This example shows how to go directly to the Windows API and not link in the C Standard Library.
global _main
extern _GetStdHandle@4
extern _WriteFile@20
extern _ExitProcess@4
section .text
_main:
; DWORD bytes;
mov ebp, esp
sub esp, 4
; hStdOut = GetstdHandle( STD_OUTPUT_HANDLE)
push -11
call _GetStdHandle@4
mov ebx, eax
; WriteFile( hstdOut, message, length(message), &bytes, 0);
push 0
lea eax, [ebp-4]
push eax
push (message_end - message)
push message
push ebx
call _WriteFile@20
; ExitProcess(0)
push 0
call _ExitProcess@4
; never here
hlt
message:
db 'Hello, World', 10
message_end:
To compile, you'll need NASM and LINK.EXE (from Visual studio Standard Edition)
nasm -fwin32 hello.asm link /subsystem:console /nodefaultlib /entry:main hello.obj
I use procmail to sort my incoming email to different folders. Because I have trouble remembering the procmailrc syntax, I use m4 as a preprocessor. Here's how my procmailrc begins (this isn't the script yet):
divert(-1)
changequote(<<, >>)
define(mailinglistrule,
<<:0:
* $2
Lists/$1
>>)
define(listdt, <<mailinglistrule($1,^Delivered-To:.*$2)>>)
define(listid, <<mailinglistrule($1,^List-Id:.*<$2>)>>)
divert# Generated from .procmailrc.m4 -- DO NOT EDIT
This defines two macros for mailing lists, so e.g. listdt(foo, [email protected]) expands to
:0:
* ^Delivered-To:.*[email protected]
Lists/foo
meaning that emails with a Delivered-To header containing [email protected] should be put in the Lists/foo folder. It also arranges the processed file to begin with a comment that warns me not to edit that file directly.
Now, frankly, m4 scares me: what if I accidentally redefine a macro and procmail starts discarding all my email, or something like that? That's why I have a script, which I call update-procmailrc, that shows me in diff format how my procmailrc is going to change. If the change is just a few lines and looks roughly like what I intended, I can happily approve it, but if there are huge changes to the file, I know to look at my edits more carefully.
#! /bin/sh
PROCMAILRC=.procmailrc
TMPNAM=.procmailrc.tmp.$$
cd $HOME
umask 077
trap "rm -f $TMPNAM" 0
m4 < .procmailrc.m4 > $TMPNAM
diff -u $PROCMAILRC $TMPNAM
echo -n 'Is this acceptable? (y/N) '
read accept
if [ -z "$accept" ]; then
accept=n
fi
if [ $accept = 'y' -o $accept = 'Y' ]; then
mv -f $TMPNAM $PROCMAILRC && \
chmod 400 $PROCMAILRC && \
echo "Created new $PROCMAILRC"
if [ "$?" -ne 0 ]; then
echo "*** FAILED creating $PROCMAILRC"
fi
else
echo "Didn't update $PROCMAILRC"
fi
The script hasn't yet prevented any email disasters, but it has made me less anxious about changing my procmailrc.
I have used this in SQL to set IDENTITY to a particular value:-
DECLARE @ID int = 42;
DECLARE @TABLENAME varchar(50) = 'tablename'
DECLARE @SQL nvarchar(1000) = 'IF EXISTS (SELECT * FROM sys.identity_columns WHERE OBJECT_NAME(OBJECT_ID) = '''+@TABLENAME+''' AND last_value IS NOT NULL)
BEGIN
DBCC CHECKIDENT('+@TABLENAME+', RESEED,' + CONVERT(VARCHAR(10),@ID-1)+');
END
ELSE
BEGIN
DBCC CHECKIDENT('+@TABLENAME+', RESEED,' + CONVERT(VARCHAR(10),@ID)+');
END';
EXEC (@SQL);
And this in C# to set a particular value:-
SetIdentity(context, "tablename", 42);
.
.
private static void SetIdentity(DbContext context, string table,int id)
{
string str = "IF EXISTS (SELECT * FROM sys.identity_columns WHERE OBJECT_NAME(OBJECT_ID) = '" + table
+ "' AND last_value IS NOT NULL)\nBEGIN\n";
str += "DBCC CHECKIDENT('" + table + "', RESEED," + (id - 1).ToString() + ");\n";
str += "END\nELSE\nBEGIN\n";
str += "DBCC CHECKIDENT('" + table + "', RESEED," + (id).ToString() + ");\n";
str += "END\n";
context.Database.ExecuteSqlCommand(str);
}
This builds on the above answers and always makes sure the next value is 42 (in this case).
Both tmux and GNU Screen work under cygwin. They can be installed from the cygwin installer. Just search for their name there and you probably will get to the latest version (at least for tmux).
Another alternative is
npm install react-favicon
And in your application you would just do:
import Favicon from 'react-favicon';
//other codes
ReactDOM.render(
<div>
<Favicon url="/path/to/favicon.ico"/>
// do other stuff here
</div>
, document.querySelector('.react'));
You can add a tree observer to the layout. This should return the correct width and height. onCreate()
is called before the layout of the child views are done. So the width and height is not calculated yet. To get the height and width, put this on the onCreate()
method:
final LinearLayout layout = (LinearLayout) findViewById(R.id.YOUR_VIEW_ID);
ViewTreeObserver vto = layout.getViewTreeObserver();
vto.addOnGlobalLayoutListener (new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
layout.getViewTreeObserver()
.removeOnGlobalLayoutListener(this);
} else {
layout.getViewTreeObserver()
.removeGlobalOnLayoutListener(this);
}
int width = layout.getMeasuredWidth();
int height = layout.getMeasuredHeight();
}
});
Try running all targets individually to check that all are running correct
run ant target name to run a target individually
e.g. ant build-project
Also the default target you specified is
project basedir="." default="build" name="iControlSilk4J"
This will only execute build-subprojects,build-project and init
For me a simple windows update fixed it, I wish I tried it before.
There are a few things wrong here:
First, terminology. "Epoch" refers to the starting point of something. The "Unix Epoch" is Midnight, January 1st 1970 UTC. You can't convert an arbitrary "date string to epoch". You probably meant "Unix Time", which is often erroneously called "Epoch Time".
.unix()
returns Unix Time in whole seconds, but the default moment
constructor accepts a timestamp in milliseconds. You should instead use .valueOf()
to return milliseconds. Note that calling .unix()*1000
would also work, but it would result in a loss of precision.
You're parsing a string without providing a format specifier. That isn't a good idea, as values like 1/2/2014 could be interpreted as either February 1st or as January 2nd, depending on the locale of where the code is running. (This is also why you get the deprecation warning in the console.) Instead, provide a format string that matches the expected input, such as:
moment("10/15/2014 9:00", "M/D/YYYY H:mm")
.calendar()
has a very specific use. If you are near to the date, it will return a value like "Today 9:00 AM". If that's not what you expected, you should use the .format()
function instead. Again, you may want to pass a format specifier.
To answer your questions in comments, No - you don't need to call .local()
or .utc()
.
Putting it all together:
var ts = moment("10/15/2014 9:00", "M/D/YYYY H:mm").valueOf();
var m = moment(ts);
var s = m.format("M/D/YYYY H:mm");
alert("Values are: ts = " + ts + ", s = " + s);
On my machine, in the US Pacific time zone, it results in:
Values are: ts = 1413388800000, s = 10/15/2014 9:00
Since the input value is interpreted in terms of local time, you will get a different value for ts
if you are in a different time zone.
Also note that if you really do want to work with whole seconds (possibly losing precision), moment has methods for that as well. You would use .unix()
to return the timestamp in whole seconds, and moment.unix(ts)
to parse it back to a moment.
var ts = moment("10/15/2014 9:00", "M/D/YYYY H:mm").unix();
var m = moment.unix(ts);
Maybe you can run this regex first to see if the line is all caps:
^[A-Z \d\W]+$
That will match only if it's a line like THING P1 MUST CONNECT TO X2.
Otherwise, you should be able to pull out the individual uppercase phrases with this:
[A-Z][A-Z\d]+
That should match "P1" and "J236" in The thing P1 must connect to the J236 thing in the Foo position.
There should be different ways to do it and each approach should fit a particular application better than another. For most apps, you can simply just handle key or mouse events and enable/disable a logout timer appropriately. That said, on the top of my head, a "fancy" AngularJS-y solution is monitoring the digest loop, if none has been triggered for the last [specified duration] then logout. Something like this.
app.run(function($rootScope) {
var lastDigestRun = new Date();
$rootScope.$watch(function detectIdle() {
var now = new Date();
if (now - lastDigestRun > 10*60*60) {
// logout here, like delete cookie, navigate to login ...
}
lastDigestRun = now;
});
});
If you are able to use other associated technologies such as C#, I suggest using the built in SQL command with Transaction parameter.
var sqlCommand = new SqlCommand(commandText, null, transaction);
I've created a simple Console App that demonstrates this ability which can be found here: https://github.com/hecked12/SQL-Transaction-Using-C-Sharp
In short, C# allows you to overcome this limitation where you can inspect the output of each stored procedure and use that output however you like, for example you can feed it to another stored procedure. If the output is ok, you can commit the transaction, otherwise, you can revert the changes using rollback.
I would imagine Google grabs some data server-side - remember, when a page loads into your browser that has Google Analytics code within it, your browser makes a request to Google's servers; Google can obtain data in that way as well as through the JavaScript embedded in the page.
Another option is the CONCAT command:
SELECT CONCAT(MyTable.TextColumn, 'Text') FROM MyTable
I would use the minted package as mentioned from the developer Konrad Rudolph instead of the listing package. Here is why:
listing package
The listing package does not support colors by default. To use colors you would need to include the color package and define color-rules by yourself with the \lstset command as explained for matlab code here.
Also, the listing package doesn't work well with unicode, but you can fix those problems as explained here and here.
The following code
\documentclass{article}
\usepackage{listings}
\begin{document}
\begin{lstlisting}[language=html]
<html>
<head>
<title>Hello</title>
</head>
<body>Hello</body>
</html>
\end{lstlisting}
\end{document}
produces the following image:
minted package
The minted package supports colors, unicode and looks awesome. However, in order to use it, you need to have python 2.6 and pygments. In Ubuntu, you can check your python version in the terminal with
python --version
and you can install pygments with
sudo apt-get install python-pygments
Then, since minted makes calls to pygments, you need to compile it with -shell-escape like this
pdflatex -shell-escape yourfile.tex
If you use a latex editor like TexMaker or something, I would recommend to add a user-command, so that you can still compile it in the editor.
The following code
\documentclass{article}
\usepackage{minted}
\begin{document}
\begin{minted}{html}
<!DOCTYPE html>
<html>
<head>
<title>Hello</title>
</head>
<body>Hello</body>
</html>
\end{minted}
\end{document}
produces the following image:
Simply
<select id = 'color2'
name = 'color'
onchange = "if ($('#color2').val() == 'others') {
$('#color').show();
} else {
$('#color').hide();
}">
<option value="red">RED</option>
<option value="blue">BLUE</option>
<option value="others">others</option>
</select>
<input type = 'text'
name = 'color'
id = 'color' />
edit: requires JQuery plugin
Well, from sourceTree I couldn't resolve this issue but I created sshkey from bash and at least it works from git-bash.
https://confluence.atlassian.com/bitbucket/set-up-an-ssh-key-728138079.html
I'm surprised nobody has mentioned it before, but FindBin::libs will always find your libs as it searches in all reasonable places relative to the location of your script.
#!/usr/bin/perl
use FindBin::libs;
use <your lib>;
DECLARE @COMBINED_STRINGS AS VARCHAR(50),
@STRING1 AS VARCHAR(20),
@STRING2 AS VARCHAR(20);
SET @STRING1 = 'rupesh''s';
SET @STRING2 = 'malviya';
SET @COMBINED_STRINGS = @STRING1 + @STRING2;
SELECT @COMBINED_STRINGS;
SELECT '2' + '3';
I typed this in a sql file named TEST.sql and I run it. I got the following out put.
+-------------------+
| @COMBINED_STRINGS |
+-------------------+
| 0 |
+-------------------+
1 row in set (0.00 sec)
+-----------+
| '2' + '3' |
+-----------+
| 5 |
+-----------+
1 row in set (0.00 sec)
After looking into this issue a bit more I found the best and sure sort way for string concatenation in SQL is by using CONCAT method. So I made the following changes in the same file.
#DECLARE @COMBINED_STRINGS AS VARCHAR(50),
# @STRING1 AS VARCHAR(20),
# @STRING2 AS VARCHAR(20);
SET @STRING1 = 'rupesh''s';
SET @STRING2 = 'malviya';
#SET @COMBINED_STRINGS = @STRING1 + @STRING2;
SET @COMBINED_STRINGS = (SELECT CONCAT(@STRING1, @STRING2));
SELECT @COMBINED_STRINGS;
#SELECT '2' + '3';
SELECT CONCAT('2','3');
and after executing the file this was the output.
+-------------------+
| @COMBINED_STRINGS |
+-------------------+
| rupesh'smalviya |
+-------------------+
1 row in set (0.00 sec)
+-----------------+
| CONCAT('2','3') |
+-----------------+
| 23 |
+-----------------+
1 row in set (0.00 sec)
SQL version I am using is: 14.14
I have craeted a little script for read directory and write a console name new file (example: 'name.txt' ) and text into file.
const readline = require('readline');
const fs = require('fs');
const pathFile = fs.readdirSync('.');
const file = readline.createInterface({
input: process.stdin,
output: process.stdout
});
file.question('Insert name of your file? ', (f) => {
console.log('File is: ',f.toString().trim());
try{
file.question('Insert text of your file? ', (d) => {
console.log('Text is: ',d.toString().trim());
try {
if(f != ''){
if (fs.existsSync(f)) {
//file exists
console.log('file exist');
return file.close();
}else{
//save file
fs.writeFile(f, d, (err) => {
if (err) throw err;
console.log('The file has been saved!');
file.close();
});
}
}else{
//file empty
console.log('Not file is created!');
console.log(pathFile);
file.close();
}
} catch(err) {
console.error(err);
file.close();
}
});
}catch(err){
console.log(err);
file.close();
}
});
You can use the below code for creating a TextBox as read-only.
Method 1
@Html.TextBoxFor(model => model.Fields[i].TheField, new { @readonly = true })
Method 2
@Html.TextBoxFor(model => model.Fields[i].TheField, new { htmlAttributes = new {disabled = "disabled"}})
The error regarding the file extension has been handled, you either use BMP
(without the dot) or pass the output name with the extension already. Now to handle the error you need to properly modify your data in the frequency domain to be saved as an integer image, PIL
is telling you that it doesn't accept float data to save as BMP.
