You can directly return a different view like:
return View("NameOfView", Model);
Or you can make a partial view and can return like:
return PartialView("PartialViewName", Model);
Check the build action of your view (.cshtml file) It should be set to content. In some cases, I have seen that the build action was set to None (by mistake) and this particular view was not deploy on the target machine even though you see that view present in visual studio project file under valid folder
See this: Demo
$('#cat_icon,.panel_title').click(function () {
$('#categories,#cat_icon').stop().slideToggle('slow');
});
Update : To slide from left to right: Demo2
Note: Second one uses jquery-ui also
I had this error thrown when I tried to rename a folder very rapidly after it had been either moved or created.
A simple System.Threading.Thread.Sleep(500);
solved it:
void RenameFile(string from, string to)
{
try
{
System.IO.File.Move(from, to)
}
catch
{
System.Threading.Thread.Sleep(500);
RenameFile(from, to);
}
}
A tangential note on the approaches here that load use setTimeout
or setInterval
. In those cases it's possible that when your check runs again, the DOM will already have loaded, and the browser's DOMContentLoaded
event will have been fired, so you can't detect that event reliably using these approaches. What I found is that jQuery's ready
still works, though, so you can embed your usual
jQuery(document).ready(function ($) { ... }
inside your setTimeout
or setInterval
and everything should work as normal.
GetFiles can only match a single pattern, but you can use Linq to invoke GetFiles with multiple patterns:
FileInfo[] fi = new string[]{"*.txt","*.doc"}
.SelectMany(i => di.GetFiles(i, SearchOption.AllDirectories))
.ToArray();
See comments section here: http://www.codeproject.com/KB/aspnet/NET_DirectoryInfo.aspx
ASCX files are server-side Web application framework designed for Web development to produce dynamic Web pages.They like DLL codes but you can use there's TAGS You can write them once and use them in any places in your ASP pages.If you have a file named "Controll.ascx" then its code will named "Controll.ascx.cs". You can embed it in a ASP page to use it:
You could also use the RenderView Controller extension
from here
(source)
and use it like this:
public ActionResult Do() {
var html = this.RenderView("index", theModel);
...
}
it works for razor and web-forms viewengines
Belisarius' solution is good.
To elaborate on that slightly terse answer:
/E
makes Robocopy recursively copy subdirectories,
including empty ones. /XC
excludes existing files with
the same timestamp, but different
file sizes. Robocopy normally overwrites those. /XN
excludes existing files newer
than the copy in the source
directory. Robocopy normally
overwrites those. /XO
excludes
existing files older
than the copy in the source
directory. Robocopy normally
overwrites those.With the Changed, Older, and Newer classes excluded, Robocopy does exactly what the original poster wants - without needing to load a scripting environment.
Just create your own template for the type in Views/Shared/EditorTemplates/MyTypeEditor.vbhtml
@ModelType MyType
@ModelType MyType
@Code
Dim name As String = ViewData("ControlId")
If String.IsNullOrEmpty(name) Then
name = "MyTypeEditor"
End If
End Code
' Mark-up for MyType Editor
@Html.TextBox(name, Model, New With {.style = "width:65px;background-color:yellow"})
Invoke editor from your view with the model property:
@Html.EditorFor(Function(m) m.MyTypeProperty, "MyTypeEditor", New {.ControlId = "uniqueId"})
Pardon the VB syntax. That's just how we roll.
Extending the great answer from Dave. You can create a simple HtmlHelper.
public static IHtmlString RenderAsJson(this HtmlHelper helper, object model)
{
return helper.Raw(Json.Encode(model));
}
And in your view:
@Html.RenderAsJson(Model)
This way you can centralize the logic for creating the JSON if you, for some reason, would like to change the logic later.
Check the generated code at MyAreaAreaRegistration.cs and make sure that the controller parameter is set to your default controller, otherwise the controller will be called bot for some reason ASP.NET MVC won't search for the views at the area folder
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"SomeArea_default",
"SomeArea/{controller}/{action}/{id}",
new { controller = "SomeController", action = "Index", id = UrlParameter.Optional }
);
}
I like Raj's answer. Programs like ListManager & frameworks like DNN do similar things, and if easy editing by non-technical users is required, WYSIWYG editors to modify HTML stored in SQL is a mostly easy, straightforward way to go and can easily accommodate editing headers independently from footers, etc, as well as using tokens to dynamically insert values.
One thing to keep in mind if using the above method (or any, really) is to be strict and careful about which types of styling and tags you allow the editors to insert. If you think browsers are finicky, just wait until you see how differently email clients render the same thing...
This error can also be caused by having zero methods tagged with the OperationContract attribute. This was my problem when building a new service and testing it a long the way.
in solution explorer just right click and select convert to web application. It will generate all the designer files again.
Decorating one of the action params with [FromBody] solved the issue for me:
public async Task<IHttpActionResult> SetAmountOnEntry(string id, [FromBody]int amount)
However ASP.NET would infer it correctly if complex object was used in the method parameter:
public async Task<IHttpActionResult> UpdateEntry(string id, MyEntry entry)
That suggested error message may duplicate the error message the browser already displays. In chrome, the 2 similar error messages are displayed one after another in the same window.
In chrome, the text displayed after the custom message is: "Are you sure you want to leave this page?". In firefox, it does not display our custom error message at all (but still displays the dialog).
A more appropriate error message might be:
window.onbeforeunload = function() {
return "If you leave this page, you will lose any unsaved changes.";
}
Or stackoverflow style: "You have started writing or editing a post."
Use the following to evaluate an expression (constant 0 evaluates to false).
#if 0
...
#endif
For apache look up SymLink or you can solve via the OS with Symbolic Links or on linux set up a library link/etc
My answer is one method specifically to windows 10.
So my method involves mapping a network drive to U:/ (e.g. I use G:/ for Google Drive)
open cmd
and type hostname
(example result: LAPTOP-G666P000
, you could use your ip instead, but using a static hostname for identifying yourself makes more sense if your network stops)
Press Windows_key + E
> right click 'This PC'
> press N
(It's Map Network drive, NOT add a network location)
If you are right clicking the shortcut on the desktop you need to press N then enter
Fill out U:
or G:
or Z:
or whatever you want
Example Address: \\LAPTOP-G666P000\c$\Users\username\
Then you can use <a href="file:///u:/2ndFile.html"><button type="submit">Local file</button>
like in your question
related: You can also use this method for FTPs, and setup multiple drives for different relative paths on that same network.
related2: I have used http://localhost/c$
etc before on some WAMP/apache servers too before, you can use .htaccess
for control/security but I recommend to not do so on a live/production machine -- or any other symlink documentroot example you can google
There is no need to use an ObjectIndexer<T>
, or change the interface of the original object (like suggested in most of the other answers).
You can simply narrow the options for key to the ones that are of type string using the following:
type KeysMatching<T, V> = { [K in keyof T]: T[K] extends V ? K : never }[keyof T];
This great solution comes from an answer to a related question here.
Like that you narrow to keys inside T that hold V values. So in your case to to limit to string you would do:
type KeysMatching<ISomeObject, string>;
In your example:
interface ISomeObject {
firstKey: string;
secondKey: string;
thirdKey: string;
}
let someObject: ISomeObject = {
firstKey: 'firstValue',
secondKey: 'secondValue',
thirdKey: 'thirdValue'
};
let key: KeysMatching<SomeObject, string> = 'secondKey';
// secondValue narrowed to string
let secondValue = someObject[key];
The advantage is that your ISomeObject
could now even hold mixed types, and you can anyway narrow the key to string values only, keys of other value types will be considered invalid. To illustrate:
interface ISomeObject {
firstKey: string;
secondKey: string;
thirdKey: string;
fourthKey: boolean;
}
let someObject: ISomeObject = {
firstKey: 'firstValue',
secondKey: 'secondValue',
thirdKey: 'thirdValue'
fourthKey: true
};
// Type '"fourthKey"' is not assignable to type 'KeysMatching<ISomeObject, string>'.(2322)
let otherKey: KeysMatching<SomeOtherObject, string> = 'fourthKey';
let fourthValue = someOtherObject[otherKey];
You find this example in this playground.
void inPlaceStrTrim(char* str) {
int k = 0;
int i = 0;
for (i=0; str[i] != '\0';) {
if (isspace(str[i])) {
// we have got a space...
k = i;
for (int j=i; j<strlen(str)-1; j++) {
str[j] = str[j+1];
}
str[strlen(str)-1] = '\0';
i = k; // start the loop again where we ended..
} else {
i++;
}
}
}
If you really don't care about props then the widest possible type is React.ReactType
.
This would allow passing native dom elements as string. React.ReactType
covers all of these:
renderGreeting('button');
renderGreeting(() => 'Hello, World!');
renderGreeting(class Foo extends React.Component {
render() {
return 'Hello, World!'
}
});
Update: note that the currently accepted answer perpetuates a common misunderstanding about the behaviour of git push
, which hasn't been corrected despite a comment pointing it out.
Your summary of what remotes are - like a nickname for the URL of a repository - is correct.
So why does the URL not git://[email protected]/peter/first_app.git but in the other syntax -- what syntax is it? Why must it end with .git? I tried not using .git at the end and it works too. If not .git, what else can it be? The git at the beginner seems to be a user account on the git server?
The two URLs that you've mentioned indicate that two different transport protocols should be used. The one beginning with git://
is for the git protocol, which is usually only used for read-only access to repositories. The other one, [email protected]:peter/first_app.git
, is one of the different ways of specifying access to a repository over SSH - this is the "scp-style syntax" described in the documentation. That the username in the scp-style syntax is git
is because of the way that GitHub deals with identifying users - essentially that username is ignored, and the user is identified based on the SSH key-pair that they used to authenticate.
As for the verbosity of git push origin master
, you've noticed that after the first push, you can then just do git push
. This is because of a series of difficult-to-remember-but-generally-helpful defaults :)
remote.master.url
in your case) is used. If that's not set up, then origin
is used.master
, master:my-experiment
, etc.) specified, then git defaults to pushing every local branch that has the same name as a branch on the remote. If you just have a branch called master
in common between your repository and the remote one, that'll be the same as pushing your master
to the remote master
.Personally, since I tend to have many topic branches (and often several remotes) I always use the form:
git push origin master
... to avoid accidentally pushing other branches.
In reply to your comments on one of the other answers, it sounds to me as if are learning about git in a top-down way very effectively - you've discovered that the defaults work, and your question is asking about why ;) To be more serious, git can be used essentially as simply as SVN, but knowing a bit about remotes and branches means you can use it much more flexibily and this can really change the way you work for the better. Your remark about a semester course makes me think of something Scott Chacon said in a podcast interview - students are taught about all kinds of basic tools in computer science and software engineering, but very rarely version control. Distributed version control systems such as git and Mercurial are now so important, and so flexible, that it would be worth teaching courses on them to give people a good grounding.
My view is that with git
, this learning curve is absolutely worth it - working with lots of topic branches, merging them easily, and pushing and pulling them about between different repositories is fantastically useful once you become confident with the system. It's just unfortunate that:
you need to use backslash before ". like \"
From the doc here you can see that
A character preceded by a backslash ( \ ) is an escape sequence and has special meaning to the compiler.
and " (double quote) is a escacpe sequence
When an escape sequence is encountered in a print statement, the compiler interprets it accordingly. For example, if you want to put quotes within quotes you must use the escape sequence, \", on the interior quotes. To print the sentence
She said "Hello!" to me.
you would write
System.out.println("She said \"Hello!\" to me.");
preg_replace('/[^a-zA-Z0-9\s]/', '',$string)
this is using for removing special character only rather than space between the strings.
def find_substring():
s = 'bobobnnnnbobmmmbosssbob'
cnt = 0
for i in range(len(s)):
if s[i:i+3] == 'bob':
cnt += 1
print 'bob found: ' + str(cnt)
return cnt
def main():
print(find_substring())
main()
In this case oldDTE is null, so when you try to access oldDTE.Value the InvalidOperationException is thrown since there is no value. In your example you can simply do:
this.MyDateTime = newDT.MyDateTime;
I'll throw this out there and then duck. The usual reason to check if a file exists is to avoid an error when attempting to open it. How about using the error handler to deal with that:
Function openFileTest(filePathName As String, ByRef wkBook As Workbook, _
errorHandlingMethod As Long) As Boolean
'Returns True if filePathName is successfully opened,
' False otherwise.
Dim errorNum As Long
'***************************************************************************
' Open the file or determine that it doesn't exist.
On Error Resume Next:
Set wkBook = Workbooks.Open(fileName:=filePathName)
If Err.Number <> 0 Then
errorNum = Err.Number
'Error while attempting to open the file. Maybe it doesn't exist?
If Err.Number = 1004 Then
'***************************************************************************
'File doesn't exist.
'Better clear the error and point to the error handler before moving on.
Err.Clear
On Error GoTo OPENFILETEST_FAIL:
'[Clever code here to cope with non-existant file]
'...
