One way to do this would be to pass the instance of ParentClass
to the ChildClass
on construction
public ChildClass
{
private ParentClass parent;
public ChildClass(ParentClass parent)
{
this.parent = parent;
}
public void LoadData(DateTable dt)
{
// do something
parent.CurrentRow++; // or whatever.
parent.UpdateProgressBar(); // Call the method
}
}
Make sure to pass the reference to this
when constructing ChildClass
inside parent:
if(loadData){
ChildClass childClass = new ChildClass(this); // here
childClass.LoadData(this.Datatable);
}
Caveat: This is probably not the best way to organise your classes, but it directly answers your question.
EDIT: In the comments you mention that more than 1 parent class wants to use ChildClass
. This is possible with the introduction of an interface, eg:
public interface IParentClass
{
void UpdateProgressBar();
int CurrentRow{get; set;}
}
Now, make sure to implement that interface on both (all?) Parent Classes and change child class to this:
public ChildClass
{
private IParentClass parent;
public ChildClass(IParentClass parent)
{
this.parent = parent;
}
public void LoadData(DateTable dt)
{
// do something
parent.CurrentRow++; // or whatever.
parent.UpdateProgressBar(); // Call the method
}
}
Now anything that implements IParentClass
can construct an instance of ChildClass
and pass this
to its constructor.
Try the following command.
:set binary
In VIM, this should do the same thing as using the "-b" command line option. If you put this in your startup (i.e. .vimrc) file, it will always be in place for you.
On many *nix systems, there is a "dos2unix" or "unix2dos" command that can process the file and correct any suspected line ending issues. If there is no problem with the line endings, the files will not be changed.
The zip()
function in Python 3 returns an iterator. That is the reason why when you print test1
you get - <zip object at 0x1007a06c8>
. From documentation -
Make an iterator that aggregates elements from each of the iterables.
But once you do - list(test1)
- you have exhausted the iterator. So after that anytime you do list(test1)
would only result in empty list.
In case of test2
, you have already created the list once, test2
is a list, and hence it will always be that list.
No, there is no built-in support for building strings. You have to use concatenation instead.
You can, of course, make an array of different parts of your string and then call join()
on that array, but it then depends on how the join is implemented in the JavaScript interpreter you are using.
I made an experiment to compare the speed of str1+str2
method versus array.push(str1, str2).join()
method. The code was simple:
var iIterations =800000;
var d1 = (new Date()).valueOf();
str1 = "";
for (var i = 0; i<iIterations; i++)
str1 = str1 + Math.random().toString();
var d2 = (new Date()).valueOf();
log("Time (strings): " + (d2-d1));
var d3 = (new Date()).valueOf();
arr1 = [];
for (var i = 0; i<iIterations; i++)
arr1.push(Math.random().toString());
var str2 = arr1.join("");
var d4 = (new Date()).valueOf();
log("Time (arrays): " + (d4-d3));
I tested it in Internet Explorer 8 and Firefox 3.5.5, both on a Windows 7 x64.
In the beginning I tested on small number of iterations (some hundred, some thousand items). The results were unpredictable (sometimes string concatenation took 0 milliseconds, sometimes it took 16 milliseconds, the same for array joining).
When I increased the count to 50,000, the results were different in different browsers - in Internet Explorer the string concatenation was faster (94 milliseconds) and join was slower(125 milliseconds), while in Firefox the array join was faster (113 milliseconds) than string joining (117 milliseconds).
Then I increased the count to 500'000. Now the array.join()
was slower than string concatenation in both browsers: string concatenation was 937 ms in Internet Explorer, 1155 ms in Firefox, array join 1265 in Internet Explorer, and 1207 ms in Firefox.
The maximum iteration count I could test in Internet Explorer without having "the script is taking too long to execute" was 850,000. Then Internet Explorer was 1593 for string concatenation and 2046 for array join, and Firefox had 2101 for string concatenation and 2249 for array join.
Results - if the number of iterations is small, you can try to use array.join()
, as it might be faster in Firefox. When the number increases, the string1+string2
method is faster.
I performed the test on Internet Explorer 6 (Windows XP). The process stopped to respond immediately and never ended, if I tried the test on more than 100,000 iterations. On 40,000 iterations the results were
Time (strings): 59175 ms
Time (arrays): 220 ms
This means - if you need to support Internet Explorer 6, choose array.join()
which is way faster than string concatenation.
The problem is NOT about Execution failed for task ':dexDebug'
if you look above the error showed in red you are going to see this
To solve this problem permanently just add these lines in your build.gradle
file
android {
dexOptions {
jumboMode = true
}
}
For further details check this question: here
Here, I summarize a few ways which may return different results to your question, so be careful:
# First assign your "id"s to an R object.
# Here's a hypothetical example:
id <- c("a","b","b","c","c","c","d","d","d","d")
#To return ALL MINUS ONE duplicated values:
id[duplicated(id)]
## [1] "b" "c" "c" "d" "d" "d"
#To return ALL duplicated values by specifying fromLast argument:
id[duplicated(id) | duplicated(id, fromLast=TRUE)]
## [1] "b" "b" "c" "c" "c" "d" "d" "d" "d"
#Yet another way to return ALL duplicated values, using %in% operator:
id[ id %in% id[duplicated(id)] ]
## [1] "b" "b" "c" "c" "c" "d" "d" "d" "d"
Hope these help. Good luck.
Here's an example that will center the content within the parent div. This also makes sure the overlay starts at the edge of the video, even when centered.
<div class="outer-container">
<div class="inner-container">
<div class="video-overlay">Bug Buck Bunny - Trailer</div>
<video id="player" src="http://video.webmfiles.org/big-buck-bunny_trailer.webm" controls autoplay loop></video>
</div>
</div>
with css as
.outer-container {
border: 1px dotted black;
width: 100%;
height: 100%;
text-align: center;
}
.inner-container {
border: 1px solid black;
display: inline-block;
position: relative;
}
.video-overlay {
position: absolute;
left: 0px;
top: 0px;
margin: 10px;
padding: 5px 5px;
font-size: 20px;
font-family: Helvetica;
color: #FFF;
background-color: rgba(50, 50, 50, 0.3);
}
video {
width: 100%;
height: 100%;
}
here's the jsfiddle https://jsfiddle.net/dyrepk2x/2/
Hope that helps :)
I have solved this issue for me. Try to change all Deny
values to Allow
in file %SYSTEM_DRIVE%\Program Files\IIS Express\AppServer\applicationhost.xml
. Please, take into account what IIS Express Web Server you are using in Visual Studio Settings, 32 bit or 64 bit, that means I have to check the file in different folders. Then restart Visual Studio. I don't know about security issues for those config lines, so change them at your own risk, but it has solved my problem.
<section name="asp" overrideModeDefault="Allow" />
<section name="caching" overrideModeDefault="Allow" />
<section name="cgi" overrideModeDefault="Allow" />
<section name="defaultDocument" overrideModeDefault="Allow" />
<section name="directoryBrowse" overrideModeDefault="Allow" />
<section name="fastCgi" allowDefinition="AppHostOnly" overrideModeDefault="Allow" />
<section name="globalModules" allowDefinition="AppHostOnly" overrideModeDefault="Allow" />
<section name="handlers" overrideModeDefault="Allow" />
<section name="httpCompression" overrideModeDefault="Allow" />
<section name="httpErrors" overrideModeDefault="Allow" />
<section name="httpLogging" overrideModeDefault="Allow" />
<section name="httpProtocol" overrideModeDefault="Allow" />
etc.
If you are tired of typing your password, create a (chmod 600) file ~/.my.cnf
, and put in it:
[client]
user = "you"
password = "your-password"
For the sake of conversation:
echo 'DROP DATABASE foo;' | mysql
Show Notificaton in android 8.0
@TargetApi(Build.VERSION_CODES.O)
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
public void show_Notification(){
Intent intent=new Intent(getApplicationContext(),MainActivity.class);
String CHANNEL_ID="MYCHANNEL";
NotificationChannel notificationChannel=new NotificationChannel(CHANNEL_ID,"name",NotificationManager.IMPORTANCE_LOW);
PendingIntent pendingIntent=PendingIntent.getActivity(getApplicationContext(),1,intent,0);
Notification notification=new Notification.Builder(getApplicationContext(),CHANNEL_ID)
.setContentText("Heading")
.setContentTitle("subheading")
.setContentIntent(pendingIntent)
.addAction(android.R.drawable.sym_action_chat,"Title",pendingIntent)
.setChannelId(CHANNEL_ID)
.setSmallIcon(android.R.drawable.sym_action_chat)
.build();
NotificationManager notificationManager=(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.createNotificationChannel(notificationChannel);
notificationManager.notify(1,notification);
}
In swift :
#if (arch(i386) || arch(x86_64))
...
#endif
From Detect if app is being built for device or simulator in Swift
An alternative approach might be to use another table to contain id values. This other table can then be inner joined on your TABLE to constrain returned rows. This will have the major advantage that you won't need dynamic SQL (problematic at the best of times), and you won't have an infinitely long IN clause.
You would truncate this other table, insert your large number of rows, then perhaps create an index to aid the join performance. It would also let you detach the accumulation of these rows from the retrieval of data, perhaps giving you more options to tune performance.
Update: Although you could use a temporary table, I did not mean to imply that you must or even should. A permanent table used for temporary data is a common solution with merits beyond that described here.
Try using the trigger property for this:
$('select').select2().trigger('change');
I have the same error than you.
npm uninstall webpack --save-dev
&
npm install [email protected] --save-dev
solve it!.
jezrael's answer is good, but did not answer a question I had: Will getting the "sort" flag wrong mess up my data in any way? The answer is apparently "no", you are fine either way.
from pandas import DataFrame, concat
a = DataFrame([{'a':1, 'c':2,'d':3 }])
b = DataFrame([{'a':4,'b':5, 'd':6,'e':7}])
>>> concat([a,b],sort=False)
a c d b e
0 1 2.0 3 NaN NaN
0 4 NaN 6 5.0 7.0
>>> concat([a,b],sort=True)
a b c d e
0 1 NaN 2.0 3 NaN
0 4 5.0 NaN 6 7.0
this worked for me .
const filterData = this.state.data2.filter(item=>((item.name.includes(text)) || (item.surname.includes(text)) || (item.email.includes(text)) || (item.userId === Number(text))) ) ;
If you are using Java 6, you can use the following oneliner to read an integer from console:
int n = Integer.parseInt(System.console().readLine());
You need to use Integer.parseInt(String)
private void jTextField2MouseClicked(java.awt.event.MouseEvent evt) {
if(evt.getSource()==jTextField2){
int jml = Integer.parseInt(jTextField3.getText());
jTextField1.setText(numberToWord(jml));
}
}
I tried most of the (upvoted) solutions here but in docker 17.09 (in 2018) there is no longer /var/lib/docker/aufs folder.
This simple docker cp
solved this task.
docker cp c:\path\to\local\file container_name:/path/to/target/dir/
How to get container_name?
docker ps
There is a NAMES
section. Don't use aIMAGE
.
I know this has been answered but wanted to provide alternate solution for anyone in the future:
You can use .loc
to subset the dataframe by only values that are notnull()
, and then subset out the 'x'
column only. Take that same vector, and apply(int)
to it.
If column x is float:
df.loc[df['x'].notnull(), 'x'] = df.loc[df['x'].notnull(), 'x'].apply(int)
In python cv2
not updated the division calculation. so, you must include from __future__ import division
in first line of the program.
Evidently, Eclipse does not automatically know where the source code for the dependent jars are. It is not clear why debugger could not inspect variables once the source was attached. One possibility is incorrect/incompatible source.
Assuming you have a maven project and the sources of the dependencies are downloaded and available in the local repository, you may want to install m2eclipse, the maven eclipse plugin and see if that helps in addressing your issue.
OP's problem was related with HTML coding. But if you are using plain text, please use "\n" and not "\r\n".
My personal use case: using mailx mailer, simply replacing "\r\n" into "\n" fixed my issue, related with wrong automatic Content-Type setting.
Wrong header:
User-Agent: Heirloom mailx 12.4 7/29/08
MIME-Version: 1.0
Content-Type: application/octet-stream
Content-Transfer-Encoding: base64
Correct header:
User-Agent: Heirloom mailx 12.4 7/29/08
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
I'm not saying that "application/octet-stream" and "base64" are always wrong/unwanted, but they where in my case.
def rounding(float,precision)
return ((float * 10**precision).round.to_f) / (10**precision)
end
I've received the same error when working in a Spring Boot Application because when running as Spring Boot, it's easy to do localhost:8080/hello/World
but when you've built the artifact and deployed to Tomcat, then you need to switch to using localhost:8080/<artifactName>/hello/World
There should be no semicolon here:
class WordGame;
...but there should be one at the end of your class definition:
...
private:
string theWord;
}; // <-- Semicolon should be at the end of your class definition
Volatile tells the compiler not to optimize anything that has to do with the volatile variable.
There are at least three common reasons to use it, all involving situations where the value of the variable can change without action from the visible code: When you interface with hardware that changes the value itself; when there's another thread running that also uses the variable; or when there's a signal handler that might change the value of the variable.
Let's say you have a little piece of hardware that is mapped into RAM somewhere and that has two addresses: a command port and a data port:
typedef struct
{
int command;
int data;
int isbusy;
} MyHardwareGadget;
Now you want to send some command:
void SendCommand (MyHardwareGadget * gadget, int command, int data)
{
// wait while the gadget is busy:
while (gadget->isbusy)
{
// do nothing here.
}
// set data first:
gadget->data = data;
// writing the command starts the action:
gadget->command = command;
}
Looks easy, but it can fail because the compiler is free to change the order in which data and commands are written. This would cause our little gadget to issue commands with the previous data-value. Also take a look at the wait while busy loop. That one will be optimized out. The compiler will try to be clever, read the value of isbusy just once and then go into an infinite loop. That's not what you want.
