I was facing some difficulties with an environment variable that is with custom name (not with container name /port convention for KAPACITOR_BASE_URL and KAPACITOR_ALERTS_ENDPOINT). If we give service name in this case it wouldn't resolve the ip as
KAPACITOR_BASE_URL: http://kapacitor:9092
In above http://[**kapacitor**]:9092
would not resolve to http://172.20.0.2:9092
I resolved the static IPs issues using subnetting configurations.
version: "3.3"
networks:
frontend:
ipam:
config:
- subnet: 172.20.0.0/24
services:
db:
image: postgres:9.4.4
networks:
frontend:
ipv4_address: 172.20.0.5
ports:
- "5432:5432"
volumes:
- postgres_data:/var/lib/postgresql/data
redis:
image: redis:latest
networks:
frontend:
ipv4_address: 172.20.0.6
ports:
- "6379"
influxdb:
image: influxdb:latest
ports:
- "8086:8086"
- "8083:8083"
volumes:
- ../influxdb/influxdb.conf:/etc/influxdb/influxdb.conf
- ../influxdb/inxdb:/var/lib/influxdb
networks:
frontend:
ipv4_address: 172.20.0.4
environment:
INFLUXDB_HTTP_AUTH_ENABLED: "false"
INFLUXDB_ADMIN_ENABLED: "true"
INFLUXDB_USERNAME: "db_username"
INFLUXDB_PASSWORD: "12345678"
INFLUXDB_DB: db_customers
kapacitor:
image: kapacitor:latest
ports:
- "9092:9092"
networks:
frontend:
ipv4_address: 172.20.0.2
depends_on:
- influxdb
volumes:
- ../kapacitor/kapacitor.conf:/etc/kapacitor/kapacitor.conf
- ../kapacitor/kapdb:/var/lib/kapacitor
environment:
KAPACITOR_INFLUXDB_0_URLS_0: http://influxdb:8086
web:
build: .
environment:
RAILS_ENV: $RAILS_ENV
command: bundle exec rails s -b 0.0.0.0
ports:
- "3000:3000"
networks:
frontend:
ipv4_address: 172.20.0.3
links:
- db
- kapacitor
depends_on:
- db
volumes:
- .:/var/app/current
environment:
DATABASE_URL: postgres://postgres@db
DATABASE_USERNAME: postgres
DATABASE_PASSWORD: postgres
INFLUX_URL: http://influxdb:8086
INFLUX_USER: db_username
INFLUX_PWD: 12345678
KAPACITOR_BASE_URL: http://172.20.0.2:9092
KAPACITOR_ALERTS_ENDPOINT: http://172.20.0.3:3000
volumes:
postgres_data:
You can achieve this by deploying something at a higher layer than namespaced Services, like the service loadbalancer https://github.com/kubernetes/contrib/tree/master/service-loadbalancer. If you want to restrict it to a single namespace, use "--namespace=ns" argument (it defaults to all namespaces: https://github.com/kubernetes/contrib/blob/master/service-loadbalancer/service_loadbalancer.go#L715). This works well for L7, but is a little messy for L4.
@T0xicCode's answer is correct, but I thought I would expand on the details since it actually took me about 20 hours to finally get a working solution implemented.
If you're looking to run Nginx in its own container and use it as a reverse proxy to load balance multiple applications on the same server instance then the steps you need to follow are as such:
Link Your Containers
When you docker run
your containers, typically by inputting a shell script into User Data
, you can declare links to any other running containers. This means that you need to start your containers up in order and only the latter containers can link to the former ones. Like so:
#!/bin/bash
sudo docker run -p 3000:3000 --name API mydockerhub/api
sudo docker run -p 3001:3001 --link API:API --name App mydockerhub/app
sudo docker run -p 80:80 -p 443:443 --link API:API --link App:App --name Nginx mydockerhub/nginx
So in this example, the API
container isn't linked to any others, but the
App
container is linked to API
and Nginx
is linked to both API
and App
.
The result of this is changes to the env
vars and the /etc/hosts
files that reside within the API
and App
containers. The results look like so:
/etc/hosts
Running cat /etc/hosts
within your Nginx
container will produce the following:
172.17.0.5 0fd9a40ab5ec
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.17.0.3 App
172.17.0.2 API
ENV Vars
Running env
within your Nginx
container will produce the following:
API_PORT=tcp://172.17.0.2:3000
API_PORT_3000_TCP_PROTO=tcp
API_PORT_3000_TCP_PORT=3000
API_PORT_3000_TCP_ADDR=172.17.0.2
APP_PORT=tcp://172.17.0.3:3001
APP_PORT_3001_TCP_PROTO=tcp
APP_PORT_3001_TCP_PORT=3001
APP_PORT_3001_TCP_ADDR=172.17.0.3
I've truncated many of the actual vars, but the above are the key values you need to proxy traffic to your containers.
To obtain a shell to run the above commands within a running container, use the following:
sudo docker exec -i -t Nginx bash
You can see that you now have both /etc/hosts
file entries and env
vars that contain the local IP address for any of the containers that were linked. So far as I can tell, this is all that happens when you run containers with link options declared. But you can now use this information to configure nginx
within your Nginx
container.
Configuring Nginx
This is where it gets a little tricky, and there's a couple of options. You can choose to configure your sites to point to an entry in the /etc/hosts
file that docker
created, or you can utilize the ENV
vars and run a string replacement (I used sed
) on your nginx.conf
and any other conf files that may be in your /etc/nginx/sites-enabled
folder to insert the IP values.
OPTION A: Configure Nginx Using ENV Vars
This is the option that I went with because I couldn't get the
/etc/hosts
file option to work. I'll be trying Option B soon enough and update this post with any findings.
The key difference between this option and using the /etc/hosts
file option is how you write your Dockerfile
to use a shell script as the CMD
argument, which in turn handles the string replacement to copy the IP values from ENV
to your conf file(s).
Here's the set of configuration files I ended up with:
Dockerfile
FROM ubuntu:14.04
MAINTAINER Your Name <[email protected]>
RUN apt-get update && apt-get install -y nano htop git nginx
ADD nginx.conf /etc/nginx/nginx.conf
ADD api.myapp.conf /etc/nginx/sites-enabled/api.myapp.conf
ADD app.myapp.conf /etc/nginx/sites-enabled/app.myapp.conf
ADD Nginx-Startup.sh /etc/nginx/Nginx-Startup.sh
EXPOSE 80 443
CMD ["/bin/bash","/etc/nginx/Nginx-Startup.sh"]
nginx.conf
daemon off;
user www-data;
pid /var/run/nginx.pid;
worker_processes 1;
events {
worker_connections 1024;
}
http {
# Basic Settings
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 33;
types_hash_max_size 2048;
server_tokens off;
server_names_hash_bucket_size 64;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Logging Settings
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
# Gzip Settings
gzip on;
gzip_vary on;
gzip_proxied any;
gzip_comp_level 3;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/xml text/css application/x-javascript application/json;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
# Virtual Host Configs
include /etc/nginx/sites-enabled/*;
# Error Page Config
#error_page 403 404 500 502 /srv/Splash;
}
NOTE: It's important to include
daemon off;
in yournginx.conf
file to ensure that your container doesn't exit immediately after launching.
api.myapp.conf
upstream api_upstream{
server APP_IP:3000;
}
server {
listen 80;
server_name api.myapp.com;
return 301 https://api.myapp.com/$request_uri;
}
server {
listen 443;
server_name api.myapp.com;
location / {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_cache_bypass $http_upgrade;
proxy_pass http://api_upstream;
}
}
Nginx-Startup.sh
#!/bin/bash
sed -i 's/APP_IP/'"$API_PORT_3000_TCP_ADDR"'/g' /etc/nginx/sites-enabled/api.myapp.com
sed -i 's/APP_IP/'"$APP_PORT_3001_TCP_ADDR"'/g' /etc/nginx/sites-enabled/app.myapp.com
service nginx start
I'll leave it up to you to do your homework about most of the contents of nginx.conf
and api.myapp.conf
.
The magic happens in Nginx-Startup.sh
where we use sed
to do string replacement on the APP_IP
placeholder that we've written into the upstream
block of our api.myapp.conf
and app.myapp.conf
files.
This ask.ubuntu.com question explains it very nicely: Find and replace text within a file using commands
GOTCHA On OSX,
sed
handles options differently, the-i
flag specifically. On Ubuntu, the-i
flag will handle the replacement 'in place'; it will open the file, change the text, and then 'save over' the same file. On OSX, the-i
flag requires the file extension you'd like the resulting file to have. If you're working with a file that has no extension you must input '' as the value for the-i
flag.GOTCHA To use ENV vars within the regex that
sed
uses to find the string you want to replace you need to wrap the var within double-quotes. So the correct, albeit wonky-looking, syntax is as above.
So docker has launched our container and triggered the Nginx-Startup.sh
script to run, which has used sed
to change the value APP_IP
to the corresponding ENV
variable we provided in the sed
command. We now have conf files within our /etc/nginx/sites-enabled
directory that have the IP addresses from the ENV
vars that docker set when starting up the container. Within your api.myapp.conf
file you'll see the upstream
block has changed to this:
upstream api_upstream{
server 172.0.0.2:3000;
}
The IP address you see may be different, but I've noticed that it's usually 172.0.0.x
.
You should now have everything routing appropriately.
GOTCHA You cannot restart/rerun any containers once you've run the initial instance launch. Docker provides each container with a new IP upon launch and does not seem to re-use any that its used before. So
api.myapp.com
will get 172.0.0.2 the first time, but then get 172.0.0.4 the next time. ButNginx
will have already set the first IP into its conf files, or in its/etc/hosts
file, so it won't be able to determine the new IP forapi.myapp.com
. The solution to this is likely to useCoreOS
and itsetcd
service which, in my limited understanding, acts like a sharedENV
for all machines registered into the sameCoreOS
cluster. This is the next toy I'm going to play with setting up.
OPTION B: Use /etc/hosts
File Entries
This should be the quicker, easier way of doing this, but I couldn't get it to work. Ostensibly you just input the value of the /etc/hosts
entry into your api.myapp.conf
and app.myapp.conf
files, but I couldn't get this method to work.
UPDATE: See @Wes Tod's answer for instructions on how to make this method work.
Here's the attempt that I made in api.myapp.conf
:
upstream api_upstream{
server API:3000;
}
Considering that there's an entry in my /etc/hosts
file like so: 172.0.0.2 API
I figured it would just pull in the value, but it doesn't seem to be.
I also had a couple of ancillary issues with my Elastic Load Balancer
sourcing from all AZ's so that may have been the issue when I tried this route. Instead I had to learn how to handle replacing strings in Linux, so that was fun. I'll give this a try in a while and see how it goes.
Just a note of a peculiarity I faced:
Consider:
db server: 192.168.0.101
web server: 192.168.0.102
If you have a user defined in mysql.user as 'user'@'192.168.0.102'
with password1 and another 'user'@'192.168.0.%'
with password2,
then,
if you try to connect to the db server from the web server as 'user' with password2,
it will result in an 'Access denied' error because the single IP 'user'@'192.168.0.102'
authentication is used over the wildcard 'user'@'192.168.0.%'
authentication.
This article helped me...
