4gb RAM doesn't mean you can use it all for java process. Lots of RAM is needed for system processes. Dont go above 2GB or it will be trouble some.
Before starting jvm just check how much RAM is available and then set memory accordingly.
If you happen to have AWS S3 that works like a charm also. Well. Relatively speaking :-)
Create a bucket for your ad hocs in AWS, add an index file (it can just be a blank index.html file) then using a client that can connect to S3 like CyberDuck or Coda (I used Coda - where you'd select Add Site to get a connection window) then set the connections like the attached:
Then build your enterprise ad hoc in XCode and make sure you use https://s3.amazonaws.com/your-bucket-name/your-ad-hoc-folder/your-app.ipa as the Application URL, and upload it to your new S3 bucket directory.
Your itms link should match, i.e. itms-services://?action=download-manifest&url=https://s3.amazonaws.com/your-bucket-name/your-ad-hoc-folder/your-app.plist
And voilá.
This is only for generic AWS URLs - I haven't tried with custom URLs on AWS so you might have to do a few things differently.
I was determined to try to make James Webster's solution above work, but I couldn't get it to work with Plesk.
The problem is probably that you haven't resumed from the first error. You can't throw an error from within an error handler. You should add in a resume statement, something like the following, so VBA no longer thinks you are inside the error handler:
For Each oSheet In ActiveWorkbook.Sheets
On Error GoTo NextSheet:
Set qry = oSheet.ListObjects(1).QueryTable
oCmbBox.AddItem oSheet.Name
NextSheet:
Resume NextSheet2
NextSheet2:
Next oSheet
For those using jQuery there's a convenient method: http://api.jquery.com/change/
Please see my working sample application on Github and compare with your set up.
Instead of using sed
to filter out the certificate, you can also pipe the openssl s_client
output through openssl x509 -out certfile.txt
, for example:
echo "" | openssl s_client -connect my.server.com:443 -showcerts 2>/dev/null | openssl x509 -out certfile.txt
Also, this could make it works:
@{
Html.RenderPartial("your view", your_model, ViewData);
}
or
@{
Html.RenderPartial("your view", your_model);
}
For more information on RenderPartial and similar HTML helpers in MVC see this popular StackOverflow thread
You forgot to define the default value for left
so it doesn't know how to animate.
.test {
left: 0;
transition:left 1s linear;
}
See here: http://jsfiddle.net/shomz/yFy5n/5/
Just use this code:
SwingUtilities.getRootPane(myButton).setDefaultButton(myButton);
Depends on your editor.
Have you tried Shift+Tab?
Use CHAR(10) if you are storing US Phone numbers only. Remove everything but the digits.
One more possibility, if you don't want to use ArgumentCaptor
(for example, because you're also using stubbing), is to use Hamcrest Matchers in combination with Mockito.
import org.mockito.Mockito
import org.hamcrest.Matchers
...
Mockito.verify(mockedObject).someMethodOnMockedObject(MockitoHamcrest.argThat(
Matchers.<SomeObjectAsArgument>hasProperty("propertyName", desiredValue)));
I'm a bit confused by the quotes, however, below should work for you:
SELECT "Gc_Staff_Number",
"Start_Date", x.end_date
FROM "Employment_History" eh,
(SELECT "End_Date"
FROM "Employment_History"
WHERE "Current_Flag" != 'Y'
AND ROWNUM = 1
AND "Employee_Number" = eh.Employee_Number
ORDER BY "End_Date" ASC) x
WHERE "Current_Flag" = 'Y'
As is defined in RFC 1341:
In the Extended BNF notation of RFC 822, a Content-Type header field value is defined as follows:
Content-Type := type "/" subtype *[";" parameter]
type := "application" / "audio" / "image" / "message" / "multipart" / "text" / "video" / x-token
x-token := < The two characters "X-" followed, with no intervening white space, by any token >
subtype := token
parameter := attribute "=" value
attribute := token
value := token / quoted-string
token := 1*
tspecials := "(" / ")" / "<" / ">" / "@" ; Must be in / "," / ";" / ":" / "\" / <"> ; quoted-string, / "/" / "[" / "]" / "?" / "." ; to use within / "=" ; parameter values
And a list of known MIME types that can follow it (or, as Joe remarks, the IANA source).
As you can see the list is way too big for you to validate against all of them. What you can do is validate against the general format and the type
attribute to make sure that is correct (the set of options is small) and just assume that what follows it is correct (and of course catch any exceptions you might encounter when you put it to actual use).
Also note the comment above:
If another primary type is to be used for any reason, it must be given a name starting with "X-" to indicate its non-standard status and to avoid any potential conflict with a future official name.
You'll notice that a lot of HTTP requests/responses include an X-
header of some sort which are self defined, keep this in mind when validating the types.
Short answer: You can't.
Technically there is an accurate way, which would be checking the property:
history.previous
However, it won't work. The problem with this is that in most browsers this is considered a security violation and usually just returns undefined.
history.length
Is a property that others have suggested...
However, the length doesn't work completely because it doesn't indicate where in the history you are. Additionally, it doesn't always start at the same number. A browser not set to have a landing page, for example, starts at 0 while another browser that uses a landing page will start at 1.
Most of the time a link is added that calls:
history.back();
or
history.go(-1);
and it's just expected that if you can't go back then clicking the link does nothing.
you are looking for this:
a:visited{
color:blue;
}
Links have several states you can alter... the way I remember them is LVHFA (Lord Vader's Handle Formerly Anakin)
Each letter stands for a pseudo class: (Link,Visited,Hover,Focus,Active)
a:link{
color:blue;
}
a:visited{
color:purple;
}
a:hover{
color:orange;
}
a:focus{
color:green;
}
a:active{
color:red;
}
If you want the links to always be blue, just change all of them to blue. I would note though on a usability level, it would be nice if the mouse click caused the color to change a little bit (even if just a lighter/darker blue) to help indicate that the link was actually clicked (this is especially important in a touchscreen interface where you're not always sure the click was actually registered)
If you have different types of links that you want to all have the same color when clicked, add a class to the links.
a.foo, a.foo:link, a.foo:visited, a.foo:hover, a.foo:focus, a.foo:active{
color:green;
}
a.bar, a.bar:link, a.bar:visited, a.bar:hover, a.bar:focus, a.bar:active{
color:orange;
}
It should be noted that not all browsers respect each of these options ;-)
First of all add jquery library file jquery and call it in your html head.
and then Use jquery based code...
$("#id_of_textbox").keyup(function(event){
if(event.keyCode == 13){
$("#id_of_button").click();
}
});
string utf8String = "Acción";
string propEncodeString = string.Empty;
byte[] utf8_Bytes = new byte[utf8String.Length];
for (int i = 0; i < utf8String.Length; ++i)
{
utf8_Bytes[i] = (byte)utf8String[i];
}
propEncodeString = Encoding.UTF8.GetString(utf8_Bytes, 0, utf8_Bytes.Length);
Output should look like
Acción
day’s displays day's
call DecodeFromUtf8();
private static void DecodeFromUtf8()
{
string utf8_String = "day’s";
byte[] bytes = Encoding.Default.GetBytes(utf8_String);
utf8_String = Encoding.UTF8.GetString(bytes);
}
If you know that v1
has a value, you can use the Value
property:
v2 = v1.Value;
Using the GetValueOrDefault
method will assign the value if there is one, otherwise the default for the type, or a default value that you specify:
v2 = v1.GetValueOrDefault(); // assigns zero if v1 has no value
v2 = v1.GetValueOrDefault(-1); // assigns -1 if v1 has no value
You can use the HasValue
property to check if v1
has a value:
if (v1.HasValue) {
v2 = v1.Value;
}
There is also language support for the GetValueOrDefault(T)
method:
v2 = v1 ?? -1;
If removing \0 from the end of string is impossible, you can add your own character for each string you encode, and remove it on decode.
Since you mentioned it's always going to have a length of 4, I won't be doing any error checking to make this slick. ;)
function pad(input) {
var BASE = "0000";
return input ? BASE.substr(0, 4 - Math.ceil(input / 10)) + input : BASE;
}
Idea: Simply replace '0000' with number provided... Issue with that is, if input
is 0, I need to hard-code it to return '0000'. LOL.
This should be slick enough.
JSFiddler: http://jsfiddle.net/Up5Cr/
After some research I have found method that doesn't require maven or any 3rd party extension/program.
You can use "Class-Path" in your manifest file.
For example:
Create manifest file MANIFEST.MF
Manifest-Version: 1.0
Created-By: Bundle
Class-Path: ./custom_lib.jar
Main-Class: YourMainClass
Compile all your classes and run jar cfm Testing.jar MANIFEST.MF *.class custom_lib.jar
c
stands for create archive
f
indicates that you want to specify file
v
is for verbose input
m
means that we will pass custom manifest file
Be sure that you included lib in jar package. You should be able to run jar in the normal way.
based on: http://www.ibm.com/developerworks/library/j-5things6/
all other information you need about the class-path do you find here
To install apk in avd, just manually drag and drop the apk file in the opened emulated device
The same if you want to copy a file to the sd card
I don't know about underline, but for bold and italic there is "bolditalic"
. There is no mention of underline here: http://developer.android.com/reference/android/widget/TextView.html#attr_android:textStyle
Mind you that to use the mentioned bolditalic
you need to, and I quote from that page
Must be one or more (separated by '|') of the following constant values.
so you'd use bold|italic
You could check this question for underline: Can I underline text in an android layout?
public static ArrayList<Integer> duplicate(final int[] zipcodelist) {
HashSet<Integer> hs = new HashSet<>();
ArrayList<Integer> al = new ArrayList<>();
for(int element: zipcodelist) {
if(hs.add(element)==false) {
al.add(element);
}
}
return al;
}
With perl:
fg@erwin ~ $ perl -ne 'push @l, (split(/\s+/))[1]; END { print join(",", @l) . "\n" }' <<EOF
something1: +12.0 (some unnecessary trailing data (this must go))
something2: +15.5 (some more unnecessary trailing data)
something4: +9.0 (some other unnecessary data)
something1: +13.5 (blah blah blah)
EOF
+12.0,+15.5,+9.0,+13.5
I think you can use db.collection.distinct(fields,query)
You will be able to get the distinct values in your case for NetworkID.
It should be something like this :
Db.collection.distinct('NetworkID')
Write a vba proc like:
Sub E_1()
Call sndPlaySound32(ThisWorkbook.Path & "\e1.wav", 0)
Range("AG" & (ActiveCell.Row)).Select 'go to column AG in the same row
End Sub
then go to developer tab, macros, select the macro, click options, then add a shortcut letter or button.
A tad bit late, but I think the OP was looking for something like:
curl -K myfile.txt --trace-asci output.txt
Here's what I used to get information on an undocumented (3rd-party) intent:
Bundle bundle = intent.getExtras();
if (bundle != null) {
for (String key : bundle.keySet()) {
Log.e(TAG, key + " : " + (bundle.get(key) != null ? bundle.get(key) : "NULL"));
}
}
Make sure to check if bundle
is null before the loop.
I've had a lot of success using thoonk.js along with thoonk.py. Thoonk leverages Redis (in-memory key-value store) to give you feed (think publish/subscribe), queue and job patterns for communication.
