I modified the /etc/sysconfig/ip6tables-config
file changing:
IP6TABLES_SAVE_ON_STOP="no"
To:
IP6TABLES_SAVE_ON_STOP="yes"
And this:
IP6TABLES_SAVE_ON_RESTART="no"
To:
IP6TABLES_SAVE_ON_RESTART="yes"
This seemed to save the changes I made using the iptables commands through a reboot.
My "standard workaround" uses socat as the user-space redirector:
socat tcp6-listen:80,fork tcp6:8080
Beware that this won't scale, forking is expensive but it's the way socat works.
You can always use iptables to delete the rules. If you have a lot of rules, just output them using the following command.
iptables-save > myfile
vi
to edit them from the commend line. Just use the "dd" to delete the lines you no longer want.
iptables-restore < myfile and you're good to go.
REMEMBER THAT IF YOU DON'T CONFIGURE YOUR OS TO SAVE THE RULES TO A FILE AND THEN LOAD THE FILE DURING THE BOOT THAT YOUR RULES WILL BE LOST.
Example:
iptables -A INPUT -j LOG --log-prefix "INPUT:DROP:" --log-level 6
iptables -A INPUT -j DROP
Log Exampe:
Feb 19 14:18:06 servername kernel: INPUT:DROP:IN=eth1 OUT= MAC=aa:bb:cc:dd:ee:ff:11:22:33:44:55:66:77:88 SRC=x.x.x.x DST=x.x.x.x LEN=48 TOS=0x00 PREC=0x00 TTL=117 ID=x PROTO=TCP SPT=x DPT=x WINDOW=x RES=0x00 SYN URGP=0
Other options:
LOG
Turn on kernel logging of matching packets. When this option
is set for a rule, the Linux kernel will print some
information on all matching packets
(like most IP header fields) via the kernel log (where it can
be read with dmesg or syslogd(8)). This is a "non-terminating
target", i.e. rule traversal
continues at the next rule. So if you want to LOG the packets
you refuse, use two separate rules with the same matching
criteria, first using target LOG
then DROP (or REJECT).
--log-level level
Level of logging (numeric or see syslog.conf(5)).
--log-prefix prefix
Prefix log messages with the specified prefix; up to 29
letters long, and useful for distinguishing messages in
the logs.
--log-tcp-sequence
Log TCP sequence numbers. This is a security risk if the
log is readable by users.
--log-tcp-options
Log options from the TCP packet header.
--log-ip-options
Log options from the IP packet header.
--log-uid
Log the userid of the process which generated the packet.
It maybe useful to add that if you're seeing this error message and you're not using some kind of restricted container based hosting (e.g. OpenVZ) then the problem maybe that the kernel is missing the nat modules. To check run:
modinfo iptable_nat
Which should print out the location of the module, if it prints an ERROR then you know that is your problem. There are also dependent modules like nf_nat which might be missing so you'll have to dig deeper if the iptable_nat module is there but fails. If it is missing you'll need to get another kernel and modules, or if you're rolling your own ensure that the kernel config contains CONFIG_IP_NF_NAT=m
(for IPv4 NAT).
For info the relevant kernel module is usually found in one of these locations:
ls /lib/modules/`uname -r`/kernel/net/netfilter/
ls /lib/modules/`uname -r`/kernel/net/ipv4/netfilter/
And if you're running IPv6 also look here:
ls /lib/modules/`uname -r`/kernel/net/ipv6/netfilter/
As far as i know, writing multiple matches is logical AND operation; so what your rule means is if the destination port is "59100" AND "3000" then reject connection with tcp-reset; Workaround is using -mport option. Look out for the man page.
The best solution that works for me without any problems looks this way:
1. Add temporary rule with some comment:
comment=$(cat /proc/sys/kernel/random/uuid | sed 's/\-//g')
iptables -A ..... -m comment --comment "${comment}" -j REQUIRED_ACTION
2. When the rule added and you wish to remove it (or everything with this comment), do:
iptables-save | grep -v "${comment}" | iptables-restore
So, you'll 100% delete all rules that match the $comment and leave other lines untouched. This solution works for last 2 months with about 100 changes of rules per day - no issues.Hope, it helps
About your command line:
root@debian:/# sudo iptables -A INPUT -p tcp --dport 3306 --jump ACCEPT
root@debian:/# iptables-save
You are already authenticated as root
so sudo
is redundant there.
You are missing the -j
or --jump
just before the ACCEPT
parameter (just tought that was a typo and you are inserting it correctly).
About yout question:
If you are inserting the iptables
rule correctly as you pointed it in the question, maybe the issue is related to the hypervisor (virtual machine provider) you are using.
If you provide the hypervisor name (VirtualBox, VMWare?) I can further guide you on this but here are some suggestions you can try first:
check your vmachine network settings and:
if it is set to NAT, then you won't be able to connect from your base machine to the vmachine.
if it is set to Hosted, you have to configure first its network settings, it is usually to provide them an IP in the range 192.168.56.0/24, since is the default the hypervisors use for this.
if it is set to Bridge, same as Hosted but you can configure it whenever IP range makes sense for you configuration.
Hope this helps.
It appears that the use of SAPPLY on a data.frame to convert variables to factors at once does not work as it produces a matrix/ array. My approach is to use LAPPLY instead, as follows.
## let us create a data.frame here
class <- c("7", "6", "5", "3")
cash <- c(100, 200, 300, 150)
height <- c(170, 180, 150, 165)
people <- data.frame(class, cash, height)
class(people) ## This is a dataframe
## We now apply lapply to the data.frame as follows.
bb <- lapply(people, as.factor) %>% data.frame()
## The lapply part returns a list which we coerce back to a data.frame
class(bb) ## A data.frame
##Now let us check the classes of the variables
class(bb$class)
class(bb$height)
class(bb$cash) ## as expected, are all factors.
You can use package manager (pm
) over adb shell
to list packages:
adb shell pm list packages | sort
and to display where the .apk
file is:
adb shell pm path com.king.candycrushsaga
package:/data/app/com.king.candycrushsaga-1/base.apk
And adb pull
to download the apk.
adb pull data/app/com.king.candycrushsaga-1/base.apk
Like user2680100 said, in Golang you can have the structure:
if <statement>; <evaluation> {
[statements ...]
} else {
[statements ...]
}
This is useful to shortcut some expressions that need error checking, or another kind of boolean checking, like:
var number int64
if v := os.Getenv("NUMBER"); v != "" {
if number, err = strconv.ParseInt(v, 10, 64); err != nil {
os.Exit(42)
}
} else {
os.Exit(1)
}
With this you can achieve something like (in C):
Sprite *buffer = get_sprite("foo.png");
Sprite *foo_sprite = (buffer != 0) ? buffer : donut_sprite
But is evident that this sugar in Golang have to be used with moderation, for me, personally, I like to use this sugar with max of one level of nesting, like:
var number int64
if v := os.Getenv("NUMBER"); v != "" {
number, err = strconv.ParseInt(v, 10, 64)
if err != nil {
os.Exit(42)
}
} else {
os.Exit(1)
}
You can also implement ternary expressions with functions like func Ternary(b bool, a interface{}, b interface{}) { ... }
but i don't like this approach, looks like a creation of a exception case in syntax, and creation of this "features", in my personal opinion, reduce the focus on that matters, that is algorithm and readability, but, the most important thing that makes me don't go for this way is that fact that this can bring a kind of overhead, and bring more cycles to in your program execution.
Select the Object -> Format -> Selection Pane -> Double click to change the name
Text boxes in worksheets are sometimes not updated when their text or formatting is changed, and even the DoEvent command does not help.
As there is no command in Excel to refresh a worksheet in the way a user form can be refreshed, it is necessary to use a trick to force Excel to update the screen.
The following commands seem to do the trick:
- ActiveSheet.Calculate
- ActiveWindow.SmallScroll
- Application.WindowState = Application.WindowState
You will have to parse the content somehow ... I find using LINQ the most easy way to do it. Again, it all depends on your exact scenario. Here's a working example using LINQ to format an input XML string.
string FormatXml(string xml)
{
try
{
XDocument doc = XDocument.Parse(xml);
return doc.ToString();
}
catch (Exception)
{
// Handle and throw if fatal exception here; don't just ignore them
return xml;
}
}
[using statements are ommitted for brevity]
ACTUALLY.. This is brand new mind you.. On the newest version of OS X (Mavericks) you CAN send push notifications from a webpage to the desktop. But according to the documentation, NOT iPhones:
Note: This document pertains to OS X only. Notifications for websites do not appear on iOS.
Currently Apple has plans to allow 2 kinds of push notifications: OS X Website Push Notifications and Local Notifications.
The obvious hurdle here is that this will not work on PCs, nor will it allow you to do android push notifications.
Furthermore, you actually can with versions as old as Snow Leapord, send push notifications from a website as long as said website is open and active. The new Mavericks OS will allow push notifications even if the site isnt opened, assuming you have already given permission to said site to send push notifications.
From the mouth of Apple:
In OS X v10.9 and later, you can dispatch OS X Website Push Notifications from your web server directly to OS X users by using the Apple Push Notification service (APNs). Not to be confused with local notifications, push notifications can reach your users regardless of whether your website or their web browser is open…
To integrate push notifications in your website, you first present an interface that allows the user to opt in to receive notifications. If the user consents, Safari contacts your website requesting its credentials in the form of a file called a push package. The push package also contains notification assets used throughout OS X and data used to communicate to a web service you configure. If the push package is valid, you receive a unique identifier for the user on the device known as a device token. The user receives the notification when you send the combination of this device token and your message, or payload, to APNs.
Upon receiving the notification, the user can click on it to open a webpage of your choosing in the user’s default browser.
Note: If you need a refresher on APNs, read the “Apple Push Notification Service” chapter in Local and Push Notification Programming Guide. Although the document is specific to iOS and OS X push notifications, paradigms of the push notification service still apply.
Do configure --help
and see what other options are available.
It is very common to provide different options to override different locations. By standard, --prefix
overrides all of them, so you need to override config location after specifying the prefix. This course of actions usually works for every automake-based project.
The worse case scenario is when you need to modify the configure script, or even worse, generated makefiles and config.h headers. But yeah, for Xfce you can try something like this:
./configure --prefix=/home/me/somefolder/mybuild/output/target --sysconfdir=/etc
I believe that should do it.
I wrote this in my project, and it works... probably;)
$.fn.addSvgClass = function(className) {
var attr
this.each(function() {
attr = $(this).attr('class')
if(attr.indexOf(className) < 0) {
$(this).attr('class', attr+' '+className+ ' ')
}
})
};
$.fn.removeSvgClass = function(className) {
var attr
this.each(function() {
attr = $(this).attr('class')
attr = attr.replace(className , ' ')
$(this).attr('class' , attr)
})
};
examples
$('path').addSvgClass('fillWithOrange')
$('path').removeSvgClass('fillWithOrange')
__getitem__
can be used to implement "lazy" dict
subclasses. The aim is to avoid instantiating a dictionary at once that either already has an inordinately large number of key-value pairs in existing containers, or has an expensive hashing process between existing containers of key-value pairs, or if the dictionary represents a single group of resources that are distributed over the internet.
As a simple example, suppose you have two lists, keys
and values
, whereby {k:v for k,v in zip(keys, values)}
is the dictionary that you need, which must be made lazy for speed or efficiency purposes:
class LazyDict(dict):
def __init__(self, keys, values):
self.keys = keys
self.values = values
super().__init__()
def __getitem__(self, key):
if key not in self:
try:
i = self.keys.index(key)
self.__setitem__(self.keys.pop(i), self.values.pop(i))
except ValueError, IndexError:
raise KeyError("No such key-value pair!!")
return super().__getitem__(key)
Usage:
>>> a = [1,2,3,4]
>>> b = [1,2,2,3]
>>> c = LazyDict(a,b)
>>> c[1]
1
>>> c[4]
3
>>> c[2]
2
>>> c[3]
2
>>> d = LazyDict(a,b)
>>> d.items()
dict_items([])
Try this:
nohup python -u <your file name>.py >> <your log file>.log &
You can run above command in screen and come out of screen.
