was " + input1);
System.out.println("the 2nd N entered by the user was " + input2);
//"do maths" on vars to make sure they are of use to me:
System.out.println("modchk for " + input1);
if(2 % input1 == 0){
System.out.print(input1 + " is even\n"); //<---same output effect as *.println
}else{
System.out.println(input1 + " is odd");
}//endif input1
//one mo' 'gain (as in istream dbg chk above)
System.out.println("modchk for " + input2);
if(2 % input2 == 0){
System.out.print(input2 + " is even\n");
}else{
System.out.println(input2 + " is odd");
}//endif input2
}//end main
}//end Modchk
Public free web services for testing soap client
There is a bunch on here:
http://www.webservicex.net/WS/wscatlist.aspx
Just google for "Free WebService" or "Open WebService" and you'll find tons of open SOAP endpoints.
Remember, you can get a WSDL from any ASMX endpoint by adding ?WSDL to the url.
Disable submit button ONLY after submit
As a number of people have pointed out, disabling the submit button has some negative side effects (at least in Chrome it prevents the name/value of the button pressed from being submitted). My solution was to simply add an attribute to indicate that submit has been requested, and then check for the presence of this attribute on every submit. Because I'm using the submit function, this is only called after all HTML 5 validation is successful. Here is my code:
$("form.myform").submit(function (e) {
// Check if we have submitted before
if ( $("#submit-btn").attr('attempted') == 'true' ) {
//stop submitting the form because we have already clicked submit.
e.preventDefault();
}
else {
$("#submit-btn").attr("attempted", 'true');
}
});
SQL to LINQ Tool
Edit 7/17/2020: I cannot delete this accepted answer. It used to be good, but now it isn't. Beware really old posts, guys. I'm removing the link.
[Linqer] is a SQL to LINQ converter tool. It helps you to learn LINQ and convert your existing SQL statements.
Not every SQL statement can be converted to LINQ, but Linqer covers many different types of SQL expressions. Linqer supports both .NET languages - C# and Visual Basic.
How to use boost bind with a member function
Use the following instead:
boost::function<void (int)> f2( boost::bind( &myclass::fun2, this, _1 ) );
This forwards the first parameter passed to the function object to the function using place-holders - you have to tell Boost.Bind how to handle the parameters. With your expression it would try to interpret it as a member function taking no arguments.
See e.g. here or here for common usage patterns.
Note that VC8s cl.exe regularly crashes on Boost.Bind misuses - if in doubt use a test-case with gcc and you will probably get good hints like the template parameters Bind-internals were instantiated with if you read through the output.
Changing the tmp folder of mysql
This is answered in the documentation:
Where MySQL Stores Temporary Files
On Unix, MySQL uses the value of the TMPDIR environment variable as the path name of the directory in which to store temporary files. If TMPDIR is not set, MySQL uses the system default, which is usually /tmp, /var/tmp, or /usr/tmp.
On Windows, Netware and OS2, MySQL checks in order the values of the TMPDIR, TEMP, and TMP environment variables. For the first one found to be set, MySQL uses it and does not check those remaining. If none of TMPDIR, TEMP, or TMP are set, MySQL uses the Windows system default, which is usually C:\windows\temp.
Vue.js dynamic images not working
I got this working by following code
getImgUrl(pet) {
var images = require.context('../assets/', false, /\.png$/)
return images('./' + pet + ".png")
}
and in HTML:
<div class="col-lg-2" v-for="pic in pics">
<img :src="getImgUrl(pic)" v-bind:alt="pic">
</div>
But not sure why my earlier approach did not work.
Cannot read property 'style' of undefined -- Uncaught Type Error
It's currently working, I've just changed the operator > in order to work in the snippet, take a look:
window.onload = function() {_x000D_
_x000D_
if (window.location.href.indexOf("test") <= -1) {_x000D_
var search_span = document.getElementsByClassName("securitySearchQuery");_x000D_
search_span[0].style.color = "blue";_x000D_
search_span[0].style.fontWeight = "bold";_x000D_
search_span[0].style.fontSize = "40px";_x000D_
_x000D_
}_x000D_
_x000D_
}<h1 class="keyword-title">Search results for<span class="securitySearchQuery"> "hi".</span></h1>Incrementing a date in JavaScript
Two methods:
1:
var a = new Date()
// no_of_days is an integer value
var b = new Date(a.setTime(a.getTime() + no_of_days * 86400000)
2: Similar to the previous method
var a = new Date()
// no_of_days is an integer value
var b = new Date(a.setDate(a.getDate() + no_of_days)
How can one check to see if a remote file exists using PHP?
You can use :
$url=getimagesize(“http://www.flickr.com/photos/27505599@N07/2564389539/”);
if(!is_array($url))
{
$default_image =”…/directoryFolder/junal.jpg”;
}
Gradle store on local file system
On Mac, Linux and Windows i.e. on all 3 of the major platforms, Gradle stores dependencies at:
~/.gradle/caches/modules-2/files-2.1
Fuzzy matching using T-SQL
Part 2 of the code For the link in Redfilter Answer:
References:
https://github.com/mb16/geocoderNet/blob/master/build/sql/doubleMetaphone.sql
BEGIN
SET @MP1 = @MP1 + 'N'
SET @MP2 = @MP2 + 'KN'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'KN'
SET @MP2 = @MP2 + 'KN'
END
END
SET @CurrentPosition = @CurrentPosition + 2
END
--'tagliaro'
ELSE IF (dbo.fnStringAt((@CurrentPosition + 1),@Word,'LI')=1) AND
(dbo.fnSlavoGermanic(@Word)=0)
BEGIN
SET @MP1 = @MP1 + 'KL'
SET @MP2 = @MP2 + 'L'
SET @CurrentPosition = @CurrentPosition + 2
END
-- -ges-,-gep-,-gel-, -gie- at beginning
-- This call to fnStringAt() is the 'worst case' in number of values passed. A UDF that used DEFAULT values instead of
-- a multi-valued argument would require ten DEFAULT arguments for EP, EB, EL, etc. (assuming the first was not defined with a DEFAULT).
ELSE IF ((@CurrentPosition = 1)
AND ((SUBSTRING(@Word,@CurrentPosition + 1,1) = 'Y')
OR (dbo.fnStringAt((@CurrentPosition +
1),@Word,'ES,EP,EB,EL,EY,IB,IL,IN,IE,EI,ER')=1)) )
BEGIN
SET @MP1 = @MP1 + 'K'
SET @MP2 = @MP2 + 'J'
SET @CurrentPosition = @CurrentPosition + 2
END
-- -ger-, -gy-
ELSE IF (((dbo.fnStringAt((@CurrentPosition + 1), @Word, 'ER')=1) OR
(SUBSTRING(@Word,@CurrentPosition + 1,1) = 'Y'))
AND (dbo.fnStringAt(1, @Word, 'DANGER,RANGER,MANGER')=0)
AND (dbo.fnStringAt((@CurrentPosition - 1), @Word,
'E,I,RGY,OGY')=0) )
BEGIN
SET @MP1 = @MP1 + 'K'
SET @MP2 = @MP2 + 'J'
SET @CurrentPosition = @CurrentPosition + 2
END
-- italian e.g, 'biaggi'
ELSE IF (dbo.fnStringAt((@CurrentPosition + 1),@Word,'E,I,Y')=1) OR
(dbo.fnStringAt((@CurrentPosition - 1),@Word,'AGGI,OGGI')=1)
BEGIN
--obvious germanic
IF ((dbo.fnStringAt(1,@Word,'VAN ,VON ,SCH')=1)
OR (dbo.fnStringAt((@CurrentPosition + 1),@Word,'ET')=1))
BEGIN
SET @MP1 = @MP1 + 'K'
SET @MP2 = @MP2 + 'K'
END
ELSE
BEGIN
--always soft if french ending
IF (dbo.fnStringAt((@CurrentPosition + 1),@Word,'IER ')=1)
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + 'J'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + 'K'
END
END
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'G')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'K'
SET @MP2 = @MP2 + 'K'
END
END
ELSE IF @CurrentChar = 'H'
BEGIN
--only keep if first & before vowel or btw. 2 vowels
IF (((@CurrentPosition = 1) OR
(dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition - 1,1))=1))
AND (dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition + 1,1))=1))
BEGIN
SET @MP1 = @MP1 + 'H'
SET @MP2 = @MP2 + 'H'
SET @CurrentPosition = @CurrentPosition + 2
END
--also takes care of 'HH'
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
ELSE IF @CurrentChar = 'J'
BEGIN
--obvious spanish, 'jose', 'san jacinto'
IF (dbo.fnStringAt(@CurrentPosition,@Word,'JOSE')=1) OR
(dbo.fnStringAt(1,@Word,'SAN ')=1)
BEGIN
IF (((@CurrentPosition = 1) AND (SUBSTRING(@Word,@CurrentPosition
+ 4,1) = ' ')) OR (dbo.fnStringAt(1,@Word,'SAN ')=1) )
BEGIN
SET @MP1 = @MP1 + 'H'
SET @MP2 = @MP2 + 'H'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + 'H'
END
SET @CurrentPosition = @CurrentPosition + 1
END
ELSE IF ((@CurrentPosition = 1) AND
(dbo.fnStringAt(@CurrentPosition,@Word,'JOSE')=0))
BEGIN
SET @MP1 = @MP1 + 'J'
--Yankelovich/Jankelowicz
SET @MP2 = @MP2 + 'A'
--it could happen!
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'J')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
ELSE
BEGIN
--spanish pron. of e.g. 'bajador'
IF( (dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition - 1,1))=1)
AND (dbo.fnSlavoGermanic(@Word)=0)
AND ((SUBSTRING(@Word,@CurrentPosition + 1,1) = 'A') OR
(SUBSTRING(@Word,@CurrentPosition + 1,1) = 'O')))
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + 'H'
END
ELSE
BEGIN
IF (@CurrentPosition = @WordLength)
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + ''
END
ELSE
BEGIN
IF ((dbo.fnStringAt((@CurrentPosition + 1), @Word,
'L,T,K,S,N,M,B,Z')=0)
AND (dbo.fnStringAt((@CurrentPosition - 1), @Word,
'S,K,L')=0))
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + 'J'
END
END
END
--it could happen!
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'J')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
END
ELSE IF @CurrentChar = 'K'
BEGIN
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'K')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'K'
SET @MP2 = @MP2 + 'K'
END
ELSE IF @CurrentChar = 'L'
BEGIN
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'L')
BEGIN
--spanish e.g. 'cabrillo', 'gallegos'
IF (((@CurrentPosition = (@WordLength - 3))
AND (dbo.fnStringAt((@CurrentPosition -
1),@Word,'ILLO,ILLA,ALLE')=1))
OR (((dbo.fnStringAt((@WordLength - 1),@Word,'AS,OS')=1)
OR (dbo.fnStringAt(@WordLength,@Word,'A,O')=1))
AND (dbo.fnStringAt((@CurrentPosition -
1),@Word,'ALLE')=1)) )
BEGIN
SET @MP1 = @MP1 + 'L'
SET @MP2 = @MP2 + ''
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
SET @MP1 = @MP1 + 'L'
SET @MP2 = @MP2 + 'L'
END
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
SET @MP1 = @MP1 + 'L'
SET @MP2 = @MP2 + 'L'
END
END
ELSE IF @CurrentChar = 'M'
BEGIN
--'dumb','thumb'
IF (((dbo.fnStringAt((@CurrentPosition - 1), @Word,'UMB')=1)
AND (((@CurrentPosition + 1) = @WordLength) OR
(dbo.fnStringAt((@CurrentPosition + 2),@Word,'ER')=1)))
OR (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'M') )
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'M'
SET @MP2 = @MP2 + 'M'
END
ELSE IF @CurrentChar = 'N'
BEGIN
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'N')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'N'
SET @MP2 = @MP2 + 'N'
END
ELSE IF @CurrentChar = 'Ñ'
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
SET @MP1 = @MP1 + 'N'
SET @MP2 = @MP2 + 'N'
END
ELSE IF @CurrentChar = 'P'
BEGIN
--What about Michelle Pfeiffer, star of Grease 2? Price-Pfister?, Pfizer?