How to enable remote connections in SQL Server
Everything in SQL Server was configured, my issue was the firewall was blocking port 1433
I tested below code with SQL Server 2008 R2 Express and I believe we should have solution for all 6 steps you outlined. Let's take on them one-by-one:
We can enable TCP/IP protocol with WMI:
set wmiComputer = GetObject( _
"winmgmts:" _
& "\\.\root\Microsoft\SqlServer\ComputerManagement10")
set tcpProtocols = wmiComputer.ExecQuery( _
"select * from ServerNetworkProtocol " _
& "where InstanceName = 'SQLEXPRESS' and ProtocolName = 'Tcp'")
if tcpProtocols.Count = 1 then
' set tcpProtocol = tcpProtocols(0)
' I wish this worked, but unfortunately
' there's no int-indexed Item property in this type
' Doing this instead
for each tcpProtocol in tcpProtocols
dim setEnableResult
setEnableResult = tcpProtocol.SetEnable()
if setEnableResult <> 0 then
Wscript.Echo "Failed!"
end if
next
end if
I believe your solution will work, just make sure you specify the right port. I suggest we pick a different port than 1433 and make it a static port SQL Server Express will be listening on. I will be using 3456 in this post, but please pick a different number in the real implementation (I feel that we will see a lot of applications using 3456 soon :-)
We can use WMI again. Since we are using static port 3456, we just need to update two properties in IPAll section: disable dynamic ports and set the listening port to 3456
:
set wmiComputer = GetObject( _
"winmgmts:" _
& "\\.\root\Microsoft\SqlServer\ComputerManagement10")
set tcpProperties = wmiComputer.ExecQuery( _
"select * from ServerNetworkProtocolProperty " _
& "where InstanceName='SQLEXPRESS' and " _
& "ProtocolName='Tcp' and IPAddressName='IPAll'")
for each tcpProperty in tcpProperties
dim setValueResult, requestedValue
if tcpProperty.PropertyName = "TcpPort" then
requestedValue = "3456"
elseif tcpProperty.PropertyName ="TcpDynamicPorts" then
requestedValue = ""
end if
setValueResult = tcpProperty.SetStringValue(requestedValue)
if setValueResult = 0 then
Wscript.Echo "" & tcpProperty.PropertyName & " set."
else
Wscript.Echo "" & tcpProperty.PropertyName & " failed!"
end if
next
Note that I didn't have to enable any of the individual addresses to make it work, but if it is required in your case, you should be able to extend this script easily to do so.
Just a reminder that when working with WMI, WBEMTest.exe is your best friend!
I wish we could use WMI again, but unfortunately this setting is not exposed through WMI. There are two other options:
Use LoginMode
property of Microsoft.SqlServer.Management.Smo.Server
class, as described here.
Use LoginMode value in SQL Server registry, as described in this post. Note that by default the SQL Server Express instance is named SQLEXPRESS
, so for my SQL Server 2008 R2 Express instance the right registry key was
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQLServer
.
You got this one covered.
Since we are using a static port assigned to our SQL Server Express instance, there's no need to use instance name in the server address anymore.
SQLCMD -U sa -P newPassword -S 192.168.0.120,3456
Please let me know if this works for you (fingers crossed!).
Under linux, I think ping -b 192.168.1.255 will work (192.168.1.255 is the broadcast address for 192.168.1.*) however IIRC that doesn't work under windows.
I think the problem can be because of the NAT. Normally the DNS clients make requests via UDP. But when the DNS server is behind the NAT the UDP requests will not work.
How to Obtain the IP Address of the Local Machine on the Network seems to describe the solution quite well...
Ok to answer this . I simply converted my <
and the >
to <
and >
. What was happening previously is i used to set the text <script>alert('1')</script>
but before setting the text in the input text browserconverts <
and >
as <
and the >
. So hence converting them again to <
and >
since browser will understand that as only tags and converts them , than executing the script inside <input type="text" />
I did the below to simple fetch the domain along with the protocol. Example: https://www.facebook.com/profile/user/ ftp://182.282.34.337/movies/M
use the below Regex pattern : [a-zA-Z0-9]+://.*?/
will get you the output : https://www.facebook.com/ ftp://192.282.34.337/
another one:
if(this.checkValidity() == false) {
$(this).addClass('was-validated');
e.preventDefault();
e.stopPropagation();
e.stopImmediatePropagation();
return false;
}
You can also solve this problem via Apache configuration using mod_remoteip, by adding the following to a conf.d file:
RemoteIPHeader X-Forwarded-For
RemoteIPInternalProxy 172.16.0.0/12
LogFormat "%a %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
I'm not cool enough for comments. I fixed the plunker from the accepted answer to work for rc2. Nothing fancy, links to the CDN were just broken is all.
'@angular/core': {
main: 'bundles/core.umd.js',
defaultExtension: 'js'
},
'@angular/compiler': {
main: 'bundles/compiler.umd.js',
defaultExtension: 'js'
},
'@angular/common': {
main: 'bundles/common.umd.js',
defaultExtension: 'js'
},
'@angular/platform-browser-dynamic': {
main: 'bundles/platform-browser-dynamic.umd.js',
defaultExtension: 'js'
},
'@angular/platform-browser': {
main: 'bundles/platform-browser.umd.js',
defaultExtension: 'js'
},
I came across this while searching for a method and ended up figuring out my own that seems to work easily for what's wanted. I'm new to posting here so I hope this works... But have this in CSS:
span.tab{
padding: 0 80px; /* Or desired space*/
}
Then in your HTML have this be your "long tab" in mid sentence like I needed:
<span class="tab"></span>
Saves from the amount of
or  
that you'd need.
Hope this helps someone, cheers!
If you want to redirect on url instead of activity from your adapter class then pass context of with startactivity.
btnInstall.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse(link));
intent.setData(Uri.parse(link));
context.startActivity(intent);
}
});
Here is the solution which works for me:
I do the relative imports as from ..sub2 import mod2
and then, if I want to run mod1.py
then I go to the parent directory of app
and run the module using the python -m switch as python -m app.sub1.mod1
.
The real reason why this problem occurs with relative imports, is that relative imports works by taking the __name__
property of the module. If the module is being directly run, then __name__
is set to __main__
and it doesn't contain any information about package structure. And, thats why python complains about the relative import in non-package
error.
So, by using the -m switch you provide the package structure information to python, through which it can resolve the relative imports successfully.
I have encountered this problem many times while doing relative imports. And, after reading all the previous answers, I was still not able to figure out how to solve it, in a clean way, without needing to put boilerplate code in all files. (Though some of the comments were really helpful, thanks to @ncoghlan and @XiongChiamiov)
Hope this helps someone who is fighting with relative imports problem, because going through PEP is really not fun.
FORMAT DATE STRTOTIME OR TIME STRING TO DATE FORMAT
$unixtime = 1307595105;
function formatdate($unixtime)
{
return $time = date("m/d/Y h:i:s",$unixtime);
}
You do not exactly define what the dictionaries should look like, but most likely you are referring to QuerySet.values()
. From the official django documentation:
Returns a
ValuesQuerySet
— aQuerySet
subclass that returns dictionaries when used as an iterable, rather than model-instance objects.Each of those dictionaries represents an object, with the keys corresponding to the attribute names of model objects.
In your HTML code
<form [formGroup]="userForm">
<input type="text" class="form-control" [value]="item.UserFirstName" formControlName="UserFirstName">
<input type="text" class="form-control" [value]="item.UserLastName" formControlName="UserLastName">
</form>
In your Typescript code
export class UserprofileComponent implements OnInit {
userForm: FormGroup;
constructor(){
this.userForm = new FormGroup({
UserFirstName: new FormControl(),
UserLastName: new FormControl()
});
}
}
This works perfectly, it does not give any error.
Compiled from above answers, worked for me, did following steps to catch it.
Step #1 - Add following snippet to config file
<configuration>
<runtime>
<legacyCorruptedStateExceptionsPolicy enabled="true" />
</runtime>
</configuration>
Step #2
Add -
[HandleProcessCorruptedStateExceptions]
[SecurityCritical]
on the top of function you are tying catch the exception
source: http://www.gisremotesensing.com/2017/03/catch-exception-attempted-to-read-or.html
By using Axios interceptor:
const service = axios.create({
timeout: 20000 // request timeout
});
// request interceptor
service.interceptors.request.use(
config => {
// Do something before request is sent
config.headers["Authorization"] = "bearer " + getToken();
return config;
},
error => {
Promise.reject(error);
}
);
If you want to override values specified in your application.properties file, you can change your active profile while you run your application and create an application properties file for the profile. So, for example, let's specify the active profile "override" and then, assuming you have created your new application properties file called "application-override.properties" under /tmp, then you can run
java -jar yourApp.jar --spring.profiles.active="override" --spring.config.location="file:/tmp/,classpath:/"
The values especified under spring.config.location are evaluated in reverse order. So, in my example, the classpat is evaluated first, then the file value.
If the jar file and the "application-override.properties" file are in the current directory you can actually simply use
java -jar yourApp.jar --spring.profiles.active="override"
since Spring Boot will find the properties file for you
With this code i solved my problem.For back button paste these two line code.Hope this will help you.
Only paste this code on button click
super.onBackPressed();
Example:-
Button backButton = (Button)this.findViewById(R.id.back);
backButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
super.onBackPressed();
}
});
For the particular case of Windows 10 October 2018 Update or later activedirectory
module is not available unless the optional feature RSAT: Active Directory Domain Services and Lightweight Directory Services Tools
is installed (instructions here + uncollapse install instructions).
Reopen Windows Powershell and import-module activedirectory
will work as expected.
This kind of a setup is simple and elegant :
env.json
{
"development": {
"facebook_app_id": "facebook_dummy_dev_app_id",
"facebook_app_secret": "facebook_dummy_dev_app_secret",
},
"production": {
"facebook_app_id": "facebook_dummy_prod_app_id",
"facebook_app_secret": "facebook_dummy_prod_app_secret",
}
}
common.js
var env = require('env.json');
exports.config = function() {
var node_env = process.env.NODE_ENV || 'development';
return env[node_env];
};
app.js
var common = require('./routes/common')
var config = common.config();
var facebook_app_id = config.facebook_app_id;
// do something with facebook_app_id
To run in production mode :
$ NODE_ENV=production node app.js
This solution is from : http://himanshu.gilani.info/blog/2012/09/26/bootstraping-a-node-dot-js-app-for-dev-slash-prod-environment/, check it out for more detail.
Found how.
First, configure the text of titleLabel
(because of styles, i.e, bold, italic, etc). Then, use setTitleEdgeInsets
considering the width of your image:
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button setTitle:title forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont boldSystemFontOfSize:10.0]];
// Left inset is the negative of image width.
[button setTitleEdgeInsets:UIEdgeInsetsMake(0.0, -image.size.width, -25.0, 0.0)];
After that, use setTitleEdgeInsets
considering the width of text bounds:
[button setImage:image forState:UIControlStateNormal];
// Right inset is the negative of text bounds width.
[button setImageEdgeInsets:UIEdgeInsetsMake(-15.0, 0.0, 0.0, -button.titleLabel.bounds.size.width)];
Now the image and the text will be centered (in this example, the image appears above the text).
Cheers.
@Alex's answer is good, but doesn't work when replacing an element such as an integer with a dictionary, such as update({'foo':0},{'foo':{'bar':1}})
. This update addresses it:
import collections
def update(d, u):
for k, v in u.iteritems():
if isinstance(d, collections.Mapping):
if isinstance(v, collections.Mapping):
r = update(d.get(k, {}), v)
d[k] = r
else:
d[k] = u[k]
else:
d = {k: u[k]}
return d
update({'k1': 1}, {'k1': {'k2': {'k3': 3}}})
Installing both webpack and CLI globally worked for me.
npm i -g webpack webpack-cli
SQL Server 2005 and later allow you to create your own custom aggregate functions, including for things like concatenation- see the sample at the bottom of the linked article.