Now you can tail logs of your python script by: tail -f <your log file>.log
To kill you script, you can use ps -aux and kill commands.
1. From Package Explorer
open the Filters...
dialog:
2. Then uncheck .* resources
option:
For the record:
I created the same issue by adding an empty repository as submodule. In this case, there was no reference hash available for the submodule, leading to the error described by the original poster.
Force-adding the repository after having committed to it solved the issue (as in Arvids post)
git submodule add --force [email protected] destination
Dynatrace AJAX Edition shows you the exact sequence of page loading, parsing and execution.
Use DateTime.TryParseExact()
if you want to match against a specific date format
string format = "ddd dd MMM h:mm tt yyyy";
DateTime dateTime;
if (DateTime.TryParseExact(dateString, format, CultureInfo.InvariantCulture,
DateTimeStyles.None, out dateTime))
{
Console.WriteLine(dateTime);
}
else
{
Console.WriteLine("Not a date");
}
What you have is a valid ADO.NET connection string - but it's NOT a valid Entity Framework connection string.
The EF connection string would look something like this:
<connectionStrings>
<add name="NorthwindEntities" connectionString=
"metadata=.\Northwind.csdl|.\Northwind.ssdl|.\Northwind.msl;
provider=System.Data.SqlClient;
provider connection string="Data Source=SERVER\SQL2000;Initial Catalog=Northwind;Integrated Security=True;MultipleActiveResultSets=False""
providerName="System.Data.EntityClient" />
</connectionStrings>
You're missing all the metadata=
and providerName=
elements in your EF connection string...... you basically only have what's contained in the provider connection string
part.
Using the EDMX designer should create a valid EF connection string for you, in your web.config or app.config.
Marc
UPDATE: OK, I understand what you're trying to do: you need a second "ADO.NET" connection string just for ASP.NET user / membership database. Your string is OK, but the providerName is wrong - it would have to be "System.Data.SqlClient" - this connection doesn't use ENtity Framework - don't specify the "EntityClient" for it then!
<add name="ASPNETMembership"
connectionString="Data Source=MONTGOMERY-DEV\SQLEXPRESS;Initial Catalog=ASPNETDB;Integrated Security=True;"
providerName="System.Data.SqlClient" />
If you specify providerName=System.Data.EntityClient
==> Entity Framework connection string (with the metadata= and everything).
If you need and specify providerName=System.Data.SqlClient
==> straight ADO.NET SQL Server connection string without all the EF additions
You can just use wildcards in the predicate (after IF, WHERE or ON):
@mainstring LIKE '%' + @substring + '%'
or in this specific case
' ' + @mainstring + ' ' LIKE '% ME[., ]%'
(Put the spaces in the quoted string if you're looking for the whole word, or leave them out if ME can be part of a bigger word).
Yes, to increase the threads number you need to increase the virtual memory or decrease the stack size. In Raspberry Pi I didn’t find a way to increase the virtual memory, if a decrease the stack size from default 8MB to 1MB It is possibly get more than 1000 threads per process but decrease the stack size with the “ulimit -s” command make this for all threads. So, my solution was use “pthread_t” instance “thread class” because the pthread_t let me set the stack size per each thread. Finally, I am available to archive more than 1000 threads per process in Raspberry Pi each one with 1MB of stack.
If your credentials are stored in the credential helper, the portable way to remove a password persisted for a specific host is to call git credential reject
:
$ git credential reject
protocol=https
host=bitbucket.org
?
or
$ git credential reject
url=https://bitbucket.org
?
After that, to enter your new password, type git fetch
.
just set the width of the td/column you want to be fixed and the rest will expand.
<td width="200"></td>
This may be a good explanation example
CREATE TABLE employees (
id INTEGER NOT NULL PRIMARY KEY,
managerId INTEGER REFERENCES employees(id),
name VARCHAR(30) NOT NULL
);
INSERT INTO employees(id, managerId, name) VALUES(1, NULL, 'John');
INSERT INTO employees(id, managerId, name) VALUES(2, 1, 'Mike');
-- Explanation: -- In this example. -- John is Mike's manager. Mike does not manage anyone. -- Mike is the only employee who does not manage anyone.
PHP 7.2 moved completely away from Mcrypt
and the encryption now is based on the maintainable Libsodium
library.
All your encryption needs can be basically resolved through Libsodium
library.
// On Alice's computer:
$msg = 'This comes from Alice.';
$signed_msg = sodium_crypto_sign($msg, $secret_sign_key);
// On Bob's computer:
$original_msg = sodium_crypto_sign_open($signed_msg, $alice_sign_publickey);
if ($original_msg === false) {
throw new Exception('Invalid signature');
} else {
echo $original_msg; // Displays "This comes from Alice."
}
Libsodium documentation: https://github.com/paragonie/pecl-libsodium-doc
for out
@Test
void it_prints_out() {
PrintStream save_out=System.out;final ByteArrayOutputStream out = new ByteArrayOutputStream();System.setOut(new PrintStream(out));
System.out.println("Hello World!");
assertEquals("Hello World!\r\n", out.toString());
System.setOut(save_out);
}
for err
@Test
void it_prints_err() {
PrintStream save_err=System.err;final ByteArrayOutputStream err= new ByteArrayOutputStream();System.setErr(new PrintStream(err));
System.err.println("Hello World!");
assertEquals("Hello World!\r\n", err.toString());
System.setErr(save_err);
}
That's not how you send file on postman. What you did is sending a string which is the path of your image, nothing more.
What you should do is;
You're ready to go.
In your Django view,
from rest_framework.views import APIView
from rest_framework.parsers import MultiPartParser
from rest_framework.decorators import parser_classes
@parser_classes((MultiPartParser, ))
class UploadFileAndJson(APIView):
def post(self, request, format=None):
thumbnail = request.FILES["file"]
info = json.loads(request.data['info'])
...
return HttpResponse()
you don't need define positioning when you need vertical align center for inline and block elements you can take mentioned below idea:-
inline-elements :- <img style="vertical-align:middle" ...>
<span style="display:inline-block; vertical-align:middle"> foo<br>bar </span>
block-elements :- <td style="vertical-align:middle"> ... </td>
<div style="display:table-cell; vertical-align:middle"> ... </div>
see the demo:- http://jsfiddle.net/Ewfkk/2/
mvn clean package -DpropEnv=PROD
Then using like this in POM.xml
<properties>
<myproperty>${propEnv}</myproperty>
</properties>
You can do that by storing cookies on client side.
this is how i did it:
String[] listAges = getResources().getStringArray(R.array.ages);
// Creating adapter for spinner
ArrayAdapter<String> dataAdapter =
new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, listAges);
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner_age.getBackground().setColorFilter(ContextCompat.getColor(this, R.color.spinner_icon), PorterDuff.Mode.SRC_ATOP);
spinner_age.setAdapter(dataAdapter);
spinner_age.setSelection(0);
spinner_age.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String item = parent.getItemAtPosition(position).toString();
if(position > 0){
// get spinner value
Toast.makeText(parent.getContext(), "Age..." + item, Toast.LENGTH_SHORT).show();
}else{
// show toast select gender
Toast.makeText(parent.getContext(), "none" + item, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
Important difference between setting Classpath in Windows and Linux is path separator which is ";" (semi-colon) in Windows and ":" (colon) in Linux. Also %PATH%
is used to represent value of existing path variable in Windows while ${PATH}
is used for same purpose in Linux (in the bash shell). Here is the way to setup classpath in Linux:
export CLASSPATH=${CLASSPATH}:/new/path
but as such Classpath is very tricky and you may wonder why your program is not working even after setting correct Classpath. Things to note:
-cp
options overrides CLASSPATH
environment variable.-cp
and CLASSPATH
envorinment variable.Reference: How Classpath works in Java.
Considering you have already downloaded SDK platform tools.
This command will set ADB locally. So if you close the terminal and open it again, ADB commands won't work until you run this command again.
export PATH=~/Library/Android/sdk/platform-tools:$PATH
These commands will set ADB globally. So once you run these commands no need to set them again next time.
echo 'export PATH=$PATH:~/Library/Android/sdk/platform-tools/' >> ~/.bash_profile
source ~/.bash_profile
The closest you can get to an asynchronous constructor is by waiting for it to finish executing if it hasn't already in all of its methods:
class SomeClass {
constructor() {
this.asyncConstructor = (async () => {
// Perform asynchronous operations here
})()
}
async someMethod() {
await this.asyncConstructor
// Perform normal logic here
}
}
So basically I'm looking at this in the wrong way. From what I see, this is not a React specific question, more of a JavaScript question in how do I combine two JavaScript objects together (without clobbering similarly named properties).
In this StackOverflow answer it explains it. How can I merge properties of two JavaScript objects dynamically?
In jQuery I can use the extend method.
You should always use "throw;" to rethrow the exceptions in .NET,
Refer this, http://weblogs.asp.net/bhouse/archive/2004/11/30/272297.aspx
Basically MSIL (CIL) has two instructions - "throw" and "rethrow" and C#'s "throw ex;" gets compiled into MSIL's "throw" and C#'s "throw;" - into MSIL "rethrow"! Basically I can see the reason why "throw ex" overrides the stack trace.
For me, these steps worked in Ubuntu with PHP 7.3:
1. vi /etc/php/7.3/apache2/php.ini > uncomment:
;extension=pdo_sqlite
;extension=pdo_mysql
2. sudo apt-get install php7.3-sqlite3
3. sudo service apache2 restart
If you're able to use MySQL Workbench, you can do this by right-clicking the row and selecting 'Copy row', and then right-clicking the empty row and selecting 'Paste row', and then changing the ID, and then clicking 'Apply'.
Copy the row:
Paste the copied row into the blank row:
Change the ID:
Apply:
Note that if you use DictWriter, you will have a new line from the open function and a new line from the writerow function. You can use newline='' within the open function to remove the extra newline.
Got the issue when trying Xcode 9 beta and going back to Xcode 8. A simple Clean on the target resolved the issue.
Can a modulus be negative?
%
can be negative as it is the remainder operator, the remainder after division, not after Euclidean_division. Since C99 the result may be 0, negative or positive.
// a % b
7 % 3 --> 1
7 % -3 --> 1
-7 % 3 --> -1
-7 % -3 --> -1
The modulo OP wanted is a classic Euclidean modulo, not %
.
I was expecting a positive result every time.
To perform a Euclidean modulo that is well defined whenever a/b
is defined, a,b
are of any sign and the result is never negative:
int modulo_Euclidean(int a, int b) {
int m = a % b;
if (m < 0) {
// m += (b < 0) ? -b : b; // avoid this form: it is UB when b == INT_MIN
m = (b < 0) ? m - b : m + b;
}
return m;
}
modulo_Euclidean( 7, 3) --> 1
modulo_Euclidean( 7, -3) --> 1
modulo_Euclidean(-7, 3) --> 2
modulo_Euclidean(-7, -3) --> 2
I'm surprised nobody mentioned the use of sibling combinators, which are supported by IE7 and later:
tr + tr /* CSS2, adjacent sibling */
tr ~ tr /* CSS3, general sibling */
They both function in exactly the same way (in the context of HTML tables anyway) as:
tr:not(:first-child)
You cannot add a column with a default value in Hive. You have the right syntax for adding the column ALTER TABLE test1 ADD COLUMNS (access_count1 int);
, you just need to get rid of default sum(max_count)
. No changes to that files backing your table will happen as a result of adding the column. Hive handles the "missing" data by interpreting NULL
as the value for every cell in that column.
So now your have the problem of needing to populate the column. Unfortunately in Hive you essentially need to rewrite the whole table, this time with the column populated. It may be easier to rerun your original query with the new column. Or you could add the column to the table you have now, then select all of its columns plus value for the new column.
You also have the option to always COALESCE
the column to your desired default and leave it NULL
for now. This option fails when you want NULL
to have a meaning distinct from your desired default. It also requires you to depend on always remembering to COALESCE
.