--Don't just look for an 'F' next, what about 'topflight', helpful, campfire, leapfrog, stepfather
--Sorry, Mark Knopfler, I don't know how to help you
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'H')
OR ((@CurrentPosition = 1) AND
(SUBSTRING(@Word,@CurrentPosition + 1,1) = 'F') AND
(dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition+2,1))=1))
BEGIN
SET @MP1 = @MP1 + 'F'
SET @MP2 = @MP2 + 'F'
SET @CurrentPosition = @CurrentPosition + 2
END
--also account for "campbell", "raspberry"
ELSE
BEGIN
IF (dbo.fnStringAt((@CurrentPosition + 1),@Word, 'P,B')=1)
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'P'
SET @MP2 = @MP2 + 'P'
END
END
ELSE IF @CurrentChar = 'Q'
BEGIN
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'Q')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'K'
SET @MP2 = @MP2 + 'K'
END
ELSE IF @CurrentChar = 'R'
BEGIN
--QQ: Will SQL short circuit eval? Otherwise, I could try to read before string begins here...
--french e.g. 'rogier', but exclude 'hochmeier'
IF ((@CurrentPosition = @WordLength)
AND (dbo.fnSlavoGermanic(@Word)=0)
AND (dbo.fnStringAt((@CurrentPosition - 2), @Word, 'IE')=1)
AND (dbo.fnStringAt((@CurrentPosition - 4), @Word,
'ME,MA')=0))
BEGIN
SET @MP1 = @MP1 + ''
SET @MP2 = @MP2 + 'R'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'R'
SET @MP2 = @MP2 + 'R'
END
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'R')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
ELSE IF @CurrentChar = 'S'
BEGIN
--special cases 'island', 'isle', 'carlisle', 'carlysle'
IF (dbo.fnStringAt((@CurrentPosition - 1), @Word, 'ISL,YSL')=1)
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
--special case 'sugar-'
ELSE IF ((@CurrentPosition = 1) AND (dbo.fnStringAt(@CurrentPosition,
@Word, 'SUGAR')=1))
BEGIN
SET @MP1 = @MP1 + 'X'
SET @MP2 = @MP2 + 'S'
SET @CurrentPosition = @CurrentPosition + 1
END
ELSE IF (dbo.fnStringAt(@CurrentPosition, @Word, 'SH')=1)
BEGIN
--germanic
IF (dbo.fnStringAt((@CurrentPosition + 1), @Word,
'HEIM,HOEK,HOLM,HOLZ')=1)
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'S'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'X'
SET @MP2 = @MP2 + 'X'
END
SET @CurrentPosition = @CurrentPosition + 2
END
--italian & armenian
ELSE IF (dbo.fnStringAt(@CurrentPosition, @Word, 'SIO,SIA')=1) OR
(dbo.fnStringAt(@CurrentPosition, @Word, 'SIAN')=1)
BEGIN
IF (dbo.fnSlavoGermanic(@Word)=0)
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'X'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'S'
END
SET @CurrentPosition = @CurrentPosition + 3
END
--german & anglicisations, e.g. 'smith' match 'schmidt', 'snider' match 'schneider'
--also, -sz- in slavic language altho in hungarian it is pronounced 's'
ELSE IF (((@CurrentPosition = 1)
AND (dbo.fnStringAt((@CurrentPosition + 1), @Word, 'M,N,L,W')=1))
OR (dbo.fnStringAt((@CurrentPosition + 1), @Word, 'Z')=1))
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'X'
IF (dbo.fnStringAt((@CurrentPosition + 1), @Word, 'Z')=1)
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
ELSE IF (dbo.fnStringAt(@CurrentPosition, @Word, 'SC')=1)
BEGIN
--Schlesinger's rule
IF (SUBSTRING(@Word,@CurrentPosition + 2,1) = 'H')
BEGIN
--dutch origin, e.g. 'school', 'schooner'
IF (dbo.fnStringAt((@CurrentPosition + 3), @Word,
'OO,ER,EN,UY,ED,EM')=1)
BEGIN
--'schermerhorn', 'schenker'
IF (dbo.fnStringAt((@CurrentPosition + 3), @Word, 'ER,EN')=1)
BEGIN
SET @MP1 = @MP1 + 'X'
SET @MP2 = @MP2 + 'SK'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'SK'
SET @MP2 = @MP2 + 'SK'
END
SET @CurrentPosition = @CurrentPosition + 3
END
ELSE
BEGIN
IF ((@CurrentPosition = 1) AND
(dbo.fnIsVowel(SUBSTRING(@Word,3,1))=0) AND (SUBSTRING(@Word,3,1) <> 'W'))
BEGIN
SET @MP1 = @MP1 + 'X'
SET @MP2 = @MP2 + 'S'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'X'
SET @MP2 = @MP2 + 'X'
END
SET @CurrentPosition = @CurrentPosition + 3
END
END
ELSE IF (dbo.fnStringAt((@CurrentPosition + 2), @Word, 'I,E,Y')=1)
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'S'
SET @CurrentPosition = @CurrentPosition + 3
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'SK'
SET @MP2 = @MP2 + 'SK'
SET @CurrentPosition = @CurrentPosition + 3
END
END
ELSE
BEGIN
--french e.g. 'resnais', 'artois'
IF ((@CurrentPosition = @WordLength) AND
(dbo.fnStringAt((@CurrentPosition - 2), @Word, 'AI,OI')=1))
BEGIN
SET @MP1 = @MP1 + ''
SET @MP2 = @MP2 + 'S'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'S'
END
IF (dbo.fnStringAt((@CurrentPosition + 1), @Word, 'S,Z')=1)
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
END
ELSE IF @CurrentChar = 'T'
BEGIN
IF (dbo.fnStringAt(@CurrentPosition, @Word, 'TION,TIA,TCH')=1)
BEGIN
SET @MP1 = @MP1 + 'X'
SET @MP2 = @MP2 + 'X'
SET @CurrentPosition = @CurrentPosition + 3
END
ELSE IF (dbo.fnStringAt(@CurrentPosition, @Word, 'TH,TTH')=1)
BEGIN
--special case 'thomas', 'thames' or germanic
IF (dbo.fnStringAt((@CurrentPosition + 2), @Word, 'OM,AM')=1)
OR (dbo.fnStringAt(1, @Word, 'VAN ,VON ,SCH')=1)
BEGIN
SET @MP1 = @MP1 + 'T'
SET @MP2 = @MP2 + 'T'
END
ELSE
BEGIN
SET @MP1 = @MP1 + '0'
SET @MP2 = @MP2 + 'T'
END
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
IF (dbo.fnStringAt((@CurrentPosition + 1), @Word, 'T,D')=1)
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'T'
SET @MP2 = @MP2 + 'T'
END
END
ELSE IF @CurrentChar = 'V'
BEGIN
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'V')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
SET @MP1 = @MP1 + 'F'
SET @MP2 = @MP2 + 'F'
END
ELSE IF @CurrentChar = 'W'
BEGIN
--can also be in middle of word
IF (dbo.fnStringAt(@CurrentPosition, @Word, 'WR')=1)
BEGIN
SET @MP1 = @MP1 + 'R'
SET @MP2 = @MP2 + 'R'
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE IF ((@CurrentPosition = 1)
AND ((dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition + 1,1))=1)
OR (dbo.fnStringAt(@CurrentPosition, @Word, 'WH')=1)))
BEGIN
--Wasserman should match Vasserman
IF (dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition + 1,1))=1)
BEGIN
SET @MP1 = @MP1 + 'A'
SET @MP2 = @MP2 + 'F'
END
ELSE
BEGIN
--need Uomo to match Womo
SET @MP1 = @MP1 + 'A'
SET @MP2 = @MP2 + 'A'
END
SET @CurrentPosition = @CurrentPosition + 1
END
--Arnow should match Arnoff
ELSE IF (((@CurrentPosition = @WordLength) AND
(dbo.fnIsVowel(SUBSTRING(@Word,@CurrentPosition - 1,1))=1))
OR (dbo.fnStringAt((@CurrentPosition - 1), @Word,
'EWSKI,EWSKY,OWSKI,OWSKY')=1)
OR (dbo.fnStringAt(1, @Word, 'SCH')=1))
BEGIN
SET @MP1 = @MP1 + ''
SET @MP2 = @MP2 + 'F'
SET @CurrentPosition = @CurrentPosition + 1
END
--polish e.g. 'filipowicz'
ELSE IF (dbo.fnStringAt(@CurrentPosition, @Word, 'WICZ,WITZ')=1)
BEGIN
SET @MP1 = @MP1 + 'TS'
SET @MP2 = @MP2 + 'FX'
SET @CurrentPosition = @CurrentPosition + 4
END
-- skip it
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
ELSE IF @CurrentChar = 'X'
BEGIN
--french e.g. breaux
IF (NOT((@CurrentPosition = @WordLength)
AND ((dbo.fnStringAt((@CurrentPosition - 3), @Word, 'IAU,EAU')=1)
OR (dbo.fnStringAt((@CurrentPosition - 2), @Word,
'AU,OU')=1))) )
BEGIN
SET @MP1 = @MP1 + 'KS'
SET @MP2 = @MP2 + 'KS'
END
IF (dbo.fnStringAt((@CurrentPosition + 1), @Word, 'C,X')=1)
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
ELSE IF @CurrentChar = 'Z'
BEGIN
--chinese pinyin e.g. 'zhao'
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'H')
BEGIN
SET @MP1 = @MP1 + 'J'
SET @MP2 = @MP2 + 'J'
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
IF ((dbo.fnStringAt((@CurrentPosition + 1), @Word, 'ZO,ZI,ZA')=1)
OR ((dbo.fnSlavoGermanic(@Word)=1) AND ((@CurrentPosition >
1) AND SUBSTRING(@Word,@CurrentPosition - 1,1) <> 'T')))
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'TS'
END
ELSE
BEGIN
SET @MP1 = @MP1 + 'S'
SET @MP2 = @MP2 + 'S'
END
IF (SUBSTRING(@Word,@CurrentPosition + 1,1) = 'Z')
BEGIN
SET @CurrentPosition = @CurrentPosition + 2
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
END
ELSE
BEGIN
SET @CurrentPosition = @CurrentPosition + 1
END
END
--only give back 4 char metaphone
IF (LEN(@MP1) > 4)
BEGIN
SET @MP1 = LEFT(@MP1, 4)
END
IF (LEN(@MP2) > 4)
BEGIN
SET @MP2 = LEFT(@MP2, 4)
END
IF @MP2 = @MP1
BEGIN
SET @MP2 = ''
END
INSERT @DMP(Metaphone1,Metaphone2) VALUES( @MP1, @MP2 )
RETURN
END
GO;
------------------------------------------------------------------------
IF OBJECT_ID('fnDoubleMetaphoneScalar') IS NOT NULL BEGIN DROP FUNCTION
fnDoubleMetaphoneScalar END
GO;
CREATE FUNCTION fnDoubleMetaphoneScalar( @MetaphoneType int, @Word varchar(50) )
RETURNS char(4)
AS
BEGIN
RETURN (SELECT CASE @MetaphoneType WHEN 1 THEN Metaphone1
WHEN 2 THEN Metaphone2 END FROM fnDoubleMetaphoneTable( @Word ))
END
What order are the Junit @Before/@After called?
Yes, this behaviour is guaranteed:
The
@Beforemethods of superclasses will be run before those of the current class, unless they are overridden in the current class. No other ordering is defined.
The
@Aftermethods declared in superclasses will be run after those of the current class, unless they are overridden in the current class.
Field 'id' doesn't have a default value?
It amazing for me, for solving Field 'id' doesn't have a default value? I have tried all the possible ways what are given here like..
set sql_mode=""
set @@sql_mode = ''; etc
but unfortunately these didn't work for me. So after long investigation, I found that
@Entity
@Table(name="vendor_table")
public class Customer {
@Id
@Column(name="cid")
private int cid;
.....
