Since the SERVICE_USER table is not a pure join table, but has additional functional fields (blocked), you must map it as an entity, and decompose the many to many association between User and Service into two OneToMany associations : One User has many UserServices, and one Service has many UserServices.
You haven't shown us the most important part : the mapping and initialization of the relationships between your entities (i.e. the part you have problems with). So I'll show you how it should look like.
If you make the relationships bidirectional, you should thus have
class User {
@OneToMany(mappedBy = "user")
private Set<UserService> userServices = new HashSet<UserService>();
}
class UserService {
@ManyToOne
@JoinColumn(name = "user_id")
private User user;
@ManyToOne
@JoinColumn(name = "service_code")
private Service service;
@Column(name = "blocked")
private boolean blocked;
}
class Service {
@OneToMany(mappedBy = "service")
private Set<UserService> userServices = new HashSet<UserService>();
}
If you don't put any cascade on your relationships, then you must persist/save all the entities. Although only the owning side of the relationship (here, the UserService side) must be initialized, it's also a good practice to make sure both sides are in coherence.
User user = new User();
Service service = new Service();
UserService userService = new UserService();
user.addUserService(userService);
userService.setUser(user);
service.addUserService(userService);
userService.setService(service);
session.save(user);
session.save(service);
session.save(userService);
There is another case where this status will be returned: if the Jackson mapper cannot figure out how to serialize your bean. For example, if you have two accessor methods for the same boolean property, isFoo()
and getFoo()
.
What's happening is that Spring's MappingJackson2HttpMessageConverter calls Jackson's StdSerializerProvider to see if it can convert your object. At the bottom of the call chain, StdSerializerProvider._createAndCacheUntypedSerializer
throws a JsonMappingException
with an informative message. However, this exception is swallowed by StdSerializerProvider._createAndCacheUntypedSerializer
, which tells Spring that it can't convert the object. Having run out of converters, Spring reports that it's not being given an Accept
header that it can use, which of course is bogus when you're giving it */*
.
There is a bug for this behavior, but it was closed as "cannot reproduce": the method that's being called doesn't declare that it can throw, so swallowing exceptions is apparently an appropriate solution (yes, that was sarcasm). Unfortunately, Jackson doesn't have any logging ... and there are a lot of comments in the codebase wishing it did, so I suspect this isn't the only hidden gotcha.
Yes. It is possible :D
SELECT SUM(totalHours) totalHours
FROM
(
select sum(hours) totalHours from resource
UNION ALL
select sum(hours) totalHours from projects-time
) s
As a sidenote, the tablename projects-time
must be delimited to avoid syntax error. Delimiter symbols vary on RDBMS you are using.
Yes its called negative lookahead. It goes like this - (?!regex here)
. So abc(?!def)
will match abc not followed by def. So it'll match abce, abc, abck, etc.
Similarly there is positive lookahead - (?=regex here)
. So abc(?=def)
will match abc followed by def.
There are also negative and positive lookbehind - (?<!regex here)
and (?<=regex here)
respectively
One point to note is that the negative lookahead is zero-width. That is, it does not count as having taken any space.
So it may look like a(?=b)c
will match "abc" but it won't. It will match 'a', then the positive lookahead with 'b' but it won't move forward into the string. Then it will try to match the 'c' with 'b' which won't work. Similarly ^a(?=b)b$
will match 'ab' and not 'abb' because the lookarounds are zero-width (in most regex implementations).
More information on this page
You can find it here:
%USERPROFILE%\AppData\Local\Android\sdk\platform-tools
To save yourself the hassle in the future, add it to your path:
PATH
.For me, fny answers really got it all. since fetch is not throwing error, we need to throw/handle the error ourselves. Posting my solution with async/await. I think it's more strait forward and readable
Solution 1: Not throwing an error, handle the error ourselves
async _fetch(request) {
const fetchResult = await fetch(request); //Making the req
const result = await fetchResult.json(); // parsing the response
if (fetchResult.ok) {
return result; // return success object
}
const responseError = {
type: 'Error',
message: result.message || 'Something went wrong',
data: result.data || '',
code: result.code || '',
};
const error = new Error();
error.info = responseError;
return (error);
}
Here if we getting an error, we are building an error object, plain JS object and returning it, the con is that we need to handle it outside. How to use:
const userSaved = await apiCall(data); // calling fetch
if (userSaved instanceof Error) {
debug.log('Failed saving user', userSaved); // handle error
return;
}
debug.log('Success saving user', userSaved); // handle success
Solution 2: Throwing an error, using try/catch
async _fetch(request) {
const fetchResult = await fetch(request);
const result = await fetchResult.json();
if (fetchResult.ok) {
return result;
}
const responseError = {
type: 'Error',
message: result.message || 'Something went wrong',
data: result.data || '',
code: result.code || '',
};
let error = new Error();
error = { ...error, ...responseError };
throw (error);
}
Here we are throwing and error that we created, since Error ctor approve only string, Im creating the plain Error js object, and the use will be:
try {
const userSaved = await apiCall(data); // calling fetch
debug.log('Success saving user', userSaved); // handle success
} catch (e) {
debug.log('Failed saving user', userSaved); // handle error
}
Solution 3: Using customer error
async _fetch(request) {
const fetchResult = await fetch(request);
const result = await fetchResult.json();
if (fetchResult.ok) {
return result;
}
throw new ClassError(result.message, result.data, result.code);
}
And:
class ClassError extends Error {
constructor(message = 'Something went wrong', data = '', code = '') {
super();
this.message = message;
this.data = data;
this.code = code;
}
}
Hope it helped.
try
CREATE TABLE [dbo].[Names]
(
[Name] [nvarchar](64) NOT NULL,
[CreateTS] [smalldatetime] NOT NULL CONSTRAINT CreateTS_DF DEFAULT CURRENT_TIMESTAMP,
[UpdateTS] [smalldatetime] NOT NULL
)
PS I think a smalldatetime is good enough. You may decide differently.
Can you not do this at the "moment of impact" ?
In Sql Server, this is common:
Update dbo.MyTable
Set
ColA = @SomeValue ,
UpdateDS = CURRENT_TIMESTAMP
Where...........
Sql Server has a "timestamp" datatype.
But it may not be what you think.
Here is a reference:
http://msdn.microsoft.com/en-us/library/ms182776(v=sql.90).aspx
Here is a little RowVersion (synonym for timestamp) example:
CREATE TABLE [dbo].[Names]
(
[Name] [nvarchar](64) NOT NULL,
RowVers rowversion ,
[CreateTS] [datetime] NOT NULL CONSTRAINT CreateTS_DF DEFAULT CURRENT_TIMESTAMP,
[UpdateTS] [datetime] NOT NULL
)
INSERT INTO dbo.Names (Name,UpdateTS)
select 'John' , CURRENT_TIMESTAMP
UNION ALL select 'Mary' , CURRENT_TIMESTAMP
UNION ALL select 'Paul' , CURRENT_TIMESTAMP
select * , ConvertedRowVers = CONVERT(bigint,RowVers) from [dbo].[Names]
Update dbo.Names Set Name = Name
select * , ConvertedRowVers = CONVERT(bigint,RowVers) from [dbo].[Names]
Maybe a complete working example:
DROP TABLE [dbo].[Names]
GO
CREATE TABLE [dbo].[Names]
(
[Name] [nvarchar](64) NOT NULL,
RowVers rowversion ,
[CreateTS] [datetime] NOT NULL CONSTRAINT CreateTS_DF DEFAULT CURRENT_TIMESTAMP,
[UpdateTS] [datetime] NOT NULL
)
GO
CREATE TRIGGER dbo.trgKeepUpdateDateInSync_ByeByeBye ON dbo.Names
AFTER INSERT, UPDATE
AS
BEGIN
Update dbo.Names Set UpdateTS = CURRENT_TIMESTAMP from dbo.Names myAlias , inserted triggerInsertedTable where
triggerInsertedTable.Name = myAlias.Name
END
GO
INSERT INTO dbo.Names (Name,UpdateTS)
select 'John' , CURRENT_TIMESTAMP
UNION ALL select 'Mary' , CURRENT_TIMESTAMP
UNION ALL select 'Paul' , CURRENT_TIMESTAMP
select * , ConvertedRowVers = CONVERT(bigint,RowVers) from [dbo].[Names]
Update dbo.Names Set Name = Name , UpdateTS = '03/03/2003' /* notice that even though I set it to 2003, the trigger takes over */
select * , ConvertedRowVers = CONVERT(bigint,RowVers) from [dbo].[Names]
Matching on the "Name" value is probably not wise.
Try this more mainstream example with a SurrogateKey
DROP TABLE [dbo].[Names]
GO
CREATE TABLE [dbo].[Names]
(
SurrogateKey int not null Primary Key Identity (1001,1),
[Name] [nvarchar](64) NOT NULL,
RowVers rowversion ,
[CreateTS] [datetime] NOT NULL CONSTRAINT CreateTS_DF DEFAULT CURRENT_TIMESTAMP,
[UpdateTS] [datetime] NOT NULL
)
GO
CREATE TRIGGER dbo.trgKeepUpdateDateInSync_ByeByeBye ON dbo.Names
AFTER UPDATE
AS
BEGIN
UPDATE dbo.Names
SET UpdateTS = CURRENT_TIMESTAMP
From dbo.Names myAlias
WHERE exists ( select null from inserted triggerInsertedTable where myAlias.SurrogateKey = triggerInsertedTable.SurrogateKey)
END
GO
INSERT INTO dbo.Names (Name,UpdateTS)
select 'John' , CURRENT_TIMESTAMP
UNION ALL select 'Mary' , CURRENT_TIMESTAMP
UNION ALL select 'Paul' , CURRENT_TIMESTAMP
select * , ConvertedRowVers = CONVERT(bigint,RowVers) from [dbo].[Names]
Update dbo.Names Set Name = Name , UpdateTS = '03/03/2003' /* notice that even though I set it to 2003, the trigger takes over */
select * , ConvertedRowVers = CONVERT(bigint,RowVers) from [dbo].[Names]
Following that article:
You may just set GIT_SSH env. var. to the Putty's plink.exe program. (Then use the pageant.exe as a auth. agent)
Try the following:
List<string> test1 = new List<string> { "@bob.com", "@tom.com" };
List<string> test2 = new List<string> { "[email protected]", "[email protected]" };
var output = from goodEmails in test2
where !(from email in test2
from domain in test1
where email.EndsWith(domain)
select email).Contains(goodEmails)
select goodEmails;
This works with the test set provided (and looks correct).
Just for clarification, CorFlags.exe is part of the .NET Framework SDK. I have the development tools on my machine, and the simplest way for me determine whether a DLL is 32-bit only is to:
Open the Visual Studio Command Prompt (In Windows: menu Start/Programs/Microsoft Visual Studio/Visual Studio Tools/Visual Studio 2008 Command Prompt)
CD to the directory containing the DLL in question
Run corflags like this:
corflags MyAssembly.dll
You will get output something like this:
Microsoft (R) .NET Framework CorFlags Conversion Tool. Version 3.5.21022.8
Copyright (c) Microsoft Corporation. All rights reserved.
Version : v2.0.50727
CLR Header: 2.5
PE : PE32
CorFlags : 3
ILONLY : 1
32BIT : 1
Signed : 0
As per comments the flags above are to be read as following:
I think this is the less code it's possible, it uses Guava Joiner class:
Joiner.on("").join(Collections.nCopies(10, " "));
I am using the code listed below to handle null cells in an Excel sheet that is read in to a datatable.
if (!reader.IsDBNull(2))
{
row["Oracle"] = (string)reader[2];
}
Thanks a lot for your link to the requests module. It's just perfect. Below the solution to my problem.
import requests
import json
url = 'https://www.mywbsite.fr/Services/GetFromDataBaseVersionned'
payload = {
"Host": "www.mywbsite.fr",
"Connection": "keep-alive",
"Content-Length": 129,
"Origin": "https://www.mywbsite.fr",
"X-Requested-With": "XMLHttpRequest",
"User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5",
"Content-Type": "application/json",
"Accept": "*/*",
"Referer": "https://www.mywbsite.fr/data/mult.aspx",
"Accept-Encoding": "gzip,deflate,sdch",
"Accept-Language": "fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4",
"Accept-Charset": "ISO-8859-1,utf-8;q=0.7,*;q=0.3",
"Cookie": "ASP.NET_SessionId=j1r1b2a2v2w245; GSFV=FirstVisit=; GSRef=https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CHgQFjAA&url=https://www.mywbsite.fr/&ei=FZq_T4abNcak0QWZ0vnWCg&usg=AFQjCNHq90dwj5RiEfr1Pw; HelpRotatorCookie=HelpLayerWasSeen=0; NSC_GSPOUGS!TTM=ffffffff09f4f58455e445a4a423660; GS=Site=frfr; __utma=1.219229010.1337956889.1337956889.1337958824.2; __utmb=1.1.10.1337958824; __utmc=1; __utmz=1.1337956889.1.1.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided)"
}
# Adding empty header as parameters are being sent in payload
headers = {}
r = requests.post(url, data=json.dumps(payload), headers=headers)
print(r.content)
SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
@PsychoWoods' answer is good. I would like to offer my own solution. This Javascript function takes an image data URL and a width, scales it to the new width, and returns a new data URL.
// Take an image URL, downscale it to the given width, and return a new image URL.
function downscaleImage(dataUrl, newWidth, imageType, imageArguments) {
"use strict";
var image, oldWidth, oldHeight, newHeight, canvas, ctx, newDataUrl;
// Provide default values
imageType = imageType || "image/jpeg";
imageArguments = imageArguments || 0.7;
// Create a temporary image so that we can compute the height of the downscaled image.
image = new Image();
image.src = dataUrl;
oldWidth = image.width;
oldHeight = image.height;
newHeight = Math.floor(oldHeight / oldWidth * newWidth)
// Create a temporary canvas to draw the downscaled image on.
canvas = document.createElement("canvas");
canvas.width = newWidth;
canvas.height = newHeight;
// Draw the downscaled image on the canvas and return the new data URL.
ctx = canvas.getContext("2d");
ctx.drawImage(image, 0, 0, newWidth, newHeight);
newDataUrl = canvas.toDataURL(imageType, imageArguments);
return newDataUrl;
}
This code can be used anywhere you have a data URL and want a data URL for a downscaled image.