Here is a suggestion (with other minor modifications, like using fftshift
and numpy.array
instead of numpy.asarray
) for doing the conversion for proper visualization:
import sys
import numpy
from PIL import Image
img = Image.open(sys.argv[1]).convert('L')
im = numpy.array(img)
fft_mag = numpy.abs(numpy.fft.fftshift(numpy.fft.fft2(im)))
visual = numpy.log(fft_mag)
visual = (visual - visual.min()) / (visual.max() - visual.min())
result = Image.fromarray((visual * 255).astype(numpy.uint8))
result.save('out.bmp')
It looks like the github.com
host which jenkins tries to connect to is not listed under the Jenkins user's $HOME/.ssh/known_hosts
. Jenkins runs on most distros as the user jenkins
and hence has its own .ssh
directory to store the list of public keys and known_hosts
.
The easiest solution I can think of to fix this problem is:
# Login as the jenkins user and specify shell explicity,
# since the default shell is /bin/false for most
# jenkins installations.
sudo su jenkins -s /bin/bash
cd SOME_TMP_DIR
# git clone YOUR_GITHUB_URL
# Allow adding the SSH host key to your known_hosts
# Exit from su
exit
If you can change the order of the elements:
int[] myArray = new int[]{1, 3, 8, 5, 7, };
Arrays.sort(myArray);
int max = myArray[myArray.length - 1];
If you can't change the order of the elements:
int[] myArray = new int[]{1, 3, 8, 5, 7, };
int max = Integer.MIN_VALUE;
for(int i = 0; i < myArray.length; i++) {
if(myArray[i] > max) {
max = myArray[i];
}
}
Arrays in JavaScript don't use strings as keys. You will probably find that the value is there, but the key is an integer.
If you make Dict
into an object, this will work:
var dict = {};
var addPair = function (myKey, myValue) {
dict[myKey] = myValue;
};
var giveValue = function (myKey) {
return dict[myKey];
};
The myKey
variable is already a string, so you don't need more quotes.
I know this is not typical alert box, but I hope it may help someone.
There is this expansion that enables you to show notifications inside HTML page using bootstrap.
It is very easy to implement and it works fine. Here is a github page for the project including some demo images.
You've got the right idea, but for /f
is designed to work on multi-line files or commands, not individual strings.
In its simplest form, for
is like Perl's for
, or every other language's foreach
. You pass it a list of tokens, and it iterates over them, calling the same command each time.
for %a in (hello world) do @echo %a
The extensions merely provide automatic ways of building the list of tokens. The reason your current code is coming up with nothing is that ';
' is the default end of line (comment) symbol. But even if you change that, you'd have to use %%g, %%h, %%i, ...
to access the individual tokens, which will severely limit your batch file.
The closest you can get to what you ask for is:
set TabbedPath=%PATH:;= %
for %%g in (%TabbedPath%) do echo %%g
But that will fail for quoted paths that contain semicolons.
In my experience, for /l
and for /r
are good for extending existing commands, but otherwise for
is extremely limited. You can make it slightly more powerful (and confusing) with delayed variable expansion (cmd /v:on
), but it's really only good for lists of filenames.
I'd suggest using WSH or PowerShell if you need to perform string manipulation. If you're trying to write whereis
for Windows, try where /?
.
There is a lot of really helpful info posted here, but there is one thing that all the posts seem to have wrong. I could not find any 'Settings' option under 'Files', and I hunted around for 10 minutes looking through all the menus until I found the settings under 'IntelliJ IDE' -> 'Preferences'.
I don't know if I am using a differing OS version or IntelliJ version from other posters, or if it is because I am a stupid Windows user that doesn't know that settings == preferences on a mac (Did I miss the memo?), but I hope this helps you if you aren't finding the paths that other posts are suggesting.
If the default compiler chosen by cmake
is gcc
and you have installed clang
, you can use the easy way to compile your project with clang
:
$ mkdir build && cd build
$ CXX=clang++ CC=clang cmake ..
$ make -j2
List<Customer> list = ...;
Customer john = list.SingleOrDefault(customer => customer.Firstname == "John");
john will be null if no customer exists with a first name of "John".
Simplest way to do in Python 2.5 exactly what you ask about:
import itertools as it
... it.izip(it.count(1), xrange(2000, 2005)) ...
If you want a list, as you appear to, use zip
in lieu of it.izip
.
(BTW, as a general rule, the best way to make a list out of a generator or any other iterable X is not [x for x in X]
, but rather list(X)
).
You Write Two Function
//When Expression is Number
public static double? isNull(double? Expression, double? Value)
{
if (Expression ==null)
{
return Value;
}
else
{
return Expression;
}
}
//When Expression is string (Can not send Null value in string Expression
public static string isEmpty(string Expression, string Value)
{
if (Expression == "")
{
return Value;
}
else
{
return Expression;
}
}
They Work Very Well
"How to: Pad a Number with Leading Zeros" http://msdn.microsoft.com/en-us/library/dd260048.aspx
Use the HTML5 "download" attribute
<a href="iphone_user_guide.pdf" download="iPhone User's Guide.PDF">click me</a>
Warning: as of this writing, does not work in IE/Safari, see: caniuse.com/#search=download
Edit: If you're looking for an actual javascript solution please see lajarre's answer
List of One Liners
Let's solve this problem for this array:
var array = ['A', 'B', 'C'];
1. Remove only the first: Use If you are sure that the item exist
array.splice(array.indexOf('B'), 1);
2. Remove only the last: Use If you are sure that the item exist
array.splice(array.lastIndexOf('B'), 1);
3. Remove all occurrences:
array = array.filter(v => v !== 'B');
As stated in other answers, label is an inline element. However, you can apply display: inline-block
to the label and then center with text-align
.
#name_label {
display: inline-block;
width: 90%;
text-align: right;
}
Why display: inline-block
and not display: inline
? For the same reason that you can't align label
, it's inline.
Why display: inline-block
and not display: block
? You could use display: block
, but it will be on another line. display: inline-block
combines the properties of inline
and block
. It's inline, but you can also give it a width, height, and align it.
To output to the screen the last queries ran you can use this:
DB::enableQueryLog(); // Enable query log
// Your Eloquent query executed by using get()
dd(DB::getQueryLog()); // Show results of log
I believe the most recent queries will be at the bottom of the array.
You will have something like that:
array(1) {
[0]=>
array(3) {
["query"]=>
string(21) "select * from "users""
["bindings"]=>
array(0) {
}
["time"]=>
string(4) "0.92"
}
}
(Thanks to Joshua's comment below.)
I'm not sure if this will work exactly, but I thought of
var docwrite = function(doc) {
document.write(doc);
};
This solved the problem with the error messages for me.
SELECT field,datetime_field
FROM database
WHERE datetime_field > (CURRENT_DATE - 1)
Its been some time that I worked on Oracle. But, I think this should work.
split was updated in coreutils release 8.8 (announced 22 Dec 2010) with the --number option to generate a specific number of files. The option --number=l/n generates n files without splitting lines.
http://www.gnu.org/software/coreutils/manual/html_node/split-invocation.html#split-invocation http://savannah.gnu.org/forum/forum.php?forum_id=6662
Reflection.
using System.Reflection;
Vendor vendor = new Vendor();
object tag = vendor.Tag;
Type tagt = tag.GetType();
FieldInfo field = tagt.GetField("test");
string value = field.GetValue(tag);
Use the power wisely. Don't forget error checking. :)
Try utilizing .one()
var button = $("#button"),_x000D_
result = $("#result"),_x000D_
buttonHandler = function buttonHandler(e) {_x000D_
result.html("processing...");_x000D_
$(this).fadeOut(1000, function() {_x000D_
// do stuff_x000D_
setTimeout(function() {_x000D_
// reset `click` event at `button`_x000D_
button.fadeIn({_x000D_
duration: 500,_x000D_
start: function() {_x000D_
result.html("done at " + $.now());_x000D_
}_x000D_
}).one("click", buttonHandler);_x000D_
_x000D_
}, 5000)_x000D_
})_x000D_
};_x000D_
_x000D_
button.one("click", buttonHandler);
_x000D_
#button {_x000D_
width: 50px;_x000D_
height: 50px;_x000D_
background: olive;_x000D_
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js">_x000D_
</script>_x000D_
<div id="result"></div>_x000D_
<div id="button">click</div>
_x000D_
The easiest way to create an object in JavaScript is to use the following syntax :
var test = {_x000D_
a : 5,_x000D_
b : 10,_x000D_
f : function(c) {_x000D_
return this.a + this.b + c;_x000D_
}_x000D_
}_x000D_
_x000D_
console.log(test);_x000D_
console.log(test.f(3));
_x000D_
This works great for storing data in a structured way.
For more complex use cases, however, it's often better to create instances of functions :
function Test(a, b) {_x000D_
this.a = a;_x000D_
this.b = b;_x000D_
this.f = function(c) {_x000D_
return this.a + this.b + c;_x000D_
};_x000D_
}_x000D_
_x000D_
var test = new Test(5, 10);_x000D_
console.log(test);_x000D_
console.log(test.f(3));
_x000D_
This allows you to create multiple objects that share the same "blueprint", similar to how you use classes in eg. Java.
This can still be done more efficiently, however, by using a prototype.
Whenever different instances of a function share the same methods or properties, you can move them to that object's prototype. That way, every instance of a function has access to that method or property, but it doesn't need to be duplicated for every instance.
In our case, it makes sense to move the method f
to the prototype :
function Test(a, b) {_x000D_
this.a = a;_x000D_
this.b = b;_x000D_
}_x000D_
_x000D_
Test.prototype.f = function(c) {_x000D_
return this.a + this.b + c;_x000D_
};_x000D_
_x000D_
var test = new Test(5, 10);_x000D_
console.log(test);_x000D_
console.log(test.f(3));
_x000D_
A simple but effective way to do inheritance in JavaScript, is to use the following two-liner :
B.prototype = Object.create(A.prototype);
B.prototype.constructor = B;
That is similar to doing this :
B.prototype = new A();
The main difference between both is that the constructor of A
is not run when using Object.create
, which is more intuitive and more similar to class based inheritance.
You can always choose to optionally run the constructor of A
when creating a new instance of B
by adding adding it to the constructor of B
:
function B(arg1, arg2) {
A(arg1, arg2); // This is optional
}
If you want to pass all arguments of B
to A
, you can also use Function.prototype.apply()
:
function B() {
A.apply(this, arguments); // This is optional
}
If you want to mixin another object into the constructor chain of B
, you can combine Object.create
with Object.assign
:
B.prototype = Object.assign(Object.create(A.prototype), mixin.prototype);
B.prototype.constructor = B;
function A(name) {_x000D_
this.name = name;_x000D_
}_x000D_
_x000D_
A.prototype = Object.create(Object.prototype);_x000D_
A.prototype.constructor = A;_x000D_
_x000D_
function B() {_x000D_
A.apply(this, arguments);_x000D_
this.street = "Downing Street 10";_x000D_
}_x000D_
_x000D_
B.prototype = Object.create(A.prototype);_x000D_
B.prototype.constructor = B;_x000D_
_x000D_
function mixin() {_x000D_
_x000D_
}_x000D_
_x000D_
mixin.prototype = Object.create(Object.prototype);_x000D_
mixin.prototype.constructor = mixin;_x000D_
_x000D_
mixin.prototype.getProperties = function() {_x000D_
return {_x000D_
name: this.name,_x000D_
address: this.street,_x000D_
year: this.year_x000D_
};_x000D_
};_x000D_
_x000D_
function C() {_x000D_
B.apply(this, arguments);_x000D_
this.year = "2018"_x000D_
}_x000D_
_x000D_
C.prototype = Object.assign(Object.create(B.prototype), mixin.prototype);_x000D_
C.prototype.constructor = C;_x000D_
_x000D_
var instance = new C("Frank");_x000D_
console.log(instance);_x000D_
console.log(instance.getProperties());
_x000D_
Object.create
can be safely used in every modern browser, including IE9+. Object.assign
does not work in any version of IE nor some mobile browsers. It is recommended to polyfill Object.create
and/or Object.assign
if you want to use them and support browsers that do not implement them.
You can find a polyfill for Object.create
here
and one for Object.assign
here.
Based on the other answers, I looked into XmlTextWriter
and came up with the following helper method:
static public string Beautify(this XmlDocument doc)
{
StringBuilder sb = new StringBuilder();
XmlWriterSettings settings = new XmlWriterSettings
{
Indent = true,
IndentChars = " ",
NewLineChars = "\r\n",
NewLineHandling = NewLineHandling.Replace
};
using (XmlWriter writer = XmlWriter.Create(sb, settings)) {
doc.Save(writer);
}
return sb.ToString();
}
It's a bit more code than I hoped for, but it works just peachy.
I found this somewhere else so I won't take credit, but it worked better than any of the solutions above for my mac specific issues (even though this is closed):
tar zc --exclude __MACOSX --exclude .DS_Store -f <archive> <source(s)>
From the manpage for env
(GNU coreutils 6.10):
env - run a program in a modified environment
In theory you could use env
to reset the environment (removing many of the existing environment variables) or add additional environment variables in the script header. Practically speaking, the two versions you mentioned are identical. (Though others have mentioned a good point: specifying python
through env
lets you abstractly specify python
without knowing its path.)
Expanding on Jörn Eyrich answer (upvote his answer if you upvote this one), if you do not have control over the dispatch_async
calls for your blocks, as might be the case for async completion blocks, you can use the GCD groups using dispatch_group_enter
and dispatch_group_leave
directly.
In this example, we're pretending computeInBackground
is something we cannot change (imagine it is a delegate callback, NSURLConnection completionHandler, or whatever), and thus we don't have access to the dispatch calls.
// create a group
dispatch_group_t group = dispatch_group_create();
// pair a dispatch_group_enter for each dispatch_group_leave
dispatch_group_enter(group); // pair 1 enter
[self computeInBackground:1 completion:^{
NSLog(@"1 done");
dispatch_group_leave(group); // pair 1 leave
}];
// again... (and again...)
dispatch_group_enter(group); // pair 2 enter
[self computeInBackground:2 completion:^{
NSLog(@"2 done");
dispatch_group_leave(group); // pair 2 leave
}];
// Next, setup the code to execute after all the paired enter/leave calls.