The way to get around this is to declare the pointer gadget as volatile. This way the compiler is forced to do what you wrote. It can't remove the memory assignments, it can't cache variables in registers and it can't change the order of assignments either:
This is the correct version:
void SendCommand (volatile MyHardwareGadget * gadget, int command, int data)
{
// wait while the gadget is busy:
while (gadget->isbusy)
{
// do nothing here.
}
// set data first:
gadget->data = data;
// writing the command starts the action:
gadget->command = command;
}
Recursive version
x = [1,2,[3,4],[5,[6,[7]]],8,9,[10]]
def flatten_list(k):
result = list()
for i in k:
if isinstance(i,list):
#The isinstance() function checks if the object (first argument) is an
#instance or subclass of classinfo class (second argument)
result.extend(flatten_list(i)) #Recursive call
else:
result.append(i)
return result
flatten_list(x)
#result = [1,2,3,4,5,6,7,8,9,10]
Number((6.688689).toFixed(1)); // 6.7
var number = 6.688689;
var roundedNumber = Math.round(number * 10) / 10;
Use toFixed()
function.
(6.688689).toFixed(); // equal to "7"
(6.688689).toFixed(1); // equal to "6.7"
(6.688689).toFixed(2); // equal to "6.69"
Try this script to get your browser language
<script type="text/javascript">_x000D_
var userLang = navigator.language || navigator.userLanguage; _x000D_
alert ("The language is: " + userLang);_x000D_
</script>
_x000D_
Cheers
If you don't want to use the PRI* macros, another approach for printing ANY integer type is to cast to intmax_t
or uintmax_t
and use "%jd"
or %ju
, respectively. This is especially useful for POSIX (or other OS) types that don't have PRI* macros defined, for instance off_t
.
select convert_tz(now(),@@session.time_zone,'+05:30')
replace '+05:30' with desired timezone. see here - https://stackoverflow.com/a/3984412/2359994
to format into desired time format, eg:
select DATE_FORMAT(convert_tz(now(),@@session.time_zone,'+05:30') ,'%b %d %Y %h:%i:%s %p')
you will get similar to this -> Dec 17 2014 10:39:56 AM
According to the article Chris Corio: Teach Your Apps To Play Nicely With Windows Vista User Account Control, MSDN Magazine, Jan. 2007, only ShellExecute
checks the embedded manifest and prompts the user for elevation if needed, while CreateProcess
and other APIs don't. Hope it helps.
See also: same article as .chm.
You almost had it right. The simplest way is
mylist[0][0] # get the first character from the first item in the list
but
mylist[0][:1] # get up to the first character in the first item in the list
would also work.
You want to end after the first character (character zero), not start after the first character (character zero), which is what the code in your question means.
With:
global index_add_counter
You are not defining, just declaring so it's like saying there is a global index_add_counter
variable elsewhere, and not create a global called index_add_counter
. As you name don't exists, Python is telling you it can not import that name. So you need to simply remove the global
keyword and initialize your variable:
index_add_counter = 0
Now you can import it with:
from app import index_add_counter
The construction:
global index_add_counter
is used inside modules' definitions to force the interpreter to look for that name in the modules' scope, not in the definition one:
index_add_counter = 0
def test():
global index_add_counter # means: in this scope, use the global name
print(index_add_counter)
Use the command line interface:
java -jar jenkins-cli.jar -s http://jenkins.example.com:8080/ -i /root/.ssh/id_rsa safe-restart
To add WebAPI in my MVC 5 project.
Open NuGet Package manager console and run
PM> Install-Package Microsoft.AspNet.WebApi
Add references to System.Web.Routing
, System.Web.Net
and System.Net.Http
dlls if not there already
Right click controllers folder > add new item > web > Add Web API controller
Web.config will be modified accordingly by VS
Add Application_Start
method if not there already
protected void Application_Start()
{
//this should be line #1 in this method
GlobalConfiguration.Configure(WebApiConfig.Register);
}
Add the following class (I added in global.asax.cs file)
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
// Web API routes
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
Modify web api method accordingly
namespace <Your.NameSpace.Here>
{
public class VSController : ApiController
{
// GET api/<controller> : url to use => api/vs
public string Get()
{
return "Hi from web api controller";
}
// GET api/<controller>/5 : url to use => api/vs/5
public string Get(int id)
{
return (id + 1).ToString();
}
}
}
Rebuild and test
Build a simple html page
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="../<path_to_jquery>/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
var uri = '/api/vs';
$(document).ready(function () {
$.getJSON(uri)
.done(function (data) {
alert('got: ' + data);
});
$.ajax({
url: '/api/vs/5',
async: true,
success: function (data) {
alert('seccess1');
var res = parseInt(data);
alert('got res=' + res);
}
});
});
</script>
</head>
<body>
....
</body>
</html>
In simple words, if your client/user can recover from the Exception then make it a Checked Exception, if your client can't do anything to recover from the Exception then make it Unchecked RuntimeException. E.g, a RuntimeException would be a programmatic error, like division by zero, no user can do anything about it but the programmer himself, then it is a RuntimeException.
This is an absurd bug that is severely hampering my work with Excel.
Based on the work arounds posted I came to the following actions as the simplist way to move forward...
Click on the graph you want update - Select CTRL-X, CTRL-V to cut and paste the graph in place... it will be forced to update.
I suspect you mean 'struct', not 'strict', and 'char' instead of 'Char'.
The size will be implementation dependent. On most 32-bit systems, it will probably be 5 -- 4 bytes for the pointer, one for the char. I don't believe alignment will come into play here. If you swapped 'c' and 'b', however, the size may grow to 8 bytes.
Ok, I tried it out (g++ 4.2.3, with -g option) and I get 8.
These come from the class version. If you try to load something compiled for java 6 in a java 5 runtime you'll get the error, incompatible class version, got 50, expected 49. Or something like that.
See here in byte offset 7 for more info.
Additional info can also be found here.
Here is an addition to Shay Levi's suggestion (just add these lines at the beginning of a script):
if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{
$arguments = "& '" +$myinvocation.mycommand.definition + "'"
Start-Process powershell -Verb runAs -ArgumentList $arguments
Break
}
This results in the current script being passed to a new powershell process in Administrator mode (if current User has access to Administrator mode and the script is not launched as Administrator).
The select box arrow is a native ui element, it depends on the desktop theme or the web browser. Use a jQuery plugin (e.g. Select2, Chosen) or CSS.
As a rule of thumb: YOU SHOULD NEVER EVER SET A PASSWORD FOR THE POSTGRES USER.
If you need a superuser access from pgAdmin, make another superuser. That way, if the credentials for that superuser is compromised, you can always ssh into the actual database host and manually delete the superuser using
sudo -u postgres -c "DROP ROLE superuser;"
This happened to me when I was using 'shutil.copyfile' instead of 'shutil.copy'. The permissions were messed up.
A simple tkinter code for Python 3 for setting background image .
from tkinter import *
from tkinter import messagebox
top = Tk()
C = Canvas(top, bg="blue", height=250, width=300)
filename = PhotoImage(file = "C:\\Users\\location\\imageName.png")
background_label = Label(top, image=filename)
background_label.place(x=0, y=0, relwidth=1, relheight=1)
C.pack()
top.mainloop
Use below code to data read and convert into numpy array
import h5py
f1 = h5py.File('data_1.h5', 'r')
list(f1.keys())
X1 = f1['x']
y1=f1['y']
df1= np.array(X1.value)
dfy1= np.array(y1.value)
print (df1.shape)
print (dfy1.shape)
You can catch form input values using FormData and send them by fetch
fetch(form.action,{method:'post', body: new FormData(form)});
function send(e,form) {_x000D_
fetch(form.action,{method:'post', body: new FormData(form)});_x000D_
_x000D_
console.log('We send post asynchronously (AJAX)');_x000D_
e.preventDefault();_x000D_
}
_x000D_
<form method="POST" action="myapi/send" onsubmit="send(event,this)">_x000D_
<input hidden name="crsfToken" value="a1e24s1">_x000D_
<input name="email" value="[email protected]">_x000D_
<input name="phone" value="123-456-789">_x000D_
<input type="submit"> _x000D_
</form>_x000D_
_x000D_
Look on chrome console>network before 'submit'
_x000D_
I think the proxy_set_header
directive could help:
location / {
proxy_pass http://my_app_upstream;
proxy_set_header Host $host;
# ...
}
You could convert it to a string instead of printing the list directly:
print(", ".join(LIST))
If the elements in the list aren't strings, you can convert them to string using either repr
(if you want quotes around strings) or str
(if you don't), like so:
LIST = [1, "foo", 3.5, { "hello": "bye" }]
print( ", ".join( repr(e) for e in LIST ) )
Which gives the output:
1, 'foo', 3.5, {'hello': 'bye'}
NO, it does NOT work in Access 2013, only 2007/2010. There is no way to really convert an MDB to ACCDB in Access 2013.
Another really silly cause of this is having the selector defined in the interface(.h) but not in the implementation(.m) (p.e. typo)
There are two pages: Pageone.html :
<script>
var hello = "hi"
location.replace("http://example.com/PageTwo.html?" + hi + "");
</script>
PageTwo.html :
<script>
var link = window.location.href;
link = link.replace("http://example.com/PageTwo.html?","");
document.write("The variable contained this content:" + link + "");
</script>
Hope it helps!
In my case I was using Windows 7 with the 64-bit OS. We installed the 64-bit Java SE and 64-bit ADT Bundle. With that set up, we couldn't get the SDK manager to work correctly (specifically, no downloads allowed and it didn't show all the API download options). After trying all of the above answers and from other posts, we decided to look into the Java set up and realized it might the 64-bit configuration that's giving the ADT bundle grief (I vaguely recall seeing/reading this issue before).
So we uninstalled Java 64-bit and reinstalled the 32-bit, and then used the 32-bit ADT bundle, and it worked correctly. The system user was already an admin, so we didn't need to "Run as Administrator"
$ echo "C:\Windows\Folder\File.txt" | sed -e 's/\\/\//g'
C:/Windows/Folder/File.txt
The sed command in this case is 's/OLD_TEXT/NEW_TEXT/g'
.
The leading 's' just tells it to search for OLD_TEXT and replace it with NEW_TEXT.
The trailing 'g' just says to replace all occurrences on a given line, not just the first.
And of course you need to separate the 's', the 'g', the old, and the new from each other. This is where you must use forward slashes as separators.
For your case OLD_TEXT == '\'
and NEW_TEXT == '/'
. But you can't just go around typing slashes and expecting things to work as expected be taken literally while using them as separators at the same time. In general slashes are quite special and must be handled as such. They must be 'escaped' (i.e. preceded) by a backslash.
So for you, OLD_TEXT == '\\'
and NEW_TEXT == '\/'
. Putting these inside the 's/OLD_TEXT/NEW_TEXT/g'
paradigm you get
's/\\/\//g'
. That reads as
's
/ \\
/ \/
/ g
' and after escapes is
's
/ \
/ /
/ g
' which will replace all backslashes with forward slashes.
You can use the built-in filter function to filter dictionaries, lists, etc. based on specific conditions.
filtered_dict = dict(filter(lambda item: filter_str in item[0], d.items()))
The advantage is that you can use it for different data structures.
GitHub Flavored Markdown doesn't support footnotes, but you can manually fake it¹ with Unicode characters or superscript tags, e.g. <sup>1</sup>
.
¹Of course this isn't ideal, as you are now responsible for maintaining the numbering of your footnotes. It works reasonably well if you only have one or two, though.
What's the problem , in fact ?
If you really need or want 10 a, b, c, d, e, f, g, h, i, j , there will be no other possibility, at a time or another, to write a and write b and write c.....
If the values are all different, you will be obliged to write for exemple
a = 12
b= 'sun'
c = A() #(where A is a class)
d = range(1,102,5)
e = (line in filehandler if line.rstrip())
f = 0,12358
g = True
h = random.choice
i = re.compile('^(!= ab).+?<span>')
j = [78,89,90,0]
that is to say defining the "variables" individually.
Or , using another writing, no need to use _
:
a,b,c,d,e,f,g,h,i,j =\
12,'sun',A(),range(1,102,5),\
(line for line in filehandler if line.rstrip()),\
0.12358,True,random.choice,\
re.compile('^(!= ab).+?<span>'),[78,89,90,0]
or
a,b,c,d,e,f,g,h,i,j =\
(12,'sun',A(),range(1,102,5),
(line for line in filehandler if line.rstrip()),
0.12358,True,random.choice,
re.compile('^(!= ab).+?<span>'),[78,89,90,0])
.
If some of them must have the same value, is the problem that it's too long to write
a, b, c, d, e, f, g, h, i, j = True, True, True, True, True, False, True ,True , True, True
?
Then you can write:
a=b=c=d=e=g=h=i=k=j=True
f = False
.
I don't understand what is exactly your problem. If you want to write a code, you're obliged to use the characters required by the writing of the instructions and definitions. What else ?
I wonder if your question isn't the sign that you misunderstand something.
When one writes a = 10
, one don't create a variable in the sense of "chunk of memory whose value can change". This instruction:
either triggers the creation of an object of type integer
and value 10 and the binding of a name 'a' with this object in the current namespace
or re-assign the name 'a' in the namespace to the object 10 (because 'a' was precedently binded to another object)
I say that because I don't see the utility to define 10 identifiers a,b,c... pointing to False or True. If these values don't change during the execution, why 10 identifiers ? And if they change, why defining the identifiers first ?, they will be created when needed if not priorly defined
Your question appears weird to me
I prefer using the following solution for handling onClick events. This works for Activity and Fragments as well.
public class StartFragment extends Fragment implements OnClickListener{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_start, container, false);
Button b = (Button) v.findViewById(R.id.StartButton);
b.setOnClickListener(this);
return v;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.StartButton:
...
break;
}
}
}
SELECT
MyParts.*,MyPriceDate.Price,MyPriceDate.PriceDate
FROM MyParts
INNER JOIN (SELECT Partid, MAX(PriceDate) AS MaxPriceDate FROM MyPrice GROUP BY Partid) dt ON MyParts.Partid = dt.Partid
INNER JOIN MyPrice ON dt.Partid = MyPrice.Partid AND MyPrice.PriceDate=dt.MaxPriceDate
In my opinion the best solution.