Seems like regular UNIQUE CONSTRAINT :)
CREATE TABLE example (
a integer,
b integer,
c integer,
UNIQUE (a, c));
More here
jww is right — you're referencing the wrong intermediate certificate.
As you have been issued with a SHA256 certificate, you will need the SHA256 intermediate. You can grab it from here: http://secure2.alphassl.com/cacert/gsalphasha2g2r1.crt
I use an alpha-transparent PNG for that:
div.semi-transparent {
background: url('semi-transparent.png');
}
if you do not want to use the collections library, you can always do something like this:
given that a
and b
are your lists, the following returns the number of matching elements (it considers the order).
sum([1 for i,j in zip(a,b) if i==j])
Therefore,
len(a)==len(b) and len(a)==sum([1 for i,j in zip(a,b) if i==j])
will be True
if both lists are the same, contain the same elements and in the same order. False
otherwise.
So, you can define the compare function like the first response above,but without the collections library.
compare = lambda a,b: len(a)==len(b) and len(a)==sum([1 for i,j in zip(a,b) if i==j])
and
>>> compare([1,2,3], [1,2,3,3])
False
>>> compare([1,2,3], [1,2,3])
True
>>> compare([1,2,3], [1,2,4])
False
In your particular case the issue seem to be with accessing the site from non-canonical url (www.site.com vs. site.com).
Instead of fixing CORS issue (which may require writing proxy to server fonts with proper CORS headers depending on service provider) you can normalize your Urls to always server content on canonical Url and simply redirect if one requests page without "www.".
Alternatively you can upload fonts to different server/CDN that is known to have CORS headers configured or you can easily do so.
I like and use many of the answers here, so I'd choose whichever works best for you. That said, the method I prefer when I need something like objective-c's @synchronized
uses the defer
statement introduced in swift 2.
{
objc_sync_enter(lock)
defer { objc_sync_exit(lock) }
//
// code of critical section goes here
//
} // <-- lock released when this block is exited
The nice thing about this method, is that your critical section can exit the containing block in any fashion desired (e.g., return
, break
, continue
, throw
), and "the statements within the defer statement are executed no matter how program control is transferred."1
get()
returns a single object. If there is no existing object to return, you will receive <class>.DoesNotExist
. If your query returns more than one object, then you will get MultipleObjectsReturned
. You can check here for more details about get() queries.
Similarly, Django will complain if more than one item matches the get() query. In this case, it will raise MultipleObjectsReturned, which again is an attribute of the model class itself.
M2M will return any number of query that it is related to. In this case you can receive zero, one or more items with your query.
In your models you can us following:
for _topic in topic.objects.all():
_topic.learningobjective_set.all()
you can use _set
to execute a select query on M2M. In above case, you will filter all learningObjective
s related to each topic
The easiest and the most correct (and legal) way is to use graph api.
Just perform the request: http://graph.facebook.com/4
which returns
{
"id": "4",
"name": "Mark Zuckerberg",
"first_name": "Mark",
"last_name": "Zuckerberg",
"link": "http://www.facebook.com/zuck",
"username": "zuck",
"gender": "male",
"locale": "en_US"
}
and take the link
key.
You can also reduce the traffic by using fields
parameter: http://graph.facebook.com/4?fields=link to get only what you need:
{
"link": "http://www.facebook.com/zuck",
"id": "4"
}
You are specifically asking about how they internally work, so here you are:
private int counter;
public int getNextUniqueIndex() {
return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several threads can read the value at the same time), but also visibility problems. The value might only be stored in "local" CPU memory (some cache) and not be visible for other CPUs/cores (and thus - threads). This is why many refer to local copy of a variable in a thread. It is very unsafe. Consider this popular but broken thread-stopping code:
private boolean stopped;
public void run() {
while(!stopped) {
//do some work
}
}
public void pleaseStop() {
stopped = true;
}
Add volatile
to stopped
variable and it works fine - if any other thread modifies stopped
variable via pleaseStop()
method, you are guaranteed to see that change immediately in working thread's while(!stopped)
loop. BTW this is not a good way to interrupt a thread either, see: How to stop a thread that is running forever without any use and Stopping a specific java thread.
AtomicInteger
private AtomicInteger counter = new AtomicInteger();
public int getNextUniqueIndex() {
return counter.getAndIncrement();
}
The AtomicInteger
class uses CAS (compare-and-swap) low-level CPU operations (no synchronization needed!) They allow you to modify a particular variable only if the present value is equal to something else (and is returned successfully). So when you execute getAndIncrement()
it actually runs in a loop (simplified real implementation):
int current;
do {
current = get();
} while(!compareAndSet(current, current + 1));
So basically: read; try to store incremented value; if not successful (the value is no longer equal to current
), read and try again. The compareAndSet()
is implemented in native code (assembly).
volatile
without synchronizationprivate volatile int counter;
public int getNextUniqueIndex() {
return counter++;
}
This code is not correct. It fixes the visibility issue (volatile
makes sure other threads can see change made to counter
) but still has a race condition. This has been explained multiple times: pre/post-incrementation is not atomic.
The only side effect of volatile
is "flushing" caches so that all other parties see the freshest version of the data. This is too strict in most situations; that is why volatile
is not default.
volatile
without synchronization (2)volatile int i = 0;
void incIBy5() {
i += 5;
}
The same problem as above, but even worse because i
is not private
. The race condition is still present. Why is it a problem? If, say, two threads run this code simultaneously, the output might be + 5
or + 10
. However, you are guaranteed to see the change.
synchronized
void incIBy5() {
int temp;
synchronized(i) { temp = i }
synchronized(i) { i = temp + 5 }
}
Surprise, this code is incorrect as well. In fact, it is completely wrong. First of all you are synchronizing on i
, which is about to be changed (moreover, i
is a primitive, so I guess you are synchronizing on a temporary Integer
created via autoboxing...) Completely flawed. You could also write:
synchronized(new Object()) {
//thread-safe, SRSLy?
}
No two threads can enter the same synchronized
block with the same lock. In this case (and similarly in your code) the lock object changes upon every execution, so synchronized
effectively has no effect.
Even if you have used a final variable (or this
) for synchronization, the code is still incorrect. Two threads can first read i
to temp
synchronously (having the same value locally in temp
), then the first assigns a new value to i
(say, from 1 to 6) and the other one does the same thing (from 1 to 6).
The synchronization must span from reading to assigning a value. Your first synchronization has no effect (reading an int
is atomic) and the second as well. In my opinion, these are the correct forms:
void synchronized incIBy5() {
i += 5
}
void incIBy5() {
synchronized(this) {
i += 5
}
}
void incIBy5() {
synchronized(this) {
int temp = i;
i = temp + 5;
}
}
It depends on where you're displaying the text. On the console or a textbox for example, \n will suffice. On a RichTextBox I think you need both.
You're calling e.nextElement()
twice inside your loop when you're only guaranteed that you can call it once without an exception. Rewrite the loop like so:
while(e.hasMoreElements()){
String param = e.nextElement();
System.out.println(param);
}
Rails 4:
If you want to use both not equal and equal, you can use:
user_id = 4
group_id = 27
GroupUser.where(group_id: group_id).where.not(user_id: user_id)
If you want to use a variety of operators (ie. >
, <
), at some point you may want to switch notations to the following:
GroupUser.where("group_id > ? AND user_id != ?", group_id, user_id)
Use tags label and our method for =, is bound to input. If follow the rules of the form, and avoid confusion with tags, use the following:
<style type="text/css">
label.lab:before { content: 'input: '; }
</style>
or compare (short code):
<style type="text/css">
div label { content: 'input: '; color: red; }
</style>
form....
<label class="lab" for="single"></label><input name="n" id="single" ...><label for="single"> - simle</label>
or compare (short code):
<div><label></label><input name="n" ...></div>
The asker commented:
I figure that if I understand a problem well enough to write a program that can figure it out, I don't need to do the work manually.
If he's writing a math expression solver as a learning exercise, using eval()
isn't going to help. Plus it's terrible design.
You might consider making a calculator using Reverse Polish Notation instead of standard math notation. It simplifies the parsing considerably. It would still be a good exercise
I use to do so:
from pylab import *
axes(frameon = 0)
...
show()
Answer for macOS 11 (Big Sur) in 2021
After installing Anaconda, run:
source /opt/anaconda3/bin/activate
conda init zsh
then close and reopen the Terminal window. The shell prompt should have a (base)
prefix.
NOTE: I found many articles online saying to update the PATH variable, but Anaconda actually recommends against doing so and running the two commands above instead, which they state in their documentation.
Try the following configuration:
log4j.rootLogger=TRACE, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.appender.debugLog=org.apache.log4j.FileAppender
log4j.appender.debugLog.File=logs/debug.log
log4j.appender.debugLog.layout=org.apache.log4j.PatternLayout
log4j.appender.debugLog.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.appender.reportsLog=org.apache.log4j.FileAppender
log4j.appender.reportsLog.File=logs/reports.log
log4j.appender.reportsLog.layout=org.apache.log4j.PatternLayout
log4j.appender.reportsLog.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.category.debugLogger=TRACE, debugLog
log4j.additivity.debugLogger=false
log4j.category.reportsLogger=DEBUG, reportsLog
log4j.additivity.reportsLogger=false
Then configure the loggers in the Java code accordingly:
static final Logger debugLog = Logger.getLogger("debugLogger");
static final Logger resultLog = Logger.getLogger("reportsLogger");
Do you want output to go to stdout
? If not, change the first line of log4j.properties
to:
log4j.rootLogger=OFF
and get rid of the stdout
lines.
You can use C++20 std::format
or the fmt::format
function from the {fmt} library, std::format
is based on:
#include <fmt/core.h>
int main()
std::string s = fmt::format("{:.2f}", 3.14159265359); // s == "3.14"
}
where 2
is a precision.
Regular Expressions
Context Free Grammars
Clickatell is a popular SMS gateway. It works in 200+ countries.
Their API offers a choice of connection options via: HTTP/S, SMPP, SMTP, FTP, XML, SOAP. Any of these options can be used from php.
The HTTP/S method is as simple as this:
http://api.clickatell.com/http/sendmsg?to=NUMBER&msg=Message+Body+Here
The SMTP method consists of sending a plain-text e-mail to: [email protected]
, with the following body:
user: xxxxx
password: xxxxx
api_id: xxxxx
to: 448311234567
text: Meet me at home
You can also test the gateway (incoming and outgoing) for free from your browser
None of the current answers helped me here. We were getting something like:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:
#.#.#:compile (default-compile) on project Streaming_Test: Compilation failure
[ERROR] Unable to locate the Javac Compiler in:
[ERROR] /opt/java/J7.0/../lib/tools.jar
This happens because the Java installation has determined that it is a JRE installation. It's expecting there to be JDK stuff above the JRE subdirectory, hence the ../lib
in the path. Our tools.jar
is in $JAVA_HOME/lib/tools.jar
not in $JAVA_HOME/../lib/tools.jar
.
Unfortunately, we do not have an option to install a JDK on our OS (don't ask) so that wasn't an option. I fixed the problem by adding the following to the maven pom.xml
:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<fork>true</fork> <!-- not sure if this is also needed -->
<executable>${JAVA_HOME}/bin/javac</executable>
<!-- ^^^^^^^^^^^^^^^^^^^^^^ -->
</configuration>
</plugin>
By pointing the executable to the right place this at least got past our compilation failures.
Just add a break after your ArrayList.remove(A) statement
You have to create a crt bundle then it will be fine. You will be receiving three crt files. Use them all! If you only used the domain.crt then there will be warning on android but not on PC.
I am on nginx. I opened domain_name.crt and then opened positivesslca2.crt, select all and copy to the end of domain_name.crt. Then open AddTrustExternalCARoot.crt, copy to the end of domain_name.crt again. Then install the domain_name.crt
works good.
I found in Linux kernel source code that PF_INET and AF_INET are the same. The following code is from file include/linux/socket.h, line 204 of Linux kernel 3.2.21 tree.
/* Protocol families, same as address families. */
...
#define PF_INET AF_INET
$file = '../image.jpg';
$type = 'image/jpeg';
header('Content-Type:'.$type);
header('Content-Length: ' . filesize($file));
$img = file_get_contents($file);
echo $img;
This is works for me! I have test it on code igniter. if i use readfile, the image won't display. Sometimes only display jpg, sometimes only big file. But after i changed it to "file_get_contents" , I get the flavour, and works!! this is the screenshoot: Screenshot of "secure image" from database
The key here is to visualise the call tree. Once done that, the complexity is:
nodes of the call tree * complexity of other code in the function
the latter term can be computed the same way we do for a normal iterative function.
Instead, the total nodes of a complete tree are computed as
C^L - 1
------- , when C>1
/ C - 1
/
# of nodes =
\
\
L , when C=1
Where C is number of children of each node and L is the number of levels of the tree (root included).
It is easy to visualise the tree. Start from the first call (root node) then draw a number of children same as the number of recursive calls in the function. It is also useful to write the parameter passed to the sub-call as "value of the node".