// --------Start Scroll Bar Slide--------
final HorizontalScrollView xHorizontalScrollViewHeader = (HorizontalScrollView) findViewById(R.id.HorizontalScrollViewHeader);
final HorizontalScrollView xHorizontalScrollViewData = (HorizontalScrollView) findViewById(R.id.HorizontalScrollViewData);
xHorizontalScrollViewData.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
@Override
public void onScrollChanged() {
int scrollX; int scrollY;
scrollX=xHorizontalScrollViewData.getScrollX();
scrollY=xHorizontalScrollViewData.getScrollY();
xHorizontalScrollViewHeader.scrollTo(scrollX, scrollY);
}
});
// ---------End Scroll Bar Slide---------
You can't do it with just CSS, but you can do it with Javascript, and (optionally) jQuery.
If you want to do it without jQuery:
<script>
window.onload = function() {
var anchors = document.getElementsByTagName('a');
for(var i = 0; i < anchors.length; i++) {
var anchor = anchors[i];
anchor.onclick = function() {
alert('ho ho ho');
}
}
}
</script>
And to do it without jQuery, and only on a specific class (ex: hohoho
):
<script>
window.onload = function() {
var anchors = document.getElementsByTagName('a');
for(var i = 0; i < anchors.length; i++) {
var anchor = anchors[i];
if(/\bhohoho\b/).match(anchor.className)) {
anchor.onclick = function() {
alert('ho ho ho');
}
}
}
}
</script>
If you are okay with using jQuery, then you can do this for all anchors:
<script>
$(document).ready(function() {
$('a').click(function() {
alert('ho ho ho');
});
});
</script>
And this jQuery snippet to only apply it to anchors with a specific class:
<script>
$(document).ready(function() {
$('a.hohoho').click(function() {
alert('ho ho ho');
});
});
</script>
i have a data access library which works with both .net core and .net framework.
the trick was in .net core projects to keep the connection strings in a xml file named "app.config" (also for web projects), and mark it as 'copy to output directory',
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<connectionStrings>
<add name="conn1" connectionString="...." providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
ConfigurationManager.ConnectionStrings - will read the connection string.
var conn1 = ConfigurationManager.ConnectionStrings["conn1"].ConnectionString;
1) dp: (density independent pixels)
The number of pixels represented in one unit of dp will increase as the screen resolution increases (when you have more dots/pixels per inch). Conversely on devices with lower resolution, the number of pixels represented in on unit of dp will decrease. Since this is a relative unit, it needs to have a baseline to be compared with. This baseline is a 160 dpi screen. This is the equation: px = dp * (dpi / 160).
2) sp: (scale independent pixels)
This unit scales according to the screen dpi (similar to dp) as well as the user’s font size preference.
3) px: (pixels)
Actual pixels or dots on the screen.
For more details you can visit
Android Developer Guide > Dimension
Android Developer Guide > Screens
Your code works fine, except that the barplot is ordered from low to high. When you want to order the bars from high to low, you will have to add a -
sign before value
:
ggplot(corr.m, aes(x = reorder(miRNA, -value), y = value, fill = variable)) +
geom_bar(stat = "identity")
which gives:
Used data:
corr.m <- structure(list(miRNA = structure(c(5L, 2L, 3L, 6L, 1L, 4L), .Label = c("mmu-miR-139-5p", "mmu-miR-1983", "mmu-miR-301a-3p", "mmu-miR-5097", "mmu-miR-532-3p", "mmu-miR-96-5p"), class = "factor"),
variable = structure(c(1L, 1L, 1L, 1L, 1L, 1L), .Label = "pos", class = "factor"),
value = c(7L, 75L, 70L, 5L, 10L, 47L)),
class = "data.frame", row.names = c("1", "2", "3", "4", "5", "6"))
current($array)
can get you the first element of an array, according to the PHP manual.
Every array has an internal pointer to its "current" element, which is initialized to the first element inserted into the array.
So it works until you have re-positioned the array pointer, and otherwise you'll have to reset the array using reset()
Add it as a reference.
References > Add Reference > Browse for your DLL.
You will then need to add a using statement to the top of your code.
When I run into such problem, I find FUSLOGVW tool very helpful. It is checking assembly binding information and logs it for you. Sometimes the libraries are missing, sometimes GAC has different versions that are being loaded. Sometimes the platform of referenced libraries is causing the problems. This tool makes it clear how the dependencies' bindings are being resolved and this may really help you to investigate/debug your problem.
Fusion Log Viewer / fuslogvw / Assembly Binding Log Viewer. Check more/download here: http://msdn.microsoft.com/en-us/library/e74a18c4.aspx.
Reactstrap also has an implementation of Bootstrap Modals in React. This library targets Bootstrap version 4, whereas react-bootstrap targets version 3.X.
Make sure that you are using SSH instead of http. Check this SO answer.
You have add this code:
$mail->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
And Enabling Allow less secure apps: "will usually solve the problem for PHPMailer, and it does not really make your app significantly less secure. Reportedly, changing this setting may take an hour or more to take effect, so don't expect an immediate fix"
This work for me!
I was also facing this issue but in a little different scenario.
Scenario:
param = 1
def param():
.....
def func():
if param:
var = {passing a dict here}
param(var)
It looks simple and a stupid mistake here, but due to multiple lines of codes in the actual code, it took some time for me to figure out that the variable name I was using was same as my function name because of which I was getting this error.
Changed function name to something else and it worked.
So, basically, according to what I understood, this error means that you are trying to use an integer as a function or in more simple terms, the called function name is also used as an integer somewhere in the code. So, just try to find out all occurrences of the called function name and look if that is being used as an integer somewhere.
I struggled to find this, so, sharing it here so that someone else may save their time, in case if they get into this issue.
Hope this helps!
DevOps is a combination of 3C's - continuous, communication, collaboration and this lead to prime focus in various industries.
In an IoT connected devices world, multiple scrum features like product owner, web, mobile and QA working in an agile manner in a scrum of scrum cycle to deliver a product to end customer.
Continuous integration: Multiple scrum feature working simultanrouly in multiple endpoints
Continuous delivery: With integration and deployment, delivery of product to multiple customers to be handled at the same time.
Continuous deployment: multiple products deployed to multiple customers at multiple platform.
Watch this to know how DevOps enabling IoT connected world: https://youtu.be/nAfZt2t4HqA
Best way would be to declare Boolean
variable within the code block and return
it at end of code, like this:
public boolean Test(){
boolean booleanFlag= true;
if (A>B)
{booleanFlag= true;}
else
{booleanFlag = false;}
return booleanFlag;
}
I find this the best way.
It would help you... assume you have a form with "formname" form and a text box with "txt" name. then you can use following code to allow only aphanumeric values
var checkString = document.formname.txt.value;
if (checkString != "") {
if ( /[^A-Za-z\d]/.test(checkString)) {
alert("Please enter only letter and numeric characters");
document.formname.txt.focus();
return (false);
}
}
Easy task with grep
:
grep -v help filename
Append > newFileName
to redirect output to a new file.
To clarify it, the normal behavior will be printing the lines on screen. To pipe it to a file, the >
can be used. Thus, in this command:
grep -v help filename > newFileName
grep
calls the grep
program, obviously-v
is a flag to inverse the output. By defaulf, grep
prints the lines that match the given pattern. With this flag, it will print the lines that don't match the pattern.help
is the pattern to matchfilename
is the name of the input file>
redirects the output to the following itemnewFileName
the new file where output will be saved.As you may noticed, you will not be deleting things in your file. grep
will read it and another file will be saved, modified accordingly.
There is also the possibility of using blocks:
NSOperationQueue *mainQueue = [NSOperationQueue mainQueue];
[[NSNotificationCenter defaultCenter]
addObserverForName:@"notificationName"
object:nil
queue:mainQueue
usingBlock:^(NSNotification *notification)
{
NSLog(@"Notification received!");
NSDictionary *userInfo = notification.userInfo;
// ...
}];
I use javadoc packaged by Allimant since I was in college.
http://www.allimant.org/javadoc/
The javadoc is in the CHM format (standard windows help format), so it's the best viewed when you're using windows.
Eclipse 3.5 has an option to package required libraries into the runnable jar. File -> Export... Choose runnable jar and click next. The runnable jar export window has a radio button where you can choose to package the required libraries into the jar.
function function_one() {
function_two();
}
function function_two() {
//enter code here
}
You can try:
SELECT id FROM your_table WHERE id = (SELECT MAX(id) FROM your_table)
Where id
is a primary key of the your_table
If you are using OpenLDAP (i.e. slapd) which is common on Linux servers, then you must enable the memberof overlay to be able to match against a filter using the (memberOf=XXX) attribute.
Also, once you enable the overlay, it does not update the memberOf attributes for existing groups (you will need to delete out the existing groups and add them back in again). If you enabled the overlay to start with, when the database was empty then you should be OK.
Different case with same error (backing up to external drive), the issue was that I'd set up the remote repo with clone. Works every time if you set the remote repo up with bare initially
cd F:/backups/dir
git init --bare
cd C:/working/dir
git remote add backup F:/backups/dir
git push backup master
You can do it like this
$(function(){_x000D_
$("tr").find("td:eq(0)").css("color","red");_x000D_
})
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<table>_x000D_
<tr>_x000D_
<td>col_1</td>_x000D_
<td>col_2</td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td>col_1</td>_x000D_
<td>col_2</td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td>col_1</td>_x000D_
<td>col_2</td>_x000D_
</tr>_x000D_
<tr>_x000D_
<td>col_1</td>_x000D_
<td>col_2</td>_x000D_
</tr>_x000D_
</table>
_x000D_
It is also possible, that the referenced projects targets .NET 4.0, while the Console App Project targets .NET 4.0 Client Library.
While it might not have been related to this particular case, I think someone else can find this information useful.
Here is an alternate syntax I use:
INSERT INTO tab_student
SET name_student = 'Bobby Tables',
id_teacher_fk = (
SELECT id_teacher
FROM tab_teacher
WHERE name_teacher = 'Dr. Smith')
I'm doing this in Excel to import a pivot table to a dimension table and a fact table in SQL so you can import to both department
and expenses
tables from the following:
Luckily, MySQL supports LAST_INSERT_ID()
exactly for this purpose.
INSERT INTO tab_teacher
SET name_teacher = 'Dr. Smith';
INSERT INTO tab_student
SET name_student = 'Bobby Tables',
id_teacher_fk = LAST_INSERT_ID()
this was available in php 5.6 in php 7+ you should declare the array first
$users = array(); // not $users = ";
$users[] = "762";
This might give you a good insight
ConcurrentHashMap achieves higher concurrency by slightly relaxing the promises it makes to callers. A retrieval operation will return the value inserted by the most recent completed insert operation, and may also return a value added by an insertion operation that is concurrently in progress (but in no case will it return a nonsense result). Iterators returned by ConcurrentHashMap.iterator() will return each element once at most and will not ever throw ConcurrentModificationException, but may or may not reflect insertions or removals that occurred since the iterator was constructed. No table-wide locking is needed (or even possible) to provide thread-safety when iterating the collection. ConcurrentHashMap may be used as a replacement for synchronizedMap or Hashtable in any application that does not rely on the ability to lock the entire table to prevent updates.
Regarding this:
However, iterators are designed to be used by only one thread at a time.
It means, while using iterators produced by ConcurrentHashMap in two threads are safe, it may cause an unexpected result in the application.
I was asking the same too. Another solution is you could overload your method:
void remove_id(EmployeeClass);
void remove_id(ProductClass);
void remove_id(DepartmentClass);
in the call the argument will fit accordingly the object you pass. but then you will have to repeat yourself
void remove_id(EmployeeClass _obj) {
int saveId = _obj->id;
...
};
void remove_id(ProductClass _obj) {
int saveId = _obj->id;
...
};
void remove_id(DepartmentClass _obj) {
int saveId = _obj->id;
...