Why is this better than unix sockets or direct tcp sockets? Overall performance may be decreased a little, however Thoonk provides a really simple API that simplifies having to manually deal with a socket. Thoonk also helps make it really trivial to implement a distributed computing model that allows you to scale your python workers to increase performance, since you just spin up new instances of your python workers and connect them to the same redis server.
const arr = Array.from({ length: 10 }).fill(0)
_x000D_
Following query working for me
when i have set default value of column 'NULL' then
select * from table where column IS NOT NULL
and when i have set default value nothing then
select * from table where column <>''
awk '{print substr($0,6)}' file
It appears that the following works:
convert \
-verbose \
-density 150 \
-trim \
test.pdf \
-quality 100 \
-flatten \
-sharpen 0x1.0 \
24-18.jpg
It results in the left image. Compare this to the result of my original command (the image on the right):
(To really see and appreciate the differences between the two, right-click on each and select "Open Image in New Tab...".)
Also keep the following facts in mind:
So, no need to resize; add the -density
flag. The density value 150 is weird -- trying a range of values results in a worse looking image in both directions!
lodash also has a remove method
var myArr = [
{ name: "john", age: 23 },
{ name: "john", age: 43 },
{ name: "jim", age: 101 },
{ name: "bob", age: 67 }
];
var onlyJohn = myArr.remove( person => { return person.name == "john" })
public class ProductList
{
public string product{get;set;}
public List<ProductList> objList{get;set;}
}
ProductList obj=new ProductList();
obj.objList=new List<ProductList>();
obj.objList.add(new ProductList{product="Football"});
now assign obj to session
Session["Product"]=obj;
for retrieval of session.
ProductList objLst = (ProductList)Session["Product"];
I wanted to get the environment in one of my services. It is really easy to do! I just inject it to the constructor like this:
private readonly IHostingEnvironment _hostingEnvironment;
public MyEmailService(IHostingEnvironment hostingEnvironment)
{
_hostingEnvironment = hostingEnvironment;
}
Now later on in the code I can do this:
if (_hostingEnvironment.IsProduction()) {
// really send the email.
}
else {
// send the email to the test queue.
}
Code above is for .NET Core 2. For version 3 you will want to use IWebHostEnvironment
.
ERROR 1064 (42000) at line 1:
This error is very common. The main reason of the occurrence of this error is: When user accidentally edited or false edit the .sql file.
Os X Mojave 10.14 has:
Error: The Command Line Tools header package must be installed on Mojave.
Solution. Go to
/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg
location and install the package manually. And brew will start working and we can run:
brew uninstall --force git
brew cleanup --force -s git
brew prune
brew install git
You use it like this:
SELECT age, name
FROM users
UNION
SELECT 25 AS age, 'Betty' AS name
Use UNION ALL
to allow duplicates: if there is a 25-years old Betty among your users, the second query will not select her again with mere UNION
.
A simple example:
public class Test extends Thread {
public synchronized void run() {
for (int i = 0; i <= 10; i++) {
System.out.println("i::"+i);
}
}
public static void main(String[] args) {
Test obj = new Test();
Thread t1 = new Thread(obj);
Thread t2 = new Thread(obj);
Thread t3 = new Thread(obj);
t1.start();
t2.start();
t3.start();
}
}
An quick solution would be to create a new local directory for example c:\git_2014, In this directory rightklick and choose Git Clone
The fastest possible way to create random 32-char string in Node is by using native crypto
module:
const crypto = require("crypto");
const id = crypto.randomBytes(16).toString("hex");
console.log(id); // => f9b327e70bbcf42494ccb28b2d98e00e
You can also enable multiple GPU cores, like so:
import os
os.environ["CUDA_DEVICE_ORDER"]="PCI_BUS_ID"
os.environ["CUDA_VISIBLE_DEVICES"]="0,2,3,4"
Try with this:
const { jasper } = this.state; //Gets the object from state
jasper.name = 'A new name'; //do whatever you want with the object
this.setState({jasper}); //Replace the object in state
grep 656cfd09aee399c8ae8c8d3e735fe48d70be6672773616e15579c8de18e2a3b3 /proc/*/mountinfo
then find the pid of 656cfd09aee399c8ae8c8d3e735fe48d70be6672773616e15579c8de18e2a3b3and
and kill it
If %x%==1 (
If %y%==1 (
:: both are equal to 1.
)
)
That's for checking if multiple variables equal value. Here's for either variable.
If %x%==1 (
:: true
)
If %x%==0 (
If %y%==1 (
:: true
)
)
If %x%==0 (
If %y%==0 (
:: False
)
)
I just thought of that off the top if my head. I could compact it more.
I found that the include parameter needs to be the entire file path, not a relative path or partial path for this to work.
Yes, you can do it by specifying the comparison method. The advantage is the sorted object don't have to be IComparable
aListOfObjects.Sort((x, y) =>
{
int result = x.A.CompareTo(y.A);
return result != 0 ? result : x.B.CompareTo(y.B);
});
Perhaps you want Hash#merge ?
1.9.3p194 :015 > h={}
=> {}
1.9.3p194 :016 > h.merge(:key => 'bar')
=> {:key=>"bar"}
1.9.3p194 :017 >
If you want to change the array in place use merge!
1.9.3p194 :016 > h.merge!(:key => 'bar')
=> {:key=>"bar"}
public enum Suit implements java.io.Serializable, Comparable<Suit>{
spades, hearts, diamonds, clubs;
private static final Suit [] lookup = Suit.values();
public Suit fromOrdinal(int ordinal) {
if(ordinal< 1 || ordinal> 3) return null;
return lookup[value-1];
}
}
the test class
public class MainTest {
public static void main(String[] args) {
Suit d3 = Suit.diamonds;
Suit d3Test = Suit.fromOrdinal(2);
if(d3.equals(d3Test)){
System.out.println("Susses");
}else System.out.println("Fails");
}
}
I appreciate that you share with us if you have a more efficient code, My enum is huge and constantly called thousands of times.
"There are no safe means of assigning multiple recipients to a single mailto: link via HTML. There are safe, non-HTML, ways of assigning multiple recipients from a mailto: link."
http://www.sightspecific.com/~mosh/www_faq/multrec.html
For a quick fix to your problem, change your ;
to a comma ,
and eliminate the spaces between email addresses
<a href='mailto:[email protected],[email protected]'>Email Us</a>
To DELETE, without changing the references, you should first delete or otherwise alter (in a manner suitable for your purposes) all relevant rows in other tables.
To TRUNCATE you must remove the references. TRUNCATE is a DDL statement (comparable to CREATE and DROP) not a DML statement (like INSERT and DELETE) and doesn't cause triggers, whether explicit or those associated with references and other constraints, to be fired. Because of this, the database could be put into an inconsistent state if TRUNCATE was allowed on tables with references. This was a rule when TRUNCATE was an extension to the standard used by some systems, and is mandated by the the standard, now that it has been added.
document.querySelectorAll("[data-foo]")
will get you all elements with that attribute.
document.querySelectorAll("[data-foo='1']")
will only get you ones with a value of 1.
This comes in useful when you have global variables. You declare the existence of global variables in a header, so that each source file that includes the header knows about it, but you only need to “define” it once in one of your source files.
To clarify, using extern int x;
tells the compiler that an object of type int
called x
exists somewhere. It's not the compilers job to know where it exists, it just needs to know the type and name so it knows how to use it. Once all of the source files have been compiled, the linker will resolve all of the references of x
to the one definition that it finds in one of the compiled source files. For it to work, the definition of the x
variable needs to have what's called “external linkage”, which basically means that it needs to be declared outside of a function (at what's usually called “the file scope”) and without the static
keyword.
#ifndef HEADER_H
#define HEADER_H
// any source file that includes this will be able to use "global_x"
extern int global_x;
void print_global_x();
#endif
#include "header.h"
// since global_x still needs to be defined somewhere,
// we define it (for example) in this source file
int global_x;
int main()
{
//set global_x here:
global_x = 5;
print_global_x();
}
#include <iostream>
#include "header.h"
void print_global_x()
{
//print global_x here:
std::cout << global_x << std::endl;
}
as @Christoph Winkler mentioned this is a base class for achieving it:
curl_helper.php
// This class has all the necessary code for making API calls thru curl library
class CurlHelper {
// This method will perform an action/method thru HTTP/API calls
// Parameter description:
// Method= POST, PUT, GET etc
// Data= array("param" => "value") ==> index.php?param=value
public static function perform_http_request($method, $url, $data = false)
{
$curl = curl_init();
switch ($method)
{
case "POST":
curl_setopt($curl, CURLOPT_POST, 1);
if ($data)
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
break;
case "PUT":
curl_setopt($curl, CURLOPT_PUT, 1);
break;
default:
if ($data)
$url = sprintf("%s?%s", $url, http_build_query($data));
}
// Optional Authentication:
//curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
//curl_setopt($curl, CURLOPT_USERPWD, "username:password");
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
curl_close($curl);
return $result;
}
}
Then you can always include the file and use it e.g.: any.php
require_once("curl_helper.php");
...
$action = "GET";
$url = "api.server.com/model"
echo "Trying to reach ...";
echo $url;
$parameters = array("param" => "value");
$result = CurlHelper::perform_http_request($action, $url, $parameters);
echo print_r($result)
An alternative one liner:
((((y % 4) + (int((y - (y % 100)) / y) * ((y % 400) / 100))) - 1) < 0)
This was something that I put together for fun (?) that is also 1:1 compatible with C.
(y % 4)
>>>It first checks if the year is a leap year via the typical mod-4 check.
(int((y - (y % 100)) / y)
>>>It then accounts for those years divisible by 100. If the year is evenly divisible by 100, this will result in a value of 1, otherwise it will result in a value of 0.
((y % 400) / 100)))
>>>Next, the year is divided by 400 (and subsequently 100, to return 1, 2, or 3 if it is not.
These two values
(int(y - (y % 100)) / y)
&
((y % 400) / 100)))
are then multiplied together. If the year is not divisible by 100, this will always equal 0, otherwise if it is divisible by 100, but not by 400, it will result in 1, 2, or 3. If it is divisible by both 100 and 400, it will result in 0.
This value is added to (y % 4)
, which will only be equal to 0 if the year is a leap year after accounting for the edge-cases.
Finally, 1 is subtracted from this remaining value, resulting in -1 if the year is a leap year, and either 0, 1, or 2 if it is not. This value is compared against 0 with the less-than operator. If the year is a leap year this will result in True (or 1, if used in C), otherwise it will return False (or 0, if used in C).
Please note: this code is horribly inefficient, incredibly unreadable, and a detriment to any code attempting to follow proper practices. This was an exercise of mine to see if I could do so, and nothing more.
Further, be aware that ZeroDivisionErrors are a consequence of the input year equaling 0, and must be accounted for.
For example, a VERY basic timeit comparison of 1000 executions shows that, when compared against an equivalent codeblock utilizing simple if-statements and the modulus operator, this one-liner is roughly 5 times slower than its if-block equivalent.
That being said, I do find it highly entertaining!
How about something like this :
string url = "http://www.example.com/aaa/bbb.jpg";
Uri uri = new Uri(url);
string path_Query = uri.PathAndQuery;
string extension = Path.GetExtension(path_Query);
path_Query = path_Query.Replace(extension, string.Empty);// This will remove extension
Can with defaulth value (T-SQL)
ALTER TABLE
Regions
ADD
HasPhotoInReadyStorage BIT NULL, --this column is nullable
HasPhotoInWorkStorage BIT NOT NULL, --this column is not nullable
HasPhotoInMaterialStorage BIT NOT NULL DEFAULT(0) --this column default value is false
GO
I faced the same error, but only with files cloned from git that were assigned to a proprietary plugin. I realized that even after cloning the files from git, I needed to create a new project or import a project in eclipse and this resolved the error.
If you have some tiles that exceed the bounds of your diamond, I recommend drawing in depth order:
...1...
..234..
.56789.
..abc..
...d...