So, in the examples above:
n level 1 n-1 level 2 n-2 level 3 n-3 level 4 ... ~ n levels -> L = n
n n-5 n-10 n-15 ... ~ n/5 levels -> L = n/5
n n/5 n/5^2 n/5^3 ... ~ log5(n) levels -> L = log5(n)
n level 1 n-1 n-1 level 2 n-2 n-2 n-2 n-2 ... n-3 n-3 n-3 n-3 n-3 n-3 n-3 n-3 ... ... ~ n levels -> L = n
n n-5 n-10 n-15 ... ~ n/5 levels -> L = n/5
I had exactly the same error. My network is an internal one of a company. The proxy has been disabled from the IT team so for that we do not have to enable any proxy settings. I have commented the proxy setting in settings.xml file from the below mentioned locations C:\Users\vijay.singh.m2\settings.xml This fixed the same issue for me
As early as possible in your application, require and configure dotenv.
require('dotenv').config()
Use this convertor , It doesn't fail at all: Services_Json
// create a new instance of Services_JSON
$json = new Services_JSON();
// convert a complexe value to JSON notation, and send it to the browser
$value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));
$output = $json->encode($value);
print($output);
// prints: ["foo","bar",[1,2,"baz"],[3,[4]]]
// accept incoming POST data, assumed to be in JSON notation
$input = file_get_contents('php://input', 1000000);
$value = $json->decode($input);
// if you want to convert json to php arrays:
$json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);
Sure take a look at the Protected Member Variables question. It is recommended to use private as a default (just like C++ class
ses do) to reduce coupling. Protected member variables are most always a bad idea, protected member functions can be used for e.g. the Template Method pattern.
One easy way if you have App icon of size 1024 X 1024. just upload it on below site, It will generate icon folder Add AppIcon.appiconset
in to your application.
Step 1:
Upload your existing 1024 X 1024 icon on Below Site :
Step 2 :
It will send you mail.
Download icon.zip from email.
Step 3 : Drag and Drop AppIcon.appiconset
to your application. It will contain all require icon.
It may help you all.
Edit : I am not owner/ promoter of this site. It will save our time.
Based on your comments it sounds like you are doing something like this:
Thread thread = new Thread(new Runnable(){
public void run() { // do stuff }});
thread.start();
...
thread.wait();
There are three problems.
As others have said, obj.wait()
can only be called if the current thread holds the primitive lock / mutex for obj
. If the current thread does not hold the lock, you get the exception you are seeing.
The thread.wait()
call does not do what you seem to be expecting it to do. Specifically, thread.wait()
does not cause the nominated thread to wait. Rather it causes the current thread to wait until some other thread calls thread.notify()
or thread.notifyAll()
.
There is actually no safe way to force a Thread
instance to pause if it doesn't want to. (The nearest that Java has to this is the deprecated Thread.suspend()
method, but that method is inherently unsafe, as is explained in the Javadoc.)
If you want the newly started Thread
to pause, the best way to do it is to create a CountdownLatch
instance and have the thread call await()
on the latch to pause itself. The main thread would then call countDown()
on the latch to let the paused thread continue.
Orthogonal to the previous points, using a Thread
object as a lock / mutex may cause problems. For example, the javadoc for Thread::join
says:
This implementation uses a loop of
this.wait
calls conditioned onthis.isAlive
. As a thread terminates thethis.notifyAll
method is invoked. It is recommended that applications not usewait
,notify
, ornotifyAll
onThread
instances.
On client:
axios.get('/api', {
params: {
foo: 'bar'
}
});
On server:
function get(req, res, next) {
let param = req.query.foo
.....
}
If you want to allow a comma delimiter which will pass the following test cases:
0,00 => true
0.00 => true
01,00 => true
01.00 => true
0.000 => false
0-01 => false
then use this:
^\d+(\.|\,)\d{2}$
I had the same error and solved the problem by running the program code below:
# install_certifi.py
#
# sample script to install or update a set of default Root Certificates
# for the ssl module. Uses the certificates provided by the certifi package:
# https://pypi.python.org/pypi/certifi
import os
import os.path
import ssl
import stat
import subprocess
import sys
STAT_0o775 = ( stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR
| stat.S_IRGRP | stat.S_IWGRP | stat.S_IXGRP
| stat.S_IROTH | stat.S_IXOTH )
def main():
openssl_dir, openssl_cafile = os.path.split(
ssl.get_default_verify_paths().openssl_cafile)
print(" -- pip install --upgrade certifi")
subprocess.check_call([sys.executable,
"-E", "-s", "-m", "pip", "install", "--upgrade", "certifi"])
import certifi
# change working directory to the default SSL directory
os.chdir(openssl_dir)
relpath_to_certifi_cafile = os.path.relpath(certifi.where())
print(" -- removing any existing file or link")
try:
os.remove(openssl_cafile)
except FileNotFoundError:
pass
print(" -- creating symlink to certifi certificate bundle")
os.symlink(relpath_to_certifi_cafile, openssl_cafile)
print(" -- setting permissions")
os.chmod(openssl_cafile, STAT_0o775)
print(" -- update complete")
if __name__ == '__main__':
main()
ActiveX
is supported by Chrome.
Chrome check parameters defined in : control panel/Internet option/Security
.
Nevertheless,if it's possible to define four different area with IE
, Chrome
only check "Internet
" area.
As mentioned before you can use --extra-vars (-e) , but instead of specifying the pwd on the commandline so it doesn't end up in the history files you can save it to an environment variable. This way it also goes away when you close the session.
read -s PASS
ansible windows -i hosts -m win_ping -e "ansible_password=$PASS"
I know its been a while but Ill add to this, based on the most popular answer but with a little extension Id like to share the below:
static class ExtensionsThatWillAppearOnIEnumerables
{
public static T FirstOr<T>(this IEnumerable<T> source, Func<T, bool> predicate, Func<T> alternate)
{
var thing = source.FirstOrDefault(predicate);
if (thing != null)
return thing;
return alternate();
}
}
This allows me to call it inline as such with my own example I was having issues with:
_controlDataResolvers.FirstOr(x => x.AppliesTo(item.Key), () => newDefaultResolver()).GetDataAsync(conn, item.ToList())
So for me I just wanted a default resolver to be used inline, I can do my usual check and then pass in a function so a class isn't instantiated even if unused, its a function to execute when required instead!
In the view from a processor, It can be described by this pic
In the view from a processor, It can be described by this pic
The first argument of all methods is usually called self
. It refers to the instance for which the method is being called.
Let's say you have:
class A(object):
def foo(self):
print 'Foo'
def bar(self, an_argument):
print 'Bar', an_argument
Then, doing:
a = A()
a.foo() #prints 'Foo'
a.bar('Arg!') #prints 'Bar Arg!'
There's nothing special about this being called self
, you could do the following:
class B(object):
def foo(self):
print 'Foo'
def bar(this_object):
this_object.foo()
Then, doing:
b = B()
b.bar() # prints 'Foo'
In your specific case:
dangerous_device = MissileDevice(some_battery)
dangerous_device.move(dangerous_device.RIGHT)
(As suggested in comments MissileDevice.RIGHT
could be more appropriate here!)
You could declare all your constants at module level though, so you could do:
dangerous_device.move(RIGHT)
This, however, is going to depend on how you want your code to be organized!
In my case, I have to get 2 values what are objects. I share this simple solution.
$ran = array("a","b","c","d");
$ranval = array_map(function($i) use($ran){return $ran[$i];},array_rand($ran,2));
This worked for me, Thanks to ungalcrys
Show keyboard:
editText = (EditText)findViewById(R.id.myTextViewId);
editText.requestFocus();
InputMethodManager imm = (InputMethodManager)getSystemService(this.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,InputMethodManager.HIDE_IMPLICIT_ONLY);
Hide keyboard:
InputMethodManager imm = (InputMethodManager) getSystemService(this.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
I had a similar problem, and the solution for me was quite different from what the other users posted.
The problem with me was related to the project I was working last year, which required a certain proxy on maven settings (located at <path to maven folder>\maven\conf\settings.xml
and C:\Users\<my user>\.m2\settings.xml
). The proxy was blocking the download of required external packages.
The solution was to put back the original file (settings.xml
) on those places. Once things were restored, I was able to download the packages and everything worked.
If you don't want to place the watch inside a specific controller, you can add the watch for the whole aplication in Angular app run()
var myApp = angular.module('myApp', []);
myApp.run(function($rootScope) {
$rootScope.$on("$locationChangeStart", function(event, next, current) {
// handle route changes
});
});
This may be the good solution for you: change the code like this very little change
.box{
position: relative;
}
.box:hover .hidden{
opacity: 1;
width:500px;
}
.box .hidden{
background: yellow;
height: 334px;
position: absolute;
top: 0;
left: 0;
width: 0;
opacity: 0;
transition: all 1s ease;
}
See demo here
If both the list are too big and when we use lamda expression then it will take a long time to fetch . Better to use linq in this case to fetch parameters list:
var items = (from x in parameters
join y in myStrings on x.Source equals y
select x)
.ToList();
The above answers are good and correct. However, the code may not give the expected results. Allow me to add something to explain why this is very important.
It is true that adding the scroll-behavior: smooth to the html element allows smooth scrolling for the whole page. However not all web browsers support smooth scrolling using HTML.
So if you want to create a website accessible to all user, regardless of their web browsers, it is highly recommended to use JavaScript or a JavaScript library such as jQuery, to create a solution that will work for all browsers.
Otherwise, some users may not enjoy the smooth scrolling of your website / platform.
I can give a simpler example on how it can be applicable.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<script>_x000D_
$(document).ready(function(){_x000D_
// Add smooth scrolling to all links_x000D_
$("a").on('click', function(event) {_x000D_
// Make sure this.hash has a value before overriding default behavior_x000D_
if (this.hash !== "") {_x000D_
// Prevent default anchor click behavior_x000D_
event.preventDefault();_x000D_
// Store hash_x000D_
var hash = this.hash;_x000D_
// Using jQuery's animate() method to add smooth page scroll_x000D_
// The optional number (800) specifies the number of milliseconds it takes to scroll to the specified area_x000D_
$('html, body').animate({_x000D_
scrollTop: $(hash).offset().top_x000D_
}, 800, function(){_x000D_
// Add hash (#) to URL when done scrolling (default click behavior)_x000D_
window.location.hash = hash;_x000D_
});_x000D_
} // End if_x000D_
});_x000D_
});_x000D_
</script>
_x000D_
<style>_x000D_
#section1 {_x000D_
height: 600px;_x000D_
background-color: pink;_x000D_
}_x000D_
#section2 {_x000D_
height: 600px;_x000D_
background-color: yellow;_x000D_
}_x000D_
</style>
_x000D_
<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
</head>_x000D_
<body>_x000D_
<h1>Smooth Scroll</h1>_x000D_
<div class="main" id="section1">_x000D_
<h2>Section 1</h2>_x000D_
<p>Click on the link to see the "smooth" scrolling effect.</p>_x000D_
<a href="#section2">Click Me to Smooth Scroll to Section 2 Below</a>_x000D_
<p>Note: Remove the scroll-behavior property to remove smooth scrolling.</p>_x000D_
</div>_x000D_
<div class="main" id="section2">_x000D_
<h2>Section 2</h2>_x000D_
<a href="#section1">Click Me to Smooth Scroll to Section 1 Above</a>_x000D_
</div>_x000D_
</body>_x000D_
</html>
_x000D_
First, factor consists of indices and levels. This fact is very very important when you are struggling with factor.
For example,
> z <- factor(letters[c(3, 2, 3, 4)])
# human-friendly display, but internal structure is invisible
> z
[1] c b c d
Levels: b c d
# internal structure of factor
> unclass(z)
[1] 2 1 2 3
attr(,"levels")
[1] "b" "c" "d"
here, z
has 4 elements.
The index is 2, 1, 2, 3
in that order.
The level is associated with each index: 1 -> b, 2 -> c, 3 -> d.
Then, as.numeric
converts simply the index part of factor into numeric.
as.character
handles the index and levels, and generates character vector expressed by its level.
?as.numeric
says that Factors are handled by the default method.
Make sure the header files are publicly available as part of the framework's public headers.
Goto Framework -> Target -> Build Phases and drag to move the relevant header files from Project to Public. Hope that helps!
With Web API 2.2: Request.GetOwinContext().Request.RemoteIpAddress
With zsh
Assuming you don't care about present directories and you will not have more than 999 files (choose a bigger number if you want, or create a while loop).
[ 6 -le `ls *(.)|wc -l` ] && rm *(.om[6,999])
In *(.om[6,999])
, the .
means files, the o
means sort order up, the m
means by date of modification (put a
for access time or c
for inode change), the [6,999]
chooses a range of file, so doesn't rm the 5 first.
Yes you will have to escape all double quotes by a backslash.
Use this code, it is working perfectly. I have create a sql function that accept two parameters, the first param is the long string that we want to search into it,and it can accept string length up to 1500 character(of course you can extend it or even change it to text datatype). And the second parameter is the substring that we want to calculate the number of its occurance(its length is up to 200 character, of course you can change it to what your need). and the output is an integer, represent the number of frequency.....enjoy it.
CREATE FUNCTION [dbo].[GetSubstringCount]
(
@InputString nvarchar(1500),
@SubString NVARCHAR(200)
)
RETURNS int
AS
BEGIN
declare @K int , @StrLen int , @Count int , @SubStrLen int
set @SubStrLen = (select len(@SubString))
set @Count = 0
Set @k = 1
set @StrLen =(select len(@InputString))
While @K <= @StrLen
Begin
if ((select substring(@InputString, @K, @SubStrLen)) = @SubString)
begin
if ((select CHARINDEX(@SubString ,@InputString)) > 0)
begin
set @Count = @Count +1
end
end
Set @K=@k+1
end
return @Count
end
Here's a solution for if you don't want a solid-color background, i.e. just a border with square-cut corners.
.container {
width: 100px;
height: 100px;
background-color: white;
border: 1px solid black;
position: relative;
}
.border {
position: absolute;
width: 100%;
height: 100%;
}
.border:before {
content: '';
position: absolute;
border-top: 15px solid white;
border-left: 15px solid white;
width: 0;
}
.border:after {
content: '';
position: absolute;
width: 16px;
height: 1px;
background: black;
}
.tl:before { top: -5px; left: -5px; transform: rotate(-45deg); }
.tl:after { top: 5px; left: -3px; transform: rotate(-45deg);}
.tr:before { top: -5px; right: -5px; transform: rotate(45deg); }
.tr:after { top: 5px; right: -3px; transform: rotate(45deg); }
.bl:before { bottom: -5px; left: -5px; transform: rotate(45deg); }
.bl:after { bottom: 5px; left: -3px; transform: rotate(45deg); }
.br:before { bottom: -5px; right: -5px; transform: rotate(-45deg); }
.br:after { bottom: 5px; right: -3px; transform: rotate(-45deg); }
_x000D_
<html>
<body>
<div class="container">
<div class="border tl"></div>
<div class="border tr"></div>
<div class="border bl"></div>
<div class="border br"></div>
</div>
</body>
</html>
_x000D_
Although the above answers mostly get them right, there is one slight issue with them all.. Follow these steps and you are good to go
set variable name -> ANDROID_HOME
set variable value -> the custom location of the Android SDK
save all those by clicking ok If you are using the terminal(cmd) close it and open it again
I have an improvement on the answer @DewiMorgan gave for VS 2008 express. I have since confirmed it also works on VS 2005 express.
