Search and destroy (or move cautiously) any my.ini files (windows or program files), which is affecting the mysql service failure. also check port 3306 is used by using either netstat or portqry tool. this should help. Also if there is a file system issue you can run check disk.
Looks like you missed some options, try to add:
position: relative;
top: 25px;
How about using spread operator as a parameter? The same block can be called with Multiple parameters. All the parameters are added into an array and inside the method you can loop in based on the length.
function mName(...opt){
console.log(opt);
}
mName(1,2,3,4); //[1,2,3,4]
mName(1,2,3); //[1,2,3]
The easiest way is:
F6
to build itMy Documents\Visual Studio 200x\Projects\my_project\
)bin\Release\
and copy the executable from there to wherever you want to store itIt depends on which version of Oracle? Older versions require exp (export), newer versions use expdp (data pump); exp was deprecated but still works most of the time.
Before starting, note that Data Pump exports to the server-side Oracle "directory", which is an Oracle symbolic location mapped in the database to a physical location. There may be a default directory (DATA_PUMP_DIR), check by querying DBA_DIRECTORIES:
SQL> select * from dba_directories;
... and if not, create one
SQL> create directory DATA_PUMP_DIR as '/oracle/dumps';
SQL> grant all on directory DATA_PUMP_DIR to myuser; -- DBAs dont need this grant
Assuming you can connect as the SYSTEM user, or another DBA, you can export any schema like so, to the default directory:
$ expdp system/manager schemas=user1 dumpfile=user1.dpdmp
Or specifying a specific directory, add directory=<directory name>
:
C:\> expdp system/manager schemas=user1 dumpfile=user1.dpdmp directory=DUMPDIR
With older export utility, you can export to your working directory, and even on a client machine that is remote from the server, using:
$ exp system/manager owner=user1 file=user1.dmp
Make sure the export is done in the correct charset. If you haven't setup your environment, the Oracle client charset may not match the DB charset, and Oracle will do charset conversion, which may not be what you want. You'll see a warning, if so, then you'll want to repeat the export after setting NLS_LANG environment variable so the client charset matches the database charset. This will cause Oracle to skip charset conversion.
Example for American UTF8 (UNIX):
$ export NLS_LANG=AMERICAN_AMERICA.AL32UTF8
Windows uses SET, example using Japanese UTF8:
C:\> set NLS_LANG=Japanese_Japan.AL32UTF8
More info on Data Pump here: http://docs.oracle.com/cd/B28359_01/server.111/b28319/dp_export.htm#g1022624
You don't need jQuery for that. Use regular javascript
var arr = new Array();
// or var arr = [];
arr.push('value1');
arr.push('value2');
Note: In javascript, you can also use Objects as Arrays, but still have access to the Array prototypes. This makes the object behave like an array:
var obj = new Object();
Array.prototype.push.call(obj, 'value');
will create an object that looks like:
{
0: 'value',
length: 1
}
You can access the vaules just like a normal array f.ex obj[0]
.
Setting the User-Agent from everyone's favorite Dive Into Python.
The short story: You can use Request.add_header to do this.
You can also pass the headers as a dictionary when creating the Request itself, as the docs note:
headers should be a dictionary, and will be treated as if
add_header()
was called with each key and value as arguments. This is often used to “spoof” theUser-Agent
header, which is used by a browser to identify itself – some HTTP servers only allow requests coming from common browsers as opposed to scripts. For example, Mozilla Firefox may identify itself as"Mozilla/5.0 (X11; U; Linux i686) Gecko/20071127 Firefox/2.0.0.11"
, whileurllib2
‘s default user agent string is"Python-urllib/2.6"
(on Python 2.6).