'If the problem could not be resolved, invoke the error handler.
Err.Raise errorNum
Else
'No idea what the error is, but it's not due to a non-existant file
'Invoke the error handler.
Err.Clear
On Error GoTo OPENFILETEST_FAIL:
Err.Raise errorNum
End If
End If
'Either the file was successfully opened or the problem was resolved.
openFileTest = True
Exit Function
OPENFILETEST_FAIL:
errorNum = Err.Number
'Presumabley the problem is not a non-existant file, so it's
'some other error. Not sure what this would be, so...
If errorHandlingMethod < 2 Then
'The easy out is to clear the error, reset to the default error handler,
'and raise the error number again.
'This will immediately cause the code to terminate with VBA's standard
'run time error Message box:
errorNum = Err.Number
Err.Clear
On Error GoTo 0
Err.Raise errorNum
Exit Function
ElseIf errorHandlingMethod = 2 Then
'Easier debugging, generate a more informative message box, then terminate:
MsgBox "" _
& "Error while opening workbook." _
& "PathName: " & filePathName & vbCrLf _
& "Error " & errorNum & ": " & Err.Description & vbCrLf _
, vbExclamation _
, "Failure in function OpenFile(), IO Module"
End
Else
'The calling function is ok with a false result. That is the point
'of returning a boolean, after all.
openFileTest = False
Exit Function
End If
End Function 'openFileTest()
What output (exactly) does dir myfile.txt
give in the current directory? What happens if you set the delimiters?
FOR /f "tokens=1,2* delims= " %%a in ('dir myfile.txt^|find /i " myfile.txt"') DO SET fileDate=%%a
(note the space after delims=
)
(to make life easier, you can do this from the command line by replacing %%a
with %a
)
This really works, I spent a lot of time trying multiple variants.
import smtplib
from email.mime.text import MIMEText
s = smtplib.SMTP('smtp.uk.xensource.com')
s.set_debuglevel(1)
msg = MIMEText("""body""")
sender = '[email protected]'
recipients = ['[email protected]', '[email protected]']
msg['Subject'] = "subject line"
msg['From'] = sender
msg['To'] = ", ".join(recipients)
s.sendmail(sender, recipients, msg.as_string())
Use Promises.
var mongoose = require('mongoose');
mongoose.connect('your MongoDB connection string');
var conn = mongoose.connection;
var promises = ['aaa', 'bbb', 'ccc'].map(function(name) {
return new Promise(function(resolve, reject) {
var collection = conn.collection(name);
collection.drop(function(err) {
if (err) { return reject(err); }
console.log('dropped ' + name);
resolve();
});
});
});
Promise.all(promises)
.then(function() { console.log('all dropped)'); })
.catch(console.error);
This drops each collection, printing “dropped” after each one, and then prints “all dropped” when complete. If an error occurs, it is displayed to stderr
.
Use Q promises or Bluebird promises.
With Q:
var Q = require('q');
var mongoose = require('mongoose');
mongoose.connect('your MongoDB connection string');
var conn = mongoose.connection;
var promises = ['aaa','bbb','ccc'].map(function(name){
var collection = conn.collection(name);
return Q.ninvoke(collection, 'drop')
.then(function() { console.log('dropped ' + name); });
});
Q.all(promises)
.then(function() { console.log('all dropped'); })
.fail(console.error);
With Bluebird:
var Promise = require('bluebird');
var mongoose = Promise.promisifyAll(require('mongoose'));
mongoose.connect('your MongoDB connection string');
var conn = mongoose.connection;
var promises = ['aaa', 'bbb', 'ccc'].map(function(name) {
return conn.collection(name).dropAsync().then(function() {
console.log('dropped ' + name);
});
});
Promise.all(promises)
.then(function() { console.log('all dropped'); })
.error(console.error);
As Johannes Gorset pointed out, the post by Thomas Ptacek from Matasano Security explains why simple, general-purpose hashing functions such as MD5, SHA1, SHA256 and SHA512 are poor password hashing choices.
Why? They are too fast--you can calculate at least 1,000,000 MD5 hashes a second per core with a modern computer, so brute force is feasible against most passwords people use. And that's much less than a GPU-based cracking server cluster!
Salting without key stretching only means that you cannot precompute the rainbow table, you need to build it ad hoc for that specific salt. But it won't really make things that much harder.
User @Will says:
Everyone is talking about this like they can be hacked over the internet. As already stated, limiting attempts makes it impossible to crack a password over the Internet and has nothing to do with the hash.
They don't need to. Apparently, in the case of LinkedIn they used the common SQL injection vulnerability to get the login DB table and cracked millions of passwords offline.
Then he goes back to the offline attack scenario:
The security really comes into play when the entire database is compromised and a hacker can then perform 100 million password attempts per second against the md5 hash. SHA512 is about 10,000 times slower.
No, SHA512 is not 10000 times slower than MD5--it only takes about twice as much. Crypt/SHA512, on the other hand, is a very different beast that, like its BCrypt counterpart, performs key stretching, producing a very different hash with a random salt built-in and will take anything between 500 and 999999 times as much to compute (stretching is tunable).
SHA512 => aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d
Crypt/SHA512 => $6$rounds=5000$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21
So the choice for PHP is either Crypt/Blowfish (BCrypt), Crypt/SHA256 or Crypt/SHA512. Or at least Crypt/MD5 (PHK). See www.php.net/manual/en/function.crypt.php
A perfect example of this is:
$ npm install typescript --save-dev
In this case, you'd want to have Typescript (a javascript-parseable coding language) available for development, but once the app is deployed, it is no longer necessary, as all of the code has been transpiled to javascript. As such, it would make no sense to include it in the published app. Indeed, it would only take up space and increase download times.
There are pesky edge conditions where a point is exactly on the common edge of two adjacent triangles. The point cannot be in both, or neither of the triangles. You need an arbitrary but consistent way of assigning the point. For example, draw a horizontal line through the point. If the line intersects with the other side of the triangle on the right, the point is treated as though it is inside the triangle. If the intersection is on the left, the point is outside.
If the line on which the point lies is horizontal, use above/below.
If the point is on the common vertex of multiple triangles, use the triangle with whose center the point forms the smallest angle.
More fun: three points can be in a straight line (zero degrees), for example (0,0) - (0,10) - (0,5). In a triangulating algorithm, the "ear" (0,10) must be lopped off, the "triangle" generated being the degenerate case of a straight line.
The direct replacement is if
/elif
/else
.
However, in many cases there are better ways to do it in Python. See "Replacements for switch statement in Python?".
if setting height to 100% doesn't work, try min-height=100% for div. You still have to set the html tag.
html {
height: 100%;
margin: 0px;
padding: 0px;
position: relative;
}
#fullHeight{
width: 450px;
**min-height: 100%;**
background-color: blue;
}
$('#serialize').click(function () {_x000D_
$('#out').text(_x000D_
$('form').serialize()_x000D_
);_x000D_
});_x000D_
_x000D_
$('#exclude').change(function () {_x000D_
if ($(this).is(':checked')) {_x000D_
$('[name=age]').attr('form', 'fake-form-id');_x000D_
} else {_x000D_
$('[name=age]').removeAttr('form'); _x000D_
}_x000D_
_x000D_
$('#serialize').click();_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<form action="/">_x000D_
<input type="text" value="John" name="name">_x000D_
<input type="number" value="100" name="age">_x000D_
</form>_x000D_
_x000D_
<input type="button" value="serialize" id="serialize">_x000D_
<label for="exclude"> _x000D_
<input type="checkbox" value="exclude age" id="exclude">_x000D_
exlude age_x000D_
</label>_x000D_
_x000D_
<pre id="out"></pre>
_x000D_
To get started , just to view something in Recycler view
recycler view adapter can be something like this.
class CustomAdapter: RecyclerView.Adapter<CustomAdapter.ViewHolder>() {
var data = listOf<String>()
set(value) {
field = value
notifyDataSetChanged()
}
override fun getItemCount() =data.size
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.txt.text= data[position]
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
return ViewHolder(
LayoutInflater.from(parent.context).inflate(R.layout.item_view, parent, false)
)
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
val txt: TextView = itemView.findViewById(R.id.item_text_view)
}
}
and to attach the adapter to the recycler view and to attach data to adapter
val view = findViewById<RecyclerView>(R.id.recycler_view)
val adapter = CustomAdapter()
val data = listOf("text1", "text2", "text3")
adapter.data = data
view.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)
view.adapter = adapter
So you want to know if one string contains two other strings?
You could use this extension which also allows to specify the comparison:
public static bool ContainsAll(this string text, StringComparison comparison = StringComparison.CurrentCulture, params string[]parts)
{
return parts.All(p => text.IndexOf(p, comparison) > -1);
}
Use it in this way (you can also omit the StringComparison
):
bool containsAll = d.ContainsAll(StringComparison.OrdinalIgnoreCase, a, b);
Recently I tried using Andrew Kennan's answer and it didn't work for me for some reason. I used this instead and it worked (note: writing the namespace might be required).
if (typeof(someObject).GetInterface("MyNamespace.IMyInterface") != null)
In-case if someone wants a little dynamic search.
let searchInArray=(searchQuery, array, objectKey=null)=>{
return array.filter(d=>{
let data =objectKey? d[objectKey] : d //Incase If It's Array Of Objects.
let dataWords= typeof data=="string" && data?.split(" ")?.map(b=>b&&b.toLowerCase().trim()).filter(b=>b)
let searchWords = typeof searchQuery=="string"&&searchQuery?.split(" ").map(b=>b&&b.toLowerCase().trim()).filter(b=>b)
let matchingWords = searchWords.filter(word=>dataWords.includes(word))
return matchingWords.length
})
}
For an Array of strings:
let arrayOfStr = [
"Search for words",
"inside an array",
"dynamic searching",
"match rate 90%"
]
searchInArray("dynamic search", arrayOfStr)
//Results: [ "Search for words", "dynamic searching" ]
For an Array of Objects:
let arrayOfObject = [
{
"address": "Karachi Pakistan"
},
{
"address": "UK London"
},
{
"address": "Pakistan Lahore"
}
]
searchInArray("Pakistan", arrayOfObject,"address")
//Results: [ { "address": "Karachi Pakistan" }, { "address": "Pakistan Lahore" } ]
Send a SIGTERM or a SIGKILL to it:
http://en.wikipedia.org/wiki/SIGKILL
http://en.wikipedia.org/wiki/SIGTERM
SIGTERM is polite and lets the process clean up before it goes, whereas, SIGKILL is for when it won't listen >:)
Example from the shell (man page: http://unixhelp.ed.ac.uk/CGI/man-cgi?kill )
kill -9 pid
In C, you can do the same thing using the kill syscall:
kill(pid, SIGKILL);
See the following man page: http://linux.die.net/man/2/kill
Use a FULL OUTER JOIN:
select
a.col_a,
a.col_b,
b.col_c
from
(select col_a,col_bfrom tab1) a
join
(select col_a,col_cfrom tab2) b
on a.col_a= b.col_a
This issue is got resolved after adding network service role.
CERTIFICATE ISSUES
Error :Keyset does not exist means System might not have access to private key
Error :Enveloped data …
Step 1:Install certificate in local machine not in current user store
Step 2:Run certificate manager
Step 3:Find your certificate in the local machine tab and right click manage privatekey and check in allowed personnel following have been added:
a>Administrators
b>yourself
c>'Network service'
And then provide respective permissions.
## You need to add 'Network Service' and then it will start working.
Upgrade to phpMyAdmin 4.8.3. this solves the PHP 7.2 compatibility issues
I've ended up here looking for "how to mock a function based on input arguments" and I finally solved this creating a simple aux function:
def mock_responses(responses, default_response=None):
return lambda input: responses[input] if input in responses else default_response
Now:
my_mock.foo.side_effect = mock_responses(
{
'x': 42,
'y': [1,2,3]
})
my_mock.goo.side_effect = mock_responses(
{
'hello': 'world'
},
default_response='hi')
...
my_mock.foo('x') # => 42
my_mock.foo('y') # => [1,2,3]
my_mock.foo('unknown') # => None
my_mock.goo('hello') # => 'world'
my_mock.goo('ey') # => 'hi'
Hope this will help someone!
Move the jar files from your classpath to web-inf/lib, and run a new tomcat server.
Why use LEN so you have 2 string functions? All you need is character 5 on...
...SUBSTRING (Code1, 5, 8000)...
Here my regexp for validate string:
^\"([^\"\\]*|\\(["\\\/bfnrt]{1}|u[a-f0-9]{4}))*\"$
Was written usign original syntax diagramm.
AngularJS remembers the value and compares it to a previous value. This is basic dirty-checking. If there is a change in value, then it fires the change event.
The $apply()
method, which is what you call when you are transitioning from a non-AngularJS world into an AngularJS world, calls $digest()
. A digest is just plain old dirty-checking. It works on all browsers and is totally predictable.