It lets you run the software without it EVER requiring registration, and also makes it so you don't have to manually delete the key every 30 days. It does this by preventing the key from ever being written.
(Deleting the correct key can also let you avoid registering VS 2015 "Community Edition," but using permissions to prevent the key being written will make the IDE crash, so I haven't found a great solution for it yet.)
The directions assume Visual C# Express 2008, but this works on all the other visual studio express apps I can find.
HKEY_CURRENT_USER\Software\Microsoft\VCSExpress\9.0\Registration
.Params
.
permissions
.Advanced...
permissions
tab, and uncheck the box labeled Inherit from parent the permission entries that apply to child objects. Include these with entries explicitly defined here.
copy
.copy
button was renamed to add
, as in add inherited permissions as explicit permissions
.On Win10, there is a button called "Disable Inheritance" that does the same thing as the checkbox mentioned in step 5. It is necessary to create new permissions just for
Registration
, instead of inheriting those permissions from an upstream registry key.
OK
in the 'Advanced' window.Back in the first permissions window, click your user, and uncheck Full Control
.
Do the same thing for the Administrators
group.
Hit OK
or Apply
.
Congratulations, you will never again be plagued by the registration nag, and just like WinRAR, your trial will never expire.
You may have to do the same thing for other (non-Visual C#) programs, like Visual Basic express or Visual C++ express.
It has been reported by @IronManMark20 in the comments that simply deleting the registry key works and that Visual Studio does not attempt to re-create the key. I am not sure if I believe this because when I installed VS on a clean windows installation, the key was not created until I ran VS at least once. But for what it's worth, that may be an option as well.
// Here is the simple code using COM object in PHP
class Excel_ReadWrite{
private $XLSHandle;
private $WrkBksHandle;
private $xlBook;
function __construct() {
$this->XLSHandle = new COM("excel.application") or die("ERROR: Unable to instantaniate COM!\r\n");
}
function __destruct(){
//if already existing file is opened
if($this->WrkBksHandle != null)
{
$this->WrkBksHandle->Close(True);
unset($this->WrkBksHandle);
$this->XLSHandle->Workbooks->Close();
}
//if created new xls file
if($this->xlBook != null)
{
$this->xlBook->Close(True);
unset($this->xlBook);
}
//Quit Excel Application
$this->XLSHandle->Quit();
unset($this->XLSHandle);
}
public function OpenFile($FilePath)
{
$this->WrkBksHandle = $this->XLSHandle->Workbooks->Open($FilePath);
}
public function ReadData($RowNo, $ClmNo)
{
$Value = $this->XLSHandle->ActiveSheet->Cells($RowNo, $ClmNo)->Value;
return $Value;
}
public function SaveOpenedFile()
{
$this->WrkBksHandle->Save();
}
/***********************************************************************************
* Function Name:- WriteToXlsFile() will write data based on row and column numbers
* @Param:- $CellData- cell data
* @Param:- $RowNumber- xlsx file row number
* @Param:- $ColumnNumber- xlsx file column numbers
************************************************************************************/
function WriteToXlsFile($CellData, $RowNumber, $ColumnNumber)
{
try{
$this->XLSHandle->ActiveSheet->Cells($RowNumber,$ColumnNumber)->Value = $CellData;
}
catch(Exception $e){
throw new Exception("Error:- Unable to write data to xlsx sheet");
}
}
/****************************************************************************************
* Function Name:- CreateXlsFileWithClmName() will initialize xls file with column Names
* @Param:- $XlsColumnNames- Array of columns data
* @Param:- $XlsColumnWidth- Array of columns width
*******************************************************************************************/
function CreateXlsFileWithClmNameAndWidth($WorkSheetName = "Raman", $XlsColumnNames = null, $XlsColumnWidth = null)
{
//Hide MS Excel application window
$this->XLSHandle->Visible = 0;
//Create new document
$this->xlBook = $this->XLSHandle->Workbooks->Add();
//Create Sheet 1
$this->xlBook->Worksheets(1)->Name = $WorkSheetName;
$this->xlBook->Worksheets(1)->Select;
if($XlsColumnWidth != null)
{
//$XlsColumnWidth = array("A1"=>15,"B1"=>20);
foreach($XlsColumnWidth as $Clm=>$Width)
{
//Set Columns Width
$this->XLSHandle->ActiveSheet->Range($Clm.":".$Clm)->ColumnWidth = $Width;
}
}
if($XlsColumnNames != null)
{
//$XlsColumnNames = array("FirstColumnName"=>1, "SecondColumnName"=>2);
foreach($XlsColumnNames as $ClmName=>$ClmNumber)
{
// Cells(Row,Column)
$this->XLSHandle->ActiveSheet->Cells(1,$ClmNumber)->Value = $ClmName;
$this->XLSHandle->ActiveSheet->Cells(1,$ClmNumber)->Font->Bold = True;
$this->XLSHandle->ActiveSheet->Cells(1,$ClmNumber)->Interior->ColorIndex = "15";
}
}
}
//56 is for xls 8
public function SaveCreatedFile($FileName, $FileFormat = 56)
{
$this->xlBook->SaveAs($FileName, $FileFormat);
}
public function MakeFileVisible()
{
//Hide MS Excel application window`enter code here`
$this->XLSHandle->Visible = 1;
}
}//end of EXCEL class
HTML
create div with id='dvFile'
;
create a button
;
onclick
of that button calling function add_more()
JavaScript
function add_more() {
var txt = "<br><input type=\"file\" name=\"item_file[]\">";
document.getElementById("dvFile").innerHTML += txt;
}
PHP
if(count($_FILES["item_file"]['name'])>0)
{
//check if any file uploaded
$GLOBALS['msg'] = ""; //initiate the global message
for($j=0; $j < count($_FILES["item_file"]['name']); $j++)
{ //loop the uploaded file array
$filen = $_FILES["item_file"]['name']["$j"]; //file name
$path = 'uploads/'.$filen; //generate the destination path
if(move_uploaded_file($_FILES["item_file"]['tmp_name']["$j"],$path))
{
//upload the file
$GLOBALS['msg'] .= "File# ".($j+1)." ($filen) uploaded successfully<br>";
//Success message
}
}
}
else {
$GLOBALS['msg'] = "No files found to upload"; //No file upload message
}
In this way you can add file/images, as many as required, and handle them through php script.
As far as i understand fr is the object of your FileReadExample class. So it is obvious it will not have any method like fr.readLine() if you dont create one yourself.
secondly, i think a correct constructor of the BufferedReader class will help you do your task.
String str;
BufferedReader buffread = new BufferedReader(new FileReader(new File("file.dat")));
str = buffread.readLine();
.
.
buffread.close();
this should help you.
Here's the workflow I use all the time, using the keyboard only
Note that this doesn't work if there are blank lines in the selection.
You can use the form
attribute id
to span a form over multiple elements each using the form
attribute with the name of the form as follows:
<table>
<tr>
<td>
<form method="POST" id="form-1" action="/submit/form-1"></form>
<input name="a" form="form-1">
</td>
<td><input name="b" form="form-1"></td>
<td><input name="c" form="form-1"></td>
<td><input type="submit" form="form-1"></td>
</tr>
</table>
You shouldn't rely on the order of elements by using prev
or next
. Just use the for
attribute of the label, as it should correspond to the ID of the element you're currently manipulating:
var label = $("label[for='" + $(this).attr('id') + "']");
However, there are some cases where the label will not have for
set, in which case the label will be the parent of its associated control. To find it in both cases, you can use a variation of the following:
var label = $('label[for="' + $(this).attr('id') + '"]');
if(label.length <= 0) {
var parentElem = $(this).parent(),
parentTagName = parentElem.get(0).tagName.toLowerCase();
if(parentTagName == "label") {
label = parentElem;
}
}
I hope this helps!
You should make car_id a primary key in cars.
You should use InfoPlist.strings
file to localize values of Info.plist
. To do this, go to File->New->File
, choose Strings File
under Resource
tab of iOS
, name it InfoPlist
, and create. Open and insert the Info.plist
values you want to localize like:
NSLocationWhenInUseUsageDescription = "Description of this";
Now you can localize InfoPlist.strings
file with translations.
Select the localization options, or enable localization if needed,
You should be able to see the file also on the left side editor.
Here is the official documentation for Info.plist
keys localization.
Credits to Marco, thanks for including the pics in this answer!
The object you're saving should have a correct Id
after propagating changes into database.
preparedStatement.setNull(index, java.sql.Types.NULL);
that should work for any type. Though in some cases failure happens on the server-side, like: for SQL:
COALESCE(?, CURRENT_TIMESTAMP)
Oracle 18XE
fails with the wrong type: expected DATE
, got STRING
-- that is a perfectly valid failure;
Bottom line: it is good to know the type if you call .setNull()
def anotherFunction(word):
for letter in word:
print("_", end=" ")
def oneFunction(lists):
category = random.choice(list(lists.keys()))
word = random.choice(lists[category])
return anotherFunction(word)
If you do not have too many folders then I suggest you use if statements to choose an upload folder depending on the user input details. E.g.
String user= request.getParameter("username");
if (user=="Alfred"){
//Path A;
}
if (user=="other"){
//Path B;
}
The watch function should place in Child component. Not parent.
You can simply implement the same using the application iResign.
Give path of 1).ipa
2) New provision profile
3) Entitlement file (Optional, add only if you have entitlement)
4) Bundle id
5) Distribution Certificate
You can see output .ipa file saved after re-sign
Simple and powerful tool
Quoting directly from the help page for factor
:
To transform a factor f to its original numeric values, as.numeric(levels(f))[f]
is recommended and slightly more efficient than as.numeric(as.character(f))
.
From the spring specs, there are five types of bean scopes supported :
1. singleton(default*)
Scopes a single bean definition to a single object instance per Spring IoC container.
2. prototype
Scopes a single bean definition to any number of object instances.
3. request
Scopes a single bean definition to the lifecycle of a single HTTP request; that is each and every HTTP request will have its own instance of a bean created off the back of a single bean definition. Only valid in the context of a web-aware Spring ApplicationContext.
4. session
Scopes a single bean definition to the lifecycle of a HTTP Session. Only valid in the context of a web-aware Spring ApplicationContext.
5. global session
Scopes a single bean definition to the lifecycle of a global HTTP Session. Typically only valid when used in a portlet context. Only valid in the context of a web-aware Spring ApplicationContext.
*default means when no scope is explicitly provided in the <bean />
tag.
read more about them here: http://static.springsource.org/spring/docs/3.0.0.M3/reference/html/ch04s04.html
Use the defaultDate option
$( ".selector" ).datepicker({ defaultDate: '01/01/01' });
If you change your date format, make sure to change the input into defaultDate (e.g. '01-01-2001')
Your error is also shown when trying to access the sizeof()
of an non-initialized extern array:
extern int a[];
sizeof(a);
>> error: invalid application of 'sizeof' to incomplete type 'int[]'
Note that you would get an array size missing
error without the extern
keyword.
from decimal import Decimal
def round_float(v, ndigits=2, rt_str=False):
d = Decimal(v)
v_str = ("{0:.%sf}" % ndigits).format(round(d, ndigits))
if rt_str:
return v_str
return Decimal(v_str)
Results:
Python 3.6.1 (default, Dec 11 2018, 17:41:10)
>>> round_float(3.1415926)
Decimal('3.14')
>>> round_float(3.1445926)
Decimal('3.14')
>>> round_float(3.1455926)
Decimal('3.15')
>>> round_float(3.1455926, rt_str=True)
'3.15'
>>> str(round_float(3.1455926))
'3.15'
We can use the PHP cURL library to generate simple HTTP POST request. The following example shows you how to create a simple SOAP request using cURL.
Create the soap-server.php which write the SOAP request into soap-request.xml in web folder.
We can use the PHP cURL library to generate simple HTTP POST request. The following example shows you how to create a simple SOAP request using cURL.
Create the soap-server.php which write the SOAP request into soap-request.xml in web folder.
<?php
$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ? $HTTP_RAW_POST_DATA : '';
$f = fopen("./soap-request.xml", "w");
fwrite($f, $HTTP_RAW_POST_DATA);
fclose($f);
?>
The next step is creating the soap-client.php which generate the SOAP request using the cURL library and send it to the soap-server.php URL.
<?php
$soap_request = "<?xml version=\"1.0\"?>\n";
$soap_request .= "<soap:Envelope xmlns:soap=\"http://www.w3.org/2001/12/soap-envelope\" soap:encodingStyle=\"http://www.w3.org/2001/12/soap-encoding\">\n";
$soap_request .= " <soap:Body xmlns:m=\"http://www.example.org/stock\">\n";
$soap_request .= " <m:GetStockPrice>\n";
$soap_request .= " <m:StockName>IBM</m:StockName>\n";
$soap_request .= " </m:GetStockPrice>\n";
$soap_request .= " </soap:Body>\n";
$soap_request .= "</soap:Envelope>";
$header = array(
"Content-type: text/xml;charset=\"utf-8\"",
"Accept: text/xml",
"Cache-Control: no-cache",
"Pragma: no-cache",
"SOAPAction: \"run\"",
"Content-length: ".strlen($soap_request),
);
$soap_do = curl_init();
curl_setopt($soap_do, CURLOPT_URL, "http://localhost/php-soap-curl/soap-server.php" );
curl_setopt($soap_do, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($soap_do, CURLOPT_TIMEOUT, 10);
curl_setopt($soap_do, CURLOPT_RETURNTRANSFER, true );
curl_setopt($soap_do, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($soap_do, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($soap_do, CURLOPT_POST, true );
curl_setopt($soap_do, CURLOPT_POSTFIELDS, $soap_request);
curl_setopt($soap_do, CURLOPT_HTTPHEADER, $header);
if(curl_exec($soap_do) === false) {
$err = 'Curl error: ' . curl_error($soap_do);
curl_close($soap_do);
print $err;
} else {
curl_close($soap_do);
print 'Operation completed without any errors';
}
?>
Enter the soap-client.php URL in browser to send the SOAP message. If success, Operation completed without any errors will be shown and the soap-request.xml will be created.