Add this class
css
to your style sheet
.border_gradient {
border: 8px solid #000;
-moz-border-bottom-colors:#897048 #917953 #a18a66 #b6a488 #c5b59b #d4c5ae #e2d6c4 #eae1d2;
-moz-border-top-colors:#897048 #917953 #a18a66 #b6a488 #c5b59b #d4c5ae #e2d6c4 #eae1d2;
-moz-border-left-colors:#897048 #917953 #a18a66 #b6a488 #c5b59b #d4c5ae #e2d6c4 #eae1d2;
-moz-border-right-colors:#897048 #917953 #a18a66 #b6a488 #c5b59b #d4c5ae #e2d6c4 #eae1d2;
padding: 5px 5px 5px 15px;
width: 300px;
}
set width
to the width
of your image. and use this html
for image
<div class="border_gradient">
<img src="image.png" />
</div>
though it may not give the same exact border, it will some gradient looks on the border.
source: CSS3 Borders
? 1. Can I set state inside a useEffect hook?
In principle, you can set state freely where you need it - including inside useEffect
and even during rendering. Just make sure to avoid infinite loops by settting Hook deps
properly and/or state conditionally.
? 2. Lets say I have some state that is dependent on some other state. Is it appropriate to create a hook that observes A and sets B inside the useEffect hook?
You just described the classic use case for useReducer
:
useReducer
is usually preferable touseState
when you have complex state logic that involves multiple sub-values or when the next state depends on the previous one. (React docs)When setting a state variable depends on the current value of another state variable, you might want to try replacing them both with
useReducer
. [...] When you find yourself writingsetSomething(something => ...)
, it’s a good time to consider using a reducer instead. (Dan Abramov, Overreacted blog)
let MyComponent = () => {_x000D_
let [state, dispatch] = useReducer(reducer, { a: 1, b: 2 });_x000D_
_x000D_
useEffect(() => {_x000D_
console.log("Some effect with B");_x000D_
}, [state.b]);_x000D_
_x000D_
return (_x000D_
<div>_x000D_
<p>A: {state.a}, B: {state.b}</p>_x000D_
<button onClick={() => dispatch({ type: "SET_A", payload: 5 })}>_x000D_
Set A to 5 and Check B_x000D_
</button>_x000D_
<button onClick={() => dispatch({ type: "INCREMENT_B" })}>_x000D_
Increment B_x000D_
</button>_x000D_
</div>_x000D_
);_x000D_
};_x000D_
_x000D_
// B depends on A. If B >= A, then reset B to 1._x000D_
function reducer(state, { type, payload }) {_x000D_
const someCondition = state.b >= state.a;_x000D_
_x000D_
if (type === "SET_A")_x000D_
return someCondition ? { a: payload, b: 1 } : { ...state, a: payload };_x000D_
else if (type === "INCREMENT_B") return { ...state, b: state.b + 1 };_x000D_
return state;_x000D_
}_x000D_
_x000D_
ReactDOM.render(<MyComponent />, document.getElementById("root"));
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.0/umd/react.production.min.js" integrity="sha256-32Gmw5rBDXyMjg/73FgpukoTZdMrxuYW7tj8adbN8z4=" crossorigin="anonymous"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.0/umd/react-dom.production.min.js" integrity="sha256-bjQ42ac3EN0GqK40pC9gGi/YixvKyZ24qMP/9HiGW7w=" crossorigin="anonymous"></script>_x000D_
<div id="root"></div>_x000D_
<script>var { useReducer, useEffect } = React</script>
_x000D_
? 3. Will the effects cascade such that, when I click the button, the first effect will fire, causing b to change, causing the second effect to fire, before the next render?
useEffect
always runs after the render is committed and DOM changes are applied. The first effect fires, changes b
and causes a re-render. After this render has completed, second effect will run due to b
changes.