If you are very confident in your abilities to deal with the files backing Hive, you could also directly alter them to add your default. In general I would recommend against this because most of the time it will be slower and more dangerous. There might be some case where it makes sense though, so I've included this option for completeness.
I had this problem. I'll share my ride on the learning curve.
First, I couldn't find how to reject the binary but remembered seeing it earlier today in the iTunesConnect App. So using the App I rejected the binary.
If you "mouse over" the rejected binary under the "Build" section you'll notice that a red circle icon with a - (i.e. a delete button) appears. Tap on this and then hit the save button at the top of the screen. Submitted binary is now gone.
You should now get all the notifications for the app being in state "Prepare for Upload" (email, App notification etc).
Xcode organiser was still giving me "Redundant Binary". After a bit of research I now understand the difference between "Version" & "Build". Version is what iTunes displays and the user sees. Build is just the internal tracking number. I had both at 2.3.0, I changed build to 2.3.0.1 and re-Archive. Now it validates and I can upload the new binary and re-submit. Hope that helps others!
Most easy way: sort files with sort(1) and then use diff(1).
According to Apple documentation of NSDate compare:
Returns an NSComparisonResult value that indicates the temporal ordering of the receiver and another given date.
- (NSComparisonResult)compare:(NSDate *)anotherDate
Parameters
anotherDate
The date with which to compare the receiver. This value must not be nil. If the value is nil, the behavior is undefined and may change in future versions of Mac OS X.
Return Value
If:
The receiver and anotherDate are exactly equal to each other,
NSOrderedSame
The receiver is later in time than anotherDate,
NSOrderedDescending
The receiver is earlier in time than anotherDate,
NSOrderedAscending
In other words:
if ([date1 compare:date2] == NSOrderedSame) ...
Note that it might be easier in your particular case to read and write this :
if ([date2 isEqualToDate:date2]) ...
Yes, if you use the SQL Server Agent.
Open your Enterprise Manager, and go to the Management folder under the SQL Server instance you are interested in. There you will see the SQL Server Agent, and underneath that you will see a Jobs section.
Here you can create a new job and you will see a list of steps you will need to create. When you create a new step, you can specify the step to actually run a stored procedure (type TSQL Script). Choose the database, and then for the command section put in something like:
exec MyStoredProcedure
That's the overview, post back here if you need any further advice.
[I actually thought I might get in first on this one, boy was I wrong :)]
$.each($('input[type=number]'),function(){
alert($(this).val());
});
This will alert the value of input type number
fields
Demo is present at http://jsfiddle.net/2dJAN/33/
In your mobile device,make sure you have enabled the following buttons.
Settings > Additional Settings > Developer options
Consider making your route:
_files_manage:
pattern: /files/management/{project}/{user}
defaults: { _controller: AcmeTestBundle:File:manage }
since they are required fields. It will make your url's prettier, and be a bit easier to manage.
Your Controller would then look like
public function projectAction($project, $user)
You should be able to use chaining to execute the events in sequence, e.g.:
$('#target')
.bind('click',function(event) {
alert('Hello!');
})
.bind('click',function(event) {
alert('Hello again!');
})
.bind('click',function(event) {
alert('Hello yet again!');
});
I guess the below code is doing the same
$('#target')
.click(function(event) {
alert('Hello!');
})
.click(function(event) {
alert('Hello again!');
})
.click(function(event) {
alert('Hello yet again!');
});
Source: http://www.peachpit.com/articles/article.aspx?p=1371947&seqNum=3
TFM also says:
When an event reaches an element, all handlers bound to that event type for the element are fired. If there are multiple handlers registered, they will always execute in the order in which they were bound. After all handlers have executed, the event continues along the normal event propagation path.
You could use querySelector()
with attribute selector '[attribute="value"]'
, then affect css rule using .style
, as you can see in the example below:
document.querySelector('a[aria-expanded="true"]').style.backgroundColor = "#42DCA3";
_x000D_
<ul><li class="active">_x000D_
<a href="#3a" class="btn btn-default btn-lg" data-toggle="tab" aria-expanded="true"> <span class="network-name">Google+ with aria expanded true</span></a>_x000D_
</li>_x000D_
<li>_x000D_
<a href="#3a" class="btn btn-default btn-lg" data-toggle="tab" aria-expanded="false"> <span class="network-name">Google+ with aria expanded false</span></a>_x000D_
</li>_x000D_
</ul>
_x000D_
jQuery solution :
If you want to use a jQuery solution you could simply use css()
method :
$('a[aria-expanded="true"]').css('background-color','#42DCA3');
Hope this helps.
xDoc.LoadXML("<head><body><Inner> welcome </head> </Inner> <Outer> Bye</Outer>
</body></head>");
How about:
SELECT <column>, count(*)
FROM <table>
GROUP BY <column> HAVING COUNT(*) > 1;
To answer the example above, it would look like:
SELECT job_number, count(*)
FROM jobs
GROUP BY job_number HAVING COUNT(*) > 1;
In the Windows command prompt you can disable tab completion, by launching it thusly:
cmd.exe /f:off
Then the tab character will be echoed to the screen and work as you expect. Or you can disable the tab completion character, or modify what character is used for tab completion by modifying the registry.
The cmd.exe
help page explains it:
You can enable or disable file name completion for a particular invocation of CMD.EXE with the /F:ON or /F:OFF switch. You can enable or disable completion for all invocations of CMD.EXE on a machine and/or user logon session by setting either or both of the following REG_DWORD values in the registry using REGEDIT.EXE:
HKEY_LOCAL_MACHINE\Software\Microsoft\Command Processor\CompletionChar HKEY_LOCAL_MACHINE\Software\Microsoft\Command Processor\PathCompletionChar and/or HKEY_CURRENT_USER\Software\Microsoft\Command Processor\CompletionChar HKEY_CURRENT_USER\Software\Microsoft\Command Processor\PathCompletionChar
with the hex value of a control character to use for a particular function (e.g. 0x4 is Ctrl-D and 0x6 is Ctrl-F). The user specific settings take precedence over the machine settings. The command line switches take precedence over the registry settings.
If completion is enabled with the /F:ON switch, the two control characters used are Ctrl-D for directory name completion and Ctrl-F for file name completion. To disable a particular completion character in the registry, use the value for space (0x20) as it is not a valid control character.
Other answers explain how to insert a string at the beginning of another String
or StringBuilder
(or StringBuffer
).
However, strictly speaking, you cannot insert a string into the beginning of another one. Strings in Java are immutable1.
When you write:
String s = "Jam";
s = "Hello " + s;
you are actually causing a new String
object to be created that is the concatenation of "Hello " and "Jam". You are not actually inserting characters into an existing String
object at all.
1 - It is technically possible to use reflection to break abstraction on String
objects and mutate them ... even though they are immutable by design. But it is a really bad idea to do this. Unless you know that a String
object was created explicitly via new String(...)
it could be shared, or it could share internal state with other String
objects. Finally, the JVM spec clearly states that the behavior of code that uses reflection to change a final
is undefined. Mutation of String
objects is dangerous.
This error usually occurs when the IDE has a problem due to a crash or other failure and it still has a hold on the EXE, preventing the user (yourself) from overwriting / deleting the EXE during a rebuild.
from lemiorhan example i can solve with just change some line of lemiorhan's code use:
JSONObject json = new JSONObject(obj);
instead of this:
JSONObject json = (JSONObject) obj
so in my test code is :
Map item_sub2 = new LinkedHashMap();
item_sub2.put("name", "flare");
item_sub2.put("val1", "val1");
item_sub2.put("val2", "val2");
item_sub2.put("size",102);
JSONArray itemarray2 = new JSONArray();
itemarray2.add(item_sub2);
itemarray2.add(item_sub2);//just for test
itemarray2.add(item_sub2);//just for test
Map item_sub1 = new LinkedHashMap();
item_sub1.put("name", "flare");
item_sub1.put("val1", "val1");
item_sub1.put("val2", "val2");
item_sub1.put("children",itemarray2);
JSONArray itemarray = new JSONArray();
itemarray.add(item_sub1);
itemarray.add(item_sub1);//just for test
itemarray.add(item_sub1);//just for test
Map item_root = new LinkedHashMap();
item_root.put("name", "flare");
item_root.put("children",itemarray);
JSONObject json = new JSONObject(item_root);
System.out.println(json.toJSONString());
I just want to notice that the geneated code is offen the same if you use pre/post incrementation where the semantic (of pre/post) doesn't matter.
example:
pre.cpp:
#include <iostream>
int main()
{
int i = 13;
i++;
for (; i < 42; i++)
{
std::cout << i << std::endl;
}
}
post.cpp:
#include <iostream>
int main()
{
int i = 13;
++i;
for (; i < 42; ++i)
{
std::cout << i << std::endl;
}
}
_
$> g++ -S pre.cpp
$> g++ -S post.cpp
$> diff pre.s post.s
1c1
< .file "pre.cpp"
---
> .file "post.cpp"
I stumbled upon a similar problem as OP. Unfortunately the accepted answer did not work for me since the content of the collectionView
would not be centered properly. Therefore I came up with a different solution which only requires that all items in the collectionView
are of the same width, which seems to be the case in the question:
#define cellSize 90
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
float width = collectionView.frame.size.width;
float spacing = [self collectionView:collectionView layout:collectionViewLayout minimumInteritemSpacingForSectionAtIndex:section];
int numberOfCells = (width + spacing) / (cellSize + spacing);
int inset = (width + spacing - numberOfCells * (cellSize + spacing) ) / 2;
return UIEdgeInsetsMake(0, inset, 0, inset);
}
That code will ensure that the value returned by ...minimumInteritemSpacing...
will be the exact spacing between every collectionViewCell
and furthermore guarantee that the cells all together will be centered in the collectionView
Others have given pretty good answers as far as "standards" go, but I just wanted to add this... Is it possible that "User" (or "Users") is not actually a full description of the data held in the table? Not that you should get too crazy with table names and specificity, but perhaps something like "Widget_Users" (where "Widget" is the name of your application or website) would be more appropriate.
select * from employee_list order by salary desc limit 2;
I needed the following files for my implementation:
(though honestly, I'm not completely sure they are all necessary...) It's a little confusing because they are packaged that way. I needed to place them manually in my own "lib" folder and then add the references...
Maven always seems to download more than I need, so I always place libaries/dlls and things like that manually.
You can use String.Join
. If you have a List<string>
then you can call ToArray
first:
List<string> names = new List<string>() { "John", "Anna", "Monica" };
var result = String.Join(", ", names.ToArray());
In .NET 4 you don't need the ToArray
anymore, since there is an overload of String.Join
that takes an IEnumerable<string>
.
Results:
John, Anna, Monica
I think the best way is:
data: "{'Ids':['2','2']}"
To read this values Ids[0], Ids[1].
You can do it like this,
<input type="text" name="name" value="<?php echo $name;?>" />
But seen as you've taken it straight from user input, you want to sanitize it first so that nothing nasty is put into the output of your page.
<input type="text" name="name" value="<?php echo htmlspecialchars($name);?>" />
Here's a working function that I uses in one of my application.
This checks if item exit
let ifExist = (item, strings = [ '' ], position = 0) => {
// output into an array with empty string. Important just in case their is no item.
let output = [ '' ];
// check to see if the item that will be positioned exist.
if (item) {
// output should equal to array of strings.
output = strings;
// use splice in order to break the array.
// use positition param to state where to put the item
// and 0 is to not replace an index. Item is the actual item we are placing at the prescribed position.
output.splice(position, 0, item);
}
//empty string is so we do not concatenate with comma or anything else.
return output.join("");
};
And then I call it below.
ifExist("friends", [ ' ( ', ' )' ], 1)} // output: ( friends )
ifExist("friends", [ ' - '], 1)} // output: - friends
ifExist("friends", [ ':'], 0)} // output: friends:
XenElement's answer is spot on.
The above can be done in interface builder too by right-clicking on the UITextField and dragging the "Editing Changed" send event to your subclass unit.
By default, py.test
captures the result of standard out so that it can control how it prints it out. If it didn't do this, it would spew out a lot of text without the context of what test printed that text.