ArrayList<File> directories = new ArrayList<File>(
Arrays.asList(
new File("your/path/").listFiles(File::isDirectory)
)
);
Use ampersand to specify the parent selector.
SCSS syntax:
p {
margin: 2em auto;
> a {
color: red;
}
&:before {
content: "";
}
&:after {
content: "* * *";
}
}
json = File.ReadAllText(System.AppDomain.CurrentDomain.BaseDirectory + "App_Data\\" +download_file[0]);
DataTable dt = (DataTable)JsonConvert.DeserializeObject(json, (typeof(DataTable)));
This may be used in many other scenarios, where you need to copy only a portion of your original string to the destination. Using strncpy() you can copy a limited portion of the original string as opposed by strcpy(). I see the code you have put up comes from publib.boulder.ibm.com.
Sometimes all you have to do to make sure the cursor is inside the text box is: click on the text box and when a menu is displayed, click on "Format text box" then click on the "text box" tab and finally modify all four margins (left, right, upper and bottom) by arrowing down until "0" appear on each margin.
Thought I'd consolidate the answers and show some timeit
results.
Python 2 sucks pretty bad at this, but map
is a bit faster than comprehension.
Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import timeit
>>> setup = """import random
random.seed(10)
l = [str(random.randint(0, 99)) for i in range(100)]"""
>>> timeit.timeit('[int(v) for v in l]', setup)
116.25092001434314
>>> timeit.timeit('map(int, l)', setup)
106.66044823117454
Python 3 is over 4x faster by itself, but converting the map
generator object to a list is still faster than comprehension, and creating the list by unpacking the map
generator (thanks Artem!) is slightly faster still.
Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 17:54:52) [MSC v.1900 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> import timeit
>>> setup = """import random
random.seed(10)
l = [str(random.randint(0, 99)) for i in range(100)]"""
>>> timeit.timeit('[int(v) for v in l]', setup)
25.133059591551955
>>> timeit.timeit('list(map(int, l))', setup)
19.705547827217515
>>> timeit.timeit('[*map(int, l)]', setup)
19.45838406513076
Note: In Python 3, 4 elements seems to be the crossover point (3 in Python 2) where comprehension is slightly faster, though unpacking the generator is still faster than either for lists with more than 1 element.
I guess
@foo = ("aAa", "bbb");
@bar = grep(/^aaa/i, @foo);
print join ",",@bar;
would do the trick.
During initial testing for Membership.ValidateUser with a SqlMembershipProvider, I use a hash (SHA1) algorithm combined with a salt, and, if I changed the salt length to a length not divisible by four, I received this error.
I have not tried any of the fixes above, but if the salt is being altered, this may help someone pinpoint that as the source of this particular error.
It's an interesting question, because it shows that there are a lot of different approaches to achieve the same result. Below I show three different implementations.
Default methods in Collection Framework: Java 8 added some methods to the collections classes, that are not directly related to the Stream API. Using these methods, you can significantly simplify the implementation of the non-stream implementation:
Collection<DataSet> convert(List<MultiDataPoint> multiDataPoints) {
Map<String, DataSet> result = new HashMap<>();
multiDataPoints.forEach(pt ->
pt.keyToData.forEach((key, value) ->
result.computeIfAbsent(
key, k -> new DataSet(k, new ArrayList<>()))
.dataPoints.add(new DataPoint(pt.timestamp, value))));
return result.values();
}
Stream API with flatten and intermediate data structure: The following implementation is almost identical to the solution provided by Stuart Marks. In contrast to his solution, the following implementation uses an anonymous inner class as intermediate data structure.
Collection<DataSet> convert(List<MultiDataPoint> multiDataPoints) {
return multiDataPoints.stream()
.flatMap(mdp -> mdp.keyToData.entrySet().stream().map(e ->
new Object() {
String key = e.getKey();
DataPoint dataPoint = new DataPoint(mdp.timestamp, e.getValue());
}))
.collect(
collectingAndThen(
groupingBy(t -> t.key, mapping(t -> t.dataPoint, toList())),
m -> m.entrySet().stream().map(e -> new DataSet(e.getKey(), e.getValue())).collect(toList())));
}
Stream API with map merging: Instead of flattening the original data structures, you can also create a Map for each MultiDataPoint, and then merge all maps into a single map with a reduce operation. The code is a bit simpler than the above solution:
Collection<DataSet> convert(List<MultiDataPoint> multiDataPoints) {
return multiDataPoints.stream()
.map(mdp -> mdp.keyToData.entrySet().stream()
.collect(toMap(e -> e.getKey(), e -> asList(new DataPoint(mdp.timestamp, e.getValue())))))
.reduce(new HashMap<>(), mapMerger())
.entrySet().stream()
.map(e -> new DataSet(e.getKey(), e.getValue()))
.collect(toList());
}
You can find an implementation of the map merger within the Collectors class. Unfortunately, it is a bit tricky to access it from the outside. Following is an alternative implementation of the map merger:
<K, V> BinaryOperator<Map<K, List<V>>> mapMerger() {
return (lhs, rhs) -> {
Map<K, List<V>> result = new HashMap<>();
lhs.forEach((key, value) -> result.computeIfAbsent(key, k -> new ArrayList<>()).addAll(value));
rhs.forEach((key, value) -> result.computeIfAbsent(key, k -> new ArrayList<>()).addAll(value));
return result;
};
}
You can use WScript.ScriptFullName which will return the full path of the executing script.
You can then use string manipulation (jscript example) :
scriptdir = WScript.ScriptFullName.substring(0,WScript.ScriptFullName.lastIndexOf(WScript.ScriptName)-1)
Or get help from FileSystemObject, (vbscript example) :
scriptdir = CreateObject("Scripting.FileSystemObject").GetParentFolderName(WScript.ScriptFullName)
I'm guessing you're trying to avoid writing out all the column names. If you're using SQL Management Studio you can easily right click on the table and Script As Insert.. then you can mess around with that output to create your query.
The SetCursorPosition
method works in multi-threading scenario, where the other two methods don't
This worked really well for me....
// disable scrolling
$('body').bind('mousewheel touchmove', lockScroll);
// enable scrolling
$('body').unbind('mousewheel touchmove', lockScroll);
// lock window scrolling
function lockScroll(e) {
e.preventDefault();
}
just wrap those two lines of code with whatever decides when you are going to lock scrolling.
e.g.
$('button').on('click', function() {
$('body').bind('mousewheel touchmove', lockScroll);
});
I can't comment on the above answer, but be careful with @Pavel Chuchuva's answer. That formula will not return a result if both coordinates are the same. In that case, distance is null, and so that row won't be returned with that formula as is.
I'm not a MySQL expert, but this seems to be working for me:
SELECT id, ( 3959 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians(-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) ) AS distance
FROM markers HAVING distance < 25 OR distance IS NULL ORDER BY distance LIMIT 0 , 20;
This is hard for to do on MAC seeing as it doesn't have access to the windows functions that can help clear the screen. My best fix is to loop and add lines until the terminal is clear and then run the program. However this isn't as efficient or memory friendly if you use this primarily and often.
void clearScreen(){
int clear = 5;
do {
cout << endl;
clear -= 1;
} while (clear !=0);
}
Given a data URL, you can create an image (either on the page or purely in JS) by setting the src
of the image to your data URL. For example:
var img = new Image;
img.src = strDataURI;
The drawImage()
method of HTML5 Canvas Context lets you copy all or a portion of an image (or canvas, or video) onto a canvas.
You might use it like so:
var myCanvas = document.getElementById('my_canvas_id');
var ctx = myCanvas.getContext('2d');
var img = new Image;
img.onload = function(){
ctx.drawImage(img,0,0); // Or at whatever offset you like
};
img.src = strDataURI;
Edit: I previously suggested in this space that it might not be necessary to use the onload
handler when a data URI is involved. Based on experimental tests from this question, it is not safe to do so. The above sequence—create the image, set the onload
to use the new image, and then set the src
—is necessary for some browsers to surely use the results.
some times when you use android:windowSoftInputMode="stateAlwaysHidden"
in manifest activity or xml, that time it will lose keyboard focus. So first check for that property in your xml and manifest,if it is there just remove it. After add these option to manifest file in side activity android:windowSoftInputMode="adjustPan"
and add this property to listview in xml android:descendantFocusability="beforeDescendants"
Addition to third answer: If you're using non-english Windows, you can find "Credentials Manager" through "Control panel" > "User Accounts" > "Credentials Manager" Icon of Credentials Manager
In new git version(like v2.26.2)
-P, --prune-tags Before fetching, remove any local tags that no longer exist on the remote if --prune is enabled. This option should be used more carefully, unlike --prune it will remove any local references (local tags) that have been created. This option is a shorthand for providing the explicit tag refspec along with --prune, see the discussion about that in its documentation.
So you would need run:
git fetch august --prune --prune-tags
You can use method from Django Doc from this page https://docs.djangoproject.com/en/1.8/ref/models/fields/#default
Create default and use it
def contact_default():
return {"email": "[email protected]"}
contact_info = JSONField("ContactInfo", default=contact_default)
The posts here help me a lot on my way to find a solution for the Uncaught TypeError: Cannot read property 'value' of undefined issue.
There are already here many answers which are correct, but what we don't have here is the combination for 2 answers that i think resolve this issue completely.
function myFunction(field, data){
if (typeof document.getElementsByName("+field+")[0] != 'undefined'){
document.getElementsByName("+field+")[0].value=data;
}
}
The difference is that you make a check(if a property is defined or not) and if the check is true then you can try to assign it a value.
Device/Credential Guard is a Hyper-V based Virtual Machine/Virtual Secure Mode that hosts a secure kernel to make Windows 10 much more secure.
...the VSM instance is segregated from the normal operating system functions and is protected by attempts to read information in that mode. The protections are hardware assisted, since the hypervisor is requesting the hardware treat those memory pages differently. This is the same way to two virtual machines on the same host cannot interact with each other; their memory is independent and hardware regulated to ensure each VM can only access it’s own data.
From here, we now have a protected mode where we can run security sensitive operations. At the time of writing, we support three capabilities that can reside here: the Local Security Authority (LSA), and Code Integrity control functions in the form of Kernel Mode Code Integrity (KMCI) and the hypervisor code integrity control itself, which is called Hypervisor Code Integrity (HVCI).
When these capabilities are handled by Trustlets in VSM, the Host OS simply communicates with them through standard channels and capabilities inside of the OS. While this Trustlet-specific communication is allowed, having malicious code or users in the Host OS attempt to read or manipulate the data in VSM will be significantly harder than on a system without this configured, providing the security benefit.
Running LSA in VSM, causes the LSA process itself (LSASS) to remain in the Host OS, and a special, additional instance of LSA (called LSAIso – which stands for LSA Isolated) is created. This is to allow all of the standard calls to LSA to still succeed, offering excellent legacy and backwards compatibility, even for services or capabilities that require direct communication with LSA. In this respect, you can think of the remaining LSA instance in the Host OS as a ‘proxy’ or ‘stub’ instance that simply communicates with the isolated version in prescribed ways.
And Hyper-V and VMware didn't work the same time until 2020, when VMware used Hyper-V Platform to co-exist with Hyper-V starting with Version 15.5.5.
How does VMware Workstation work before version 15.5.5?
VMware Workstation traditionally has used a Virtual Machine Monitor (VMM) which operates in privileged mode requiring direct access to the CPU as well as access to the CPU’s built in virtualization support (Intel’s VT-x and AMD’s AMD-V). When a Windows host enables Virtualization Based Security (“VBS“) features, Windows adds a hypervisor layer based on Hyper-V between the hardware and Windows. Any attempt to run VMware’s traditional VMM fails because being inside Hyper-V the VMM no longer has access to the hardware’s virtualization support.