let MyComponent = props => {_x000D_
console.log("render");_x000D_
let [a, setA] = useState(1);_x000D_
let [b, setB] = useState(2);_x000D_
_x000D_
let isFirstRender = useRef(true);_x000D_
_x000D_
useEffect(() => {_x000D_
console.log("useEffect a, value:", a);_x000D_
if (isFirstRender.current) isFirstRender.current = false;_x000D_
else setB(3);_x000D_
return () => {_x000D_
console.log("unmount useEffect a, value:", a);_x000D_
};_x000D_
}, [a]);_x000D_
useEffect(() => {_x000D_
console.log("useEffect b, value:", b);_x000D_
return () => {_x000D_
console.log("unmount useEffect b, value:", b);_x000D_
};_x000D_
}, [b]);_x000D_
_x000D_
return (_x000D_
<div>_x000D_
<p>a: {a}, b: {b}</p>_x000D_
<button_x000D_
onClick={() => {_x000D_
console.log("Clicked!");_x000D_
setA(5);_x000D_
}}_x000D_
>_x000D_
click me_x000D_
</button>_x000D_
</div>_x000D_
);_x000D_
};_x000D_
_x000D_
ReactDOM.render(<MyComponent />, document.getElementById("root"));
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.0/umd/react.production.min.js" integrity="sha256-32Gmw5rBDXyMjg/73FgpukoTZdMrxuYW7tj8adbN8z4=" crossorigin="anonymous"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.0/umd/react-dom.production.min.js" integrity="sha256-bjQ42ac3EN0GqK40pC9gGi/YixvKyZ24qMP/9HiGW7w=" crossorigin="anonymous"></script>_x000D_
<div id="root"></div>_x000D_
<script>var { useReducer, useEffect, useState, useRef } = React</script>
_x000D_
? 4. Are there any performance downsides to structuring code like this?
Yes. By wrapping the state change of b
in a separate useEffect
for a
, the browser has an additional layout/paint phase - these effects are potentially visible for the user. If there is no way you want give useReducer
a try, you could change b
state together with a
directly:
let MyComponent = () => {_x000D_
console.log("render");_x000D_
let [a, setA] = useState(1);_x000D_
let [b, setB] = useState(2);_x000D_
_x000D_
useEffect(() => {_x000D_
console.log("useEffect b, value:", b);_x000D_
return () => {_x000D_
console.log("unmount useEffect b, value:", b);_x000D_
};_x000D_
}, [b]);_x000D_
_x000D_
const handleClick = () => {_x000D_
console.log("Clicked!");_x000D_
setA(5);_x000D_
b >= 5 ? setB(1) : setB(b + 1);_x000D_
};_x000D_
_x000D_
return (_x000D_
<div>_x000D_
<p>_x000D_
a: {a}, b: {b}_x000D_
</p>_x000D_
<button onClick={handleClick}>click me</button>_x000D_
</div>_x000D_
);_x000D_
};_x000D_
_x000D_
ReactDOM.render(<MyComponent />, document.getElementById("root"));
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.0/umd/react.production.min.js" integrity="sha256-32Gmw5rBDXyMjg/73FgpukoTZdMrxuYW7tj8adbN8z4=" crossorigin="anonymous"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.0/umd/react-dom.production.min.js" integrity="sha256-bjQ42ac3EN0GqK40pC9gGi/YixvKyZ24qMP/9HiGW7w=" crossorigin="anonymous"></script>_x000D_
<div id="root"></div>_x000D_
<script>var { useReducer, useEffect, useState, useRef } = React</script>
_x000D_
You already have a version of mySQL installed on this machine that is using port 3306. Go into the most recent my.ini
file and change the port to 3307
. Restart the mySQL service and see if it comes up.
You also need to change port 3306 to 3307 in xampp\php\php.ini
Another method utilizing the dplyr package:
library(dplyr)
df <- mtcars %>%
filter(mpg > 25)
Without the chain (%>%) operator:
library(dplyr)
df <- filter(mtcars, mpg > 25)
I turn on .Net Framework 3.5 and 4.5 Advance Service in Control Panel->Programs and Features->Turn Windows features on or off.it work for me.
int
and double
have different semantics. Consider division. 1/2
is 0
, 1.0/2.0
is 0.5
. In any given situation, one of those answers will be right and the other wrong.