To contrast dirty-checking (AngularJS) vs change listeners (KnockoutJS and Backbone.js): While dirty-checking may seem simple, and even inefficient (I will address that later), it turns out that it is semantically correct all the time, while change listeners have lots of weird corner cases and need things like dependency tracking to make it more semantically correct. KnockoutJS dependency tracking is a clever feature for a problem which AngularJS does not have.
So it may seem that we are slow, since dirty-checking is inefficient. This is where we need to look at real numbers rather than just have theoretical arguments, but first let's define some constraints.
Humans are:
Slow — Anything faster than 50 ms is imperceptible to humans and thus can be considered as "instant".
Limited — You can't really show more than about 2000 pieces of information to a human on a single page. Anything more than that is really bad UI, and humans can't process this anyway.
So the real question is this: How many comparisons can you do on a browser in 50 ms? This is a hard question to answer as many factors come into play, but here is a test case: http://jsperf.com/angularjs-digest/6 which creates 10,000 watchers. On a modern browser this takes just under 6 ms. On Internet Explorer 8 it takes about 40 ms. As you can see, this is not an issue even on slow browsers these days. There is a caveat: The comparisons need to be simple to fit into the time limit... Unfortunately it is way too easy to add a slow comparison into AngularJS, so it is easy to build slow applications when you don't know what you are doing. But we hope to have an answer by providing an instrumentation module, which would show you which are the slow comparisons.
It turns out that video games and GPUs use the dirty-checking approach, specifically because it is consistent. As long as they get over the monitor refresh rate (typically 50-60 Hz, or every 16.6-20 ms), any performance over that is a waste, so you're better off drawing more stuff, than getting FPS higher.
Pretty old question... but I had the same problem today and solved with script, a little bit slow and complex but worked. I did this:
Let's start from the source DB (SQL 2014) right click on the database you would like to backup -> Generate Scripts -> "Script entire database and all database objet" (or u can select only some table if u want) -> the most important step is in the "Set Scripting Options" tab, here you have to click on "Advanced" and look for the option "Script for Server version" and in my case I could select everything from SQL 2005, also pay attention to the option "Types of data to script" I advice "Schema and data" and also Script Triggers and Script Full-text Indexes (if you need, it's false by default) and finally click ok and next. Should look like this:
Now transfer your generated script into your SQL 2008, open it and last Important Step: You must change mdf and ldf location!!
That's all folks, happy F5!! :D
Finally found the answer!! Go to References --> right cilck on dll file that causing the problem --> select the properties --> check the version --> match the version in properties to web config
<dependentAssembly>
<assemblyIdentity name="YourDllFile" publicKeyToken="2780ccd10d57b246" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-YourDllFileVersion" newVersion="YourDllFileVersion" />
</dependentAssembly>
The most flexible approach would be using this method
Arr::sortByKeys(array $array, $keys, bool $assoc = true): array
here's why:
You can sort by any key (also nested like 'key1.key2.key3'
or ['k1', 'k2', 'k3']
)
Works both on associative and not associative arrays ($assoc
flag)
It doesn't use reference - return new sorted array
In your case it would be as simple as:
$sortedArray = Arr::sortByKeys($array, 'order');
This method is a part of this library.
Without external variables:
$('.element').bind('mousewheel', function(e, d) {
if((this.scrollTop === (this.scrollHeight - this.offsetHeight) && d < 0)
|| (this.scrollTop === 0 && d > 0)) {
e.preventDefault();
}
});
Yes:
#include <iostream>
#include <functional>
struct null_ref_t {
template <typename T>
operator T&() {
union TypeSafetyBreaker {
T *ptr;
// see https://stackoverflow.com/questions/38691282/use-of-union-with-reference
std::reference_wrapper<T> ref;
};
TypeSafetyBreaker ptr = {.ptr = nullptr};
// unwrap the reference
return ptr.ref.get();
}
};
null_ref_t nullref;
int main() {
int &a = nullref;
// Segmentation fault
a = 4;
return 0;
}
So Why not use powershell to create the list of source files for you. Take a look at this script
param (
[Parameter(Mandatory=$True)]
[string]$root
)
if (-not (Test-Path -Path $root)) {
throw "Error directory does not exist"
}
#get the full path of the root
$rootDir = get-item -Path $root
$fp=$rootDir.FullName;
$files = Get-ChildItem -Path $root -Recurse -File |
Where-Object { ".cpp",".cxx",".cc",".h" -contains $_.Extension} |
Foreach {$_.FullName.replace("${fp}\","").replace("\","/")}
$CMakeExpr = "set(SOURCES "
foreach($file in $files){
$CMakeExpr+= """$file"" " ;
}
$CMakeExpr+=")"
return $CMakeExpr;
Suppose you have a folder with this structure
C:\Workspace\A
--a.cpp
C:\Workspace\B
--b.cpp
Now save this file as "generateSourceList.ps1" for example, and run the script as
~>./generateSourceList.ps1 -root "C:\Workspace" > out.txt
out.txt file will contain
set(SOURCE "A/a.cpp" "B/b.cpp")
While you can do
value = d.values()[index]
It should be faster to do
value = next( v for i, v in enumerate(d.itervalues()) if i == index )
edit: I just timed it using a dict of len 100,000,000 checking for the index at the very end, and the 1st/values() version took 169 seconds whereas the 2nd/next() version took 32 seconds.
Also, note that this assumes that your index is not negative
I typically don't want to display a UTC date since customers don't like doing the conversion in their head. To display a local ISO date, I use the function:
function toLocalIsoString(date, includeSeconds) {
function pad(n) { return n < 10 ? '0' + n : n }
var localIsoString = date.getFullYear() + '-'
+ pad(date.getMonth() + 1) + '-'
+ pad(date.getDate()) + 'T'
+ pad(date.getHours()) + ':'
+ pad(date.getMinutes()) + ':'
+ pad(date.getSeconds());
if(date.getTimezoneOffset() == 0) localIsoString += 'Z';
return localIsoString;
};
The function above omits time zone offset information (except if local time happens to be UTC), so I use the function below to show the local offset in a single location. You can also append its output to results from the above function if you wish to show the offset in each and every time:
function getOffsetFromUTC() {
var offset = new Date().getTimezoneOffset();
return ((offset < 0 ? '+' : '-')
+ pad(Math.abs(offset / 60), 2)
+ ':'
+ pad(Math.abs(offset % 60), 2))
};
toLocalIsoString
uses pad
. If needed, it works like nearly any pad function, but for the sake of completeness this is what I use:
// Pad a number to length using padChar
function pad(number, length, padChar) {
if (typeof length === 'undefined') length = 2;
if (typeof padChar === 'undefined') padChar = '0';
var str = "" + number;
while (str.length < length) {
str = padChar + str;
}
return str;
}
There is also an 'E' status
E = File existed before update
This can happen if you have manually created a folder that would have been created by performing an update.
The error usually means that the port you are trying to open is being already used by another application. Try using netstat to see which ports are open and then use an available port.
Also check if you are binding to the right ip address (I am assuming it would be localhost)
This is the only proposed method who actually selects the whole row, not only the max(id) field. It uses a subquery
SELECT * FROM permlog WHERE id = ( SELECT MAX( id ) FROM permlog )
.push() will add elements to the end of an array.
Use .unshift() if need to add some element to the beginning of array i.e:
items.unshift({'id':5});
Demo:
items = [{'id': 1}, {'id': 2}, {'id': 3}, {'id': 4}];_x000D_
items.unshift({'id': 0});_x000D_
console.log(items);
_x000D_
And use .splice() in case you want to add object at a particular index i.e:
items.splice(2, 0, {'id':5});
// ^ Given object will be placed at index 2...
Demo:
items = [{'id': 1}, {'id': 2}, {'id': 3}, {'id': 4}];_x000D_
items.splice(2, 0, {'id': 2.5});_x000D_
console.log(items);
_x000D_
You might also try giving the full path to the binary you're trying to run. That solved my problem when trying to use ImageMagick
.
Once you have a JArray you can treat it just like any other Enumerable object, and using linq you can access them, check them, verify them, and select them.
var str = @"[1, 2, 3]";
var jArray = JArray.Parse(str);
Console.WriteLine(String.Join("-", jArray.Where(i => (int)i > 1).Select(i => i.ToString())));
I had this error; it happened somewhat spontaneously, and the page would halt in the browser in the middle of an HTML tag (not a section of code). It was baffling!
Turns out, I let a variable go out of scope and the garbage collector swept it away and then I tried to use it. Thus the seemingly-random timing.
To give a more concrete example... Inside a method, I had something like:
Foo[] foos = new Foo[20];
// fill up the "foos" array...
return Arrays.asList(foos); // this returns type List<Foo>
Now in my JSP page, I called that method and used the List object returned by it. The List object is backed by that "foos" array; but, the array went out of scope when I returned from the method (since it is a local variable). So shortly after returning, the garbage collector swept away the "foos" array, and my access to the List caused a NullPointerException since its underlying array was now wiped away.
I actually wondered, as I wrote the above method, whether that would happen.
The even deeper underlying problem was premature optimization. I wanted a list, but I knew I would have exactly 20 elements, so I figured I'd try to be more efficient than new ArrayList<Foo>(20)
which only sets an initial size of 20 but can possibly be less efficient than the method I used. So of course, to fix it, I just created my ArrayList, filled it up, and returned it. No more strange error.
You need to typecast the input. try using the following
int input = Convert.ToInt32(Console.ReadLine());
It will throw exception if the value is non-numeric.
I understand that the above is a quick one. I would like to improve my answer:
String input = Console.ReadLine();
int selectedOption;
if(int.TryParse(input, out selectedOption))
{
switch(selectedOption)
{
case 1:
//your code here.
break;
case 2:
//another one.
break;
//. and so on, default..
}
}
else
{
//print error indicating non-numeric input is unsupported or something more meaningful.
}
That data looks like it is in JSON format.
You can use this JSON implementation for Ruby to extract it.
I faced the same issue and solve after several trial and error. In the /etc/ssh/ssh_config, set
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys
PasswordAuthentication no
AuthenticationMethods publickey
then, open putty. In the "Saved Sessions", enter the server IP, go through the path Connection->SSH->Auth->Browse on the left panel to search your private key and open it. Last but not least, go back to Session of putty on the left panel and you can see the server IP address is still in the field, "Saved Sessions", then click "Save", which is the critical step. It will let the user login without password any more. Have fun,
I was trying to fetch table meta data, but had the following error:
Using:
String JDBC_URL = "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1";
DatabaseMetaData metaData = connection.getMetaData();
...
metaData.getColumns(...);
returned an empty ResultSet.
But using the following URL instead it worked properly:
String JDBC_URL = "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DATABASE_TO_UPPER=false";
There was a need to specify: DATABASE_TO_UPPER=false
You can have two methods with the same arguments and different return types only if one of the methods is inherited and the return types are compatible.
For example:
public class A
{
Object foo() { return null; }
}
public class B
extends A
{
String foo() { return null; }
}
I've had the exact same experience as Eric at my last position. Now in my new job, I'm going through the same process I performed at my last job... rebuilding all their AMIs for EBS backed instances - and possibly as 32bit machines (cheaper - but can't use same AMI on 32 and 64 machines).
EBS backed instances launch quickly enough that you can begin to make use of the Amazon AutoScaling API which lets you use CloudWatch metrics to trigger the launch of additional instances and register them to the ELB (Elastic Load Balancer), and also to shut them down when no longer required.
This kind of dynamic autoscaling is what AWS is all about - where the real savings in IT infrastructure can come into play. It's pretty much impossible to do autoscaling right with the old s3 "InstanceStore"-backed instances.
In Excel, you can set a Range.NumberFormat
to any string as you would find in the "Custom" format selection. Essentially, you have two choices:
If json object key/name contains dot......! like
var myJson = {"my.name":"vikas","my.age":27}
Than you can access like
myJson["my.name"]
myJson["my.age"]
If you know you don't have duplicate keys, or you want values in map2
to overwrite values from map1
for duplicate keys, you can just write
map3 = new HashMap<>(map1);
map3.putAll(map2);
If you need more control over how values are combined, you can use Map.merge
, added in Java 8, which uses a user-provided BiFunction
to merge values for duplicate keys. merge
operates on individual keys and values, so you'll need to use a loop or Map.forEach
. Here we concatenate strings for duplicate keys:
map3 = new HashMap<>(map1);
for (Map.Entry<String, String> e : map2.entrySet())
map3.merge(e.getKey(), e.getValue(), String::concat);
//or instead of the above loop
map2.forEach((k, v) -> map3.merge(k, v, String::concat));
If you know you don't have duplicate keys and want to enforce it, you can use a merge function that throws an AssertionError
:
map2.forEach((k, v) ->
map3.merge(k, v, (v1, v2) ->
{throw new AssertionError("duplicate values for key: "+k);}));
Taking a step back from this specific question, the Java 8 streams library provides toMap
and groupingBy
Collectors. If you're repeatedly merging maps in a loop, you may be able to restructure your computation to use streams, which can both clarify your code and enable easy parallelism using a parallel stream and concurrent collector.