<?xml version="1.0"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2001/12/soap-envelope" soap:encodingStyle="http://www.w3.org/2001/12/soap-encoding">
<soap:Body xmlns:m="http://www.example.org/stock">
<m:GetStockPrice>
<m:StockName>IBM</m:StockName>
</m:GetStockPrice>
</soap:Body>
</soap:Envelope>
Original - http://eureka.ykyuen.info/2011/05/05/php-send-a-soap-request-by-curl/
sudo dscl . -append /Groups/wheel wheel $(whoami)
chmod -R 775 ${this_is_your_python_package_path}
pip3 install requests
and got:File "/usr/local/python3/lib/python3.6/os.py", line 220, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied:
'/usr/local/python3/lib/python3.6/site-packages/requests'
cd /usr/local/python3/lib/python3.6/site-packages
,
then ls -al
and got:drwxr-xr-x 6 root wheel 192B 2 27 18:06 requests/
when i saw this, i understood, makedirs is an action of write,
but the requests mode drwxrwxr-x
displaied only user root
can write the requests file.
If add yutou(whoami
) to the group wheel, and modify the package
to the group wheel can write, then i can write, and the problem solved.
How to add yutou to group wheel?
+ detect group wheel, sudo dscl . -list /groups GroupMembership
, you will find:
wheel root
the group wheel only one member root.
+ add yutou to group wheel, sudo dscl . -append /Groups/wheel wheel yutou
.
+ check, sudo dscl . -list /groups GroupMembership
:
wheel root yutou
modify the python package mode
chmod -R 775 /usr/local/python3/lib/python3.6
conda create -n tensorflow_gpuenv tensorflow-gpu
Or
type the command pip install c:.*.whl in command prompt (cmd).
put public, protected or private before the $connection.
What about the css opacity
attribute? 0
to 1
values.
But then you probably need to use a more explicit dom element than "font". For instance:
<html><body><span style=\"opacity: 0.5;\"><font color=\"black\" face=\"arial\" size=\"4\">THIS IS MY TEXT</font></span></body></html>
As an additional information I would of course suggest you use CSS declarations outside of your html elements, but as well try to use the font css style instead of the font html tag.
For cross browser css3 styles generator, have a look at http://css3please.com/
Globals in connection with multiprocessing on different platforms/envrionments as Windows/Mac OS on the one side and Linux on the other are troublesome.
I will show you this with a simple example pointing out a problem which I run into some time ago.
If you want to understand, why things are different on Windows/MacOs and Linux you need to know that, the default mechanism to start a new process on ...
They are different in Memory allocation an initialisation ... (but I don't go into this here).
Let's have a look at the problem/example ...
import multiprocessing
counter = 0
def do(task_id):
global counter
counter +=1
print(f'task {task_id}: counter = {counter}')
if __name__ == '__main__':
pool = multiprocessing.Pool(processes=4)
task_ids = list(range(4))
pool.map(do, task_ids)
If you run this on Windows (And I suppose on MacOS too), you get the following output ...
task 0: counter = 1
task 1: counter = 2
task 2: counter = 3
task 3: counter = 4
If you run this on Linux, you get the following instead.
task 0: counter = 1
task 1: counter = 1
task 2: counter = 1
task 3: counter = 1
On this page, the Arduino sketch defines a couple of Structs (plus a couple of methods) which are then called in the setup loop and main loop. Simple enough to interpret, even for a barely-literate programmer like me.
For Windows 10 it is:
Control Panel > User Accounts > Manage your Credentials > Windows Credentials, search for the git credentials and edit
Take three ingredients:
The reflect
package to loop over all the fields of a struct.
An if
statement to pick up the fields you want to Marshal
, and
The encoding/json
package to Marshal
the fields of your liking.
Preparation:
Blend them in a good proportion. Use reflect.TypeOf(your_struct).Field(i).Name()
to get a name of the i
th field of your_struct
.
Use reflect.ValueOf(your_struct).Field(i)
to get a type Value
representation of an i
th field of your_struct
.
Use fieldValue.Interface()
to retrieve the actual value (upcasted to type interface{}) of the fieldValue
of type Value
(note the bracket use - the Interface() method produces interface{}
If you luckily manage not to burn any transistors or circuit-breakers in the process you should get something like this:
func MarshalOnlyFields(structa interface{},
includeFields map[string]bool) (jsona []byte, status error) {
value := reflect.ValueOf(structa)
typa := reflect.TypeOf(structa)
size := value.NumField()
jsona = append(jsona, '{')
for i := 0; i < size; i++ {
structValue := value.Field(i)
var fieldName string = typa.Field(i).Name
if marshalledField, marshalStatus := json.Marshal((structValue).Interface()); marshalStatus != nil {
return []byte{}, marshalStatus
} else {
if includeFields[fieldName] {
jsona = append(jsona, '"')
jsona = append(jsona, []byte(fieldName)...)
jsona = append(jsona, '"')
jsona = append(jsona, ':')
jsona = append(jsona, (marshalledField)...)
if i+1 != len(includeFields) {
jsona = append(jsona, ',')
}
}
}
}
jsona = append(jsona, '}')
return
}
Serving:
serve with an arbitrary struct and a map[string]bool
of fields you want to include, for example
type magic struct {
Magic1 int
Magic2 string
Magic3 [2]int
}
func main() {
var magic = magic{0, "tusia", [2]int{0, 1}}
if json, status := MarshalOnlyFields(magic, map[string]bool{"Magic1": true}); status != nil {
println("error")
} else {
fmt.Println(string(json))
}
}
Bon Appetit!
Sometimes SUM_IF can get the job done.
Suppose you have a sheet of product information, including unique productID
in column A and unit price in column P. And a sheet of purchase order entries with product IDs in column A, and you want column T to calculate the unit price for the entry.
The following formula will do the trick in cell Entries!T2 and can be copied to the other cells in the same column.
=SUMIF(Products!$A$2:$A$9999,Entries!$A2, Products!$P$2:$9999)
Then you could have another column with number of items per entry and multiply it with the unit price to get total cost for the entry.
Inline elements:
Block elements:
Inline-block elements:
From W3Schools:
An inline element has no line break before or after it, and it tolerates HTML elements next to it.
A block element has some whitespace above and below it and does not tolerate any HTML elements next to it.
An inline-block element is placed as an inline element (on the same line as adjacent content), but it behaves as a block element.
When you visualize this, it looks like this:
The image is taken from this page, which also talks some more about this subject.
new java.util.Timer().schedule(
new java.util.TimerTask() {
@Override
public void run() {
// your code here
}
},
5000
);
EDIT:
javadoc says:
After the last live reference to a Timer object goes away and all outstanding tasks have completed execution, the timer's task execution thread terminates gracefully (and becomes subject to garbage collection). However, this can take arbitrarily long to occur.
I'm too late to the party but thought this might help someone.
This is not exactly an answer, rather sharing my findings, and hopefully getting some critical argument for/against it, as specifically I am not aware how efficient it is.
I recently had a need to do this for my project. I did this using Object.assign
, more precisely it is done something like this:Object.assign(new Person(...), anObjectLikePerson)
.
Here is link to my JSFiddle, and also the main part of the code:
function Person(firstName, lastName) {
this.firstName = firstName;
this.lastName = lastName;
this.getFullName = function() {
return this.lastName + ' ' + this.firstName;
}
}
var persons = [{
lastName: "Freeman",
firstName: "Gordon"
}, {
lastName: "Smith",
firstName: "John"
}];
var stronglyTypedPersons = [];
for (var i = 0; i < persons.length; i++) {
stronglyTypedPersons.push(Object.assign(new Person("", ""), persons[i]));
}
You can do this by using a content provider. Each data item used in the application remains private to the application. If an application want to share data accross applications, there is only technique to achieve this, using a content provider, which provides interface to access that private data.
OK, You can simply do:
git tag -a <tag> <commit-hash>
So if you want to add tag: 1.0.2 to commit e50f795
, just simply do:
git tag -a 1.0.2 e50f795
Also you add a message at the end, using -m
, something like this:
git tag -a 1.0.2 e50f795 -m "my message"
After all, you need to push it to the remote
, to do that, simply do:
git push origin 1.0.2
If you have many tags which you don't want to mention them one by one, just simply do:
git push origin --tags
to push all tags together...
Also, I created the steps in the image below, for more clarification of the steps:
You can also dd the tag in Hub or using tools like SourceTree, to avoid the previous steps, I logged-in to my Bitbucket in this case and doing it from there:
No tags
and click on the +
icon:This XML file does not appear to have any style information associated with it. The document tree is shown below.
You will get this error in the client side when the client (the webbrowser) for some reason interprets the HTTP response content as text/xml
instead of text/html
and the parsed XML tree doesn't have any XML-stylesheet. In other words, the webbrowser incorrectly parsed the retrieved HTTP response content as XML instead of as HTML due to the wrong or missing HTTP response content type.
In case of JSF/Facelets files which have the default extension of .xhtml
, that can in turn happen if the HTTP request hasn't invoked the FacesServlet
and thus it wasn't able to parse the Facelets file and generate the desired HTML output based on the XHTML source code. Firefox is then merely guessing the HTTP response content type based on the .xhtml
file extension which is in your Firefox configuration apparently by default interpreted as text/xml
.
You need to make sure that the HTTP request URL, as you see in browser's address bar, matches the <url-pattern>
of the FacesServlet
as registered in webapp's web.xml
, so that it will be invoked and be able to generate the desired HTML output based on the XHTML source code. If it's for example *.jsf
, then you need to open the page by /some.jsf
instead of /some.xhtml
. Alternatively, you can also just change the <url-pattern>
to *.xhtml
. This way you never need to fiddle with virtual URLs.
Note thus that you don't actually need a XML stylesheet. This all was just misinterpretation by the webbrowser while trying to do its best to make something presentable out of the retrieved HTTP response content. It should actually have retrieved the properly generated HTML output, Firefox surely knows precisely how to deal with HTML content.
For Meteor developers.
Open a second terminal window while running your app in localhost:3000
.
In your project's folder run, meteor mongo
.
coolName = new Mongo.Collection('yourCollectionName');
Then simply enter db.yourCollectionName.drop();
You'll automatically see the changes in your local server.
For everybody else.
db.yourCollectionName.drop();
Thanks, I used @str8up7od answer to create a function today which also checks if the input is empty:
function is_number(input) {
if(input === '')
return false;
let regex = new RegExp(/[^0-9]/, 'g');
return (input.match(regex) === null);
}
I know this is an old question, but for PHP <5.3 you could try this:
$date = '05/07/2013';
$add_days = 7;
$date = date('Y-m-d',strtotime($date) + (24*3600*$add_days)); //my preferred method
//or
$date = date('Y-m-d',strtotime($date.' +'.$add_days.' days');
those icons are a way of Egit to show you status of the current file/folder in git. You might want to check this out:
Procedural Content Generation wiki:
if what you want isn't on there, then add it ;)
Add an auto incrementing Primary Key to each record, for example, UserStatusId.
Then your query could look like this:
select * from UserStatus where UserStatusId in
(
select max(UserStatusId) from UserStatus group by User
)
Date User Status Notes
As +Volatility and yourself pointed out, sets are unordered. If you need the elements to be in order, just call sorted
on the set:
>>> y = [1, 1, 6, 6, 6, 6, 6, 8, 8]
>>> sorted(set(y))
[1, 6, 8]
For performance purpose, here's a little code to benchmark these two alternatives:
#!/bin/python
def hexxorA(a, b):
if len(a) > len(b):
return "".join(["%x" % (int(x,16) ^ int(y,16)) for (x, y) in zip(a[:len(b)], b)])
else:
return "".join(["%x" % (int(x,16) ^ int(y,16)) for (x, y) in zip(a, b[:len(a)])])
def hexxorB(a, b):
if len(a) > len(b):
return '%x' % (int(a[:len(b)],16)^int(b,16))
else:
return '%x' % (int(a,16)^int(b[:len(a)],16))
def testA():
strstr = hexxorA("b4affa21cbb744fa9d6e055a09b562b87205fe73cd502ee5b8677fcd17ad19fce0e0bba05b1315e03575fe2a783556063f07dcd0b9d15188cee8dd99660ee751", "5450ce618aae4547cadc4e42e7ed99438b2628ff15d47b20c5e968f086087d49ec04d6a1b175701a5e3f80c8831e6c627077f290c723f585af02e4c16122b7e2")
if not int(strstr, 16) == int("e0ff3440411901bd57b24b18ee58fbfbf923d68cd88455c57d8e173d91a564b50ce46d01ea6665fa6b4a7ee2fb2b3a644f702e407ef2a40d61ea3958072c50b3", 16):
raise KeyError
return strstr
def testB():
strstr = hexxorB("b4affa21cbb744fa9d6e055a09b562b87205fe73cd502ee5b8677fcd17ad19fce0e0bba05b1315e03575fe2a783556063f07dcd0b9d15188cee8dd99660ee751", "5450ce618aae4547cadc4e42e7ed99438b2628ff15d47b20c5e968f086087d49ec04d6a1b175701a5e3f80c8831e6c627077f290c723f585af02e4c16122b7e2")
if not int(strstr, 16) == int("e0ff3440411901bd57b24b18ee58fbfbf923d68cd88455c57d8e173d91a564b50ce46d01ea6665fa6b4a7ee2fb2b3a644f702e407ef2a40d61ea3958072c50b3", 16):
raise KeyError
return strstr
if __name__ == '__main__':
import timeit
print("Time-it 100k iterations :")
print("\thexxorA: ", end='')
print(timeit.timeit("testA()", setup="from __main__ import testA", number=100000), end='s\n')
print("\thexxorB: ", end='')
print(timeit.timeit("testB()", setup="from __main__ import testB", number=100000), end='s\n')
Here are the results :
Time-it 100k iterations :
hexxorA: 8.139988073991844s
hexxorB: 0.240523161992314s
Seems like '%x' % (int(a,16)^int(b,16))
is faster then the zip version.