That said, there are programming languages, such as JavaScript, in which 64-bit float is the only numeric data type. You have to explicitly truncate some division results to get the same semantics as Java int
. Languages such as Java that support integer types make truncation automatic for integer variables.
In addition to having different semantics from double
, int
arithmetic is generally faster, and the smaller size (32 bits vs. 64 bits) leads to more efficient use of caches and data transfer bandwidth.
because you have initiated the Transaction over the data insertion so, The first check the transaction completed or not. once you start the transaction, it should be committed or rollback according to the status of the transaction;
function add_post($post_data){
$this->db->trans_begin()
$this->db->insert('posts',$post_data);
$this->db->trans_complete();
if ($this->db->trans_status() === FALSE){
$this->db->trans_rollback();
return 0;
}else{
$this->db->trans_commit();
return $this->db->insert_id();
}
}``
in the above, we have committed the data on the successful transaction even you get the timestamp
You can use:
border-style: solid;
border-width: thin;
border-color: #FFFFFF;
You can change these as you see fit, though.
Your code may be running in the security context of a user that is not allowed to start a service.
Since you are using WCF, I am guessing that you are in the context of NETWORK SERVICE.
One quick way to do this is to create a column with a formula that evaluates to true for the rows you care about and then filter for the value TRUE in that column.
Yes its possible Here the code is
const fs = require('fs')
let data = "Learning how to write in a file."
fs.writeFile('Output.txt', data, (err) => {
// In case of a error throw err.
if (err) throw err;
})
_x000D_
update YourTable
set YourColumn = replace(YourColumn, '@domain2', '@domain1')
where charindex('@domain2', YourColumn) <> 0
You didn't hear it from me, the PM for Razor, but in Razor 2 (Web Pages 2 and MVC 4) we'll have conditional attributes built into Razor(as of MVC 4 RC tested successfully), so you can just say things like this...
<input type="text" id="@strElementID" class="@strCSSClass" />
If strCSSClass is null then the class attribute won't render at all.
SSSHHH...don't tell. :)
CTRL + P this searches for the file name your direct answer.
Sometimes I need to declare multiple classes in one file, or I want to export base classes and keep their names exported because of my JetBrains editor understands that better. I just use
global.MyClass = class MyClass { ... };
And somewhere else:
require('baseclasses.js');
class MySubclass extends MyClass() { ... }
Step 1 -
Create SSH keys on your linux system using below command
ssh-keygen -t rsa -b 4096 -C "your_email"
It will ask for passphrase and file name (default will be ~/.ssh/id_rsa, ~/.ssh/id_rsa.pub)
Step 2 -
Once files created add public key id_rsa.pub to github account ssh section.
Step 3 -
On your machine add private key id_rsa to ssh-agent using below command
ssh-add ~/.ssh/id_rsa
Step 4 -
Now add remote url [email protected]:user_name/repo_name.git to your local git repo using below command.
git remote remove origin
git remote add origin [email protected]:user_name/repo_name.git
Thats it.
Since Java 8, we can achieve this as follows:
private static String convertDate(String strDate)
{
//for strdate = 2017 July 25
DateTimeFormatter f = new DateTimeFormatterBuilder().appendPattern("yyyy MMMM dd")
.toFormatter();
LocalDate parsedDate = LocalDate.parse(strDate, f);
DateTimeFormatter f2 = DateTimeFormatter.ofPattern("MM/d/yyyy");
String newDate = parsedDate.format(f2);
return newDate;
}
The output will be : "07/25/2017"
If dealing with numbers that are either one or two digits:
'0'+str(number)[-2:]
or '0{0}'.format(number)[-2:]
division = 3623 // 3600 #to hours
division2 = 600 // 60 #to minutes
print (division) #write hours
print (division2) #write minutes
PS My code is unprofessional
Seems nobody noticed that -x
operator does not differ file with directory.
So to precisely check an executable file, you may use
[[ -f SomeFile && -x SomeFile ]]
In the first example, ptr has not been initialized, so it points to an unspecified memory location. When you assign something to this unspecified location, your program blows up.