You can do a simple wildcard mach without RegEx using a Visual Basic function called LikeString.
using Microsoft.VisualBasic;
using Microsoft.VisualBasic.CompilerServices;
if (Operators.LikeString("This is just a test", "*just*", CompareMethod.Text))
{
Console.WriteLine("This matched!");
}
If you use CompareMethod.Text
it will compare case-insensitive. For case-sensitive comparison, you can use CompareMethod.Binary
.
More info here: http://www.henrikbrinch.dk/Blog/2012/02/14/Wildcard-matching-in-C
You can use this code:
var vid = document.getElementById("video1");
function slowPlaySpeed() {
vid.playbackRate = 0.5;
}
function normalPlaySpeed() {
vid.playbackRate = 1;
}
function fastPlaySpeed() {
vid.playbackRate = 2;
}
If you can, go for JSON. Android comes with the complete org.json package
Heroes of Might and Magic V used modified Silent Storm engine. I think you can find many good engines listed in wikipedia: Lua-scriptable game engines
I basically like Anders' approach as it is very general. Here's a version that puts the categorizer first (to match filter syntax) and uses a defaultdict (assumed imported).
def categorize(func, seq):
"""Return mapping from categories to lists
of categorized items.
"""
d = defaultdict(list)
for item in seq:
d[func(item)].append(item)
return d
eFox's answer worked for a single project, but not when I was referencing a module from another one (the pom.xml were still stored in my .m2
with the property instead of the version).
However, it works if you combine it with the flatten-maven-plugin
, since it generates the poms with the correct version, not the property.
The only option I changed in the plug-in definition is the outputDirectory
, it's empty by default, but I prefer to have it in target
, which is set in my .gitignore
configuration:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>flatten-maven-plugin</artifactId>
<version>1.0.1</version>
<configuration>
<updatePomFile>true</updatePomFile>
<outputDirectory>target</outputDirectory>
</configuration>
<executions>
<execution>
<id>flatten</id>
<phase>process-resources</phase>
<goals>
<goal>flatten</goal>
</goals>
</execution>
</executions>
</plugin>
The plug-in configuration goes in the parent pom.xml
In this case, you may want to check if element exists in current DOM
if you want to check if element exist in DOM tree (is attached to DOM), you can use:
var data = $('#data_1');
if(jQuery.contains(document.documentElement, data[0])){
// #data_1 element attached to DOM
} else {
// is not attached to DOM
}
As for your first question: that code is perfectly fine and should work if item
equals one of the elements inside myList
. Maybe you try to find a string that does not exactly match one of the items or maybe you are using a float value which suffers from inaccuracy.
As for your second question: There's actually several possible ways if "finding" things in lists.
This is the use case you describe: Checking whether something is inside a list or not. As you know, you can use the in
operator for that:
3 in [1, 2, 3] # => True
That is, finding all elements in a sequence that meet a certain condition. You can use list comprehension or generator expressions for that:
matches = [x for x in lst if fulfills_some_condition(x)]
matches = (x for x in lst if x > 6)
The latter will return a generator which you can imagine as a sort of lazy list that will only be built as soon as you iterate through it. By the way, the first one is exactly equivalent to
matches = filter(fulfills_some_condition, lst)
in Python 2. Here you can see higher-order functions at work. In Python 3, filter
doesn't return a list, but a generator-like object.
If you only want the first thing that matches a condition (but you don't know what it is yet), it's fine to use a for loop (possibly using the else
clause as well, which is not really well-known). You can also use
next(x for x in lst if ...)
which will return the first match or raise a StopIteration
if none is found. Alternatively, you can use
next((x for x in lst if ...), [default value])
For lists, there's also the index
method that can sometimes be useful if you want to know where a certain element is in the list:
[1,2,3].index(2) # => 1
[1,2,3].index(4) # => ValueError
However, note that if you have duplicates, .index
always returns the lowest index:......
[1,2,3,2].index(2) # => 1
If there are duplicates and you want all the indexes then you can use enumerate()
instead:
[i for i,x in enumerate([1,2,3,2]) if x==2] # => [1, 3]
Firstly said, I try to force all my users to use Chrome when printing because other browsers create different layouts.
An answer from this question recommends:
@page {
size: 210mm 297mm;
/* Chrome sets own margins, we change these printer settings */
margin: 27mm 16mm 27mm 16mm;
}
However, I ended up using this CSS for all my pages to be printed:
@media print
{
@page {
size: A4; /* DIN A4 standard, Europe */
margin:0;
}
html, body {
width: 210mm;
/* height: 297mm; */
height: 282mm;
font-size: 11px;
background: #FFF;
overflow:visible;
}
body {
padding-top:15mm;
}
}
Special case: Long Tables
When I needed to print a table over several pages, the margin:0
with the @page
was leading to bleeding edges:
I could solve this thanks to this answer with:
table { page-break-inside:auto }
tr { page-break-inside:avoid; page-break-after:auto }
thead { display:table-header-group; }
tfoot { display:table-footer-group; }
Plus setting the top-bottom-margins for @page
:
@page {
size: auto;
margin: 20mm 0 10mm 0;
}
body {
margin:0;
padding:0;
}
Result:
I would rather prefer a solution that is concise and works with all browser. For now, I hope the information above can help some developers with similar issues.
In my and possibly @BIOHAZARD case it was nginx proxy timeout
. In default it's 60
sec without activity in socket
I changed it to 24h in nginx
and it resolved problem
proxy_read_timeout 86400s;
proxy_send_timeout 86400s;
/* START --- scroll till anchor */
(function($) {
$.fn.goTo = function() {
var top_menu_height=$('#div_menu_header').height() + 5 ;
//alert ( 'top_menu_height is:' + top_menu_height );
$('html, body').animate({
scrollTop: (-1)*top_menu_height + $(this).offset().top + 'px'
}, 500);
return this; // for chaining...
}
})(jQuery);
$(document).ready(function(){
var url = document.URL, idx = url.indexOf("#") ;
var hash = idx != -1 ? url.substring(idx+1) : "";
$(window).load(function(){
// Remove the # from the hash, as different browsers may or may not include it
var anchor_to_scroll_to = location.hash.replace('#','');
if ( anchor_to_scroll_to != '' ) {
anchor_to_scroll_to = '#' + anchor_to_scroll_to ;
$(anchor_to_scroll_to).goTo();
}
});
});
/* STOP --- scroll till anchror */
Manifest.MF contains information about the files contained in the JAR file.
Whenever a JAR file is created a default manifest.mf file is created inside META-INF folder and it contains the default entries like this:
Manifest-Version: 1.0
Created-By: 1.7.0_06 (Oracle Corporation)
These are entries as “header:value” pairs. The first one specifies the manifest version and second one specifies the JDK version with which the JAR file is created.
Main-Class header: When a JAR file is used to bundle an application in a package, we need to specify the class serving an entry point of the application. We provide this information using ‘Main-Class’ header of the manifest file,
Main-Class: {fully qualified classname}
The ‘Main-Class’ value here is the class having main method. After specifying this entry we can execute the JAR file to run the application.
Class-Path header: Most of the times we need to access the other JAR files from the classes packaged inside application’s JAR file. This can be done by providing their fully qualified paths in the manifest file using ‘Class-Path’ header,
Class-Path: {jar1-name jar2-name directory-name/jar3-name}
This header can be used to specify the external JAR files on the same local network and not inside the current JAR.
Package version related headers: When the JAR file is used for package versioning the following headers are used as specified by the Java language specification:
Headers in a manifest
Header | Definition
-------------------------------------------------------------------
Name | The name of the specification.
Specification-Title | The title of the specification.
Specification-Version | The version of the specification.
Specification-Vendor | The vendor of the specification.
Implementation-Title | The title of the implementation.
Implementation-Version | The build number of the implementation.
Implementation-Vendor | The vendor of the implementation.
Package sealing related headers:
We can also specify if any particular packages inside a JAR file should be sealed meaning all the classes defined in that package must be archived in the same JAR file. This can be specified with the help of ‘Sealed’ header,
Name: {package/some-package/} Sealed:true
Here, the package name must end with ‘/’.
Enhancing security with manifest files:
We can use manifest files entries to ensure the security of the web application or applet it packages with the different attributes as ‘Permissions’, ‘Codebae’, ‘Application-Name’, ‘Trusted-Only’ and many more.
META-INF folder:
This folder is where the manifest file resides. Also, it can contain more files containing meta data about the application. For example, in an EJB module JAR file, this folder contains the EJB deployment descriptor for the EJB module along with the manifest file for the JAR. Also, it contains the xml file containing mapping of an abstract EJB references to concrete container resources of the application server on which it will be run.
Reference:
https://docs.oracle.com/javase/tutorial/deployment/jar/manifestindex.html
To expand on Johan's answer, if the part_num column in the sub-select can contain null values then the query will break.
To correct this, add a null check...
SELECT pm.id FROM r2r.partmaster pm
WHERE pm.id NOT IN
(SELECT pd.part_num FROM wpsapi4.product_details pd
where pd.part_num is not null)
Although using const
to define functions seems like a hack, but it comes with some great advantages that make it superior (in my opinion)
It makes the function immutable, so you don't have to worry about that function being changed by some other piece of code.
You can use fat arrow syntax, which is shorter & cleaner.
Using arrow functions takes care of this
binding for you.
example with function
// define a function_x000D_
function add(x, y) { return x + y; }_x000D_
_x000D_
// use it_x000D_
console.log(add(1, 2)); // 3_x000D_
_x000D_
// oops, someone mutated your function_x000D_
add = function (x, y) { return x - y; };_x000D_
_x000D_
// now this is not what you expected_x000D_
console.log(add(1, 2)); // -1
_x000D_
same example with const
// define a function (wow! that is 8 chars shorter)_x000D_
const add = (x, y) => x + y;_x000D_
_x000D_
// use it_x000D_
console.log(add(1, 2)); // 3_x000D_
_x000D_
// someone tries to mutate the function_x000D_
add = (x, y) => x - y; // Uncaught TypeError: Assignment to constant variable._x000D_
// the intruder fails and your function remains unchanged
_x000D_
The legend titles can be labeled by specific aesthetic.
This can be achieved using the guides()
or labs()
functions from ggplot2
(more here and here). It allows you to add guide/legend properties using the aesthetic mapping.
Here's an example using the mtcars
data set and labs()
:
ggplot(mtcars, aes(x=mpg, y=disp, size=hp, col=as.factor(cyl), shape=as.factor(gear))) +
geom_point() +
labs(x="miles per gallon", y="displacement", size="horsepower",
col="# of cylinders", shape="# of gears")
Answering the OP's question using guides()
:
# transforming the data from wide to long
require(reshape2)
dfm <- melt(df, id="TY")
# creating a scatterplot
ggplot(data = dfm, aes(x=TY, y=value, color=variable)) +
geom_point(size=5) +
labs(title="Temperatures\n", x="TY [°C]", y="Txxx") +
scale_color_manual(labels = c("T999", "T888"), values = c("blue", "red")) +
theme_bw() +
guides(color=guide_legend("my title")) # add guide properties by aesthetic
You have to use Iterator
to safely remove element while traversing a map.
Let me summarize all the answers and add some more.
To write to a file from within your script, user file I/O tools that are provided by Python (this is the f=open('file.txt', 'w')
stuff.
If don't want to modify your program, you can use stream redirection (both on windows and on Unix-like systems). This is the python myscript > output.txt
stuff.
If you want to see the output both on your screen and in a log file, and if you are on Unix, and you don't want to modify your program, you may use the tee command (windows version also exists, but I have never used it)
For me this solution worked well to center an input field in a TD:
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha/css/bootstrap.css" rel="stylesheet" />_x000D_
<td style="background:#B3AEB5;">_x000D_
<div class="form-group text-center">_x000D_
<div class="input-group" style="margin:auto;">_x000D_
<input type="month" name="p2" value="test">_x000D_
</div>_x000D_
</div>_x000D_
</td>
_x000D_
Casting to an int implicitly drops any decimal. No need to call Math.floor() (assuming positive numbers)
Simply typecast with (int), e.g.:
System.out.println((int)(99.9999)); // Prints 99
This being said, it does have a different behavior from Math.floor
which rounds towards negative infinity (@Chris Wong)
Entity Framework – Use a Guid as the primary key
Using a Guid as your tables primary key, when using Entity Framework, requires a little more effort than when using a integer. The setup process is straightforward, after you’ve read/been shown how to do it.
The process is slightly different for the Code First and Database First approaches. This post discusses both techniques.