};
Yes its late - but may help someone on reference
xml with EditText, Button and TextView
onClick on Button will update the value from EditText to TextView
<EditText
android:id="@+id/et_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<Button
android:id="@+id/btn_submit_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/txt_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
Look at the code do the action in your class
Don't need to initialize the id's of components like in Java. You can do it by their xml Id's
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_sample)
btn_submit_id.setOnClickListener {
txt_id.setText(et_id.text);
}
}
also you can set value in TextView like,
textview.text = "your value"
Since Docker 1.5 you can now expose a range of ports to other linked containers using:
The Dockerfile EXPOSE command:
EXPOSE 7000-8000
or The Docker run command:
docker run --expose=7000-8000
Or instead you can publish a range of ports to the host machine via Docker run command:
docker run -p 7000-8000:7000-8000
sudo apt-get -y install python-software-properties && \
sudo apt-get -y install software-properties-common && \
sudo apt-get -y install gcc make build-essential libssl-dev libffi-dev python-dev
You need the libssl-dev and libffi-dev if especially you are trying to install python's cryptography libraries or python libs that depend on it(eg ansible)
I think that it is better (for my expirience) to use: :first-of-type
, :nth-of-type()
, :last-of-type
. It can be done whit a little changing of rules, but I was able to do much more than whit *-of-type
, than *-child
selectors.
<?php
$val = $myService->getValue(); // Makes an API and database call
echo "
<script>
myPlugin.start({$val});
</script> ";
?>
For me, restarting Docker Desktop did not help. Shutting down Win10 and start it again, it did help.
Just encountered the same issue. The problem is because of django-registration
incompatible with django 1.7 user model.
A simple fix is to change these lines of code, at your installed django-registration
module::
try:
from django.contrib.auth import get_user_model
User = get_user_model()
except ImportError:
from django.contrib.auth.models import User
to::
from django.conf import settings
try:
from django.contrib.auth import get_user_model
User = settings.AUTH_USER_MODEL
except ImportError:
from django.contrib.auth.models import User
Mine is at .venv/local/lib/python2.7/site-packages/registration/models.py
(virtualenv)
You can use inWaiting()
to get the amount of bytes available at the input queue.
Then you can use read()
to read the bytes, something like that:
While True:
bytesToRead = ser.inWaiting()
ser.read(bytesToRead)
Why not to use readline()
at this case from Docs:
Read a line which is terminated with end-of-line (eol) character (\n by default) or until timeout.
You are waiting for the timeout at each reading since it waits for eol. the serial input Q remains the same it just a lot of time to get to the "end" of the buffer, To understand it better: you are writing to the input Q like a race car, and reading like an old car :)
Like this:
function createJSON() {
jsonObj = [];
$("input[class=email]").each(function() {
var id = $(this).attr("title");
var email = $(this).val();
item = {}
item ["title"] = id;
item ["email"] = email;
jsonObj.push(item);
});
console.log(jsonObj);
}
Explanation
You are looking for an array of objects
. So, you create a blank array. Create an object for each input
by using 'title' and 'email' as keys. Then you add each of the objects to the array.
If you need a string, then do
jsonString = JSON.stringify(jsonObj);
Sample Output
[{"title":"QA","email":"a@b"},{"title":"PROD","email":"b@c"},{"title":"DEV","email":"c@d"}]
You can use the following commands:
whoami /priv
whoami /all
For more information, check whoami @ technet.
Right click on your MVC Project. Go to Properties. Go to the Web tab.
Change the port number in the Project Url. Example. localhost:50645
Changing the bold number, 50645, to anything else will change the port the site runs under.
Press the Create Virtual Directory button to complete the process.
See also: http://msdn.microsoft.com/en-us/library/ms178109.ASPX
Image shows the web tab of an MVC Project
I had a similar problem and I realized that by default mongo only supports one schema per collection. Either store your new schema in a different collection or delete the existing documents with the incompatible schema within the your current collection. Or find a way to have more than one schema per collection.
Try this ,
background: url(../IMAGES/background.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
For more information , follow this Perfect Full Page Background Image !!
Process is to clean up and then reinstall with the following commands:
rm -rf /usr/local/Cellar /usr/local/.git && brew cleanup
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install )"
Notes:
curl | bash (or ruby)
commands before running themIn node, you can just say
console.log(aa)
and it will format it as it should.
If you need to use the resulting string you should use
JSON.stringify(aa)
I wrote this script some time ago:
Usage:
var myCounter = new Countdown({
seconds:5, // number of seconds to count down
onUpdateStatus: function(sec){console.log(sec);}, // callback for each second
onCounterEnd: function(){ alert('counter ended!');} // final action
});
myCounter.start();
function Countdown(options) {
var timer,
instance = this,
seconds = options.seconds || 10,
updateStatus = options.onUpdateStatus || function () {},
counterEnd = options.onCounterEnd || function () {};
function decrementCounter() {
updateStatus(seconds);
if (seconds === 0) {
counterEnd();
instance.stop();
}
seconds--;
}
this.start = function () {
clearInterval(timer);
timer = 0;
seconds = options.seconds;
timer = setInterval(decrementCounter, 1000);
};
this.stop = function () {
clearInterval(timer);
};
}
If you're able to connect to the database using mysql, but you get an error for mysqldump, then the problem may be that you lack privileges to lock the table.
Try the --single-transaction option in that case.
mysqldump -h database.example.com -u mydbuser -p mydatabase --single-transaction > /home/mylinuxuser/mydatabase.sql
The link posted by Jose has been updated and pylab now has a tight_layout()
function that does this automatically (in matplotlib version 1.1.0).
http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.tight_layout
http://matplotlib.org/users/tight_layout_guide.html#plotting-guide-tight-layout
Another way of simply telling if an element exists is to check the count()
if (myset.count(x)) {
// x is in the set, count is 1
} else {
// count zero, i.e. x not in the set
}
Most of the times, however, I find myself needing access to the element wherever I check for its existence.
So I'd have to find the iterator anyway. Then, of course, it's better to simply compare it to end
too.
set< X >::iterator it = myset.find(x);
if (it != myset.end()) {
// do something with *it
}
C++ 20
In C++20 set gets a contains
function, so the following becomes possible as mentioned at: https://stackoverflow.com/a/54197839/895245
if (myset.contains(x)) {
// x is in the set
} else {
// no x
}
Do this:
"android:style/Theme.Holo.Light.DarkActionBar"
You missed the android
keyword before style. This denotes that it is an inbuilt style for Android.
Following Felix Klings advice I tried it out in my chrome browser.
console.dir([1,2])
gives the following output:
Array[2]
0: 1
1: 2
length: 2
__proto__: Array[0]
While console.log([1,2])
gives the following output:
[1, 2]
So I believe console.dir()
should be used to get more information like prototype etc in arrays and objects.
<input type="button">
can be used anywhere, not just within form and they do not submit form if they are in one. Much better suited with Javascript
.
<input type="submit">
should be used in forms only and they will send a request (either GET or POST) to specified URL. They should not be put in any HTML place.
You forgot your class declaration:
public class MyClass {
...
I need more information really but it will be along the lines of..
SELECT table1.*, table2.col1, table2.col3 FROM table1 JOIN table2 USING(id)
Unlike div
, p
1 which are Block Level elements which can take up margin
on all sides,span
2 cannot as it's an Inline element which takes up margins horizontally only.
From the specification:
Margin properties specify the width of the margin area of a box. The 'margin' shorthand property sets the margin for all four sides while the other margin properties only set their respective side. These properties apply to all elements, but vertical margins will not have any effect on non-replaced inline elements.
Demo 1 (Vertical margin
not applied as span
is an inline
element)
Solution? Make your span
element, display: inline-block;
or display: block;
.
Would suggest you to use display: inline-block;
as it will be inline
as well as block
. Making it block
only will result in your element to render on another line, as block
level elements take 100%
of horizontal space on the page, unless they are made inline-block
or they are floated
to left
or right
.
1. Block Level Elements - MDN Source
2. Inline Elements - MDN Resource
Cygwin includes grep. All the GNU tools amd Unix stuff works great on Windows if you install Cygwin.
If you want a flat list of all paths under a given dir (like find .
in the shell):
files = [
os.path.join(parent, name)
for (parent, subdirs, files) in os.walk(YOUR_DIRECTORY)
for name in files + subdirs
]
To only include full paths to files under the base dir, leave out + subdirs
.
A lot of introductory University courses seem to teach this style, for two reasons (in my experience):
It doesn’t require understanding of classes or methods. Usually, this is taught way before the word “class” is ever mentioned – nor even method calls. So using something like String.valueOf(…)
would confuse students.
It is an illustration of “operator overloading” – in fact, this was sold to us as the idiomatic overloaded operator (small wonder here, since Java doesn’t allow custom operator overloading).
So it may either be born out of didactic necessity (although I’d argue that this is just bad teaching) or be used to illustrate a principle that’s otherwise quite hard to demonstrate in Java.
The TensorFlow package couldn't be found by the latest version of the "pip".
To be honest, I really don't know why this is...
but, the quick fix that worked out for me was:
[In case you are using a virtual environment]
downgrade the virtual environment to python-3.8.x and pip-20.2.x
In case of anaconda, try:
conda install python=3.8
This should install the latest version of python-3.8 and pip-20.2.x for you.
And then, try
pip install tensorflow
Again, this worked fine for me, not sure if it'll work the same for you.
The easiest way is, first change the variable to a String and accept the input as a string. Then you can control based on the input variable with an if-else or switch statement as follows.
Scanner reader = new Scanner(System.in);
String c = reader.nextLine();
switch (c) {
case "a":
<your code here>
break;
case "b":
<your code here>
break;
default:
<your code here>
}
Use json_decode to transform your JSON into a PHP array. Example:
$json = '{"a":"b"}';
$array = json_decode($json, true);
echo $array['a']; // b
Just git commit
it.
Optionally git abort
it:
I ran into a merge conflict. How can I abort the merge?
To make life easier with on merges install kdiff3 and configure it as a mergetool. Instructions: http://doodkin.com/2016/05/29/git-merge-easy-github-this-branch-has-conflicts-that-must-be-resolved-use-the-command-line/
That page contains this video: https://www.youtube.com/watch?v=Cc4xPp7Iuzo
In WebApi 2 you can add this to global.asax
protected void Application_PostAuthorizeRequest()
{
System.Web.HttpContext.Current.SetSessionStateBehavior(System.Web.SessionState.SessionStateBehavior.Required);
}
Then you could access the session through:
HttpContext.Current.Session
As an ArrayList
that line would be
import java.util.ArrayList;
...
ArrayList<Card> hand = new ArrayList<Card>();
To use the ArrayList
you have do
hand.get(i); //gets the element at position i
hand.add(obj); //adds the obj to the end of the list
hand.remove(i); //removes the element at position i
hand.add(i, obj); //adds the obj at the specified index
hand.set(i, obj); //overwrites the object at i with the new obj
Also read this http://docs.oracle.com/javase/6/docs/api/java/util/ArrayList.html
Have you tried mode 'a+'?
with open(filename, 'a+') as f:
f.write(...)
Note however that f.tell()
will return 0 in Python 2.x. See https://bugs.python.org/issue22651 for details.
I use two classes. First one the cache core object:
public class Cacher<TValue>
where TValue : class
{
#region Properties
private Func<TValue> _init;
public string Key { get; private set; }
public TValue Value
{
get
{
var item = HttpRuntime.Cache.Get(Key) as TValue;
if (item == null)
{
item = _init();
HttpContext.Current.Cache.Insert(Key, item);
}
return item;
}
}
#endregion
#region Constructor
public Cacher(string key, Func<TValue> init)
{
Key = key;
_init = init;
}
#endregion
#region Methods
public void Refresh()
{
HttpRuntime.Cache.Remove(Key);
}
#endregion
}
Second one is list of cache objects:
public static class Caches
{
static Caches()
{
Languages = new Cacher<IEnumerable<Language>>("Languages", () =>
{
using (var context = new WordsContext())
{
return context.Languages.ToList();
}
});
}
public static Cacher<IEnumerable<Language>> Languages { get; private set; }
}
while(scanf("%d %d",a,b)!=EOF)
{
//do .....