In the second example, the address is set when you say ptr = &q, so you're OK.
Solving this problem is much more within reach nowadays. The HTML5 History API allows us to manipulate the location bar to display any URL within the current domain.
function removeHash () {
history.pushState("", document.title, window.location.pathname
+ window.location.search);
}
Working demo: http://jsfiddle.net/AndyE/ycmPt/show/
This works in Chrome 9, Firefox 4, Safari 5, Opera 11.50 and in IE 10. For unsupported browsers, you could always write a gracefully degrading script that makes use of it where available:
function removeHash () {
var scrollV, scrollH, loc = window.location;
if ("pushState" in history)
history.pushState("", document.title, loc.pathname + loc.search);
else {
// Prevent scrolling by storing the page's current scroll offset
scrollV = document.body.scrollTop;
scrollH = document.body.scrollLeft;
loc.hash = "";
// Restore the scroll offset, should be flicker free
document.body.scrollTop = scrollV;
document.body.scrollLeft = scrollH;
}
}
So you can get rid of the hash symbol, just not in all browsers — yet.
Note: if you want to replace the current page in the browser history, use replaceState()
instead of pushState()
.
my css
TR.gray-t {background:#949494;}
h3{
padding-top:3px;
font:bold 12px/2px Arial;
}
my html
<TR class='gray-t'>
<TD colspan='3'><h3>KAJANG</h3>
I decrease the 2nd size in font.
padding-top
is used to fix the size in IE7.
If use generic repository
> lstModule = _ModuleRepository.GetAll().OrderBy(x => new { x.Level,
> x.Rank}).ToList();
else
> _db.Module.Where(x=> ......).OrderBy(x => new { x.Level, x.Rank}).ToList();
Your syntax for the target attribute is correct, but browsers need not honor it. They may interpret it as opening the destination in a new tab rather than new window, or they may completely ignore the attribute. Browsers have settings for such issues. Moreover, opening of new windows may be prevented by browser plugins (typically designed to prevent annoying advertisements).
There’s little you can do about this as an author. You might consider opening a new window with JavaScript instead, cf. to the accepted answer to target="_blank" is not working in firefox?, but browsers may be even more reluctant to let pages open new windows that way than via target.
for (const field in this.formErrors) {
if (this.formErrors.hasOwnProperty(field)) {
for (const key in control.errors) {
if (control.errors.hasOwnProperty(key)) {
The above solution is good if all the data is of same dtype. Numpy arrays are homogeneous containers. When you do df.values
the output is an numpy array
. So if the data has int
and float
in it then output will either have int
or float
and the columns will loose their original dtype.
Consider df
a b
0 1 4
1 2 5
2 3 6
a float64
b int64
So if you want to keep original dtype, you can do something like
row_list = df.to_csv(None, header=False, index=False).split('\n')
this will return each row as a string.
['1.0,4', '2.0,5', '3.0,6', '']
Then split each row to get list of list. Each element after splitting is a unicode. We need to convert it required datatype.
def f(row_str):
row_list = row_str.split(',')
return [float(row_list[0]), int(row_list[1])]
df_list_of_list = map(f, row_list[:-1])
[[1.0, 4], [2.0, 5], [3.0, 6]]
If you are using jdk1.7.0_04, upgrade to jdk1.7.0_21. The problem has been fixed in that update.
The easiest way is to include the gem 'activesupport'
(or gem 'active_support'
).
Then, in your class you only need to
require 'active_support/core_ext/hash/slice'
and to call
params.slice(:choice1, :choice2, :choice3) # => {:choice1=>"Oh look, another one", :choice2=>"Even more strings", :choice3=>"But wait"}
I believe it's not worth it to be declaring other functions that may have bugs, and it's better to use a method that has been tweaked during last few years.
Here are few steps that must be followed carefully
Create a folder named config inside C:\wamp\apps\phpmyadmin, the folder inside apps may have different name like phpmyadmin3.2.0.1
Return to your browser in phpmyadmin setup tab, and click New server.