Code First
Using a Guid as the primary key when taking the code first approach is simple. When creating your entity, add the DatabaseGenerated attribute to your primary key property, as shown below;
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid Id { get; set; }
Entity framework will create the column as you would expect, with a primary key and uniqueidentifier data type.
codefirst-defaultvalue
Also notice, very important, that the default value on the column has been set to (newsequentialid())
. This generates a new sequential (continuous) Guid for each row. If you were so inclined, you could change this to newid()
), which would result in a completely random Guid for each new row. This will be cleared each time your database gets dropped and re-created, so this works better when taking the Database First approach.
Database First
The database first approach follows a similar line to the code first approach, but you’ll have to manually edit your model to make it work.
Ensure that you edit the primary key column and add the (newsequentialid()) or (newid()) function as the default value before doing anything.
Next, open you EDMX diagram, select the appropriate property and open the properties window. Ensure that StoreGeneratedPattern is set to identity.
databasefirst-model
No need to give your entity an ID in your code, that will be populated for you automatically after the entity has been commited to the database;
using (ApplicationDbContext context = new ApplicationDbContext())
{
var person = new Person
{
FirstName = "Random",
LastName = "Person";
};
context.People.Add(person);
context.SaveChanges();
Console.WriteLine(person.Id);
}
Important Note: Your Guid field MUST be a primary key, or this does not work. Entity Framework will give you a rather cryptic error message!
Summary
Guid (Globally Unique Identifiers) can easily be used as primary keys in Entity Framework. A little extra effort is required to do this, depending on which approach you are taking. When using the code first approach, add the DatabaseGenerated attribute to your key field. When taking the Database First approach, explicitly set the StoredGeneratedPattern to Identity on your model.
[1]: https://i.stack.imgur.com/IxGdd.png
[2]: https://i.stack.imgur.com/Qssea.png
The #/
trick works, but adds a history event to the browser. So, clicking back doesn't work as the user may want/expect it to.
$('body').click('a[href="#"]', function(e) {e.preventDefault() });
is the way I went, as it works for already existing content, and any elements added to the DOM after load.
Specifically, I needed to do this in a bootstrap dropdown-menu inside of a .btn-group
(Reference), so I did:
$('body').click('.dropdown-menu li a[href="#"]', function(e) {e.preventDefault() });
This way it was targeted, and didn't affect anything thing else on the page.
Another way is to use calendar.timegm
:
future = datetime.datetime.utcnow() + datetime.timedelta(minutes=5)
return calendar.timegm(future.timetuple())
It's also more portable than %s
flag to strftime
(which doesn't work on Windows).
$date1=date_create("2014-07-02");
$date2=date_create("2013-12-12");
$diff=date_diff($date1,$date2);
(the w3schools example, it works perfect)
This example let may highlight the differ between "at" and "asterix" while we using them. I declared two arrays "fruits" and "vegetables"
fruits=(apple pear plumm peach melon)
vegetables=(carrot tomato cucumber potatoe onion)
printf "Fruits:\t%s\n" "${fruits[*]}"
printf "Fruits:\t%s\n" "${fruits[@]}"
echo + --------------------------------------------- +
printf "Vegetables:\t%s\n" "${vegetables[*]}"
printf "Vegetables:\t%s\n" "${vegetables[@]}"
See the following result the code above:
Fruits: apple pear plumm peach melon
Fruits: apple
Fruits: pear
Fruits: plumm
Fruits: peach
Fruits: melon
+ --------------------------------------------- +
Vegetables: carrot tomato cucumber potatoe onion
Vegetables: carrot
Vegetables: tomato
Vegetables: cucumber
Vegetables: potatoe
Vegetables: onion
First change the array to a string by using implode() function. E.g $number=array(1,2,3,4,5,...);
$stringofnumber=implode("|",$number);
then pass the string to a session. e.g $_SESSION['string']=$stringofnumber;
so when you go to the page where you want to use the array, just explode your string. e.g
$number=explode("|", $_SESSION['string']);
finally number is your array but remember to start array on the of each page.
import re
for i in range(len(myDict.values())):
for j in range(len(myDict.values()[i])):
match=re.search(r'Mary', myDict.values()[i][j])
if match:
print match.group() #Mary
print myDict.keys()[i] #firstName
print myDict.values()[i][j] #Mary-Ann
I tested dkarp's solution with gmail and it was filtered to spam. Use the Reply-To header instead (or in addition, although gmail apparently doesn't need it). Here's how linkedin does it:
Sender: [email protected]
From: John Doe via LinkedIn <[email protected]>
Reply-To: John Doe <[email protected]>
To: My Name <[email protected]>
Once I switched to this format, gmail is no longer filtering my messages as spam.
You have not joined TableD, merely selected the TableD FIELD (dID
) from one of the tables.
Yes you can do it with String.format
:
String result = String.format("%.2f", 10.0 / 3.0);
// result: "3.33"
result = String.format("%.3f", 2.5);
// result: "2.500"
I don't think a message box is the best way to go with this as you would need the VB code running in a loop to check the cell contents, or unless you plan to run the macro manually. In this case I think it would be better to add conditional formatting to the cell to change the background to red (for example) if the value exceeds the upper limit.
You can use the fact that Python concatenates string literals which appear adjacent to each other:
>>> def fun():
... print '{0} Here is a really long ' \
... 'sentence with {1}'.format(3, 5)
I wanted the Number same as I get from database for example.
1) 00100.220000
2) 00123
3) 0000.0000100
So I modified the code as below
$objPHPExcel->getActiveSheet()
->setCellValue('A3', '00100.220000');
$objPHPExcel->getActiveSheet()
->getStyle('A3')
->getNumberFormat()
->setFormatCode('00000.000000');
$objPHPExcel->getActiveSheet()
->setCellValue('A4', '00123');
$objPHPExcel->getActiveSheet()
->getStyle('A4')
->getNumberFormat()
->setFormatCode('00000');
$objPHPExcel->getActiveSheet()
->setCellValue('A5', '0000.0000100');
$objPHPExcel->getActiveSheet()
->getStyle('A5')
->getNumberFormat()
->setFormatCode('0000.0000000');
Android Development Tools (ADT) 9.0.0 (or later) has a feature that allows you to save state of the AVD (emulator), and you can start your emulator instantly. You have to enable this feature while creating a new AVD or you can just create it later by editing the AVD.
Also I have increased the Device RAM Size to 1024 which results in a very fast emulator.
Refer the given below screenshots for more information.
Creating a new AVD with the save snapshot feature.
Launching the emulator from the snapshot.
And for speeding up your emulator you can refer to Speed up your Android Emulator!:
in my case i just changed spring.postgresql.jdbc.url that contained IPV4, i changed it to 127.0.0.1
One issue with your ContentLoader is that internally it operates sequentially. A better pattern is to parallelize the work and then sychronize at the end, so we get
public class PageViewModel : IHandle<SomeMessage>
{
...
public async void Handle(SomeMessage message)
{
ShowLoadingAnimation();
// makes UI very laggy, but still not dead
await this.contentLoader.LoadContentAsync();
HideLoadingAnimation();
}
}
public class ContentLoader
{
public async Task LoadContentAsync()
{
var tasks = new List<Task>();
tasks.Add(DoCpuBoundWorkAsync());
tasks.Add(DoIoBoundWorkAsync());
tasks.Add(DoCpuBoundWorkAsync());
tasks.Add(DoSomeOtherWorkAsync());
await Task.WhenAll(tasks).ConfigureAwait(false);
}
}
Obviously, this doesn't work if any of the tasks require data from other earlier tasks, but should give you better overall throughput for most scenarios.
Following configuration, you need to set:
To open the port 5432 edit your /etc/postgresql/9.1/main/postgresql.conf
and change
# Connection Settings -
listen_addresses = '*' # what IP address(es) to listen on;
In /etc/postgresql/10/main/pg_hba.conf
# IPv4 local connections:
host all all 0.0.0.0/0 md5
Now restart your DBMS
sudo service postgresql restart
Now you can connect with
psql -h hostname(IP) -p port -U username -d database
To add a new cookie, use HttpServletResponse.addCookie(Cookie). The Cookie is pretty much a key value pair taking a name and value as strings on construction.
adpter.notifyDataSetInvalidated();
Try this in onPause()
method of Activity class.
If you disable a form field, this won't be sent when form is submitted.
So if you need a readonly
that works like disabled
but sending values do this :
After any change in readonly properties of an element.
$('select.readonly option:not(:selected)').attr('disabled',true);
$('select:not([readonly]) option').removeAttr('disabled');
I faced this issue a lot when using position: absolute;
, I faced this issue by using position: relative
in the child element. don't need to change position: absolute
to relative
, just need to add in the child element look into the beneath two examples:
let toggle = document.getElementById('toggle')
toggle.addEventListener("click", () => {
toggle.classList.toggle('change');
})
_x000D_
.container {
width: 60px;
height: 22px;
background: #333;
border-radius: 20px;
position: relative;
cursor: pointer;
}
.change .slide {
transform: translateX(33px);
}
.slide {
transition: 0.5s;
width: 20px;
height: 20px;
background: #fff;
border-radius: 20px;
margin: 2px 2px;
z-index: 100;
}
.dot {
width: 10px;
height: 16px;
background: red;
position: absolute;
top: 4px;
right: 5px;
z-index: 1;
}
_x000D_
<div class="container" id="toggle">
<div class="slide"></div>
<div class="dot"></div>
</div>
_x000D_
let toggle = document.getElementById('toggle')
toggle.addEventListener("click", () => {
toggle.classList.toggle('change');
})
_x000D_
.container {
width: 60px;
height: 22px;
background: #333;
border-radius: 20px;
position: relative;
cursor: pointer;
}
.change .slide {
transform: translateX(33px);
}
.slide {
transition: 0.5s;
width: 20px;
height: 20px;
background: #fff;
border-radius: 20px;
margin: 2px 2px;
z-index: 100;
// Just add position relative;
position: relative;
}
.dot {
width: 10px;
height: 16px;
background: red;
position: absolute;
top: 4px;
right: 5px;
z-index: 1;
}
_x000D_
<div class="container" id="toggle">
<div class="slide"></div>
<div class="dot"></div>
</div>
_x000D_
Just try $('.handle').css('left', '300px');
$responseInfo = curl_getinfo($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$body = substr($response, $header_size);
$result=array();
$result['httpCode']=$httpCode;
$result['body']=json_decode($body);
$result['responseInfo']=$responseInfo;
print_r($httpCode);
print_r($result['body']); exit;
curl_close($ch);
if($httpCode == 403)
{
print_r("Access denied");
exit;
}
else
{
//catch more errors
}
String jsonInput = "{\"mob no\":\"9846716175\"}";//Read input Here
JSONReader reader = new JSONValidatingReader();
Object result = reader.read(jsonInput);
System.out.println("Validation Success !!");
Please download stringtree-json library
This code snippet worked for me:
PorterDuffColorFilter porterDuffColorFilter = new PorterDuffColorFilter(getResources().getColor(R.color.your_color),PorterDuff.Mode.MULTIPLY);
imgView.getDrawable().setColorFilter(porterDuffColorFilter);
imgView.setBackgroundColor(Color.TRANSPARENT)
Personally, I usually go with:
select *
from t1
where date between trunc( :somedate ) -- 00:00:00
and trunc( :somedate ) + .99999 -- 23:59:59
This may be late, but sharing it for the new users visiting this question. To drop multiple columns actual syntax is
alter table tablename drop column col1, drop column col2 , drop column col3 ....
So for every column you need to specify "drop column" in Mysql 5.0.45.
Just several days ago, I met the same question just like yours. All code runs well on my local machine, but turns out error(noclassdeffound&initialize). So I post my solution, but I don't know why, I merely advance a possibility. I hope someone know will explain this.@John Vint Firstly, I'll show you my problem. My code has static variable and static block both. When I first met this problem, I tried John Vint's solution, and tried to catch the exception. However, I caught nothing. So I thought it is because the static variable(but now I know they are the same thing) and still found nothing. So, I try to find the difference between the linux machine and my computer. Then I found that this problem happens only when several threads run in one process(By the way, the linux machine has double cores and double processes). That means if there are two tasks(both uses the code which has static block or variables) run in the same process, it goes wrong, but if they run in different processes, both of them are ok. In the Linux machine, I use
mvn -U clean test -Dtest=path
to run a task, and because my static variable is to start a container(or maybe you initialize a new classloader), so it will stay until the jvm stop, and the jvm stops only when all the tasks in one process stop. Every task will start a new container(or classloader) and it makes the jvm confused. As a result, the error happens. So, how to solve it? My solution is to add a new command to the maven command, and make every task go to the same container.
-Dxxx.version=xxxxx #sorry can't post more
Maybe you have already solved this problem, but still hope it will help others who meet the same problem.
Same origin policy has nothing to do with sending request to another url (different protocol or domain or port).
It is all about restricting access to (reading) response data from another url. So JavaScript code within a page can post to arbitrary domain or submit forms within that page to anywhere (unless the form is in an iframe with different url).
But what makes these POST requests inefficient is that these requests lack antiforgery tokens, so are ignored by the other url. Moreover, if the JavaScript tries to get that security tokens, by sending AJAX request to the victim url, it is prevented to access that data by Same Origin Policy.