However, if a test fails, it will include a section in the resulting report that shows what was printed to standard out in that particular test.
For example,
def test_good():
for i in range(1000):
print(i)
def test_bad():
print('this should fail!')
assert False
Results in the following output:
>>> py.test tmp.py
============================= test session starts ==============================
platform darwin -- Python 2.7.6 -- py-1.4.20 -- pytest-2.5.2
plugins: cache, cov, pep8, xdist
collected 2 items
tmp.py .F
=================================== FAILURES ===================================
___________________________________ test_bad ___________________________________
def test_bad():
print('this should fail!')
> assert False
E assert False
tmp.py:7: AssertionError
------------------------------- Captured stdout --------------------------------
this should fail!
====================== 1 failed, 1 passed in 0.04 seconds ======================
Note the Captured stdout
section.
If you would like to see print
statements as they are executed, you can pass the -s
flag to py.test
. However, note that this can sometimes be difficult to parse.
>>> py.test tmp.py -s
============================= test session starts ==============================
platform darwin -- Python 2.7.6 -- py-1.4.20 -- pytest-2.5.2
plugins: cache, cov, pep8, xdist
collected 2 items
tmp.py 0
1
2
3
... and so on ...
997
998
999
.this should fail!
F
=================================== FAILURES ===================================
___________________________________ test_bad ___________________________________
def test_bad():
print('this should fail!')
> assert False
E assert False
tmp.py:7: AssertionError
====================== 1 failed, 1 passed in 0.02 seconds ======================
The output looks correct to me:
Invalid JavaScript code: sun.org.mozilla.javascript.internal.EvaluatorException: missing } after property list (<Unknown source>) in <Unknown source>; at line number 1
I think Invalid Javascript code: ..
is the start of the exception message.
Normally the stacktrace isn't returned with the message:
try {
throw new RuntimeException("hu?\ntrace-line1\ntrace-line2");
} catch (Exception e) {
System.out.println(e.getMessage()); // prints "hu?"
}
So maybe the code you are calling catches an exception and rethrows a ScriptException
. In this case maybe e.getCause().getMessage()
can help you.
If we have to answer the question: String is a reference type and it behaves as a reference. We pass a parameter that holds a reference to, not the actual string. The problem is in the function:
public static void TestI(string test)
{
test = "after passing";
}
The parameter test
holds a reference to the string but it is a copy. We have two variables pointing to the string. And because any operations with strings actually create a new object, we make our local copy to point to the new string. But the original test
variable is not changed.
The suggested solutions to put ref
in the function declaration and in the invocation work because we will not pass the value of the test
variable but will pass just a reference to it. Thus any changes inside the function will reflect the original variable.
I want to repeat at the end: String is a reference type but since its immutable the line test = "after passing";
actually creates a new object and our copy of the variable test
is changed to point to the new string.
10 * * * Sun
Position 1 for minutes, allowed values are 1-60
position 2 for hours, allowed values are 1-24
position 3 for day of month ,allowed values are 1-31
position 4 for month ,allowed values are 1-12
position 5 for day of week ,allowed values are 1-7 or and the day starts at Monday.
Moment is really a good one to resolve it. I don't see reason to add complexity just to check date... take a look on moment : http://momentjs.com/
HTML :
<input class="form-control" id="date" name="date" onchange="isValidDate(this);" placeholder="DD/MM/YYYY" type="text" value="">
Script :
function isValidDate(dateString) {
var dateToValidate = dateString.value
var isValid = moment(dateToValidate, 'MM/DD/YYYY',true).isValid()
if (isValid) {
dateString.style.backgroundColor = '#FFFFFF';
} else {
dateString.style.backgroundColor = '#fba';
}
};
If it is bound to a Datasource it will throw an error using ListBox1.Items.Clear();
In that case you will have to clear the Datasource instead. e.g., if it is filled with a Datatable:
_dt.Clear(); //<-----Here's the Listbox emptied.
_dt = _dbHelper.dtFillDataTable(_dt, strSQL);
lbStyles.DataSource = _dt;
lbStyles.DisplayMember = "YourDisplayMember";
lbStyles.ValueMember = "YourValueMember";
I tried to implement the result of Nick which is:
$('.selectorUsedToCreateTheDialog').dialog('option', 'title', 'My New title');
But that didn't work for me because i had multiple dialogs on 1 page. In such a situation it will only set the title correct the first time. Trying to staple commands did not work:
$("#modal_popup").html(data);
$("#modal_popup").dialog('option', 'title', 'My New Title');
$("#modal_popup").dialog({ width: 950, height: 550);
I fixed this by adding the title to the javascript function arguments of each dialog on the page:
function show_popup1() {
$("#modal_popup").html(data);
$("#modal_popup").dialog({ width: 950, height: 550, title: 'Popup Title of my First Dialog'});
}
function show_popup2() {
$("#modal_popup").html(data);
$("#modal_popup").dialog({ width: 950, height: 550, title: 'Popup Title of my Other Dialog'});
}
While my answer isn't 100% applicable, but most search engines find this as the first hit, I decided to post it nontheless:
If you're using PrimeFaces (or some similar API) p:commandButton
or p:commandLink
, chances are that you have forgotten to explicitly add process="@this"
to your command components.
As the PrimeFaces User's Guide states in section 3.18, the defaults for process
and update
are both @form
, which pretty much opposes the defaults you might expect from plain JSF f:ajax
or RichFaces, which are execute="@this"
and render="@none"
respectively.
Just took me a looong time to find out. (... and I think it's rather unclever to use defaults that are different from JSF!)
From Linux you can use 'swaks' which is available as an official packages on many distros including Debian/Ubuntu and Redhat/CentOS on EPEL:
swaks -f [email protected] -t [email protected] \
--server mail.example.com
To comapre dates of string format (mm-dd-yyyy).
var job_start_date = "10-1-2014"; // Oct 1, 2014
var job_end_date = "11-1-2014"; // Nov 1, 2014
job_start_date = job_start_date.split('-');
job_end_date = job_end_date.split('-');
var new_start_date = new Date(job_start_date[2],job_start_date[0],job_start_date[1]);
var new_end_date = new Date(job_end_date[2],job_end_date[0],job_end_date[1]);
if(new_end_date <= new_start_date) {
// your code
}
Java's substring
method fails when you try and get a substring starting at an index which is longer than the string.
An easy alternative is to use Apache Commons StringUtils.substring
:
public static String substring(String str, int start)
Gets a substring from the specified String avoiding exceptions.
A negative start position can be used to start n characters from the end of the String.
A null String will return null. An empty ("") String will return "".
StringUtils.substring(null, *) = null
StringUtils.substring("", *) = ""
StringUtils.substring("abc", 0) = "abc"
StringUtils.substring("abc", 2) = "c"
StringUtils.substring("abc", 4) = ""
StringUtils.substring("abc", -2) = "bc"
StringUtils.substring("abc", -4) = "abc"
Parameters:
str - the String to get the substring from, may be null
start - the position to start from, negative means count back from the end of the String by this many characters
Returns:
substring from start position, null if null String input
Note, if you can't use Apache Commons lib for some reason, you could just grab the parts you need from the source
// Substring
//-----------------------------------------------------------------------
/**
* <p>Gets a substring from the specified String avoiding exceptions.</p>
*
* <p>A negative start position can be used to start {@code n}
* characters from the end of the String.</p>
*
* <p>A {@code null} String will return {@code null}.
* An empty ("") String will return "".</p>
*
* <pre>
* StringUtils.substring(null, *) = null
* StringUtils.substring("", *) = ""
* StringUtils.substring("abc", 0) = "abc"
* StringUtils.substring("abc", 2) = "c"
* StringUtils.substring("abc", 4) = ""
* StringUtils.substring("abc", -2) = "bc"
* StringUtils.substring("abc", -4) = "abc"
* </pre>
*
* @param str the String to get the substring from, may be null
* @param start the position to start from, negative means
* count back from the end of the String by this many characters
* @return substring from start position, {@code null} if null String input
*/
public static String substring(final String str, int start) {
if (str == null) {
return null;
}
// handle negatives, which means last n characters
if (start < 0) {
start = str.length() + start; // remember start is negative
}
if (start < 0) {
start = 0;
}
if (start > str.length()) {
return EMPTY;
}
return str.substring(start);
}
I had the same problem when trying to use a token with Github.
The only syntax that has worked for me with Python 3 is:
import requests
myToken = '<token>'
myUrl = '<website>'
head = {'Authorization': 'token {}'.format(myToken)}
response = requests.get(myUrl, headers=head)
Here's some custom modal code that gives the modal states more explicitly named classes:
$('.modal').on('show.bs.modal', function(e)
{
e.currentTarget.classList.add("modal-fading-in");
e.currentTarget.classList.remove("modal-fading-out");
e.currentTarget.classList.remove("modal-hidden");
e.currentTarget.classList.remove("modal-visible");
});
$('.modal').on('hide.bs.modal', function(e)
{
e.currentTarget.classList.add("modal-fading-out");
e.currentTarget.classList.remove("modal-fading-in");
e.currentTarget.classList.remove("modal-hidden");
e.currentTarget.classList.remove("modal-visible");
});
$('.modal').on('hidden.bs.modal', function(e)
{
e.currentTarget.classList.add("modal-hidden");
e.currentTarget.classList.remove("modal-fading-in");
e.currentTarget.classList.remove("modal-fading-out");
e.currentTarget.classList.remove("modal-visible");
});
$('.modal').on('shown.bs.modal', function(e)
{
e.currentTarget.classList.add("modal-visible");
e.currentTarget.classList.remove("modal-fading-in");
e.currentTarget.classList.remove("modal-fading-out");
e.currentTarget.classList.remove("modal-hidden");
});
You can then easily target the modal's various states with both JS and CSS.
JS example:
if (document.getElementById('myModal').hasClass('modal-fading-in'))
{
console.log("The modal is currently fading in. Please wait.");
}
CSS example:
.modal-fading-out, .modal-hidden
{
opacity: 0.5;
}
Well unless I misunderstand you can just use the onChange
attribute:
<input type="text" onChange="return bar()">
Note: in FF 3 (at least) this is not called until some the user has confirmed they are changed either by clicking away from the element, clicking enter, or other.
For somebody who is interested in a such map because you want to reduce footprint of autoboxing in Java of wrappers over primitives types, I would recommend to use Eclipse collections. Trove isn't supported any more, and I believe it is quite unreliable library in this sense (though it is quite popular anyway) and couldn't be compared with Eclipse collections.
import org.eclipse.collections.impl.map.mutable.primitive.IntObjectHashMap;
public class Check {
public static void main(String[] args) {
IntObjectHashMap map = new IntObjectHashMap();
map.put(5,"It works");
map.put(6,"without");
map.put(7,"boxing!");
System.out.println(map.get(5));
System.out.println(map.get(6));
System.out.println(map.get(7));
}
}
In this example above IntObjectHashMap.
As you need int->object mapping, also consider usage of YourObjectType[]
array or List<YourObjectType>
and access values by index, as map is, by nature, an associative array with int type as index.
Apache Commons Lang's replaceEach method may come in handy dependeding on your specific needs. You can easily use it to replace placeholders by name with this single method call:
StringUtils.replaceEach("There's an incorrect value '%(value)' in column # %(column)",
new String[] { "%(value)", "%(column)" }, new String[] { x, y });
Given some input text, this will replace all occurrences of the placeholders in the first string array with the corresponding values in the second one.
You might be looking for this Microsoft Ajax Content Delivery Network So you could just add
<script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js" type="text/javascript"></script>
To your aspx page.
As you have define the id in int type at the database creation, you have to use the same data type in the model class too. And as you have defined the id to auto increment in the database, you have to mention it in the model class by passing value 'GenerationType.AUTO' into the attribute 'strategy' within the annotation @GeneratedValue. Then the code becomes as below.
@Entity
public class Operator{
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private int id;
private String username;
private String password;
private Integer active;
//Getters and setters...
}
I would suggest you use a Set,
Sets only allow unique entries, which automatically solves your problem.