Change the authentication type to ‘cookie’ and leave the username and password field empty but if you change the authentication type to ‘config’ enter the password for username root.
As Brad Wilson states in his answer here:
ModelState.IsValid tells you if any model errors have been added to ModelState.
The default model binder will add some errors for basic type conversion issues (for example, passing a non-number for something which is an "int"). You can populate ModelState more fully based on whatever validation system you're using.
Try using :-
if (!ModelState.IsValid)
{
var errors = ModelState.SelectMany(x => x.Value.Errors.Select(z => z.Exception));
// Breakpoint, Log or examine the list with Exceptions.
}
If it helps catching you the error. Courtesy this and this
For an alternate crash reporting/exception tracking service check out Raygun.io - it's got a bunch of nice logic for handling Android crashes, including decent user experience when plugging it in to your app (two lines of code in your main Activity and a few lines of XML pasted into AndroidManifest).
When your app crashes, it'll automatically grab the stack trace, environment data for hard/software, user tracking info, any custom data you specify etc. It posts it to the API asynchronously so no blocking of the UI thread, and caches it to disk if there's no network available.
Disclaimer: I built the Android provider :)
the ansible doc is quite clear https://docs.ansible.com/ansible/latest/collections/ansible/builtin/copy_module.html for parameter src it says the following:
Local path to a file to copy to the remote server.
This can be absolute or relative.
If path is a directory, it is copied recursively. In this case, if path ends with "/",
only inside contents of that directory are copied to destination. Otherwise, if it
does not end with "/", the directory itself with all contents is copied. This behavior
is similar to the rsync command line tool.
So what you need is skip the / at the end of your src path.
- name: copy html file
copy: src=/home/vagrant/dist dest=/usr/share/nginx/html/
Use a sub query similar to the below.
UPDATE P
SET extrasPrice = sub.TotalPrice from
BookingPitches p
inner join
(Select PitchID, Sum(Price) TotalPrice
from dbo.BookingPitchExtras
Where [Required] = 1
Group by Pitchid
) as Sub
on p.Id = e.PitchId
where p.BookingId = 1
If the case is accessing the IFrame via console, e. g. Chrome Dev Tools then you can just select the context of DOM requests via dropdown (see the picture).
To remove the "keep-alive" header in requests, I just created it from the Request object and then send it with Session
headers = {
'Host' : '1.2.3.4',
'User-Agent' : 'Test client (x86_64-pc-linux-gnu 7.16.3)',
'Accept' : '*/*',
'Accept-Encoding' : 'deflate, gzip',
'Accept-Language' : 'it_IT'
}
url = "https://stream.twitter.com/1/statuses/filter.json"
#r = requests.get(url, headers = headers) #this triggers keep-alive: True
s = requests.Session()
r = requests.Request('GET', url, headers)
A good way to test if a string is a correct date is to use the command date:
if date -d "${DATE}" >/dev/null 2>&1
then
# do what you need to do with your date
else
echo "${DATE} incorrect date" >&2
exit 1
fi
from comment: one can use formatting
if [ "2017-01-14" == $(date -d "2017-01-14" '+%Y-%m-%d') ]
there is a node package delay
very easy to use
const delay = require('delay');
(async () => {
bar();
await delay(100);
// Executed 100 milliseconds later
baz();
})();
This answer is all about authorization and it is a complement of my previous answer about authentication
Why another answer? I attempted to expand my previous answer by adding details on how to support JSR-250 annotations. However the original answer became the way too long and exceeded the maximum length of 30,000 characters. So I moved the whole authorization details to this answer, keeping the other answer focused on performing authentication and issuing tokens.
@Secured
annotationBesides authentication flow shown in the other answer, role-based authorization can be supported in the REST endpoints.