A good example: here
And a good documentation from Mozilla: here
For a script working with Python 2 (tested versions 2.7.3 and 2.6.8) and Python 3 (3.2.3 and 3.3.2+) try:
#! /usr/bin/env python
try:
# For Python 3.0 and later
from urllib.request import urlopen
except ImportError:
# Fall back to Python 2's urllib2
from urllib2 import urlopen
html = urlopen("http://www.google.com/")
print(html.read())
only 8.0.0 throw the exception, above 8.0 has remove the exception
Guessing from the information I have, you're not actually compiling the program, but trying to run it. That is, ALL_BUILD is set as your startup project. (It should be in a bold font, unlike the other projects in your solution) If you then try to run/debug, you will get the error you describe, because there is simply nothing to run.
The project is most likely generated via CMAKE and included in your Visual Studio solution. Set any of the projects that do generate a .exe as the startup project (by right-clicking on the project and selecting "set as startup project") and you will most likely will be able to start those from within Visual Studio.
If you know the values are 0 or 1, you could do flipval ^= 1
.
If you really need to get it back into an array I find it easiest to convert the array
to a list
, expand the list then convert it back to an array
.
string[] myArray = new string[1] {"Element One"};
// Convert it to a list
List<string> resizeList = myArray.ToList();
// Add some elements
resizeList.Add("Element Two");
// Back to an array
myArray = resizeList.ToArray();
// myArray has grown to two elements.
iOS 11
Setting a custom button using constraint:
let buttonWidth = CGFloat(30)
let buttonHeight = CGFloat(30)
let button = UIButton(type: .custom)
button.setImage(UIImage(named: "img name"), for: .normal)
button.addTarget(self, action: #selector(buttonTapped(sender:)), for: .touchUpInside)
button.widthAnchor.constraint(equalToConstant: buttonWidth).isActive = true
button.heightAnchor.constraint(equalToConstant: buttonHeight).isActive = true
self.navigationItem.rightBarButtonItem = UIBarButtonItem.init(customView: button)
You can do it with plain JavaScript:
alert('123-4-'.substr(0, 4)); // outputs "123-"
This returns the first four characters of your string (adjust 4
to suit your needs).
The popular GetLeftPart
solution is not supported in the PCL version of Uri
, unfortunately. GetComponents
is, however, so if you need portability, this should do the trick:
uri.GetComponents(
UriComponents.SchemeAndServer | UriComponents.UserInfo, UriFormat.Unescaped);
The simplest way to do that is using plain HTML.
You can use one of these ways:
<embed type="text/html" src="header.html">
or:
<object name="foo" type="text/html" data="header.html"></object>
When using java 8, you may take advantage of stream API and simplify code to
return (YourEntityClass) entityManager.createQuery()
....
.getResultList()
.stream().findFirst();
That will give you java.util.Optional
If you prefer null instead, all you need is
...
.getResultList()
.stream().findFirst().orElse(null);
In some cases your directive runs twice when you simply not correct close you directive like this:
<my-directive>Some content<my-directive>
This will run your directive twice. Also there is another often case when your directive runs twice:
make sure you are not including your directive in your index.html
TWICE!
<html>
<head>
<title>orientation and device detection in css3</title>
<link rel="stylesheet" media="all and (max-device-width: 480px) and (orientation:portrait)" href="iphone-portrait.css" />
<link rel="stylesheet" media="all and (max-device-width: 480px) and (orientation:landscape)" href="iphone-landscape.css" />
<link rel="stylesheet" media="all and (device-width: 768px) and (device-height: 1024px) and (orientation:portrait)" href="ipad-portrait.css" />
<link rel="stylesheet" media="all and (device-width: 768px) and (device-height: 1024px) and (orientation:landscape)" href="ipad-landscape.css" />
<link rel="stylesheet" media="all and (device-width: 800px) and (device-height: 1184px) and (orientation:portrait)" href="htcdesire-portrait.css" />
<link rel="stylesheet" media="all and (device-width: 800px) and (device-height: 390px) and (orientation:landscape)" href="htcdesire-landscape.css" />
<link rel="stylesheet" media="all and (min-device-width: 1025px)" href="desktop.css" />
</head>
<body>
<div id="iphonelandscape">iphone landscape</div>
<div id="iphoneportrait">iphone portrait</div>
<div id="ipadlandscape">ipad landscape</div>
<div id="ipadportrait">ipad portrait</div>
<div id="htcdesirelandscape">htc desire landscape</div>
<div id="htcdesireportrait">htc desire portrait</div>
<div id="desktop">desktop</div>
<script type="text/javascript">
function res() { document.write(screen.width + ', ' + screen.height); }
res();
</script>
</body>
</html>
To convert a
Kotlin
source file to aJava
source file you need to (when you in Android Studio):
Press Cmd-Shift-A on a Mac, or press Ctrl-Shift-A on a Windows machine.
Type the action you're looking for: Kotlin Bytecode
and choose Show Kotlin Bytecode
from menu.
Decompile
button on the top of Kotlin Bytecode
panel.It will work on Linux kernel 2.6.28 (confirmed on 4.9.x). It won't work on FreeBSD and other Unix flavors.
Your /usr/local/bin/groovy
is a shell script wrapping the Java runtime running Groovy.
See the Interpreter Scripts section of EXECVE(2) and EXECVE(2).
It can be used to use features which will appear in newer versions while having an older release of Python.
For example
>>> from __future__ import print_function
will allow you to use print
as a function:
>>> print('# of entries', len(dictionary), file=sys.stderr)
String hql = "select userName from AccountInfo order by points desc 5";
This worked for me without using setmaxResults();
Just provide the max value in the last (in this case 5) without using the keyword limit
.
:P
Yes, you need the full path.
log = open(os.path.join(root, f), 'r')
Is the quick fix. As the comment pointed out, os.walk
decends into subdirs so you do need to use the current directory root rather than indir
as the base for the path join.
Unfortunately historical ticker data that is free is hard to come by. Now that opentick is dead, I dont know of any other provider.
In a previous lifetime I worked for a hedgefund that had an automated trading system, and we used historical data profusely.
We used TickData for our source. Their prices were reasonable, and the data had sub second resolution.
I got this working : -
$.get('api.php', 'client=mikescafe', function(data) {
...
});
It sends via get the string ?client=mikescafe then collect this variable in api.php, and use it in your mysql statement.
You can use the following regular expression.
string.split(/ /)[0].replace(/[^\d]/g, '')
use below code
Task.WaitAll(Task.Run(async () => await GetResponse<MyObject>("my url")));
fig = plt.figure()
ax = fig.add_subplot(111)
plt.xticks([0.4,0.14,0.2,0.2], fontsize = 50) # work on current fig
plt.show()
the x/yticks has the same properties as matplotlib.text
I have faced the same problem. I fixed this by enabling Virtualization
from BIOS
setup.
Data Storage:
Specify the utf8mb4
character set on all tables and text columns in your database. This makes MySQL physically store and retrieve values encoded natively in UTF-8. Note that MySQL will implicitly use utf8mb4
encoding if a utf8mb4_*
collation is specified (without any explicit character set).
In older versions of MySQL (< 5.5.3), you'll unfortunately be forced to use simply utf8
, which only supports a subset of Unicode characters. I wish I were kidding.
Data Access:
In your application code (e.g. PHP), in whatever DB access method you use, you'll need to set the connection charset to utf8mb4
. This way, MySQL does no conversion from its native UTF-8 when it hands data off to your application and vice versa.
Some drivers provide their own mechanism for configuring the connection character set, which both updates its own internal state and informs MySQL of the encoding to be used on the connection—this is usually the preferred approach. In PHP:
If you're using the PDO abstraction layer with PHP = 5.3.6, you can specify charset
in the DSN:
$dbh = new PDO('mysql:charset=utf8mb4');
If you're using mysqli, you can call set_charset()
:
$mysqli->set_charset('utf8mb4'); // object oriented style
mysqli_set_charset($link, 'utf8mb4'); // procedural style
If you're stuck with plain mysql but happen to be running PHP = 5.2.3, you can call mysql_set_charset
.
If the driver does not provide its own mechanism for setting the connection character set, you may have to issue a query to tell MySQL how your application expects data on the connection to be encoded: SET NAMES 'utf8mb4'
.
The same consideration regarding utf8mb4
/utf8
applies as above.
Output:
If your application transmits text to other systems, they will also need to be informed of the character encoding. With web applications, the browser must be informed of the encoding in which data is sent (through HTTP response headers or HTML metadata).
In PHP, you can use the default_charset
php.ini option, or manually issue the Content-Type
MIME header yourself, which is just more work but has the same effect.
When encoding the output using json_encode()
, add JSON_UNESCAPED_UNICODE
as a second parameter.
Input:
Unfortunately, you should verify every received string as being valid UTF-8 before you try to store it or use it anywhere. PHP's mb_check_encoding()
does the trick, but you have to use it religiously. There's really no way around this, as malicious clients can submit data in whatever encoding they want, and I haven't found a trick to get PHP to do this for you reliably.
From my reading of the current HTML spec, the following sub-bullets are not necessary or even valid anymore for modern HTML. My understanding is that browsers will work with and submit data in the character set specified for the document. However, if you're targeting older versions of HTML (XHTML, HTML4, etc.), these points may still be useful:
accept-charset
attribute to all your <form>
tags: <form ... accept-charset="UTF-8">
.<form>
tag.Other Code Considerations:
Obviously enough, all files you'll be serving (PHP, HTML, JavaScript, etc.) should be encoded in valid UTF-8.
You need to make sure that every time you process a UTF-8 string, you do so safely. This is, unfortunately, the hard part. You'll probably want to make extensive use of PHP's mbstring
extension.
PHP's built-in string operations are not by default UTF-8 safe. There are some things you can safely do with normal PHP string operations (like concatenation), but for most things you should use the equivalent mbstring
function.
To know what you're doing (read: not mess it up), you really need to know UTF-8 and how it works on the lowest possible level. Check out any of the links from utf8.com for some good resources to learn everything you need to know.
It really helpful for the clickable part for some portion of the text.
The dot is a special character in the regular expression. If you want to spanable the dot need to escape dot as \\
. instead of just passing ".
" to the spanable text method. Alternatively, you can also use the regular expression [.]
to spanable the String by a dot in Java.
Oracle have announced a "statement of direction" for ODP.net and the Entity Framework:
In summary, ODP.Net beta around the end of 2010, production sometime in 2011.
here is an example:
//region regionName
//code
//endregion
100% works in Android studio
Possibly, you closed the 'file1'.
Just use 'w' flag, that create new file:
file1 = open('recentlyUpdated.yaml', 'w')
mode is an optional string that specifies the mode in which the file is opened. It defaults to 'r' which means open for reading in text mode. Other common values are 'w' for writing (truncating the file if it already exists)...
(see also https://docs.python.org/3/library/functions.html?highlight=open#open)
On Unix you can use valgrind
to find issues. It's free and powerful. If you'd rather do it yourself you can overload the new
and delete
operators to set up a configuration where you have 1 byte with 0xDEADBEEF
before and after each new object. Then track what happens at each iteration. This can fail to catch everything (you aren't guaranteed to even touch those bytes) but it has worked for me in the past on a Windows platform.
Shorter version of:
REGEXP_REPLACE( my_value, '[[:space:]]', '' )
Would be:
REGEXP_REPLACE( my_value, '\s')
Neither of the above statements will remove "null" characters.
To remove "nulls" encase the statement with a replace
Like so:
REPLACE(REGEXP_REPLACE( my_value, '\s'), CHR(0))
Obvious caveats aside, if your array was actually like the one above, you could do
if [[ ${arr[*]} =~ d ]]
then
do your thing
else
do something
fi
Yes. You know that you can put any Object
into the Object
parameter of most JOptionPane.showXXX methods
, and often that Object
happens to be a JPanel
.