}
NoClassDefFound error is a nebulous error and is often hiding a more serious issue. It is not the same as ClassNotFoundException (which is thrown when the class is just plain not there).
NoClassDefFound may indicate the class is not there, as the javadocs indicate, but it is typically thrown when, after the classloader has loaded the bytes for the class and calls "defineClass" on them. Also carefully check your full stack trace for other clues or possible "cause" Exceptions (though your particular backtrace shows none).
The first place to look when you get a NoClassDefFoundError is in the static bits of your class i.e. any initialization that takes place during the defining of the class. If this fails it will throw a NoClassDefFoundError - it's supposed to throw an ExceptionInInitializerError and indicate the details of the problem but in my experience, these are rare. It will only do the ExceptionInInitializerError the first time it tries to define the class, after that it will just throw NoClassDefFound. So look at earlier logs.
I would thus suggest looking at the code in that HibernateTransactionInterceptor line and seeing what it is requiring. It seems that it is unable to define the class SpringFactory. So maybe check the initialization code in that class, that might help. If you can debug it, stop it at the last line above (17) and debug into so you can try find the exact line that is causing the exception. Also check higher up in the log, if you very lucky there might be an ExceptionInInitializerError.
Try it, This will work more efficiently.. 1. For number ranging 00 - 99.99 (decimal inclusive)
^([0-9]{1,2}){1}(\.[0-9]{1,2})?$
Working fiddle link
https://regex101.com/r/d1Kdw5/1/
2.For number ranging 1-100(inclusive) with no preceding 0.
(?:\b|-)([1-9]{1,2}[0]?|100)\b
Working Fiddle link
If you don't care about checking the validity of the certificate just add the --no-check-certificate
option on the wget command-line. This worked well for me.
NOTE: This opens you up to man-in-the-middle (MitM) attacks, and is not recommended for anything where you care about security.
This error also occurs when you try to use the result of getwd() directly in the path. The problem is the missingness of the "/" at the end. Try the following code:
projectFolder <- paste(getwd(), "/", sep = '')
The paste() is to concatenate the forward slash at the end.
They are use together to create a new child process. First, calling fork
creates a copy of the current process (the child process). Then, exec
is called from within the child process to "replace" the copy of the parent process with the new process.
The process goes something like this:
child = fork(); //Fork returns a PID for the parent process, or 0 for the child, or -1 for Fail
if (child < 0) {
std::cout << "Failed to fork GUI process...Exiting" << std::endl;
exit (-1);
} else if (child == 0) { // This is the Child Process
// Call one of the "exec" functions to create the child process
execvp (argv[0], const_cast<char**>(argv));
} else { // This is the Parent Process
//Continue executing parent process
}
You cannot update UI from any other thread other than the UI thread. Use this to update thread on the UI thread.
private void AggiornaContatore()
{
if(this.lblCounter.InvokeRequired)
{
this.lblCounter.BeginInvoke((MethodInvoker) delegate() {this.lblCounter.Text = this.index.ToString(); ;});
}
else
{
this.lblCounter.Text = this.index.ToString(); ;
}
}
Please go through this chapter and more from this book to get a clear picture about threading:
http://www.albahari.com/threading/part2.aspx#_Rich_Client_Applications
As mentioned a couple times before: To switch from LinearLayout to RelativeLayout works, but you can also solve the problem instead of avoiding it. Use the tools a LinearLayout provides: Give the TextView a weight=1 (see code below), the weight for your button should remain 0 or none. In this case the TextView will take all the remaining space, which is not used to display the content of your TextView or ButtonView and pushes your button to the right.
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="35dp">
<TextView
android:id="@+id/lblExpenseCancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/cancel"
android:textColor="#404040"
android:layout_marginLeft="10dp"
android:textSize="20sp"
android:layout_marginTop="9dp"
**android:layout_weight="1"**
/>
<Button
android:id="@+id/btnAddExpense"
android:layout_width="wrap_content"
android:layout_height="45dp"
android:background="@drawable/stitch_button"
android:layout_marginLeft="10dp"
android:text="@string/add"
android:layout_gravity="right"
android:layout_marginRight="15dp" />
</LinearLayout>
Add following command in Dockerfile:
RUN apt-get update
You don't need to change hosts file or any Virtual Box configuration. Keep settings in NAT. Go to your Windows instance and run "cmd" or open cmd.exe. Execute command "ipconfig" and get the Default Gateway IP Address. Browse http://10.0.2.2:8080 on Windows IE you will see is the same than your Mac Safari http://localhost:8080/ or http://127.0.0.1:8080
Python 3 only answer (that doesn't use slicing or throw away the rest of the list
, but might be good enough anyway) is use unpacking generalizations to get first
and last
separate from the middle:
first, *_, last = some_list
The choice of _
as the catchall for the "rest" of the arguments is arbitrary; they'll be stored in the name _
which is often used as a stand-in for "stuff I don't care about".
Unlike many other solutions, this one will ensure there are at least two elements in the sequence; if there is only one (so first
and last
would be identical), it will raise an exception (ValueError
).
Looks like you have the view white space option enabled. Go to Edit -> Advanced -> and uncheck "View Whitespace"
Instead of the conventional read.table I feel fread is a faster function. Specifying additional attributes like select only the required columns, specifying colclasses and string as factors will reduce the time take to import the file.
data_frame <- fread("filename.csv",sep=",",header=FALSE,stringsAsFactors=FALSE,select=c(1,4,5,6,7),colClasses=c("as.numeric","as.character","as.numeric","as.Date","as.Factor"))
// const path = 'info.value[0].item'
// const obj = { info: { value: [ { item: 'it works!' } ], randominfo: 3 } }
// getValue(path, obj)
export const getValue = ( path , obj) => {
const newPath = path.replace(/\]/g, "")
const arrayPath = newPath.split(/[\[\.]+/) || newPath;
const final = arrayPath.reduce( (obj, k) => obj ? obj[k] : obj, obj)
return final;
}
I had the need to read a URL GET variable and complete an action based on the url parameter. I searched high and low for a solution and came across this little piece of code. It basically reads the current page url, perform some regular expression on the URL then saves the url parameters in an associative array, which we can easily access.
So as an example if we had the following url with the javascript at the bottom in place.
http://TestServer/Pages/NewsArchive.aspx?year=2013&Month=July
All we’d need to do to get the parameters id and page are to call this:
The Code will be:
<script type="text/javascript">
var first = getUrlVars()["year"];
var second = getUrlVars()["Month"];
alert(first);
alert(second);
function getUrlVars() {
var vars = {};
var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
vars[key] = value;
});
return vars;
}
</script>
try it:
EXEC [ServerName].[DatabaseName].dbo.sp_columns 'TableName'
and you can get some table structure information, such as:
TABLE_QUALIFIER, TABLE_OWNER, TABLE_NAME, COLUMN_NAME, DATA_TYPE, TYPE_NAME...
Use the -u
flag to include a username, and curl will prompt for a password:
curl -u username http://example.com
You can also include the password in the command, but then your password will be visible in bash history:
curl -u username:password http://example.com
I have found a way to use JSONP
method in $http
directly and with support of params
in the config object:
params = {
'a': b,
'callback': 'JSON_CALLBACK'
};
$http({
url: url,
method: 'JSONP',
params: params
})
Yes, JavaScript variables will exist in the scope they are created.
var bannerID = 55;
<input id="EditBanner" type="button"
value="Edit Image" onclick="EditBanner(bannerID);"/>
function EditBanner(id) {
//Do something with id
}
If you use event handlers and jQuery it is simple also
$("#EditBanner").click(function() {
EditBanner(bannerID);
});
Do you even need MSDTC? The escalation you're experiencing is often caused by creating multiple connections within a single TransactionScope.
If you do need it then you need to enable it as outlined in the error message. On XP:
You can create the Python dictionary and serialize it to JSON in one line and it's not even ugly.
my_json_string = json.dumps({'key1': val1, 'key2': val2})
The answer I was looking for is at https://unix.stackexchange.com/a/9557/114862.
Using the
-c
flag when the local file is of greater or equal size to the server version will avoid re-downloading.
You can't break from a Groovy each loop, but you can break from a java "enhanced" for loop.
def a = [1, 2, 3, 4, 5, 6, 7]
for (def i : a) {
if (i < 2)
continue
if (i > 5)
break
println i
}
Output:
2
3
4
5
This might not fit for absolutely every situation but it's helped for me :)
If you're certain that only Javascript will be consuming the JSON, I prefer to pass Javascript Date
objects directly.
The ctime()
method on datetime
objects will return a string that the Javascript Date object can understand.
import datetime
date = datetime.datetime.today()
json = '{"mydate":new Date("%s")}' % date.ctime()
Javascript will happily use that as an object literal, and you've got your Date object built right in.
From android 6.0 you need to check for user permission, if you want to use GoogleMap.setMyLocationEnabled(true)
you will get Call requires permission which may be rejected by user
error
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
mMap.setMyLocationEnabled(true);
} else {
// Show rationale and request permission.
}
if you want to read more, check google map docs
It's really a matter of opinion. In your example, System.out.println(5)
would be slightly more efficient, as you only refer to the number once and never change it. As was said in a comment, int
is a primitive type and not a reference - thus it doesn't take up much space. However, you might want to set actual reference variables to null only if they are used in a very complicated method. All local reference variables are garbage collected when the method they are declared in returns.
Just pass it in like any other parameter:
def a(x):
return "a(%s)" % (x,)
def b(f,x):
return f(x)
print b(a,10)
“tools:context” is one of the Design Attributes that can facilitate layout creation in XML in the development framework. This attribute is used to show the development framework what activity class is picked for implementing the layout. Using “tools:context”, Android Studio chooses the necessary theme for the preview automatically.
If you’d like to know more about some other attributes and useful tools for Android app development, take a look at this review: http://cases.azoft.com/4-must-know-tools-for-effective-android-development/
The answer is depends how you are using the objects of javascript. As already pointed loading the javascript files at footer rather than header certainly improves the performance but care should be taken that the objects which are used are initialized later than they are loaded at footer. One more way is load the 'js' files placed in folder which will be available to all the files.
Hide keyboard when user clicks search. Addition to Robby Pond answer
private void performSearch() {
editText.clearFocus();
InputMethodManager in = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
in.hideSoftInputFromWindow(editText.getWindowToken(), 0);
//...perform search
}
From ioS 7 onwards, there are newer ways for apps to run in background. Apple now recognizes that apps have to constantly download and process data constantly.
- Apps that play audible content to the user while in the background, such as a music player app
- Apps that record audio content while in the background.
- Apps that keep users informed of their location at all times, such as a navigation app
- Apps that support Voice over Internet Protocol (VoIP)
- Apps that need to download and process new content regularly
- Apps that receive regular updates from external accessories
You can declare app's supported background tasks in Info.plist using X Code 5+. For eg. adding UIBackgroundModes key to your app’s Info.plist file and adding a value of 'fetch' to the array allows your app to regularly download and processes small amounts of content from the network. You can do the same in the 'capabilities' tab of Application properties in XCode 5 (attaching a snapshot)
You can find more about this in Apple documentation
Create xml file like edit_text_design.xml and save it to your drawable folder
i have given the Color codes According to my Choice, Please Change Color Codes As per your Choice !