Sets can be declared like so:
const baz = new Set(["Foo","Bar"])
The unresponsive script dialog box shows when some javascript thread takes too long too complete. Editing the registry could work, but you would have to do it on all client machines. You could use a "recursive closure" as follows to alleviate the problem. It's just a coding structure in which allows you to take a long running for loop and change it into something that does some work, and keeps track where it left off, yielding to the browser, then continuing where it left off until we are done.
Figure 1, Add this Utility Class RepeatingOperation to your javascript file. You will not need to change this code:
RepeatingOperation = function(op, yieldEveryIteration) {
//keeps count of how many times we have run heavytask()
//before we need to temporally check back with the browser.
var count = 0;
this.step = function() {
//Each time we run heavytask(), increment the count. When count
//is bigger than the yieldEveryIteration limit, pass control back
//to browser and instruct the browser to immediately call op() so
//we can pick up where we left off. Repeat until we are done.
if (++count >= yieldEveryIteration) {
count = 0;
//pass control back to the browser, and in 1 millisecond,
//have the browser call the op() function.
setTimeout(function() { op(); }, 1, [])
//The following return statement halts this thread, it gives
//the browser a sigh of relief, your long-running javascript
//loop has ended (even though technically we havn't yet).
//The browser decides there is no need to alarm the user of
//an unresponsive javascript process.
return;
}
op();
};
};
Figure 2, The following code represents your code that is causing the 'stop running this script' dialog because it takes so long to complete:
process10000HeavyTasks = function() {
var len = 10000;
for (var i = len - 1; i >= 0; i--) {
heavytask(); //heavytask() can be run about 20 times before
//an 'unresponsive script' dialog appears.
//If heavytask() is run more than 20 times in one
//javascript thread, the browser informs the user that
//an unresponsive script needs to be dealt with.
//This is where we need to terminate this long running
//thread, instruct the browser not to panic on an unresponsive
//script, and tell it to call us right back to pick up
//where we left off.
}
}
Figure 3. The following code is the fix for the problematic code in Figure 2. Notice the for loop is replaced with a recursive closure which passes control back to the browser every 10 iterations of heavytask()
process10000HeavyTasks = function() {
var global_i = 10000; //initialize your 'for loop stepper' (i) here.
var repeater = new this.RepeatingOperation(function() {
heavytask();
if (--global_i >= 0){ //Your for loop conditional goes here.
repeater.step(); //while we still have items to process,
//run the next iteration of the loop.
}
else {
alert("we are done"); //when this line runs, the for loop is complete.
}
}, 10); //10 means process 10 heavytask(), then
//yield back to the browser, and have the
//browser call us right back.
repeater.step(); //this command kicks off the recursive closure.
};
Adapted from this source:
Please follow a very simple step. You just have to comment the following line of in the app\http\kernel.php
and not app\kernel.php
file:
\App\Http\Middleware\VerifyCsrfToken::class,
I hope, it will solve your problem, and let me know if its not working.
If you are using JAX-WS on JDK6, use the following properties:
com.sun.xml.internal.ws.connect.timeout
com.sun.xml.internal.ws.request.timeout
I just created a simple timer using the MVP pattern (however it may be overkill for that simple project). It has quit, start/pause and a stop button. Time is displayed in HH:MM:SS format. Time counting is implemented using a thread that is running several times a second and the difference between the time the timer has started and the current time.
Since java 7 you can the java.nio package to achieve the same result:
Path dir = ...;
List<File> files = new ArrayList<>();
try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir, "*.{java,class,jar}")) {
for (Path entry: stream) {
files.add(entry.toFile());
}
return files;
} catch (IOException x) {
throw new RuntimeException(String.format("error reading folder %s: %s",
dir,
x.getMessage()),
x);
}
You can use this function:
def saveListToFile(listname, pathtosave):
file1 = open(pathtosave,"w")
for i in listname:
file1.writelines("{}\n".format(i))
file1.close()
# to save:
saveListToFile(list, path)
According to my tests with Chrome:
If you set a number
input to a Number, then it works fine.
If you set a number
input to a String that contains nothing but a number, then it works fine.
If you set a number
input to a String that contains a number and some whitespace, then it blanks the input.
You probably have a space or a new line after the data in the server response that you actually care about.
Use document.getElementById("points").value = parseInt(request.responseText, 10);
instead.
I don't know why but to change the text color of the labels you need to divide the value you want with 255, because it works only until 1.0.
For example a dark blue color:
label.textColor = UIColor(red: 0.0, green: 0.004, blue: 0.502, alpha: 1.0)
From the Java JDBC tutorial:
In previous versions of JDBC, to obtain a connection, you first had to initialize your JDBC driver by calling the method
Class.forName
. Any JDBC 4.0 drivers that are found in your class path are automatically loaded. (However, you must manually load any drivers prior to JDBC 4.0 with the methodClass.forName
.)
So, if you're using the Oracle 11g (11.1) driver with Java 1.6, you don't need to call Class.forName
. Otherwise, you need to call it to initialise the driver.
to insert values for a particular column with other columns remain same:-
INSERT INTO `table_name`(col1,col2,col3)
VALUES (1,'val1',0),(1,'val2',0),(1,'val3',0)
This simple one worked for me
private RadioButton lastCheckedRB = null;
...
@Override
public void onBindViewHolder(final CoachListViewHolder holder, final int position) {
holder.priceRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
RadioButton checked_rb = (RadioButton) group.findViewById(checkedId);
if (lastCheckedRB != null && lastCheckedRB != checked_rb) {
lastCheckedRB.setChecked(false);
}
//store the clicked radiobutton
lastCheckedRB = checked_rb;
}
});
This will work, and if you need where statement you can add it as parameter.
class GenericDAOWithJPA<T, ID extends Serializable> {
.......
public List<T> findAll() {
return entityManager.createQuery("Select t from " + persistentClass.getSimpleName() + " t").getResultList();
}
}
depending on who is going to be using your database, for example African names will do with varchar(20) for last name and first name separated. however it is different from nation to nation but for the sake saving your database resources and memory, separate last name and first name fields and use varchar(30) think that will work.
I had some troubles with provisioning when trying to login as root, even with PermitRootLogin yes
. I made it so only the vagrant ssh
command is affected:
# Login as root when doing vagrant ssh
if ARGV[0]=='ssh'
config.ssh.username = 'root'
end
Make sure you've set your locale settings right before running the script from the shell, e.g.
$ locale -a | grep "^en_.\+UTF-8"
en_GB.UTF-8
en_US.UTF-8
$ export LC_ALL=en_GB.UTF-8
$ export LANG=en_GB.UTF-8
Docs: man locale
, man setlocale
.
The assert computer statement is analogous to the statement make sure in English.
The problem is that your ui
property uses a forward declaration of class Ui::MainWindowClass
, hence the "incomplete type" error.
Including the header file in which this class is declared will fix the problem.
EDIT
Based on your comment, the following code:
namespace Ui
{
class MainWindowClass;
}
does NOT declare a class. It's a forward declaration, meaning that the class will exist at some point, at link time.
Basically, it just tells the compiler that the type will exist, and that it shouldn't warn about it.
But the class has to be defined somewhere.
Note this can only work if you have a pointer to such a type.
You can't have a statically allocated instance of an incomplete type.
So either you actually want an incomplete type, and then you should declare your ui
member as a pointer:
namespace Ui
{
// Forward declaration - Class will have to exist at link time
class MainWindowClass;
}
class MainWindow : public QMainWindow
{
private:
// Member needs to be a pointer, as it's an incomplete type
Ui::MainWindowClass * ui;
};
Or you want a statically allocated instance of Ui::MainWindowClass
, and then it needs to be declared.
You can do it in another header file (usually, there's one header file per class).
But simply changing the code to:
namespace Ui
{
// Real class declaration - May/Should be in a specific header file
class MainWindowClass
{};
}
class MainWindow : public QMainWindow
{
private:
// Member can be statically allocated, as the type is complete
Ui::MainWindowClass ui;
};
will also work.
Note the difference between the two declarations. First uses a forward declaration, while the second one actually declares the class (here with no properties nor methods).
Let's break >> /dev/null 2>&1
statement into parts:
Part 1: >>
output redirection
This is used to redirect the program output and append the output at the end of the file. More...
Part 2: /dev/null
special file
This is a Pseudo-devices special file.
Command ls -l /dev/null
will give you details of this file:
crw-rw-rw-. 1 root root 1, 3 Mar 20 18:37 /dev/null
Did you observe crw
? Which means it is a pseudo-device file which is of character-special-file type that provides serial access.
/dev/null
accepts and discards all input; produces no output (always returns an end-of-file indication on a read). Reference: Wikipedia
Part 3: 2>&1
file descriptor
Whenever you execute a program, the operating system always opens three files, standard input, standard output, and standard error as we know whenever a file is opened, the operating system (from kernel) returns a non-negative integer called a file descriptor. The file descriptor for these files are 0, 1, and 2, respectively.
So 2>&1
simply says redirect standard error to standard output.
&
means whatever follows is a file descriptor, not a filename.
In short, by using this command you are telling your program not to shout while executing.
What is the importance of using 2>&1
?
If you don't want to produce any output, even in case of some error produced in the terminal. To explain more clearly, let's consider the following example:
$ ls -l > /dev/null
For the above command, no output was printed in the terminal, but what if this command produces an error:
$ ls -l file_doesnot_exists > /dev/null
ls: cannot access file_doesnot_exists: No such file or directory
Despite I'm redirecting output to /dev/null
, it is printed in the terminal. It is because we are not redirecting error output to /dev/null
, so in order to redirect error output as well, it is required to add 2>&1
:
$ ls -l file_doesnot_exists > /dev/null 2>&1
I know this question is pretty old but just want to share my findings.
My laptop is able to handle program which spawns 25,000
threads and all those threads write some data in MySql database at regular interval of 2 seconds.
I ran this program with 10,000 threads
for 30 minutes continuously
then also my system was stable and I was able to do other normal operations like browsing, opening, closing other programs, etc.
With 25,000 threads
system slows down
but it remains responsive.
With 50,000 threads
system stopped responding
instantly and I had to restart my system manually.
My system details are as follows :
Processor : Intel core 2 duo 2.13 GHz
RAM : 4GB
OS : Windows 7 Home Premium
JDK Version : 1.6
Before running I set jvm argument -Xmx2048m
.
Hope it helps.
You say
The string is exactly what was written to the file (with the addition of a "\0" at the end, but I don't think that even does anything).
In fact, it does do something (it causes your code to throw a FormatException
:"Invalid character in a Base-64 string") because the Convert.FromBase64String
does not consider "\0" to be a valid Base64 character.
byte[] data1 = Convert.FromBase64String("AAAA\0"); // Throws exception
byte[] data2 = Convert.FromBase64String("AAAA"); // Works
Solution: Get rid of the zero termination. (Maybe call .Trim("\0")
)
Notes:
The MSDN docs for Convert.FromBase64String
say it will throw a FormatException
when
The length of s, ignoring white space characters, is not zero or a multiple of 4.
-or-
The format of s is invalid. s contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters.
and that
The base 64 digits in ascending order from zero are the uppercase characters 'A' to 'Z', lowercase characters 'a' to 'z', numerals '0' to '9', and the symbols '+' and '/'.
check this fiddle , and if you want to move the overlapped div you set its position to absolute
then change it's top
and left
values
Toastr is a very nice component, and you can show messages with theses commands:
// for success - green box
toastr.success('Success messages');
// for errors - red box
toastr.error('errors messages');
// for warning - orange box
toastr.warning('warning messages');
// for info - blue box
toastr.info('info messages');
If you want to provide a title on the toastr message, just add a second argument:
// for info - blue box
toastr.success('The process has been saved.', 'Success');
you also can change the default behaviour using something like this:
toastr.options.timeOut = 3000; // 3s
See more on the github of the project.