- (void)didMoveToParentViewController:(UIViewController *)parent
{
if (![parent isEqual:self.parentViewController]) {
NSLog(@"Back pressed");
}
}
But it only works with iOS5+
My take is a combination of a couple of posted answers, with some modifications to make them easier to use from within a running python environment.
The idea is to provide a entirely new command (modeled after the install command) that gives you an instance of the package finder to use. The upside is that it works with, and uses, any indexes that pip supports and reads your local pip configuration files, so you get the correct results as you would with a normal pip install.
I've made an attempt at making it compatible with both pip v 9.x and 10.x.. but only tried it on 9.x
https://gist.github.com/kaos/68511bd013fcdebe766c981f50b473d4
#!/usr/bin/env python
# When you want a easy way to get at all (or the latest) version of a certain python package from a PyPi index.
import sys
import logging
try:
from pip._internal import cmdoptions, main
from pip._internal.commands import commands_dict
from pip._internal.basecommand import RequirementCommand
except ImportError:
from pip import cmdoptions, main
from pip.commands import commands_dict
from pip.basecommand import RequirementCommand
from pip._vendor.packaging.version import parse as parse_version
logger = logging.getLogger('pip')
class ListPkgVersionsCommand(RequirementCommand):
"""
List all available versions for a given package from:
- PyPI (and other indexes) using requirement specifiers.
- VCS project urls.
- Local project directories.
- Local or remote source archives.
"""
name = "list-pkg-versions"
usage = """
%prog [options] <requirement specifier> [package-index-options] ...
%prog [options] [-e] <vcs project url> ...
%prog [options] [-e] <local project path> ...
%prog [options] <archive url/path> ..."""
summary = 'List package versions.'
def __init__(self, *args, **kw):
super(ListPkgVersionsCommand, self).__init__(*args, **kw)
cmd_opts = self.cmd_opts
cmd_opts.add_option(cmdoptions.install_options())
cmd_opts.add_option(cmdoptions.global_options())
cmd_opts.add_option(cmdoptions.use_wheel())
cmd_opts.add_option(cmdoptions.no_use_wheel())
cmd_opts.add_option(cmdoptions.no_binary())
cmd_opts.add_option(cmdoptions.only_binary())
cmd_opts.add_option(cmdoptions.pre())
cmd_opts.add_option(cmdoptions.require_hashes())
index_opts = cmdoptions.make_option_group(
cmdoptions.index_group,
self.parser,
)
self.parser.insert_option_group(0, index_opts)
self.parser.insert_option_group(0, cmd_opts)
def run(self, options, args):
cmdoptions.resolve_wheel_no_use_binary(options)
cmdoptions.check_install_build_global(options)
with self._build_session(options) as session:
finder = self._build_package_finder(options, session)
# do what you please with the finder object here... ;)
for pkg in args:
logger.info(
'%s: %s', pkg,
', '.join(
sorted(
set(str(c.version) for c in finder.find_all_candidates(pkg)),
key=parse_version,
)
)
)
commands_dict[ListPkgVersionsCommand.name] = ListPkgVersionsCommand
if __name__ == '__main__':
sys.exit(main())
Example output
./list-pkg-versions.py list-pkg-versions pika django
pika: 0.5, 0.5.1, 0.5.2, 0.9.1a0, 0.9.2a0, 0.9.3, 0.9.4, 0.9.5, 0.9.6, 0.9.7, 0.9.8, 0.9.9, 0.9.10, 0.9.11, 0.9.12, 0.9.13, 0.9.14, 0.10.0b1, 0.10.0b2, 0.10.0, 0.11.0b1, 0.11.0, 0.11.1, 0.11.2, 0.12.0b2
django: 1.1.3, 1.1.4, 1.2, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.3, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.4, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.4.10, 1.4.11, 1.4.12, 1.4.13, 1.4.14, 1.4.15, 1.4.16, 1.4.17, 1.4.18, 1.4.19, 1.4.20, 1.4.21, 1.4.22, 1.5, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 1.5.7, 1.5.8, 1.5.9, 1.5.10, 1.5.11, 1.5.12, 1.6, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.6.8, 1.6.9, 1.6.10, 1.6.11, 1.7, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.7.9, 1.7.10, 1.7.11, 1.8a1, 1.8b1, 1.8b2, 1.8rc1, 1.8, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.8.8, 1.8.9, 1.8.10, 1.8.11, 1.8.12, 1.8.13, 1.8.14, 1.8.15, 1.8.16, 1.8.17, 1.8.18, 1.8.19, 1.9a1, 1.9b1, 1.9rc1, 1.9rc2, 1.9, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6, 1.9.7, 1.9.8, 1.9.9, 1.9.10, 1.9.11, 1.9.12, 1.9.13, 1.10a1, 1.10b1, 1.10rc1, 1.10, 1.10.1, 1.10.2, 1.10.3, 1.10.4, 1.10.5, 1.10.6, 1.10.7, 1.10.8, 1.11a1, 1.11b1, 1.11rc1, 1.11, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5, 1.11.6, 1.11.7, 1.11.8, 1.11.9, 1.11.10, 1.11.11, 1.11.12, 2.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4
Since I had a similar situation, I thought I'd share my situation and how these answers helped me (thanks everyone).
So I decided to work locally by amending my last commit every time I wanted to save my progress on the main branch (I know, I should've branched out, committed on that, kept pushing and later merge back to master).
One late night, in paranoid fear of loosing my progress to hardware failure or something out of the ether, I decided to push master to origin. Later I kept amending my local master branch and when I decided it's time to push again, I was faced with different master branches and found out I can't amend origin/upstream (duh!) like I can local development branches.
So I didn't checkout master locally because I already was after a commit. Master was unchanged. I didn't even need to reset --hard, my current commit was OK.
I just forced push to origin, without even specifying what commit I wanted to force on master since in this case it's whatever HEAD is at. Checked git diff master..origin/master
so there weren't any differences and that's it. All fixed. Thanks! (I know, I'm a git newbie, please forgive!).
So if you're already OK with your master branch locally, just:
git push --force origin master
git diff master..origin/master
CTRL+SHIFT+C in Eclipse + StatET and Rstudio.
I think not exactly a programming language, but exactly what its name says: a markup language. We cannot program using just pure, HTML. But just annotate how to present content.
But if you consider programming the act of tell the computer how to present contents, it is a programming language.
had the same error while using pytorch code which had deprecated pillow code. since PILLOW_VERSION was deprecated, i worked around it by:
Simply duplicating the _version file and renaming it as PILLOW_VERSION.py in the same folder.
worked for me
I have tried many codes and finally, this worked for me in Swift 3.0 Latest [March 2017]
The ViewController
class should be inherited the UITextFieldDelegate
for making this code working.
class ViewController: UIViewController,UITextFieldDelegate
Add the Text field with the Proper Tag number and this tag number is used to take the control to appropriate text field based on incremental tag number assigned to it.
override func viewDidLoad() {
userNameTextField.delegate = self
userNameTextField.tag = 0
userNameTextField.returnKeyType = UIReturnKeyType.next
passwordTextField.delegate = self
passwordTextField.tag = 1
passwordTextField.returnKeyType = UIReturnKeyType.go
}
In the above code, the returnKeyType = UIReturnKeyType.next
where will make the Key pad return key to display as Next
you also have other options as Join/Go
etc, based on your application change the values.
This textFieldShouldReturn
is a method of UITextFieldDelegate controlled and here we have next field selection based on the Tag value incrementation
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
if let nextField = textField.superview?.viewWithTag(textField.tag + 1) as? UITextField {
nextField.becomeFirstResponder()
} else {
textField.resignFirstResponder()
return true;
}
return false
}
Don't use rows.Count. That's asking for how many rows exist. If there are many, it will take some time to count them. All you really want to know is "is there at least one?" You don't care if there are 10 or 1000 or a billion. You just want to know if there is at least one. If I give you a box and ask you if there are any marbles in it, will you dump the box on the table and start counting? Of course not. Using LINQ, you might think that this would work:
bool hasRows = dataTable1.Rows.Any()
But unfortunately, DataRowCollection
does not implement IEnumerable
.
So instead, try this:
bool hasRows = dataTable1.Rows.GetEnumerator().MoveNext()
You will of course need to check if the dataTable1 is null first. if it's not, this will tell you if there are any rows without enumerating the whole lot.
You can use the magic methods __getattribute__
and __setattr__
.
class MyClass:
def __init__(self, attrvalue):
self.myattr = attrvalue
def __getattribute__(self, attr):
if attr == "myattr":
#Getter for myattr
def __setattr__(self, attr):
if attr == "myattr":
#Setter for myattr
Be aware that __getattr__
and __getattribute__
are not the same. __getattr__
is only invoked when the attribute is not found.
That is an HTTP header. You would configure your webserver or webapp to send this header ideally. Perhaps in htaccess or PHP.
Alternatively you might be able to use
<head>...<meta http-equiv="Access-Control-Allow-Origin" content="*">...</head>
I do not know if that would work. Not all HTTP headers can be configured directly in the HTML.
This works as an alternative to many HTTP headers, but see @EricLaw's comment below. This particular header is different.
Caveat
This answer is strictly about how to set headers. I do not know anything about allowing cross domain requests.
About HTTP Headers
Every request and response has headers. The browser sends this to the webserver
GET /index.htm HTTP/1.1
Then the headers
Host: www.example.com
User-Agent: (Browser/OS name and version information)
.. Additional headers indicating supported compression types and content types and other info
Then the server sends a response
Content-type: text/html
Content-length: (number of bytes in file (optional))
Date: (server clock)
Server: (Webserver name and version information)
Additional headers can be configured for example Cache-Control
, it all depends on your language (PHP, CGI, Java, htaccess) and webserver (Apache, etc).
suppose you need a label with text customername than you can achive it using 2 ways
[1]@Html.Label("CustomerName")
[2]@Html.LabelFor(a => a.CustomerName) //strongly typed
2nd method used a property from your model. If your view implements a model then you can use the 2nd method.
More info please visit below link
http://weblogs.asp.net/scottgu/archive/2010/01/10/asp-net-mvc-2-strongly-typed-html-helpers.aspx
Use import test1
for the 1st use - it will execute the script. For later invocations, treat the script as an imported module, and call the reload(test1)
method.
When
reload(module)
is executed:
- Python modules’ code is recompiled and the module-level code reexecuted, defining a new set of objects which are bound to names in the module’s dictionary. The init function of extension modules is not called
A simple check of sys.modules
can be used to invoke the appropriate action. To keep referring to the script name as a string ('test1'
), use the 'import()' builtin.
import sys
if sys.modules.has_key['test1']:
reload(sys.modules['test1'])
else:
__import__('test1')
There is nothing much to add to your code except appending the li tag to the ul
ul.appendChild(li)
and there you go just add this to your function and then it should work.
To get the number of rows in a dataframe use:
df.shape[0]
(and df.shape[1]
to get the number of columns).
As an alternative you can use
len(df)
or
len(df.index)
(and len(df.columns)
for the columns)
shape
is more versatile and more convenient than len()
, especially for interactive work (just needs to be added at the end), but len
is a bit faster (see also this answer).
To avoid: count()
because it returns the number of non-NA/null observations over requested axis
len(df.index)
is faster
import pandas as pd
import numpy as np
df = pd.DataFrame(np.arange(24).reshape(8, 3),columns=['A', 'B', 'C'])
df['A'][5]=np.nan
df
# Out:
# A B C
# 0 0 1 2
# 1 3 4 5
# 2 6 7 8
# 3 9 10 11
# 4 12 13 14
# 5 NaN 16 17
# 6 18 19 20
# 7 21 22 23
%timeit df.shape[0]
# 100000 loops, best of 3: 4.22 µs per loop
%timeit len(df)
# 100000 loops, best of 3: 2.26 µs per loop
%timeit len(df.index)
# 1000000 loops, best of 3: 1.46 µs per loop
df.__len__
is just a call to len(df.index)
import inspect
print(inspect.getsource(pd.DataFrame.__len__))
# Out:
# def __len__(self):
# """Returns length of info axis, but here we use the index """
# return len(self.index)
Why you should not use count()
df.count()
# Out:
# A 7
# B 8
# C 8
This answer currently only applies to using two Linux computers [or maybe works on Mac too?--untested on Mac] (syncing from one to the other) because I wrote this synchronization script in bash. It is simply a wrapper around git
, however, so feel free to take it and convert it into a cross-platform Python solution or something if you wish
This doesn't directly answer the OP's question, but it is so close I guarantee it will answer many other peoples' question who land on this page (mine included, actually, as I came here first before writing my own solution), so I'm posting it here anyway.
Let's call the first computer where I write the code "PC1" (Personal Computer 1), and the 2nd computer where I build the code "PC2". I need a tool to easily synchronize from PC1 to PC2. I tried rsync
, but it was insanely slow for large repos and took tons of bandwidth and data.
So, how do I do it? What workflow should I use? If you have this question too, here's the workflow that I decided upon. I wrote a bash script to automate the process by using git
to automatically push changes from PC1 to PC2 via a remote repository, such as github. So far it works very well and I'm very pleased with it. It is far far far faster than rsync
, more trustworthy in my opinion because each PC maintains a functional git repo, and uses far less bandwidth to do the whole sync, so it's easily doable over a cell phone hot spot without using tons of your data.