Introducing User Level Monitor
To fix this Hyper-V/Host VBS compatibility issue, VMware’s platform team re-architected VMware’s Hypervisor to use Microsoft’s WHP APIs. This means changing our VMM to run at user level instead of in privileged mode, as well modifying it to use the WHP APIs to manage the execution of a guest instead of using the underlying hardware directly.
What does this mean to you?
VMware Workstation/Player can now run when Hyper-V is enabled. You no longer have to choose between running VMware Workstation and Windows features like WSL, Device Guard and Credential Guard. When Hyper-V is enabled, ULM mode will automatically be used so you can run VMware Workstation normally. If you don’t use Hyper-V at all, VMware Workstation is smart enough to detect this and the VMM will be used.
System Requirements
To run Workstation/Player using the Windows Hypervisor APIs, the minimum required Windows 10 version is Windows 10 20H1 build 19041.264. VMware Workstation/Player minimum version is 15.5.5.
To avoid the error, update your Windows 10 to Version 2004/Build 19041 (Mai 2020 Update) and use at least VMware 15.5.5.
If you installed the SquashFS image you can run the script firstboot
. That will return OpenWrt to the defaults of when you flashed the router.
With your serial access just run firstboot and then power cycle the device.
>>> foo = 'BS1 1AB'
>>> foo.replace(" ", "").rstrip()[:-3].upper()
'BS1'
use this
when: "{{ 'value' in variable1}}"
instead of
when: "'value' in {{variable1}}"
Also for string comparison you can use
when: "{{ variable1 == 'value' }}"
SELECT * FROM `calendar` WHERE startTime like '2010-04-29%'
You can also use comparison operators on MySQL dates if you want to find something after or before. This is because they are written in such a way (largest value to smallest with leading zeros) that a simple string sort will sort them correctly.
Try this for including submodules in git repository.
git clone -b <branch_name> --recursive <remote> <directory>
or
git clone --recurse-submodules
It appears we have lost Rafael's answer, which stood as the accepted answer for a few years. This was (at least in 2017) the best-performing solution if you don't have a mixed-type array:
Array.prototype.getUnique = function(){
var u = {}, a = [];
for (var i = 0, l = this.length; i < l; ++i) {
if (u.hasOwnProperty(this[i])) {
continue;
}
a.push(this[i]);
u[this[i]] = 1;
}
return a;
}
If you do have a mixed-type array, you can serialize the hash key:
Array.prototype.getUnique = function() {
var hash = {}, result = [], key;
for ( var i = 0, l = this.length; i < l; ++i ) {
key = JSON.stringify(this[i]);
if ( !hash.hasOwnProperty(key) ) {
hash[key] = true;
result.push(this[i]);
}
}
return result;
}
You need to use -I
with each directory. But you can still delimit the directories with whitespace if you use (GNU) make's foreach
:
INC=$(DIR1) $(DIR2) ...
INC_PARAMS=$(foreach d, $(INC), -I$d)
I had similar issue due to a small mistake, when i was trying to convert a List to json. If a List is converted to json it will return JSONArray not JSONObject.
A simple solution is to use Microsoft ASP.NET Web API 2.2 Client
from NuGet.
Then you can simply do this and it'll serialize the object to JSON and set the Content-Type
header to application/json; charset=utf-8
:
var data = new
{
name = "Foo",
category = "article"
};
var client = new HttpClient();
client.BaseAddress = new Uri(baseUri);
client.DefaultRequestHeaders.Add("token", token);
var response = await client.PostAsJsonAsync("", data);
All objects in JavaScript are implemented as hashtables/associative arrays. So, the following are the equivalent:
alert(myObj["SomeProperty"]);
alert(myObj.SomeProperty);
And, as already indicated, you "remove" a property from an object via the delete
keyword, which you can use in two ways:
delete myObj["SomeProperty"];
delete myObj.SomeProperty;
Hope the extra info helps...
In Opera 12 when you bind using the plain JavaScript, 'oTransitionEnd' will work:
document.addEventListener("oTransitionEnd", function(){
alert("Transition Ended");
});
however if you bind through jQuery, you need to use 'otransitionend'
$(document).bind("otransitionend", function(){
alert("Transition Ended");
});
In case you are using Modernizr or bootstrap-transition.js you can simply do a change:
var transEndEventNames = {
'WebkitTransition' : 'webkitTransitionEnd',
'MozTransition' : 'transitionend',
'OTransition' : 'oTransitionEnd otransitionend',
'msTransition' : 'MSTransitionEnd',
'transition' : 'transitionend'
},
transEndEventName = transEndEventNames[ Modernizr.prefixed('transition') ];
You can find some info here as well http://www.ianlunn.co.uk/blog/articles/opera-12-otransitionend-bugs-and-workarounds/
If you want to follow all the "best practices," there's a few things I'd recommend, some of which are touched on in other answers and comments to this question.
First, while it doesn't have too much of an affect on the specific question you asked, you did mention efficiency, and the best way to handle shared data in your application is to factor it out into a service.
I would personally recommend embracing AngularJS's promise system, which will make your asynchronous services more composable compared to raw callbacks. Luckily, Angular's $http
service already uses them under the hood. Here's a service that will return a promise that resolves to the data from the JSON file; calling the service more than once will not cause a second HTTP request.
app.factory('locations', function($http) {
var promise = null;
return function() {
if (promise) {
// If we've already asked for this data once,
// return the promise that already exists.
return promise;
} else {
promise = $http.get('locations/locations.json');
return promise;
}
};
});
As far as getting the data into your directive, it's important to remember that directives are designed to abstract generic DOM manipulation; you should not inject them with application-specific services. In this case, it would be tempting to simply inject the locations
service into the directive, but this couples the directive to that service.
A brief aside on code modularity: a directive’s functions should almost never be responsible for getting or formatting their own data. There’s nothing to stop you from using the $http service from within a directive, but this is almost always the wrong thing to do. Writing a controller to use $http is the right way to do it. A directive already touches a DOM element, which is a very complex object and is difficult to stub out for testing. Adding network I/O to the mix makes your code that much more difficult to understand and that much more difficult to test. In addition, network I/O locks in the way that your directive will get its data – maybe in some other place you’ll want to have this directive receive data from a socket or take in preloaded data. Your directive should either take data in as an attribute through scope.$eval and/or have a controller to handle acquiring and storing the data.
In this specific case, you should place the appropriate data on your controller's scope and share it with the directive via an attribute.
app.controller('SomeController', function($scope, locations) {
locations().success(function(data) {
$scope.locations = data;
});
});
<ul class="list">
<li ng-repeat="location in locations">
<a href="#">{{location.id}}. {{location.name}}</a>
</li>
</ul>
<map locations='locations'></map>
app.directive('map', function() {
return {
restrict: 'E',
replace: true,
template: '<div></div>',
scope: {
// creates a scope variable in your directive
// called `locations` bound to whatever was passed
// in via the `locations` attribute in the DOM
locations: '=locations'
},
link: function(scope, element, attrs) {
scope.$watch('locations', function(locations) {
angular.forEach(locations, function(location, key) {
// do something
});
});
}
};
});
In this way, the map
directive can be used with any set of location data--the directive is not hard-coded to use a specific set of data, and simply linking the directive by including it in the DOM will not fire off random HTTP requests.
runOnUiThread( new Runnable(){
@Override
public void run(){
mainScrollView.fullScroll(ScrollView.FOCUS_UP);
}
}
Try this,
$('td').click(function(){
var row_index = $(this).parent().index();
var col_index = $(this).index();
});
If you need the index of table contain td then you can change it to
var row_index = $(this).parent('table').index();
Is this what you are looking for? Here is a fiddle demo.
The layout is based on percentage, colors are for clarity. If the content column overflows, a scrollbar should appear.
body, html, .container-fluid {
height: 100%;
}
.navbar {
width:100%;
background:yellow;
}
.article-tree {
height:100%;
width: 25%;
float:left;
background: pink;
}
.content-area {
overflow: auto;
height: 100%;
background:orange;
}
.footer {
background: red;
width:100%;
height: 20px;
}
Try this one
.responsive-container{
display:table;
}
.img-container{
display:table-cell;
vertical-align: middle;
}
In ActiveForm
just use:
<?=
$form->field($model, 'state_id')
->dropDownList(['prompt' => '---- Select State ----'])
->label('State')
?>
A good thing to remember are these simple rules, and they apply to both parameters and return types...
There is a time and place for each, so make sure you get to know them. Local variables, as you've shown here, are just that, limited to the time they are locally alive in the function scope. In your example having a return type of int*
and returning &i
would have been equally incorrect. You would be better off in that case doing this...
void func1(int& oValue)
{
oValue = 1;
}
Doing so would directly change the value of your passed in parameter. Whereas this code...
void func1(int oValue)
{
oValue = 1;
}
would not. It would just change the value of oValue
local to the function call. The reason for this is because you'd actually be changing just a "local" copy of oValue
, and not oValue
itself.
In terms of functionality these are all the same, the difference between them is in code readability and style (which is important to consider)
It forces the browser to use hardware acceleration to access the device’s graphical processing unit (GPU) to make pixels fly. Web applications, on the other hand, run in the context of the browser, which lets the software do most (if not all) of the rendering, resulting in less horsepower for transitions. But the Web has been catching up, and most browser vendors now provide graphical hardware acceleration by means of particular CSS rules.
Using -webkit-transform: translate3d(0,0,0);
will kick the GPU into action for the CSS transitions, making them smoother (higher FPS).
Note: translate3d(0,0,0)
does nothing in terms of what you see. It moves the object by 0px in x,y and z axis. It's only a technique to force the hardware acceleration.
Good read here: http://www.smashingmagazine.com/2012/06/21/play-with-hardware-accelerated-css/
str
is meant to produce a string representation of the object's data. If you're writing your own class and you want str
to work for you, add:
def __str__(self):
return "Some descriptive string"
print str(myObj)
will call myObj.__str__()
.
repr
is a similar method, which generally produces information on the class info. For most core library object, repr
produces the class name (and sometime some class information) between angle brackets. repr
will be used, for example, by just typing your object into your interactions pane, without using print
or anything else.
You can define the behavior of repr
for your own objects just like you can define the behavior of str
:
def __repr__(self):
return "Some descriptive string"
>>> myObj
in your interactions pane, or repr(myObj)
, will result in myObj.__repr__()
You can solve this problem using this code:
if(!empty($_GET['variable from which you get']))
{
$_SESSION['something']= $_GET['variable from which you get'];
}
So you get the variable from a GET form, you will store in the $_SESSION['whatever']
variable just once when $_GET['variable from which you get']
is set and if it is empty $_SESSION['something']
will store the old parameter
In a webpage where I wanted a in image to scale with browser size change and remain at the top, next to a fixed div, all I had to do was use a single CSS line: overflow:hidden;
and it did the trick. The image scales perfectly.
What is especially nice is that this is pure css and will work even if Javascript is turned off.
CSS:
#ImageContainerDiv {
overflow: hidden;
}
HTML:
<div id="ImageContainerDiv">
<a href="URL goes here" target="_blank">
<img src="MapName.png" alt="Click to load map" />
</a>
</div>
Take a pointer to the first element instead:
process_data (&something [0]);
var mystring = "this,is,a,test"
mystring.replace(/,/g, "newchar");
Use the global(g
) flag
The easiest way is to create your GridView with some data source in ASP and call that data source in Row_Deletinng Event. For example if you have SqlDataSource1 as your GridView data source, your Row_Deleting event would be:
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int ID = int.Parse(GridView1.Rows[e.RowIndex].FindControl("ID").toString());
string delete_command = "DELETE FROM your_table WHERE ID = " + ID;
SqlDataSource1.DeleteCommand = delete_command;
}
Running Visual Studio as administrator could fix the issue, but if you use Visual Studio with for example TortoiseSVN, you cannot commit any changes. Another possible solution would be to run the service as administrator and the rest Visual Studio as local user.