Create an enumeration and define the roles according to your needs:
public enum Role {
ROLE_1,
ROLE_2,
ROLE_3
}
Change the @Secured
name binding annotation created before to support roles:
@NameBinding
@Retention(RUNTIME)
@Target({TYPE, METHOD})
public @interface Secured {
Role[] value() default {};
}
And then annotate the resource classes and methods with @Secured
to perform the authorization. The method annotations will override the class annotations:
@Path("/example")
@Secured({Role.ROLE_1})
public class ExampleResource {
@GET
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
public Response myMethod(@PathParam("id") Long id) {
// This method is not annotated with @Secured
// But it's declared within a class annotated with @Secured({Role.ROLE_1})
// So it only can be executed by the users who have the ROLE_1 role
...
}
@DELETE
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
@Secured({Role.ROLE_1, Role.ROLE_2})
public Response myOtherMethod(@PathParam("id") Long id) {
// This method is annotated with @Secured({Role.ROLE_1, Role.ROLE_2})
// The method annotation overrides the class annotation
// So it only can be executed by the users who have the ROLE_1 or ROLE_2 roles
...
}
}
Create a filter with the AUTHORIZATION
priority, which is executed after the AUTHENTICATION
priority filter defined previously.
The ResourceInfo
can be used to get the resource Method
and resource Class
that will handle the request and then extract the @Secured
annotations from them:
@Secured
@Provider
@Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
@Context
private ResourceInfo resourceInfo;
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
// Get the resource class which matches with the requested URL
// Extract the roles declared by it
Class<?> resourceClass = resourceInfo.getResourceClass();
List<Role> classRoles = extractRoles(resourceClass);
// Get the resource method which matches with the requested URL
// Extract the roles declared by it
Method resourceMethod = resourceInfo.getResourceMethod();
List<Role> methodRoles = extractRoles(resourceMethod);
try {
// Check if the user is allowed to execute the method
// The method annotations override the class annotations
if (methodRoles.isEmpty()) {
checkPermissions(classRoles);
} else {
checkPermissions(methodRoles);
}
} catch (Exception e) {
requestContext.abortWith(
Response.status(Response.Status.FORBIDDEN).build());
}
}
// Extract the roles from the annotated element
private List<Role> extractRoles(AnnotatedElement annotatedElement) {
if (annotatedElement == null) {
return new ArrayList<Role>();
} else {
Secured secured = annotatedElement.getAnnotation(Secured.class);
if (secured == null) {
return new ArrayList<Role>();
} else {
Role[] allowedRoles = secured.value();
return Arrays.asList(allowedRoles);
}
}
}
private void checkPermissions(List<Role> allowedRoles) throws Exception {
// Check if the user contains one of the allowed roles
// Throw an Exception if the user has not permission to execute the method
}
}
If the user has no permission to execute the operation, the request is aborted with a 403
(Forbidden).
To know the user who is performing the request, see my previous answer. You can get it from the SecurityContext
(which should be already set in the ContainerRequestContext
) or inject it using CDI, depending on the approach you go for.
If a @Secured
annotation has no roles declared, you can assume all authenticated users can access that endpoint, disregarding the roles the users have.
Alternatively to defining the roles in the @Secured
annotation as shown above, you could consider JSR-250 annotations such as @RolesAllowed
, @PermitAll
and @DenyAll
.