I have the same issue, when I close the chrome window popup browser inspector its working fine for me.
If you want to set 777 permission to your created file than you can use the following method:
public void setPermission(File file) throws IOException{
Set<PosixFilePermission> perms = new HashSet<>();
perms.add(PosixFilePermission.OWNER_READ);
perms.add(PosixFilePermission.OWNER_WRITE);
perms.add(PosixFilePermission.OWNER_EXECUTE);
perms.add(PosixFilePermission.OTHERS_READ);
perms.add(PosixFilePermission.OTHERS_WRITE);
perms.add(PosixFilePermission.OTHERS_EXECUTE);
perms.add(PosixFilePermission.GROUP_READ);
perms.add(PosixFilePermission.GROUP_WRITE);
perms.add(PosixFilePermission.GROUP_EXECUTE);
Files.setPosixFilePermissions(file.toPath(), perms);
}
A possibility is to declare the variable at the index.html because it is really global. It can be done adding a javascript method to return the value of the variable, and it will be READ ONLY.
An example of this solution can be found at this answer: https://stackoverflow.com/a/62485644/1178478
To format the code in Visual Studio when you want, press: (Ctrl + K) & (Ctrl + F)
The auto formatting rules can be found and changed in: Tools/Options --> (Left sidebar): Text Editor / CSS (or whatever other language you want to change)
For the CSS language the options are unfortunately very limited. You can also make some changes in: .../ Text Editor / All Languages
Simple solution:
<iframe onload="this.style.height=this.contentWindow.document.body.scrollHeight + 'px';" ...></iframe>
This works when the iframe and parent window are in the same domain. It does not work when the two are in different domains.
Another option that worked for me was to add onsubmit="return false;" to the form tag.
<form onsubmit="return false;">
Semantically probably not as good a solution as the above methods of changing the button type, but seems to be an option if you just want a form element the won't submit.
You should also be able to accomplish a similar thing using the premain method of a Java agent.
The manifest of the agent JAR file must contain the attribute Premain-Class. The value of this attribute is the name of the agent class. The agent class must implement a public static premain method similar in principle to the main application entry point. After the Java Virtual Machine (JVM) has initialized, each premain method will be called in the order the agents were specified, then the real application main method will be called. Each premain method must return in order for the startup sequence to proceed.
You can do This.
final List<String> fruits_list = new ArrayList<String>(Arrays.asList(fruits));
// Create an ArrayAdapter from List
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>
(this, android.R.layout.simple_list_item_1, fruits_list){
@Override
public View getView(int position, View convertView, ViewGroup parent){
// Get the current item from ListView
View view = super.getView(position,convertView,parent);
if(position %2 == 1)
{
// Set a background color for ListView regular row/item
view.setBackgroundColor(Color.parseColor("#FFB6B546"));
}
else
{
// Set the background color for alternate row/item
view.setBackgroundColor(Color.parseColor("#FFCCCB4C"));
}
return view;
}
};
// DataBind ListView with items from ArrayAdapter
lv.setAdapter(arrayAdapter);
}
}
[a-zA-Z0-9~@#\^\$&\*\(\)-_\+=\[\]\{\}\|\\,\.\?\s]*
This would do the matching, if you only want to allow that just wrap it in ^$ or any other delimiters that you see appropriate, if you do this no specific disallow logic is needed.
Try
//book[title/@lang = 'it']
This reads:
book
elements
title
lang
"it"
You may find this helpful — it's an article entitled "XPath in Five Paragraphs" by Ronald Bourret.
But in all honesty, //book[title[@lang='it']]
and the above should be equivalent, unless your XPath engine has "issues." So it could be something in the code or sample XML that you're not showing us -- for example, your sample is an XML fragment. Could it be that the root element has a namespace, and you aren't counting for that in your query? And you only told us that it didn't work, but you didn't tell us what results you did get.
There are many ways to achieve this but the easiest way in Python 3.6+, in my opinion, is this:
print(f"{1:03}")
I now found solution by using mysqli
instead of mysql
.
<?php
// enable error reporting
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
//connect to database
$connection = mysqli_connect("hostname", "user", "password", "db", "port");
//run the store proc
$result = mysqli_query($connection, "CALL StoreProcName");
//loop the result set
while ($row = mysqli_fetch_array($result)){
echo $row[0] . " - " . + $row[1];
}
I found that many people seem to have a problem with using mysql_connect, mysql_query and mysql_fetch_array
.
To use base_url()
(shorthand), you have to load the URL Helper
first
$this->load->helper('url');
Or you can autoload it by changing application/config/autoload.php
Or just use
$this->config->base_url();
Same applies to site_url()
.
Also I can see you are missing echo
(though its not your current problem), use the code below to solve the problem
<link rel="stylesheet" href="<?php echo base_url(); ?>css/default.css" type="text/css" />
DROP TABLE TEST; -- COMMENT THIS OUT FOR THE FIRST RUN
CREATE TABLE TEST
(
COL_NAME,
TEST_NAME
) AS
(
SELECT NULL, 'ACTUAL NULL' FROM DUAL
UNION ALL
SELECT '', 'NULL STRING' FROM DUAL
UNION ALL
SELECT ' ', 'SINGLE SPACE' FROM DUAL
UNION ALL
SELECT ' ', 'DOUBLE SPACE' FROM DUAL
UNION ALL
SELECT ' ', 'TEN SPACES' FROM DUAL
UNION ALL
SELECT 'NONSPACE', 'NONSPACES' FROM DUAL
)
;
SELECT LENGTH(COL_NAME) NUM_OF_SPACES, TEST_NAME
FROM TEST
WHERE LENGTH(COL_NAME) > 0 -- THERE IS SOMETHING IN THE FIELD
AND TRIM(COL_NAME) IS NULL; -- WHICH EQUATES TO NULL
table TEST dropped.
table TEST created.
NUM_OF_SPACES TEST_NAME
1 SINGLE SPACE 2 DOUBLE SPACE 10 TEN SPACES
Once you have identified the columns that contain blanks, wrap that query in a count. If you actually need to identify the fields for some kind of update, consider selecting the ROWID as well.
#include <iostream>
#include <sstream>
#include <iterator>
#include <string>
using namespace std;
template <size_t N>
void splitString(string (&arr)[N], string str)
{
int n = 0;
istringstream iss(str);
for (auto it = istream_iterator<string>(iss); it != istream_iterator<string>() && n < N; ++it, ++n)
arr[n] = *it;
}
int main()
{
string line = "test one two three.";
string arr[4];
splitString(arr, line);
for (int i = 0; i < 4; i++)
cout << arr[i] << endl;
}
In windows with anaconda, just go on conda prompt and use this command
conda install --channel https://conda.anaconda.org/conda-forge keras
Very weird, but I got this error when I made a typo in the my.cnf
file.
So it had nothing to do with the user
directive not defined or not running as root
-user.
My mistake was:
bind=192.168.1.2
instead of
bind-address=192.168.1.2
The disabled attribute's standard behavior only happens for form elements. Try unbinding the event:
$("span").unbind("click");
if (typeof jQuery != 'undefined') {
// jQuery is loaded => print the version
alert(jQuery.fn.jquery);
}
Is it in your PATH? If so just run which git
in the terminal and it will tell you.
If you do not have access to the TestRunner
type information in the calling assembly (it sounds like you may not), you can call the method like this:
Assembly assembly = Assembly.LoadFile(@"C:\dyn.dll");
Type type = assembly.GetType("TestRunner");
var obj = Activator.CreateInstance(type);
// Alternately you could get the MethodInfo for the TestRunner.Run method
type.InvokeMember("Run",
BindingFlags.Default | BindingFlags.InvokeMethod,
null,
obj,
null);
If you have access to the IRunnable
interface type, you can cast your instance to that (rather than the TestRunner
type, which is implemented in the dynamically created or loaded assembly, right?):
Assembly assembly = Assembly.LoadFile(@"C:\dyn.dll");
Type type = assembly.GetType("TestRunner");
IRunnable runnable = Activator.CreateInstance(type) as IRunnable;
if (runnable == null) throw new Exception("broke");
runnable.Run();
Add a service to the Angular 4 app using Angular CLI
An Angular 2 service is simply a javascript function along with it's associated properties and methods, that can be included (via dependency injection) into Angular 2 components.
To add a new Angular 4 service to the app, use the command ng g service serviceName
. On creation of the service, the Angular CLI shows an error:
To solve this, we need to provide the service reference to the src\app\app.module.ts
inside providers
input of @NgModule
method.
Initially, the default code in the service is:
import { Injectable } from '@angular/core';
@Injectable()
export class ServiceNameService {
constructor() { }
}
A service has to have a few public methods.
You want to do more than just getState
. You want to react to changes in the store.
If you aren't using react-redux, you can do this:
function rerender() {
const state = store.getState();
render(
<div>
{ state.items.map((item) => <p> {item.title} </p> )}
</div>,
document.getElementById('app')
);
}
// subscribe to store
store.subscribe(rerender);
// do initial render
rerender();
// dispatch more actions and view will update
But better is to use react-redux. In this case you use the Provider like you mentioned, but then use connect to connect your component to the store.
Add the DLL as an existing item to one of the projects and it should be sorted
It means your Java runtime version is 1.8, but your compiler version (javac) is 1.6. To simply solve it, just retreat the Java version from 1.8 to 1.6.
But if you don't want to change the Java runtime version, then do the following steps:
This is now a multiple-year old question, but being very popular, it's worth mentioning a fantastic resource for learning about the C++11 memory model. I see no point in summing up his talk in order to make this yet another full answer, but given this is the guy who actually wrote the standard, I think it's well worth watching the talk.
Herb Sutter has a three hour long talk about the C++11 memory model titled "atomic<> Weapons", available on the Channel9 site - part 1 and part 2. The talk is pretty technical, and covers the following topics:
The talk doesn't elaborate on the API, but rather on the reasoning, background, under the hood and behind the scenes (did you know relaxed semantics were added to the standard only because POWER and ARM do not support synchronized load efficiently?).
It would most likely process them sequentially (why not just test it). But you can also do this:
make a file called curlrequests.sh
put it in a file like thus:
curl http://example.com/?update_=1
curl http://example.com/?update_=3
curl http://example.com/?update_=234
curl http://example.com/?update_=65
save the file and make it executable with chmod
:
chmod +x curlrequests.sh
run your file:
./curlrequests.sh
or
/path/to/file/curlrequests.sh
As a side note, you can chain requests with &&
, like this:
curl http://example.com/?update_=1 && curl http://example.com/?update_=2 && curl http://example.com?update_=3`
And execute in parallel using &
:
curl http://example.com/?update_=1 & curl http://example.com/?update_=2 & curl http://example.com/?update_=3
Since IPv4 addresses are 4 byte long, you could use an INT
(UNSIGNED
) that has exactly 4 bytes:
`ipv4` INT UNSIGNED
And INET_ATON
and INET_NTOA
to convert them:
INSERT INTO `table` (`ipv4`) VALUES (INET_ATON("127.0.0.1"));
SELECT INET_NTOA(`ipv4`) FROM `table`;
For IPv6 addresses you could use a BINARY
instead:
`ipv6` BINARY(16)
And use PHP’s inet_pton
and inet_ntop
for conversion:
'INSERT INTO `table` (`ipv6`) VALUES ("'.mysqli_real_escape_string(inet_pton('2001:4860:a005::68')).'")'
'SELECT `ipv6` FROM `table`'
$ipv6 = inet_pton($row['ipv6']);
$(this).find("select").each(function () {
$(this).find('option:selected').text();
});
select to_char(sysdate, 'DD-fmMONTH-YYYY') "Date" from Dual;
The above query result will be as given below.
01-APRIL-2019
Full answer to give you jquery and bootstrap since jquery is a requirement for bootstrap.js:
Install jquery and bootstrap into node_modules:
npm install bootstrap
npm install jquery
Import in your components using this exact filepath:
import 'jquery/src/jquery'; //for bootstrap.min.js
//bootstrap-theme file for bootstrap 3 only
import 'bootstrap/dist/css/bootstrap-theme.min.css';
import 'bootstrap/dist/css/bootstrap.min.css';
import 'bootstrap/dist/js/bootstrap.min.js';
To set it programmatically in Activity.java:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTheme(R.style.MyTheme); // (for Custom theme)
setTheme(android.R.style.Theme_Holo); // (for Android Built In Theme)
this.setContentView(R.layout.myactivity);
To set in Application scope in Manifest.xml (all activities):
<application
android:theme="@android:style/Theme.Holo"
android:theme="@style/MyTheme">
To set in Activity scope in Manifest.xml (single activity):
<activity
android:theme="@android:style/Theme.Holo"
android:theme="@style/MyTheme">
To build a custom theme, you will have to declare theme in themes.xml file, and set styles in styles.xml file.
I can think of two things:
First, try loading the image with:
string strUri2 = String.Format(@"pack://application:,,,/MyAseemby;component/resources/main titles/{0}", CurrenSelection.TitleImage);
imgTitle.Source = new BitmapImage(new Uri(strUri2));
Maybe the problem is with WinForm's image resizing, if the image is stretched set Stretch on the image control to "Uniform" or "UnfirofmToFill".
Second option is that maybe the image is not aligned to the pixel grid, you can read about it on my blog at http://www.nbdtech.com/blog/archive/2008/11/20/blurred-images-in-wpf.aspx
The correct way will be to use multipart POST method. See here for example code for the client.