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape>
<solid android:color="#c2c2c2" />
</shape>
</item>
<!-- main color -->
<item
android:bottom="1.5dp"
android:left="1.5dp"
android:right="1.5dp">
<shape>
<solid android:color="#000" />
</shape>
</item>
<!-- draw another block to cut-off the left and right bars -->
<item android:bottom="5.0dp">
<shape>
<solid android:color="#000" />
</shape>
</item>
</layer-list>
your Edit Text Should contain it as Background :
add android:background="@drawable/edit_text_design" to all of your EditText's
and your above EditText should now look like this:
<EditText
android:id="@+id/name_edit_text"
android:background="@drawable/edit_text_design"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/profile_image_view_layout"
android:layout_centerHorizontal="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="20dp"
android:ems="15"
android:hint="@string/name_field"
android:inputType="text" />
$('div#imageContainer').click(function () {
$('div#imageContainerimg').attr('src', 'YOUR NEW IMAGE URL HERE');
});
This should work
return RedirectToAction("actionName", "controllerName", null);
Guid? myGuidVar = (Guid?)null;
It could be. Unnecessary casting not required.
Guid? myGuidVar = null;
Try to pass value a and compare using the equals method like this:
public static void main(String str[]) {
boolean b = str[0].equals("a");
System.out.println(b);
}
Follow this link to know more about Command line argument in Java
@: one-way binding
=: two-way binding
&: function binding
One mistake I was making was saving the file as a.condarc
or b.condarc
.
Save it only as .condarc
and paste the following code in the file and save the file in your home directory. Make necessary changes to hostname, user etc.
channels:
- defaults
show_channel_urls: True
allow_other_channels: True
proxy_servers:
http: http://user:pass@hostname:port
https: http://user:pass@hostname:port
ssl_verify: False
You can try this it will help for you.You can't get path from WhatsApp directly.If you need an file path first copy file and send new file path. Using the code below
public static String getFilePathFromURI(Context context, Uri contentUri) {
String fileName = getFileName(contentUri);
if (!TextUtils.isEmpty(fileName)) {
File copyFile = new File(TEMP_DIR_PATH + fileName+".jpg");
copy(context, contentUri, copyFile);
return copyFile.getAbsolutePath();
}
return null;
}
public static String getFileName(Uri uri) {
if (uri == null) return null;
String fileName = null;
String path = uri.getPath();
int cut = path.lastIndexOf('/');
if (cut != -1) {
fileName = path.substring(cut + 1);
}
return fileName;
}
public static void copy(Context context, Uri srcUri, File dstFile) {
try {
InputStream inputStream = context.getContentResolver().openInputStream(srcUri);
if (inputStream == null) return;
OutputStream outputStream = new FileOutputStream(dstFile);
IOUtils.copy(inputStream, outputStream);
inputStream.close();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
Then IOUtils class is like below
public class IOUtils {
private static final int BUFFER_SIZE = 1024 * 2;
private IOUtils() {
// Utility class.
}
public static int copy(InputStream input, OutputStream output) throws Exception, IOException {
byte[] buffer = new byte[BUFFER_SIZE];
BufferedInputStream in = new BufferedInputStream(input, BUFFER_SIZE);
BufferedOutputStream out = new BufferedOutputStream(output, BUFFER_SIZE);
int count = 0, n = 0;
try {
while ((n = in.read(buffer, 0, BUFFER_SIZE)) != -1) {
out.write(buffer, 0, n);
count += n;
}
out.flush();
} finally {
try {
out.close();
} catch (IOException e) {
Log.e(e.getMessage(), e.toString());
}
try {
in.close();
} catch (IOException e) {
Log.e(e.getMessage(), e.toString());
}
}
return count;
}
}
The pack
method sizes the frame so that all its contents are at or above their preferred sizes. An alternative to pack is to establish a frame size explicitly by calling setSize
or setBounds
(which also sets the frame location). In general, using pack is preferable to calling setSize
, since pack leaves the frame layout manager in charge of the frame size, and layout managers are good at adjusting to platform dependencies and other factors that affect component size.
From Java tutorial
You should also refer to Javadocs any time you need additional information on any Java API
.add_to_cart >>> .form-item:eq(1)
the second .form-item at tree level child from the .add_to_cart
1: No difference. It is kept around to allow old S-code to continue to function. This is documented a "Note" in ?Math
2: Yes: But you already know it:
`^`(x,y)
#[1] 1024
In R the mathematical operators are really functions that the parser takes care of rearranging arguments and function names for you to simulate ordinary mathematical infix notation. Also documented at ?Math
.
Edit: Let me add that knowing how R handles infix operators (i.e. two argument functions) is very important in understanding the use of the foundational infix "[[" and "["-functions as (functional) second arguments to lapply
and sapply
:
> sapply( list( list(1,2,3), list(4,3,6) ), "[[", 1)
[1] 1 4
> firsts <- function(lis) sapply(lis, "[[", 1)
> firsts( list( list(1,2,3), list(4,3,6) ) )
[1] 1 4
Am using Mountain Lion. What I did was Look for /usr/local and Get Info. On it there is Sharing and Permissions. Make sure that its only the user and Admin are the only ones who have read and write permissions. Anyone else should have read access only. That sorted my problem.
Its normally helpful is your Run disk utilities and repair permissions too.
Map<String, String> x;
Map<String, Integer> y =
x.entrySet().stream()
.collect(Collectors.toMap(
e -> e.getKey(),
e -> Integer.parseInt(e.getValue())
));
It's not quite as nice as the list code. You can't construct new Map.Entry
s in a map()
call so the work is mixed into the collect()
call.
Not able to run Appium {“message”:”A new session could not be created. (Original error: ‘java -version’ failed
I used Jdk 1.8 and JRE 1.8
, Classpath
is also set properly but I observed that Java command gives Error to initialization of VM (java/lang/NoClassDefFoundError: java/lang/Object)
Solution:
Uninstalled JRE and JDK completely
Installed JRE 1.8 then
Installed JDK 1.8
Set Classpath
check Java command works or not and its working
also able to execute the Appium program thru Eclipse Kepler Service Release 2 with JDK1.8 support
An entirely different approach using native things only
First, add the following in the page that is to be printed
<head>
<title>printing please wait</title>
<META http-equiv=Refresh content=2;url="close.html">
</head>
<body onLoad="window.print()">
Then make close.html with following content
<body onLoad="window.close()"></body>
Now when the print dialogue is displayed, the page will remain open. As soon as the print or cancel task is done, the page will close like a breeze.
<div id="map" style="width:100%;height:500px"></div>
<script>
function myMap() {
var myCenter = new google.maps.LatLng(51.508742,-0.120850);
var mapCanvas = document.getElementById("map");
var mapOptions = {center: myCenter, zoom: 5};
var map = new google.maps.Map(mapCanvas, mapOptions);
var marker = new google.maps.Marker({position:myCenter});
marker.setMap(map);
}
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBu-916DdpKAjTmJNIgngS6HL_kDIKU0aU&callback=myMap"></script>
I found this blog post which shows a concise way:
git log --oneline --abbrev-commit --all --graph --decorate --color
I usually create an alias for the above command:
alias gl='git log --oneline --abbrev-commit --all --graph --decorate --color'
and simple just use gl
.
You can also add the alias to the git config . Open ~/.gitconfig
and add the following line to the [alias]
[alias]
lg = log --oneline --abbrev-commit --all --graph --decorate --color
and use it like this: git lg
You can also use a shorter way:
<?php header('Content-Type: charset=utf-8'); ?>
See RFC 2616. It's valid to specify only character set.
I wanted to find the same and the UK Government Data Standards mentioned in the accepted answer sounded ideal. However none of these seemed to exist any more - after an extended search I found it in an archive here: http://webarchive.nationalarchives.gov.uk/+/http://www.cabinetoffice.gov.uk/govtalk/schemasstandards/e-gif/datastandards.aspx. Need to download the zip, extract it and then open default.htm in the html folder.
I think that access() function, which is found in unistd.h
is a good choice for Linux
(you can use stat too).
You can Use it like this:
#include <stdio.h>
#include <stdlib.h>
#include<unistd.h>
void fileCheck(const char *fileName);
int main (void) {
char *fileName = "/etc/sudoers";
fileCheck(fileName);
return 0;
}
void fileCheck(const char *fileName){
if(!access(fileName, F_OK )){
printf("The File %s\t was Found\n",fileName);
}else{
printf("The File %s\t not Found\n",fileName);
}
if(!access(fileName, R_OK )){
printf("The File %s\t can be read\n",fileName);
}else{
printf("The File %s\t cannot be read\n",fileName);
}
if(!access( fileName, W_OK )){
printf("The File %s\t it can be Edited\n",fileName);
}else{
printf("The File %s\t it cannot be Edited\n",fileName);
}
if(!access( fileName, X_OK )){
printf("The File %s\t is an Executable\n",fileName);
}else{
printf("The File %s\t is not an Executable\n",fileName);
}
}
And you get the following Output:
The File /etc/sudoers was Found
The File /etc/sudoers cannot be read
The File /etc/sudoers it cannot be Edited
The File /etc/sudoers is not an Executable
There are three options, that you can use. -I
is to exclude binary files in grep. Other are for line numbers and file names.
grep -I -n -H
-I -- process a binary file as if it did not contain matching data;
-n -- prefix each line of output with the 1-based line number within its input file
-H -- print the file name for each match
So this might be a way to run grep:
grep -InH your-word *
If you use IntelliJ IDEA, try the following:
df[df$aged <= df$laclen, ]
Should do the trick. The square brackets allow you to index based on a logical expression.
Have you tried setting
li {list-style-type: none;}
According to Need an unordered list without any bullets, you need to add this style to the li elements.
Open your terminal and run
curl -sSL https://raw.githubusercontent.com/rvm/rvm/master/binscripts/rvm-installer | bash -s stable
When this is complete, you need to restart your terminal for the rvm
command to work.
Now, run rvm list known
This shows the list of versions of the ruby.
Now, run rvm install ruby@latest
to get the latest ruby version.
If you type ruby -v
in the terminal, you should see ruby X.X.X
.
If it still shows you ruby 2.0.
, run rvm use ruby-X.X.X --default
.
Prerequisites for windows 10:
make
command available otherwise it will complain that "bash: make: command not found". You can install it by running mingw-get install msys-make
You can write following codes to achieve this task:
SELECT ... FROM ... WHERE ...
INTO OUTFILE 'textfile.csv'
FIELDS TERMINATED BY '|'
It export the result to CSV and then export it to excel sheet.
Set.of(CustomType.values())
.contains(customTypevalue)
I've been stewing over this issue for a while especially with trying my hand at TDD.
I've come across two posts that I think address this problem thoroughly enough in the case of TDD.
In Summary:
When using test driven development (design) techniques, private methods should arise only during the re-factoring process of already working and tested code.
By the very nature of the process, any bit of simple implementation functionality extracted out of a thoroughly tested function will be it self tested (i.e. indirect testing coverage).
To me it seems clear enough that in the beginning part of coding most methods will be higher level functions because they are encapsulating/describing the design.
Therefore, these methods will be public and testing them will be easy enough.
The private methods will come later once everything is working well and we are re factoring for the sake of readability and cleanliness.
document.getElementById('foo').disabled = true;
or
document.getElementById('foo').readOnly = true;
Note that readOnly
should be in camelCase to work correctly in Firefox (magic).
Demo: https://jsfiddle.net/L96svw3c/ -- somewhat explains the difference between disabled
and readOnly
.
(^|\s)
would match space or start of string and ($|\s)
for space or end of string. Together it's:
(^|\s)stackoverflow($|\s)
You want to do the check for undefined
first. If you do it the other way round, it will generate an error if the array is undefined.
if (array === undefined || array.length == 0) {
// array empty or does not exist
}
This answer is getting a fair amount of attention, so I'd like to point out that my original answer, more than anything else, addressed the wrong order of the conditions being evaluated in the question. In this sense, it fails to address several scenarios, such as null
values, other types of objects with a length
property, etc. It is also not very idiomatic JavaScript.