Just to complement the other fine answers provided, as I too recently wanted a single error/exception handling component in a simple SpringBoot app containing filters that may throw exceptions, with other exceptions potentially thrown from controller methods.
Fortunately, it seems there is nothing to prevent you from combining your controller advice with an override of Spring's default error handler to provide consistent response payloads, allow you to share logic, inspect exceptions from filters, trap specific service-thrown exceptions, etc.
E.g.
@ControllerAdvice
@RestController
public class GlobalErrorHandler implements ErrorController {
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ExceptionHandler(ValidationException.class)
public Error handleValidationException(
final ValidationException validationException) {
return new Error("400", "Incorrect params"); // whatever
}
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
@ExceptionHandler(Exception.class)
public Error handleUnknownException(final Exception exception) {
return new Error("500", "Unexpected error processing request");
}
@RequestMapping("/error")
public ResponseEntity handleError(final HttpServletRequest request,
final HttpServletResponse response) {
Object exception = request.getAttribute("javax.servlet.error.exception");
// TODO: Logic to inspect exception thrown from Filters...
return ResponseEntity.badRequest().body(new Error(/* whatever */));
}
@Override
public String getErrorPath() {
return "/error";
}
}
Some Regular expression examples:
Positive Integers:
^\d+$
Negative Integers:
^-\d+$
Integer:
^-?\d+$
Positive Number:
^\d*\.?\d+$
Negative Number:
^-\d*\.?\d+$
Positive Number or Negative Number:
^-?\d*\.{0,1}\d+$
Phone number:
^\+?[\d\s]{3,}$
Phone with code:
^\+?[\d\s]+\(?[\d\s]{10,}$
Year 1900-2099:
^(19|20)[\d]{2,2}$
Date (dd mm yyyy, d/m/yyyy, etc.):
^([1-9]|0[1-9]|[12][0-9]|3[01])\D([1-9]|0[1-9]|1[012])\D(19[0-9][0-9]|20[0-9][0-9])$
IP v4:
^(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]){3}$
As of this writing, they are three libraries that emerge:
I don't include Apache Any23 because it uses ICU4j 3.4 under the hood.
It's impossible to certify the charset detected by each above libraries. However, it's possible to ask them in turn and score the returned response.
Each response can be assigned one point. The more points a response have, the more confidence the detected charset has. This is a simple scoring method. You can elaborate others.
Here is a full snippet implementing the strategy described in the previous lines.
public static String guessEncoding(InputStream input) throws IOException {
// Load input data
long count = 0;
int n = 0, EOF = -1;
byte[] buffer = new byte[4096];
ByteArrayOutputStream output = new ByteArrayOutputStream();
while ((EOF != (n = input.read(buffer))) && (count <= Integer.MAX_VALUE)) {
output.write(buffer, 0, n);
count += n;
}
if (count > Integer.MAX_VALUE) {
throw new RuntimeException("Inputstream too large.");
}
byte[] data = output.toByteArray();
// Detect encoding
Map<String, int[]> encodingsScores = new HashMap<>();
// * GuessEncoding
updateEncodingsScores(encodingsScores, new CharsetToolkit(data).guessEncoding().displayName());
// * ICU4j
CharsetDetector charsetDetector = new CharsetDetector();
charsetDetector.setText(data);
charsetDetector.enableInputFilter(true);
CharsetMatch cm = charsetDetector.detect();
if (cm != null) {
updateEncodingsScores(encodingsScores, cm.getName());
}
// * juniversalchardset
UniversalDetector universalDetector = new UniversalDetector(null);
universalDetector.handleData(data, 0, data.length);
universalDetector.dataEnd();
String encodingName = universalDetector.getDetectedCharset();
if (encodingName != null) {
updateEncodingsScores(encodingsScores, encodingName);
}
// Find winning encoding
Map.Entry<String, int[]> maxEntry = null;
for (Map.Entry<String, int[]> e : encodingsScores.entrySet()) {
if (maxEntry == null || (e.getValue()[0] > maxEntry.getValue()[0])) {
maxEntry = e;
}
}
String winningEncoding = maxEntry.getKey();
//dumpEncodingsScores(encodingsScores);
return winningEncoding;
}
private static void updateEncodingsScores(Map<String, int[]> encodingsScores, String encoding) {
String encodingName = encoding.toLowerCase();
int[] encodingScore = encodingsScores.get(encodingName);
if (encodingScore == null) {
encodingsScores.put(encodingName, new int[] { 1 });
} else {
encodingScore[0]++;
}
}
private static void dumpEncodingsScores(Map<String, int[]> encodingsScores) {
System.out.println(toString(encodingsScores));
}
private static String toString(Map<String, int[]> encodingsScores) {
String GLUE = ", ";
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, int[]> e : encodingsScores.entrySet()) {
sb.append(e.getKey() + ":" + e.getValue()[0] + GLUE);
}
int len = sb.length();
sb.delete(len - GLUE.length(), len);
return "{ " + sb.toString() + " }";
}
Improvements:
The guessEncoding
method reads the inputstream entirely. For large inputstreams this can be a concern. All these libraries would read the whole inputstream. This would imply a large time consumption for detecting the charset.
It's possible to limit the initial data loading to a few bytes and perform the charset detection on those few bytes only.
You can use the pgrep command like in the following example
$ pgrep Keychain\ Access
44186
If you have multiple lists, you can do this combining enumerate
and zip
:
list1 = [1, 2, 3, 4, 5]
list2 = [10, 20, 30, 40, 50]
list3 = [100, 200, 300, 400, 500]
for i, (l1, l2, l3) in enumerate(zip(list1, list2, list3)):
print(i, l1, l2, l3)
Output:
0 1 10 100
1 2 20 200
2 3 30 300
3 4 40 400
4 5 50 500
Note that parenthesis is required after i
. Otherwise you get the error: ValueError: need more than 2 values to unpack
Updated code for swift4.0 , iOS11
import UserNotifications
UNUserNotificationCenter.current().getNotificationSettings { (settings) in
print("Notification settings: \(settings)")
guard settings.authorizationStatus == .authorized else { return }
//Not authorised
UIApplication.shared.registerForRemoteNotifications()
}
Code for swift3.0 , iOS10
let isRegisteredForRemoteNotifications = UIApplication.shared.isRegisteredForRemoteNotifications
if isRegisteredForRemoteNotifications {
// User is registered for notification
} else {
// Show alert user is not registered for notification
}
From iOS9 , swift 2.0 UIRemoteNotificationType is deprecated, use following code
let notificationType = UIApplication.shared.currentUserNotificationSettings!.types
if notificationType == UIUserNotificationType.none {
// Push notifications are disabled in setting by user.
}else{
// Push notifications are enabled in setting by user.
}
simply check whether Push notifications are enabled
if notificationType == UIUserNotificationType.badge {
// the application may badge its icon upon a notification being received
}
if notificationType == UIUserNotificationType.sound {
// the application may play a sound upon a notification being received
}
if notificationType == UIUserNotificationType.alert {
// the application may display an alert upon a notification being received
}
There is an alternative command where you can get the raw value of a cell where formula is put on. It's returns type is String. Use:
cell.getRawValue();
This is my plugin for that case:
(function( $ ) {
$.fn.numbers = function(options) {
$(this).keypress(function(evt){
var setting = $.extend( {
'digits' : 8
}, options);
if($(this).val().length > (setting.digits - 1) && evt.which != 8){
evt.preventDefault();
}
else{
if(evt.which < 48 || evt.which > 57){
if(evt.keyCode != 8){
evt.preventDefault();
}
}
}
});
};
})( jQuery );
Use:
$('#limin').numbers({digits:3});
$('#limax').numbers();
jQuery(':button').click(function () {
if (this.id == 'button1') {
alert('Button 1 was clicked');
}
else if (this.id == 'button2') {
alert('Button 2 was clicked');
}
});
EDIT:- This will work for all buttons.
I am in the same boat as you do. I need to study for tech interviews, but memorizing a list is not really helpful. If you have 3-4 hours to spare, and want to do a deeper dive, I recommend checking out
mycodeschool
I’ve looked on Coursera and other resources such as blogs and textbooks,
but I find them either not comprehensive enough or at the other end of the spectrum, too dense with prerequisite computer science terminologies.
The dude in the video have a bunch of lectures on data structures. Don’t mind the silly drawings, or the slight accent at all. You need to understand not just which data structure to select, but some other points to consider when people think about data structures:
First check to see if it can be cast.
if (readData is T) {
return (T)readData;
}
try {
return (T)Convert.ChangeType(readData, typeof(T));
}
catch (InvalidCastException) {
return default(T);
}
I think what you may be thinking of is expressions
or "dynamic properties", which are only supported by IE and let you set a property to the result of a javascript expression. Example:
width:expression(document.body.clientWidth > 800? "800px": "auto" );
This code makes IE emulate the max-width
property it doesn't support.
All things considered, however, avoid using these. They are a bad, bad thing.
You can either make a subclass of the component
http://www.jguru.com/faq/view.jsp?EID=9691
Or fiddle with wrappers
http://www.java-tips.org/java-se-tips/javax.swing/wrap-a-swing-jcomponent-in-a-background-image.html
Yes you can negate the test as SiegeX has already pointed out.
However you shouldn't use regular expressions for this - it can fail if your path contains special characters. Try this instead:
[[ ":$PATH:" != *":$1:"* ]]
If RoleAssignments is a List<T>
you can use the following code.
workSpace.RoleAssignments.RemoveAll(x =>x.Member.Name == shortName);
To use Cygwin in a commercial / proprietary / non-open-source application, you'll need to fork out tens of thousands of dollars for a "license buyout" from Red Hat; this invalidates the standard licensing terms at a considerable cost. Google "cygwin license cost" and see first few results.
For mingw, no such cost is incurred, and the licenses (PD, BSD, MIT) are extremely permissive. At most you may be expected to supply license details with your application, such as the winpthreads license required when using mingw64-tdm.
EDIT thanks to Izzy Helianthus: The commercial license is no longer available or necessary because the API library found in the winsup subdirectory of Cygwin is now being distributed under the LGPL, as opposed to the full GPL.
This is a FAQ:
//somexpression[$N]
means "Find every node selected by //somexpression
that is the $N
th child of its parent".
What you want is:
(//input[@id="search_query"])[2]
Remember: The []
operator has higher precedence (priority) than the //
abbreviation.
If the previously mentioned higher z-indexing in parent nodes wont suit your needs, you can create alternative solution and target it to problematic browsers either by IE conditional comments or using the (more idealistic) feature detection provided by Modernizr.
Quick (and obviously working) test for Modernizr:
Modernizr.addTest('compliantzindex', function(){
var test = document.createElement('div'),
fake = false,
root = document.body || (function () {
fake = true;
return document.documentElement.appendChild(document.createElement('body'));
}());
root.appendChild(test);
test.style.position = 'relative';
var ret = (test.style.zIndex !== 0);
root.removeChild(test);
if (fake) {
document.documentElement.removeChild(root);
}
return ret;
});
One more consideration. I recently implemented a scheme in which some sensitive data posted to a PHP script needed to convert and return it as an encrypted cookie, that used all base64 values I thought were guaranteed 'safe". So I dutifully encrypted the data items using RC4, ran the output through base64_encode, and happily returned the cookie to the site. Testing seemed to go well until a base64 encoded string contained a "+" symbol. The string was written to the page cookie with no trouble. Using the browser diagnostics I could also verify the cookies was written unchanged. Then when a subsequent page called my PHP and obtained the cookie via the $_COOKIE array, I was stammered to find the string was now missing the "+" sign. Every occurrence of that character was replaced with an ASCII space.