Install the script on PC1 (this solution assumes ~/bin is in your $PATH):
git clone https://github.com/ElectricRCAircraftGuy/eRCaGuy_dotfiles.git
cd eRCaGuy_dotfiles/useful_scripts
mkdir -p ~/bin
ln -s "${PWD}/sync_git_repo_from_pc1_to_pc2.sh" ~/bin/sync_git_repo_from_pc1_to_pc2
cd ..
cp -i .sync_git_repo ~/.sync_git_repo
Now edit the "~/.sync_git_repo" file you just copied above, and update its parameters to fit your case. Here are the parameters it contains:
# The git repo root directory on PC2 where you are syncing your files TO; this dir must *already exist*
# and you must have *already `git clone`d* a copy of your git repo into it!
# - Do NOT use variables such as `$HOME`. Be explicit instead. This is because the variable expansion will
# happen on the local machine when what we need is the variable expansion from the remote machine. Being
# explicit instead just avoids this problem.
PC2_GIT_REPO_TARGET_DIR="/home/gabriel/dev/eRCaGuy_dotfiles" # explicitly type this out; don't use variables
PC2_SSH_USERNAME="my_username" # explicitly type this out; don't use variables
PC2_SSH_HOST="my_hostname" # explicitly type this out; don't use variables
Git clone your repo you want to sync on both PC1 and PC2.
Now cd
into any directory within the git repo on PC1, and run:
sync_git_repo_from_pc1_to_pc2
That's it! About 30 seconds later everything will be magically synced from PC1 to PC2, and it will be printing output the whole time to tell you what it's doing and where it's doing it on your disk and on which computer. It's safe too, because it doesn't overwrite or delete anything that is uncommitted. It backs it up first instead! Read more below for how that works.
rsync
s a copy of the script over to PC2, and does an ssh
call to tell PC2 to run the script with a special option to just do PC2 stuff.cd
s into the repo, and checks to see if any local uncommitted changes exist. If so, it creates a new backup branch forked off of the current branch (sample name: my_branch_SYNC_BAK_20200220-0028hrs-15sec
<-- notice that's YYYYMMDD-HHMMhrs--SSsec), and commits any uncommitted changes to that branch with a commit message such as DO BACKUP OF ALL UNCOMMITTED CHANGES ON PC2 (TARGET PC/BUILD MACHINE). Now, it checks out the SYNC branch, pulling it from the remote repository if it is not already on the local machine. Then, it fetches the latest changes on the remote repository, and does a hard reset to force the local SYNC repository to match the remote SYNC repository. You might call this a "hard pull". It is safe, however, because we already backed up any uncommitted changes we had locally on PC2, so nothing is lost! use DateTime qw();
DateTime->now->strftime('%m/%d/%Y')
expression returns 06/13/2012
Simply speaking, closure is a trick about scope, lambda is an anonymous function. We can realize closure with lambda more elegantly and lambda is often used as a parameter passed to a higher function
Internet explorer has a reset to factory button and luckily so does chrome! try the link below and let us know. the other option is to stop chrome and delete the c:\users\%username%\appdata\local\google folder entirely then reinstall chrome but this will loose all you local settings and data.
Google doc on how to factory reset: https://support.google.com/chrome/answer/3296214?hl=en
Read MSDN.
it also contains a link to the args.
short answer: no, the main does not get override. when visual studio (actually the compiler) builds your exe it must declare a starting point for the assmebly, that point is the main function.
if you meant how to literary pass args then you can either run you're app from the command line with them (e.g. appname.exe param1 param2) or in the project setup, enter them (in the command line arguments in the Debug tab)
in the main you will need to read those args for example:
for (int i = 0; i < args.Length; i++)
{
string flag = args.GetValue(i).ToString();
if (flag == "bla")
{
Bla();
}
}
if you delete something from list , u can use this way : (method sub is case sensitive)
new_list = []
old_list= ["ABCDEFG","HKLMNOP","QRSTUV"]
for data in old_list:
new_list.append(re.sub("AB|M|TV", " ", data))
print(new_list) // output : [' CDEFG', 'HKL NOP', 'QRSTUV']
It depends. If you want to distinguish between no parameter passed in at all, and an empty string passed in, you could use None.
Check if the Node
is a Dom Element
, cast, and call getElementsByTagName()
Node doc = docs.item(i);
if(doc instanceof Element) {
Element docElement = (Element)doc;
...
cell = doc.getElementsByTagName("aoo").item(0);
}
Login to the server. grep "username" /etc/passwd This will display the user details if present.
EDIT: Sorry, I should have remembered that this machine is decidedly non-standard, having plugged in various non-standard libc
implementations for academic purposes ;-)
As itoa()
is indeed non-standard, as mentioned by several helpful commenters, it is best to use sprintf(target_string,"%d",source_int)
or (better yet, because it's safe from buffer overflows) snprintf(target_string, size_of_target_string_in_bytes, "%d", source_int)
. I know it's not quite as concise or cool as itoa()
, but at least you can Write Once, Run Everywhere (tm) ;-)
You are correct in stating that the default gcc libc
does not include itoa()
, like several other platforms, due to it not technically being a part of the standard. See here for a little more info. Note that you have to
#include <stdlib.h>
Of course you already know this, because you wanted to use itoa()
on Linux after presumably using it on another platform, but... the code (stolen from the link above) would look like:
Example
/* itoa example */
#include <stdio.h>
#include <stdlib.h>
int main ()
{
int i;
char buffer [33];
printf ("Enter a number: ");
scanf ("%d",&i);
itoa (i,buffer,10);
printf ("decimal: %s\n",buffer);
itoa (i,buffer,16);
printf ("hexadecimal: %s\n",buffer);
itoa (i,buffer,2);
printf ("binary: %s\n",buffer);
return 0;
}
Output:
Enter a number: 1750 decimal: 1750 hexadecimal: 6d6 binary: 11011010110
Hope this helps!
JLabel is actually capable of displaying some rudimentary HTML, which is why it is not responding to your use of the newline character (unlike, say, System.out).
If you put in the corresponding HTML and used <BR>
, you would get your newlines.
If we have parameter like below in our POM XML
<version>${project.version}.${svn.version}</version>
<packaging>war</packaging>
I run maven command line as follows :
mvn clean install package -Dproject.version=10 -Dsvn.version=1
In this case, using WebView#loadDataWithBaseUrl()
is better than WebView#loadUrl()
!
webView.loadDataWithBaseURL(url,
data,
"text/html",
"utf-8",
null);
url: url/path String pointing to the directory all your JavaScript files and html links have their origin. If null, it's about:blank. data: String containing your hmtl file, read with BufferedReader for example
This is more likely an issue at your server side. you request style sheet page "Styles/Site.css" from the server of type "text/css", but your server might be responding to this request with "test/html". I had this issue when my server was running in python and it was replying to requested css files with header text/html (as that of my index.html file). I re-arranged my server code and assigned the correct headers to its corresponding pages and my issue got resolved.
When you normalize a matrix using NORM_L1, you are dividing every pixel value by the sum of absolute values of all the pixels in the image. As a result, all pixel values become much less than 1 and you get a black image. Try NORM_MINMAX instead of NORM_L1.
In C99 the length modifier for long double
seems to be L
and not l
. man fprintf
(or equivalent for windows) should tell you for your particular platform.
This error can also appear when python versions are mixed:
For example if any of the DLL to be loaded has been compiled using python 2.7.16 and you try to import with python 2.7.15 this error ImportError: DLL load failed: %1 is not a valid Win32 application.
is thrown.
This is at least what I've found to be the problem in my case.
Expanding on the answers provided here.
You can just do set idx = 1
to set a variable, but that syntax is not recommended because the variable name may clash with a set sub-command. As an example set w=1
would not be valid.
This means that you should prefer the syntax: set variable idx = 1
or set var idx = 1
.
Last but not least, you can just use your trusty old print command, since it evaluates an expression. The only difference being that he also prints the result of the expression.
(gdb) p idx = 1
$1 = 1
You can read more about gdb here.
Use chardet https://github.com/chardet/chardet (documentation is short and easy to read).
Install python, then pip install chardet, at last use the command line command.
I tested under GB2312 and it's pretty accurate. (Make sure you have at least a few characters, sample with only 1 character may fail easily).
file
is not reliable as you can see.
If you are invoking foobarfunc
with resolution scope operator (::
), then you are calling it statically, e.g. on the class level instead of the instance level, thus you are using $this
when not in object context. $this
does not exist in class context.
If you enable E_STRICT
, PHP will raise a Notice about this:
Strict Standards:
Non-static method foobar::foobarfunc() should not be called statically
Do this instead
$fb = new foobar;
echo $fb->foobarfunc();
On a sidenote, I suggest not to use global
inside your classes. If you need something from outside inside your class, pass it through the constructor. This is called Dependency Injection and it will make your code much more maintainable and less dependant on outside things.
A unique approach I haven't seen anyone mention!
The only way I was able to get all the customisation I wanted was to use an after_validation
callback to allow me to manipulate the error message.
Allow the validation message to be created as normal, you don't need to try and change it in the validation helper.
create an after_validation
callback that will replace that validation message in the back-end before it gets to the view.
In the after_validation
method you can do anything you want with the validation message, just like a normal string! You can even use dynamic values and insert them into the validation message.
#this could be any validation
validates_presence_of :song_rep_xyz, :message => "whatever you want - who cares - we will replace you later"
after_validation :replace_validation_message
def replace_validation_message
custom_value = #any value you would like
errors.messages[:name_of_the_attribute] = ["^This is the replacement message where
you can now add your own dynamic values!!! #{custom_value}"]
end
The after_validation method will have far greater scope than the built in rails validation helper, so you will be able to access the object you are validating like you are trying to do with object.file_name. Which does not work in the validation helper where you are trying to call it.
Note: we use the ^
to get rid of the attribute name at the beginning of the validation as @Rystraum pointed out referencing this gem
I encountered this once my system crashed. What I did is this:
(Please note your corrupt commits are lost, but changes are retained. You might have to recreate those commits at the end of this procedure)
.git
folder..git
folder in it.Please refer to the official documentation:
https://www.chartjs.org/docs/latest/axes/styling.html#grid-line-configuration
Below code changes would hide the gridLines:
gridLines: {
display:false
}
I know it's too late but I'd like to add this update:
I'm using the Conventional Model Metadata Provider which presented by Phil Haacked it's more powerful and easy to apply take look at it : ConventionalModelMetadataProvider
Here if you wanna support many types of resources:
public class LocalizedDisplayNameAttribute : DisplayNameAttribute
{
private readonly PropertyInfo nameProperty;
public LocalizedDisplayNameAttribute(string displayNameKey, Type resourceType = null)
: base(displayNameKey)
{
if (resourceType != null)
{
nameProperty = resourceType.GetProperty(base.DisplayName,
BindingFlags.Static | BindingFlags.Public);
}
}
public override string DisplayName
{
get
{
if (nameProperty == null)
{
return base.DisplayName;
}
return (string)nameProperty.GetValue(nameProperty.DeclaringType, null);
}
}
}
Then use it like this:
[LocalizedDisplayName("Password", typeof(Res.Model.Shared.ModelProperties))]
public string Password { get; set; }
For the full localization tutorial see this page.
try this:
select convert(varchar, dob2, 101)
select convert(varchar, dob2, 102)
select convert(varchar, dob2, 103)
select convert(varchar, dob2, 104)
select convert(varchar, dob2, 105)
select convert(varchar, dob2, 106)
select convert(varchar, dob2, 107)
select convert(varchar, dob2, 108)
select convert(varchar, dob2, 109)
select convert(varchar, dob2, 110)
select convert(varchar, dob2, 111)
select convert(varchar, dob2, 112)
select convert(varchar, dob2, 113)
refernces: http://msdn.microsoft.com/en-us/library/ms187928.aspx
Already answered quite well by others. This one from my end :)
Evidently, pop
is the only one which returns the value, and remove
is the only one which searches the object, while del
limits itself to a simple deletion.
As Kris mentions, you can use the $resource
service to interact with the server, but I get the impression you are beginning your journey with Angular - I was there last week - so I recommend to start experimenting directly with the $http
service. In this case you can call its get
method.
If you have the following JSON
[{ "text":"learn angular", "done":true },
{ "text":"build an angular app", "done":false},
{ "text":"something", "done":false },
{ "text":"another todo", "done":true }]
You can load it like this
var App = angular.module('App', []);
App.controller('TodoCtrl', function($scope, $http) {
$http.get('todos.json')
.then(function(res){
$scope.todos = res.data;
});
});
The get
method returns a promise object which
first argument is a success callback and the second an error
callback.
When you add $http
as a parameter of a function Angular does it magic
and injects the $http
resource into your controller.
I've put some examples here
Your code concatenates three strings, then converts the result to a number.
You need to convert each variable to a number by calling parseFloat()
around each one.
total = parseFloat(myInt1) + parseFloat(myInt2) + parseFloat(myInt3);
Above answers are in python2. So for python 3 users I am giving this answer. You can use the bellow code:
import pandas as pd
fields = ['star_name', 'ra']
df = pd.read_csv('data.csv', skipinitialspace=True, usecols=fields)
# See the keys
print(df.keys())
# See content in 'star_name'
print(df.star_name)
I think it's better to divide my answer to 2 parts:
A-Create everything from scratch (using SVG, JavaScript, and HTML5):
<polygon points="200,10 250,190 160,210" style="fill:lime;stroke:purple;stroke-width:1"
onmouseover="mouseOverHandler(evt)"
onclick="clickHandler(evt)" />
function mouseOverHandler(evt) {};
function clickHandler(evt) {};
B-Use a software like FLDraw Interactive Image Creator (only if you have a map image and want to make it interactive):
Option (A) is very good if you are programmer or you have someone to create the required code and SVG file for you, Option (B) is good if you don't want to hire someone or spend your own time for creating everything from scratch
You have some other options too, for example using HTML5 Canvas instead of SVG, but it's not very easy to create a Zoomable map using HTML5 Canvas, maybe there are some other ways too that I'm not aware of.