A sample of use:
$(document).ready(function() {
// show when page load
toastr.info('Page Loaded!');
$('#linkButton').click(function() {
// show when the button is clicked
toastr.success('Click Button');
});
});
and a html:
<a id='linkButton'>Show Message</a>
Try this one. It is working for me.
handler.postDelayed(new Runnable() {
@Override
public void run() {
// Set up the projection (we only need the ID)
String[] projection = { MediaStore.Images.Media._ID };
// Match on the file path
String selection = MediaStore.Images.Media.DATA + " = ?";
String[] selectionArgs = new String[] { imageFile.getAbsolutePath() };
// Query for the ID of the media matching the file path
Uri queryUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
ContentResolver contentResolver = getActivity().getContentResolver();
Cursor c = contentResolver.query(queryUri, projection, selection, selectionArgs, null);
if (c != null) {
if (c.moveToFirst()) {
// We found the ID. Deleting the item via the content provider will also remove the file
long id = c.getLong(c.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
Uri deleteUri = ContentUris.withAppendedId(queryUri, id);
contentResolver.delete(deleteUri, null, null);
} else {
// File not found in media store DB
}
c.close();
}
}
}, 5000);
Imagine you have this array below:
var arr = [1,2,3,4,5];
Javascript (new and older browsers):
function isArray(arr) {
return arr.constructor.toString().indexOf("Array") > -1;
}
or
function isArray(arr) {
return arr instanceof Array;
}
or
function isArray(arr) {
return Object.prototype.toString.call(arr) === '[object Array]';
}
then call it like this:
isArray(arr);
Javascript (IE9+, Ch5+, FF4+, Saf5+, Opera10.5+)
Array.isArray(arr);
jQuery:
$.isArray(arr);
Angular:
angular.isArray(arr);
Underscore and Lodash:
_.isArray(arr);
i found that this works for me
<input type="button" value="click me" onclick="window.open('http://someurl', 'targetname');">
Just installed MongoDB via Homebrew. At the end of the installation console, you can see an output as follows:
To start mongodb:
brew services start mongodb
Or, if you don't want/need a background service you can just run:
mongod --config /usr/local/etc/mongod.conf
So, brew services start mongodb, managed to run MongoDB as a service for me.
This worked for my purposes. Pretty basic and simple, but it did what I needed (which was to get a personal photo of mine onto the internet so I could use its URL).
Go to photos.google.com and open any image that you wish to embed in your website.
Tap the Share Icon and then choose "Get Link" to generate a shareable link for that image.
Go to j.mp/EmbedGooglePhotos, paste that link and it will instantly generate the embed code for that picture.
Open your website template, paste the generated code and save. The image will now serve directly from your Google Photos account.
Check this video tutorial out if you have trouble.
The show()
method only affects the display
CSS setting. If you want to set the visibility you need to do it directly. Also, the .load_button
element is a button and does not raise a submit
event. You would need to change your selector to the form
for that to work:
$('#login_form').submit(function() {
$('#gif').css('visibility', 'visible');
});
Also note that return true;
is redundant in your logic, so it can be removed.
Instead of using a Label
use a text input:
<script type="text/javascript">
onChange = function(ctrl) {
var txt = document.getElementById("<%= txtResult.ClientID %>");
if (txt){
txt.value = ctrl.value;
}
}
</script>
<asp:TextBox ID="txtTest" runat="server" onchange="onChange(this);" />
<!-- pseudo label that will survive postback -->
<input type="text" id="txtResult" runat="server" readonly="readonly" tabindex="-1000" style="border:0px;background-color:transparent;" />
<asp:Button ID="btnTest" runat="server" Text="Test" />
Use below function in PySpark to convert datatype into your required datatype. Here I'm converting all the date datatype into the Timestamp column.
def change_dtype(df):
for name, dtype in df.dtypes:
if dtype == "date":
df = df.withColumn(name, col(name).cast('timestamp'))
return df
If you want to import the promise based version of fs
as an ES module you can do:
import { promises as fs } from 'fs'
await fs.writeFile(...)
As soon as node v14 is released (see this PR), you can also use
import { writeFile } from 'fs/promises'
Yes, ReSharper does this. Right click on your solution and selection "Find Code Issues". One of the results is "Unused Symbols". This will show you classes, methods, etc., that aren't used.
You could subscribe for the onkeypress event:
<input type="text" class="textfield" value="" id="extra7" name="extra7" onkeypress="return isNumber(event)" />
and then define the isNumber
function:
function isNumber(evt) {
evt = (evt) ? evt : window.event;
var charCode = (evt.which) ? evt.which : evt.keyCode;
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
return false;
}
return true;
}
You can see it in action here.
I suggest this discriminative question:
Is the open-source tool necessary in your process of making money?
You can do this with JSONP like this:
function insertReply(content) {
document.getElementById('output').innerHTML = content;
}
// create script element
var script = document.createElement('script');
// assing src with callback name
script.src = 'http://url.to.json?callback=insertReply';
// insert script to document and load content
document.body.appendChild(script);
But source must be aware that you want it to call function passed as callback parameter to it.
With google API it would look like this:
function insertReply(content) {
document.getElementById('output').innerHTML = content;
}
// create script element
var script = document.createElement('script');
// assing src with callback name
script.src = 'https://www.googleapis.com/freebase/v1/text/en/bob_dylan?callback=insertReply';
// insert script to document and load content
document.body.appendChild(script);
Check how data looks like when you pass callback to google api: https://www.googleapis.com/freebase/v1/text/en/bob_dylan?callback=insertReply
Here is quite good explanation of JSONP: http://en.wikipedia.org/wiki/JSONP
When you create a repository in bitbucket.org, it gives you instructions on how to set up your local directory. Chances are, you just forgot to run the code:
git remote add origin https://[email protected]/username/reponame.git
In my examples I use the 'b' flag ('wb', 'rb') when opening the files because you said you wanted to read bytes. The 'b' flag tells Python not to interpret end-of-line characters which can differ between operating systems. If you are reading text, then omit the 'b' and use 'w' and 'r' respectively.
This reads the entire file in one chunk using the "simplest" Python code. The problem with this approach is that you could run out memory when reading a large file:
ifile = open(input_filename,'rb')
ofile = open(output_filename, 'wb')
ofile.write(ifile.read())
ofile.close()
ifile.close()
This example is refined to read 1MB chunks to ensure it works for files of any size without running out of memory:
ifile = open(input_filename,'rb')
ofile = open(output_filename, 'wb')
data = ifile.read(1024*1024)
while data:
ofile.write(data)
data = ifile.read(1024*1024)
ofile.close()
ifile.close()
This example is the same as above but leverages using with to create a context. The advantage of this approach is that the file is automatically closed when exiting the context:
with open(input_filename,'rb') as ifile:
with open(output_filename, 'wb') as ofile:
data = ifile.read(1024*1024)
while data:
ofile.write(data)
data = ifile.read(1024*1024)
See the following:
For future reference, I had the same problem
"warning: Skipping unreadable file"
under Linux. The reason was that I love using Tab-completing and in gnuplot this added a whitespace at the end that I did not really notice
gnuplot> plot "./datafile.txt "
The following worked for me (tested on react native 0.38
and 0.40
):
npm install -g ios-deploy
# Run on a connected device, e.g. Max's iPhone:
react-native run-ios --device "Max's iPhone"
If you try to run run-ios
, you will see that the script recommends to do npm install -g ios-deploy
when it reach install step after building.
While the documentation on the various commands that react-native offers is a little sketchy, it is worth going to react-native/local-cli. There, you can see all the commands available and the code that they run - you can thus work out what switches are available for undocumented commands.
The issue is that you are serializing your bean with a custom Gson
object while the application is attempting to deserialize your JSON with a Jackson ObjectMapper
(within MappingJackson2HttpMessageConverter
).
If you open up your server logs, you should see something like
Exception in thread "main" com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not construct instance of java.util.Date from String value '2013-34-10-10:34:31': not a valid representation (error: Failed to parse Date value '2013-34-10-10:34:31': Can not parse date "2013-34-10-10:34:31": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd"))
at [Source: java.io.StringReader@baea1ed; line: 1, column: 20] (through reference chain: com.spring.Bean["publicationDate"])
among other stack traces.
One solution is to set your Gson
date format to one of the above (in the stacktrace).
The alternative is to register your own MappingJackson2HttpMessageConverter
by configuring your own ObjectMapper
to have the same date format as your Gson
.
This should work as well.
#include <ctype.h>
#include <string.h>
template<typename T = unsigned int>
T Hex2Int(const char* const Hexstr, bool* Overflow)
{
if (!Hexstr)
return false;
if (Overflow)
*Overflow = false;
auto between = [](char val, char c1, char c2) { return val >= c1 && val <= c2; };
size_t len = strlen(Hexstr);
T result = 0;
for (size_t i = 0, offset = sizeof(T) << 3; i < len && (int)offset > 0; i++)
{
if (between(Hexstr[i], '0', '9'))
result = result << 4 ^ Hexstr[i] - '0';
else if (between(tolower(Hexstr[i]), 'a', 'f'))
result = result << 4 ^ tolower(Hexstr[i]) - ('a' - 10); // Remove the decimal part;
offset -= 4;
}
if (((len + ((len % 2) != 0)) << 2) > (sizeof(T) << 3) && Overflow)
*Overflow = true;
return result;
}
The 'Overflow' parameter is optional, so you can leave it NULL.
Example:
auto result = Hex2Int("C0ffee", NULL);
auto result2 = Hex2Int<long>("DeadC0ffe", NULL);
Remi Forax rule is You don't design with Abstract classes. You design your app with interfaces. Watever is the version of Java, whatever is the language. It is backed by the Interface segregation principle in SOLID principles.
You can later use Abstract classes to factorize code. Now with Java 8 you can do it directly in the interface. This is a facility, not more.
This is the configuration that I use, which works fine, it is based on XML + JaninoEventEvaluator (requires the Janino library to be added to Classpath)
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%date | [%-5level] in [%file:%line] - %msg %n</pattern>
</encoder>
<filter class="ch.qos.logback.core.filter.EvaluatorFilter">
<evaluator class="ch.qos.logback.classic.boolex.JaninoEventEvaluator">
<expression>
level <= INFO
</expression>
</evaluator>
<OnMismatch>DENY</OnMismatch>
<OnMatch>NEUTRAL</OnMatch>
</filter>
</appender>
<appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
<target>System.err</target>
<encoder>
<pattern>%date | [%-5level] in [%file:%line] - %msg %n</pattern>
</encoder>
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>WARN</level>
</filter>
</appender>
<root level="DEBUG">
<appender-ref ref="STDOUT" />
<appender-ref ref="STDERR" />
</root>
</configuration>
try this
<?php
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
?>
UPDATE Sept 2015
This answer continues to get upvotes, so I'm going to leave it here since it seems to be helpful to some people, but please check out the other answers from @reexmonkey and @Pressacco first. They may provide better results.
ORIGINAL ANSWER
Give this a shot:
That should cause those messages to disappear.
I saved my web.xsd in the root of my web folder (which might not be the best place for it, but just for demonstration purposes) and my Schemas property looks like this:
"C:\Program Files (x86)\Microsoft Visual Studio 10.0\xml\Schemas\DotNetConfig.xsd" "Web.xsd"
You can use this for getting current and log times:
#!/bin/bash
log="log_file_name"
while read line
do
current_hours=`date | awk 'BEGIN{FS="[ :]+"}; {print $4}'`
current_minutes=`date | awk 'BEGIN{FS="[ :]+"}; {print $5}'`
current_seconds=`date | awk 'BEGIN{FS="[ :]+"}; {print $6}'`
log_file_hours=`echo $line | awk 'BEGIN{FS="[ [/:]+"}; {print $7}'`
log_file_minutes=`echo $line | awk 'BEGIN{FS="[ [/:]+"}; {print $8}'`
log_file_seconds=`echo $line | awk 'BEGIN{FS="[ [/:]+"}; {print $9}'`
done < $log
And compare log_file_*
and current_*
variables.