In your situation, perhaps you could use a JPanel
that has several JTextFields
in it:
import javax.swing.*;
public class JOptionPaneMultiInput {
public static void main(String[] args) {
JTextField xField = new JTextField(5);
JTextField yField = new JTextField(5);
JPanel myPanel = new JPanel();
myPanel.add(new JLabel("x:"));
myPanel.add(xField);
myPanel.add(Box.createHorizontalStrut(15)); // a spacer
myPanel.add(new JLabel("y:"));
myPanel.add(yField);
int result = JOptionPane.showConfirmDialog(null, myPanel,
"Please Enter X and Y Values", JOptionPane.OK_CANCEL_OPTION);
if (result == JOptionPane.OK_OPTION) {
System.out.println("x value: " + xField.getText());
System.out.println("y value: " + yField.getText());
}
}
}
I too got the same error, when I did this behind a proxy. But after I exported the following from a terminal and re-tried the same command, the problem got resolved:
export http_proxy="http://username:password@proxy_ip_addr:port/"
export https_proxy="https://username:password@proxy_ip_addr:port/"
How it looks:
Best solution to my case. I need video fit web view size. Use embed youtube link with your video id. Example:
WebView youtubeWebView; //todo find or bind web view
String myVideoYoutubeId = "-bvXmLR3Ozc";
outubeWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
});
WebSettings webSettings = youtubeWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setUseWideViewPort(true);
youtubeWebView.loadUrl("https://www.youtube.com/embed/" + myVideoYoutubeId);
Web view xml code
<WebView
android:id="@+id/youtube_web_view"
android:layout_width="match_parent"
android:layout_height="200dp"/>
Try with this:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/drawer_layout"
android:fitsSystemWindows="true">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--Main layout and ads-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:id="@+id/ll_main_hero"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
</FrameLayout>
<FrameLayout
android:id="@+id/ll_ads"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="320dp"
android:layout_height="50dp"
android:layout_gravity="center"
android:background="#ff00ff" />
</FrameLayout>
</LinearLayout>
<!--Toolbar-->
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/toolbar"
android:elevation="4dp" />
</FrameLayout>
<!--left-->
<ListView
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="@null"
android:background="@mipmap/layer_image"
android:id="@+id/left_drawer"></ListView>
<!--right-->
<FrameLayout
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:background="@mipmap/layer_image">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@mipmap/ken2"
android:scaleType="centerCrop" />
</FrameLayout>
style :
<style name="ts_theme_overlay" parent="Theme.AppCompat.Light.NoActionBar">
<item name="colorPrimary">@color/red_A700</item>
<item name="colorPrimaryDark">@color/red1</item>
<item name="android:windowBackground">@color/blue_A400</item>
</style>
Main Activity extends ActionBarActivity
toolBar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolBar);
Now you can onCreateOptionsMenu
like as normal ActionBar with ToolBar.
This is my Layout
Hope you understand !have fun !
This help to hide and show the sidebar, and the content take place of the empty space left by the sidebar.
<div id="A">Sidebar</div>
<div id="B"><button>toggle</button>
Content here: Bla, bla, bla
</div>
//Toggle Hide/Show sidebar slowy
$(document).ready(function(){
$('#B').click(function(e) {
e.preventDefault();
$('#A').toggle('slow');
$('#B').toggleClass('extended-panel');
});
});
html, body {
margin: 0;
padding: 0;
border: 0;
}
#A, #B {
position: absolute;
}
#A {
top: 0px;
width: 200px;
bottom: 0px;
background:orange;
}
#B {
top: 0px;
left: 200px;
right: 0;
bottom: 0px;
background:green;
}
/* makes the content take place of the SIDEBAR
which is empty when is hided */
.extended-panel {
left: 0px !important;
}
The working directory is a common concept across virtually all operating systems and program languages etc. It's the directory in which your program is running. This is usually (but not always, there are ways to change it) the directory the application is in.
Relative paths are ones that start without a drive specifier. So in linux they don't start with a /
, in windows they don't start with a C:\
, etc. These always start from your working directory.
Absolute paths are the ones that start with a drive (or machine for network paths) specifier. They always go from the start of that drive.
try staring jboss with ./standalone.sh -c standalone-full.xml or any other alternative that allows you to start with the full profile
You can also use pandas.Series.isin although it's a little bit longer than 'a' in s.values
:
In [2]: s = pd.Series(list('abc'))
In [3]: s
Out[3]:
0 a
1 b
2 c
dtype: object
In [3]: s.isin(['a'])
Out[3]:
0 True
1 False
2 False
dtype: bool
In [4]: s[s.isin(['a'])].empty
Out[4]: False
In [5]: s[s.isin(['z'])].empty
Out[5]: True
But this approach can be more flexible if you need to match multiple values at once for a DataFrame (see DataFrame.isin)
>>> df = DataFrame({'A': [1, 2, 3], 'B': [1, 4, 7]})
>>> df.isin({'A': [1, 3], 'B': [4, 7, 12]})
A B
0 True False # Note that B didn't match 1 here.
1 False True
2 True True
dirname
and basename
are the tools you're looking for for extracting path components:
$ export VAR='/home/pax/file.c'
$ echo "$(dirname "${VAR}")" ; echo "$(basename "${VAR}")"
/home/pax
file.c
They're not internal Bash commands but they're part of the POSIX standard - see dirname
and basename
. Hence, they're probably available on, or can be obtained for, most platforms that are capable of running bash
.
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int height = metrics.heightPixels;
int width = metrics.widthPixels;
i guess the code which you wrote is deprecated.
Just remove the ,
with replace()
:
float("123,456.908".replace(',',''))
Eileen: No, it is not var nameVal = form.inputname.val();
. It should be either...
in jQuery:
// you can use IDs (easier)
var nameVal = $(form).find('#id').val();
// or use the [name=Fieldname] to search for the field
var nameVal = $(form).find('[name=Fieldname]').val();
Or in JavaScript:
var nameVal = this.form.FieldName.value;
Or a combination:
var nameVal = $(this.form.FieldName).val();
With jQuery, you could even loop through all of the inputs in the form:
$(form).find('input, select, textarea').each(function(){
var name = this.name;
// OR
var name = $(this).attr('name');
var value = this.value;
// OR
var value = $(this).val();
....
});
Since Java8 this can be done even cleaner using a combination of Comparator
and Lambda expressions
For Example:
class Student{
private String name;
private List<Score> scores;
// +accessor methods
}
class Score {
private int grade;
// +accessor methods
}
Collections.sort(student.getScores(), Comparator.comparing(Score::getGrade);
You can just give your top child view (the TextView @+id/TextView) an attribute:
android:layout_weight="1"
.
This will force all other elements below it to the bottom.
If the variable table
contains invalid characters (like a space) you should add square brackets around the variable.
public DataTable fillDataTable(string table)
{
string query = "SELECT * FROM dstut.dbo.[" + table + "]";
using(SqlConnection sqlConn = new SqlConnection(conSTR))
using(SqlCommand cmd = new SqlCommand(query, sqlConn))
{
sqlConn.Open();
DataTable dt = new DataTable();
dt.Load(cmd.ExecuteReader());
return dt;
}
}
By the way, be very careful with this kind of code because is open to Sql Injection. I hope for you that the table name doesn't come from user input
Ran into the same problem myself, but my controller definitions looked a little different than above. For controllers defined like this:
function MyController($scope, $http) {
// ...
}
Just add a line after the declaration indicating which objects to inject when the controller is instantiated:
function MyController($scope, $http) {
// ...
}
MyController.$inject = ['$scope', '$http'];
This makes it minification-safe.
you could use a recursive method like below:
public static String getAllNumbersFromString(String input) {
if (input == null || input.length() == 0) {
return "";
}
char c = input.charAt(input.length() - 1);
String newinput = input.substring(0, input.length() - 1);
if (c >= '0' && c<= '9') {
return getAllNumbersFromString(newinput) + c;
} else {
return getAllNumbersFromString(newinput);
}
}
wt = tt - cpu tm.
Tt = cpu tm + wt.
Where wt
is a waiting time and tt
is turnaround time. Cpu time is also called burst time.
Another alternative is;
sudo iptables -A INPUT -p tcp --dport 8000 -s ! 1.2.3.4 -j DROP
I had similar issue that 3 bridged virtualmachine just need access eachother with different combination, so I have tested this command and it works well.
Edit**
According to Fernando comment and this link exclamation mark (
!
) will be placed before than-s
parameter:
sudo iptables -A INPUT -p tcp --dport 8000 ! -s 1.2.3.4 -j DROP
XML code
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_view_top"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:cardCornerRadius="5dp"
app:contentPadding="25dp"
app:cardBackgroundColor="#e4bfef"
app:cardElevation="4dp"
app:cardMaxElevation="6dp" />
From the code
CardView card = findViewById(R.id.card_view_top);
card.setCardBackgroundColor(Color.parseColor("#E6E6E6"));
The function you need is CInt
.
ie CInt(PrinterLabel)
See Type Conversion Functions (Visual Basic) on MSDN
Edit: Be aware that CInt and its relatives behave differently in VB.net and VBScript. For example, in VB.net, CInt casts to a 32-bit integer, but in VBScript, CInt casts to a 16-bit integer. Be on the lookout for potential overflows!
To toggle a checkbox or you can use
element.checked = !element.checked;
so you could use
if (attribute == elementName)
{
arrChecks[i].checked = !arrChecks[i].checked;
} else {
arrChecks[i].checked = false;
}
Done!
<asp:TemplateField HeaderText="# Percentage click throughs">
<ItemTemplate>
<%# AddPercentClickThroughs(Convert.ToDecimal(DataBinder.Eval(Container.DataItem, "EmailSummary.pLinksClicked")), Convert.ToDecimal(DataBinder.Eval(Container.DataItem, "NumberOfSends")))%>
</ItemTemplate>
</asp:TemplateField>
public string AddPercentClickThroughs(decimal NumberOfSends, decimal EmailSummary.pLinksClicked)
{
decimal OccupancyPercentage = 0;
if (TotalNoOfRooms != 0 && RoomsOccupied != 0)
{
OccupancyPercentage = (Convert.ToDecimal(NumberOfSends) / Convert.ToDecimal(EmailSummary.pLinksClicked) * 100);
}
return OccupancyPercentage.ToString("F");
}
Decimal is a value type, so if you wish to check whether it has a value other than the value it was initialised with (zero) you can use the condition myDecimal != default(decimal).
Otherwise you should possibly consider the use of a nullable (decimal?) type and the use a condition such as myNullableDecimal.HasValue
res.sendFile( __dirname + "/public/" + "index1.html" );
where __dirname
will manage the name of the directory that the currently executing script ( server.js
) resides in.
Use child.setLocation(0, 0)
on the button, and parent.setLayout(null)
. Instead of using setBounds(...) on the JFrame to size it, consider using just setSize(...)
and letting the OS position the frame.
//JPanel
JPanel pnlButton = new JPanel();
//Buttons
JButton btnAddFlight = new JButton("Add Flight");
public Control() {
//JFrame layout
this.setLayout(null);
//JPanel layout
pnlButton.setLayout(null);
//Adding to JFrame
pnlButton.add(btnAddFlight);
add(pnlButton);
// postioning
pnlButton.setLocation(0,0);
By design, domain names must have at least two dots; otherwise the browser will consider them invalid. (See reference on http://curl.haxx.se/rfc/cookie_spec.html)
When working on localhost
, the cookie domain must be omitted entirely. You should not set it to ""
or NULL
or FALSE
instead of "localhost"
. It is not enough.
For PHP, see comments on http://php.net/manual/en/function.setcookie.php#73107.
If working with the Java Servlet API, don't call the cookie.setDomain("...")
method at all.
I think this can be useful. this was simple CSS selector.
hr { background-color: red; height: 1px; border: 0; }
_x000D_
<hr>
_x000D_
If you want to dynamically change it, I prefer using SqlConnectionStringBuilder .
It allows you to convert ConnectionString i.e. a string into class Object, All the connection string properties will become its Member.
In this case the real advantage would be that you don't have to worry about If the ConnectionTimeout string part is already exists in the connection string or not?
Also as it creates an Object and its always good to assign value in object rather than manipulating string.
Here is the code sample:
var sscsb = new SqlConnectionStringBuilder(_dbFactory.Database.ConnectionString);
sscsb.ConnectTimeout = 30;
var conn = new SqlConnection(sscsb.ConnectionString);
You can use MultiIndex.droplevel
:
>>> cols = pd.MultiIndex.from_tuples([("a", "b"), ("a", "c")])
>>> df = pd.DataFrame([[1,2], [3,4]], columns=cols)
>>> df
a
b c
0 1 2
1 3 4
[2 rows x 2 columns]
>>> df.columns = df.columns.droplevel()
>>> df
b c
0 1 2
1 3 4
[2 rows x 2 columns]
Use cookielib. The linked doc page provides examples at the end. You'll also find a tutorial here.
Use below command in Debian based container:
apt-get install vim-tiny
Complete instruction for using in Dockerfile:
RUN apt-get update && apt-get install --no-install-recommends -y \
vim-tiny \
&& apt-get clean && rm -rf /var/lib/apt/lists/*
It doesn't install unnecessary packages and removes unnecessary downloaded files, so your docker image size won't increase dramatically.
In HTML5, they are equivalent. Use the shorter one, it is easier to remember and type. Browser support is fine since it was designed for backwards compatibility.
Try to use different id and name parameters, currently you have same here. Please visit the link below for the same, this might be help you :
function calculatePercentage($oldFigure, $newFigure)
{
$percentChange = (($oldFigure - $newFigure) / $oldFigure) * 100;
return round(abs($percentChange));
}
In Java 8 for an Obj
entity with field
and getField() method you can use:
List<Obj> objs ...