I know this is old, but I figured I'd give my input. I had to do this for a project at work and this was my solution.
I have a Building object that includes the Timezone using the TimeZone class and wanted to create zoneId and offset fields in a new class.
So what I did was create:
private String timeZoneId;
private String timeZoneOffset;
Then in the constructor I passed in the Building object and set these fields like so:
this.timeZoneId = building.getTimeZone().getID();
this.timeZoneOffset = building.getTimeZone().toZoneId().getId();
So timeZoneId might equal something like "EST" And timeZoneOffset might equal something like "-05:00"
I would like to not that you might not
SELECT t.name AS 'table', i.name AS 'index', it.xtype,
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 1
AND k.id = t.id)
AS 'column1',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 2
AND k.id = t.id)
AS 'column2',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 3
AND k.id = t.id)
AS 'column3',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 4
AND k.id = t.id)
AS 'column4',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 5
AND k.id = t.id)
AS 'column5',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 6
AND k.id = t.id)
AS 'column6',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 7
AND k.id = t.id)
AS 'column7',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 8
AND k.id = t.id)
AS 'column8',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 9
AND k.id = t.id)
AS 'column9',
(SELECT c.name FROM syscolumns c INNER JOIN sysindexkeys k
ON k.indid = i.indid
AND c.colid = k.colid
AND c.id = t.id
AND k.keyno = 10
AND k.id = t.id)
AS 'column10',
FROM sysobjects t
INNER JOIN sysindexes i ON i.id = t.id
INNER JOIN sysobjects it ON it.parent_obj = t.id AND it.name = i.name
WHERE it.xtype = 'PK'
ORDER BY t.name, i.name
cat
can be the easy solution but that become very slow when we concat large files, find -print
is to rescue you, though you have to use cat once.
amey@xps ~/work/python/tmp $ ls -lhtr
total 969M
-rw-r--r-- 1 amey amey 485M May 24 23:54 bigFile2.txt
-rw-r--r-- 1 amey amey 485M May 24 23:55 bigFile1.txt
amey@xps ~/work/python/tmp $ time cat bigFile1.txt bigFile2.txt >> out.txt
real 0m3.084s
user 0m0.012s
sys 0m2.308s
amey@xps ~/work/python/tmp $ time find . -maxdepth 1 -type f -name 'bigFile*' -print0 | xargs -0 cat -- > outFile1
real 0m2.516s
user 0m0.028s
sys 0m2.204s
While Fosco's answer is not wrong there is a case to be considered with this one: mixed arrays. Imagine I have an array like this:
$a = array(
"nice",
"car" => "fast",
"none"
);
Now, PHP allows this kind of syntax but it has one problem: if I run Fosco's code I get 0
which is wrong for me, but why this happens?
Because when doing comparisons between strings and integers PHP converts strings to integers (and this is kinda stupid in my opinion), so when array_search()
searches for the index it stops at the first one because apparently ("car" == 0)
is true.
Setting array_search()
to strict mode won't solve the problem because then array_search("0", array_keys($a))
would return false even if an element with index 0 exists.
So my solution just converts all indexes from array_keys()
to strings and then compares them correctly:
echo array_search("car", array_map("strval", array_keys($a)));
Prints 1
, which is correct.
EDIT:
As Shaun pointed out in the comment below, the same thing applies to the index value, if you happen to search for an int index like this:
$a = array(
"foo" => "bar",
"nice",
"car" => "fast",
"none"
);
$ind = 0;
echo array_search($ind, array_map("strval", array_keys($a)));
You will always get 0
, which is wrong, so the solution would be to cast the index (if you use a variable) to a string like this:
$ind = 0;
echo array_search((string)$ind, array_map("strval", array_keys($a)));
One way is to use the version of parse that takes an InputSource rather than a file
A SAX InputSource can be constructed from a Reader object. One Reader object is the StringReader
So something like
parse(new InputSource(new StringReader(myString))) may work.
The no-op command in shell is :
(colon).
if [ "$a" -ge 10 ]
then
:
elif [ "$a" -le 5 ]
then
echo "1"
else
echo "2"
fi
From the bash manual:
:
(a colon)
Do nothing beyond expanding arguments and performing redirections. The return status is zero.
This might help someone so I'll put my inputs here as well.
I've encountered the same (or similar) problem. Apparently, the problem was the POST request was blocked by Modsec by the following rules: 350147, 340147, 340148, 350148
After blocking the request, I was redirected to the same endpoint but as a GET request of course and thus the 405.
I whitelisted those rules and voila, the 405 error was gone.
Hope this helps someone.
since your local username on your laptop frequently does not match the server's username, you can set this in the ~/.subversion/servers file
Add the server to the [groups] section with a name, then add a section with that name and provide a username.
for example, for a login like [email protected]
this is what your config would look like:
[groups]
exampleserver = svn.example.com
[exampleserver]
username = me
-H/--header <header>
(HTTP) Extra header to use when getting a web page. You may specify
any number of extra headers. Note that if you should add a custom
header that has the same name as one of the internal ones curl would
use, your externally set header will be used instead of the internal
one. This allows you to make even trickier stuff than curl would
normally do. You should not replace internally set headers without
knowing perfectly well what you're doing. Remove an internal header
by giving a replacement without content on the right side of the
colon, as in: -H "Host:".
curl will make sure that each header you add/replace get sent with
the proper end of line marker, you should thus not add that as a
part of the header content: do not add newlines or carriage returns
they will only mess things up for you.
See also the -A/--user-agent and -e/--referer options.
This option can be used multiple times to add/replace/remove multi-
ple headers.
curl --header "X-MyHeader: 123" www.google.com
You can see the request that curl sent by adding the -v
option.
// use `/ 1048576` to get ram in MB
// and `/ (1048576 * 1024)` or `/ 1048576 / 1024` to get ram in GB
private static String getRAMsize()
{
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject item in moc)
{
return Convert.ToString(Math.Round(Convert.ToDouble(item.Properties["TotalPhysicalMemory"].Value) / 1048576, 0)) + " MB";
}
return "RAMsize";
}
I tried as you mentioned, but only first parameter is going through and rest all are appearing in the server as undefined
. I am passing JSONWebToken
as part of header.
.ajax({
url: 'api/outletadd',
type: 'post',
data: { outletname:outletname , addressA:addressA , addressB:addressB, city:city , postcode:postcode , state:state , country:country , menuid:menuid },
headers: {
authorization: storedJWT
},
dataType: 'json',
success: function (data){
alert("Outlet Created");
},
error: function (data){
alert("Outlet Creation Failed, please try again.");
}
});
See my answer here: Run only one task and handler from ansible playbook
It is possible to run separate role (from roles/
dir):
ansible -i stage.yml -m include_role -a name=create-os-user localhost
and separate task file:
ansible -i stage.yml -m include_tasks -a file=tasks/create-os-user.yml localhost
If you externalize tasks from role to root tasks/
directory (reuse is achieved by import_tasks: ../../../tasks/create-os-user.yml
) you can run it independently from playbook/role.
Here is an example straight from PHP.net
$a = array(
"one" => 1,
"two" => 2,
"three" => 3,
"seventeen" => 17
);
foreach ($a as $k => $v) {
echo "\$a[$k] => $v.\n";
}
in the foreach you can do a comparison of each key to something that you are looking for
Converting Integer to Long Very Simple and many ways to converting that
Example 1
new Long(your_integer);
Example 2
Long.valueOf(your_integer);
Example 3
Long a = 12345L;
Example 4
If you already have the int typed as an Integer you can do this:
Integer y = 12;
long x = y.longValue();
Actually, your last example:
<div data-foobar='{"foo":"bar"}'></div>
seems to be working well (see http://jsfiddle.net/GlauberRocha/Q6kKU/).
The nice thing is that the string in the data- attribute is automatically converted to a JavaScript object. I don't see any drawback in this approach, on the contrary! One attribute is sufficient to store a whole set of data, ready to use in JavaScript through object properties.
(Note: for the data- attributes to be automatically given the type Object rather than String, you must be careful to write valid JSON, in particular to enclose the key names in double quotes).
adjustResize = resize the page content
adjustPan = move page content without resizing page content
On Android >=6.0, We have to request permission runtime.
Step1: add in AndroidManifest.xml file
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
Step2: Request permission.
int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE);
if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, REQUEST_READ_PHONE_STATE);
} else {
//TODO
}
Step3: Handle callback when you request permission.
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case REQUEST_READ_PHONE_STATE:
if ((grantResults.length > 0) && (grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
//TODO
}
break;
default:
break;
}
}
Edit: Read official guide here Requesting Permissions at Run Time
<iframe title='YouTube video player' class='youtube-player' type='text/html'
width='030' height='030'
src='http://www.youtube.com/embed/ZFo8b9DbcMM?rel=0&border=&autoplay=1'
type='application/x-shockwave-flash'
allowscriptaccess='always' allowfullscreen='true'
frameborder='0'></iframe>
just insert your code after embed/
The guy who solved this posted it as LGPL and you're not allowed to modify it. I didn't even click on it when I saw that. Here's my version. This needs to be tested. There are probably bugs. Please post any updates. No warranty. You can modify this all you want, call it your own, print it out on a piece of paper and use it for kennel scrap, ... don't care.
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Net;
using System.Text;
using System.Web;
namespace DigitalBoundaryGroup
{
class HttpNameValueCollection
{
public class File
{
private string _fileName;
public string FileName { get { return _fileName ?? (_fileName = ""); } set { _fileName = value; } }
private string _fileData;
public string FileData { get { return _fileData ?? (_fileName = ""); } set { _fileData = value; } }
private string _contentType;
public string ContentType { get { return _contentType ?? (_contentType = ""); } set { _contentType = value; } }
}
private NameValueCollection _post;
private Dictionary<string, File> _files;
private readonly HttpListenerContext _ctx;
public NameValueCollection Post { get { return _post ?? (_post = new NameValueCollection()); } set { _post = value; } }
public NameValueCollection Get { get { return _ctx.Request.QueryString; } }
public Dictionary<string, File> Files { get { return _files ?? (_files = new Dictionary<string, File>()); } set { _files = value; } }
private void PopulatePostMultiPart(string post_string)
{
var boundary_index = _ctx.Request.ContentType.IndexOf("boundary=") + 9;
var boundary = _ctx.Request.ContentType.Substring(boundary_index, _ctx.Request.ContentType.Length - boundary_index);
var upper_bound = post_string.Length - 4;
if (post_string.Substring(2, boundary.Length) != boundary)
throw (new InvalidDataException());
var current_string = new StringBuilder();
for (var x = 4 + boundary.Length; x < upper_bound; ++x)
{
if (post_string.Substring(x, boundary.Length) == boundary)
{
x += boundary.Length + 1;
var post_variable_string = current_string.Remove(current_string.Length - 4, 4).ToString();
var end_of_header = post_variable_string.IndexOf("\r\n\r\n");
if (end_of_header == -1) throw (new InvalidDataException());
var filename_index = post_variable_string.IndexOf("filename=\"", 0, end_of_header);
var filename_starts = filename_index + 10;
var content_type_starts = post_variable_string.IndexOf("Content-Type: ", 0, end_of_header) + 14;
var name_starts = post_variable_string.IndexOf("name=\"") + 6;
var data_starts = end_of_header + 4;
if (filename_index != -1)
{
var filename = post_variable_string.Substring(filename_starts, post_variable_string.IndexOf("\"", filename_starts) - filename_starts);
var content_type = post_variable_string.Substring(content_type_starts, post_variable_string.IndexOf("\r\n", content_type_starts) - content_type_starts);
var file_data = post_variable_string.Substring(data_starts, post_variable_string.Length - data_starts);
var name = post_variable_string.Substring(name_starts, post_variable_string.IndexOf("\"", name_starts) - name_starts);
Files.Add(name, new File() { FileName = filename, ContentType = content_type, FileData = file_data });
}
else
{
var name = post_variable_string.Substring(name_starts, post_variable_string.IndexOf("\"", name_starts) - name_starts);
var value = post_variable_string.Substring(data_starts, post_variable_string.Length - data_starts);
Post.Add(name, value);
}
current_string.Clear();
continue;
}
current_string.Append(post_string[x]);
}
}
private void PopulatePost()
{
if (_ctx.Request.HttpMethod != "POST" || _ctx.Request.ContentType == null) return;
var post_string = new StreamReader(_ctx.Request.InputStream, _ctx.Request.ContentEncoding).ReadToEnd();
if (_ctx.Request.ContentType.StartsWith("multipart/form-data"))
PopulatePostMultiPart(post_string);
else
Post = HttpUtility.ParseQueryString(post_string);
}
public HttpNameValueCollection(ref HttpListenerContext ctx)
{
_ctx = ctx;
PopulatePost();
}
}
}
You can also do the following
string filename = Path.ChangeExtension(Path.GetTempFileName(), ".csv");
and this also works as expected
string filename = Path.ChangeExtension(Path.GetTempPath() + Guid.NewGuid().ToString(), ".csv");
I realized that I wasn't passing $objPage into page_properties(). It works fine now.
for root, dirs, files in os.walk(directory):
for file in files:
floc = file
im = Image.open(str(directory) + '\\' + floc)
pix = np.array(im.getdata())
pixels.append(pix)
labels.append(1) # append(i)???
So far ok. But you want to leave pixels
as a list until you are done with the iteration.
pixels = np.array(pixels)
labels = np.array(labels)
You had this indention right in your other question. What happened? previous
Iterating, collecting values in a list, and then at the end joining things into a bigger array is the right way. To make things clear I often prefer to use notation like:
alist = []
for ..
alist.append(...)
arr = np.array(alist)
If names indicate something about the nature of the object I'm less likely to get errors like yours.
I don't understand what you are trying to do with traindata
. I doubt if you need to build it during the loop. pixels
and labels
have the basic information.