For PHP there are many tutorials available. This is the first I've found. I recommend that you test the PHP code first using an html client and then try the java client.
you can use process class it's very easy. use this namespace
using System.Diagnostics;
if you want to make a button to get active window.
private void button1_Click(object sender, EventArgs e)
{
Process currentp = Process.GetCurrentProcess();
TextBox1.Text = currentp.MainWindowTitle; //this textbox will be filled with active window.
}
Use the following command:
in.nextLine();
right after
System.out.println("Invalid input. Please Try Again.");
System.out.println();
or after the following curly bracket (where your comment regarding it, is).
This command advances the scanner to the next line (when reading from a file or string, this simply reads the next line), thus essentially flushing it, in this case. It clears the buffer and readies the scanner for a new input. It can, preferably, be used for clearing the current buffer when a user has entered an invalid input (such as a letter when asked for a number).
Documentation of the method can be found here: http://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html#nextLine()
Hope this helps!
map :
is a higher-order method that takes a function as input and applies it to each element in the source RDD.
flatMap:
a higher-order method and transformation operation that takes an input function.
As Diodeus stated, IE doesn't allow anything but the default border for <select>
elements. However, I know of two hacks to achieve a similar effect :
Use a DIV that is placed absolutely at the same position as the dropdown and set it's borders. It will appear that the dropdown has a border.
Use a Javascript solution, for instance, the one provided here.
It may however prove to be too much effort, so you should evaluate if you really require the border.
You need to use Regular Expression For Website URL it is
var urlPattern = /(http|ftp|https)://[\w-]+(.[\w-]+)+([\w.,@?^=%&:/~+#-]*[\w@?^=%&/~+#-])?/
Use this Expression as in example
var regex = new RegExp(urlPattern ); var t = 'www.google.com';
var res = t.match(regex /g);
For You have to pass your web page as string to this javascript in variable t and get array
The following command runs the test on a single method:
phpunit --filter testSaveAndDrop EscalationGroupTest escalation/EscalationGroupTest.php
phpunit --filter methodName ClassName path/to/file.php
For newer versions of phpunit, it is just:
phpunit --filter methodName path/to/file.php
Ideally, a hashtable is O(1)
. The problem is if two keys are not equal, however they result in the same hash.
For example, imagine the strings "it was the best of times it was the worst of times" and "Green Eggs and Ham" both resulted in a hash value of 123
.
When the first string is inserted, it's put in bucket 123. When the second string is inserted, it would see that a value already exists for bucket 123
. It would then compare the new value to the existing value, and see they are not equal. In this case, an array or linked list is created for that key. At this point, retrieving this value becomes O(n)
as the hashtable needs to iterate through each value in that bucket to find the desired one.
For this reason, when using a hash table, it's important to use a key with a really good hash function that's both fast and doesn't often result in duplicate values for different objects.
Make sense?
As DACW pointed out, there are method-chaining improvements in pandas 0.18.1 that do what you are looking for very nicely.
Rather than using .where
, you can pass your function to either the .loc
indexer or the Series indexer []
and avoid the call to .dropna
:
test = pd.Series({
383: 3.000000,
663: 1.000000,
726: 1.000000,
737: 9.000000,
833: 8.166667
})
test.loc[lambda x : x!=1]
test[lambda x: x!=1]
Similar behavior is supported on the DataFrame and NDFrame classes.
Here is a simple but efficient version of code:
def get_all_subclasses(cls):
subclass_list = []
def recurse(klass):
for subclass in klass.__subclasses__():
subclass_list.append(subclass)
recurse(subclass)
recurse(cls)
return set(subclass_list)
Its time complexity is O(n)
where n
is the number of all subclasses if there's no multiple inheritance.
It's more efficient than the functions that recursively create lists or yield classes with generators, whose complexity could be (1) O(nlogn)
when the class hierarchy is a balanced tree or (2) O(n^2)
when the class hierarchy is a biased tree.
With this command I had poor image quality
ffmpeg -i rtsp://192.168.XXX.XXX:554/live.sdp -vcodec copy -acodec copy -f mp4 -y MyVideoFFmpeg.mp4
With this, almost without delay, I got good image quality.
ffmpeg -i rtsp://192.168.XXX.XXX:554/live.sdp -b 900k -vcodec copy -r 60 -y MyVdeoFFmpeg.avi
You are not passing the array as copy. It is only a pointer pointing to the address where the first element of the array is in memory.
Using CSS you can just set display:none for the element in a CSS file or in a style attribute
#div { display:none; }
<div id="div"></div>
<div style="display:none"></div>
or having the js just after the div might be fast enough too, but not as clean
A rect
can't contain a text
element. Instead transform a g
element with the location of text and rectangle, then append both the rectangle and the text to it:
var bar = chart.selectAll("g")
.data(data)
.enter().append("g")
.attr("transform", function(d, i) { return "translate(0," + i * barHeight + ")"; });
bar.append("rect")
.attr("width", x)
.attr("height", barHeight - 1);
bar.append("text")
.attr("x", function(d) { return x(d) - 3; })
.attr("y", barHeight / 2)
.attr("dy", ".35em")
.text(function(d) { return d; });
http://bl.ocks.org/mbostock/7341714
Multi-line labels are also a little tricky, you might want to check out this wrap function.
I had the same trouble finding out the correct path for sessions on a Mac. All in all, I found out that the CLI PHP has a different temporary directory than the Apache module: Apache used /var/tmp
, while CLI used something like /var/folders/kf/hk_dyn7s2z9bh7y_j59cmb3m0000gn/T
. But both ways, sys_get_temp_dir()
got me the right path when session.save_path
is empty. Using PHP 5.5.4.
Pseudo code, something like:
CASE
When CHARINDEX('lactulose', dbo.Table.Column) > 0 Then 'BP Medication'
ELSE ''
END AS 'Medication Type'
This does not care where the keyword is found in the list and avoids depending on formatting of spaces and commas.
How about this?
fscanf(file,"%d %d %d %d %d %d %d",&line1_1,&line1_2, &line1_3, &line2_1, &line2_2, &line3_1, &line3_2);
In this case spaces in fscanf
match multiple occurrences of any whitespace until the next token in found.
Adding to Jacks solution. I need to Deserialize using the JsonProperty and Serialize while ignoring the JsonProperty (or vice versa). ReflectionHelper and Attribute Helper are just helper classes that get a list of properties or attributes for a property. I can include if anyone actually cares. Using the example below you can serialize the viewmodel and get "Amount" even though the JsonProperty is "RecurringPrice".
/// <summary>
/// Ignore the Json Property attribute. This is usefule when you want to serialize or deserialize differently and not
/// let the JsonProperty control everything.
/// </summary>
/// <typeparam name="T"></typeparam>
public class IgnoreJsonPropertyResolver<T> : DefaultContractResolver
{
private Dictionary<string, string> PropertyMappings { get; set; }
public IgnoreJsonPropertyResolver()
{
this.PropertyMappings = new Dictionary<string, string>();
var properties = ReflectionHelper<T>.GetGetProperties(false)();
foreach (var propertyInfo in properties)
{
var jsonProperty = AttributeHelper.GetAttribute<JsonPropertyAttribute>(propertyInfo);
if (jsonProperty != null)
{
PropertyMappings.Add(jsonProperty.PropertyName, propertyInfo.Name);
}
}
}
protected override string ResolvePropertyName(string propertyName)
{
string resolvedName = null;
var resolved = this.PropertyMappings.TryGetValue(propertyName, out resolvedName);
return (resolved) ? resolvedName : base.ResolvePropertyName(propertyName);
}
}
Usage:
var settings = new JsonSerializerSettings();
settings.DateFormatString = "YYYY-MM-DD";
settings.ContractResolver = new IgnoreJsonPropertyResolver<PlanViewModel>();
var model = new PlanViewModel() {Amount = 100};
var strModel = JsonConvert.SerializeObject(model,settings);
Model:
public class PlanViewModel
{
/// <summary>
/// The customer is charged an amount over an interval for the subscription.
/// </summary>
[JsonProperty(PropertyName = "RecurringPrice")]
public double Amount { get; set; }
/// <summary>
/// Indicates the number of intervals between each billing. If interval=2, the customer would be billed every two
/// months or years depending on the value for interval_unit.
/// </summary>
public int Interval { get; set; } = 1;
/// <summary>
/// Number of free trial days that can be granted when a customer is subscribed to this plan.
/// </summary>
public int TrialPeriod { get; set; } = 30;
/// <summary>
/// This indicates a one-time fee charged upfront while creating a subscription for this plan.
/// </summary>
[JsonProperty(PropertyName = "SetupFee")]
public double SetupAmount { get; set; } = 0;
/// <summary>
/// String representing the type id, usually a lookup value, for the record.
/// </summary>
[JsonProperty(PropertyName = "TypeId")]
public string Type { get; set; }
/// <summary>
/// Billing Frequency
/// </summary>
[JsonProperty(PropertyName = "BillingFrequency")]
public string Period { get; set; }
/// <summary>
/// String representing the type id, usually a lookup value, for the record.
/// </summary>
[JsonProperty(PropertyName = "PlanUseType")]
public string Purpose { get; set; }
}
No guarantee, but I suspect IE uses the older Protected Storage API.
It's very easy:
numb = raw_input('Input Line: ')
fiIn = open('file.txt').readlines()
for lines in fiIn:
if numb == lines[0]:
print lines
If you have forked a repository fro Delete your forked copy and fork it again from master.
If you want to store your output into your desktop, follow the below command using post command in git bash.It worked for me.
curl https://localhost:8080 --request POST --header "Content-Type: application/json" -o "C:\Desktop\test.txt"
Try the RoundUp function:
Dim i As Double
i = Application.WorksheetFunction.RoundUp(Cells(1, 1).Value * Cells(1, 2).Value, 2)
The documentation of MySQL says :
CREATE DATABASE creates a database with the given name. To use this statement, you need the CREATE privilege for the database. CREATE SCHEMA is a synonym for CREATE DATABASE as of MySQL 5.0.2.
So, it would seem normal that those two instruction do the same.
Modifying, or more correctly, adding additional HTTP headers is a great code debugging tool if nothing else.
When a URL request returns a redirect or an image there is no html "page" to temporarily write the results of debug code to - at least not one that is visible in a browser.
One approach is to write the data to a local log file and view that file later. Another is to temporarily add HTTP headers reflecting the data and variables being debugged.
I regularly add extra HTTP headers like X-fubar-somevar: or X-testing-someresult: to test things out - and have found a lot of bugs that would have otherwise been very difficult to trace.
You can do something like this, than you you'll access the native mongodb functions inside mongoose:
var mongoose = require("mongoose");
mongoose.connect('mongodb://localhost/local');
var connection = mongoose.connection;
connection.on('error', console.error.bind(console, 'connection error:'));
connection.once('open', function () {
connection.db.collection("YourCollectionName", function(err, collection){
collection.find({}).toArray(function(err, data){
console.log(data); // it will print your collection data
})
});
});
Here is an example
import numpy as np
import matplotlib.pyplot as plt
x = np.random.rand(100)
y = np.random.rand(100)
t = np.arange(100)
plt.scatter(x, y, c=t)
plt.show()
Here you are setting the color based on the index, t
, which is just an array of [1, 2, ..., 100]
.
Perhaps an easier-to-understand example is the slightly simpler
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(100)
y = x
t = x
plt.scatter(x, y, c=t)
plt.show()
Note that the array you pass as c
doesn't need to have any particular order or type, i.e. it doesn't need to be sorted or integers as in these examples. The plotting routine will scale the colormap such that the minimum/maximum values in c
correspond to the bottom/top of the colormap.
You can change the colormap by adding
import matplotlib.cm as cm
plt.scatter(x, y, c=t, cmap=cm.cmap_name)
Importing matplotlib.cm
is optional as you can call colormaps as cmap="cmap_name"
just as well. There is a reference page of colormaps showing what each looks like. Also know that you can reverse a colormap by simply calling it as cmap_name_r
. So either
plt.scatter(x, y, c=t, cmap=cm.cmap_name_r)
# or
plt.scatter(x, y, c=t, cmap="cmap_name_r")
will work. Examples are "jet_r"
or cm.plasma_r
. Here's an example with the new 1.5 colormap viridis:
import numpy as np
import matplotlib.pyplot as plt
x = np.arange(100)
y = x
t = x
fig, (ax1, ax2) = plt.subplots(1, 2)
ax1.scatter(x, y, c=t, cmap='viridis')
ax2.scatter(x, y, c=t, cmap='viridis_r')
plt.show()
You can add a colorbar by using
plt.scatter(x, y, c=t, cmap='viridis')
plt.colorbar()
plt.show()
Note that if you are using figures and subplots explicitly (e.g. fig, ax = plt.subplots()
or ax = fig.add_subplot(111)
), adding a colorbar can be a bit more involved. Good examples can be found here for a single subplot colorbar and here for 2 subplots 1 colorbar.
if you want to display date along with time when you export to Excel then you can use this
xlWorkSheet.Cells(nRow, 3).NumberFormat = "dd/mm/yy h:mm AM/PM"
Necromancing.
The provided answers are incomplete.
First, as already said, you cannot add multiple allow-from hosts, that's not supported.
Second, you need to dynamically extract that value from the HTTP referrer, which means that you can't add the value to Web.config, because it's not always the same value.
It will be necessary to do browser-detection to avoid adding allow-from when the browser is Chrome (it produces an error on the debug - console, which can quickly fill the console up, or make the application slow). That also means you need to modify the ASP.NET browser detection, as it wrongly identifies Edge as Chrome.
This can be done in ASP.NET by writing a HTTP-module which runs on every request, that appends a http-header for every response, depending on the request's referrer. For Chrome, it needs to add Content-Security-Policy.