Stream<Obj> notNullObjs =
objs.stream().filter(obj -> obj.getValue() != null);
Double sum = notNullObjs.mapToDouble(Obj::getField).sum();
This can be caused by the two sides of the connection disagreeing over whether the connection timed out or not during a keepalive. (Your code tries to reused the connection just as the server is closing it because it has been idle for too long.) You should basically just retry the operation over a new connection. (I'm surprised your library doesn't do this automatically.)
void numel(int array1[100][100])
{
int count=0;
for(int i=0;i<100;i++)
{
for(int j=0;j<100;j++)
{
if(array1[i][j]!='\0')
{
count++;
//printf("\n%d-%d",array1[i][j],count);
}
else
break;
}
}
printf("Number of elements=%d",count);
}
int main()
{
int r,arr[100][100]={0},c;
printf("Enter the no. of rows: ");
scanf("%d",&r);
printf("\nEnter the no. of columns: ");
scanf("%d",&c);
printf("\nEnter the elements: ");
for(int i=0;i<r;i++)
{
for(int j=0;j<c;j++)
{
scanf("%d",&arr[i][j]);
}
}
numel(arr);
}
This shows the exact number of elements in matrix irrespective of the array size you mentioned while initilasing(IF that's what you meant)
A perl oneliner would do: perl -i.bak -pe 's/[^[:ascii:]]//g' <your file>
-i
says that the file is going to be edited inplace, and the backup is going to be saved with extension .bak
.
Simply inside the loop write <?php the_post_thumbnail_url(); ?>
as shown below:-
$args=array('post_type' => 'your_custom_post_type_slug','order' => 'DESC','posts_per_page'=> -1) ;
$the_qyery= new WP_Query($args);
if ($the_qyery->have_posts()) :
while ( $the_qyery->have_posts() ) : $the_qyery->the_post();?>
<div class="col col_4_of_12">
<div class="article_standard_view">
<article class="item">
<div class="item_header">
<a href="<?php the_permalink(); ?>"><img src="<?php the_post_thumbnail_url(); ?>" alt="Post"></a>
</div>
</article>
</div>
</div>
<?php endwhile; endif; ?>
Make sure you declare the variable on "root" level, outside any code blocks.
You could also remove the var
altogether, although that is not recommended and will throw a "strict" warning.
According to the documentation at MDC, you can set global variables using window.variablename
.
You're close. You can strip the whitespace by using the replace
method like this:
$answer.replace(' ','')
There needs to be no space or characters between the second set of quotes in the replace method (replacing the whitespace with nothing).
Calling System.exit(0)
(or any other value for that matter) causes the Java virtual machine to exit, terminating the current process. The parameter you pass will be the return value that the java
process will return to the operating system. You can make this call from anywhere in your program - and the result will always be the same - JVM terminates. As this is simply calling a static method in System
class, the compiler does not know what it will do - and hence does not complain about unreachable code.
return
statement simply aborts execution of the current method. It literally means return the control to the calling method. If the method is declared as void
(as in your example), then you do not need to specify a value, as you'd need to return void
. If the method is declared to return a particular type, then you must specify the value to return - and this value must be of the specified type.
return
would cause the program to exit only if it's inside the main
method of the main class being execute. If you try to put code after it, the compiler will complain about unreachable code, for example:
public static void main(String... str) {
System.out.println(1);
return;
System.out.println(2);
System.exit(0);
}
will not compile with most compiler - producing unreachable code
error pointing to the second System.out.println
call.
dir.Delete(true); // true => recursive delete
also this should work (not tested):
SELECT u.* FROM room u JOIN facilities_r fu ON fu.id_uc = u.id_uc AND u.id_fu IN(4,3) WHERE 1 AND vizibility = 1 GROUP BY id_uc ORDER BY u_premium desc , id_uc desc
If u.id_fu is a numeric field then you can remove the ' around them. The same for vizibility. Only if the field is a text field (data type char, varchar or one of the text-datatype e.g. longtext) then the value has to be enclosed by ' or even ".
Also I and Oracle too recommend to enclose table and field names in backticks. So you won't get into trouble if a field name contains a keyword.
Are you doing this for logging purposes? If so there are several libraries for this. Two of the most popular are Log4j and Logback.
For a one-time task, the Files class makes this easy:
try {
Files.write(Paths.get("myfile.txt"), "the text".getBytes(), StandardOpenOption.APPEND);
}catch (IOException e) {
//exception handling left as an exercise for the reader
}
Careful: The above approach will throw a NoSuchFileException
if the file does not already exist. It also does not append a newline automatically (which you often want when appending to a text file). Another approach is to pass both CREATE
and APPEND
options, which will create the file first if it doesn't already exist:
private void write(final String s) throws IOException {
Files.writeString(
Path.of(System.getProperty("java.io.tmpdir"), "filename.txt"),
s + System.lineSeparator(),
CREATE, APPEND
);
}
However, if you will be writing to the same file many times, the above snippets must open and close the file on the disk many times, which is a slow operation. In this case, a BufferedWriter
is faster:
try(FileWriter fw = new FileWriter("myfile.txt", true);
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter out = new PrintWriter(bw))
{
out.println("the text");
//more code
out.println("more text");
//more code
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
Notes:
FileWriter
constructor will tell it to append to the file, rather than writing a new file. (If the file does not exist, it will be created.)BufferedWriter
is recommended for an expensive writer (such as FileWriter
).PrintWriter
gives you access to println
syntax that you're probably used to from System.out
.BufferedWriter
and PrintWriter
wrappers are not strictly necessary.try {
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("myfile.txt", true)));
out.println("the text");
out.close();
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
If you need robust exception handling for older Java, it gets very verbose:
FileWriter fw = null;
BufferedWriter bw = null;
PrintWriter out = null;
try {
fw = new FileWriter("myfile.txt", true);
bw = new BufferedWriter(fw);
out = new PrintWriter(bw);
out.println("the text");
out.close();
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
finally {
try {
if(out != null)
out.close();
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
try {
if(bw != null)
bw.close();
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
try {
if(fw != null)
fw.close();
} catch (IOException e) {
//exception handling left as an exercise for the reader
}
}
Assuming fairly recent version of Rails you can always run:
rake db:migrate:up VERSION=20090408054532
Where version is the timestamp in the filename of the migration.
Edit: At some point over the last 8 years (I'm not sure what version) Rails added checks that prevent this from running if it has already been run. This is indicated by an entry in the schema_migrations
table. To re-run it, simply execute rake db:migrate:redo VERSION=20090408054532
instead.
It's not an array of arrays. It's an observable of observable(s).
The following returns an observable stream of string.
requestStream
.map(function(requestUrl) {
return requestUrl;
});
While this returns an observable stream of observable stream of json
requestStream
.map(function(requestUrl) {
return Rx.Observable.fromPromise(jQuery.getJSON(requestUrl));
});
flatMap
flattens the observable automatically for us so we can observe the json stream directly
As mscdex said NPM comes with the nodejs msi installed file. I happened to just install the node js installer (standalone). To separately add NPM I followed following step
R defines a ~
(tilde) operator for use in formulas. Formulas have all sorts of uses, but perhaps the most common is for regression:
library(datasets)
lm( myFormula, data=iris)
help("~")
or help("formula")
will teach you more.
@Spacedman has covered the basics. Let's discuss how it works.
First, being an operator, note that it is essentially a shortcut to a function (with two arguments):
> `~`(lhs,rhs)
lhs ~ rhs
> lhs ~ rhs
lhs ~ rhs
That can be helpful to know for use in e.g. apply
family commands.
Second, you can manipulate the formula as text:
oldform <- as.character(myFormula) # Get components
myFormula <- as.formula( paste( oldform[2], "Sepal.Length", sep="~" ) )
Third, you can manipulate it as a list:
myFormula[[2]]
myFormula[[3]]
Finally, there are some helpful tricks with formulae (see help("formula")
for more):
myFormula <- Species ~ .
For example, the version above is the same as the original version, since the dot means "all variables not yet used." This looks at the data.frame you use in your eventual model call, sees which variables exist in the data.frame but aren't explicitly mentioned in your formula, and replaces the dot with those missing variables.
I use this i tested it as key from my EhCacheManager
Memory map ....
Its cleaner i suppose
/**
* Return Hash256 of String value
*
* @param text
* @return
*/
public static String getHash256(String text) {
try {
return org.apache.commons.codec.digest.DigestUtils.sha256Hex(text);
} catch (Exception ex) {
Logger.getLogger(HashUtil.class.getName()).log(Level.SEVERE, null, ex);
return "";
}
}
am using maven but this is the jar commons-codec-1.9.jar
In PySpark 1.3 sort
method doesn't take ascending parameter. You can use desc
method instead:
from pyspark.sql.functions import col
(group_by_dataframe
.count()
.filter("`count` >= 10")
.sort(col("count").desc()))
or desc
function:
from pyspark.sql.functions import desc
(group_by_dataframe
.count()
.filter("`count` >= 10")
.sort(desc("count"))
Both methods can be used with with Spark >= 1.3 (including Spark 2.x).
Here's an example of equal-height columns - Equal Height Columns - revisited
You can also check out the idea of "Faux Columns" as well - Faux Columns
Don't go the table route. If it's not tabular data, don't treat it as such. It's bad for accessibility and flexibility.
To store Python objects in files, use the pickle
module:
import pickle
a = {
'a': 1,
'b': 2
}
with open('file.txt', 'wb') as handle:
pickle.dump(a, handle)
with open('file.txt', 'rb') as handle:
b = pickle.loads(handle.read())
print a == b # True
Notice that I never set b = a
, but instead pickled a
to a file and then unpickled it into b
.
As for your error:
self.whip = open('deed.txt', 'r').read()
self.whip
was a dictionary object. deed.txt
contains text, so when you load the contents of deed.txt
into self.whip
, self.whip
becomes the string representation of itself.
You'd probably want to evaluate the string back into a Python object:
self.whip = eval(open('deed.txt', 'r').read())
Notice how eval
sounds like evil
. That's intentional. Use the pickle
module instead.
Yes.
It is a good practice since an element can be a part of different groups, and you may want specific elements to be a part of more than one group. The element can hold an infinite number of classes in HTML5, while in HTML4 you are limited by a specific length.
The following example will show you the use of multiple classes.
The first class makes the text color
red.
The second class makes the background-color
blue.
See how the DOM Element with multiple classes will behave, it will wear both CSS statements at the same time.
Result: multiple CSS statements in different classes will stack up.
You can read more about CSS Specificity.
.class1 {
color:red;
}
.class2 {
background-color:blue;
}
<div class="class1">text 1</div>
<div class="class2">text 2</div>
<div class="class1 class2">text 3</div>
Simple functions,
function Encrypt(value)
{
var result="";
for(i=0;i<value.length;i++)
{
if(i<value.length-1)
{
result+=value.charCodeAt(i)+10;
result+="-";
}
else
{
result+=value.charCodeAt(i)+10;
}
}
return result;
}
function Decrypt(value)
{
var result="";
var array = value.split("-");
for(i=0;i<array.length;i++)
{
result+=String.fromCharCode(array[i]-10);
}
return result;
}
Add the below command in your *.service.ts file"
import { map } from "rxjs/operators";
**********************************************Example**Below**************************************
getPosts(){
this.http.get('http://jsonplaceholder.typicode.com/posts')
.pipe(map(res => res.json()));
}
}
I am using windows 10;
angular6 with typescript V 2.3.4.0
I'm using ASP.NET SPA Extensions which creates me a proxy on ports 5000 and 5001 that pass through to Angular's port 4200 during development.
I had had CORS correctly setup for https port 5001 and everything was fine, but I inadvertently went to an old bookmark which was for port 5000. Then suddenly this message arose. As others have said in the console there was a 'preflight' error message.
So regardless of your environment, if you're using CORS make sure you have all ports specified - as the host and port both matter.
The HexBinaryAdapter
provides the ability to marshal and unmarshal between String
and byte[]
.
import javax.xml.bind.annotation.adapters.HexBinaryAdapter;
public byte[] hexToBytes(String hexString) {
HexBinaryAdapter adapter = new HexBinaryAdapter();
byte[] bytes = adapter.unmarshal(hexString);
return bytes;
}
That's just an example I typed in...I actually just use it as is and don't need to make a separate method for using it.
Neither <iostream>
nor <iostream.h>
are standard C header files. Your code is meant to be C++, where <iostream>
is a valid header. Use g++
(and a .cpp
file extension) for C++ code.
Alternatively, this program uses mostly constructs that are available in C anyway. It's easy enough to convert the entire program to compile using a C compiler. Simply remove #include <iostream>
and using namespace std;
, and replace cout << endl;
with putchar('\n');
... I advise compiling using C99 (eg. gcc -std=c99
)
depends on your DBMS (people don't seem to know what that is nowadays)
-- MYSql:
DELETE FROM table LIMIT 1;
-- Postgres:
DELETE FROM table LIMIT 1;
-- MSSql:
DELETE TOP(1) FROM table;
-- Oracle:
DELETE FROM table WHERE ROWNUM = 1;