//
// Option 1: Get a notification on a block that will be scheduled on the specified queue:
dispatch_group_notify(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
NSLog(@"finally!");
});
// Option 2: Block an wait for the calls to complete in code already running
// (as cbartel points out, be careful with running this on the main/UI queue!):
//
// dispatch_group_wait(group, DISPATCH_TIME_FOREVER); // blocks current thread
// NSLog(@"finally!");
In this example, computeInBackground:completion: is implemented as:
- (void)computeInBackground:(int)no completion:(void (^)(void))block {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
NSLog(@"%d starting", no);
sleep(no*2);
block();
});
}
Output (with timestamps from a run):
12:57:02.574 2 starting
12:57:02.574 1 starting
12:57:04.590 1 done
12:57:06.590 2 done
12:57:06.591 finally!
For API 11 and later, can use seekbar's XML attributes(android:rotation="270") for vertical effect.
<SeekBar
android:id="@+id/seekBar1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:rotation="270"/>
For older API level (ex API10), only use Selva's answer:
https://github.com/AndroSelva/Vertical-SeekBar-Android
I guess you could try
table tr td { color: red; }
table tr td table tr td { color: black; }
Or
body table tr td { color: red; }
where 'body' is a selector for your table's parent
But classes are most likely the right way to go here.
One liner:
var yesterday = new Date(Date.now() - 864e5); // 864e5 == 86400000 == 24*60*60*1000
If you need more than one location, you need more than one task. One copy task can copy only from one location (including multiple files) to another one on the node.
- copy: src=/file1 dest=/destination/file1
- copy: src=/file2 dest=/destination/file2
# copy each file over that matches the given pattern
- copy: src={{ item }} dest=/destination/
with_fileglob:
- /files/*
Try to delete the temp files
cd /tmp/
rm -r *
In workbench 6.0 Connect to any of the database. You will see two tabs.
1.Management
2. Schemas
By default Schemas
tab is selected.
Select Management
tab
then select Data Export
.
You will get list of all databases.
select the desired database and and the file name and ther options you wish and start export.
You are done with backup.
Try this:
Define a funciton:
<?php
function phpAlert($msg) {
echo '<script type="text/javascript">alert("' . $msg . '")</script>';
}
?>
Call it like this:
<?php phpAlert( "Hello world!\\n\\nPHP has got an Alert Box" ); ?>
error must be gone.
Just update your eclipse.ini file (you can find it in the root-directory of eclipse) by this:
-vm
path/javaw.exe
for example:
-vm
C:/Program Files/Java/jdk1.7.0_09/jre/bin/javaw.exe
If you facing grant permission access denied problem, you can try mysql_upgrade to fix the problem:
/usr/bin/mysql_upgrade -u root -p
Login as root:
mysql -u root -p
Run this commands:
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost';
mysql> FLUSH PRIVILEGES;
While inserting the data, we have to used character string delimiter (' '
). And, you missed it (' '
) while inserting values which is the reason of your error message. The correction of code is given below:
INSERT INTO LOCATION VALUES(PQ95VM,'HAPPY_STREET','FRANCE');
ScriptManager
control can also be used to reference javascript files. One catch is that the ScriptManager
control needs to be place inside the form
tag. I myself prefer ScriptManager
control and generally place it just above the closing form
tag.
<asp:ScriptManager ID="sm" runat="server">
<Scripts>
<asp:ScriptReference Path="~/Scripts/yourscript.min.js" />
</Scripts>
</asp:ScriptManager>
This post will go through the following topics:
merge
, join
, concat
There are a few options, some simpler than others depending on the use case.
DataFrame.merge
withleft_index
andright_index
(orleft_on
andright_on
using names indexes)
- supports inner/left/right/full
- can only join two at a time
- supports column-column, index-column, index-index joins
DataFrame.join
(join on index)
- supports inner/left (default)/right/full
- can join multiple DataFrames at a time
- supports index-index joins
pd.concat
(joins on index)
- supports inner/full (default)
- can join multiple DataFrames at a time
- supports index-index joins
Setup & Basics
import pandas as pd
import numpy as np
np.random.seed([3, 14])
left = pd.DataFrame(data={'value': np.random.randn(4)},
index=['A', 'B', 'C', 'D'])
right = pd.DataFrame(data={'value': np.random.randn(4)},
index=['B', 'D', 'E', 'F'])
left.index.name = right.index.name = 'idxkey'
left
value
idxkey
A -0.602923
B -0.402655
C 0.302329
D -0.524349
right
value
idxkey
B 0.543843
D 0.013135
E -0.326498
F 1.385076
Typically, an inner join on index would look like this:
left.merge(right, left_index=True, right_index=True)
value_x value_y
idxkey
B -0.402655 0.543843
D -0.524349 0.013135
Other joins follow similar syntax.
Notable Alternatives
DataFrame.join
defaults to joins on the index. DataFrame.join
does a LEFT OUTER JOIN by default, so how='inner'
is necessary here.
left.join(right, how='inner', lsuffix='_x', rsuffix='_y')
value_x value_y
idxkey
B -0.402655 0.543843
D -0.524349 0.013135
Note that I needed to specify the lsuffix
and rsuffix
arguments since join
would otherwise error out:
left.join(right)
ValueError: columns overlap but no suffix specified: Index(['value'], dtype='object')
Since the column names are the same. This would not be a problem if they were differently named.
left.rename(columns={'value':'leftvalue'}).join(right, how='inner')
leftvalue value
idxkey
B -0.402655 0.543843
D -0.524349 0.013135
pd.concat
joins on the index and can join two or more DataFrames at once. It does a full outer join by default, so how='inner'
is required here..
pd.concat([left, right], axis=1, sort=False, join='inner')
value value
idxkey
B -0.402655 0.543843
D -0.524349 0.013135
For more information on concat
, see this post.
To perform an inner join using index of left, column of right, you will use DataFrame.merge
a combination of left_index=True
and right_on=...
.
right2 = right.reset_index().rename({'idxkey' : 'colkey'}, axis=1)
right2
colkey value
0 B 0.543843
1 D 0.013135
2 E -0.326498
3 F 1.385076
left.merge(right2, left_index=True, right_on='colkey')
value_x colkey value_y
0 -0.402655 B 0.543843
1 -0.524349 D 0.013135
Other joins follow a similar structure. Note that only merge
can perform index to column joins. You can join on multiple columns, provided the number of index levels on the left equals the number of columns on the right.
join
and concat
are not capable of mixed merges. You will need to set the index as a pre-step using DataFrame.set_index
.
If your index is named, then from pandas >= 0.23, DataFrame.merge
allows you to specify the index name to on
(or left_on
and right_on
as necessary).
left.merge(right, on='idxkey')
value_x value_y
idxkey
B -0.402655 0.543843
D -0.524349 0.013135
For the previous example of merging with the index of left, column of right, you can use left_on
with the index name of left:
left.merge(right2, left_on='idxkey', right_on='colkey')
value_x colkey value_y
0 -0.402655 B 0.543843
1 -0.524349 D 0.013135
Jump to other topics in Pandas Merging 101 to continue learning:
* you are here
i think this is a best mode to cast to int
public int ByteToint(Byte B){
String comb;
int out=0;
comb=B+"";
salida= Integer.parseInt(comb);
out=out+128;
return out;
}
first comvert byte to String
comb=B+"";
next step is comvert to a int
out= Integer.parseInt(comb);
but byte is in rage of -128 to 127 for this reasone, i think is better use rage 0 to 255 and you only need to do this:
out=out+256;
If you have a base or header template that's included everywhere why not include the favicon there with basic HTML?
<link rel="shortcut icon" type="image/png" href="{% static 'favicon.ico' %}"/>
Here are the four options listed in your question, arranged by freedom of control. You might want to use a different one depending on what you need.
Simply go through values:
array.each
Simply go through indices:
array.each_index
Go through indices + index variable:
for i in array
Control loop count + index variable:
array.length.times do | i |
Ignoring anything else that may or may not be correct with your "revised code", the issue causing the error currently quoted in your question is caused by calling the "count" function with an undefined variable because your didn't quote the string.
count(thisisastring222)
looks for a variable called thisisastring222 to pass to the function called count. For this to work you would have to have defined the variable earlier (e.g. with thisisastring222 = "AStringWith1NumberInIt."
) then your function will do what you want with the contents of the value stored in the variable, not the name of the variable.count("thisisastring222")
hardcodes the string "thisisastring222" into the call, meaning that the count function will work with the exact string passed to it.To fix your call to your function, just add quotes around asdfkasdflasdfl222
changing count(asdfkasdflasdfl222)
to count("asdfkasdflasdfl222")
.
As far as the actual question "How to count digits, letters, spaces for a string in Python", at a glance the rest of the "revised code" looks OK except that the return line is not returning the same variables you've used in the rest of the code.
To fix it without changing anything else in the code, change number
and word
to digit
and letters
, making return number,word,space,other
into return digit,letters,space,other
, or better yet return (digit, letters, space, other)
to match current behavior while also using better coding style and being explicit as to what type of value is returned (in this case, a tuple).
In your html you can pass in an array for the name i.e
<input type="text" name="address[]" />
This way php will receive an array of addresses.
If you have a newer distro with a newer systemd
(systemd
version 236 or newer), you can set the values of StandardOutput
or StandardError
to file:YOUR_ABSPATH_FILENAME
.
Long story:
In newer versions of systemd
there is a relatively new option (the github request is from 2016 ish and the enhancement is merged/closed 2017 ish) where you can set the values of StandardOutput
or StandardError
to file:YOUR_ABSPATH_FILENAME
. The file:path
option is documented in the most recent systemd.exec
man page.
This new feature is relatively new and so is not available for older distros like centos-7 (or any centos before that).
Either your gradle or build need to know where resources are.
This is perfect answer of your problem
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:text="Register" android:id="@+id/register"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:padding="10dip" weight="1" />
<Button
android:text="Not this time" android:id="@+id/cancel"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:padding="10dip" weight="1" />
</LinearLayout>
PHP-FPM is a service that spawns new PHP processes when needed, usually through a fast-cgi module like nginx. You can tell (with a margin of error) by just checking the init.d script e.g. "sudo /etc/init.d/php-fpm status"
What port or unix file socket is being used is up to the configuration, but often is just TCP port 9000. i.e. 127.0.0.1:9000
The best way to tell if it is running correctly is to have nginx running, and setup a virtual host that will fast-cgi pass to PHP-FPM, and just check it with wget or a browser.
I went through this when trying to get a clientcert and private key out of a keystore.
The link above posted by welsh was great, but there was an extra step on my redhat distribution. If curl is built with NSS ( run curl --version
to see if you see NSS listed) then you need to import the keys into an NSS keystore. I went through a bunch of convoluted steps, so this may not be the cleanest way, but it got things working
So export the keys into .p12
keytool -importkeystore -srckeystore $jksfile -destkeystore $p12file \ -srcstoretype JKS -deststoretype PKCS12 \ -srcstorepass $jkspassword -deststorepass $p12password -srcalias $myalias -destalias $myalias \ -srckeypass $keypass -destkeypass $keypass -noprompt
And generate the pem file that holds only the key
echo making ${fileroot}.key.pem openssl pkcs12 -in $p12 -out ${fileroot}.key.pem \ -passin pass:$p12password \ -passout pass:$p12password -nocerts
mkdir ~/nss chmod 700 ~/nss certutil -N -d ~/nss
pks12util -i <mykeys>.p12 -d ~/nss -W <password for cert >
Now curl should work.
curl --insecure --cert <client cert alias>:<password for cert> \ --key ${fileroot}.key.pem <URL>
As I mentioned, there may be other ways to do this, but at least this was repeatable for me. If curl is compiled with NSS support, I was not able to get it to pull the client cert from a file.
That particular package does not include assemblies for dotnet core, at least not at present. You may be able to build it for core yourself with a few tweaks to the project file, but I can't say for sure without diving into the source myself.
%>%
has no builtin meaning but the user (or a package) is free to define operators of the form %whatever%
in any way they like. For example, this function will return a string consisting of its left argument followed by a comma and space and then it's right argument.
"%,%" <- function(x, y) paste0(x, ", ", y)
# test run
"Hello" %,% "World"
## [1] "Hello, World"
The base of R provides %*%
(matrix mulitiplication), %/%
(integer division), %in%
(is lhs a component of the rhs?), %o%
(outer product) and %x%
(kronecker product). It is not clear whether %%
falls in this category or not but it represents modulo.
expm The R package, expm, defines a matrix power operator %^%
. For an example see Matrix power in R .
operators The operators R package has defined a large number of such operators such as %!in%
(for not %in%
). See http://cran.r-project.org/web/packages/operators/operators.pdf
igraph This package defines %--% , %->% and %<-% to select edges.
lubridate This package defines %m+% and %m-% to add and subtract months and %--% to define an interval. igraph also defines %--% .
magrittr In the case of %>%
the magrittr R package has defined it as discussed in the magrittr vignette. See http://cran.r-project.org/web/packages/magrittr/vignettes/magrittr.html
magittr has also defined a number of other such operators too. See the Additional Pipe Operators section of the prior link which discusses %T>%
, %<>%
and %$%
and http://cran.r-project.org/web/packages/magrittr/magrittr.pdf for even more details.
dplyr The dplyr R package used to define a %.%
operator which is similar; however, it has been deprecated and dplyr now recommends that users use %>%
which dplyr imports from magrittr and makes available to the dplyr user. As David Arenburg has mentioned in the comments this SO question discusses the differences between it and magrittr's %>%
: Differences between %.% (dplyr) and %>% (magrittr)
pipeR The R package, pipeR, defines a %>>%
operator that is similar to magrittr's %>% and can be used as an alternative to it. See http://renkun.me/pipeR-tutorial/
The pipeR package also has defined a number of other such operators too. See: http://cran.r-project.org/web/packages/pipeR/pipeR.pdf
postlogic The postlogic package defined %if%
and %unless%
operators.
wrapr The R package, wrapr, defines a dot pipe %.>%
that is an explicit version of %>%
in that it does not do implicit insertion of arguments but only substitutes explicit uses of dot on the right hand side. This can be considered as another alternative to %>%
. See https://winvector.github.io/wrapr/articles/dot_pipe.html
Bizarro pipe. This is not really a pipe but rather some clever base syntax to work in a way similar to pipes without actually using pipes. It is discussed in http://www.win-vector.com/blog/2017/01/using-the-bizarro-pipe-to-debug-magrittr-pipelines-in-r/ The idea is that instead of writing:
1:8 %>% sum %>% sqrt
## [1] 6
one writes the following. In this case we explicitly use dot rather than eliding the dot argument and end each component of the pipeline with an assignment to the variable whose name is dot (.