The foolproof approach
Taking some inspiration from the comments, below is what I currently consider to be the foolproof way to check whether an array is empty or does not exist. It also takes into account that the variable might not refer to an array, but to some other type of object with a length
property.
if (!Array.isArray(array) || !array.length) {
// array does not exist, is not an array, or is empty
// ? do not attempt to process array
}
To break it down:
Array.isArray()
, unsurprisingly, checks whether its argument is an array. This weeds out values like null
, undefined
and anything else that is not an array.
Note that this will also eliminate array-like objects, such as the arguments
object and DOM NodeList
objects. Depending on your situation, this might not be the behavior you're after.
The array.length
condition checks whether the variable's length
property evaluates to a truthy value. Because the previous condition already established that we are indeed dealing with an array, more strict comparisons like array.length != 0
or array.length !== 0
are not required here.
The pragmatic approach
In a lot of cases, the above might seem like overkill. Maybe you're using a higher order language like TypeScript that does most of the type-checking for you at compile-time, or you really don't care whether the object is actually an array, or just array-like.
In those cases, I tend to go for the following, more idiomatic JavaScript:
if (!array || !array.length) {
// array or array.length are falsy
// ? do not attempt to process array
}
Or, more frequently, its inverse:
if (array && array.length) {
// array and array.length are truthy
// ? probably OK to process array
}
With the introduction of the optional chaining operator (Elvis operator) in ECMAScript 2020, this can be shortened even further:
if (!array?.length) {
// array or array.length are falsy
// ? do not attempt to process array
}
Or the opposite:
if (array?.length) {
// array and array.length are truthy
// ? probably OK to process array
}
To assign a non-empty variable without repeating the actual variable name (and without assigning anything if variable is null!), you can use a little helper method with a Action
parameter:
public static void CallIfNonEmpty(string value, Action<string> action)
{
if (!string.IsNullOrEmpty(value))
action(value);
}
And then just use it:
CallIfNonEmpty(this.approved_by, (s) => planRec.approved_by = s);
Well, you may try this '.*[0-9]'
My suggestions here owe a lot to Dan's solution
First off I assume the solution must handle all possible input lists. I think the popular answers do not make this assumption (which IMO is a huge mistake).
It is known that no form of lossless compression will reduce the size of all inputs.
All the popular answers assume they will be able to apply compression effective enough to allow them extra space. In fact, a chunk of extra space large enough to hold some portion of their partially completed list in an uncompressed form and allow them to perform their sorting operations. This is just a bad assumption.
For such a solution, anyone with knowledge of how they do their compression will be able to design some input data that does not compress well for this scheme, and the "solution" will most likely then break due to running out of space.
Instead I take a mathematical approach. Our possible outputs are all the lists of length LEN consisting of elements in the range 0..MAX. Here the LEN is 1,000,000 and our MAX is 100,000,000.
For arbitrary LEN and MAX, the amount of bits needed to encode this state is:
Log2(MAX Multichoose LEN)
So for our numbers, once we have completed recieving and sorting, we will need at least Log2(100,000,000 MC 1,000,000) bits to store our result in a way that can uniquely distinguish all possible outputs.
This is ~= 988kb. So we actually have enough space to hold our result. From this point of view, it is possible.
[Deleted pointless rambling now that better examples exist...]
Best answer is here.
Another good answer is here and basically uses insertion sort as the function to expand the list by one element (buffers a few elements and pre-sorts, to allow insertion of more than one at a time, saves a bit of time). uses a nice compact state encoding too, buckets of seven bit deltas
A jar file is a zip archive. You can extract it using 7zip (a great simple tool to open archives). You can also change its extension to zip and use whatever to unzip the file.
Now you have your class file. There is no easy way to edit class file, because class files are binaries (you won't find source code in there. maybe some strings, but not java code). To edit your class file you can use a tool like classeditor.
You have all the strings your class is using hard-coded in the class file. So if the only thing you would like to change is some strings you can do it without using classeditor.
Maybe you could use this view, but i'm not sure.
select * from v$database;
But I think It will only show you info about the current db.
Other option, if the db is running in linux... whould be something like this:
SQL>!grep SID $TNS_ADMIN/tnsnames.ora | grep -v PLSExtProc
If you look at the output you receive from print()
and also in your Traceback, you'll see the value you get back is not a string, it's a bytes object (prefixed by b
):
b'{\n "note":"This file .....
If you fetch the URL using a tool such as curl -v
, you will see that the content type is
Content-Type: application/json; charset=utf-8
So it's JSON, encoded as UTF-8, and Python is considering it a byte stream, not a simple string. In order to parse this, you need to convert it into a string first.
Change the last line of code to this:
info = json.loads(js.decode("utf-8"))
The schema definition for an attribute determines whether an attribute must have a value. If the manager
attribute in the example given is the attribute defined in RFC4524 with OID 0.9.2342.19200300.100.1.10
, then that attribute has DN syntax. DN syntax is a sequence of relative distinguished names and must not be empty. The filter given in the example is used to cause the LDAP directory server to return only entries that do not have a manager
attribute to the LDAP client in the search result.
Yes, simply set it to another value:
$_POST['text'] = 'another value';
This will override the previous value corresponding to text
key of the array. The $_POST
is superglobal associative array and you can change the values like a normal PHP array.
Caution: This change is only visible within the same PHP execution scope. Once the execution is complete and the page has loaded, the $_POST
array is cleared. A new form submission will generate a new $_POST
array.
If you want to persist the value across form submissions, you will need to put it in the form as an input
tag's value
attribute or retrieve it from a data store.
Your JFrame default close action can be set to "DISPOSE_ON_CLOSE
" instead of EXIT_ON_CLOSE
(why people keep using EXIT_ON_CLOSE is beyond me).
If you have any undisposed windows or non-daemon threads, your application will not terminate. This should be considered a error (and solving it with System.exit is a very bad idea).
The most common culprits are java.util.Timer and a custom Thread you've created. Both should be set to daemon or must be explicitly killed.
If you want to check for all active frames, you can use Frame.getFrames()
. If all Windows/Frames are disposed of, then use a debugger to check for any non-daemon threads that are still running.
This XPath is specific to the code snippet you've provided. To select <child>
with id as #grand
you can write //child[@id='#grand']
.
To get age //child[@id='#grand']/@age
Hope this helps
Don't forget to weakify self if you are using self inside of the closure.
dispatch_async(dispatch_get_main_queue(),{ [weak self] () -> () in
if let strongSelf = self {
self?.doSomething()
}
})
Normally the native way we do things in linux and the way we think is from left to right.
So you would go and write what you are looking for first:
find / -name "*.php"
Then you probably hit enter and realize you are getting too many files from
directories you wish not to.
Let's exclude /media to avoid searching your mounted drives.
You should now just APPEND the following to the previous command:
-print -o -path '/media' -prune
so the final command is:
find / -name "*.php" -print -o -path '/media' -prune
...............|<--- Include --->|....................|<---------- Exclude --------->|
I think this structure is much easier and correlates to the right approach
Compass adjusts the way partials are imported. It allows importing components based solely on their name, without specifying the path.
Before you can do @import 'compass';
, you should:
Install Compass as a Ruby gem:
gem install compass
After that, you should use Compass's own command line tool to compile your SASS code:
cd path/to/your/project/
compass compile
Note that Compass reqiures a configuration file called config.rb
. You should create it for Compass to work.
The minimal config.rb
can be as simple as this:
css_dir = "css"
sass_dir = "sass"
And your SASS code should reside in sass/
.
Instead of creating a configuration file manually, you can create an empty Compass project with compass create <project-name>
and then copy your SASS code inside it.
Note that if you want to use Compass extensions, you will have to:
config.rb
;More info here: http://compass-style.org/help/
You can get all the information of active transaction by the help of below query
SELECT
trans.session_id AS [SESSION ID],
ESes.host_name AS [HOST NAME],login_name AS [Login NAME],
trans.transaction_id AS [TRANSACTION ID],
tas.name AS [TRANSACTION NAME],tas.transaction_begin_time AS [TRANSACTION
BEGIN TIME],
tds.database_id AS [DATABASE ID],DBs.name AS [DATABASE NAME]
FROM sys.dm_tran_active_transactions tas
JOIN sys.dm_tran_session_transactions trans
ON (trans.transaction_id=tas.transaction_id)
LEFT OUTER JOIN sys.dm_tran_database_transactions tds
ON (tas.transaction_id = tds.transaction_id )
LEFT OUTER JOIN sys.databases AS DBs
ON tds.database_id = DBs.database_id
LEFT OUTER JOIN sys.dm_exec_sessions AS ESes
ON trans.session_id = ESes.session_id
WHERE ESes.session_id IS NOT NULL
and it will give below similar result
and you close that transaction by the help below KILL query by refering session id
KILL 77
You shouldn’t use <h1><a name="foo"/>Foo Title</h1>
in any flavor of HTML served as text/html
, because the XML empty element syntax isn’t supported in text/html
. However, <h1><a name="foo">Foo Title</a></h1>
is OK in HTML4. It is not valid in HTML5 as currently drafted.
<h1 id="foo">Foo Title</h1>
is OK in both HTML4 and HTML5. This won’t work in Netscape 4, but you’ll probably use a dozen other features that don’t work in Netscape 4.
Settings > Preferences > Tab Settings Check the "replace by space". Notice above it there is Tab size: 4 Click on the four and a window will open with the option to change the value to another integer.
Put in your desired integer and press the ENTER key.
There you have it <3.
There is no conversion between InputStream/OutputStream and the bytes they are working with. They are made for binary data, and just read (or write) the bytes one by one as is.
A conversion needs to happen when you want to go from byte to char. Then you need to convert using a character set. This happens when you make String or Reader from bytes, which are made for character data.
For example, to check if the DBI module is installed or not, use
perl -e 'use DBI;'
You will see error if not installed. (from http://www.linuxask.com)
A command-line process such cmd.exe
or mysql.exe
will usually read (and execute) whatever you (the user) type in (at the keyboard).
To mimic that, I think you want to use the RedirectStandardInput
property: http://msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo.redirectstandardinput.aspx
BYTE *str1 = "Hello World";
std::string str2((char *)str1); /* construct on the stack */
Alternatively:
std::string *str3 = new std::string((char *)str1); /* construct on the heap */
cout << &str3;
delete str3;
In a real world environment it's never a good idea to work solely with time
, always use datetime
, even better utc
, to avoid conflicts like overnight, daylight saving, different timezones between user and server etc.
So I'd recommend this approach:
import datetime as dt
_now = dt.datetime.now() # or dt.datetime.now(dt.timezone.utc)
_in_5_sec = _now + dt.timedelta(seconds=5)
# get '14:39:57':
_in_5_sec.strftime('%H:%M:%S')
use
keyword from Command Line Interface:PHP Namespaces don't work on the commandline unless you also include or require the php file. When the php file is sitting in the webspace where it is interpreted by the php daemon then you don't need the require line. All you need is the 'use' line.
Create a new directory /home/el/bin
Make a new file called namespace_example.php
and put this code in there:
<?php
require '/home/el/bin/mylib.php';
use foobarwhatever\dingdong\penguinclass;
$mypenguin = new penguinclass();
echo $mypenguin->msg();
?>
Make another file called mylib.php
and put this code in there:
<?php
namespace foobarwhatever\dingdong;
class penguinclass
{
public function msg() {
return "It's a beautiful day chris, come out and play! " .
"NO! *SLAM!* taka taka taka taka.";
}
}
?>
Run it from commandline like this:
el@apollo:~/bin$ php namespace_example.php
Which prints:
It's a beautiful day chris, come out and play!