// https://stackoverflow.com/questions/31870789/check-whether-browser-is-chrome-or-edge
public class BrowserInfo
{
public System.Web.HttpBrowserCapabilities Browser { get; set; }
public string Name { get; set; }
public string Version { get; set; }
public string Platform { get; set; }
public bool IsMobileDevice { get; set; }
public string MobileBrand { get; set; }
public string MobileModel { get; set; }
public BrowserInfo(System.Web.HttpRequest request)
{
if (request.Browser != null)
{
if (request.UserAgent.Contains("Edge")
&& request.Browser.Browser != "Edge")
{
this.Name = "Edge";
}
else
{
this.Name = request.Browser.Browser;
this.Version = request.Browser.MajorVersion.ToString();
}
this.Browser = request.Browser;
this.Platform = request.Browser.Platform;
this.IsMobileDevice = request.Browser.IsMobileDevice;
if (IsMobileDevice)
{
this.Name = request.Browser.Browser;
}
}
}
}
void context_EndRequest(object sender, System.EventArgs e)
{
if (System.Web.HttpContext.Current != null && System.Web.HttpContext.Current.Response != null)
{
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
try
{
// response.Headers["P3P"] = "CP=\\\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\\\"":
// response.Headers.Set("P3P", "CP=\\\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\\\"");
// response.AddHeader("P3P", "CP=\\\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\\\"");
response.AppendHeader("P3P", "CP=\\\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\\\"");
// response.AppendHeader("X-Frame-Options", "DENY");
// response.AppendHeader("X-Frame-Options", "SAMEORIGIN");
// response.AppendHeader("X-Frame-Options", "AllowAll");
if (System.Web.HttpContext.Current.Request.UrlReferrer != null)
{
// "X-Frame-Options": "ALLOW-FROM " Not recognized in Chrome
string host = System.Web.HttpContext.Current.Request.UrlReferrer.Scheme + System.Uri.SchemeDelimiter
+ System.Web.HttpContext.Current.Request.UrlReferrer.Authority
;
string selfAuth = System.Web.HttpContext.Current.Request.Url.Authority;
string refAuth = System.Web.HttpContext.Current.Request.UrlReferrer.Authority;
// SQL.Log(System.Web.HttpContext.Current.Request.RawUrl, System.Web.HttpContext.Current.Request.UrlReferrer.OriginalString, refAuth);
if (IsHostAllowed(refAuth))
{
BrowserInfo bi = new BrowserInfo(System.Web.HttpContext.Current.Request);
// bi.Name = Firefox
// bi.Name = InternetExplorer
// bi.Name = Chrome
// Chrome wants entire path...
if (!System.StringComparer.OrdinalIgnoreCase.Equals(bi.Name, "Chrome"))
response.AppendHeader("X-Frame-Options", "ALLOW-FROM " + host);
// unsafe-eval: invalid JSON https://github.com/keen/keen-js/issues/394
// unsafe-inline: styles
// data: url(data:image/png:...)
// https://www.owasp.org/index.php/Clickjacking_Defense_Cheat_Sheet
// https://www.ietf.org/rfc/rfc7034.txt
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
// https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
// https://stackoverflow.com/questions/10205192/x-frame-options-allow-from-multiple-domains
// https://content-security-policy.com/
// http://rehansaeed.com/content-security-policy-for-asp-net-mvc/
// This is for Chrome:
// response.AppendHeader("Content-Security-Policy", "default-src 'self' 'unsafe-inline' 'unsafe-eval' data: *.msecnd.net vortex.data.microsoft.com " + selfAuth + " " + refAuth);
System.Collections.Generic.List<string> ls = new System.Collections.Generic.List<string>();
ls.Add("default-src");
ls.Add("'self'");
ls.Add("'unsafe-inline'");
ls.Add("'unsafe-eval'");
ls.Add("data:");
// http://az416426.vo.msecnd.net/scripts/a/ai.0.js
// ls.Add("*.msecnd.net");
// ls.Add("vortex.data.microsoft.com");
ls.Add(selfAuth);
ls.Add(refAuth);
string contentSecurityPolicy = string.Join(" ", ls.ToArray());
response.AppendHeader("Content-Security-Policy", contentSecurityPolicy);
}
else
{
response.AppendHeader("X-Frame-Options", "SAMEORIGIN");
}
}
else
response.AppendHeader("X-Frame-Options", "SAMEORIGIN");
}
catch (System.Exception ex)
{
// WTF ?
System.Console.WriteLine(ex.Message); // Suppress warning
}
} // End if (System.Web.HttpContext.Current != null && System.Web.HttpContext.Current.Response != null)
} // End Using context_EndRequest
private static string[] s_allowedHosts = new string[]
{
"localhost:49533"
,"localhost:52257"
,"vmcompany1"
,"vmcompany2"
,"vmpostalservices"
,"example.com"
};
public static bool IsHostAllowed(string host)
{
return Contains(s_allowedHosts, host);
} // End Function IsHostAllowed
public static bool Contains(string[] allowed, string current)
{
for (int i = 0; i < allowed.Length; ++i)
{
if (System.StringComparer.OrdinalIgnoreCase.Equals(allowed[i], current))
return true;
} // Next i
return false;
} // End Function Contains
You need to register the context_EndRequest function in the HTTP-module Init function.
public class RequestLanguageChanger : System.Web.IHttpModule
{
void System.Web.IHttpModule.Dispose()
{
// throw new NotImplementedException();
}
void System.Web.IHttpModule.Init(System.Web.HttpApplication context)
{
// https://stackoverflow.com/questions/441421/httpmodule-event-execution-order
context.EndRequest += new System.EventHandler(context_EndRequest);
}
// context_EndRequest Code from above comes here
}
Next you need to add the module to your application. You can either do this programmatically in Global.asax by overriding the Init function of the HttpApplication, like this:
namespace ChangeRequestLanguage
{
public class Global : System.Web.HttpApplication
{
System.Web.IHttpModule mod = new libRequestLanguageChanger.RequestLanguageChanger();
public override void Init()
{
mod.Init(this);
base.Init();
}
protected void Application_Start(object sender, System.EventArgs e)
{
}
protected void Session_Start(object sender, System.EventArgs e)
{
}
protected void Application_BeginRequest(object sender, System.EventArgs e)
{
}
protected void Application_AuthenticateRequest(object sender, System.EventArgs e)
{
}
protected void Application_Error(object sender, System.EventArgs e)
{
}
protected void Session_End(object sender, System.EventArgs e)
{
}
protected void Application_End(object sender, System.EventArgs e)
{
}
}
}
or you can add entries to Web.config if you don't own the application source-code:
<httpModules>
<add name="RequestLanguageChanger" type= "libRequestLanguageChanger.RequestLanguageChanger, libRequestLanguageChanger" />
</httpModules>
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules runAllManagedModulesForAllRequests="true">
<add name="RequestLanguageChanger" type="libRequestLanguageChanger.RequestLanguageChanger, libRequestLanguageChanger" />
</modules>
</system.webServer>
</configuration>
The entry in system.webServer is for IIS7+, the other in system.web is for IIS 6.
Note that you need to set runAllManagedModulesForAllRequests to true, for that it works properly.
The string in type is in the format "Namespace.Class, Assembly"
.
Note that if you write your assembly in VB.NET instead of C#, VB creates a default-Namespace for each project, so your string will look like
"[DefaultNameSpace.Namespace].Class, Assembly"
If you want to avoid this problem, write the DLL in C#.
Here is an extension method that will convert an object to a ViewDataDictionary.
public static ViewDataDictionary ToViewDataDictionary(this object values)
{
var dictionary = new ViewDataDictionary();
foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(values))
{
dictionary.Add(property.Name, property.GetValue(values));
}
return dictionary;
}
You can then use it in your view like so:
@Html.Partial("_MyPartial", new
{
Property1 = "Value1",
Property2 = "Value2"
}.ToViewDataDictionary())
Which is much nicer than the new ViewDataDictionary { { "Property1", "Value1" } , { "Property2", "Value2" }}
syntax.
Then in your partial view, you can use ViewBag
to access the properties from a dynamic object rather than indexed properties, e.g.
<p>@ViewBag.Property1</p>
<p>@ViewBag.Property2</p>
Do you mean altering the table after it has been created? If so you need to use alter table, in particular:
ALTER TABLE tablename MODIFY COLUMN new-column-definition
e.g.
ALTER TABLE test MODIFY COLUMN locationExpect VARCHAR(120);
I would recommend Ulrich Drepper's SHA-256/SHA-512 based crypt implementation.
We ported these algorithms to Java, and you can find a freely licensed version of them at ftp://ftp.arlut.utexas.edu/java_hashes/.
Note that most modern (L)Unices support Drepper's algorithm in their /etc/shadow files.
Why not put some junk in your .htaccess file and try to reload apache. If apache fails to start you know its working. Remove the junk then reload apache if it loads congrats you configured .htaccess correctly.
HTMLDocument DOC = this.MySuperBrowser.Document as HTMLDocument;
public IHTMLAnchorElement imageElementHref;
imageElementHref = DOC.getElementById("idfirsticonhref") as IHTMLAnchorElement;
Simply try this code
see here under 3.5.3(shell parameter expansion)
so in your case
${VARIABLE:-default}
I had to get rid of the NULL values before using the command recommended by Andy above. An example:
df = pd.DataFrame(index = [0, 1, 2], columns=['first', 'second', 'third'])
df.ix[:, 'first'] = 'myword'
df.ix[0, 'second'] = 'myword'
df.ix[2, 'second'] = 'myword'
df.ix[1, 'third'] = 'myword'
df
first second third
0 myword myword NaN
1 myword NaN myword
2 myword myword NaN
Now running the command:
~df["second"].str.contains(word)
I get the following error:
TypeError: bad operand type for unary ~: 'float'
I got rid of the NULL values using dropna() or fillna() first and retried the command with no problem.
Need to set the foreign key option as on delete cascade... in tables which contains foreign key columns.... It need to set at the time of table creation or add later using ALTER table
I had same issue. i follow following steps
1)switch your branch which having issue to other branch
2) delete that branch
3) checkout again.
Note:- You can stash you uncommitted changes and put it back again.
As of Laravel v7.X, the framework now comes with a minimal API wrapped around the Guzzle HTTP client. It provides an easy way to make get, post, put, patch, and delete requests using the HTTP Client:
use Illuminate\Support\Facades\Http;
$response = Http::get('http://test.com');
$response = Http::post('http://test.com');
$response = Http::put('http://test.com');
$response = Http::patch('http://test.com');
$response = Http::delete('http://test.com');
You can manage responses using the set of methods provided by the Illuminate\Http\Client\Response
instance returned.
$response->body() : string;
$response->json() : array;
$response->status() : int;
$response->ok() : bool;
$response->successful() : bool;
$response->serverError() : bool;
$response->clientError() : bool;
$response->header($header) : string;
$response->headers() : array;
Please note that you will, of course, need to install Guzzle like so:
composer require guzzlehttp/guzzle
There are a lot more helpful features built-in and you can find out more about these set of the feature here: https://laravel.com/docs/7.x/http-client
This is definitely now the easiest way to make external API calls within Laravel.
This may not be exactly on target because I am not completely clear on what you want to do. However, assuming you mean you want to assign a different class to a div in response to an event, the answer is yes, you can certainly do this with jQuery. I am only a jQuery beginner, but I have used the following in my code:
$(document).ready(function() {
$("#someElementID").click(function() { // this is your event
$("#divID").addClass("second"); // here your adding the new class
)};
)};
If you wanted to replace the first class with the second class, I believe you would use removeClass first and then addClass as I did above. toggleClass may also be worth a look. The jQuery documentation is well written for these type of changes, with examples.
Someone else my have a better option, but I hope that helps!
Using spinlocks on a single-core/single-CPU system makes usually no sense, since as long as the spinlock polling is blocking the only available CPU core, no other thread can run and since no other thread can run, the lock won't be unlocked either. IOW, a spinlock wastes only CPU time on those systems for no real benefit
This is wrong. There is no wastage of cpu cycles in using spinlocks on uni processor systems, because once a process takes a spin lock , preemption is disabled , so as such, there could be no one else spinning! It's just that using it doesn't make any sense! Hence, spinlocks on Uni systems are replaced by preempt_disable at compile time by the kernel!
Leaving my specific solution of this for prosperity, as it's a tricky version of this problem:
Type 'System.Linq.Enumerable+WhereSelectArrayIterator[T...] was not marked as serializable
Due to a class with an attribute IEnumerable<int>
eg:
[Serializable]
class MySessionData{
public int ID;
public IEnumerable<int> RelatedIDs; //This can be an issue
}
Originally the problem instance of MySessionData
was set from a non-serializable list:
MySessionData instance = new MySessionData(){
ID = 123,
RelatedIDs = nonSerizableList.Select<int>(item => item.ID)
};
The cause here is the concrete class that the Select<int>(...)
returns, has type data that's not serializable, and you need to copy the id's to a fresh List<int>
to resolve it.
RelatedIDs = nonSerizableList.Select<int>(item => item.ID).ToList();
If you use a Language Resource file to set the labels in your application you need to set the its value:
CultureInfo customCulture = new CultureInfo("en-US");
Languages.Culture = customCulture;
You can write your own generator. The secret key is essentially a byte array. Make sure that the string that you convert to a byte array is base64 encoded.
In Java, you could do something like this.
String key = "random_secret_key";
String base64Key = DatatypeConverter.printBase64Binary(key.getBytes());
byte[] secretBytes = DatatypeConverter.parseBase64Binary(base64Key);
One thing to note is that not all libraries will use the same meaning for pi, of course, so it never hurts to know what you're using. For example, the symbolic math library Sympy's representation of pi is not the same as math and numpy:
import math
import numpy
import scipy
import sympy
print(math.pi == numpy.pi)
> True
print(math.pi == scipy.pi)
> True
print(math.pi == sympy.pi)
> False
A Java class can only extend one parent class. Multiple inheritance is not allowed. Interfaces are not classes, however, and an interface can extend more than one parent interface.
for example, take a look here: http://www.tutorialspoint.com/java/java_interfaces.htm
you need declare resources in dispatcher servelet file.below is two declarations
<mvc:annotation-driven />
<mvc:resources location="/resources/" mapping="/resources/**" />
If you're in react native project, and Expo is running, then close it.
Re-install the package, and everything should be fine.
I just needed to do this, and I found that you can easily add files in subdirectories. You only need to be on the "top directory" of the repo, and then run something like:
$ git add ./subdir/file_in_subdir.txt