) . We follow that with a semicolon.
1:8 ->.; sum(.) ->.; sqrt(.)
## [1] 6
Update Added info on expm package and simplified example at top. Added postlogic package.
Use Maven and use the maven-compiler-plugin to explicitly call the actual correct version JDK javac.exe command, because Maven could be running any version; this also catches the really stupid long standing bug in javac that does not spot runtime breaking class version jars and missing classes/methods/properties when compiling for earlier java versions! This later part could have easily been fixed in Java 1.5+ by adding versioning attributes to new classes, methods, and properties, or separate compiler versioning data, so is a quite stupid oversight by Sun and Oracle.
Similar to Ghommey's answer, but this also supports old versions of IE and Firefox.
window.onbeforeunload = function (e) {
var message = "Your confirmation message goes here.",
e = e || window.event;
// For IE and Firefox
if (e) {
e.returnValue = message;
}
// For Safari
return message;
};
This work for me, although its not a good practice. It simply delete all the the associated element with which the object belong.
for (element in homeService) {
delete homeService[element];
}
I have also run into this, it is possible you have a javascript error inside of your react component. Make sure if you are using a dependency you are using the new
operator on the class to instantiate the new instance. Error will throw if
this.classInstance = Class({})
instead use
this.classInstance = new Class({})
you will see in the error chain in the browser
at ReactCompositeComponentWrapper._constructComponentWithoutOwner
that is the giveaway I believe.
I achieved this via -
<p style="display:none">{{user.role="store_user"}}</p>
string.count(substring)
, like in:
>>> "abcdabcva".count("ab")
2
As pointed up in the comments, this is the way to do it for non overlapping occurrences. If you need to count overlapping occurrences, you'd better check the answers at: "Python regex find all overlapping matches?", or just check my other answer below.
In the first place, you should note that PDF and HTML and different formats that hardly have anything in common. If TCPDF allows you to provide input data using HTML and CSS it's because it implements a simple parser for these two languages and tries to figure out how to translate that into PDF. So it's logical that TCPDF only supports a little subset of the HTML and CSS specification and, even in supported stuff, it's probably not as perfect as in first class web browsers.
Said that, the question is: what's supported and what's not? The documentation basically skips the issue and let's you enjoy the trial and error method.
Having a look at the source code, we can see there's a protected method called TCPDF::getHtmlDomArray()
that, among other things, parses CSS declarations. I can see stuff like font-family
, list-style-type
or text-indent
but there's no margin
or padding
as far as I can see and, definitively, there's no float
at all.
To sum up: with TCPDF, you can use CSS for some basic formatting. If you need to convert from HTML to PDF, it's the wrong tool. (If that's the case, may I suggest wkhtmltopdf?)
you can use like operator wildcard to achieve this:
SELECT t.phone,
t.phone2
FROM jewishyellow.users t
WHERE t.phone LIKE '813%'
AND t.phone2 like '[0-9]';
in this way, you could get all phone2 that have a number prefix.
Try This:
using System;
using System.Configuration;
using System.Web.Configuration;
namespace SampleApplication.WebConfig
{
public partial class webConfigFile : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//Helps to open the Root level web.config file.
Configuration webConfigApp = WebConfigurationManager.OpenWebConfiguration("~");
//Modifying the AppKey from AppValue to AppValue1
webConfigApp.AppSettings.Settings["ConnectionString"].Value = "ConnectionString";
//Save the Modified settings of AppSettings.
webConfigApp.Save();
}
}
}
I have the below code for mouse hover and mouse click and it works:
//For Mouse Hover
.thumbnail:hover span{ /*CSS for enlarged image*/
visibility: visible;
text-align:center;
vertical-align:middle;
height: 70%;
width: 80%;
top:auto;
left: 10%;
}
and this code hides the image when you click on it:
.thumbnail:active span {
visibility: hidden;
}
public void itemListToJsonConvert(ArrayList<HashMap<String, String>> list) {
JSONObject jResult = new JSONObject();// main object
JSONArray jArray = new JSONArray();// /ItemDetail jsonArray
for (int i = 0; i < list.size(); i++) {
JSONObject jGroup = new JSONObject();// /sub Object
try {
jGroup.put("ItemMasterID", list.get(i).get("ItemMasterID"));
jGroup.put("ID", list.get(i).get("id"));
jGroup.put("Name", list.get(i).get("name"));
jGroup.put("Category", list.get(i).get("category"));
jArray.put(jGroup);
// /itemDetail Name is JsonArray Name
jResult.put("itemDetail", jArray);
return jResult;
} catch (JSONException e) {
e.printStackTrace();
}
}
}
1 See the list of devices/emulators currently available.
$ adb devices
List of devices attached
G7NZCJ015313309 device emulator-5554 device
9885b6454e46383744 device
2 Run backup on your device/emulator
$ adb -s emulator-5554 backup -f ~/Desktop/data.ab -noapk com.your_app_package.app;
3 Extract data.ab
$ dd if=data.ab bs=1 skip=24 | openssl zlib -d | tar -xvf -;
You will find the database in /db
folder
So this is what I ended up doing
var dateText = moment(someDate).from(new Date());
var startOfToday = moment().startOf('day');
var startOfDate = moment(someDate).startOf('day');
var daysDiff = startOfDate.diff(startOfToday, 'days');
var days = {
'0': 'today',
'-1': 'yesterday',
'1': 'tomorrow'
};
if (Math.abs(daysDiff) <= 1) {
dateText = days[daysDiff];
}
A simple DELETE
before the INSERT
would suffice:
DELETE FROM Table2 WHERE Id = (SELECT Id FROM Table1)
INSERT INTO Table2 (Id, name) SELECT Id, name FROM Table1
Switching Table1
for Table2
depending on which table's Id
and name
pairing you want to preserve.
You can also use package data.table and it's Like function, details given below How to select R data.table rows based on substring match (a la SQL like)
For MySQL, MariaDB
ALTER TABLE [table name] MODIFY COLUMN [column name] [data type] NULL
Use MODIFY COLUMN
instead of ALTER COLUMN
.
from FOLDER_NAME import FILENAME
from FILENAME import CLASS_NAME FUNCTION_NAME
FILENAME is w/o the suffix
This worked for me :
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),R.layout.simple_spinner_item,areas);
Spinner areasSpinner = (Spinner) view.findViewById(R.id.area_spinner);
areasSpinner.setAdapter(adapter);
and in my layout folder I created simple_spinner_item
:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="match_parent"
// add custom fields here
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:gravity="center_vertical"
android:paddingStart="?android:attr/listPreferredItemPaddingStart"
android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
android:minHeight="?android:attr/listPreferredItemHeightSmall"
android:paddingLeft="?android:attr/listPreferredItemPaddingLeft"
android:paddingRight="?android:attr/listPreferredItemPaddingRight" />
From my code, comparing to above solution, the simplest way is to define a layout which contains the fragment, then you could hide or unhide the fragment by controlling the layout attribute which is align with the general way of view. No additional code needed in this case and the additional deployment attributes of the fragment could be moved to the outer layout.
<LinearLayout style="@style/StHorizontalLinearView"
>
<fragment
android:layout_width="match_parent"
android:layout_height="390dp"
android:layout_alignParentTop="true"
/>
</LinearLayout>
DB_CLOSE_DELAY=-1
hbm2ddl closes the connection after creating the table, so h2 discards it.
If you have your connection-url configured like this
jdbc:h2:mem:test
the content of the database is lost at the moment the last connection is closed.
If you want to keep your content you have to configure the url like this
jdbc:h2:mem:test;DB_CLOSE_DELAY=-1
If doing so, h2 will keep its content as long as the vm lives.
Notice the semicolon (;
) rather than colon (:
).
See the In-Memory Databases section of the Features page. To quote:
By default, closing the last connection to a database closes the database. For an in-memory database, this means the content is lost. To keep the database open, add
;DB_CLOSE_DELAY=-1
to the database URL. To keep the content of an in-memory database as long as the virtual machine is alive, usejdbc:h2:mem:test;DB_CLOSE_DELAY=-1
.
As @Alexander solves, the issue is one of async data load - you're rendering immediately and you will not have participants loaded until the async ajax call resolves and populates data
with participants
.
The alternative to the solution they provided would be to prevent render until participants exist, something like this:
render: function() {
if (!this.props.data.participants) {
return null;
}
return (
<ul className="PlayerList">
// I'm the Player List {this.props.data}
// <Player author="The Mini John" />
{
this.props.data.participants.map(function(player) {
return <li key={player}>{player}</li>
})
}
</ul>
);
}
You should find the 'expect' command will do what you need it to do. Its widely available. See here for an example : http://www.thegeekstuff.com/2010/10/expect-examples/
(very rough example)
#!/usr/bin/expect
set pass "mysecret"
spawn /usr/bin/passwd
expect "password: "
send "$pass"
expect "password: "
send "$pass"
Firstly, understand that DateTime
objects aren't formatted. They just store the Year, Month, Day, Hour, Minute, Second, etc as a numeric value and the formatting occurs when you want to represent it as a string somehow. You can compare DateTime
objects without formatting them.
To compare an input date with DateTime.Now
, you need to first parse the input into a date and then compare just the Year/Month/Day portions:
DateTime inputDate;
if(!DateTime.TryParse(inputString, out inputDate))
throw new ArgumentException("Input string not in the correct format.");
if(inputDate.Date == DateTime.Now.Date) {
// Same date!
}
You should also consider that in some Opera versions onload is fired several times and add some hooks:
// fixing Opera 9.26, 10.00
if (doc.readyState && doc.readyState != 'complete') {
// Opera fires load event multiple times
// Even when the DOM is not ready yet
// this fix should not affect other browsers
return;
}
// fixing Opera 9.64
if (doc.body && doc.body.innerHTML == "false") {
// In Opera 9.64 event was fired second time
// when body.innerHTML changed from false
// to server response approx. after 1 sec
return;
}
Code borrowed from Ajax Upload
I suggest such way based on extension methods:
IEnumerable<Int32> countryIDs =
dataTable
.AsEnumerable()
.Where(row => row.Field<String>("CountryName") == countryName)
.Select(row => row.Field<Int32>("CountryID"));
System.Data.DataSetExtensions.dll needs to be referenced.
Here is the answer I gave to a similar question, Simple, easy, works pretty good and does not require anything else than what you already have with Visual Studio.
As others have responded already Clean will remove all artifacts that are generated by the build. But it will leave behind everything else.
If you have some customizations in your MSBuild project this could spell trouble and leave behind stuff you would think it should have deleted.
You can circumvent this problem with a simple change to your .*proj by adding this somewhere near the end :
<Target Name="SpicNSpan"
AfterTargets="Clean">
<RemoveDir Directories="$(OUTDIR)"/>
</Target>
Which will remove everything in your bin folder of the current platform/configuration.
Simply place this line in your Model:
public $timestamps = false;
And that's it!
Example:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model
{
public $timestamps = false;
//
}
To disable timestamps for one operation (e.g. in a controller):
$post->content = 'Your content';
$post->timestamps = false; // Will not modify the timestamps on save
$post->save();
To disable timestamps for all of your Models, create a new BaseModel
file:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class BaseModel extends Model
{
public $timestamps = false;
//
}
Then extend each one of your Models with the BaseModel
, like so:
<?php
namespace App;
class Post extends BaseModel
{
//
}
I simply used this:
<div class="col-md-4 col-sm-4 col-xs-4">
<button type="button" class="btn btn-primary btn-block">Sign In</button>
</div>
import os,sys
# Store current working directory
pwd = os.path.dirname(__file__)
# Append current directory to the python path
sys.path.append(pwd)
Add this script inside head tag:
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
A neat Python solution based on the above answers:
class RunningAverage():
def __init__(self):
self.average = 0
self.n = 0
def __call__(self, new_value):
self.n += 1
self.average = (self.average * (self.n-1) + new_value) / self.n
def __float__(self):
return self.average
def __repr__(self):
return "average: " + str(self.average)
usage:
x = RunningAverage()
x(0)
x(2)
x(4)
print(x)
you can use ng --version for angular version 7
Use ByteArrayInputStream
:
InputStream is = new ByteArrayInputStream(decodedBytes);
Array.from(myMap.keys())
does not work in google application scripts.
Trying to use it results in the error TypeError: Cannot find function from in object function Array() { [native code for Array.Array, arity=1] }
.
To get a list of keys in GAS do this:
var keysList = Object.keys(myMap);
Using mvn eclipse:eclipse
will just generate general eclipse configuration files, this is fine if you have a simple project; but in case of a web-based project such as servlet/jsp you need to manually add Java EE features to eclipse (WTP).
To make the project runnable via eclipse servers portion, Configure Apache for Eclipse: Download and unzip Apache Tomcat somewhere. In Eclipse Windows -> Preferences -> Servers -> Runtime Environments add (Create local server), select your version of Tomcat, Next, Browse to the directory of the Tomcat you unzipped, click Finish.
Window -> Show View -> Servers Add the project to the server list
There may be a problem with the video adapter. At least that's what I had. I picked up problems immediately after updating Windows 10 to the 2004 version. Disabling hardware graphics — solved the problem.
https://www.reddit.com/r/sysadmin/comments/gz6chp/rdp_issues_on_2004_update/
I like the answer of coin. It's simple to understand and works with triangles. However the indexes of his program are sometimes over the bounds. So I post here his code with two tiny corrections:
inline void push_indices(vector<GLushort>& indices, int sectors, int r, int s) {
int curRow = r * sectors;
int nextRow = (r+1) * sectors;
int nextS = (s+1) % sectors;
indices.push_back(curRow + s);
indices.push_back(nextRow + s);
indices.push_back(nextRow + nextS);
indices.push_back(curRow + s);
indices.push_back(nextRow + nextS);
indices.push_back(curRow + nextS);
}
void createSphere(vector<vec3>& vertices, vector<GLushort>& indices, vector<vec2>& texcoords,
float radius, unsigned int rings, unsigned int sectors)
{
float const R = 1./(float)(rings-1);
float const S = 1./(float)(sectors-1);
for(int r = 0; r < rings; ++r) {
for(int s = 0; s < sectors; ++s) {
float const y = sin( -M_PI_2 + M_PI * r * R );
float const x = cos(2*M_PI * s * S) * sin( M_PI * r * R );
float const z = sin(2*M_PI * s * S) * sin( M_PI * r * R );
texcoords.push_back(vec2(s*S, r*R));
vertices.push_back(vec3(x,y,z) * radius);
if(r < rings-1)
push_indices(indices, sectors, r, s);
}
}
}
but what i am doing is purely synchronous
You could use HttpClient
for synchronous requests just fine:
using (var client = new HttpClient())
{
var response = client.GetAsync("http://google.com").Result;
if (response.IsSuccessStatusCode)
{
var responseContent = response.Content;
// by calling .Result you are synchronously reading the result
string responseString = responseContent.ReadAsStringAsync().Result;
Console.WriteLine(responseString);
}
}
As far as why you should use HttpClient
over WebRequest
is concerned, well, HttpClient
is the new kid on the block and could contain improvements over the old client.