NO! *SLAM!* taka taka taka taka
See notes on this in the comments here: http://php.net/manual/en/language.namespaces.importing.php
var data = [
{"Id": 10004, "PageName": "club"},
{"Id": 10040, "PageName": "qaz"},
{"Id": 10059, "PageName": "jjjjjjj"}
];
$.each(data, function(i, item) {
alert(data[i].PageName);
});?
$.each(data, function(i, item) {
alert(item.PageName);
});?
Or else You can try this method
var data = jQuery.parseJSON(response);
$.each(data, function(key,value) {
alert(value.Id); //It will shows the Id values
});
Here the command to remove cordova and ionic from your machine
npm uninstall cordova ionic
If the text is a simple markup and has existing anchors, stage the existing anchor tags first, swap out the urls, then replace the staged markers.
$text = '
Lorem Ipsum is simply dummy text found by searching http://google.com/?q=lorem in your <a href=https://www.mozilla.org/en-US/firefox/>Firefox</a>,
<a href="https://www.apple.com/safari/">Safari</a>, or https://www.google.com/chrome/ browser.
Link replacements will first stage existing anchor tags, replace each with a marker, then swap out the remaining links.
Links should be properly encoded. If links are not separated from surrounding content like a trailing "." period then they it will be included in the link.
Links that are not encoded properly may create a problem, so best to use this when you know the text you are processing is not mixed HTML.
Example: http://google.com/i,m,complicate--d/index.html
Example: https://www.google.com/chrome/?123&t=123
Example: http://google.com/?q='. urlencode('<a href="http://google.com">http://google.com</a>') .'
';
// Replace existing links with a marker
$linkStore = array();
$text = preg_replace_callback('/(<a.*?a>)/', function($match) use (&$linkStore){ $key = '__linkStore'.count($linkStore).'__'; $linkStore[$key] = $match[0]; return $key; }, $text);
// Replace remaining URLs with an anchor tag
$text = preg_replace_callback("/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/", function($match) use (&$linkStore){ return '<a href="'. $match[0] .'">'. $match[0] .'</a>'; }, $text);
// Replace link markers with original
$text = str_replace(array_keys($linkStore), array_values($linkStore), $text);
echo '<pre>'.$text;
I think you're a little confused. PYTHONPATH sets the search path for importing python modules, not for executing them like you're trying.
PYTHONPATH Augment the default search path for module files. The format is the same as the shell’s PATH: one or more directory pathnames separated by os.pathsep (e.g. colons on Unix or semicolons on Windows). Non-existent directories are silently ignored.
In addition to normal directories, individual PYTHONPATH entries may refer to zipfiles containing pure Python modules (in either source or compiled form). Extension modules cannot be imported from zipfiles.
The default search path is installation dependent, but generally begins with prefix/lib/pythonversion (see PYTHONHOME above). It is always appended to PYTHONPATH.
An additional directory will be inserted in the search path in front of PYTHONPATH as described above under Interface options. The search path can be manipulated from within a Python program as the variable sys.path.
http://docs.python.org/2/using/cmdline.html#envvar-PYTHONPATH
What you're looking for is PATH.
export PATH=$PATH:/home/randy/lib/python
However, to run your python script as a program, you also need to set a shebang for Python in the first line. Something like this should work:
#!/usr/bin/env python
And give execution privileges to it:
chmod +x /home/randy/lib/python/gbmx.py
Then you should be able to simply run gmbx.py
from anywhere.
MYSQL 5.5 One sql insert statement took ~300 to ~450ms. while the below stats is for inline multiple insert statments.
(25492 row(s) affected)
Execution Time : 00:00:03:343
Transfer Time : 00:00:00:000
Total Time : 00:00:03:343
I would say inline is way to go :)
In newer version of git (2.23+) you can use:
git switch -C master origin/master
-C
is same as --force-create
. Related Reference Docs
foreach (DataTable table in dataSet.Tables)
{
foreach (DataRow row in table.Rows)
{
foreach (object item in row.ItemArray)
{
// read item
}
}
}
Or, if you need the column info:
foreach (DataTable table in dataSet.Tables)
{
foreach (DataRow row in table.Rows)
{
foreach (DataColumn column in table.Columns)
{
object item = row[column];
// read column and item
}
}
}
Fall through approach is the best one i feel.
case text1:
case text4: {
//Yada yada
break;
}
to do this in a loop, you can do:
display(HTML("".join([f"<a href='{url}'>{url}</a></br>" for url in urls])))
This essentially creates the html text in a loop, and then uses the display(HTML()) construct to display the whole string as HTML
In Python 3 the dict.values()
method returns a dictionary view object, not a list like it does in Python 2. Dictionary views have a length, can be iterated, and support membership testing, but don't support indexing.
To make your code work in both versions, you could use either of these:
{names[i]:value for i,value in enumerate(d.values())}
or
values = list(d.values())
{name:values[i] for i,name in enumerate(names)}
By far the simplest, fastest way to do the same thing in either version would be:
dict(zip(names, d.values()))
Note however, that all of these methods will give you results that will vary depending on the actual contents of d
. To overcome that, you may be able use an OrderedDict instead, which remembers the order that keys were first inserted into it, so you can count on the order of what is returned by the values()
method.
Something like this (not tested, but should work)
Pass this as parameter in Html:
<input type="text" placeholder="some text" class="search" onkeydown="search(this)"/>
And alert the value of the parameter passed into the search function:
function search(e){
alert(e.value);
}
python -m notebook
jupyter notebook
Swift 2.x answer:
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)) {
self.getResultSetFromDB(docids)
}
With me the problem was solved by removing the type
attribute:
<embed name="myMusic" loop="true" hidden="true" src="Music.mp3"></embed>
Cerntainly not the cleanest way.
If you're using HTML5: MP3 isn't supported by Firefox. Wav and Ogg are though. Here you can find an overview of which browser support which type of audio: http://www.w3schools.com/html/html5_audio.asp
You can use the
load_source(module_name, path_to_file)
method from imp module.
I had a similar problem with pip and easy_install:
Cannot fetch index base URL https://pypi.python.org/simple/
As suggested in the referenced blog post, there must be an issue with some older versions of OpenSSL being incompatible with pip 1.3.1.
Installing pip-1.2.1 is a working workaround.
[Edit]:
This definitely happens in RHEL/CentOS 4 distros
What about this one :
<DockPanel Margin="8">
<Border CornerRadius="6" BorderBrush="Gray" Background="LightGray" BorderThickness="2" DockPanel.Dock="Top">
<StackPanel Orientation="Horizontal">
<TextBlock FontSize="14" Padding="0 0 8 0" HorizontalAlignment="Center" VerticalAlignment="Center">Search:</TextBlock>
<TextBox x:Name="txtSearchTerm" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Image Source="lock.png" Width="32" Height="32" HorizontalAlignment="Center" VerticalAlignment="Center" />
</StackPanel>
</Border>
<StackPanel Orientation="Horizontal" DockPanel.Dock="Bottom" Height="25" />
</DockPanel>
You can use VBScript regular expression features using OLE Automation. This is way better than the overhead of creating and maintaining an assembly. Please make sure you go through the comments section to get a better modified version of the main one.
http://blogs.msdn.com/b/khen1234/archive/2005/05/11/416392.aspx
DECLARE @obj INT, @res INT, @match BIT;
DECLARE @pattern varchar(255) = '<your regex pattern goes here>';
DECLARE @matchstring varchar(8000) = '<string to search goes here>';
SET @match = 0;
-- Create a VB script component object
EXEC @res = sp_OACreate 'VBScript.RegExp', @obj OUT;
-- Apply/set the pattern to the RegEx object
EXEC @res = sp_OASetProperty @obj, 'Pattern', @pattern;
-- Set any other settings/properties here
EXEC @res = sp_OASetProperty @obj, 'IgnoreCase', 1;
-- Call the method 'Test' to find a match
EXEC @res = sp_OAMethod @obj, 'Test', @match OUT, @matchstring;
-- Don't forget to clean-up
EXEC @res = sp_OADestroy @obj;
If you get SQL Server blocked access to procedure 'sys.sp_OACreate'...
error, use sp_reconfigure
to enable Ole Automation Procedures
. (Yes, unfortunately that is a server level change!)
More information about the Test
method is available here
Happy coding
We can use ng-src
but when ng-src's value
became null
, ''
or undefined
, ng-src
will not work.
So just use ng-if
for this case:
http://jsfiddle.net/Hx7B9/299/
<div ng-app>
<div ng-controller="AppCtrl">
<a href='#'><img ng-src="{{link}}" ng-if="!!link"/></a>
<button ng-click="changeLink()">Change Image</button>
</div>
</div>
@echo off
color 0a
set /p language=
if %language% == DE (
goto LGDE
) else (
if %language% == EN (
goto LGEN
) else (
echo N/A
)
:LGDE
(code)
:LGEN
(code)
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()
.
As MrFancypants mentioned in the comments, if you are using Jupyter (which you should, since it currently supersedes the older IPython Notebook project), things are a little different. For one, there are no profiles any more.
After installing Jupyter, first check your ~/.jupyter folder to see its content. If no config files were migrated from the default IPython profile (as they weren't in my case), create a new one for Jupyter Notebook:
jupyter notebook --generate-config
This generates ~/.jupyter/jupyter_notebook_config.py file with some helpfully commented possible options. To set the default directory add:
c.NotebookApp.notebook_dir = u'/absolute/path/to/notebook/directory'
As I switch between Linux and OS X, I wanted to use a path relative to my home folder (as they differ – /Users/username and /home/username), so I set something like:
import os
c.NotebookApp.notebook_dir = os.path.expanduser('~/Dropbox/dev/notebook')
Now, whenever I run jupyter notebook
, it opens my desired notebook folder. I also version the whole ~/.jupyter folder in my dotfiles repository that I deploy to every new work machine.
As an aside, you can still use the --notebook-dir
command line option, so maybe a simple alias would suit your needs better.
jupyter notebook --notebook-dir=/absolute/path/to/notebook/directory
I've resolved the issue, by going to setting and permalink, just choose post-name.
it should work and you'll see the exact page.. rather than dashboard/xampp page again
Best of Luck
You can simply use the following:
$intVal = 5;
$strVal = trim($intVal);
Another to answer this question available here answered by @nilesh https://stackoverflow.com/a/19934852/2079692
public void setAttributeValue(WebElement elem, String value){
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].setAttribute(arguments[1],arguments[2])",
elem, "value", value
);
}
this takes advantage of selenium findElementBy function where xpath can be used also.
You can also do it as a one-liner directly in your crontab:
* * * * * [ `ps -ef|grep -v grep|grep <command>` -eq 0 ] && <command>
Credit must be given to IronRazerz in a response to TextBox watermark (CueBanner) which goes away when user types in single line TextBox (not for RichTextBox).
You will need to declare the following in your class:
private const int CB_SETCUEBANNER = 0x1703;
[System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
private static extern int SendMessage(IntPtr hWnd, int msg, int wParam, [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]string lParam);
Then you can use it with something like:
SendMessage(this.comboBox1.Handle, CB_SETCUEBANNER, 0, "Please select an item...");
This is assuming the Combo Box's DropDownStyle
is set to DropDownList
, as is the original poster's question.
This should result in something like the following:
We need to check if passed string is not numeric because in this case json_decode raises no error.
function isJson($str) {
$result = false;
if (!preg_match("/^\d+$/", trim($str))) {
json_decode($str);
$result = (json_last_error() == JSON_ERROR_NONE);
}
return $result;
}
This Works for me in PySpark
df.select("column").collect()[0][0]
The post is old but I found a perfect CSS for the purpose and I want to share it.
A sticky element toggles between relative and fixed, depending on the scroll position. It is positioned relative until a given offset position is met in the viewport - then it "sticks" in place (like position:fixed).
div.sticky {
position: -webkit-sticky; /* Safari */
position: sticky;
top: 0;
background-color: green;
border: 2px solid #4CAF50;
}