}
@Entity
@Table(name="vendor_table")
public class Vendor {
@Id
private int vid;
@Column
private String vname;
.....
}
here you can see that both tables are having same name. It is very funny mistake, was done by me :)))). After correcting this,my problem was gone off.
Set a cookie to HttpOnly via Javascript
An HttpOnly cookie means that it's not available to scripting languages like JavaScript. So in JavaScript, there's absolutely no API available to get/set the HttpOnly attribute of the cookie, as that would otherwise defeat the meaning of HttpOnly.
Just set it as such on the server side using whatever server side language the server side is using. If JavaScript is absolutely necessary for this, you could consider to just let it send some (ajax) request with e.g. some specific request parameter which triggers the server side language to create an HttpOnly cookie. But, that would still make it easy for hackers to change the HttpOnly by just XSS and still have access to the cookie via JS and thus make the HttpOnly on your cookie completely useless.
Why use armeabi-v7a code over armeabi code?
EABI = Embedded Application Binary Interface. It is such specifications to which an executable must conform in order to execute in a specific execution environment. It also specifies various aspects of compilation and linkage required for interoperation between toolchains used for the ARM Architecture. In this context when we speak about armeabi we speak about ARM architecture and GNU/Linux OS. Android follows the little-endian ARM GNU/Linux ABI.
armeabi application will run on ARMv5 (e.g. ARM9) and ARMv6 (e.g. ARM11). You may use Floating Point hardware if you build your application using proper GCC options like -mfpu=vfpv3 -mfloat-abi=softfp which tells compiler to generate floating point instructions for VFP hardware and enables the soft-float calling conventions. armeabi doesn't support hard-float calling conventions (it means FP registers are not used to contain arguments for a function), but FP operations in HW are still supported.
armeabi-v7a application will run on Cortex A# devices like Cortex A8, A9, and A15. It supports multi-core processors and it supports -mfloat-abi=hard. So, if you build your application using -mfloat-abi=hard, many of your function calls will be faster.
Cron job every three days
* * */3 * * that says, every minute of every hour on every three days.
0 0 */3 * * says at 00:00 (midnight) every three days.
"You may need an appropriate loader to handle this file type" with Webpack and Babel
This one throw me for a spin. Angular 7, Webpack I found this article so I want to give credit to the Article https://www.edc4it.com/blog/web/helloworld-angular2.html
What the solution is: //on your component file. use template as webpack will treat it as text template: require('./process.component.html')
for karma to interpret it npm install add html-loader --save-dev { test: /.html$/, use: "html-loader" },
Hope this helps somebody
No server in Eclipse; trying to install Tomcat
For future poeple who have the same problem: Try to add server tab from eclipse menu, if it doesnt work, then go do @Tomasz Bartnik solution above, and retry the following again:
Go to WIndow > Show view > Other
search for
servers, select it and press OK
It will then be added to your tabs
Return list of items in list greater than some value
A list comprehension is a simple approach:
j2 = [x for x in j if x >= 5]
Alternately, you can use filter for the exact same result:
j2 = filter(lambda x: x >= 5, j)
Note that the original list j is unmodified.
Creating PHP class instance with a string
Yes, you can!
$str = 'One';
$class = 'Class'.$str;
$object = new $class();
When using namespaces, supply the fully qualified name:
$class = '\Foo\Bar\MyClass';
$instance = new $class();
Other cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$method = 'doStuff';
$object = new MyClass();
$object->$method(); // calls the MyClass->doStuff() method.
Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (38)
CentOS 7, 64 bit. Fresh installation.
In my case, the error was because I didn't have the right MySQL server and MySQL client installed.
Using yum, I removed mariadb and mysql-community edition. I downloaded the rpm's for the client and server from the official MySQL website and installed the server and client.
On installing the server, I was shown a message that the password to the root account for MySQL was stored in a file which I could view with sudo cat /root/.mysql_secret.
So after installing the client and server, I checked if MySQL was working (I think I rebooted before doing so) with the command sudo service mysql status and I got the result.
MySQL running (2601) [ OK ]
I logged into MySQL using the password from the .mysql_secret file:
mysql -uroot -pdxM01Xfg3DXEPabpf. Note that dxM01Xfg3DXEPabpf is the password mentioned in the .mysql_secret file.
and then typed entered the following command at the mysql prompt to change the password of root:
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('somePassword');
Everything worked fine from then on.
Get names of all keys in the collection
Following the thread from @James Cropcho's answer, I landed on the following which I found to be super easy to use. It is a binary tool, which is exactly what I was looking for: mongoeye.
Using this tool it took about 2 minutes to get my schema exported from command line.
Get the last item in an array
This can be done with lodash _.last or _.nth:
var data = [1, 2, 3, 4]_x000D_
var last = _.nth(data, -1)_x000D_
console.log(last)<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js"></script>jQuery ajax request with json response, how to?
Firstly, it will help if you set the headers of your PHP to serve JSON:
header('Content-type: application/json');
Secondly, it will help to adjust your ajax call:
$.ajax({
url: "main.php",
type: "POST",
dataType: "json",
data: {"action": "loadall", "id": id},
success: function(data){
console.log(data);
},
error: function(error){
console.log("Error:");
console.log(error);
}
});
If successful, the response you receieve should be picked up as true JSON and an object should be logged to console.
NOTE: If you want to pick up pure html, you might want to consider using another method to JSON, but I personally recommend using JSON and rendering it into html using templates (such as Handlebars js).
redirect to current page in ASP.Net
http://en.wikipedia.org/wiki/Post/Redirect/Get
The most common way to implement this pattern in ASP.Net is to use Response.Redirect(Request.RawUrl)
Consider the differences between Redirect and Transfer. Transfer really isn't telling the browser to forward to a clear form, it's simply returning a cleared form. That may or may not be what you want.
Response.Redirect() does not a waste round trip. If you post to a script that clears the form by Server.Transfer() and reload you will be asked to repost by most browsers since the last action was a HTTP POST. This may cause your users to unintentionally repeat some action, eg. place a second order which will have to be voided later.
Reading HTML content from a UIWebView
Note that the NSString stringWithContentsOfURL will report a totally different user-agent string than the UIWebView making the same request. So if your server is user-agent aware, and sending back different html depending on who is asking for it, you may not get correct results this way.
Also note that the @"document.body.innerHTML" mentioned above will only display what is in the body tag. If you use @"document.all[0].innerHTML" you will get both head and body. Which is still not the complete contents of the UIWebView, since it will not get back the !doctype or html tags, but it is a lot closer.
Styling the last td in a table with css
Javascript is the only viable way to do this client side (that is, CSS won't help you). In jQuery:
$("table td:last").css("border", "none");
How to insert logo with the title of a HTML page?
Put this in the <head> section:
<link rel="icon" href="http://www.domain.com/favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="http://www.domain.com/favicon.ico" type="image/x-icon" />
Keep the picture file named "favicon.ico". You'll have to look online to get a .ico file generator.
Does HTML5 <video> playback support the .avi format?
The HTML specification never specifies any content formats. That's not its job. There's plenty of standards organizations that are more qualified than the W3C to specify video formats.
That's what content negotiation is for.
- The HTML specification doesn't specify any image formats for the
<img>element. - The HTML specification doesn't specify any style sheet languages for the
<style>element. - The HTML specification doesn't specify any scripting languages for the
<script>element. - The HTML specification doesn't specify any object formats for the
<object>andembedelements. - The HTML specification doesn't specify any audio formats for the
<audio>element.
Why should it specify one for the <video> element?
Copy every nth line from one sheet to another
If your original data is in column form with multiple columns and the first entry of your original data in C42, and you want your new (down-sampled) data to be in column form as well, but only every seventh row, then you will also need to subtract out the row number of the first entry, like so:
=OFFSET(C$42,(ROW(C42)-ROW(C$42))*7,0)
Get Selected Item Using Checkbox in Listview
Assuming you want to get items of row whose check boxes are checked at the click of a button. Assumption based on your title "Get Selected Item Using Checkbox in Listview when I click a Button".
Try the below. Make only changes as below. Keep the rest the same.
Explanation and discussion on the topic @
https://groups.google.com/forum/?fromgroups#!topic/android-developers/No0LrgJ6q2M
MainActivity.java
public class MainActivity extends Activity {
AppInfoAdapter adapter ;
AppInfo app_info[] ;
@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ListView listApplication = (ListView)findViewById(R.id.listApplication);
Button b= (Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
StringBuilder result = new StringBuilder();
for(int i=0;i<adapter.mCheckStates.size();i++)
{
if(adapter.mCheckStates.get(i)==true)
{
result.append(app_info[i].applicationName);
result.append("\n");
}
}
Toast.makeText(MainActivity.this, result, 1000).show();
}
});
ApplicationInfo applicationInfo = getApplicationInfo();
PackageManager pm = getPackageManager();
List<PackageInfo> pInfo = new ArrayList<PackageInfo>();
pInfo.addAll(pm.getInstalledPackages(0));
app_info = new AppInfo[pInfo.size()];
int counter = 0;
for(PackageInfo item: pInfo){
try{
applicationInfo = pm.getApplicationInfo(item.packageName, 1);
app_info[counter] = new AppInfo(pm.getApplicationIcon(applicationInfo),
String.valueOf(pm.getApplicationLabel(applicationInfo)));
System.out.println(counter);
}
catch(Exception e){
System.out.println(e.getMessage());
}
counter++;
}
adapter = new AppInfoAdapter(this, R.layout.listview_item_row, app_info);
listApplication.setAdapter(adapter);
}
}
activity_main.xml ListView with button at the buton
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<ListView
android:layout_width="fill_parent"
android:id="@+id/listApplication"
android:layout_height="fill_parent"
android:layout_above="@+id/button1"
android:text="@string/hello_world" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Button" />
</RelativeLayout>
AppInfoAdapter
public class AppInfoAdapter extends ArrayAdapter<AppInfo> implements CompoundButton.OnCheckedChangeListener
{ SparseBooleanArray mCheckStates;
Context context;
int layoutResourceId;
AppInfo data[] = null;
public AppInfoAdapter(Context context, int layoutResourceId, AppInfo[] data){
super(context, layoutResourceId,data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
mCheckStates = new SparseBooleanArray(data.length);
}
@Override
public View getView(int position, View convertView, ViewGroup parent){
View row = convertView;
AppInfoHolder holder= null;
if (row == null){
LayoutInflater inflater = ((Activity)context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new AppInfoHolder();
holder.imgIcon = (ImageView) row.findViewById(R.id.imageView1);
holder.txtTitle = (TextView) row.findViewById(R.id.textView1);
holder.chkSelect = (CheckBox) row.findViewById(R.id.checkBox1);
row.setTag(holder);
}
else{
holder = (AppInfoHolder)row.getTag();
}
AppInfo appinfo = data[position];
holder.txtTitle.setText(appinfo.applicationName);
holder.imgIcon.setImageDrawable(appinfo.icon);
// holder.chkSelect.setChecked(true);
holder.chkSelect.setTag(position);
holder.chkSelect.setChecked(mCheckStates.get(position, false));
holder.chkSelect.setOnCheckedChangeListener(this);
return row;
}
public boolean isChecked(int position) {
return mCheckStates.get(position, false);
}
public void setChecked(int position, boolean isChecked) {
mCheckStates.put(position, isChecked);
}
public void toggle(int position) {
setChecked(position, !isChecked(position));
}
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
mCheckStates.put((Integer) buttonView.getTag(), isChecked);
}
static class AppInfoHolder
{
ImageView imgIcon;
TextView txtTitle;
CheckBox chkSelect;
}
}
Here's the snap shot
How to fetch data from local JSON file on react native?
Take a look at this Github issue:
https://github.com/facebook/react-native/issues/231
They are trying to require non-JSON files, in particular JSON. There is no method of doing this right now, so you either have to use AsyncStorage as @CocoOS mentioned, or you could write a small native module to do what you need to do.
Error: request entity too large
The following worked for me... Just use
app.use(bodyParser({limit: '50mb'}));
that's it.