If you add the following attribute to your activity's manifest definition, it will completely suppress the keyboard from popping when your activity opens. Hopefully this helps:
(Add to your Activity's manifest definition):
android:windowSoftInputMode="stateHidden"
Here are more code examples that will produce the argument null exception:
List<Myobj> myList = null;
//from this point on, any linq statement you perform on myList will throw an argument null exception
myList.ToList();
myList.GroupBy(m => m.Id);
myList.Count();
myList.Where(m => m.Id == 0);
myList.Select(m => m.Id == 0);
//etc...
i'm not sure if i understand you, but to query the source code of your triggers, procedures, package and functions you can try with the "user_source" table.
select * from user_source
var theDiff24 = (b-a).Hours
You can use the built-in forEach
function for arrays.
Like this:
//this sets all product descriptions to a max length of 10 characters
data.products.forEach( (element) => {
element.product_desc = element.product_desc.substring(0,10);
});
Your version wasn't wrong though. It should look more like this:
for(let i=0; i<data.products.length; i++){
console.log(data.products[i].product_desc); //use i instead of 0
}
It appears that SQL Server 2008 R2 can be downloaded with or without the management tools. I honestly have NO IDEA why someone would not want the management tools. But either way, the options are here:
http://www.microsoft.com/sqlserver/en/us/editions/express.aspx
and the one for 64 bit WITH the management tools (management studio) is here:
http://www.microsoft.com/sqlserver/en/us/editions/express.aspx
From the first link I presented, the 3rd and 4th include the management studio for 32 and 64 bit respectively.
It seems that the only correct answer here so far has been given by romnex: "onDestroy() may not be called at all". Even though in practice, in almost all cases it will, there is no guarantee: The documentation on finish() only promises that the result of the activity is propagated back to the caller, but nothing more. Moreover, the lifecycle documentation clarifies that the activity is killable by the OS as soon as onStop() finishes (or even earlier on older devices), which, even though unlikely and therefore rare to observe in a simple test, might mean that the activity might be killed while or even before onDestroy() is executed.
So if you want to make sure some work is done when you call finish(), you cannot put it in onDestroy(), but will need to do in the same place where you call finish(), right before actually calling it.
To make it easier for yourself you could also create an actionfilterattribute
public class AllowJsonGetAttribute : ActionFilterAttribute
{
public override void OnResultExecuting(ResultExecutingContext filterContext)
{
var jsonResult = filterContext.Result as JsonResult;
if (jsonResult == null)
throw new ArgumentException("Action does not return a JsonResult,
attribute AllowJsonGet is not allowed");
jsonResult.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
base.OnResultExecuting(filterContext);
}
}
and use it on your action
[AllowJsonGet]
public JsonResult MyAjaxAction()
{
return Json("this is my test");
}
$(document).ready(function () {
var someObj = {};
$("#checkAll").click(function () {
$('.chk').prop('checked', this.checked);
});
$(".chk").click(function () {
$("#checkAll").prop('checked', ($('.chk:checked').length == $('.chk').length) ? true : false);
});
$("input:checkbox").change(function () {
debugger;
someObj.elementChecked = [];
$("input:checkbox").each(function () {
if ($(this).is(":checked")) {
someObj.elementChecked.push($(this).attr("id"));
}
});
});
$("#button").click(function () {
debugger;
alert(someObj.elementChecked);
});
});
</script>
</head>
<body>
<ul class="chkAry">
<li><input type="checkbox" id="checkAll" />Select All</li>
<li><input class="chk" type="checkbox" id="Delhi">Delhi</li>
<li><input class="chk" type="checkbox" id="Pune">Pune</li>
<li><input class="chk" type="checkbox" id="Goa">Goa</li>
<li><input class="chk" type="checkbox" id="Haryana">Haryana</li>
<li><input class="chk" type="checkbox" id="Mohali">Mohali</li>
</ul>
<input type="button" id="button" value="Get" />
</body>
List all variables set in the config file, along with their values.
git config --list
If you are new to git then use the following commands to set a user name and email address.
Set user name
git config --global user.name "your Name"
Set user email
git config --global user.email "[email protected]"
Check user name
git config user.name
Check user email
git config user.email
Under [branch "master"]
, try adding the following to the repo's Git config file (.git/config
):
[branch "master"]
remote = origin
merge = refs/heads/master
This tells Git 2 things:
git pull
on the master branch, with no remote and branch specified, use the default remote (origin) and merge in the changes from the remote master branch.I'm not sure why this setup would've been removed from your configuration, though. You may have to follow the suggestions that other people have posted, too, but this may work (or help at least).
If you don't want to edit the config file by hand, you can use the command-line tool instead:
$ git config branch.master.remote origin
$ git config branch.master.merge refs/heads/master
A good example is Javascript. You want this to be at the bottom of the page that is rendered in the browser because this is best practice.
How would you do this from a View based on a Layout/Masterpage where you can only access the middle of the page?
You do this by declaring a Scripts section at the bottom of the Layout page. Then you can add content, in this case Javascript includes (I hope!), from your View page to the bottom of your layout page.
i had similar problem, i matched the entries in a particular column of two data sets and cbind only if it matched. For two data sets, data1 & data2, i am adding a column in data1 from data2 after comparing first column of both.
for(i in 1:nrow(data1){
for( j in 1:nrow(data2){
if (data1[i,1]==data2[j,1]) data1[i,3]<- data2[j,2]
}
}
If you are using Apache or Nginx as a server you have to create a .htaccess
(if not created before) and "On" RewriteEngine
RewriteEngine On
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -f [OR]
RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -d
RewriteRule ^ - [L]
RewriteRule ^ /index.html
You can try with:
route -n get default
It is not the same as GNU/Linux's route -n
(or even ip route show
) but is useful for checking the default route information.
Also, you can check the route that packages will take to a particular host. E.g.
route -n get www.yahoo.com
The output would be similar to:
route to: 98.137.149.56
destination: default
mask: 128.0.0.0
gateway: 5.5.0.1
interface: tun0
flags: <UP,GATEWAY,DONE,STATIC,PRCLONING>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 0 0 0 1500 0
IMHO netstat -nr
is what you need. Even MacOSX's Network utility app(*) uses the output of netstat to show routing information.
I hope this helps :)
(*) You can start Network utility with open /Applications/Utilities/Network\ Utility.app
Take a look at Simple JavaScript Inheritance and Inheritance Patterns in JavaScript.
The simplest method is probably functional inheritance but there are pros and cons.
Just write
System.Diagnostics.Process.Start(@"file path");
example
System.Diagnostics.Process.Start(@"C:\foo.jpg");
System.Diagnostics.Process.Start(@"C:\foo.doc");
System.Diagnostics.Process.Start(@"C:\foo.dxf");
...
And shell will run associated program reading it from the registry, like usual double click does.
Here is the Java 8+ example:
public static void pack(String sourceDirPath, String zipFilePath) throws IOException {
Path p = Files.createFile(Paths.get(zipFilePath));
try (ZipOutputStream zs = new ZipOutputStream(Files.newOutputStream(p))) {
Path pp = Paths.get(sourceDirPath);
Files.walk(pp)
.filter(path -> !Files.isDirectory(path))
.forEach(path -> {
ZipEntry zipEntry = new ZipEntry(pp.relativize(path).toString());
try {
zs.putNextEntry(zipEntry);
Files.copy(path, zs);
zs.closeEntry();
} catch (IOException e) {
System.err.println(e);
}
});
}
}
Simple version for Python 2.7+
my_ordered_dict = json.loads(json_str, object_pairs_hook=collections.OrderedDict)
Or for Python 2.4 to 2.6
import simplejson as json
import ordereddict
my_ordered_dict = json.loads(json_str, object_pairs_hook=ordereddict.OrderedDict)
From http://en.wikipedia.org/wiki/CDATA:
Since it is useful to be able to use less-than signs (<) and ampersands (&) in web page scripts, and to a lesser extent styles, without having to remember to escape them, it is common to use CDATA markers around the text of inline and elements in XHTML documents. But so that the document can also be parsed by HTML parsers, which do not recognise the CDATA markers, the CDATA markers are usually commented-out, as in this JavaScript example:
<script type="text/javascript">
//<![CDATA[
document.write("<");
//]]>
</script>
use Illuminate\Support\Facades\Route;
Warning Disappeared after importing the corresponding namespace.
Version's
You can use the LocalForward
directive in your host yam
section of ~/.ssh/config
:
LocalForward 5901 computer.myHost.edu:5901
I got this working by installing the various plugins below.
Most of the time things just import by themselves as soon as I type the class name. Alternatively, a lightbulb appears that you can click on. Or you can push F1, and type "import..." and there are various options there too. I kinda use all of them. Also F1 Implement for implementing an interface is helpful, but doesn't always work.
Screenshot of Extensions
Use "\\"
to escape the \ character.
Use json_encode() if possible (PHP 5.2+).
See this one (maybe duplicate?): Pass a PHP string to a JavaScript variable (and escape newlines)
You can do this easily manually for each column like this:
df['A_perc'] = df['A']/df['sum']
If you want to do this in one step for all columns, you can use the div
method (http://pandas.pydata.org/pandas-docs/stable/basics.html#matching-broadcasting-behavior):
ds.div(ds['sum'], axis=0)
And if you want this in one step added to the same dataframe:
>>> ds.join(ds.div(ds['sum'], axis=0), rsuffix='_perc')
A B C D sum A_perc B_perc \
1 0.151722 0.935917 1.033526 0.941962 3.063127 0.049532 0.305543
2 0.033761 1.087302 1.110695 1.401260 3.633017 0.009293 0.299283
3 0.761368 0.484268 0.026837 1.276130 2.548603 0.298739 0.190013
C_perc D_perc sum_perc
1 0.337409 0.307517 1
2 0.305722 0.385701 1
3 0.010530 0.500718 1
It would be great if you use :hover
pseudo class over the onmouseover
event
td:hover
{
background-color:white
}
and for the default styling just use
td
{
background-color:black
}
As you want to use these styling not over all the td
elements then you need to specify the class to those elements and add styling to that class like this
.customTD
{
background-color:black
}
.customTD:hover
{
background-color:white;
}
You can also use :nth-child
selector to select the td elements
Open preference -> appearance & behaviour -> System settings -> select (open project in new window) then apply.
Then you could open and edit multiple projects.
Another way to do this, for integer types anyway, is to define constants as enums in the class:
class test
{
public:
enum { N = 10 };
};
try this...
function arrSum(arr){
total = 0;
arr.forEach(function(key){
total = total + key;
});
return total;
}
In terms of pattern interpretation, there's no difference between the following forms:
/pattern/
new RegExp("pattern")
If you want to replace a literal string using the replace
method, I think you can just pass a string instead of a regexp to replace
.
Otherwise, you'd have to escape any regexp special characters in the pattern first - maybe like so:
function reEscape(s) {
return s.replace(/([.*+?^$|(){}\[\]])/mg, "\\$1");
}
// ...
var re = new RegExp(reEscape(pattern), "mg");
this.markup = this.markup.replace(re, value);
Try one of these other mime-types (from here: http://filext.com/file-extension/CSV )
Also, the mime-type might be case sensitive...
Make sure @RestController annotation is added right after the @SpringBootApplication. RestController annotation tells Spring that this code describes an endpoint that should be made available over the web.
2019 Update: I realize that this is somewhat bad advice. As the first comment states, this heavily depends on the situation, and it is not a bad practice to use the [hidden] attribute: see the comments for some of the cases where you need to use it and not *ngIf
Original answer:
You should always try to use *ngIf
instead of [hidden]
.
<input *ngIf="!isHidden" class="txt" type="password" [(ngModel)]="input_pw" >
There are several blog posts about that topics, but the bottom line is, that Hidden usually means you do not want the browser to render the object - using angular you still waste resource on rendering it, and it will end up in the DOM anyway (and tricky users can see it with basic browser manipulation).
In Html:
<div [style.maxHeight]="maxHeightForScrollContainer + 'px'">
</div>
In Ts
this.maxHeightForScrollContainer = 200 //your custom maxheight
I wasn't using Azure, but I got the same error locally. Using <customErrors mode="Off" />
seemed to have no effect, but checking the Application logs in Event Viewer revealed a warning from ASP.NET which contained all the detail I needed to resolve the issue.