Considering how many similar unresolved complaints I've read describing this scenario since then, often siting numerous references to using base64 to "safely" store arbitrary data in cookies, I thought I'd point out the problem and offer my admittedly kludgy solution.
After you've done whatever encryption you want to do on a piece of data, and then used base64_encode to make it "cookie-safe", run the output string through this...
// from browser to PHP. substitute troublesome chars with
// other cookie safe chars, or vis-versa.
function fix64($inp) {
$out =$inp;
for($i = 0; $i < strlen($inp); $i++) {
$c = $inp[$i];
switch ($c) {
case '+': $c = '*'; break; // definitly won't transfer!
case '*': $c = '+'; break;
case '=': $c = ':'; break; // = symbol seems like a bad idea
case ':': $c = '='; break;
default: continue;
}
$out[$i] = $c;
}
return $out;
}
Here I'm simply substituting "+" (and I decided "=" as well) with other "cookie safe" characters, before returning the encoded value to the page, for use as a cookie. Note that the length of the string being processed doesn't change. When the same (or another page on the site) runs my PHP script again, I'll be able to recover this cookie without missing characters. I just have to remember to pass the cookie back through the same fix64() call I created, and from there I can decode it with the usual base64_decode(), followed by whatever other decryption in your scheme.
There may be some setting I could make in PHP that allows base64 strings used in cookies to be transferred back to to PHP without corruption. In the mean time this works. The "+" may be a "legal" cookie value, but if you have any desire to be able to transmit such a string back to PHP (in my case via the $_COOKIE array), I'm suggesting re-processing to remove offending characters, and restore them after recovery. There are plenty of other "cookie safe" characters to choose from.
I recently came across this problem myself.
<!--Instead of using input-->
<input type="submit"/>
<!--Use button-->
<button type="submit">
<!--You can then attach your custom CSS to the button-->
Hope that helps.
You can use pandas.Series.tolist
e.g.:
import pandas as pd
df = pd.DataFrame({'a':[1,2,3], 'b':[4,5,6]})
Run:
>>> df['a'].tolist()
You will get
>>> [1, 2, 3]
Shell
.mysql --user=your_user_name --password=your_password
.var ie = 0;
try { ie = navigator.userAgent.match( /(MSIE |Trident.*rv[ :])([0-9]+)/ )[ 2 ]; }
catch(e){}
How it works: The user-agent string for all IE versions includes a portion "MSIE space version" or "Trident other-text rv space-or-colon version". Knowing this, we grab the version number from a String.match()
regular expression. A try-catch
block is used to shorten the code, otherwise we'd need to test the array bounds for non-IE browsers.
Note: The user-agent can be spoofed or omitted, sometimes unintentionally if the user has set their browser to a "compatibility mode". Though this doesn't seem like much of an issue in practice.
var d = document, w = window;
var ie = ( !!w.MSInputMethodContext ? 11 : !d.all ? 99 : w.atob ? 10 :
d.addEventListener ? 9 : d.querySelector ? 8 : w.XMLHttpRequest ? 7 :
d.compatMode ? 6 : w.attachEvent ? 5 : 1 );
How it works: Each version of IE adds support for additional features not found in previous versions. So we can test for the features in a top-down manner. A ternary sequence is used here for brevity, though if-then
and switch
statements would work just as well. The variable ie
is set to an integer 5-11, or 1 for older, or 99 for newer/non-IE. You can set it to 0 if you just want to test for IE 1-11 exactly.
Note: Object detection may break if your code is run on a page with third-party scripts that add polyfills for things like document.addEventListener
. In such situations the user-agent is the best option.
If you're only interested in whether or not a browser supports most HTML 5 and CSS 3 standards, you can reasonably assume that IE 8 and lower remain the primary problem apps. Testing for window.getComputedStyle
will give you a fairly good mix of modern browsers, as well (IE 9, FF 4, Chrome 11, Safari 5, Opera 11.5). IE 9 greatly improves on standards support, but native CSS animation requires IE 10.
var isModernBrowser = ( !document.all || ( document.all && document.addEventListener ) );
You can't directly control this, because it's an option controlled by Internet Explorer users.
Opening pages using Window.open with a different window name will open in a new browser window like a popup, OR open in a new tab, if the user configured the browser to do so.
You can use the following code to update class attributes using a dictionary object:
class ExampleClass():
def __init__(self, argv):
for key, val in argv.items():
self.__dict__[key] = val
if __name__ == '__main__':
argv = {'intro': 'Hello World!'}
instance = ExampleClass(argv)
print instance.intro
listview.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?>adapter,View v, int position){
Intent intent;
switch(position){
case 0:
intent = new Intent(Activity.this,firstActivity.class);
break;
case 1:
intent = new Intent(Activity.this,secondActivity.class);
break;
case 2:
intent = new Intent(Activity.this,thirdActivity.class);
break;
//add more if you have more items in listview
//0 is the first item 1 second and so on...
}
startActivity(intent);
}
});
for what it's worth I'm using node.js 0.6.7 on OSX and I couldn't get 'Authorization':auth to work with our proxy, it needed to be set to 'Proxy-Authorization':auth my test code is:
var http = require("http");
var auth = 'Basic ' + new Buffer("username:password").toString('base64');
var options = {
host: 'proxyserver',
port: 80,
method:"GET",
path: 'http://www.google.com',
headers:{
"Proxy-Authorization": auth,
Host: "www.google.com"
}
};
http.get(options, function(res) {
console.log(res);
res.pipe(process.stdout);
});
Try this trick .. use css shadow with (inset) option and make the deep 200px for example
Code:
box-shadow: inset 0px 0px 277px 3px #4c3f37;
.
Also for all browsers:
-moz-box-shadow: inset 0px 0px 47px 3px #4c3f37;
-webkit-box-shadow: inset 0px 0px 47px 3px #4c3f37;
box-shadow: inset 0px 0px 277px 3px #4c3f37;
and increase number to make fill your box :)
Enjoy!
To prevent scrolling on modern mobile browsers you need to add the passive: false. I had been pulling my hair out getting this to work until I found this solution. I have only found this mentioned in one other place on the internet.
function preventDefault(e){_x000D_
e.preventDefault();_x000D_
}_x000D_
_x000D_
function disableScroll(){_x000D_
document.body.addEventListener('touchmove', preventDefault, { passive: false });_x000D_
}_x000D_
function enableScroll(){_x000D_
document.body.removeEventListener('touchmove', preventDefault);_x000D_
}
_x000D_
The Django documentation for database queries includes a section on copying model instances. Assuming your primary keys are autogenerated, you get the object you want to copy, set the primary key to None
, and save the object again:
blog = Blog(name='My blog', tagline='Blogging is easy')
blog.save() # blog.pk == 1
blog.pk = None
blog.save() # blog.pk == 2
In this snippet, the first save()
creates the original object, and the second save()
creates the copy.
If you keep reading the documentation, there are also examples on how to handle two more complex cases: (1) copying an object which is an instance of a model subclass, and (2) also copying related objects, including objects in many-to-many relations.
Note on miah's answer: Setting the pk to None
is mentioned in miah's answer, although it's not presented front and center. So my answer mainly serves to emphasize that method as the Django-recommended way to do it.
Historical note: This wasn't explained in the Django docs until version 1.4. It has been possible since before 1.4, though.
Possible future functionality: The aforementioned docs change was made in this ticket. On the ticket's comment thread, there was also some discussion on adding a built-in copy
function for model classes, but as far as I know they decided not to tackle that problem yet. So this "manual" way of copying will probably have to do for now.
In the context of Ektron, this issue is resolved by installing the "IIS6 Metabase compatibility" feature in Windows:
Check 'Windows features' or 'Role Services' for IIS6 Metabase compatibility, add if missing:
On Windows, you could use this command.
taskkill /F /IM <processname>.exe
To kill it forcefully, you may use;
Runtime.getRuntime().exec("taskkill /F /IM <processname>.exe")
An extension of some other answers that covers hexadecimal representation:
public int CharToInt(char c)
{
if (c >= '0' && c <= '9')
{
return c - '0';
}
else if (c >= 'a' && c <= 'f')
{
return 10 + c - 'a';
}
else if (c >= 'A' && c <= 'F')
{
return 10 + c - 'A';
}
return -1;
}
Interesting it works for you. When I tried your solution an error came up, saying that "Type mismatch: cannot convert from SQLQuery to Query". --> Therefore my solution looks like:
SQLQuery query = session.createSQLQuery("select nextval('SEQUENCE_NAME')");
Long nextValue = ((BigInteger)query.uniqueResult()).longValue();
With that solution I didn't run into performance problems.
And don't forget to reset your value, if you just wanted to know for information purposes.
--nextValue;
query = session.createSQLQuery("select setval('SEQUENCE_NAME'," + nextValue + ")");
This is my current method of checking if Mod_rewrite enabled for both Apache and IIS
/**
* --------------------------------------------------------------
* MOD REWRITE CHECK
* --------------------------------------------------------------
* - By A H Abid
* Define Constant for MOD REWRITE
*
* Check if server allows MOD REWRITE. Checks for both
* Apache and IIS.
*
*/
if( function_exists('apache_get_modules') && in_array('mod_rewrite',apache_get_modules()) )
$mod_rewrite = TRUE;
elseif( isset($_SERVER['IIS_UrlRewriteModule']) )
$mod_rewrite = TRUE;
else
$mod_rewrite = FALSE;
define('MOD_REWRITE', $mod_rewrite);
It works in my local machine and also worked in my IIS based webhost. However, on a particular apache server, it didn't worked for Apache as the apache_get_modules() was disabled but the mod_rewrite was enable in that server.
you should use rownum in oracle to do what you seek
where rownum <= 100
see also those answers to help you
You need to declare @font-face
like this in your stylesheet
@font-face {
font-family: 'Awesome-Font';
font-style: normal;
font-weight: 400;
src: local('Awesome-Font'), local('Awesome-Font-Regular'), url(path/Awesome-Font.woff) format('woff');
}
Now if you want to apply this font to a paragraph simply use it like this..
p {
font-family: 'Awesome-Font', Arial;
}
I know this has been answered, but I had the same question and this is what I needed to do to resolve it. During installation, I had not added a network mirror, so I had to add information about where a repo was on the internet. To do this, I ran:
sudo vi /etc/apt/sources.list
and added the following lines:
deb http://ftp.debian.org/debian wheezy main
deb-src http://ftp.debian.org/debian wheezy main
If you need to do this, you may need to replace "wheezy" with the version of debian you're running. Afterwards, run:
sudo apt-get update
sudo apt-get install build-essential
Hopefully this will help someone who had the same problem that I did.
set_value
has been deprecated. You can now use DataFrame.at
to set by label, and DataFrame.iat
to set by integer position.
at
/iat
# Setup
df = pd.DataFrame({'A': [12, 23], 'B': [['a', 'b'], ['c', 'd']]})
df
A B
0 12 [a, b]
1 23 [c, d]
df.dtypes
A int64
B object
dtype: object
If you want to set a value in second row of the "B" to some new list, use DataFrane.at
:
df.at[1, 'B'] = ['m', 'n']
df
A B
0 12 [a, b]
1 23 [m, n]
You can also set by integer position using DataFrame.iat
df.iat[1, df.columns.get_loc('B')] = ['m', 'n']
df
A B
0 12 [a, b]
1 23 [m, n]
ValueError: setting an array element with a sequence
?I'll try to reproduce this with:
df
A B
0 12 NaN
1 23 NaN
df.dtypes
A int64
B float64
dtype: object
df.at[1, 'B'] = ['m', 'n']
# ValueError: setting an array element with a sequence.
This is because of a your object is of float64
dtype, whereas lists are object
s, so there's a mismatch there. What you would have to do in this situation is to convert the column to object first.
df['B'] = df['B'].astype(object)
df.dtypes
A int64
B object
dtype: object
Then, it works:
df.at[1, 'B'] = ['m', 'n']
df
A B
0 12 NaN
1 23 [m, n]
Even more wacky, I've found you can hack through DataFrame.loc
to achieve something similar if you pass nested lists.
df.loc[1, 'B'] = [['m'], ['n'], ['o'], ['p']]
df
A B
0 12 [a, b]
1 23 [m, n, o, p]
You can read more about why this works here.