Tried all above and none worked. Found that even though we use like the following,
app.use(bodyParser());
app.use(bodyParser({limit: '50mb'}));
app.use(bodyParser.urlencoded({limit: '50mb'}));
only the 1st app.use(bodyParser()); one gets defined and the latter two lines were ignored.
Refer: https://github.com/expressjs/body-parser/issues/176 >> see 'dougwilson commented on Jun 17, 2016'
Create table variable in MySQL
Perhaps a temporary table will do what you want.
CREATE TEMPORARY TABLE SalesSummary (
product_name VARCHAR(50) NOT NULL
, total_sales DECIMAL(12,2) NOT NULL DEFAULT 0.00
, avg_unit_price DECIMAL(7,2) NOT NULL DEFAULT 0.00
, total_units_sold INT UNSIGNED NOT NULL DEFAULT 0
) ENGINE=MEMORY;
INSERT INTO SalesSummary
(product_name, total_sales, avg_unit_price, total_units_sold)
SELECT
p.name
, SUM(oi.sales_amount)
, AVG(oi.unit_price)
, SUM(oi.quantity_sold)
FROM OrderItems oi
INNER JOIN Products p
ON oi.product_id = p.product_id
GROUP BY p.name;
/* Just output the table */
SELECT * FROM SalesSummary;
/* OK, get the highest selling product from the table */
SELECT product_name AS "Top Seller"
FROM SalesSummary
ORDER BY total_sales DESC
LIMIT 1;
/* Explicitly destroy the table */
DROP TABLE SalesSummary;
From forge.mysql.com. See also the temporary tables piece of this article.
Floating elements within a div, floats outside of div. Why?
You can easily do with first you can make the div flex and apply justify content right or left and your problem is solved.
<div style="display: flex;padding-bottom: 8px;justify-content: flex-end;">_x000D_
<button style="font-weight: bold;outline: none;background-color: #2764ff;border-radius: 3px;margin-left: 12px;border: none;padding: 3px 6px;color: white;text-align: center;font-family: 'Open Sans', sans-serif;text-decoration: none;margin-right: 14px;">Sense</button>_x000D_
</div>How to inherit constructors?
Yes, you have to copy all 387 constructors. You can do some reuse by redirecting them:
public Bar(int i): base(i) {}
public Bar(int i, int j) : base(i, j) {}
but that's the best you can do.
How to pass optional arguments to a method in C++?
With the introduction of std::optional in C++17 you can pass optional arguments:
#include <iostream>
#include <string>
#include <optional>
void myfunc(const std::string& id, const std::optional<std::string>& param = std::nullopt)
{
std::cout << "id=" << id << ", param=";
if (param)
std::cout << *param << std::endl;
else
std::cout << "<parameter not set>" << std::endl;
}
int main()
{
myfunc("first");
myfunc("second" , "something");
}
Output:
id=first param=<parameter not set>
id=second param=something
ActionBarActivity cannot resolve a symbol
If the same error occurs in ADT/Eclipse
Add Action Bar Sherlock library in your project.
Now, to remove the "import The import android.support.v7 cannot be resolved" error download a jar file named as android-support-v7-appcompat.jar and add it in your project lib folder.
This will surely removes your both errors.
Getting "net::ERR_BLOCKED_BY_CLIENT" error on some AJAX calls
AdBlockers usually have some rules, i.e. they match the URIs against some type of expression (sometimes they also match the DOM against expressions, not that this matters in this case).
Having rules and expressions that just operate on a tiny bit of text (the URI) is prone to create some false-positives...
Besides instructing your users to disable their extensions (at least on your site) you can also get the extension and test which of the rules/expressions blocked your stuff, provided the extension provides enough details about that. Once you identified the culprit, you can either try to avoid triggering the rule by using different URIs, report the rule as incorrect or overly-broad to the team that created it, or both. Check the docs for a particular add-on on how to do that.
For example, AdBlock Plus has a Blockable items view that shows all blocked items on a page and the rules that triggered the block. And those items also including XHR requests.
Maximum value of maxRequestLength?
Right value is below. (Tried)
maxRequestLength="2147483647" targetFramework="4.5.2"/>
Trim spaces from end of a NSString
In Swift
To trim space & newline from both side of the String:
var url: String = "\n http://example.com/xyz.mp4 "
var trimmedUrl: String = url.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
Serializing enums with Jackson
Use @JsonCreator annotation, create method getType(), is serialize with toString or object working
{"ATIVO"}
or
{"type": "ATIVO", "descricao": "Ativo"}
...
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.JsonNodeType;
@JsonFormat(shape = JsonFormat.Shape.OBJECT)
public enum SituacaoUsuario {
ATIVO("Ativo"),
PENDENTE_VALIDACAO("Pendente de Validação"),
INATIVO("Inativo"),
BLOQUEADO("Bloqueado"),
/**
* Usuarios cadastrados pelos clientes que não possuem acesso a aplicacao,
* caso venham a se cadastrar este status deve ser alterado
*/
NAO_REGISTRADO("Não Registrado");
private SituacaoUsuario(String descricao) {
this.descricao = descricao;
}
private String descricao;
public String getDescricao() {
return descricao;
}
// TODO - Adicionar metodos dinamicamente
public String getType() {
return this.toString();
}
public String getPropertieKey() {
StringBuilder sb = new StringBuilder("enum.");
sb.append(this.getClass().getName()).append(".");
sb.append(toString());
return sb.toString().toLowerCase();
}
@JsonCreator
public static SituacaoUsuario fromObject(JsonNode node) {
String type = null;
if (node.getNodeType().equals(JsonNodeType.STRING)) {
type = node.asText();
} else {
if (!node.has("type")) {
throw new IllegalArgumentException();
}
type = node.get("type").asText();
}
return valueOf(type);
}
}
FULL OUTER JOIN vs. FULL JOIN
Microsoft® SQL Server™ 2000 uses these SQL-92 keywords for outer joins specified in a FROM clause:
LEFT OUTER JOIN or LEFT JOIN
RIGHT OUTER JOIN or RIGHT JOIN
FULL OUTER JOIN or FULL JOIN
From MSDN
The full outer join or full join returns all rows from both tables, matching up the rows wherever a match can be made and placing NULLs in the places where no matching row exists.
Rename all files in directory from $filename_h to $filename_half?
for i in *_h.png ; do
mv $i `echo "$i"|awk -F'.' '{print $1"alf."$2}'`
done
How to get all columns' names for all the tables in MySQL?
To list all the fields from a table in MySQL:
select *
from information_schema.columns
where table_schema = 'your_DB_name'
and table_name = 'Your_tablename'
How do I convert an object to an array?
You can quickly convert deeply nested objects to associative arrays by relying on the behavior of the JSON encode/decode functions:
$array = json_decode(json_encode($response->response->docs), true);
Resizing image in Java
If you have an java.awt.Image, rezising it doesn't require any additional libraries. Just do:
Image newImage = yourImage.getScaledInstance(newWidth, newHeight, Image.SCALE_DEFAULT);
Ovbiously, replace newWidth and newHeight with the dimensions of the specified image.
Notice the last parameter: it tells to the runtime the algorithm you want to use for resizing.
There are algorithms that produce a very precise result, however these take a large time to complete.
You can use any of the following algorithms:
Image.SCALE_DEFAULT: Use the default image-scaling algorithm.Image.SCALE_FAST: Choose an image-scaling algorithm that gives higher priority to scaling speed than smoothness of the scaled image.Image.SCALE_SMOOTH: Choose an image-scaling algorithm that gives higher priority to image smoothness than scaling speed.Image.SCALE_AREA_AVERAGING: Use the Area Averaging image scaling algorithm.Image.SCALE_REPLICATE: Use the image scaling algorithm embodied in theReplicateScaleFilterclass.
See the Javadoc for more info.
Differences between dependencyManagement and dependencies in Maven
If you have a parent-pom anyways, then in my opinion using <dependencyManagement> just for controlling the version (and maybe scope) is a waste of space and confuses junior developers.
You will probably have properties for versions anyways, in some kind of parent-pom file. Why not just use this properties in the child pom's? That way you can still update a version in the property (within parent-pom) for all child projects at once. That has the same effect as <dependencyManagement> just without <dependencyManagement>.
In my opinion, <dependencyManagement> should be used for "real" management of dependencies, like exclusions and the like.
CentOS 64 bit bad ELF interpreter
Just wanted to add a comment in BRPocock, but I don't have the sufficient privilegies.
So my contribution was for everyone trying to install IBM Integration Toolkit from IBM's Integration Bus bundle.
When you try to run "Installation Manager" command from folder /Integration_Toolkit/IM_Linux (the file to run is "install") you get the error showed in this post.
Further instructions to fix this problem you'll find in this IBM's web page: https://www-304.ibm.com/support/docview.wss?uid=swg21459143
Hope this helps for anybody trying to install that.
Insert some string into given string at given index in Python
line='Name Age Group Class Profession'
arr = line.split()
for i in range(3):
arr.insert(2, arr[2])
print(' '.join(arr))
Use of contains in Java ArrayList<String>
ArrayList<String> newlyAddedTypes=new ArrayList<String>();
.....
newlyAddedTypes.add("test1");
newlyAddedTypes.add("test1");
newlyAddedTypes.add("test2");
if(newlyAddedTypes.contain("test"){
//called here
}
else{
}
How to get controls in WPF to fill available space?
There are also some properties you can set to force a control to fill its available space when it would otherwise not do so. For example, you can say:
HorizontalContentAlignment="Stretch"
... to force the contents of a control to stretch horizontally. Or you can say:
HorizontalAlignment="Stretch"
... to force the control itself to stretch horizontally to fill its parent.
Spring boot - configure EntityManager
Hmmm you can find lot of examples for configuring spring framework. Anyways here is a sample
@Configuration
@Import({PersistenceConfig.class})
@ComponentScan(basePackageClasses = {
ServiceMarker.class,
RepositoryMarker.class }
)
public class AppConfig {
}
PersistenceConfig
@Configuration
@PropertySource(value = { "classpath:database/jdbc.properties" })
@EnableTransactionManagement
public class PersistenceConfig {
private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect";
private static final String PROPERTY_NAME_HIBERNATE_MAX_FETCH_DEPTH = "hibernate.max_fetch_depth";
private static final String PROPERTY_NAME_HIBERNATE_JDBC_FETCH_SIZE = "hibernate.jdbc.fetch_size";
private static final String PROPERTY_NAME_HIBERNATE_JDBC_BATCH_SIZE = "hibernate.jdbc.batch_size";
private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql";
private static final String[] ENTITYMANAGER_PACKAGES_TO_SCAN = {"a.b.c.entities", "a.b.c.converters"};
@Autowired
private Environment env;
@Bean(destroyMethod = "close")
public DataSource dataSource() {
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName(env.getProperty("jdbc.driverClassName"));
dataSource.setUrl(env.getProperty("jdbc.url"));
dataSource.setUsername(env.getProperty("jdbc.username"));
dataSource.setPassword(env.getProperty("jdbc.password"));
return dataSource;
}
@Bean
public JpaTransactionManager jpaTransactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactoryBean().getObject());
return transactionManager;
}
private HibernateJpaVendorAdapter vendorAdaptor() {
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setShowSql(true);
return vendorAdapter;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setJpaVendorAdapter(vendorAdaptor());
entityManagerFactoryBean.setDataSource(dataSource());
entityManagerFactoryBean.setPersistenceProviderClass(HibernatePersistenceProvider.class);
entityManagerFactoryBean.setPackagesToScan(ENTITYMANAGER_PACKAGES_TO_SCAN);
entityManagerFactoryBean.setJpaProperties(jpaHibernateProperties());
return entityManagerFactoryBean;
}
private Properties jpaHibernateProperties() {
Properties properties = new Properties();
properties.put(PROPERTY_NAME_HIBERNATE_MAX_FETCH_DEPTH, env.getProperty(PROPERTY_NAME_HIBERNATE_MAX_FETCH_DEPTH));
properties.put(PROPERTY_NAME_HIBERNATE_JDBC_FETCH_SIZE, env.getProperty(PROPERTY_NAME_HIBERNATE_JDBC_FETCH_SIZE));
properties.put(PROPERTY_NAME_HIBERNATE_JDBC_BATCH_SIZE, env.getProperty(PROPERTY_NAME_HIBERNATE_JDBC_BATCH_SIZE));
properties.put(PROPERTY_NAME_HIBERNATE_SHOW_SQL, env.getProperty(PROPERTY_NAME_HIBERNATE_SHOW_SQL));
properties.put(AvailableSettings.SCHEMA_GEN_DATABASE_ACTION, "none");
properties.put(AvailableSettings.USE_CLASS_ENHANCER, "false");
return properties;
}
}
Main
public static void main(String[] args) {
try (GenericApplicationContext springContext = new AnnotationConfigApplicationContext(AppConfig.class)) {
MyService myService = springContext.getBean(MyServiceImpl.class);
try {
myService.handleProcess(fromDate, toDate);
} catch (Exception e) {
logger.error("Exception occurs", e);
myService.handleException(fromDate, toDate, e);
}
} catch (Exception e) {
logger.error("Exception occurs in loading Spring context: ", e);
}
}
MyService
@Service
public class MyServiceImpl implements MyService {
@Inject
private MyDao myDao;
@Override
public void handleProcess(String fromDate, String toDate) {
List<Student> myList = myDao.select(fromDate, toDate);
}
}
MyDaoImpl
@Repository
@Transactional
public class MyDaoImpl implements MyDao {
@PersistenceContext
private EntityManager entityManager;
public Student select(String fromDate, String toDate){
TypedQuery<Student> query = entityManager.createNamedQuery("Student.findByKey", Student.class);
query.setParameter("fromDate", fromDate);
query.setParameter("toDate", toDate);
List<Student> list = query.getResultList();
return CollectionUtils.isEmpty(list) ? null : list;
}
}
Assuming maven project:
Properties file should be in src/main/resources/database folder
jdbc.properties file
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=your db url
jdbc.username=your Username
jdbc.password=Your password
hibernate.max_fetch_depth = 3
hibernate.jdbc.fetch_size = 50
hibernate.jdbc.batch_size = 10
hibernate.show_sql = true
ServiceMarker and RepositoryMarker are just empty interfaces in your service or repository impl package.