I don't know if this what you want but try to remove overflow: hidden from #wrap
Follow these steps:-
1. Add dependencies of flutter_luncher_icons in pubspec.yaml file.You can find this plugin from here.
2. Add your required images in asstes folder and pubspec.yaml file as below .
pubspec.yaml
name: NewsApi.org
description: A new Flutter application.
# The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.1
fluttertoast: ^7.1.6
toast: ^0.1.5
flutter_launcher_icons: ^0.8.0
dev_dependencies:
flutter_test:
sdk: flutter
flutter_icons:
image_path: "assets/icon/newsicon.png"
android: true
ios: false
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
assets:
- assets/images/dropbox.png
fonts:
- family: LangerReguler
fonts:
- asset: assets/langer_reguler.ttf
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
3. Then run the command in terminal flutter pub get and then flutter_luncher_icon.This is what I get the result after the successfully run the command . And luncher icon is also generated successfully.
My Terminal
[E:\AndroidStudioProjects\FlutterProject\NewsFlutter\news_flutter>flutter pub get
Running "flutter pub get" in news_flutter... 881ms
E:\AndroidStudioProjects\FlutterProject\NewsFlutter\news_flutter>flutter pub run flutter_launcher_icons:main
--------------------------------------------
FLUTTER LAUNCHER ICONS (v0.8.0)
--------------------------------------------
• Creating default icons Android
• Overwriting the default Android launcher icon with a new icon
? Successfully generated launcher icons
Read the image, convert it to byte[]
, then return a File()
with a content type.
public ActionResult ImageResult(Image image, ImageFormat format, string contentType) {
using (var stream = new MemoryStream())
{
image.Save(stream, format);
return File(stream.ToArray(), contentType);
}
}
}
Here are the usings:
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using Microsoft.AspNetCore.Mvc;
If your application is 32 bit, and you want to deploy in a 64 bit machine, You need to set 'Enable 32 Bit Applications' property to 'True' in the application pool - advanced settings.
You Can use this code to read line by line in text file and You could also check about the first character is "*" then you can leave that..
Public Sub Test()
Dim ReadData as String
Open "C:\satheesh\myfile\file.txt" For Input As #1
Do Until EOF(1)
Line Input #1, ReadData 'Adding Line to read the whole line, not only first 128 positions
If Not Left(ReadData, 1) = "*" then
'' you can write the variable ReadData into the database or file
End If
Loop
Close #1
End Sub
I know this is a late answer but you could manually change the 7 font declarations in the latest version of Bootstrap:
html {
font-family: sans-serif;
}
body {
font-family: sans-serif;
}
pre, code, kbd, samp {
font-family: monospace;
}
input, button, select, optgroup, textarea {
font-family: inherit;
}
.tooltip {
font-family: sans-serif;
}
.popover {
font-family: sans-serif;
}
.text-monospace {
font-family: monospace;
}
Good luck.
This simple way worked fine for me:
<ul style="margin-top:-30px;">
Change bindingInformation=":8080:"
And remember to turn off the firewall for IISExpress
UPDATE
Microsoft now provide this artifact in maven central. See @nirmal's answer for further details: https://stackoverflow.com/a/41149866/1570834
ORIGINAL ANSWER
The issue is that Maven can't find this artifact in any of the configured maven repositories.
Unfortunately Microsoft doesn't make this artifact available via any maven repository. You need to download the jar from the Microsoft website, and then manually install it into your local maven repository.
You can do this with the following maven command:
mvn install:install-file -Dfile=sqljdbc4.jar -DgroupId=com.microsoft.sqlserver -DartifactId=sqljdbc4 -Dversion=4.0 -Dpackaging=jar
Then next time you run maven on your POM it will find the artifact.
PHP 7
// Validate a domain name
var_dump(filter_var('mandrill._domainkey.mailchimp.com', FILTER_VALIDATE_DOMAIN));
# string(33) "mandrill._domainkey.mailchimp.com"
// Validate an hostname (here, the underscore is invalid)
var_dump(filter_var('mandrill._domainkey.mailchimp.com', FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME));
# bool(false)
It is not documented here: http://www.php.net/filter.filters.validate and a bug request for this is located here: https://bugs.php.net/bug.php?id=72013
Works in Ubuntu 20.04
Add this line inside <policymap>
<policy domain="module" rights="read|write" pattern="{PS,PDF,XPS}" />
Comment these lines:
<!--
<policy domain="coder" rights="none" pattern="PS" />
<policy domain="coder" rights="none" pattern="PS2" />
<policy domain="coder" rights="none" pattern="PS3" />
<policy domain="coder" rights="none" pattern="EPS" />
<policy domain="coder" rights="none" pattern="PDF" />
<policy domain="coder" rights="none" pattern="XPS" />
-->
Once you have obtained the context in your onTap() you can also do:
Intent myIntent = new Intent(mContext, theNewActivity.class);
mContext.startActivity(myIntent);
I am using Visual Studio 2013 & SQL Server 2014. I got the below error Microsoft.SqlServer.management.sdk.sfc version 11.0.0.0 not found by visual studio. I have tried all the things like installing
ENU\x64\SharedManagementObjects.msi for X64 OS or
ENU\x86\SharedManagementObjects.msi for X86 OS
ENU\x64\SQLSysClrTypes.msi
Reinstalling Sql Server 2014
What actually solved my problem is to repair the visual studio 2013(or any other version you are using) now the problem is removed . What i think it is problem of Visual Studio not Sql Server as i was able to access and use the Sql Server tool.
In my case (I'm using typescript) I was trying to simulate response with fake data where the data is assigned later on. My first attempt was with:
let response = {status: 200, data: []};
and later, on the assignment of the fake data it starts complaining that it is not assignable to type 'never[]'. Then I defined the response like follows and it accepted it..
let dataArr: MyClass[] = [];
let response = {status: 200, data: dataArr};
and assigning of the fake data:
response.data = fakeData;
comment on the "private constructor" arguments: come on, developers are not that stupid; but they ARE lazy. creating an object then call static methods? not gonna happen.
don't spend too much time to make sure your class cannot be misused. have some faith for your colleagues. and there is always a way to misuse your class no matter how you protect it. the only thing that cannot be misused is a thing that is completely useless.
You can add a new column at the end of your table
ALTER TABLE assessment ADD q6 VARCHAR( 255 )
Add column to the begining of table
ALTER TABLE assessment ADD q6 VARCHAR( 255 ) FIRST
Add column next to a specified column
ALTER TABLE assessment ADD q6 VARCHAR( 255 ) after q5
and more options here
Use the output annotation
@Directive({
selector: 'interval-dir',
})
class IntervalDir {
@Output() everySecond = new EventEmitter();
@Output('everyFiveSeconds') five5Secs = new EventEmitter();
constructor() {
setInterval(() => this.everySecond.emit("event"), 1000);
setInterval(() => this.five5Secs.emit("event"), 5000);
}
}
@Component({
selector: 'app',
template: `
<interval-dir (everySecond)="everySecond()" (everyFiveSeconds)="everyFiveSeconds()">
</interval-dir>
`,
directives: [IntervalDir]
})
class App {
everySecond() { console.log('second'); }
everyFiveSeconds() { console.log('five seconds'); }
}
bootstrap(App);
Set this to False on your web.config
<compilation debug="false" targetFramework="4.6.1" />
NB: this is LINQ to objects, I am not 100% sure if it work in LINQ to entities, and have no time to check it right now. In fact it isn't too difficult to translate it to x in [A, B, C] but you have to check for yourself.
So, instead of Contains as a replacement of the ???? in your code you can use Any which is more LINQ-uish:
// Filter the orders based on the order status
var filteredOrders = from order in orders.Order
where new[] { "A", "B", "C" }.Any(s => s == order.StatusCode)
select order;
It's the opposite to what you know from SQL this is why it is not so obvious.
Of course, if you prefer fluent syntax here it is:
var filteredOrders = orders.Order.Where(order => new[] {"A", "B", "C"}.Any(s => s == order.StatusCode));
Here we again see one of the LINQ surprises (like Joda-speech which puts select at the end). However it is quite logical in this sense that it checks if at least one of the items (that is any) in a list (set, collection) matches a single value.
When a script is loaded, any parameters that are passed are automatically loaded into a special variables $args
. You can reference that in your script without first declaring it.
As an example, create a file called test.ps1
and simply have the variable $args
on a line by itself. Invoking the script like this, generates the following output:
PowerShell.exe -File test.ps1 a b c "Easy as one, two, three"
a
b
c
Easy as one, two, three
As a general recommendation, when invoking a script by calling PowerShell directly I would suggest using the -File
option rather than implicitly invoking it with the &
- it can make the command line a bit cleaner, particularly if you need to deal with nested quotes.
Splits the string in text
on any consecutive runs of whitespace.
words = text.split()
Split the string in text
on delimiter: ","
.
words = text.split(",")
The words variable will be a list
and contain the words from text
split on the delimiter.
My problem was that I hadn't built the project yet (oops). Don't know if this really helps anyone, but just make sure you build everything before clicking links.
$(document).ready(function () {
var longpress = false;
$("button").on('click', function () {
(longpress) ? alert("Long Press") : alert("Short Press");
});
var startTime, endTime;
$("button").on('mousedown', function () {
startTime = new Date().getTime();
});
$("button").on('mouseup', function () {
endTime = new Date().getTime();
longpress = (endTime - startTime < 500) ? false : true;
});
});
DSO here means Dynamic Shared Object; since the error message says it's missing from the command line, I guess you have to add it to the command line.
That is, try adding -lpthread
to your command line.
If you are insisting to use the window.location.origin
You can put this in top of your code before reading the origin
if (!window.location.origin) {
window.location.origin = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');
}
PS: For the record, it was actually the original question. It was already edited :)
I was having the exact same problem. In my case none of the above solutions worked, what did it for me was to add the following:
app.UseCors(builder => builder
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()
So basically, allow everything.
Bear in mind that this is safe only if running locally.
for first 10 rows...
SELECT * FROM msgtable WHERE cdate='18/07/2012' LIMIT 0,10
for next 10 rows
SELECT * FROM msgtable WHERE cdate='18/07/2012' LIMIT 10,10
'^(part1|part2|part1,part2)$'
does it work?
When a client connects to an Oracle server, it first connnects to the Oracle listener service. It often redirects the client to another port. So the client has to open another connection on a different port, which is blocked by the firewall.
So you might in fact have encountered a firewall problem due to Oracle port redirection. It should be possible to diagnose it with a network monitor on the client machine or with the firewall management software on the firewall.
The key is calling the parent's method using super.methodName();
class A {
// A protected method
protected doStuff()
{
alert("Called from A");
}
// Expose the protected method as a public function
public callDoStuff()
{
this.doStuff();
}
}
class B extends A {
// Override the protected method
protected doStuff()
{
// If we want we can still explicitly call the initial method
super.doStuff();
alert("Called from B");
}
}
var a = new A();
a.callDoStuff(); // Will only alert "Called from A"
var b = new B()
b.callDoStuff(); // Will alert "Called from A" then "Called from B"
In the WPF application, you can handle this by handling TextChanged
event:
void arsDigitTextBox_TextChanged(object sender, System.Windows.Controls.TextChangedEventArgs e)
{
Regex regex = new Regex("[^0-9]+");
bool handle = regex.IsMatch(this.Text);
if (handle)
{
StringBuilder dd = new StringBuilder();
int i = -1;
int cursor = -1;
foreach (char item in this.Text)
{
i++;
if (char.IsDigit(item))
dd.Append(item);
else if(cursor == -1)
cursor = i;
}
this.Text = dd.ToString();
if (i == -1)
this.SelectionStart = this.Text.Length;
else
this.SelectionStart = cursor;
}
}
Go to Jenkins -> Manage Jenkins -> Configure System -> Global properties Check the box 'Environment variables' and add the JAVA_HOME path = "C:\Program Files\Java\jdk-10.0.1"
*Don't write bin at the end