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
/sys/sim/source/gm/kg/jl/ls/owow/lsal
Suppose if you want to replace the above with some other info.
COMMAND(:%s/\/sys\/sim\/source\/gm\/kg\/jl\/ls\/owow\/lsal/sys.pkg.mpu.umc.kdk./g)
In this the above will be get replaced with (sys.pkg.mpu.umc.kdk.
) .
Here's a function to pretty up your json: pretty_json
jQuery < 1.8
May I suggest that you use $.ajax()
instead of $.post()
as it's much more customizable.
If you are calling $.post()
, e.g., like this:
$.post( url, data, success, dataType );
You could turn it into its $.ajax()
equivalent:
$.ajax({
type: 'POST',
url: url,
data: data,
success: success,
dataType: dataType,
async:false
});
Please note the async:false
at the end of the $.ajax()
parameter object.
Here you have a full detail of the $.ajax()
parameters: jQuery.ajax() – jQuery API Documentation.
jQuery >=1.8 "async:false" deprecation notice
jQuery >=1.8 won't block the UI during the http request, so we have to use a workaround to stop user interaction as long as the request is processed. For example:
$.ajax()
, and then remove it when the AJAX .done()
callback is called.Please have a look at this answer for an example.
Please check the following file
%SystemRoot%\system32\drivers\etc\host
The line which bind the host name with ip is probably missing a line which bind them togather
127.0.0.1 localhost
If the given line is missing. Add the line in the file
Could you also check your MySQL database's user table and tell us the host column value for the user which you are using. You should have user privilege for both the host "127.0.0.1" and "localhost" and use % as it is a wild char for generic host name.
class calc{
public static void main(String args[])
{
int a, b, c;
char ch;
do{
Scanner s=new Scanner(System.in);
System.out.print("1. Addition\n");
System.out.print("2. Substraction\n");
System.out.print("3. Multiplication\n");
System.out.print("4. Division\n");
System.out.print("5. Exit\n\n");
System.out.print("Enter your choice : ");
ch=s.next().charAt(0);
switch (ch)
{
case '1' :
Addition chose1=new Addition();
chose1.add();
break;
case '2' :
Substraction chose2=new Substraction();
chose2.sub();
break;
case '3' :
Multiplication chose3= new Multiplication();
chose3.multi();
break;
case '4' :
Division chose4=new Division();
chose4.divi();
break;
case '5' :
System.exit(0);
break;
default :
System.out.print("wrong choice!!!");
break;
}
System.out.print("\n--------------------------\n");
}while(ch !=5);
}
}
In the above code when its System.exit(0); and when i press case 5 it exits properly but when i use System.exit(1); and press case 5 it exits with error and again when i try with case 15 it exits properly by this i got to know that, when ever we put any int inside argument it specifies that, it take the character from that position i.e if i put (4) that it means take 5th character from that string if its (3) then it means take 4th character from that inputed string
To set the use of scientific notation in your entire R session, you can use the scipen
option. From the documentation (?options
):
‘scipen’: integer. A penalty to be applied when deciding to print
numeric values in fixed or exponential notation. Positive
values bias towards fixed and negative towards scientific
notation: fixed notation will be preferred unless it is more
than ‘scipen’ digits wider.
So in essence this value determines how likely it is that scientific notation will be triggered. So to prevent scientific notation, simply use a large positive value like 999
:
options(scipen=999)
Try this
<form action="" method="POST" id="formaddtask">
Add Task: <input type="text"name="newtaskname" />
<input type="submit" value="Submit"/>
</form>
//Check if the form is submitted
if($_SERVER['REQUEST_METHOD'] == 'POST' && !empty($_POST['newtaskname'])){
}
For random hash values, some engineers said golden ratio prime number(2654435761) is a bad choice, with my testing results, I found that it's not true; instead, 2654435761 distributes the hash values pretty good.
#define MCR_HashTableSize 2^10
unsigned int
Hash_UInt_GRPrimeNumber(unsigned int key)
{
key = key*2654435761 & (MCR_HashTableSize - 1)
return key;
}
The hash table size must be a power of two.
I have written a test program to evaluate many hash functions for integers, the results show that GRPrimeNumber is a pretty good choice.
I have tried:
With my testing results, I found that Golden Ratio Prime Number always has the fewer empty buckets or zero empty bucket and the shortest collision chain length.
Some hash functions for integers are claimed to be good, but the testing results show that when the total_data_entry / total_bucket_number = 3, the longest chain length is bigger than 10(max collision number > 10), and many buckets are not mapped(empty buckets), which is very bad, compared with the result of zero empty bucket and longest chain length 3 by Golden Ratio Prime Number Hashing.
BTW, with my testing results, I found one version of shifting-xor hash functions is pretty good(It's shared by mikera).
unsigned int Hash_UInt_M3(unsigned int key)
{
key ^= (key << 13);
key ^= (key >> 17);
key ^= (key << 5);
return key;
}
This error is happening because you are just opening html documents directly from the browser. To fix this you will need to serve your code from a webserver and access it on localhost. If you have Apache setup, use it to serve your files. Some IDE's have built in web servers, like JetBrains IDE's, Eclipse...
If you have Node.Js setup then you can use http-server. Just run npm install http-server -g
and you will be able to use it in terminal like http-server C:\location\to\app.
Kirill Fuchs
You can declare local variables in MySQL triggers, with the DECLARE
syntax.
Here's an example:
DROP TABLE IF EXISTS foo;
CREATE TABLE FOO (
i SERIAL PRIMARY KEY
);
DELIMITER //
DROP TRIGGER IF EXISTS bar //
CREATE TRIGGER bar AFTER INSERT ON foo
FOR EACH ROW BEGIN
DECLARE x INT;
SET x = NEW.i;
SET @a = x; -- set user variable outside trigger
END//
DELIMITER ;
SET @a = 0;
SELECT @a; -- returns 0
INSERT INTO foo () VALUES ();
SELECT @a; -- returns 1, the value it got during the trigger
When you assign a value to a variable, you must ensure that the query returns only a single value, not a set of rows or a set of columns. For instance, if your query returns a single value in practice, it's okay but as soon as it returns more than one row, you get "ERROR 1242: Subquery returns more than 1 row
".
You can use LIMIT
or MAX()
to make sure that the local variable is set to a single value.
CREATE TRIGGER bar AFTER INSERT ON foo
FOR EACH ROW BEGIN
DECLARE x INT;
SET x = (SELECT age FROM users WHERE name = 'Bill');
-- ERROR 1242 if more than one row with 'Bill'
END//
CREATE TRIGGER bar AFTER INSERT ON foo
FOR EACH ROW BEGIN
DECLARE x INT;
SET x = (SELECT MAX(age) FROM users WHERE name = 'Bill');
-- OK even when more than one row with 'Bill'
END//
Just use
If @searchType is null means 'return the whole table' then use
WHERE p.[Type] = @SearchType OR @SearchType is NULL
If @searchType is an empty string means 'return the whole table' then use
WHERE p.[Type] = @SearchType OR @SearchType = ''
If @searchType is null or an empty string means 'return the whole table' then use
WHERE p.[Type] = @SearchType OR Coalesce(@SearchType,'') = ''
Tough one for a newbie like me - here is a screenshot that describes it.
Xcode 10.2.1
<input type="text" style="font-size:xxpt;height:xxpx">
Just replace "xx" with whatever values you wish.
I also get this when using the HTTPS everywhere plugin. This plugin has a list of sites that also have https instead of http. So I assume before the actual request is made it is already being cancelled somehow.
So for example when I go to http://stackexchange.com, in Developer I first see a request with status (terminated). This request has some headers, but only the GET, User-Agent, and Accept. No response as well.
Then there is request to https://stackexchange.com with full headers etc.
So I assume it is used for requests that aren't sent.
There may be multiple ways to count the tables of a database. My favorite is this on:
SELECT
COUNT(*)
FROM
`information_schema`.`tables`
WHERE
`table_schema` = 'my_database_name'
;
class list_benefits(object):
def __init__(self):
self.s1 = "More organized code"
self.s2 = "More readable code"
self.s3 = "Easier code reuse"
def build_sentence():
obj=list_benefits()
print obj.s1 + " is a benefit of functions!"
print obj.s2 + " is a benefit of functions!"
print obj.s3 + " is a benefit of functions!"
print build_sentence()
I know it is late answer, maybe some other folk can benefit If you still want to call by "attributes", you could use class with default constructor, and create an instance of the class as mentioned in other answers
The fastest way to check if a string contains another string is using indexOf
:
if (code.indexOf('ST1') !== -1) {
// string code has "ST1" in it
} else {
// string code does not have "ST1" in it
}
I had the exact same problem with version 7.0.0.0, and the lib causing my problem was Microsoft.Rest.ClientRuntime which somehow was referring to the wrong version (6.0.0.0) of Newtonsoft.json, despite the right dependency management in nugget (the right version of newtonsoft.json (7.0.0.0) was installed).
I solved this by applying the redirection above from 6.0.0.0 to 7.0.0.0 (from Kadir Can) in the config file:
<bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="7.0.0.0" />
----> After a few days without changing anything it came up again with the same error. I installed version 6.0.0.0 n updated it to 7.0.0.0 it works fine now.
100% robust approach.
In my case, I didn't have access to the XML layout source file, since I get Checkbox from a 3-rd party MaterialDialog lib. So I have to solve this programmatically.
res/color/checkbox_tinit_dark_theme.xml:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="@color/white"
android:state_checked="false"/>
<item android:color="@color/positiveButtonBg"
android:state_checked="true"/>
</selector>
Then apply it to the checkbox:
ColorStateList darkStateList = ContextCompat.getColorStateList(getContext(), R.color.checkbox_tint_dark_theme);
CompoundButtonCompat.setButtonTintList(checkbox, darkStateList);
P.S. In addition if someone is interested, here is how you can get your checkbox from MaterialDialog dialog (if you set it with .checkBoxPromptRes(...)
):
CheckBox checkbox = (CheckBox) dialog.getView().findViewById(R.id.md_promptCheckbox);
Hope this helps.
This will gives you basic idea
String str="";
String str1="";
Scanner S=new Scanner(System.in);
System.out.println("Enter the string");
str=S.nextLine();
int length=str.length();
for(int i=0;i<length;i++)
{
str1=str.substring(1, length-1);
}
System.out.println(str1);
And a key point - although TRUNCATE TABLE seems like a DELETE with no WHERE clause, TRUNCATE is not DML, it is DDL. DELETE requires a COMMIT, but TRUNCATE does not.
To remove cached .idea/ directory.
e.g. git rm -r --cached .idea
With jquery you can do it like:
$('img').click(function(){
$('#foo').css('background-color', 'red').css('color', 'white');
});
this applies for all img
tags you should set an id
attribute for it like image
and then:
$('#image').click(function(){
$('#foo').css('background-color', 'red').css('color', 'white');
});
^\w{14}$
in Perl and any Perl-style regex.
If you want to learn more about regular expressions - or just need a handy reference - the Wikipedia Entry on Regular Expressions is actually pretty good.
Take a closer look at the ?axis
documentation. If you look at the description of the labels
argument, you'll see that it is:
"a logical value specifying whether (numerical) annotations are
to be made at the tickmarks,"
So, just change it to true, and you'll get your tick labels.
x <- seq(10,200,10)
y <- runif(x)
plot(x,y,xaxt='n')
axis(side = 1, at = x,labels = T)
# Since TRUE is the default for labels, you can just use axis(side=1,at=x)
Be careful that if you don't stretch your window width, then R might not be able to write all your labels in. Play with the window width and you'll see what I mean.
It's too bad that you had such trouble finding documentation! What were your search terms? Try typing r axis
into Google, and the first link you will get is that Quick R page that I mentioned earlier. Scroll down to "Axes", and you'll get a very nice little guide on how to do it. You should probably check there first for any plotting questions, it will be faster than waiting for a SO reply.
It should be noted that not only will the caret (^) behave differently within the brackets, it will have the opposite result of placing it outside of the brackets. Placing the caret where you have it will search for all strings NOT beginning with the content you placed within the brackets. You also would want to place a period before the asterisk in between your brackets as with grep, it also acts as a "wildcard".
grep ^[.rwx].*[0-9]$
This should work for you, I noticed that some posters used a character class in their expressions which is an effective method as well, but you were not using any in your original expression so I am trying to get one as close to yours as possible explaining every minor change along the way so that it is better understood. How can we learn otherwise?
With the advent of ES2015 Object.assign and computed property names the OP's code boils down to:
var obj = Object.assign.apply({}, $(itemsFromDom).map((i, el) => ({[el.id]: el.value})));
The following would do but only will replace one occurence:
"string".replace('/', 'ForwardSlash');
For a global replacement, or if you prefer regular expressions, you just have to escape the slash:
"string".replace(/\//g, 'ForwardSlash');
Yes, I couldn't see how to use 'default' in the migration generator command either but was able to specify a default value for a new string column as follows by amending the generated migration file before applying "rake db:migrate":
class AddColumnToWidgets < ActiveRecord::Migration
def change
add_column :widgets, :colour, :string, default: 'red'
end
end
This adds a new column called 'colour' to my 'Widget' model and sets the default 'colour' of new widgets to 'red'.
RewriteRule ^(.*)foobar(.*)$ http://www.example.com/index.php [L,R=301]
(No space inside your website)
Short answer: no (easy?) way, but you can do something that serves your purpose.
I've done a similar tool (a small command that, given a description of a project, sets environment, paths, directories, etc.). What I do is set-up everything and then spawn a shell with:
spawn('bash', ['-i'], {
cwd: new_cwd,
env: new_env,
stdio: 'inherit'
});
After execution, you'll be on a shell with the new directory (and, in my case, environment). Of course you can change bash for whatever shell you prefer. The main differences with what you originally asked for are:
However, for me, that differences are desirable.