Let's say you have package name a.b.c.service.impl. MyServiceImpl is in this package and so is ServiceMarker.
public interface ServiceMarker {
}
Same for repository marker. Let's say you have a.b.c.repository.impl or a.b.c.dao.impl package name. Then MyDaoImpl is in this this package and also Repositorymarker
public interface RepositoryMarker {
}
a.b.c.entities.Student
//dummy class and dummy query
@Entity
@NamedQueries({
@NamedQuery(name="Student.findByKey", query="select s from Student s where s.fromDate=:fromDate" and s.toDate = :toDate)
})
public class Student implements Serializable {
private LocalDateTime fromDate;
private LocalDateTime toDate;
//getters setters
}
a.b.c.converters
@Converter(autoApply = true)
public class LocalDateTimeConverter implements AttributeConverter<LocalDateTime, Timestamp> {
@Override
public Timestamp convertToDatabaseColumn(LocalDateTime dateTime) {
if (dateTime == null) {
return null;
}
return Timestamp.valueOf(dateTime);
}
@Override
public LocalDateTime convertToEntityAttribute(Timestamp timestamp) {
if (timestamp == null) {
return null;
}
return timestamp.toLocalDateTime();
}
}
pom.xml
<properties>
<java-version>1.8</java-version>
<org.springframework-version>4.2.1.RELEASE</org.springframework-version>
<hibernate-entitymanager.version>5.0.2.Final</hibernate-entitymanager.version>
<commons-dbcp2.version>2.1.1</commons-dbcp2.version>
<mysql-connector-java.version>5.1.36</mysql-connector-java.version>
<junit.version>4.12</junit.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate-entitymanager.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>${commons-dbcp2.version}</version>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>${java-version}</source>
<target>${java-version}</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
</plugins>
</build>
Hope it helps. Thanks
How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class?
try this:
public class SomAsyncTask extends AsyncTask<String, Integer, JSONObject> {
private CallBack callBack;
public interface CallBack {
void async( JSONObject jsonResult );
void sync( JSONObject jsonResult );
void progress( Integer... status );
void cancel();
}
public SomAsyncTask(CallBack callBack) {
this.callBack = callBack;
}
@Override
protected JSONObject doInBackground(String... strings) {
JSONObject dataJson = null;
//TODO query, get some dataJson
if(this.callBack != null)
this.callBack.async( dataJson );// asynchronize with MAIN LOOP THREAD
return dataJson;
}
@Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
if(this.callBack != null)
this.callBack.progress(values);// synchronize with MAIN LOOP THREAD
}
@Override
protected void onPostExecute(JSONObject jsonObject) {
super.onPostExecute(jsonObject);
if(this.callBack != null)
this.callBack.sync(jsonObject);// synchronize with MAIN LOOP THREAD
}
@Override
protected void onCancelled() {
super.onCancelled();
if(this.callBack != null)
this.callBack.cancel();
}
}
And usage example:
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Context _localContext = getContext();
SomeAsyncTask.CallBack someCallBack = new SomeAsyncTask.CallBack() {
@Override
public void async(JSONObject jsonResult) {//async thread
//some async process, e.g. send data to server...
}
@Override
public void sync(JSONObject jsonResult) {//sync thread
//get result...
//get some resource of Activity variable...
Resources resources = _localContext.getResources();
}
@Override
public void progress(Integer... status) {//sync thread
//e.g. change status progress bar...
}
@Override
public void cancel() {
}
};
new SomeAsyncTask( someCallBack )
.execute("someParams0", "someParams1", "someParams2");
}
Get current working directory in a Qt application
Thank you RedX and Kaz for your answers. I don't get why by me it gives the path of the exe. I found an other way to do it :
QString pwd("");
char * PWD;
PWD = getenv ("PWD");
pwd.append(PWD);
cout << "Working directory : " << pwd << flush;
It is less elegant than a single line... but it works for me.
Using jQuery to test if an input has focus
I'm not entirely sure what you're after but this sounds like it can be achieved by storing the state of the input elements (or the div?) as a variable:
$('div').each(function(){
var childInputHasFocus = false;
$(this).hover(function(){
if (childInputHasFocus) {
// do something
} else { }
}, function() {
if (childInputHasFocus) {
// do something
} else { }
});
$('input', this)
.focus(function(){
childInputHasFocus = true;
})
.blur(function(){
childInputHasFocus = false;
});
});
Exploring Docker container's file system
If you are using Docker v19.03, you follow the below steps.
# find ID of your running container:
docker ps
# create image (snapshot) from container filesystem
docker commit 12345678904b5 mysnapshot
# explore this filesystem
docker run -t -i mysnapshot /bin/sh
How can I view array structure in JavaScript with alert()?
I'd recommend using toString().
Ex. alert(array.toString()), or console.log(array.toString())
Solution for "Fatal error: Maximum function nesting level of '100' reached, aborting!" in PHP
You can also modify the {debug} function in modifier.debug_print_var.php, in order to limit its recursion into objects.
Around line 45, before :
$results .= '<br>' . str_repeat(' ', $depth * 2)
. '<b> ->' . strtr($curr_key, $_replace) . '</b> = '
. smarty_modifier_debug_print_var($curr_val, ++$depth, $length);
After :
$max_depth = 10;
$results .= '<br>' . str_repeat(' ', $depth * 2)
. '<b> ->' . strtr($curr_key, $_replace) . '</b> = '
. ($depth > $max_depth ? 'Max recursion depth:'.(++$depth) : smarty_modifier_debug_print_var($curr_val, ++$depth, $length));
This way, Xdebug will still behave normally: limit recursion depth in var_dump and so on. As this is a smarty problem, not a Xdebug one!
Can multiple different HTML elements have the same ID if they're different elements?
Nope, IDs have to be unique. You can use classes for that purpose
<div class="a" /><div class="a b" /><span class="a" />
div.a {font: ...;}
/* or just: */
.a {prop: value;}
How to find the statistical mode?
Here, another solution:
freq <- tapply(mySamples,mySamples,length)
#or freq <- table(mySamples)
as.numeric(names(freq)[which.max(freq)])
EOFException - how to handle?
You can use while(in.available() != 0) instead of while(true).
Deleting a pointer in C++
int value, *ptr;
value = 8;
ptr = &value;
// ptr points to value, which lives on a stack frame.
// you are not responsible for managing its lifetime.
ptr = new int;
delete ptr;
// yes this is the normal way to manage the lifetime of
// dynamically allocated memory, you new'ed it, you delete it.
ptr = nullptr;
delete ptr;
// this is illogical, essentially you are saying delete nothing.
Get an array of list element contents in jQuery
kimstik was close, but not quite.
Here's how to do it in a convenient one-liner:
$.map( $('li'), function (element) { return $(element).text() });
Here's the full documentation for jQuery's map function, it's quite handy: http://api.jquery.com/jQuery.map/
Just to answer fully, here's the complete functionality you were looking for:
$.map( $('li'), function (element) { return $(element).text() }).join(', ');
How do I install Python libraries in wheel format?
You want to install a downloaded wheel (.whl) file on Python under Windows?
- Install pip on your Python(s) on Windows (on Python 3.4+ it is already included)
Upgrade pip if necessary (on the command line)
pip install -U pipInstall a local wheel file using pip (on the command line)
pip install --no-index --find-links=LocalPathToWheelFile PackageName
Option --no-index tells pip to not look on pypi.python.org (which would fail for many packages if you have no compiler installed), --find-links then tells pip where to look for instead. PackageName is the name of the package (numpy, scipy, .. first part or whole of wheel file name). For more informations see the install options of pip.
You can execute these commands in the command prompt when switching to your Scripts folder of your Python installation.
Example:
cd C:\Python27\Scripts
pip install -U pip
pip install --no-index --find-links=LocalPathToWheelFile PackageName
Note: It can still be that the package does not install on Windows because it may contain C/C++ source files which need to be compiled. You would need then to make sure a compiler is installed. Often searching for alternative pre-compiled distributions is the fastest way out.
For example numpy-1.9.2+mkl-cp27-none-win_amd64.whl has PackageName numpy.
java doesn't run if structure inside of onclick listener
both your conditions are the same:
if(s < f) { calc = f - s; n = s; }else if(f > s){ calc = s - f; n = f; } so
if(s < f) and
}else if(f > s){ are the same
change to
}else if(f < s){ Can an ASP.NET MVC controller return an Image?
Why not go simple and use the tilde ~ operator?
public FileResult TopBanner() {
return File("~/Content/images/topbanner.png", "image/png");
}
Adding image inside table cell in HTML
You have referenced the image as a path on your computer (C:\etc\etc)......is it located there? You didn't answer what others have asked. I have taken your code, placed it in dreamweaver and it works apart from the image as I don't have that stored.
Check the location and then let us know.
How to acces external json file objects in vue.js app
Just assign the import to a data property
<script>
import json from './json/data.json'
export default{
data(){
return{
myJson: json
}
}
}
</script>
then loop through the myJson property in your template using v-for
<template>
<div>
<div v-for="data in myJson">{{data}}</div>
</div>
</template>
NOTE
If the object you want to import is static i.e does not change then assigning it to a data property would make no sense as it does not need to be reactive.
Vue converts all the properties in the data option to getters/setters for the properties to be reactive. So it would be unnecessary and overhead for vue to setup getters/setters for data which is not going to change. See Reactivity in depth.
So you can create a custom option as follows:
<script>
import MY_JSON from './json/data.json'
export default{
//custom option named myJson
myJson: MY_JSON
}
</script>
then loop through the custom option in your template using $options:
<template>
<div>
<div v-for="data in $options.myJson">{{data}}</div>
</div>
</template>
git discard all changes and pull from upstream
You can do it in a single command:
git fetch --all && git reset --hard origin/master
Or in a pair of commands:
git fetch --all
git reset --hard origin/master
Note than you will lose ALL your local changes
How to avoid 'undefined index' errors?