My guess is, somehow the document is not fully loaded by the time the method is called. Have your code executing after the document is ready event.
For anyone struggling with this issue who tried DeanM's solution but to no avail, there's something else worth checking, which is the version of the JDK you have configured for your project. What I'm trying to say is that if you have configured JDK 8u191 (for example) for your project, but have the language level set to anything higher than 8, you're gonna get this error.
In this case, it's probably better to ask whoever's in charge of the project, which version of the JDK would be preferable to compile the sources.
JPA will use all properties of the class, unless you specifically mark them with @Transient
:
@Transient
private String agencyName;
The @Column
annotation is purely optional, and is there to let you override the auto-generated column name. Furthermore, the length
attribute of @Column
is only used when auto-generating table definitions, it has no effect on the runtime.
This is because of running jre rather than jdk, to install jdk follow below steps
Installing java 8 in amazon linux/redhat
--> yum search java | grep openjdk
--> yum install java-1.8.0-openjdk-headless.x86_64
--> yum install java-1.8.0-openjdk-devel.x86_64
--> update-alternatives --config java
#pick java 1.8 and press 1
--> update-alternatives --config javac
#pick java 1.8 and press 2
Thank You
Normally when an optimization algorithm does not converge, it is usually because the problem is not well-conditioned, perhaps due to a poor scaling of the decision variables. There are a few things you can try.
C
, is set appropriately.max_iter
to a larger value. The default is 1000.dual = True
if number of features > number of examples and vice versa. This solves the SVM optimization problem using the dual formulation. Thanks @Nino van Hooff for pointing this out, and @JamesKo for spotting my mistake.Note: One should not ignore this warning.
This warning came about because
Solving the linear SVM is just solving a quadratic optimization problem. The solver is typically an iterative algorithm that keeps a running estimate of the solution (i.e., the weight and bias for the SVM). It stops running when the solution corresponds to an objective value that is optimal for this convex optimization problem, or when it hits the maximum number of iterations set.
If the algorithm does not converge, then the current estimate of the SVM's parameters are not guaranteed to be any good, hence the predictions can also be complete garbage.
Edit
In addition, consider the comment by @Nino van Hooff and @5ervant to use the dual formulation of the SVM. This is especially important if the number of features you have, D, is more than the number of training examples N. This is what the dual formulation of the SVM is particular designed for and helps with the conditioning of the optimization problem. Credit to @5ervant for noticing and pointing this out.
Furthermore, @5ervant also pointed out the possibility of changing the solver, in particular the use of the L-BFGS solver. Credit to him (i.e., upvote his answer, not mine).
I would like to provide a quick rough explanation for those who are interested (I am :)) why this matters in this case. Second-order methods, and in particular approximate second-order method like the L-BFGS solver, will help with ill-conditioned problems because it is approximating the Hessian at each iteration and using it to scale the gradient direction. This allows it to get better convergence rate but possibly at a higher compute cost per iteration. That is, it takes fewer iterations to finish but each iteration will be slower than a typical first-order method like gradient-descent or its variants.
For e.g., a typical first-order method might update the solution at each iteration like
x(k + 1) = x(k) - alpha(k) * gradient(f(x(k)))
where alpha(k), the step size at iteration k, depends on the particular choice of algorithm or learning rate schedule.
A second order method, for e.g., Newton, will have an update equation
x(k + 1) = x(k) - alpha(k) * Hessian(x(k))^(-1) * gradient(f(x(k)))
That is, it uses the information of the local curvature encoded in the Hessian to scale the gradient accordingly. If the problem is ill-conditioned, the gradient will be pointing in less than ideal directions and the inverse Hessian scaling will help correct this.
In particular, L-BFGS mentioned in @5ervant's answer is a way to approximate the inverse of the Hessian as computing it can be an expensive operation.
However, second-order methods might converge much faster (i.e., requires fewer iterations) than first-order methods like the usual gradient-descent based solvers, which as you guys know by now sometimes fail to even converge. This can compensate for the time spent at each iteration.
In summary, if you have a well-conditioned problem, or if you can make it well-conditioned through other means such as using regularization and/or feature scaling and/or making sure you have more examples than features, you probably don't have to use a second-order method. But these days with many models optimizing non-convex problems (e.g., those in DL models), second order methods such as L-BFGS methods plays a different role there and there are evidence to suggest they can sometimes find better solutions compared to first-order methods. But that is another story.
as Frank said Firebase stores sequence of values in the format of "key": "Value"
which is a Map structure
to get List from this sequence you have to
GenericTypeIndicator<HashMap<String, Object>> objectsGTypeInd = new GenericTypeIndicator<HashMap<String, Object>>() {};
Map<String, Object> objectHashMap = dataSnapShot.getValue(objectsGTypeInd);
ArrayList<Object> objectArrayList = new ArrayList<Object>(objectHashMap.values());
Works fine for me, Hope it helps.
This is how I would go about it.
$posts = $this->post->orderBy('id', 'DESC')->get();
A Simple One-Line Solution:
let query = Object.assign.apply(null, location.search.slice(1).split('&').map(entry => ({ [entry.split('=')[0]]: entry.split('=')[1] })));
Expanded & Explained:
// define variable
let query;
// fetch source query
query = location.search;
// skip past the '?' delimiter
query = query.slice(1);
// split source query by entry delimiter
query = query.split('&');
// replace each query entry with an object containing the query entry
query = query.map((entry) => {
// get query entry key
let key = entry.split('=')[0];
// get query entry value
let value = entry.split('=')[1];
// define query object
let container = {};
// add query entry to object
container[key] = value;
// return query object
return container;
});
// merge all query objects
query = Object.assign.apply(null, query);
You put your template in the wrong place. From the Flask docs:
Flask will look for templates in the templates folder. So if your application is a module, this folder is next to that module, if it’s a package it’s actually inside your package: See the docs for more information: http://flask.pocoo.org/docs/quickstart/#rendering-templates
I found this, and it works for me:
/(\^|\~?)(\d|x|\*)+\.(\d|x|\*)+\.(\d|x|\*)+
My solution is to use built-in stuffs with some fallbacks.
I picked the strategy from an answer to another similar question on stackoverflow but I can't find it now.
It checks the BOM first using the built-in logic in StreamReader, if there's BOM, the encoding will be something other than Encoding.Default
, and we should trust that result.
If not, it checks whether the bytes sequence is valid UTF-8 sequence. if it is, it will guess UTF-8 as the encoding, and if not, again, the default ASCII encoding will be the result.
static Encoding getEncoding(string path) {
var stream = new FileStream(path, FileMode.Open);
var reader = new StreamReader(stream, Encoding.Default, true);
reader.Read();
if (reader.CurrentEncoding != Encoding.Default) {
reader.Close();
return reader.CurrentEncoding;
}
stream.Position = 0;
reader = new StreamReader(stream, new UTF8Encoding(false, true));
try {
reader.ReadToEnd();
reader.Close();
return Encoding.UTF8;
}
catch (Exception) {
reader.Close();
return Encoding.Default;
}
}
Although you cannot use different sized slides in one PowerPoint file, for the actual presentation you can link several different files together to create a presentation that has different slide sizes.
The process to do so is as follows:
Reference to Office Support Page where this solution was first posted. https://support.office.com/en-us/article/can-i-use-portrait-and-landscape-slide-orientation-in-the-same-presentation-d8c21781-1fb6-4406-bcd6-25cfac37b5d6?ocmsassetID=HA010099556&CorrelationId=1ac4e97f-bfe6-47b1-bab6-5783e78d126d&ui=en-US&rs=en-US&ad=US
Thanks for the responses. I found a solution tho.
UPDATE Sales_Import
SET AccountNumber = (SELECT RetrieveAccountNumber.AccountNumber
FROM RetrieveAccountNumber
WHERE Sales_Import.leadid =RetrieveAccountNumber.LeadID)
WHERE Sales_Import.leadid = (SELECT RetrieveAccountNumber.LeadID
FROM RetrieveAccountNumber
WHERE Sales_Import.leadid = RetrieveAccountNumber.LeadID)
sudo is a command for Linux so it cant be used in windows so you will get that error
Works starting with windows XP, not available in win 2000 or lower:
This is the quickest way to do it:
Process.Start("shutdown","/s /t 0");
Otherwise use P/Invoke or WMI like others have said.
Edit: how to avoid creating a window
var psi = new ProcessStartInfo("shutdown","/s /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
@shrx I've succeeded to unpack the BSD.pkg (part of the Yosemite installer) by using "pbzx" command.
pbzx <pkg> | cpio -idmu
The "pbzx" command can be downloaded from the following link:
While I think your best bet is to use Joiner from Guava, if I were to code it by hand I find this approach more elegant that the 'first' flag or chopping the last comma off.
private String commas(Iterable<String> strings) {
StringBuilder buffer = new StringBuilder();
Iterator<String> it = strings.iterator();
if (it.hasNext()) {
buffer.append(it.next());
while (it.hasNext()) {
buffer.append(',');
buffer.append(it.next());
}
}
return buffer.toString();
}
In the recent Git, you can add -r
/--rebase
on pull
command to rebase your current branch on top of the upstream branch after fetching. The warning should disappear, but there is a risk that you'll get some conflicts which you'll need to solve.
Alternatively you can checkout different branch with force, then go back to master
again, e.g.:
git checkout origin/master -f
git checkout master -f
Then pull it again as usual:
git pull origin master
Using this method can save you time from stashing (git stash
) and potential permission issues, reseting files (git reset HEAD --hard
), removing files (git clean -fd
), etc. Also the above it's easier to remember.
Windows 10, Git v2.13.2
My .gitconfig. Remember to add escape character for '\' and '"'.
[diff]
tool = bc4
[difftool]
prompt = false
[difftool "bc4"]
cmd = \"C:\\Program Files\\Beyond Compare 4\\BCompare.exe\" \"$LOCAL\" \"$REMOTE\"
[merge]
tool = bc4
[mergetool "bc4"]
path = C:\\Program Files\\Beyond Compare 4\\BCompare.exe
You may reference setting up beyond compare as difftool for using git commands to config it.
Seems there is some error in your data URL.
You can use this online base64 encode / base64 decode tool to encode your images for embedding: http://base64online.org/encode/
Check "Format as Data URL" option to format base64 data as URL.
If you already committed the changes than you would have to revert changes.
If you didn't commit yet, just do a clean checkout git checkout .