There doesn't appear to be an external way to hack the behaviour of the executables.
You could modify the Chrome(ium) executables as this information is obviously compiled in. That approach brings a lot of problems with support and automatic upgrades so you probably want to avoid doing that. You also need to understand how to make the changes to the binaries which is not something most people can pick up in a few days.
If you compile your own browser you are creating a support issue for yourself as you are stuck with a specific revision. If you want to get new features and bug fixes you will have to recompile. All of this involves tracking Chrome development for bugs and build breakages - not something that a web developer should have to do.
I'd follow @BenSwayne's advice for now, but it might be worth thinking about doing some of the work outside of the client (the web browser) and putting it in a background process running on the same or different machines. This process can handle many more connections and you are just responsible for getting the data back from it. Since it is local(ish) you'll get results back quickly even with minimal connections.
In your button1_click function you are using '==' for button2.Enabled == true;
This should be button2.Enabled = true;
You can use contains
(this works with an arbitrary sequence):
df.filter($"foo".contains("bar"))
like
(SQL like with SQL simple regular expression whith _
matching an arbitrary character and %
matching an arbitrary sequence):
df.filter($"foo".like("bar"))
or rlike
(like with Java regular expressions):
df.filter($"foo".rlike("bar"))
depending on your requirements. LIKE
and RLIKE
should work with SQL expressions as well.
<select>
<option value="" disabled selected hidden>Select an Option</option>
<option value="one">Option 1</option>
<option value="two">Option 2</option>
</select>
Not php.ini file, but a way around it. Go to GoDaddy's
Files > Backup > Restore a MySQL Database Backup
Choose your file and click Upload. No timeouts. Rename the DB if needed, and assign a user in
Databases > MySQL Databases
%zd
works for NSIntegers (%tu
for NSUInteger) with no casts and no warnings on both 32-bit and 64-bit architectures. I have no idea why this is not the "recommended way".
NSString *string = [NSString stringWithFormat:@"%zd", month];
If you're interested in why this works see this question.
Time complexity is O(E+V)
instead of O(2E+V)
because if the time complexity is n^2+2n+7 then it is written as O(n^2).
Hence, O(2E+V) is written as O(E+V)
because difference between n^2 and n matters but not between n and 2n.
Use malloc
and free
only for allocating memory that is going to be managed by c-centric libraries and APIs. Use new
and delete
(and the []
variants) for everything that you control.
I wanted to encrypt and decrypt the string as a readable string.
Here is a very simple quick example in C# Visual Studio 2019 WinForms based on the answer from @Pradip
.
Right click project > properties > settings > Create a username
and password
setting.
Now you can leverage those settings you just created. Here I save the username
and password
but only encrypt the password
in it's respectable value field in the user.config
file.
Example of the encrypted string in the user.config
file.
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<userSettings>
<secure_password_store.Properties.Settings>
<setting name="username" serializeAs="String">
<value>admin</value>
</setting>
<setting name="password" serializeAs="String">
<value>AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAAQpgaPYIUq064U3o6xXkQOQAAAAACAAAAAAAQZgAAAAEAACAAAABlQQ8OcONYBr9qUhH7NeKF8bZB6uCJa5uKhk97NdH93AAAAAAOgAAAAAIAACAAAAC7yQicDYV5DiNp0fHXVEDZ7IhOXOrsRUbcY0ziYYTlKSAAAACVDQ+ICHWooDDaUywJeUOV9sRg5c8q6/vizdq8WtPVbkAAAADciZskoSw3g6N9EpX/8FOv+FeExZFxsm03i8vYdDHUVmJvX33K03rqiYF2qzpYCaldQnRxFH9wH2ZEHeSRPeiG</value>
</setting>
</secure_password_store.Properties.Settings>
</userSettings>
</configuration>
Full Code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Security;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace secure_password_store
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Exit_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void Login_Click(object sender, EventArgs e)
{
if (checkBox1.Checked == true)
{
Properties.Settings.Default.username = textBox1.Text;
Properties.Settings.Default.password = EncryptString(ToSecureString(textBox2.Text));
Properties.Settings.Default.Save();
}
else if (checkBox1.Checked == false)
{
Properties.Settings.Default.username = "";
Properties.Settings.Default.password = "";
Properties.Settings.Default.Save();
}
MessageBox.Show("{\"data\": \"some data\"}","Login Message Alert",MessageBoxButtons.OK, MessageBoxIcon.Information);
}
private void DecryptString_Click(object sender, EventArgs e)
{
SecureString password = DecryptString(Properties.Settings.Default.password);
string readable = ToInsecureString(password);
textBox4.AppendText(readable + Environment.NewLine);
}
private void Form_Load(object sender, EventArgs e)
{
//textBox1.Text = "UserName";
//textBox2.Text = "Password";
if (Properties.Settings.Default.username != string.Empty)
{
textBox1.Text = Properties.Settings.Default.username;
checkBox1.Checked = true;
SecureString password = DecryptString(Properties.Settings.Default.password);
string readable = ToInsecureString(password);
textBox2.Text = readable;
}
groupBox1.Select();
}
static byte[] entropy = Encoding.Unicode.GetBytes("SaLtY bOy 6970 ePiC");
public static string EncryptString(SecureString input)
{
byte[] encryptedData = ProtectedData.Protect(Encoding.Unicode.GetBytes(ToInsecureString(input)),entropy,DataProtectionScope.CurrentUser);
return Convert.ToBase64String(encryptedData);
}
public static SecureString DecryptString(string encryptedData)
{
try
{
byte[] decryptedData = ProtectedData.Unprotect(Convert.FromBase64String(encryptedData),entropy,DataProtectionScope.CurrentUser);
return ToSecureString(Encoding.Unicode.GetString(decryptedData));
}
catch
{
return new SecureString();
}
}
public static SecureString ToSecureString(string input)
{
SecureString secure = new SecureString();
foreach (char c in input)
{
secure.AppendChar(c);
}
secure.MakeReadOnly();
return secure;
}
public static string ToInsecureString(SecureString input)
{
string returnValue = string.Empty;
IntPtr ptr = System.Runtime.InteropServices.Marshal.SecureStringToBSTR(input);
try
{
returnValue = System.Runtime.InteropServices.Marshal.PtrToStringBSTR(ptr);
}
finally
{
System.Runtime.InteropServices.Marshal.ZeroFreeBSTR(ptr);
}
return returnValue;
}
private void EncryptString_Click(object sender, EventArgs e)
{
Properties.Settings.Default.password = EncryptString(ToSecureString(textBox2.Text));
textBox3.AppendText(Properties.Settings.Default.password.ToString() + Environment.NewLine);
}
}
}
I think when you define a function with "var foo = function() {...};
", the function is only defined after that line. In other words, try this:
var replaceHtmlEntites = (function() {
var translate_re = /&(nbsp|amp|quot|lt|gt);/g;
var translate = {
"nbsp": " ",
"amp" : "&",
"quot": "\"",
"lt" : "<",
"gt" : ">"
};
return function(s) {
return ( s.replace(translate_re, function(match, entity) {
return translate[entity];
}) );
}
})();
var cleanText = text.replace(/^\xa0*([^\xa0]*)\xa0*$/g,"");
cleanText = replaceHtmlEntities(text);
Edit: Also, only use "var
" the first time you declare a variable (you're using it twice on the cleanText
variable).
Edit 2: The problem is the spelling of the function name. You have "var replaceHtmlEntites =". It should be "var replaceHtmlEntities ="
First of all store $date=$_POST['your date field name'];
insert into **Your_Table Name** values('$date',**other fields**);
You must contain date in single cote (' ')
I hope it is helps.
I know the question is for a pandas
df but in the case the shuffle occurs by row (column order changed, row order unchanged), then the columns names do not matter anymore and it could be interesting to use an np.array
instead, then np.apply_along_axis()
will be what you are looking for.
If that is acceptable then this would be helpful, note it is easy to switch the axis along which the data is shuffled.
If you panda data frame is named df
, maybe you can:
values = df.values
, np.array
from values
np.array
by row or columnnp.array
a = np.array([[10, 11, 12], [20, 21, 22], [30, 31, 32],[40, 41, 42]])
print(a)
[[10 11 12]
[20 21 22]
[30 31 32]
[40 41 42]]
print(np.apply_along_axis(np.random.permutation, 1, a))
[[11 12 10]
[22 21 20]
[31 30 32]
[40 41 42]]
print(np.apply_along_axis(np.random.permutation, 0, a))
[[40 41 32]
[20 31 42]
[10 11 12]
[30 21 22]]
print(a)
[[10 11 12]
[20 21 22]
[30 31 32]
[40 41 42]]
this worked for me
sudo letsencrypt certonly -a webroot --webroot-path=/var/www/html -d
domain.com -d www.domain.com
>>> sys.stdout.write(1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: expected a string or other character buffer object
>>> sys.stdout.write("a")
a>>> sys.stdout.write("a") ; print(1)
a1
Observing the example above:
sys.stdout.write
won't write non-string object, but print
will
sys.stdout.write
won't add a new line symbol in the end, but print
will
If we dive deeply,
sys.stdout
is a file object which can be used for the output of print()
if file argument of print()
is not specified, sys.stdout
will be used
I do not work with google android but I think you'll find it's not that hard to get this working. If you read the relevant bit of the java tutorial you'll see that a registered cookiehandler gets callbacks from the HTTP code.
So if there is no default (have you checked if CookieHandler.getDefault()
really is null?) then you can simply extend CookieHandler, implement put/get and make it work pretty much automatically. Be sure to consider concurrent access and the like if you go that route.
edit: Obviously you'd have to set an instance of your custom implementation as the default handler through CookieHandler.setDefault()
to receive the callbacks. Forgot to mention that.
I came across the same problem. To be precise, I have two branches A
and B
with the same files but a different programming interface in some files. Now the methods of file f
, which is independent of the interface differences in the two branches, were changed in branch B
, but the change is important for both branches. Thus, I need to merge just file f
of branch B
into file f
of branch A
.
A simple command already solved the problem for me if I assume that all changes are committed in both branches A
and B
:
git checkout A
git checkout --patch B f
The first command switches into branch A
, into where I want to merge B
's version of the file f
. The second command patches the file f
with f
of HEAD
of B
. You may even accept/discard single parts of the patch. Instead of B
you can specify any commit here, it does not have to be HEAD
.
Community edit: If the file f
on B
does not exist on A
yet, then omit the --patch
option. Otherwise, you'll get a "No Change." message.
To hopefully make all of this a little more concrete, here’s a worked example of configuring a Spark app to use as much of the cluster as possible: Imagine a cluster with six nodes running NodeManagers, each equipped with 16 cores and 64GB of memory. The NodeManager capacities, yarn.nodemanager.resource.memory-mb and yarn.nodemanager.resource.cpu-vcores, should probably be set to 63 * 1024 = 64512 (megabytes) and 15 respectively. We avoid allocating 100% of the resources to YARN containers because the node needs some resources to run the OS and Hadoop daemons. In this case, we leave a gigabyte and a core for these system processes. Cloudera Manager helps by accounting for these and configuring these YARN properties automatically.
The likely first impulse would be to use --num-executors 6 --executor-cores 15 --executor-memory 63G. However, this is the wrong approach because:
63GB + the executor memory overhead won’t fit within the 63GB capacity of the NodeManagers. The application master will take up a core on one of the nodes, meaning that there won’t be room for a 15-core executor on that node. 15 cores per executor can lead to bad HDFS I/O throughput.
A better option would be to use --num-executors 17 --executor-cores 5 --executor-memory 19G. Why?
This config results in three executors on all nodes except for the one with the AM, which will have two executors. --executor-memory was derived as (63/3 executors per node) = 21. 21 * 0.07 = 1.47. 21 – 1.47 ~ 19.
The explanation was given in an article in Cloudera's blog, How-to: Tune Your Apache Spark Jobs (Part 2).
I recommend using String Interpolation:
jq '.users[] | "\(.first) \(.last)"'
You are looking to see if a single value is in an array. Use in_array
.
However note that case is important, as are any leading or trailing spaces. Use var_dump
to find out the length of the strings too, and see if they fit.
Sorry, but many examples as "improved design" still smell horribly or can be extremely misleading. Having try { } catch { log; throw } is just utterly pointless. Exception logging should be done in central place inside the application. exceptions bubble up the stacktrace anyway, why not log them somewhere up and close to the borders of the system?
Caution should be used when you serialize your context (i.e. DTO in one given example) just into the log message. It can easily contain sensitive information one might not want to reach the hands of all the people who can access the log files. And if you don't add any new information to the exception, I really don't see the point of exception wrapping. Good old Java has some point for that, it requires caller to know what kind of exceptions one should expect then calling the code. Since you don't have this in .NET, wrapping doesn't do any good on at least 80% of the cases I've seen.
You have a few options depending on why you want to return different types.
a) You can just return an object, and the caller can cast it (possibly after type checks) to what they want. This means of course, that you lose a lot of the advantages of static typing.
b) If the types returned all have a 'requirement' in common, you might be able to use generics with constriants.
c) Create a common interface between all of the possible return types and then return the interface.
d) Switch to F# and use pattern matching and discriminated unions. (Sorry, slightly tongue in check there!)
Alternatively to a redirect, if it is calling your own code, you could use this:
actionContext.Result = new RedirectToRouteResult(
new RouteValueDictionary(new { controller = "Home", action = "Error" })
);
actionContext.Result.ExecuteResult(actionContext.Controller.ControllerContext);
It is not a pure redirect but gives a similar result without unnecessary overhead.
Well you're casting OrdersPerHour
to an int?
OrdersPerHour = (int?)dbcommand.ExecuteScalar();
Yet your method signature is int
:
static int OrdersPerHour(string User)
The two have to match.
Also a quick suggestion -> Use parameters in your query, something like:
string query = "SELECT COUNT(ControlNumber) FROM Log WHERE DateChanged > ? AND User = ? AND Log.EndStatus in ('Needs Review', 'Check Search', 'Vision Delivery', 'CA Review', '1TSI To Be Delivered')";
OleDbCommand dbcommand = new OleDbCommand(query, conn);
dbcommand.Parameters.Add(curTime.AddHours(-1));
dbcommand.Parameters.Add(User);
Batch uses the less than and greater than brackets as input and output pipes.
>file.ext
Using only one output bracket like above will overwrite all the information in that file.