Same idea as Michael Waterfall
From CodeIgniter
// Lets you determine whether an array index is set and whether it has a value.
// If the element is empty it returns FALSE (or whatever you specify as the default value.)
function element($item, $array, $default = FALSE)
{
if ( ! isset($array[$item]) OR $array[$item] == "")
{
return $default;
}
return $array[$item];
}
How to add image background to btn-default twitter-bootstrap button?
<!-- Latest compiled and minified CSS -->_x000D_
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">_x000D_
_x000D_
<!-- Optional theme -->_x000D_
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">_x000D_
_x000D_
<!-- Latest compiled and minified JavaScript -->_x000D_
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>_x000D_
_x000D_
_x000D_
<style type="text/css">_x000D_
.sign-in-facebook_x000D_
{_x000D_
background-image: url('http://i.stack.imgur.com/e2S63.png');_x000D_
background-position: -9px -7px;_x000D_
background-repeat: no-repeat;_x000D_
background-size: 39px 43px;_x000D_
padding-left: 41px;_x000D_
color: #000;_x000D_
}_x000D_
.sign-in-facebook:hover_x000D_
{_x000D_
background-image: url('http://i.stack.imgur.com/e2S63.png');_x000D_
background-position: -9px -7px;_x000D_
background-repeat: no-repeat;_x000D_
background-size: 39px 43px;_x000D_
padding-left: 41px;_x000D_
color: #000;_x000D_
}_x000D_
</style>_x000D_
<p>My current button got white background<br/>_x000D_
<input type="button" value="Sign In with Facebook" class="sign-in-facebook btn btn-secondary" style="margin-top:2px; margin-bottom:2px;" >_x000D_
</p>_x000D_
<p>I need the current btn-default style like below<br/>_x000D_
<input type="button" class="btn btn-default" value="Sign In with Facebook" />_x000D_
</p>_x000D_
<strong>NOTE:</strong> facebook icon at left side of the button.How to enter ssh password using bash?
Create a new keypair: (go with the defaults)
ssh-keygen
Copy the public key to the server: (password for the last time)
ssh-copy-id [email protected]
From now on the server should recognize your key and not ask you for the password anymore:
ssh [email protected]
"Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP
Notice: Undefined variable
From the vast wisdom of the PHP Manual:
Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not in the case of appending elements to the uninitialized array. isset() language construct can be used to detect if a variable has been already initialized. Additionally and more ideal is the solution of empty() since it does not generate a warning or error message if the variable is not initialized.
From PHP documentation:
No warning is generated if the variable does not exist. That means empty() is essentially the concise equivalent to !isset($var) || $var == false.
This means that you could use only empty() to determine if the variable is set, and in addition it checks the variable against the following, 0, 0.0, "", "0", null, false or [].
Example:
$o = [];
@$var = ["",0,null,1,2,3,$foo,$o['myIndex']];
array_walk($var, function($v) {
echo (!isset($v) || $v == false) ? 'true ' : 'false';
echo ' ' . (empty($v) ? 'true' : 'false');
echo "\n";
});
Test the above snippet in the 3v4l.org online PHP editor
Although PHP does not require a variable declaration, it does recommend it in order to avoid some security vulnerabilities or bugs where one would forget to give a value to a variable that will be used later in the script. What PHP does in the case of undeclared variables is issue a very low level error, E_NOTICE, one that is not even reported by default, but the Manual advises to allow during development.
Ways to deal with the issue:
Recommended: Declare your variables, for example when you try to append a string to an undefined variable. Or use
isset()/!empty()to check if they are declared before referencing them, as in://Initializing variable $value = ""; //Initialization value; Examples //"" When you want to append stuff later //0 When you want to add numbers later //isset() $value = isset($_POST['value']) ? $_POST['value'] : ''; //empty() $value = !empty($_POST['value']) ? $_POST['value'] : '';This has become much cleaner as of PHP 7.0, now you can use the null coalesce operator:
// Null coalesce operator - No need to explicitly initialize the variable. $value = $_POST['value'] ?? '';Set a custom error handler for E_NOTICE and redirect the messages away from the standard output (maybe to a log file):
set_error_handler('myHandlerForMinorErrors', E_NOTICE | E_STRICT)Disable E_NOTICE from reporting. A quick way to exclude just
E_NOTICEis:error_reporting( error_reporting() & ~E_NOTICE )Suppress the error with the @ operator.
Note: It's strongly recommended to implement just point 1.
Notice: Undefined index / Undefined offset
This notice appears when you (or PHP) try to access an undefined index of an array.
Ways to deal with the issue:
Check if the index exists before you access it. For this you can use
isset()orarray_key_exists()://isset() $value = isset($array['my_index']) ? $array['my_index'] : ''; //array_key_exists() $value = array_key_exists('my_index', $array) ? $array['my_index'] : '';The language construct
list()may generate this when it attempts to access an array index that does not exist:list($a, $b) = array(0 => 'a'); //or list($one, $two) = explode(',', 'test string');
Two variables are used to access two array elements, however there is only one array element, index 0, so this will generate:
Notice: Undefined offset: 1
$_POST / $_GET / $_SESSION variable
The notices above appear often when working with $_POST, $_GET or $_SESSION. For $_POST and $_GET you just have to check if the index exists or not before you use them. For $_SESSION you have to make sure you have the session started with session_start() and that the index also exists.
Also note that all 3 variables are superglobals and are uppercase.
Related:
Cast Object to Generic Type for returning
If you do not want to depend on throwing exception (which you probably should not) you can try this:
public static <T> T cast(Object o, Class<T> clazz) {
return clazz.isInstance(o) ? clazz.cast(o) : null;
}
What does DIM stand for in Visual Basic and BASIC?
Back in the day DIM reserved memory for the array and when memory was limited you had to be careful how you used it. I once wrote (in 1981) a BASIC program on TRS-80 Model III with 48Kb RAM. It wouldn't run on a similar machine with 16Kb RAM until I decreased the array size by changing the DIM statement
Convert Datetime column from UTC to local time in select statement
The UNIX timestamp is merely the number of seconds between a particular date and the Unix Epoch,
SELECT DATEDIFF(SECOND,{d '1970-01-01'},GETDATE()) // This Will Return the UNIX timestamp In SQL server
you can create a function for local date time to Unix UTC conversion using Country Offset Function to Unix Time Stamp In SQL server
Docker error cannot delete docker container, conflict: unable to remove repository reference
If you have multiples docker containers launched, use this
$ docker rm $(docker ps -aq)
It will remove all the current dockers listed in the "ps -aq" command.
Source : aaam on https://github.com/docker/docker/issues/12487
iterating through json object javascript
An improved version for recursive approach suggested by @schirrmacher to print key[value] for the entire object:
var jDepthLvl = 0;
function visit(object, objectAccessor=null) {
jDepthLvl++;
if (isIterable(object)) {
if(objectAccessor === null) {
console.log("%c ? ? printing object $OBJECT_OR_ARRAY$ -- START ? ?", "background:yellow");
} else
console.log("%c"+spacesDepth(jDepthLvl)+objectAccessor+"%c:","color:purple;font-weight:bold", "color:black");
forEachIn(object, function (accessor, child) {
visit(child, accessor);
});
} else {
var value = object;
console.log("%c"
+ spacesDepth(jDepthLvl)
+ objectAccessor + "[%c" + value + "%c] "
,"color:blue","color:red","color:blue");
}
if(objectAccessor === null) {
console.log("%c ? ? printing object $OBJECT_OR_ARRAY$ -- END ? ?", "background:yellow");
}
jDepthLvl--;
}
function spacesDepth(jDepthLvl) {
let jSpc="";
for (let jIter=0; jIter<jDepthLvl-1; jIter++) {
jSpc+="\u0020\u0020"
}
return jSpc;
}
function forEachIn(iterable, functionRef) {
for (var accessor in iterable) {
functionRef(accessor, iterable[accessor]);
}
}
function isIterable(element) {
return isArray(element) || isObject(element);
}
function isArray(element) {
return element.constructor == Array;
}
function isObject(element) {
return element.constructor == Object;
}
visit($OBJECT_OR_ARRAY$);
How to implement Enums in Ruby?
irb(main):016:0> num=[1,2,3,4]
irb(main):017:0> alph=['a','b','c','d']
irb(main):018:0> l_enum=alph.to_enum
irb(main):019:0> s_enum=num.to_enum
irb(main):020:0> loop do
irb(main):021:1* puts "#{s_enum.next} - #{l_enum.next}"
irb(main):022:1> end
Output:
1 - a
2 - b
3 - c
4 - d
How to change current Theme at runtime in Android
This had no effect for me:
public void changeTheme(int newTheme) {
setTheme(newTheme);
recreate();
}
But this worked:
int theme = R.style.default;
protected void onCreate(Bundle savedInstanceState) {
setTheme(this.theme);
super.onCreate(savedInstanceState);
}
public void changeTheme(int newTheme) {
this.theme = newTheme;
recreate();
}
How do I remove the last comma from a string using PHP?
It is better to use implode for that purpose. Implode is easy and awesome:
$array = ['name1', 'name2', 'name3'];
$str = implode(', ', $array);
Output:
name1, name2, name3
MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
Try this
SELECT t1.*
FROM
some_table t1,
(SELECT relevant_field
FROM some_table
GROUP BY relevant_field
HAVING COUNT (*) > 1) t2
WHERE
t1.relevant_field = t2.relevant_field;
img onclick call to JavaScript function
Well your onclick function works absolutely fine its your this line
window.external.values(a.value, b.value, c.value, d.value, e.value);
window.external is object and has no method name values
<html>
<head>
<script type="text/javascript">
function exportToForm(a,b,c,d,e) {
// window.external.values(a.value, b.value, c.value, d.value, e.value);
//use alert to check its working
alert("HELLO");
}
</script>
</head>
<body>
<img onclick="exportToForm('1.6','55','10','50','1');" src="China-Flag-256.png"/>
<button onclick="exportToForm('1.6','55','10','50','1');" style="background-color: #00FFFF">Export</button>
</body>
</html>
What's the difference between OpenID and OAuth?
More an extension to the question than an answer, but it may add some perspective to the great technical answers above. I'm an experienced programmer in a number of areas, but a total noob to programming for the web. Now trying to build a web-based application using Zend Framework.
Definitely will implement an application-specific basic username/password authentication interface, but recognize that for a growing number of users the thought of yet another username and password is a deterrent. While not exactly social networking, I know that a very large percentage of the application's potential users already have facebook or twitter accounts. The application doesn't really want or need to access information about the user's account from those sites, it just wants to offer the convenience of not requiring the user to set up new account credentials if they don't want to. From a functionality point of view, that would seem a poster child for OpenID. But it seems that neither facebook nor twitter are OpenID providers as such, though they do support OAuth authentication to access their user's data.
In all the articles I've read about the two and how they differ, it wan't until I saw Karl Anderson's observation above, that "OAuth can be used for authentication, which can be thought of as a no-op authorization" that I saw any explicit confirmation that OAuth was good enough for what I wanted to do.
In fact, when I went to post this "answer", not being a member at the time, I looked long and hard at the bottom of this page at the options for identifying myself. The option for using an OpenID login or obtaining one if I didn't have one, but nothing about twitter or facebook, seemed to suggest that OAuth wasn't adequate for the job. But then I opened another window and looked for the general signup process for stackoverflow - and lo and behold there's a slew of 3rd-party authentication options including facebook and twitter. In the end I decided to use my google id (which is an OpenID) for exactly the reason that I didn't want to grant stackoverflow access to my friends list and anything else facebook likes to share about its users - but at least it's a proof point that OAuth is adequate for the use I had in mind.