That
traindata = np.array([traindata[i][i],traindata[1]], dtype=object)
comes from the previous question. I'm not sure you understand that answer.
traindata = []
traindata.append(pixels)
traindata.append(labels)
if done outside the loop is just
traindata = [pixels, labels]
labels
is a 1d array, a bunch of 1s (or [0,1,2,3...] if my guess is right). pixels
is a higher dimension array. What is its shape?
Stop right there. There's no point in turning that list into an array. You can save the list with pickle
.
You are copying code from an earlier question, and getting the formatting wrong. cPickle very large amount of data
If you get this text in an alert:
function(){return JSON.encode(this);}
when you try alert(myArray[i]), then there are a few possibilities:
The simplest way to tell would be to check typeof(myArray[i]).
To switch to another branch, discarding all uncommitted changes (e.g. resulting from Git's strange handling of line endings):
git checkout -f <branchname>
I had a working copy with hundreds of changed files (but empty git diff --ignore-space-at-eol
) which I couldn't get rid off with any of the commands I read here, and git checkout <branchname>
won't work, either - unless given the -f
(or --force
) option.
Try this:
a[id*='Some:Same'][id$='name']
This will get you all a
elements with id containing
Some:Same
and have the id ending in
name
Write to a file test.txt:
String filepath ="/mnt/sdcard/test.txt";
FileOutputStream fos = null;
try {
fos = new FileOutputStream(filepath);
byte[] buffer = "This will be writtent in test.txt".getBytes();
fos.write(buffer, 0, buffer.length);
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(fos != null)
fos.close();
}
Read from file test.txt:
String filepath ="/mnt/sdcard/test.txt";
FileInputStream fis = null;
try {
fis = new FileInputStream(filepath);
int length = (int) new File(filepath).length();
byte[] buffer = new byte[length];
fis.read(buffer, 0, length);
fis.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if(fis != null)
fis.close();
}
Note: don't forget to add these two permission in AndroidManifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
You have your storyboard set up to expect an outlet called tableView
but the actual outlet name is myTableView
.
If you delete the connection in the storyboard and reconnect to the right variable name, it should fix the problem.
Sessions are stored on the server and are set from server side code, not client side code such as JavaScript.
What you want is a cookie, someone's given a brilliant explanation in this Stack Overflow question here: How do I set/unset cookie with jQuery?
You could potentially use sessions and set/retrieve them with jQuery and AJAX, but it's complete overkill if Cookies will do the trick.
This issue seems to like the following.
How to resolve repository certificate error in Gradle build
Below steps may help:
1. Add certificate to keystore-
Import some certifications into Android Studio JDK cacerts from Android Studio’s cacerts.
Android Studio’s cacerts may be located in
{your-home-directory}/.AndroidStudio3.0/system/tasks/cacerts
I used the following import command.
$ keytool -importkeystore -v -srckeystore {src cacerts} -destkeystore {dest cacerts}
2. Add modified cacert path to gradle.properties-
systemProp.javax.net.ssl.trustStore={your-android-studio-directory}\\jre\\jre\\lib\\security\\cacerts
systemProp.javax.net.ssl.trustStorePassword=changeit
It's a solution for Ubuntu (the idea also works for Windows or Mac) I just tried today and it works like a charm.
Material
Prerequisites on your ubuntu
Install network-manager
$sudo apt-get install network-manager
Install nmap
$sudo apt-get install nmap
Edit Wired connection on your laptop (Ubuntu)
Share WiFi connection of your laptop via Ethernet crossover cable
Hook up your RPi with your laptop using the Ethernet cable
Look up the broadcast address of the Ethernet connection (Laptop),
$/sbin/ifconfig eth1 | grep "Bcast" | awk -F: '{print $3}' | awk '{print $1}'
10.42.0.255
Use this address to find out the IP address of your RPi, it's 10.42.0.96 in my case because 10.42.0.1 is my laptop
$nmap -n -sP 10.42.0.255/24
Starting Nmap 6.40 ( http://nmap.org ) at 2016-02-20 23:07 CET Nmap scan report for 10.42.0.1 Host is up (0.00031s latency). Nmap scan report for 10.42.0.96 Host is up (0.0023s latency). Nmap done: 256 IP addresses (2 hosts up) scanned in 2.71 seconds
Login to your RPi from your laptop (-Y with X-forwarding)
$ssh -Y [email protected]
Lo and behold! Now your RPi is connected to your laptop and RPi can share the WiFi connection.
pi@raspberrypi ~ $
Share display & keyboard of your laptop with RPi
Install vncserver on Raspberry Pi
$ sudo apt-get update
$ sudo apt-get install tightvncserver
Install vncviewer on your laptop by downloading RealVNC (it supports multiple platforms) http://www.realvnc.com/download/vnc/
To be able to copy & paste from VNC server <--> VNC viewer, you need to install autocutsel on your RPi.
$sudo apt-get install autocutsel
If this site doesn't work, try to download the .deb directly from a mirror site, e.g.
mirror.hmc.edu/debian/pool/main/a/autocutsel/autocutsel_0.10.0-1_armhf.deb
and install it
$sudo dpkg -i autocutsel_0.10.0-1_armhf.deb
Start vncserver on your RPi (You have to restart vncserver after installing autocutsel, you can issue $vncserver -kill :1
)
$vncserver :1
Add autocutsel -fork to /home/pi/.vnc/xstartup
#!/bin/sh xrdb $HOME/.Xresources xsetroot -solid grey autocutsel -fork #x-terminal-emulator -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & #x-window-manager & # Fix to make GNOME work export XKL_XMODMAP_DISABLE=1 /etc/X11/Xsession
Start vncviewer on your laptop
$vncviewer
A vncviewer window will pop up and type in the IP address of your RPi (given by your laptop) followed by port 1, which is your VNC server. for example: 10.42.0.96:1 in my case.
Connect it to the vncserver hosted on your RPi by typing in a password (set up a password yourself)
12.Now you can see the desktop of RPi on your laptop, and I opened my browser to show the shared WiFi connection is working as well.
ALL OF YOU PLEASE LOOT AT IT I Am amazed it need little IQ just get length by arr[0].length and problem solved
for (int i = 0; i < test.length; i++) {
for (int j = 0; j < test[0].length; j++) {
System.out.print(test[i][j]);
}
System.out.println();
}
another solution will be to grab the text inside the title
tag & then use .html()
method of jQuery to construct the content of the tooltip.
$(function() {
$(document).tooltip({
position: {
using: function(position, feedback) {
$(this).css(position);
var txt = $(this).text();
$(this).html(txt);
$("<div>")
.addClass("arrow")
.addClass(feedback.vertical)
.addClass(feedback.horizontal)
.appendTo(this);
}
}
});
});
When you specify -jar
then the -cp
parameter will be ignored.
From the documentation:
When you use this option, the JAR file is the source of all user classes, and other user class path settings are ignored.
You also cannot "include" needed jar files into another jar file (you would need to extract their contents and put the .class files into your jar file)
You have two options:
lib
directory into the manifest (you can use relative paths there)-cp
: java -cp MyJar.jar:lib/* com.somepackage.subpackage.Main
Another option is to check if it's busy with a timer:
Set the timer as disabled by default. Then whenever navigating, enable it. i.e.:
WebBrowser1.Navigate("https://www.somesite.com")
tmrBusy.Enabled = True
And the timer:
Private Sub tmrBusy_Tick(sender As Object, e As EventArgs) Handles tmrBusy.Tick
If WebBrowser1.IsBusy = True Then
Debug.WriteLine("WB Busy ...")
Else
Debug.WriteLine("WB Done.")
tmrBusy.Enabled = False
End If
End Sub
return or return false are not the same as continue. If the loop is inside a function the remainder of the function will not execute as you would expect with a true "continue".
If you also want to keep "?" and just remove everything after that particular character, you can do:
var str = "/Controller/Action?id=11112&value=4444",
stripped = str.substring(0, str.indexOf('?') + '?'.length);
// output: /Controller/Action?
Above shown methods did not work for me, may be i am using bit old jquery, then finally the below shown code snippet works for - posting just in case somebody in my same position
$('#textBox').live('keydown', function(e) {
if (e.keyCode == 9) {
e.preventDefault();
alert('tab');
}
});
you have to check your linked project, in the new version of RN, don't need to link if you linked it cause a problem, I Fixed the problem by unlinked manually the dependency that I linked and re-run.
You just can put your query as a subquery:
SELECT avg(count)
FROM
(
SELECT COUNT (*) AS Count
FROM Table T
WHERE T.Update_time =
(SELECT MAX (B.Update_time )
FROM Table B
WHERE (B.Id = T.Id))
GROUP BY T.Grouping
) as counts
Edit: I think this should be the same:
SELECT count(*) / count(distinct T.Grouping)
FROM Table T
WHERE T.Update_time =
(SELECT MAX (B.Update_time)
FROM Table B
WHERE (B.Id = T.Id))
When the normType
is NORM_MINMAX
, cv::normalize
normalizes _src
in such a way that the min value of dst
is alpha
and max value of dst
is beta
. cv::normalize
does its magic using only scales and shifts (i.e. adding constants and multiplying by constants).
CV_8UC1
says how many channels dst
has.
The documentation here is pretty clear: http://docs.opencv.org/modules/core/doc/operations_on_arrays.html#normalize
CREATE PROCEDURE SP_Reporting(IN tablename VARCHAR(20))
proc_label:BEGIN
IF tablename IS NULL THEN
LEAVE proc_label;
END IF;
#proceed the code
END;
I know this question is old but I ran across it and I know other people might have the same problem. All these answers are okay but do not give proper detail or actual TRUE advice.
When wanting to style a specific section of a paragraph use the span tag.
<p><span style="font-weight:900">Andy Warhol</span> (August 6, 1928 - February 22, 1987)
was an American artist who was a leading figure in the visual art movement known as pop
art.</p>
Andy Warhol (August 6, 1928 - February 22, 1987) was an American artist who was a leading figure in the visual art movement known as pop art.
As the code shows, the span tag styles on the specified words: "Andy Warhol". You can further style a word using any CSS font styling codes.
{font-weight; font-size; text-decoration; font-family; margin; color}, etc.
Any of these and more can be used to style a word, group of words, or even specified paragraphs without having to add a class to the CSS Style Sheet Doc. I hope this helps someone!
Short way is
FrameLayout layDraw = (FrameLayout) findViewById(R.id.layDraw); /*Your root view to be part of screenshot*/
layDraw.buildDrawingCache();
Bitmap bmp = layDraw.getDrawingCache();
The best way to go about it would be to get a SynchronizationContext
from the UI thread and use it. This class abstracts marshalling calls to other threads, and makes testing easier (in contrast to using WPF's Dispatcher
directly). For example:
class MyViewModel
{
private readonly SynchronizationContext _syncContext;
public MyViewModel()
{
// we assume this ctor is called from the UI thread!
_syncContext = SynchronizationContext.Current;
}
// ...
private void watcher_Changed(object sender, FileSystemEventArgs e)
{
_syncContext.Post(o => DGAddRow(crp.Protocol, ft), null);
}
}
Maybe the 40 bytes fits into the pipe buffer, and the 40000 bytes doesn't?
Edit:
The sending process is sent a SIGPIPE signal when you try to write to a closed pipe. I don't know exactly when the signal is sent, or what effect the pipe buffer has on this. You may be able to recover by trapping the signal with the sigaction call.
It may be possible to use XSLT with JSON. Verson 3 of XPath(3.1) XSLT(3.0) and XQuery(3.1) supports JSON in some way. This seems to be available in the commercial version of Saxon, and might at some point be included in the HE version. https://www.saxonica.com/html/documentation/functions/fn/parse-json.html
-
What I would expect from an alternative solution:
I would want to be able input JSON to fetch a matching set of data, and output JSON or TEXT.
Access arbitrary properties and evaluate the values
Support for conditional logic
I would want the transformation scripts to be external from the tool, text based, and preferably a commonly used language.
Potential alternative?
I wonder if SQL could be a suitable alternative. https://docs.microsoft.com/en-us/sql/relational-databases/json/json-data-sql-server
It would be nice if the alternative tool could handle JSON and XML https://docs.microsoft.com/en-us/sql/relational-databases/xml/openxml-sql-server
I have not yet tried to convert the XSLT scripts I use to SQL, or fully evaluated this option yet, but I hope to look into it more soon. Just some thoughts so far.
PRAGMA foreign_keys=off;
BEGIN TRANSACTION;
ALTER TABLE table1 RENAME TO _table1_old;
CREATE TABLE table1 (
( column1 datatype [ NULL | NOT NULL ],
column2 datatype [ NULL | NOT NULL ],
...
);
INSERT INTO table1 (column1, column2, ... column_n)
SELECT column1, column2, ... column_n
FROM _table1_old;
COMMIT;
PRAGMA foreign_keys=on;
For more info: https://www.techonthenet.com/sqlite/tables/alter_table.php
just adding the dependency of Lombok is not enough. You'll have to install the plugin of Lombok too.
You can get your Lombok jar file in by navigating through (Only if you have added the dependency in any of the POM.)
m2\repository\org\projectlombok\lombok\1.18.12\lombok-1.18.12
Also, if Lombok could not find the IDE, manually specify the .exe of your IDE and click install.
Restart your IDE.
That's it.
If you face any problem,
Below is a beautiful and short video about how to install the plugin of Lombok.
Just to save your time, you can start from 1:40.
https://www.youtube.com/watch?v=5K6NNX-GGDI
If it still doesn't work,
Verify that lombok.jar is there in your sts.ini file (sts config file, present in sts folder.)
-javaagent:lombok.jar
Do an Alt+F5. This will update your maven.
Close your IDE and again start it.
I like the versatility of jEdit (http://www.jedit.org), its got a lot of plugins, crossplatform and has also stuff like block selection which I use all the time.