>>file.ext
Using the double right bracket will add the next line to the file.
(
echo
echo
)<file.ext
This will execute the parameters based on the lines of the file. In this case, we are using two lines that will be typed using "echo". The left bracket touching the right parenthesis bracket means that the information from that file will be piped into those lines.
I have compiled an example-only read/write file. Below is the file broken down into sections to explain what each part does.
@echo off
echo TEST R/W
set SRU=0
SRU can be anything in this example. We're actually setting it to prevent a crash if you press Enter too fast.
set /p SRU=Skip Save? (y):
if %SRU%==y goto read
set input=1
set input2=2
set /p input=INPUT:
set /p input2=INPUT2:
Now, we need to write the variables to a file.
(echo %input%)> settings.cdb
(echo %input2%)>> settings.cdb
pause
I use .cdb as a short form for "Command Database". You can use any extension. The next section is to test the code from scratch. We don't want to use the set variables that were run at the beginning of the file, we actually want them to load FROM the settings.cdb we just wrote.
:read
(
set /p input=
set /p input2=
)<settings.cdb
So, we just piped the first two lines of information that you wrote at the beginning of the file (which you have the option to skip setting the lines to check to make sure it's working) to set the variables of input and input2.
echo %input%
echo %input2%
pause
if %input%==1 goto newecho
pause
exit
:newecho
echo If you can see this, good job!
pause
exit
This displays the information that was set while settings.cdb was piped into the parenthesis. As an extra good-job motivator, pressing enter and setting the default values which we set earlier as "1" will return a good job message. Using the bracket pipes goes both ways, and is much easier than setting the "FOR" stuff. :)
OK, based on some of the previous answers, I am expecting to get downvoted for this, but, I think you are delusional to think you can learn, on your own, how to program in Java in 10 weeks with no programming background. No person, with NO programming experience, other than some sort of prodigy, is going to learn to program in Java or almost any language in 10 weeks.
For clarity, copying and running hello world from a book does not make you a programmer. Hell, it will most likely take days just to get that working in some IDE.
Now, can you study and potentially pass some test? Maybe, but that depends on the depth and format of the test.
If I asked if I could become a doctor in 10 weeks, I would get laughed at for asking, so I am somewhat surprised at the answers that indicate that it is somewhat possible. I can stick a bandaid on my daughter now, but it hardly makes me a medical professional, it just means I managed their version of hello world.
I tried this in angular 8 :
create Model :
export class Model { YourDate: string | Date; }
in your component
model : Model;
model.YourDate = new Date();
send Date to your API for saving
When loading your data from API you will make this :
model.YourDate = new Date(model.YourDate+"Z");
you will get your date correctly with your time zone.
You can use all
> all(1:6 %in% 0:36)
[1] TRUE
> all(1:60 %in% 0:36)
[1] FALSE
On a similar note, if you want to check whether any of the elements is TRUE you can use any
> any(1:6 %in% 0:36)
[1] TRUE
> any(1:60 %in% 0:36)
[1] TRUE
> any(50:60 %in% 0:36)
[1] FALSE
What really helped me to change the type of the object in MondoDB was just this simple line, perhaps mentioned before here...:
db.Users.find({age: {$exists: true}}).forEach(function(obj) {
obj.age = new NumberInt(obj.age);
db.Users.save(obj);
});
Users are my collection and age is the object which had a string instead of an integer (int32).
Another modification:
function update() {
$.get("response.php", function(data) {
$("#some_div").html(data);
window.setTimeout(update, 10000);
});
}
The difference with this is that it waits 10 seconds AFTER the ajax call is one. So really the time between refreshes is 10 seconds + length of ajax call. The benefit of this is if your server takes longer than 10 seconds to respond, you don't get two (and eventually, many) simultaneous AJAX calls happening.
Also, if the server fails to respond, it won't keep trying.
I've used a similar method in the past using .ajax to handle even more complex behaviour:
function update() {
$("#notice_div").html('Loading..');
$.ajax({
type: 'GET',
url: 'response.php',
timeout: 2000,
success: function(data) {
$("#some_div").html(data);
$("#notice_div").html('');
window.setTimeout(update, 10000);
},
error: function (XMLHttpRequest, textStatus, errorThrown) {
$("#notice_div").html('Timeout contacting server..');
window.setTimeout(update, 60000);
}
}
This shows a loading message while loading (put an animated gif in there for typical "web 2.0" style). If the server times out (in this case takes longer than 2s) or any other kind of error happens, it shows an error, and it waits for 60 seconds before contacting the server again.
This can be especially beneficial when doing fast updates with a larger number of users, where you don't want everyone to suddenly cripple a lagging server with requests that are all just timing out anyways.
Simply comparing the textfield object to the empty string ""
is not the right way to go about this. You have to compare the textfield's text
property, as it is a compatible type and holds the information you are looking for.
@IBAction func Button(sender: AnyObject) {
if textField1.text == "" || textField2.text == "" {
// either textfield 1 or 2's text is empty
}
}
Swift 2.0:
Guard:
guard let text = descriptionLabel.text where !text.isEmpty else {
return
}
text.characters.count //do something if it's not empty
if:
if let text = descriptionLabel.text where !text.isEmpty
{
//do something if it's not empty
text.characters.count
}
Swift 3.0:
Guard:
guard let text = descriptionLabel.text, !text.isEmpty else {
return
}
text.characters.count //do something if it's not empty
if:
if let text = descriptionLabel.text, !text.isEmpty
{
//do something if it's not empty
text.characters.count
}
I couldn't find the code in the doc suggested by the accepted answer but I found the updated equivalent here:
File System Programming Guide :: Accessing Files and Directories »
- (NSURL*)applicationDataDirectory {
NSFileManager* sharedFM = [NSFileManager defaultManager];
NSArray* possibleURLs = [sharedFM URLsForDirectory:NSApplicationSupportDirectory
inDomains:NSUserDomainMask];
NSURL* appSupportDir = nil;
NSURL* appDirectory = nil;
if ([possibleURLs count] >= 1) {
// Use the first directory (if multiple are returned)
appSupportDir = [possibleURLs objectAtIndex:0];
}
// If a valid app support directory exists, add the
// app's bundle ID to it to specify the final directory.
if (appSupportDir) {
NSString* appBundleID = [[NSBundle mainBundle] bundleIdentifier];
appDirectory = [appSupportDir URLByAppendingPathComponent:appBundleID];
}
return appDirectory;
}
It discourages use of NSSearchPathForDirectoriesInDomain:
The NSSearchPathForDirectoriesInDomains function behaves like the URLsForDirectory:inDomains: method but returns the directory’s location as a string-based path. You should use the URLsForDirectory:inDomains: method instead.
Here are some other useful directory constants to play with. No doubt not all of these are supported in iOS. Also you can use the NSHomeDirectory() function which:
In iOS, the home directory is the application’s sandbox directory. In OS X, it is the application’s sandbox directory or the current user’s home directory (if the application is not in a sandbox)
From NSPathUtilities.h
NSApplicationDirectory = 1, // supported applications (Applications)
NSDemoApplicationDirectory, // unsupported applications, demonstration versions (Demos)
NSDeveloperApplicationDirectory, // developer applications (Developer/Applications). DEPRECATED - there is no one single Developer directory.
NSAdminApplicationDirectory, // system and network administration applications (Administration)
NSLibraryDirectory, // various documentation, support, and configuration files, resources (Library)
NSDeveloperDirectory, // developer resources (Developer) DEPRECATED - there is no one single Developer directory.
NSUserDirectory, // user home directories (Users)
NSDocumentationDirectory, // documentation (Documentation)
NSDocumentDirectory, // documents (Documents)
NSCoreServiceDirectory, // location of CoreServices directory (System/Library/CoreServices)
NSAutosavedInformationDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 11, // location of autosaved documents (Documents/Autosaved)
NSDesktopDirectory = 12, // location of user's desktop
NSCachesDirectory = 13, // location of discardable cache files (Library/Caches)
NSApplicationSupportDirectory = 14, // location of application support files (plug-ins, etc) (Library/Application Support)
NSDownloadsDirectory NS_ENUM_AVAILABLE(10_5, 2_0) = 15, // location of the user's "Downloads" directory
NSInputMethodsDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 16, // input methods (Library/Input Methods)
NSMoviesDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 17, // location of user's Movies directory (~/Movies)
NSMusicDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 18, // location of user's Music directory (~/Music)
NSPicturesDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 19, // location of user's Pictures directory (~/Pictures)
NSPrinterDescriptionDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 20, // location of system's PPDs directory (Library/Printers/PPDs)
NSSharedPublicDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 21, // location of user's Public sharing directory (~/Public)
NSPreferencePanesDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 22, // location of the PreferencePanes directory for use with System Preferences (Library/PreferencePanes)
NSApplicationScriptsDirectory NS_ENUM_AVAILABLE(10_8, NA) = 23, // location of the user scripts folder for the calling application (~/Library/Application Scripts/code-signing-id)
NSItemReplacementDirectory NS_ENUM_AVAILABLE(10_6, 4_0) = 99, // For use with NSFileManager's URLForDirectory:inDomain:appropriateForURL:create:error:
NSAllApplicationsDirectory = 100, // all directories where applications can occur
NSAllLibrariesDirectory = 101, // all directories where resources can occur
NSTrashDirectory NS_ENUM_AVAILABLE(10_8, NA) = 102 // location of Trash directory
And finally, some convenience methods in an NSURL category http://club15cc.com/code/ios/easy-ios-file-directory-paths-with-this-handy-nsurl-category
This would be the simplest solution!
std::vector<double> v (5);
for(auto itr = v.begin();itr != v.end();++itr){
auto current_loop_index = itr - v.begin();
std::cout << current_loop_index << std::endl;
}
Tested on gcc-9 with -std=c++11
flag
Output:
0
1
2
3
4
Take a look at the Clay library:
It provides something similar to the ExpandoObject but with a bunch of extra features. Here is blog post explaining how to use it:
http://weblogs.asp.net/bleroy/archive/2010/08/18/clay-malleable-c-dynamic-objects-part-2.aspx
(be sure to read the IPerson interface example)
If you normalize your data first, then you can avoid all the very complex regular expressions required to validate phone numbers. From my experience, complicated regex patterns can have two unwanted side effects: (1) they can have unexpected behavior that would be a pain to debug later, and (2) they can be slower than simpler regex patterns, which may become noticeable when you are executing regex in a loop.
By keeping your regular expressions as simple as possible, you reduce these risks and your code will be easier for others to follow, partly because it will be more predictable. To use your phone number example, first we can normalize the value by stripping out all non-digits like this:
value = $.trim(value).replace(/\D/g, '');
Now your regex pattern for a US phone number (or any other locale) can be much simpler:
/^1?\d{10}$/
Not only is the regular expression much simpler, it is also easier to follow what's going on: a value optionally leading with number one (US country code) followed by ten digits. If you want to format the validated value to make it look pretty, then you can use this slightly longer regex pattern:
/^1?(\d{3})(\d{3})(\d{4})$/
This means an optional leading number one followed by three digits, another three digits, and ending with four digits. With each group of numbers memorized, you can output it any way you want. Here's a codepen using jQuery Validation to illustrate this for two locales (Singapore and US):
Three important steps - How to Task Schedule an excel.xls(m) file
simply:
IN MORE DETAIL...
`
' a .vbs file is just a text file containing visual basic code that has the extension renamed from .txt to .vbs
'Write Excel.xls Sheet's full path here
strPath = "C:\RodsData.xlsm"
'Write the macro name - could try including module name
strMacro = "Update" ' "Sheet1.Macro2"
'Create an Excel instance and set visibility of the instance
Set objApp = CreateObject("Excel.Application")
objApp.Visible = True ' or False
'Open workbook; Run Macro; Save Workbook with changes; Close; Quit Excel
Set wbToRun = objApp.Workbooks.Open(strPath)
objApp.Run strMacro ' wbToRun.Name & "!" & strMacro
wbToRun.Save
wbToRun.Close
objApp.Quit
'Leaves an onscreen message!
MsgBox strPath & " " & strMacro & " macro and .vbs successfully completed!", vbInformation
'
`
set Program/script: = C:\Windows\System32\cscript.exe
set Add arguments (optional): = C:\MyVbsFile.vbs
That should work.
Let me know!
Rod Bowen
If you bother creating a sample project and adding your 3rd party dependency to that, then you can run the following in order to see the full hierarchy of the dependencies.
You can search for a specific artifact using this maven command:
mvn dependency:tree -Dverbose -Dincludes=[groupId]:[artifactId]:[type]:[version]
According to the documentation:
where each pattern segment is optional and supports full and partial * wildcards. An empty pattern segment is treated as an implicit wildcard.
Imagine you are trying to find 'log4j-1.2-api' jar file among different modules of your project:
mvn dependency:tree -Dverbose -Dincludes=org.apache.logging.log4j:log4j-1.2-api
more information can be found here.
Edit: Please note that despite the advantages of using verbose parameter, it might not be so accurate in some conditions. Because it uses Maven 2 algorithm and may give wrong results when used with Maven 3.
Here a completely working example
package main
import (
// Standard library packages
"fmt"
"strconv"
"log"
"net"
"net/http"
// Third party packages
"github.com/julienschmidt/httprouter"
"github.com/skratchdot/open-golang/open"
)
// https://blog.golang.org/context/userip/userip.go
func getIP(w http.ResponseWriter, req *http.Request, _ httprouter.Params){
fmt.Fprintf(w, "<h1>static file server</h1><p><a href='./static'>folder</p></a>")
ip, port, err := net.SplitHostPort(req.RemoteAddr)
if err != nil {
//return nil, fmt.Errorf("userip: %q is not IP:port", req.RemoteAddr)
fmt.Fprintf(w, "userip: %q is not IP:port", req.RemoteAddr)
}
userIP := net.ParseIP(ip)
if userIP == nil {
//return nil, fmt.Errorf("userip: %q is not IP:port", req.RemoteAddr)
fmt.Fprintf(w, "userip: %q is not IP:port", req.RemoteAddr)
return
}
// This will only be defined when site is accessed via non-anonymous proxy
// and takes precedence over RemoteAddr
// Header.Get is case-insensitive
forward := req.Header.Get("X-Forwarded-For")
fmt.Fprintf(w, "<p>IP: %s</p>", ip)
fmt.Fprintf(w, "<p>Port: %s</p>", port)
fmt.Fprintf(w, "<p>Forwarded for: %s</p>", forward)
}
func main() {
myport := strconv.Itoa(10002);
// Instantiate a new router
r := httprouter.New()
r.GET("/ip", getIP)
// Add a handler on /test
r.GET("/test", func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
// Simply write some test data for now
fmt.Fprint(w, "Welcome!\n")
})
l, err := net.Listen("tcp", "localhost:" + myport)
if err != nil {
log.Fatal(err)
}
// The browser can connect now because the listening socket is open.