It would really be great if someone could either post info or pointers to info about supporting this kind of multiple 3rd-part authorization setup, and how you deal with users that revoke authorization or lose access to their 3rd party site. I also get the impression that my username here identifies a unique stackoverflow account that I could access with basic authentication if I wanted to set it up, and also access this same account through other 3rd-party authenticators (e.g. so that I would be considered logged in to stackoverflow if I was logged in to any of google, facebook, or twitter...). Since this site is doing it, somebody here probably has some pretty good insight on the subject. :-)
Sorry this was so long, and more a question than an answer - but Karl's remark made it seem like the most appropriate place to post amidst the volume of threads on OAuth and OpenID. If there's a better place for this that I didn't find, I apologize in advance, I did try.
How do I filter an array with TypeScript in Angular 2?
You need to put your code into ngOnInit and use the this keyword:
ngOnInit() {
this.booksByStoreID = this.books.filter(
book => book.store_id === this.store.id);
}
You need ngOnInit because the input store wouldn't be set into the constructor:
ngOnInit is called right after the directive's data-bound properties have been checked for the first time, and before any of its children have been checked. It is invoked only once when the directive is instantiated.
(https://angular.io/docs/ts/latest/api/core/index/OnInit-interface.html)
In your code, the books filtering is directly defined into the class content...
Error 405 (Method Not Allowed) Laravel 5
In my case the route in my router was:
Route::post('/new-order', 'Api\OrderController@initiateOrder')->name('newOrder');
and from the client app I was posting the request to:
https://my-domain/api/new-order/
So, because of the trailing slash I got a 405. Hope it helps someone
Stop mouse event propagation
I just checked in an Angular 6 application, the event.stopPropagation() works on an event handler without even passing $event
(click)="doSomething()" // does not require to pass $event
doSomething(){
// write any code here
event.stopPropagation();
}
How can I get the external SD card path for Android 4.0+?
Thanks for the clues provided by you guys, especially @SmartLemon, I got the solution. In case someone else need it, I put my final solution here( to find the first listed external SD card ):
public File getExternalSDCardDirectory()
{
File innerDir = Environment.getExternalStorageDirectory();
File rootDir = innerDir.getParentFile();
File firstExtSdCard = innerDir ;
File[] files = rootDir.listFiles();
for (File file : files) {
if (file.compareTo(innerDir) != 0) {
firstExtSdCard = file;
break;
}
}
//Log.i("2", firstExtSdCard.getAbsolutePath().toString());
return firstExtSdCard;
}
If no external SD card there, then it returns the on board storage. I will use it if the sdcard is not exist, you may need to change it.
Speed tradeoff of Java's -Xms and -Xmx options
I have found that in some cases too much memory can slow the program down.
For example I had a hibernate based transform engine that started running slowly as the load increased. It turned out that each time we got an object from the db, hibernate was checking memory for objects that would never be used again.
The solution was to evict the old objects from the session.
Stuart
How to create a new column in a select query
It depends what you wanted to do with that column e.g. here's an example of appending a new column to a recordset which can be updated on the client side:
Sub MSDataShape_AddNewCol()
Dim rs As ADODB.Recordset
Set rs = CreateObject("ADODB.Recordset")
With rs
.ActiveConnection = _
"Provider=MSDataShape;" & _
"Data Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:\Tempo\New_Jet_DB.mdb"
.Source = _
"SHAPE {" & _
" SELECT ExistingField" & _
" FROM ExistingTable" & _
" ORDER BY ExistingField" & _
"} APPEND NEW adNumeric(5, 4) AS NewField"
.LockType = adLockBatchOptimistic
.Open
Dim i As Long
For i = 0 To .RecordCount - 1
.Fields("NewField").Value = Round(.Fields("ExistingField").Value, 4)
.MoveNext
Next
rs.Save "C:\rs.xml", adPersistXML
End With
End Sub
How can I get selector from jQuery object
::WARNING::
.selector has been deprecated as of version 1.7, removed as of 1.9
The jQuery object has a selector property I saw when digging in its code yesterday. Don't know if it's defined in the docs are how reliable it is (for future proofing). But it works!
$('*').selector // returns *
Edit: If you were to find the selector inside the event, that information should ideally be part of the event itself and not the element because an element could have multiple click events assigned through various selectors. A solution would be to use a wrapper to around bind(), click() etc. to add events instead of adding it directly.
jQuery.fn.addEvent = function(type, handler) {
this.bind(type, {'selector': this.selector}, handler);
};
The selector is being passed as an object's property named selector. Access it as event.data.selector.
Let's try it on some markup (http://jsfiddle.net/DFh7z/):
<p class='info'>some text and <a>a link</a></p>?
$('p a').addEvent('click', function(event) {
alert(event.data.selector); // p a
});
Disclaimer: Remember that just as with live() events, the selector property may be invalid if DOM traversal methods are used.
<div><a>a link</a></div>
The code below will NOT work, as live relies on the selector property
which in this case is a.parent() - an invalid selector.
$('a').parent().live(function() { alert('something'); });
Our addEvent method will fire, but you too will see the wrong selector - a.parent().
Detect encoding and make everything UTF-8
This version is for German language but you can modifiy the $CHARSETS and the $TESTCHARS
class CharsetDetector
{
private static $CHARSETS = array(
"ISO_8859-1",
"ISO_8859-15",
"CP850"
);
private static $TESTCHARS = array(
"€",
"ä",
"Ä",
"ö",
"Ö",
"ü",
"Ü",
"ß"
);
public static function convert($string)
{
return self::__iconv($string, self::getCharset($string));
}
public static function getCharset($string)
{
$normalized = self::__normalize($string);
if(!strlen($normalized))return "UTF-8";
$best = "UTF-8";
$charcountbest = 0;
foreach (self::$CHARSETS as $charset) {
$str = self::__iconv($normalized, $charset);
$charcount = 0;
$stop = mb_strlen( $str, "UTF-8");
for( $idx = 0; $idx < $stop; $idx++)
{
$char = mb_substr( $str, $idx, 1, "UTF-8");
foreach (self::$TESTCHARS as $testchar) {
if($char == $testchar)
{
$charcount++;
break;
}
}
}
if($charcount>$charcountbest)
{
$charcountbest=$charcount;
$best=$charset;
}
//echo $text."<br />";
}
return $best;
}
private static function __normalize($str)
{
$len = strlen($str);
$ret = "";
for($i = 0; $i < $len; $i++){
$c = ord($str[$i]);
if ($c > 128) {
if (($c > 247)) $ret .=$str[$i];
elseif ($c > 239) $bytes = 4;
elseif ($c > 223) $bytes = 3;
elseif ($c > 191) $bytes = 2;
else $ret .=$str[$i];
if (($i + $bytes) > $len) $ret .=$str[$i];
$ret2=$str[$i];
while ($bytes > 1) {
$i++;
$b = ord($str[$i]);
if ($b < 128 || $b > 191) {$ret .=$ret2; $ret2=""; $i+=$bytes-1;$bytes=1; break;}
else $ret2.=$str[$i];
$bytes--;
}
}
}
return $ret;
}
private static function __iconv($string, $charset)
{
return iconv ( $charset, "UTF-8" , $string );
}
}
JPA 2.0, Criteria API, Subqueries, In Expressions
Late resurrection.
Your query seems very similar to the one at page 259 of the book Pro JPA 2: Mastering the Java Persistence API, which in JPQL reads:
SELECT e
FROM Employee e
WHERE e IN (SELECT emp
FROM Project p JOIN p.employees emp
WHERE p.name = :project)
Using EclipseLink + H2 database, I couldn't get neither the book's JPQL nor the respective criteria working. For this particular problem I have found that if you reference the id directly instead of letting the persistence provider figure it out everything works as expected:
SELECT e
FROM Employee e
WHERE e.id IN (SELECT emp.id
FROM Project p JOIN p.employees emp
WHERE p.name = :project)
Finally, in order to address your question, here is an equivalent strongly typed criteria query that works:
CriteriaBuilder cb = em.getCriteriaBuilder();
CriteriaQuery<Employee> c = cb.createQuery(Employee.class);
Root<Employee> emp = c.from(Employee.class);
Subquery<Integer> sq = c.subquery(Integer.class);
Root<Project> project = sq.from(Project.class);
Join<Project, Employee> sqEmp = project.join(Project_.employees);
sq.select(sqEmp.get(Employee_.id)).where(
cb.equal(project.get(Project_.name),
cb.parameter(String.class, "project")));
c.select(emp).where(
cb.in(emp.get(Employee_.id)).value(sq));
TypedQuery<Employee> q = em.createQuery(c);
q.setParameter("project", projectName); // projectName is a String
List<Employee> employees = q.getResultList();
Access VBA | How to replace parts of a string with another string
Since the string "North" might be the beginning of a street name, e.g. "Northern Boulevard", street directions are always between the street number and the street name, and separated from street number and street name.
Public Function strReplace(varValue As Variant) as Variant
Select Case varValue
Case "Avenue"
strReplace = "Ave"
Case " North "
strReplace = " N "
Case Else
strReplace = varValue
End Select
End Function
Correct way to pause a Python program
As pointed out by mhawke and steveha's comments, the best answer to this exact question would be:
For a long block of text, it is best to use
input('Press <ENTER> to continue')(orraw_input('Press <ENTER> to continue')on Python 2.x) to prompt the user, rather than a time delay. Fast readers won't want to wait for a delay, slow readers might want more time on the delay, someone might be interrupted while reading it and want a lot more time, etc. Also, if someone uses the program a lot, he/she may become used to how it works and not need to even read the long text. It's just friendlier to let the user control how long the block of text is displayed for reading.
How to change button text or link text in JavaScript?
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";
}
Python: Append item to list N times
For immutable data types:
l = [0] * 100
# [0, 0, 0, 0, 0, ...]
l = ['foo'] * 100
# ['foo', 'foo', 'foo', 'foo', ...]
For values that are stored by reference and you may wish to modify later (like sub-lists, or dicts):
l = [{} for x in range(100)]
(The reason why the first method is only a good idea for constant values, like ints or strings, is because only a shallow copy is does when using the <list>*<number> syntax, and thus if you did something like [{}]*100, you'd end up with 100 references to the same dictionary - so changing one of them would change them all. Since ints and strings are immutable, this isn't a problem for them.)
If you want to add to an existing list, you can use the extend() method of that list (in conjunction with the generation of a list of things to add via the above techniques):
a = [1,2,3]
b = [4,5,6]
a.extend(b)
# a is now [1,2,3,4,5,6]
HTML5 Video // Completely Hide Controls
First of all, remove video's "controls" attribute.
For iOS, we could hide video's buildin play button by adding the following CSS pseudo selector:
video::-webkit-media-controls-start-playback-button {
display: none;
}
How can I use different certificates on specific connections?
We copy the JRE's truststore and add our custom certificates to that truststore, then tell the application to use the custom truststore with a system property. This way we leave the default JRE truststore alone.
The downside is that when you update the JRE you don't get its new truststore automatically merged with your custom one.
You could maybe handle this scenario by having an installer or startup routine that verifies the truststore/jdk and checks for a mismatch or automatically updates the truststore. I don't know what happens if you update the truststore while the application is running.
This solution isn't 100% elegant or foolproof but it's simple, works, and requires no code.
Python 'If not' syntax
Yes, if bar is not None is more explicit, and thus better, assuming it is indeed what you want. That's not always the case, there are subtle differences: if not bar: will execute if bar is any kind of zero or empty container, or False.
Many people do use not bar where they really do mean bar is not None.
Convert int to char in java
int a = 1;
char b = (char) a;
System.out.println(b);
hola, well i went through the same problem but what i did was the following code.
int a = 1
char b = Integer.toString(a).charAt(0);
System.out.println(b);
With this you get the decimal value as a char type. I used charAt() with index 0 because the only value into that String is 'a' and as you know, the position of 'a' into that String start at 0.
Sorry if my english isn't well explained, hope it helps you.
How to uninstall Ruby from /usr/local?