The downside is, because it is written in java, it is not the fastest one.
This:
\d+
should work
Edit, no clue why I added the "+", without it works just as fine.
\d
for /F "eol= delims=~" %%d in ('CD') do set curdir=%%d
pushd %curdir%
Ctrl + R - to open the command line and then writes:
node -v
Just did a quick test on ubuntu:
installed mysql-server, which created /etc/mysql/my.cnf
mysqld --verbose --help | grep -A 1 "Default options"
110112 13:35:26 [Note] Plugin 'FEDERATED' is disabled.
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf
created /etc/my.cnf and /usr/etc/my.cnf, each with a different port number
restarted mysql - it was using the port number set in /usr/etc/my.cnf
Also meanwhile found the --defaults-file option to the mysqld. If you specify a config file there, only that one will be used, regardless of what is returned by /usr/sbin/mysqld --verbose --help | grep -A 1 "Default options"
This is a quick hacky way: ls -lart | grep -v ^total
.
Basically, remove any lines that start with "total", which in ls
output should only be the first line.
A more general way (for anything):
ls -lart | sed "1 d"
sed "1 d"
means only print everything but first line.
Merging two array will not remove the duplicate you can try the below example to get unique from two array
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("e"=>"red","f"=>"green","g"=>"blue");
$result=array_diff($a1,$a2);
print_r($result);
After reading several posts on this topic, testing different configurations and based on some insights from this mysql bug thread that's what I have understood:
useLegacyDatetimeCode=true
, which in conjunction with useJDBCCompliantTimezoneShift=true
would make the application get the database time zone on every connection. In this mode GMT time zones such as 'British Summer Time' would be converted to the internal java/JDBC format. New time zones could be defined in a .properties file such as this oneuseJDBCCompliantTimezoneShift
) and legacy time format (useLegacyDatetimeCode
) were removed (see mysql jdbc connector changelog). therefore setting these 2 parameters has no effect as they are completely ignored (new default is useLegacyDateTimeCode=false
)serverTimezone
became mandatory if any of the time zones (application/database servers) are not in the format 'UTC+xx' or 'GMT+xx'jdbc:mysql://localhost:3306/myschema?serverTimezone=UTC
, even if your application / database servers are not in this timezone. The important is for the application connection string + database to be synchronized with the same time zone. In different words, simply setting serverTimezone=UTC with a different time zone on the database server will shift any dates extracted from the databasedefault-time-zone='+00:00'
(details in this StackOverflow post)The official docker answer to Run multiple services in a container.
It explains how you can do it with an init system (systemd, sysvinit, upstart) , a script (CMD ./my_wrapper_script.sh
) or a supervisor like supervisord
.
The &&
workaround can work only for services that starts in background (daemons) or that will execute quickly without interaction and release the prompt. Doing this with an interactive service (that keeps the prompt) and only the first service will start.
Just check
in MacOS
File directory = new File("/Users/sivo03/eclipse-workspace/For4DC/AutomationReportBackup/"+dir);
File directoryApache = new File("/Users/sivo03/Automation/apache-tomcat-9.0.22/webapps/AutomationReport/"+dir);
and same we use in windows
File directory = new File("C:\\Program Files (x86)\\Jenkins\\workspace\\BrokenLinkCheckerALL\\AutomationReportBackup\\"+dir);
File directoryApache = new File("C:\\Users\\Admin\\Downloads\\Automation\\apache-tomcat-9.0.26\\webapps\\AutomationReports\\"+dir);
use double backslash instead of single frontslash
so no need any converter tool just use find and replace
"C:\Documents and Settings\Manoj\Desktop" to "C:\\Documents and Settings\\Manoj\\Desktop"
You need to tell the Range.RemoveDuplicates method what column to use. Additionally, since you have expressed that you have a header row, you should tell the .RemoveDuplicates method that.
Sub dedupe_abcd()
Dim icol As Long
With Sheets("Sheet1") '<-set this worksheet reference properly!
icol = Application.Match("abcd", .Rows(1), 0)
With .Cells(1, 1).CurrentRegion
.RemoveDuplicates Columns:=icol, Header:=xlYes
End With
End With
End Sub
Your original code seemed to want to remove duplicates from a single column while ignoring surrounding data. That scenario is atypical and I've included the surrounding data so that the .RemoveDuplicates process does not scramble your data. Post back a comment if you truly wanted to isolate the RemoveDuplicates process to a single column.
The latest version of Genymotion (2.10.0 onwards) now allows you to install GApps from the emulator toolbar:
Click the GApps button the toolbar
Accept the Terms and Conditions
Your download of google apps will then begin
Once the download is complete simply restart the virtual device!
$newarr=array();
foreach($arrs as $value)
{
foreach($value as $key=>$secondValue)
{
if(!isset($newarr[$key]))
{
$newarr[$key]=0;
}
$newarr[$key]+=$secondValue;
}
}
static $preg = <<<'END'
%(
[\x09\x0A\x0D\x20-\x7E]
| [\xC2-\xDF][\x80-\xBF]
| \xE0[\xA0-\xBF][\x80-\xBF]
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}
| \xED[\x80-\x9F][\x80-\xBF]
| \xF0[\x90-\xBF][\x80-\xBF]{2}
| [\xF1-\xF3][\x80-\xBF]{3}
| \xF4[\x80-\x8F][\x80-\xBF]{2}
)%xs
END;
if (preg_match_all($preg, $string, $match)) {
$string = implode('', $match[0]);
} else {
$string = '';
}
it work on our service
Date().toLocaleString()
returns this: 7/31/2018, 12:58:03 PM
Pretty close - just drop the comma and the seconds:
new Date().toLocaleString().replace(",","").replace(/:.. /," ");
Results: 7/31/2018 12:58 PM
Another example for the C++11 standard:
set<int> data;
data.insert(4);
data.insert(5);
for (const int &number : data)
cout << number;
In my case i happen to have another .angular-cli.json
file in my src
folder. Removing it solved the problem. Hope it helps
angular 4.1.1
angular-cli 1.0.1
As apps run in the background anyway. I’m assuming what your really asking is how do you make apps do stuff in the background. The solution below will make your app do stuff in the background after opening the app and after the system has rebooted.
Below, I’ve added a link to a fully working example (in the form of an Android Studio Project)
This subject seems to be out of the scope of the Android docs, and there doesn’t seem to be any one comprehensive doc on this. The information is spread across a few docs.
The following docs tell you indirectly how to do this: https://developer.android.com/reference/android/app/Service.html
https://developer.android.com/reference/android/content/BroadcastReceiver.html
https://developer.android.com/guide/components/bound-services.html
In the interests of getting your usage requirements correct, the important part of this above doc to read carefully is: #Binder, #Messenger and the components link below:
https://developer.android.com/guide/components/aidl.html
Here is the link to a fully working example (in Android Studio format): http://developersfound.com/BackgroundServiceDemo.zip
This project will start an Activity which binds to a service; implementing the AIDL.
This project is also useful to re-factor for the purpose of IPC across different apps.
This project is also developed to start automatically when Android restarts (provided the app has been run at least one after installation and app is not installed on SD card)
When this app/project runs after reboot, it dynamically uses a transparent view to make it look like no app has started but the service of the associated app starts cleanly.
This code is written in such a way that it’s very easy to tweak to simulate a scheduled service.
This project is developed in accordance to the above docs and is subsequently a clean solution.
There is however a part of this project which is not clean being: I have not found a way to start a service on reboot without using an Activity. If any of you guys reading this post have a clean way to do this please post a comment.
we can find length of array by using array_name.length attribute
int [] i = i.length;
You are missing table NewScores
, so it can't be found. Just join this table.
If you really want to avoid joining it directly you can replace NewScores.NetScore
with SELECT NetScore FROM NewScores WHERE {conditions on which they should be matched}
This is a short solution to change the request UserAgent on the fly.
Change UserAgent of a request with Chrome
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
driver = webdriver.Chrome(driver_path)
driver.execute_cdp_cmd('Network.setUserAgentOverride', {"userAgent":"python 2.7", "platform":"Windows"})
driver.get('http://amiunique.org')
then return your useragent:
agent = driver.execute_script("return navigator.userAgent")
Some sources
The source code of webdriver.py from SeleniumHQ (https://github.com/SeleniumHQ/selenium/blob/11c25d75bd7ed22e6172d6a2a795a1d195fb0875/py/selenium/webdriver/chrome/webdriver.py) extends its functionalities through the Chrome Devtools Protocol
def execute_cdp_cmd(self, cmd, cmd_args):
"""
Execute Chrome Devtools Protocol command and get returned result
We can use the Chrome Devtools Protocol Viewer to list more extended functionalities (https://chromedevtools.github.io/devtools-protocol/tot/Network#method-setUserAgentOverride) as well as the parameters type to use.
One thing to keep in mind with positioning is that each view has an index relative to its parent view. So if you have a linear layout with three subviews, the subviews will each have an index: 0, 1, 2 in the above case.
This allows you to add a view to the last position (or the end) in a parent view by doing something like this:
int childCount = parent.getChildCount();
parentView.addView(newView, childCount);
Alternatively you could replace a view using something like the following:
int childIndex = parentView.indexOfChild(childView);
childView.setVisibility(View.GONE);
parentView.addView(newView, childIndex);
The simplest way is to save the original value using data()
when the element gets focus. Here is a really basic example:
JSFiddle: http://jsfiddle.net/TrueBlueAussie/e4ovx435/
$('input').on('focusin', function(){
console.log("Saving value " + $(this).val());
$(this).data('val', $(this).val());
});
$('input').on('change', function(){
var prev = $(this).data('val');
var current = $(this).val();
console.log("Prev value " + prev);
console.log("New value " + current);
});
Note: it is generally more efficient to use a delegated event handler when there can be multiple matching elements. This way only a single handler is added (smaller overhead and faster initialisation) and any speed difference at event time is negligible.
Here is the same example using delegated events connected to document
:
$(document).on('focusin', 'input', function(){
console.log("Saving value " + $(this).val());
$(this).data('val', $(this).val());
}).on('change','input', function(){
var prev = $(this).data('val');
var current = $(this).val();
console.log("Prev value " + prev);
console.log("New value " + current);
});
JsFiddle: http://jsfiddle.net/TrueBlueAussie/e4ovx435/65/
Delegated events work by listening for an event (focusin
, change
etc) on an ancestor element (document
* in this case), then applying the jQuery filter (input
) to only the elements in the bubble chain then applying the function to only those matching elements that caused the event.
*Note: A a general rule, use document
as the default for delegated events and not body
. body
has a bug, to do with styling, that can cause it to not get bubbled mouse events. Also document
always exists so you can attach to it outside of a DOM ready handler :)
The code
Private Sub Worksheet_Activate()
Dim PvtTbl As PivotTable
Cells.EntireColumn.AutoFit
For Each PvtTbl In Worksheets("Sales Details").PivotTables
PvtTbl.RefreshTable
Next
End Sub
works fine.
The code is used in the activate sheet module, thus it displays a flicker/glitch when the sheet is activated.
.*
and.+
are for any chars except for new lines.
Just in case, you would wanted to include new lines, the following expressions might also work for those languages that double escaping is required such as Java or C++:
[\\s\\S]*
[\\d\\D]*
[\\w\\W]*
for zero or more times, or
[\\s\\S]+
[\\d\\D]+
[\\w\\W]+
for one or more times.
Double escaping is not required for some languages such as, C#, PHP, Ruby, PERL, Python, JavaScript:
[\s\S]*
[\d\D]*
[\w\W]*
[\s\S]+
[\d\D]+
[\w\W]+
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegularExpression{
public static void main(String[] args){
final String regex_1 = "[\\s\\S]*";
final String regex_2 = "[\\d\\D]*";
final String regex_3 = "[\\w\\W]*";
final String string = "AAA123\n\t"
+ "ABCDEFGH123\n\t"
+ "XXXX123\n\t";
final Pattern pattern_1 = Pattern.compile(regex_1);
final Pattern pattern_2 = Pattern.compile(regex_2);
final Pattern pattern_3 = Pattern.compile(regex_3);
final Matcher matcher_1 = pattern_1.matcher(string);
final Matcher matcher_2 = pattern_2.matcher(string);
final Matcher matcher_3 = pattern_3.matcher(string);
if (matcher_1.find()) {
System.out.println("Full Match for Expression 1: " + matcher_1.group(0));
}
if (matcher_2.find()) {
System.out.println("Full Match for Expression 2: " + matcher_2.group(0));
}
if (matcher_3.find()) {
System.out.println("Full Match for Expression 3: " + matcher_3.group(0));
}
}
}
Full Match for Expression 1: AAA123
ABCDEFGH123
XXXX123
Full Match for Expression 2: AAA123
ABCDEFGH123
XXXX123
Full Match for Expression 3: AAA123
ABCDEFGH123
XXXX123
If you wish to explore the expression, it's been explained on the top right panel of regex101.com. If you'd like, you can also watch in this link, how it would match against some sample inputs.
jex.im visualizes regular expressions:
There are two kinds of cascades in Doctrine:
1) ORM level - uses cascade={"remove"}
in the association - this is a calculation that is done in the UnitOfWork and does not affect the database structure. When you remove an object, the UnitOfWork will iterate over all objects in the association and remove them.
2) Database level - uses onDelete="CASCADE"
on the association's joinColumn - this will add On Delete Cascade to the foreign key column in the database:
@ORM\JoinColumn(name="father_id", referencedColumnName="id", onDelete="CASCADE")
I also want to point out that the way you have your cascade={"remove"} right now, if you delete a Child object, this cascade will remove the Parent object. Clearly not what you want.
I've searched far and wide for a solution to this problem for a long time. Ideally we want to have the child greater than the parent, but without knowing the constraints of the parent in advance.
And I finally found a brilliant generic answer here. Copying it verbatim:
The idea here is: push the container to the exact middle of the browser window with left: 50%;, then pull it back to the left edge with negative -50vw margin.