Evaluation of main answers with a performance benchmark which confirms concerns that the current chosen answer makes costly regex operations under the hood
To date the provided answers come in 3 main styles (ignoring the JavaScript answer ;) ):
In terms of code size clearly the String.replace is the most terse. The simple Java implementation is slightly smaller and cleaner (IMHO) than the Lambda (don't get me wrong - I use Lambdas often where they are appropriate)
Execution speed was, in order of fastest to slowest: simple Java implementation, Lambda and then String.replace() (that invokes regex).
By far the fastest implementation was the simple Java implementation tuned so that it preallocates the StringBuilder buffer to the max possible result length and then simply appends chars to the buffer that are not in the "chars to delete" string. This avoids any reallocates that would occur for Strings > 16 chars in length (the default allocation for StringBuilder) and it avoids the "slide left" performance hit of deleting characters from a copy of the string that occurs is the Lambda implementation.
The code below runs a simple benchmark test, running each implementation 1,000,000 times and logs the elapsed time.
The exact results vary with each run but the order of performance never changes:
Start simple Java implementation
Time: 157 ms
Start Lambda implementation
Time: 253 ms
Start String.replace implementation
Time: 634 ms
The Lambda implementation (as copied from Kaplan's answer) may be slower because it performs a "shift left by one" of all characters to the right of the character being deleted. This would obviously get worse for longer strings with lots of characters requiring deletion. Also there might be some overhead in the Lambda implementation itself.
The String.replace implementation, uses regex and does a regex "compile" at each call. An optimization of this would be to use regex directly and cache the compiled pattern to avoid the cost of compiling it each time.
package com.sample;
import java.util.function.BiFunction;
import java.util.stream.IntStream;
public class Main {
static public String deleteCharsSimple(String fromString, String charsToDelete)
{
StringBuilder buf = new StringBuilder(fromString.length()); // Preallocate to max possible result length
for(int i = 0; i < fromString.length(); i++)
if (charsToDelete.indexOf(fromString.charAt(i)) < 0)
buf.append(fromString.charAt(i)); // char not in chars to delete so add it
return buf.toString();
}
static public String deleteCharsLambda(String fromString1, String charsToDelete)
{
BiFunction<String, String, String> deleteChars = (fromString, chars) -> {
StringBuilder buf = new StringBuilder(fromString);
IntStream.range(0, buf.length()).forEach(i -> {
while (i < buf.length() && chars.indexOf(buf.charAt(i)) >= 0)
buf.deleteCharAt(i);
});
return (buf.toString());
};
return deleteChars.apply(fromString1, charsToDelete);
}
static public String deleteCharsReplace(String fromString, String charsToDelete)
{
return fromString.replace(charsToDelete, "");
}
public static void main(String[] args)
{
String str = "XXXTextX XXto modifyX";
String charsToDelete = "X"; // Should only be one char as per OP's requirement
long start, end;
System.out.println("Start simple");
start = System.currentTimeMillis();
for (int i = 0; i < 1000000; i++)
deleteCharsSimple(str, charsToDelete);
end = System.currentTimeMillis();
System.out.println("Time: " + (end - start));
System.out.println("Start lambda");
start = System.currentTimeMillis();
for (int i = 0; i < 1000000; i++)
deleteCharsLambda(str, charsToDelete);
end = System.currentTimeMillis();
System.out.println("Time: " + (end - start));
System.out.println("Start replace");
start = System.currentTimeMillis();
for (int i = 0; i < 1000000; i++)
deleteCharsReplace(str, charsToDelete);
end = System.currentTimeMillis();
System.out.println("Time: " + (end - start));
}
}
here is my data extension. add this and you can call data.ToString()
import Foundation
extension Data
{
func toString() -> String?
{
return String(data: self, encoding: .utf8)
}
}
(as of Jan 1st, 2021)
Any over version 3.9.x there is no support for TensorFlow 2. If you are installing packages via pip with 3.9, you simply get a "package doesn't exist" message. After reverting to the latest 3.8.x. Thought I would drop this here, I will update when 3.9.x is working with Tensorflow 2.x
You can try something like below
$($.parseHTML(<<table html string variable here>>)).find("td:contains('<<some text to find>>')").first().prev().text();
Can you try the following:
float: right;
Probably, there is something wrong with the default region while configuring aws. In your case, the URL says "https://s3.us-east-1a.amazonaws.com/"
In your command prompt,
aws configure, enter your keys, Now fix your region from us-east-1a to us-east-1.
Kindly check the syntax according to the CLI you are using. This will be helpful.
The problem is that the second part of your substring argument is including the first index. You need to subtract the first index from your second index to make this work.
SELECT SUBSTRING(@Text, CHARINDEX('the dog', @Text)
, CHARINDEX('immediately',@text) - CHARINDEX('the dog', @Text) + Len('immediately'))
This issue started surfacing on my terminal after I enabled GitHub 2FA.
Now, I face this issue whenever I clone a private repository. This error:
remote: Repository not found.
fatal: repository 'https://github.com/kmario23/repo-name.git/' not found
is so awkward. Of course, I have this repo and I'm the owner of it.
Anyway, it seems the fix is now that we have to enter the GitHub username
one more time when cloning a private repo. Below is an example:
add your username
|-------|
$ git clone --recursive https://[email protected]/kmario23/repo-name.git
I was stuck in this problem until I noticed that I was not logged into my VPN.
If you have configured your proxy for a VPN, you need to login to your VPN to use the proxy.
to use it outside the VPN use the unset command:
git config --global --unset http.proxy
And remember to set the proxy when within the VPN.
With lodash (or underscore) You may do
var my_object = { a:undefined, b:2, c:4, d:undefined, e:null };
var passedKeys = _.reject(Object.keys(my_object), function(key){ return _.isUndefined(my_object[key]) || _.isNull(my_object[key]) })
newObject = {};
_.each(passedKeys, function(key){
newObject[key] = my_object[key];
});
Otherwise, with vanilla JavaScript, you can do
var my_object = { a:undefined, b:2, c:4, d:undefined };
var new_object = {};
Object.keys(my_object).forEach(function(key){
if (typeof my_object[key] != 'undefined' && my_object[key]!=null){
new_object[key] = my_object[key];
}
});
Not to use a falsey test, because not only "undefined" or "null" will be rejected, also is other falsey value like "false", "0", empty string, {}. Thus, just to make it simple and understandable, I opted to use explicit comparison as coded above.
As of Laravel 5.6, if you have this kind of structure and you want to include another blade file inside a subfolder,
|--- views
|------- parentFolder (Folder)
|---------- name.blade.php (Blade File)
|---------- childFolder (Folder)
|-------------- mypage.blade.php (Blade File)
name.blade.php
<html>
@include('parentFolder.childFolder.mypage')
</html>
You can use the code below to find a specific value.
WHERE col1 LIKE '%[%]75%'
When you want a single digit number after the% sign, you can write the following code.
WHERE col2 LIKE '%[%]_'
SciChart for Android is a relative newcomer, but brings extremely fast high performance real-time charting to the Android platform.
SciChart is a commercial control but available under royalty free distribution / per developer licensing. There is also free licensing available for educational use with some conditions.
Some useful links can be found below:
Disclosure: I am the tech lead on the SciChart project!
CSS to detect screen orientation:
@media screen and (orientation:portrait) { … }
@media screen and (orientation:landscape) { … }
The CSS definition of a media query is at http://www.w3.org/TR/css3-mediaqueries/#orientation
The non-recursive version of the function is not too hard - here it is for integers:
long powi(long x, unsigned n)
{
long p = x;
long r = 1;
while (n > 0)
{
if (n % 2 == 1)
r *= p;
p *= p;
n /= 2;
}
return(r);
}
(Hacked out of code for raising a double value to an integer power - had to remove the code to deal with reciprocals, for example.)
I've used Blat ( http://www.blat.net/ ) for many years. It's a simple command line utility that can send email from command line. It's free and opensource.
You can use command like "Blat myfile.txt -to [email protected] -server smtp.domain.com -port 6000"
Here is some other software you can try to send email from command line (I've never used them):
http://caspian.dotconf.net/menu/Software/SendEmail/
http://www.petri.co.il/sendmail.htm
http://www.petri.co.il/software/mailsend105.zip
http://retired.beyondlogic.org/solutions/cmdlinemail/cmdlinemail.htm
Here ( http://www.petri.co.il/send_mail_from_script.htm ) you can find other various way of sending email from a VBS script, plus link to some of the mentioned software
The following VBScript code is taken from that page
Set objEmail = CreateObject("CDO.Message")
objEmail.From = "[email protected]"
objEmail.To = "[email protected]"
objEmail.Subject = "Server is down!"
objEmail.Textbody = "Server100 is no longer accessible over the network."
objEmail.Send
Save the file as something.vbs
Set Msg = CreateObject("CDO.Message")
With Msg
.To = "[email protected]"
.From = "[email protected]"
.Subject = "Hello"
.TextBody = "Just wanted to say hi."
.Send
End With
Save the file as something2.vbs
I think these VBS scripts use the windows default mail server, if present. I've not tested these scripts...
Preferences --> Build, Execution, Deployment --> Gradle --> Android studio
See man git-add
:
-f, --force
Allow adding otherwise ignored files.
So run this
git add --force my/ignore/file.foo
use this code to redirect the page
echo "<script>alert('There are no fields to generate a report');document.location='admin/ahm/panel'</script>";
This is not mentioned in you post but I suspect you are initiating an SSL connection from the browser to Apache, where VirtualHosts are configured, and Apache does a revese proxy to your Tomcat.
There is a serious bug in (some versions ?) of IE that sends the 'wrong' host information in an SSL connection (see EDIT below) and confuses the Apache VirtualHosts. In short the server name presented is the one of the reverse DNS resolution of the IP, not the one in the URL.
The workaround is to have one IP address per SSL virtual hosts/server name. Is short, you must end up with something like
1 server name == 1 IP address == 1 certificate == 1 Apache Virtual Host
EDIT
Though the conclusion is correct, the identification of the problem is better described here http://en.wikipedia.org/wiki/Server_Name_Indication
You cannot assign an rvalue to an rvalue.
if (strcmp("hello", "hello") = 0)
is wrong. Suggestions:
if (strcmp("hello", "hello") == 0)
^
=
is the assign operator.
==
is the equal to operator.
I know many new programmers are confused with this fact.
I know the question is about getting the day of week as string (e.g. the short name), but for anybody who is looking for the numeric day of week (as I was), you can use the new "u" format string, supported since Java 7. For example:
new SimpleDateFormat("u").format(new Date());
returns today's day-of-week index, namely: 1 = Monday, 2 = Tuesday, ..., 7 = Sunday.
Someone asked about adding attributes (specifically, 'rows' and 'cols'). If you're using Razor, you could just do this:
@Html.TextAreaFor(model => model.Text, new { cols = 35, @rows = 3 })
That works for me. The '@' is used to escape keywords so they are treated as variables/properties.
RFC3986 defines two sets of characters you can use in a URI:
Reserved Characters: :/?#[]@!$&'()*+,;=
reserved = gen-delims / sub-delims
gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@"
sub-delims = "!" / "$" / "&" / "'" / "(" / ")" / "*" / "+" / "," / ";" / "="
The purpose of reserved characters is to provide a set of delimiting characters that are distinguishable from other data within a URI. URIs that differ in the replacement of a reserved character with its corresponding percent-encoded octet are not equivalent.
Unreserved Characters: A-Za-z0-9-_.~
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
Characters that are allowed in a URI but do not have a reserved purpose are called unreserved.
I learned Vim. It wasn't too much effort. Now I absolutely love ci" ci( cw V:s/from/to/g