//err = open.Start("http://localhost:"+ myport + "/test")
err = open.Start("http://localhost:"+ myport + "/ip")
if err != nil {
log.Println(err)
}
// Start the blocking server loop.
log.Fatal(http.Serve(l, r))
}
Ternary expressions are very useful in JS, especially React. Here's a simplified answer to the many good, detailed ones provided.
condition ? expressionIfTrue : expressionIfFalse
Think of expressionIfTrue
as the OG if statement rendering true;
think of expressionIfFalse
as the else statement.
Example:
var x = 1;
(x == 1) ? y=x : y=z;
this checked the value of x, the first y=(value) returned if true, the second return after the colon : returned y=(value) if false.
sprintf() is designed to handle far more than just strings, strcat() is specialist. But I suspect that you are sweating the small stuff. C strings are fundamentally inefficient in ways that make the differences between these two proposed methods insignificant. Read "Back to Basics" by Joel Spolsky for the gory details.
This is an instance where C++ generally performs better than C. For heavy weight string handling using std::string is likely to be more efficient and certainly safer.
[edit]
[2nd edit]Corrected code (too many iterations in C string implementation), timings, and conclusion change accordingly
I was surprised at Andrew Bainbridge's comment that std::string was slower, but he did not post complete code for this test case. I modified his (automating the timing) and added a std::string test. The test was on VC++ 2008 (native code) with default "Release" options (i.e. optimised), Athlon dual core, 2.6GHz. Results:
C string handling = 0.023000 seconds
sprintf = 0.313000 seconds
std::string = 0.500000 seconds
So here strcat() is faster by far (your milage may vary depending on compiler and options), despite the inherent inefficiency of the C string convention, and supports my original suggestion that sprintf() carries a lot of baggage not required for this purpose. It remains by far the least readable and safe however, so when performance is not critical, has little merit IMO.
I also tested a std::stringstream implementation, which was far slower again, but for complex string formatting still has merit.
Corrected code follows:
#include <ctime>
#include <cstdio>
#include <cstring>
#include <string>
void a(char *first, char *second, char *both)
{
for (int i = 0; i != 1000000; i++)
{
strcpy(both, first);
strcat(both, " ");
strcat(both, second);
}
}
void b(char *first, char *second, char *both)
{
for (int i = 0; i != 1000000; i++)
sprintf(both, "%s %s", first, second);
}
void c(char *first, char *second, char *both)
{
std::string first_s(first) ;
std::string second_s(second) ;
std::string both_s(second) ;
for (int i = 0; i != 1000000; i++)
both_s = first_s + " " + second_s ;
}
int main(void)
{
char* first= "First";
char* second = "Second";
char* both = (char*) malloc((strlen(first) + strlen(second) + 2) * sizeof(char));
clock_t start ;
start = clock() ;
a(first, second, both);
printf( "C string handling = %f seconds\n", (float)(clock() - start)/CLOCKS_PER_SEC) ;
start = clock() ;
b(first, second, both);
printf( "sprintf = %f seconds\n", (float)(clock() - start)/CLOCKS_PER_SEC) ;
start = clock() ;
c(first, second, both);
printf( "std::string = %f seconds\n", (float)(clock() - start)/CLOCKS_PER_SEC) ;
return 0;
}
You need to find what your local network's IP of that computer is. Then other people can access to your site by that IP.
You can find your local network's IP by go to Command Prompt or press Windows + R then type in ipconfig
. It will give out some information and your local IP should look like 192.168.1.x.
With SemaphoreSlim
you can achieve parallelism control.
var bag = new ConcurrentBag<object>();
var maxParallel = 20;
var throttler = new SemaphoreSlim(initialCount: maxParallel);
var tasks = myCollection.Select(async item =>
{
try
{
await throttler.WaitAsync();
var response = await GetData(item);
bag.Add(response);
}
finally
{
throttler.Release();
}
});
await Task.WhenAll(tasks);
var count = bag.Count;
If you can go the functional way, the following is pretty clear
new_list = [x] + your_list
Of course you haven't inserted x
into your_list
, rather you have created a new list with x
preprended to it.
Go to this link
Download version tar.gz for windows and just extract files to the folder by your needs. On the left pane, you can select which version of openjdk to download
Tutorial: unzip as expected. You need to set system variable PATH to include your directory with openjdk so you can type java -version in console.
You can customize the deserialization for any attribute.
Declare your deserialize class using the annotationJsonDeserialize (import com.fasterxml.jackson.databind.annotation.JsonDeserialize
) for the attribute that will be processed. If this is an Enum:
@JsonDeserialize(using = MyEnumDeserialize.class)
private MyEnum myEnum;
This way your class will be used to deserialize the attribute. This is a full example:
public class MyEnumDeserialize extends JsonDeserializer<MyEnum> {
@Override
public MyEnum deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
JsonNode node = jsonParser.getCodec().readTree(jsonParser);
MyEnum type = null;
try{
if(node.get("attr") != null){
type = MyEnum.get(Long.parseLong(node.get("attr").asText()));
if (type != null) {
return type;
}
}
}catch(Exception e){
type = null;
}
return type;
}
}
If you wish to use the Horizontal Recycler View to act as a ViewPager then it's possible now with the help of LinearSnapHelper
which is added in Support Library version 24.2.0.
Firstly Add RecyclerView to your Activity/Fragment
<android.support.v7.widget.RecyclerView
android:layout_below="@+id/sign_in_button"
android:layout_width="match_parent"
android:orientation="horizontal"
android:id="@+id/blog_list"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
In my case I have used a CardView
inside the RecyclerView
blog_row.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_margin="15dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<com.android.volley.toolbox.NetworkImageView
android:id="@+id/imageBlogPost"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:paddingBottom="15dp"
android:src="@drawable/common_google_signin_btn_text_light_normal" />
<TextView
android:id="@+id/TitleTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:text="Post Title Here"
android:textSize="16sp" />
<TextView
android:id="@+id/descriptionTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Post Description Here"
android:paddingBottom="15dp"
android:textSize="14sp" />
</LinearLayout>
</android.support.v7.widget.CardView>
In your Activity/Fragment
private RecyclerView mBlogList;
LinearLayoutManager layoutManager
= new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
mBlogList = (RecyclerView) findViewById(R.id.blog_list);
mBlogList.setHasFixedSize(true);
mBlogList.setLayoutManager(layoutManager);
LinearSnapHelper snapHelper = new LinearSnapHelper() {
@Override
public int findTargetSnapPosition(RecyclerView.LayoutManager lm, int velocityX, int velocityY) {
View centerView = findSnapView(lm);
if (centerView == null)
return RecyclerView.NO_POSITION;
int position = lm.getPosition(centerView);
int targetPosition = -1;
if (lm.canScrollHorizontally()) {
if (velocityX < 0) {
targetPosition = position - 1;
} else {
targetPosition = position + 1;
}
}
if (lm.canScrollVertically()) {
if (velocityY < 0) {
targetPosition = position - 1;
} else {
targetPosition = position + 1;
}
}
final int firstItem = 0;
final int lastItem = lm.getItemCount() - 1;
targetPosition = Math.min(lastItem, Math.max(targetPosition, firstItem));
return targetPosition;
}
};
snapHelper.attachToRecyclerView(mBlogList);
Last Step is to set adapter to RecyclerView
mBlogList.setAdapter(firebaseRecyclerAdapter);
Another way that doesn't use group by:
SELECT * FROM tblpm n
WHERE date_updated=(SELECT date_updated FROM tblpm n
ORDER BY date_updated desc LIMIT 1)
If you have Cygwin installed (which I strongly recommend for a variety of reasons), you could use the 'file' utility on the DLL
file <filename>
which would give an output like this:
icuuc36.dll: MS-DOS executable PE for MS Windows (DLL) (GUI) Intel 80386 32-bit
When serialising an XML document to a .NET string, the encoding must be set to UTF-16. Strings are stored as UTF-16 internally, so this is the only encoding that makes sense. If you want to store data in a different encoding, you use a byte array instead.
SQL Server works on a similar principle; any string passed into an xml
column must be encoded as UTF-16. SQL Server will reject any string where the XML declaration does not specify UTF-16. If the XML declaration is not present, then the XML standard requires that it default to UTF-8, so SQL Server will reject that as well.
Bearing this in mind, here are some utility methods for doing the conversion.
public static string Serialize<T>(T value) {
if(value == null) {
return null;
}
XmlSerializer serializer = new XmlSerializer(typeof(T));
XmlWriterSettings settings = new XmlWriterSettings()
{
Encoding = new UnicodeEncoding(false, false), // no BOM in a .NET string
Indent = false,
OmitXmlDeclaration = false
};
using(StringWriter textWriter = new StringWriter()) {
using(XmlWriter xmlWriter = XmlWriter.Create(textWriter, settings)) {
serializer.Serialize(xmlWriter, value);
}
return textWriter.ToString();
}
}
public static T Deserialize<T>(string xml) {
if(string.IsNullOrEmpty(xml)) {
return default(T);
}
XmlSerializer serializer = new XmlSerializer(typeof(T));
XmlReaderSettings settings = new XmlReaderSettings();
// No settings need modifying here
using(StringReader textReader = new StringReader(xml)) {
using(XmlReader xmlReader = XmlReader.Create(textReader, settings)) {
return (T) serializer.Deserialize(xmlReader);
}
}
}
I tried this on the command line using
D:\>xcopy myfile.dat xcopytest\test\
and the target directory was properly created.
If not you can create the target dir using the mkdir
command with cmd
's command extensions enabled like
cmd /x /c mkdir "$(SolutionDir)Prism4Demo.Shell\$(OutDir)Modules\"
('/x' enables command extensions in case they're not enabled by default on your system, I'm not that familiar with cmd
)
use
cmd /?
mkdir /?
xcopy /?
for further information :)
You need to install the psycopg2
module.
On CentOS: Make sure Python 2.7+ is installed. If not, follow these instructions: http://toomuchdata.com/2014/02/16/how-to-install-python-on-centos/
# Python 2.7.6:
$ wget http://python.org/ftp/python/2.7.6/Python-2.7.6.tar.xz
$ tar xf Python-2.7.6.tar.xz
$ cd Python-2.7.6
$ ./configure --prefix=/usr/local --enable-unicode=ucs4 --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib"
$ make && make altinstall
$ yum install postgresql-libs
# First get the setup script for Setuptools:
$ wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py
# Then install it for Python 2.7 and/or Python 3.3:
$ python2.7 ez_setup.py
$ easy_install-2.7 psycopg2
Even though this is a CentOS question, here are the instructions for Ubuntu:
$ sudo apt-get install python3-pip python-distribute python-dev
$ easy_install psycopg2
Posting it from my project.
<select name="parent" id="parent"><option value="0">None</option>
<?php
$select="select=selected";
$allparent=mysql_query("select * from tbl_page_content where parent='0'");
while($parent=mysql_fetch_array($allparent))
{?>
<option value="<?= $parent['id']; ?>" <?php if( $pageDetail['parent']==$parent['id'] ) { echo($select); }?>><?= $parent['name']; ?></option>
<?php
}
?></select>
@Matanya - have you looked at your server logs to see WHAT the error 500 actually is? It could be any number of things
@Aladin - white screen of death (WSOD) can be diagnosed in three ways with Laravel 4.
Option 1: Go to your Laravel logs (app/storage/logs) and see if the error is contained in there.
Option 2: Go to you PHP server logs, and look for the PHP error that is causing the WSOD
Option 3: Good old debugging skills - add a die('hello') command at the start of your routes file - then keep moving it deeper and deeper into your application until you no longer see the 'hello' message. Using this you will be able to narrow down the line that is causing your WSOD and fix the problem.
To stage modified and deleted files
git add -u
I was getting this same error while running RUN dotnet restore
in my Dockerfile
using docker-compose up
command in Windows 10
.
I have tried all the possible solution provided on the internet and was also keep an eye on this open issue. Finally, after spending more than 8 hours, by following the preceding steps, I was able to fix my issue.
Docker
from your systemInstall Docker
from this link. Below is the version of my Docker
Restart your system
Start Docker for Windows, search Docker
in the search bar in Windows. Make sure it is running.
You should also go to Services.msc
and make sure the services Docker Engine
and Docker for Windows Service
are running.
At last, you must check your Nuget.config file from C:\Users\{Username}\AppData\Roaming\NuGet
. For me, the content of that file was as below.
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<packageSources>
<add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
</packageSources>
<packageRestore>
<add key="enabled" value="True" />
<add key="automatic" value="True" />
</packageRestore>
<bindingRedirects>
<add key="skip" value="False" />
</bindingRedirects>
<packageManagement>
<add key="format" value="0" />
<add key="disabled" value="False" />
</packageManagement>
</configuration>
Hope this helps.
The question has already been marked as answered, But I guess the question states that the person wants to remove multiple columns from a DataTable
.
So for that, here is what I did, when I came across the same problem.
string[] ColumnsToBeDeleted = { "col1", "col2", "col3", "col4" };
foreach (string ColName in ColumnsToBeDeleted)
{
if (dt.Columns.Contains(ColName))
dt.Columns.Remove(ColName);
}
You should iterate over the keys and get the values using square brackets.
See: How do I enumerate the properties of a javascript object?
EDIT: Obviously, this makes the question a duplicate.
I tried your code, you didn't assign/bind a value to your formControlName.
In HTML file:
<form [formGroup]="form">
<label>
<input type="radio" value="Male" formControlName="gender">
<span>male</span>
</label>
<label>
<input type="radio" value="Female" formControlName="gender">
<span>female</span>
</label>
</form>
In the TS file:
form: FormGroup;
constructor(fb: FormBuilder) {
this.name = 'Angular2'
this.form = fb.group({
gender: ['', Validators.required]
});
}
Make sure you use Reactive form properly: [formGroup]="form"
and you don't need the name attribute.
In my sample. words male
and female
in span tags are the values display along the radio button and Male
and Female
values are bind to formControlName
To make it shorter:
<form [formGroup]="form">
<input type="radio" value='Male' formControlName="gender" >Male
<input type="radio" value='Female' formControlName="gender">Female
</form>
Hope it helps:)