.child-div {
width: 100vw;
position: relative;
left: 50%;
right: 50%;
margin-left: -50vw;
margin-right: -50vw;
}
If you're willing to use LLVM, check this out: http://llvm.org/docs/tutorial/. It teaches you how to write a compiler from scratch using LLVM's framework, and doesn't assume you have any knowledge about the subject.
The tutorial suggest you write your own parser and lexer etc, but I advise you to look into bison and flex once you get the idea. They make life so much easier.
YOU HAVE TO BE CAREFUL when you initialize state
from props
in constructor. Even if props
changed to new one, the state wouldn't be changed because mount never happen again.
So getDerivedStateFromProps
exists for that.
class FirstComponent extends React.Component {
state = {
description: ""
};
static getDerivedStateFromProps(nextProps, prevState) {
if (prevState.description !== nextProps.description) {
return { description: nextProps.description };
}
return null;
}
render() {
const {state: {description}} = this;
return (
<input type="text" value={description} />
);
}
}
Or use key
props as a trigger to initialize:
class SecondComponent extends React.Component {
state = {
// initialize using props
};
}
<SecondComponent key={something} ... />
In the code above, if something
changed, then SecondComponent
will re-mount as a new instance and state
will be initialized by props
.
If you want a true O(n)
algorithm, as opposed to O(kn)
or something like that, then you should use quickselect (it's basically quicksort where you throw out the partition that you're not interested in). My prof has a great writeup, with the runtime analysis: (reference)
The QuickSelect algorithm quickly finds the k-th smallest element of an unsorted array of n
elements. It is a RandomizedAlgorithm, so we compute the worst-case expected running time.
Here is the algorithm.
QuickSelect(A, k)
let r be chosen uniformly at random in the range 1 to length(A)
let pivot = A[r]
let A1, A2 be new arrays
# split into a pile A1 of small elements and A2 of big elements
for i = 1 to n
if A[i] < pivot then
append A[i] to A1
else if A[i] > pivot then
append A[i] to A2
else
# do nothing
end for
if k <= length(A1):
# it's in the pile of small elements
return QuickSelect(A1, k)
else if k > length(A) - length(A2)
# it's in the pile of big elements
return QuickSelect(A2, k - (length(A) - length(A2))
else
# it's equal to the pivot
return pivot
What is the running time of this algorithm? If the adversary flips coins for us, we may find that the pivot is always the largest element and k
is always 1, giving a running time of
T(n) = Theta(n) + T(n-1) = Theta(n2)
But if the choices are indeed random, the expected running time is given by
T(n) <= Theta(n) + (1/n) ?i=1 to nT(max(i, n-i-1))
where we are making the not entirely reasonable assumption that the recursion always lands in the larger of A1
or A2
.
Let's guess that T(n) <= an
for some a
. Then we get
T(n)
<= cn + (1/n) ?i=1 to nT(max(i-1, n-i))
= cn + (1/n) ?i=1 to floor(n/2) T(n-i) + (1/n) ?i=floor(n/2)+1 to n T(i)
<= cn + 2 (1/n) ?i=floor(n/2) to n T(i)
<= cn + 2 (1/n) ?i=floor(n/2) to n ai
and now somehow we have to get the horrendous sum on the right of the plus sign to absorb the cn
on the left. If we just bound it as 2(1/n) ?i=n/2 to n an
, we get roughly 2(1/n)(n/2)an = an
. But this is too big - there's no room to squeeze in an extra cn
. So let's expand the sum using the arithmetic series formula:
?i=floor(n/2) to n i
= ?i=1 to n i - ?i=1 to floor(n/2) i
= n(n+1)/2 - floor(n/2)(floor(n/2)+1)/2
<= n2/2 - (n/4)2/2
= (15/32)n2
where we take advantage of n being "sufficiently large" to replace the ugly floor(n/2)
factors with the much cleaner (and smaller) n/4
. Now we can continue with
cn + 2 (1/n) ?i=floor(n/2) to n ai,
<= cn + (2a/n) (15/32) n2
= n (c + (15/16)a)
<= an
provided a > 16c
.
This gives T(n) = O(n)
. It's clearly Omega(n)
, so we get T(n) = Theta(n)
.
You can use Gson
.
Step 1
Add compile
compile 'com.google.code.gson:gson:2.8.2'
Step 2
Convert json to Kotlin Bean
(use JsonToKotlinClass)
Like this
Json
data
{
"timestamp": "2018-02-13 15:45:45",
"code": "OK",
"message": "user info",
"path": "/user/info",
"data": {
"userId": 8,
"avatar": "/uploads/image/20180115/1516009286213053126.jpeg",
"nickname": "",
"gender": 0,
"birthday": 1525968000000,
"age": 0,
"province": "",
"city": "",
"district": "",
"workStatus": "Student",
"userType": 0
},
"errorDetail": null
}
Kotlin Bean
class MineUserEntity {
data class MineUserInfo(
val timestamp: String,
val code: String,
val message: String,
val path: String,
val data: Data,
val errorDetail: Any
)
data class Data(
val userId: Int,
val avatar: String,
val nickname: String,
val gender: Int,
val birthday: Long,
val age: Int,
val province: String,
val city: String,
val district: String,
val workStatus: String,
val userType: Int
)
}
Step 3
Use Gson
var gson = Gson()
var mMineUserEntity = gson?.fromJson(response, MineUserEntity.MineUserInfo::class.java)
You'll need to either insert BR
tag appropriately in the resulting string, or use for example a PRE
tag so that the formatting of the stringify
is retained:
var data = { a: 1, b: 2 };
var Hello = React.createClass({
render: function() {
return <div><pre>{JSON.stringify(data, null, 2) }</pre></div>;
}
});
React.render(<Hello />, document.getElementById('container'));
class PrettyPrintJson extends React.Component {
render() {
// data could be a prop for example
// const { data } = this.props;
return (<div><pre>{JSON.stringify(data, null, 2) }</pre></div>);
}
}
ReactDOM.render(<PrettyPrintJson/>, document.getElementById('container'));
const PrettyPrintJson = ({data}) => {
// (destructured) data could be a prop for example
return (<div><pre>{ JSON.stringify(data, null, 2) }</pre></div>);
}
Or, ...
const PrettyPrintJson = ({data}) => (<div><pre>{
JSON.stringify(data, null, 2) }</pre></div>);
(You might even want to use a memo, 16.6+)
const PrettyPrintJson = React.memo(({data}) => (<div><pre>{
JSON.stringify(data, null, 2) }</pre></div>));
static T DeserializeXml<T>(string sourceXML) where T : class
{
var serializer = new XmlSerializer(typeof(T));
T result = null;
using (TextReader reader = new StringReader(sourceXML))
{
result = (T) serializer.Deserialize(reader);
}
return result;
}
From long to DateTime: new DateTime(long ticks)
From DateTime to long: DateTime.Ticks
Yes. You need to prefix the table name with "#" (hash) to create temporary tables.
If you do NOT need the table later, go ahead & create it. Temporary Tables are very much like normal tables. However, it gets created in tempdb. Also, it is only accessible via the current session i.e. For EG: if another user tries to access the temp table created by you, he'll not be able to do so.
"##" (double-hash creates "Global" temp table that can be accessed by other sessions as well.
Refer the below link for the Basics of Temporary Tables: http://www.codeproject.com/Articles/42553/Quick-Overview-Temporary-Tables-in-SQL-Server-2005
If the content of your table is less than 5000 rows & does NOT contain data types such as nvarchar(MAX), varbinary(MAX), consider using Table Variables.
They are the fastest as they are just like any other variables which are stored in the RAM. They are stored in tempdb as well, not in RAM.
DECLARE @ItemBack1 TABLE
(
column1 int,
column2 int,
someInt int,
someVarChar nvarchar(50)
);
INSERT INTO @ItemBack1
SELECT column1,
column2,
someInt,
someVarChar
FROM table2
WHERE table2.ID = 7;
More Info on Table Variables: http://odetocode.com/articles/365.aspx
A performance comparison:
322ms: show tables like 'table201608';
691ms: select 1 from table201608 limit 1;
319ms: SELECT count(*) FROM information_schema.TABLES WHERE (TABLE_SCHEMA = 'mydb') AND (TABLE_NAME = 'table201608');
Note if you're running this a lot -- like over many HTML requests in a short period -- the 2nd will be way faster since it'll be cached an average 200 ms or faster.
.First
will throw an exception when there are no results. .FirstOrDefault
won't, it will simply return either null (reference types) or the default value of the value type. (e.g like 0
for an int.) The question here is not when you want the default type, but more: Are you willing to handle an exception or handle a default value? Since exceptions should be exceptional, FirstOrDefault
is preferred when you're not sure if you're going to get results out of your query. When logically the data should be there, exception handling can be considered.
Skip()
and Take()
are normally used when setting up paging in results. (Like showing the first 10 results, and the next 10 on the next page, etc.)
Hope this helps.
On Ubuntu 14.04 I resolved this by using the pip installation bootstrap script, as described in the documentation
wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py
That's an OK solution for a development environment.
There are lots of systems that support LDAP to talk to them, not just Active Directory.
Sun, IBM, Novell all have directory services that are very effective as LDAP servers.
The Guava library contains convenience methods for creating lists and other collections which makes this much prettier than using the standard library classes.
Example:
ArrayList<String> list = newArrayList("a", "b", "c");
(This assumes import static com.google.common.collect.Lists.newArrayList;
)
If you are using GCC, you can use the GNU extension asprintf function.
char* str;
asprintf (&str, "%i", 12313);
free(str);
This may be a common problem for new users of Matplotlib to draw vertical and horizontal lines. In order to understand this problem, you should be aware that different coordinate systems exist in Matplotlib.
The method axhline and axvline are used to draw lines at the axes coordinate. In this coordinate system, coordinate for the bottom left point is (0,0), while the coordinate for the top right point is (1,1), regardless of the data range of your plot. Both the parameter xmin
and xmax
are in the range [0,1].
On the other hand, method hlines and vlines are used to draw lines at the data coordinate. The range for xmin
and xmax
are the in the range of data limit of x axis.
Let's take a concrete example,
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 5, 100)
y = np.sin(x)
fig, ax = plt.subplots()
ax.plot(x, y)
ax.axhline(y=0.5, xmin=0.0, xmax=1.0, color='r')
ax.hlines(y=0.6, xmin=0.0, xmax=1.0, color='b')
plt.show()
It will produce the following plot:
The value for xmin
and xmax
are the same for the axhline
and hlines
method. But the length of produced line is different.
The dash type of a linestyle
is given by the linetype
, which does also select the line color unless you explicitely set an other one with linecolor
.
However, the support for dashed lines depends on the selected terminal:
png
(uses libgd
)pngcairo
, support dashed lines, but it is disables by default. To enable it, use set termoption dashed
, or set terminal pngcairo dashed ...
.linetype
, use the test
command:Running
set terminal pngcairo dashed
set output 'test.png'
test
set output
gives:
whereas, the postscript
terminal shows different dash patterns:
set terminal postscript eps color colortext
set output 'test.eps'
test
set output
Starting with version 5.0 the following changes related to linetypes, dash patterns and line colors are introduced:
A new dashtype
parameter was introduced:
To get the predefined dash patterns, use e.g.
plot x dashtype 2
You can also specify custom dash patterns like
plot x dashtype (3,5,10,5),\
2*x dashtype '.-_'
The terminal options dashed
and solid
are ignored. By default all lines are solid. To change them to dashed, use e.g.
set for [i=1:8] linetype i dashtype i
The default set of line colors was changed. You can select between three different color sets with set colorsequence default|podo|classic
:
There is an alternative - you can provide a member of type XmlSerializerNamespaces in the type to be serialized. Decorate it with the XmlNamespaceDeclarations attribute. Add the namespace prefixes and URIs to that member. Then, any serialization that does not explicitly provide an XmlSerializerNamespaces will use the namespace prefix+URI pairs you have put into your type.
Example code, suppose this is your type:
[XmlRoot(Namespace = "urn:mycompany.2009")]
public class Person {
[XmlAttribute]
public bool Known;
[XmlElement]
public string Name;
[XmlNamespaceDeclarations]
public XmlSerializerNamespaces xmlns;
}
You can do this:
var p = new Person
{
Name = "Charley",
Known = false,
xmlns = new XmlSerializerNamespaces()
}
p.xmlns.Add("",""); // default namespace is emoty
p.xmlns.Add("c", "urn:mycompany.2009");
And that will mean that any serialization of that instance that does not specify its own set of prefix+URI pairs will use the "p" prefix for the "urn:mycompany.2009" namespace. It will also omit the xsi and xsd namespaces.
The difference here is that you are adding the XmlSerializerNamespaces to the type itself, rather than employing it explicitly on a call to XmlSerializer.Serialize(). This means that if an instance of your type is serialized by code you do not own (for example in a webservices stack), and that code does not explicitly provide a XmlSerializerNamespaces, that serializer will use the namespaces provided in the instance.
I agree with nemo and I wrote a little tool to make it all real easy.
bitbucket.org/gotamer/cfg is a json configuration package
See doc.go for an example
One way to do it is to use flexbox in order to align the text on the middle. The way I found to do it, is the following:
HTML:
<div class="circle-without-text">
<div class="text-inside-circle">
The text
</div>
</div>
CSS:
.circle-without-text {
border-radius: 50%;
width: 70vh;
height: 70vh;
background-color: red;
position: relative;
}
.text-inside-circle {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
display: flex;
align-items: center;
justify-content: center;
}
Here the plnkr: https://plnkr.co/edit/EvWYLNfTb1B7igoc3TZx?p=preview
> puts "'"+['12','34','35','231']*"','"+"'"
'12','34','35','231'
> puts ['12','34','35','231'].inspect[1...-1].gsub('"',"'")
'12', '34', '35', '231'