If ruby was installed in the following way:
./configure --prefix=/usr/local
make
sudo make install
You can uninstall it in the following way:
Check installed ruby version; lets assume 2.1.2
wget http://cache.ruby-lang.org/pub/ruby/2.1/ruby-2.1.2.tar.bz2
bunzip ...
tar xfv ...
cd ruby-2.1.2
./configure --prefix=/usr/local
make
sudo checkinstall
# will build deb or rpm package and try to install it
After installation, you can now remove the package and it will remove the directories/files/etc.
sudo rpm -e ruby # or dpkg -P ruby (for Debian-like systems)
There might be some artifacts left:
Removing ruby ...
warning: while removing ruby, directory '/usr/local/lib/ruby/gems/2.1.0/gems' not empty so not removed.
...
Remove them manually.
Up, Down, Left and Right arrow keys do not trigger KeyDown event
The best way to do, I think, is to handle it like the MSDN said on http://msdn.microsoft.com/en-us/library/system.windows.forms.control.previewkeydown.aspx
But handle it, how you really need it. My way (in the example below) is to catch every KeyDown ;-)
/// <summary>
/// onPreviewKeyDown
/// </summary>
/// <param name="e"></param>
protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e)
{
e.IsInputKey = true;
}
/// <summary>
/// onKeyDown
/// </summary>
/// <param name="e"></param>
protected override void OnKeyDown(KeyEventArgs e)
{
Input.SetFlag(e.KeyCode);
e.Handled = true;
}
/// <summary>
/// onKeyUp
/// </summary>
/// <param name="e"></param>
protected override void OnKeyUp(KeyEventArgs e)
{
Input.RemoveFlag(e.KeyCode);
e.Handled = true;
}
Change bootstrap datepicker date format on select
this works for me
Open the file bootstrap-datepicker.js
Go to line 1399 and find format: 'mm/dd/yyyy'.
Now you can change the date format here.
Create a list with initial capacity in Python
From what I understand, Python lists are already quite similar to ArrayLists. But if you want to tweak those parameters I found this post on the Internet that may be interesting (basically, just create your own ScalableList extension):
http://mail.python.org/pipermail/python-list/2000-May/035082.html
How do I download a package from apt-get without installing it?
Try
apt-get -d install <packages>
It is documented in man apt-get.
Just for clarification; the downloaded packages are located in the apt package cache at
/var/cache/apt/archives
'numpy.ndarray' object is not callable error
The error TypeError: 'numpy.ndarray' object is not callable means that you tried to call a numpy array as a function. We can reproduce the error like so in the repl:
In [16]: import numpy as np
In [17]: np.array([1,2,3])()
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/user/<ipython-input-17-1abf8f3c8162> in <module>()
----> 1 np.array([1,2,3])()
TypeError: 'numpy.ndarray' object is not callable
If we are to assume that the error is indeed coming from the snippet of code that you posted (something that you should check,) then you must have reassigned either pd.rolling_mean or pd.rolling_std to a numpy array earlier in your code.
What I mean is something like this:
In [1]: import numpy as np
In [2]: import pandas as pd
In [3]: pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Works
Out[3]: array([ nan, nan, nan])
In [4]: pd.rolling_mean = np.array([1,2,3])
In [5]: pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Doesn't work anymore...
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/user/<ipython-input-5-f528129299b9> in <module>()
----> 1 pd.rolling_mean(np.array([1,2,3]), 20, min_periods=5) # Doesn't work anymore...
TypeError: 'numpy.ndarray' object is not callable
So, basically you need to search the rest of your codebase for pd.rolling_mean = ... and/or pd.rolling_std = ... to see where you may have overwritten them.
Also, if you'd like, you can put in
reload(pd) just before your snippet, which should make it run by restoring the value of pd to what you originally imported it as, but I still highly recommend that you try to find where you may have reassigned the given functions.
How to unsubscribe to a broadcast event in angularJS. How to remove function registered via $on
In case that you need to turn on and off the listener multiple times, you can create a function with boolean parameter
function switchListen(_switch) {
if (_switch) {
$scope.$on("onViewUpdated", this.callMe);
} else {
$rootScope.$$listeners.onViewUpdated = [];
}
}
How to open an existing project in Eclipse?
If you closed the project, you can open it again easily by going to the top bar (alt) > ?Project > Open Project Top menu > Project > Open Project You will get a menu where you can open closed projects that can be preventing you from opening these projects through the File menu. The window that lets you open any closed projects after you go through the menu listed previously
Linux : Search for a Particular word in a List of files under a directory
You could club find with exec as follows to get the list of the files as well as the occurrence of the word/string that you are looking for
find . -exec grep "my word" '{}' \; -print
Padding between ActionBar's home icon and title
this work for me to add padding to the title and for ActionBar icon i have set that programmatically.
getActionBar().setTitle(Html.fromHtml("<font color='#fffff'> Boat App </font>"));
Regular expression for first and last name
The following expression will work on any language supported by UTF-16 and will ensure that there's a minimum of two components to the name (i.e. first + last), but will also allow any number of middle names.
/^(\S+ )+\S+$/u
At the time of this writing it seems none of the other answers meet all of that criteria. Even ^\p{L}{2,}$, which is the closest, falls short because it will also match "invisible" characters, such as U+FEFF (Zero Width No-Break Space).
How do I update a Tomcat webapp without restarting the entire service?
There are multiple easy ways.
Just touch web.xml of any webapp.
touch /usr/share/tomcat/webapps/<WEBAPP-NAME>/WEB-INF/web.xml
You can also update a particular jar file in WEB-INF/lib and then touch web.xml, rather than building whole war file and deploying it again.
Delete webapps/YOUR_WEB_APP directory, Tomcat will start deploying war within 5 seconds (assuming your war file still exists in webapps folder).
Generally overwriting war file with new version gets redeployed by tomcat automatically. If not, you can touch web.xml as explained above.
Copy over an already exploded "directory" to your webapps folder
How to check edittext's text is email address or not?
here email is your email-id.
public boolean validateEmail(String email) {
Pattern pattern;
Matcher matcher;
String EMAIL_PATTERN = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
pattern = Pattern.compile(EMAIL_PATTERN);
matcher = pattern.matcher(email);
return matcher.matches();
}
Add to integers in a list
fooList = [1,3,348,2]
fooList.append(3)
fooList.append(2734)
print(fooList) # [1,3,348,2,3,2734]
iOS - Build fails with CocoaPods cannot find header files
Did you try importing Cocoapods style?
#import <ASLogger.h>
The info on the site is not really clear, I submitted a pull request:
https://github.com/CocoaPods/cocoapods.org/pull/34
Update: They pulled my request :)
"Uncaught TypeError: Illegal invocation" in Chrome
You can also use:
var obj = {
alert: alert.bind(window)
};
obj.alert('I´m an alert!!');
How to properly URL encode a string in PHP?
Here is my use case, which requires an exceptional amount of encoding. Maybe you think it contrived, but we run this on production. Coincidently, this covers every type of encoding, so I'm posting as a tutorial.
Use case description
Somebody just bought a prepaid gift card ("token") on our website. Tokens have corresponding URLs to redeem them. This customer wants to email the URL to someone else. Our web page includes a mailto link that lets them do that.
PHP code
// The order system generates some opaque token
$token = 'w%a&!e#"^2(^@azW';
// Here is a URL to redeem that token
$redeemUrl = 'https://httpbin.org/get?token=' . urlencode($token);
// Actual contents we want for the email
$subject = 'I just bought this for you';
$body = 'Please enter your shipping details here: ' . $redeemUrl;
// A URI for the email as prescribed
$mailToUri = 'mailto:?subject=' . rawurlencode($subject) . '&body=' . rawurlencode($body);
// Print an HTML element with that mailto link
echo '<a href="' . htmlspecialchars($mailToUri) . '">Email your friend</a>';
Note: the above assumes you are outputting to a text/html document. If your output media type is text/json then simply use $retval['url'] = $mailToUri; because output encoding is handled by json_encode().
Test case
- Run the code on a PHP test site (is there a canonical one I should mention here?)
- Click the link
- Send the email
- Get the email
- Click that link
You should see:
"args": {
"token": "w%a&!e#\"^2(^@azW"
},
And of course this is the JSON representation of $token above.
OAuth: how to test with local URLs?
Another valuable option would be https://github.com/ThomasMcDonald/Localhost-uri-Redirector. It's a very simple html page that redirects to whatever host and port you configure in the UI.
The page is hosted on Github https://thomasmcdonald.github.io/Localhost-uri-Redirector, so you can use that as your OAuth2 redirect url and configure you target host and port in the UI and it will just redirect to your app
How do I convert uint to int in C#?
Take note of the checked and unchecked keywords.
It matters if you want the result truncated to the int or an exception raised if the result doesnt fit in signed 32 bits. The default is unchecked.
No Title Bar Android Theme
To Hide the Action Bar add the below code in Values/Styles
<style name="CustomActivityThemeNoActionBar" parent="@android:style/Theme.Holo.Light">
<item name="android:windowActionBar">false</item>
<item name="android:windowNoTitle">true</item>
</style>
Then in your AndroidManifest.xml file add the below code in the required activity
<activity
android:name="com.newbelievers.android.NBMenu"
android:label="@string/title_activity_nbmenu"
android:theme="@style/CustomActivityThemeNoActionBar">
</activity>
Set transparent background using ImageMagick and commandline prompt
Solution
color=$( convert filename.png -format "%[pixel:p{0,0}]" info:- )
convert filename.png -alpha off -bordercolor $color -border 1 \
\( +clone -fuzz 30% -fill none -floodfill +0+0 $color \
-alpha extract -geometry 200% -blur 0x0.5 \
-morphology erode square:1 -geometry 50% \) \
-compose CopyOpacity -composite -shave 1 outputfilename.png
Explanation
This is rather a bit longer than the simple answers previously given, but it gives much better results: (1) The quality is superior due to antialiased alpha, and (2) only the background is removed as opposed to a single color. ("Background" is defined as approximately the same color as the top left pixel, using a floodfill from the picture edges.)
Additionally, the alpha channel is also eroded by half a pixel to avoid halos. Of course, ImageMagick's morphological operations don't (yet?) work at the subpixel level, so you can see I am blowing up the alpha channel to 200% before eroding.
Comparison of results
Here is a comparison of the simple approach ("-fuzz 2% -transparent white") versus my solution, when run on the ImageMagick logo. I've flattened both transparent images onto a saddle brown background to make the differences apparent (click for originals).
Notice how the Wizard's beard has disappeared in the simple approach. Compare the edges of the Wizard to see how antialiased alpha helps the figure blend smoothly into the background.
Of course, I completely admit there are times when you may wish to use the simpler solution. (For example: It's a heck of a lot easier to remember and if you're converting to GIF, you're limited to 1-bit alpha anyhow.)
mktrans shell script
Since it's unlikely you'll want to type this command repeatedly, I recommend wrapping it in a script. You can download a BASH shell script from github which performs my suggested solution. It can be run on multiple files in a directory and includes helpful comments in case you want to tweak things.
bg_removal script
By the way, ImageMagick actually comes with a script called "bg_removal" which uses floodfill in a similar manner as my solution. However, the results are not great because it still uses 1-bit alpha. Also, the bg_removal script runs slower and is a little bit trickier to use (it requires you to specify two different fuzz values). Here's an example of the output from bg_removal.
Python add item to the tuple
Since Python 3.5 (PEP 448) you can do unpacking within a tuple, list set, and dict:
a = ('2',)
b = 'z'
new = (*a, b)
JavaScript Form Submit - Confirm or Cancel Submission Dialog Box
You could use the JS confirm function.
<form onSubmit="if(!confirm('Is the form filled out correctly?')){return false;}">
<input type="submit" />
</form>
How do I set the size of an HTML text box?
Try this code :
input[type="text"]{
padding:10px 0;}
This way it remains independent of what textsize has been set for the textbox. You are increasing the height using padding instead.
Activity has leaked window that was originally added
In my case, the reason was that I forgot to include a permission in the Android manifest file.
How did I find out? Well, just like @Bobby says in a comment beneath the accepted answer, just scroll further up to your logs and you'll see the first reason or event that really threw the Exception. Apparently, the message "Activity has leaked window that was originally added" is only an Exception that resulted from whatever the first Exception is.