JAX-RS doesn't support such annotations out-of-the-box, but it could be achieved with a filter. Here are a few considerations to keep in mind if you want to support all of them:
@DenyAll
on the method takes precedence over @RolesAllowed
and @PermitAll
on the class.@RolesAllowed
on the method takes precedence over @PermitAll
on the class.@PermitAll
on the method takes precedence over @RolesAllowed
on the class.@DenyAll
can't be attached to classes.@RolesAllowed
on the class takes precedence over @PermitAll
on the class.So an authorization filter that checks JSR-250 annotations could be like:
@Provider
@Priority(Priorities.AUTHORIZATION)
public class AuthorizationFilter implements ContainerRequestFilter {
@Context
private ResourceInfo resourceInfo;
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
Method method = resourceInfo.getResourceMethod();
// @DenyAll on the method takes precedence over @RolesAllowed and @PermitAll
if (method.isAnnotationPresent(DenyAll.class)) {
refuseRequest();
}
// @RolesAllowed on the method takes precedence over @PermitAll
RolesAllowed rolesAllowed = method.getAnnotation(RolesAllowed.class);
if (rolesAllowed != null) {
performAuthorization(rolesAllowed.value(), requestContext);
return;
}
// @PermitAll on the method takes precedence over @RolesAllowed on the class
if (method.isAnnotationPresent(PermitAll.class)) {
// Do nothing
return;
}
// @DenyAll can't be attached to classes
// @RolesAllowed on the class takes precedence over @PermitAll on the class
rolesAllowed =
resourceInfo.getResourceClass().getAnnotation(RolesAllowed.class);
if (rolesAllowed != null) {
performAuthorization(rolesAllowed.value(), requestContext);
}
// @PermitAll on the class
if (resourceInfo.getResourceClass().isAnnotationPresent(PermitAll.class)) {
// Do nothing
return;
}
// Authentication is required for non-annotated methods
if (!isAuthenticated(requestContext)) {
refuseRequest();
}
}
/**
* Perform authorization based on roles.
*
* @param rolesAllowed
* @param requestContext
*/
private void performAuthorization(String[] rolesAllowed,
ContainerRequestContext requestContext) {
if (rolesAllowed.length > 0 && !isAuthenticated(requestContext)) {
refuseRequest();
}
for (final String role : rolesAllowed) {
if (requestContext.getSecurityContext().isUserInRole(role)) {
return;
}
}
refuseRequest();
}
/**
* Check if the user is authenticated.
*
* @param requestContext
* @return
*/
private boolean isAuthenticated(final ContainerRequestContext requestContext) {
// Return true if the user is authenticated or false otherwise
// An implementation could be like:
// return requestContext.getSecurityContext().getUserPrincipal() != null;
}
/**
* Refuse the request.
*/
private void refuseRequest() {
throw new AccessDeniedException(
"You don't have permissions to perform this action.");
}
}
Note: The above implementation is based on the Jersey RolesAllowedDynamicFeature
. If you use Jersey, you don't need to write your own filter, just use the existing implementation.
All string data must be UTF-8 encoded.
$out = array(
'render' => utf8_encode($renderOutput),
'text' => utf8_encode($textOutput)
);
$out = json_encode($out);
die($out);
if let index = self.navigationController?.viewControllers.index(where: { $0 is MyViewController }) {
let vc = self.navigationController?.viewControllers[vcIndex] as! MyViewController
self.navigationController?.popToViewController(vc, animated: true)
} else {
self.navigationController?.popToRootViewController(animated: true)
}
#include <boost/algorithm/string.hpp>
#include <string>
std::string str = "Hello World";
boost::to_upper(str);
std::string newstr = boost::to_upper_copy<std::string>("Hello World");
If you are not using custom objects, but value types instead that implements Comparable protocol (Int, String etc..) you can simply do this:
myArray.sort(>) //sort descending order
An example:
struct MyStruct: Comparable {
var name = "Untitled"
}
func <(lhs: MyStruct, rhs: MyStruct) -> Bool {
return lhs.name < rhs.name
}
// Implementation of == required by Equatable
func ==(lhs: MyStruct, rhs: MyStruct) -> Bool {
return lhs.name == rhs.name
}
let value1 = MyStruct()
var value2 = MyStruct()
value2.name = "A New Name"
var anArray:[MyStruct] = []
anArray.append(value1)
anArray.append(value2)
anArray.sort(>) // This will sort the array in descending order
On Windows you use C:\Python27\python.exe
instead of python
.
If you add C:\Python27
to your path, you can shorten it to just python.exe
, but you do not need to do this.
$string="1,2,3,4,5";
$array=array_map('intval', explode(',', $string));
$array = implode("','",$array);
$query=mysqli_query($conn, "SELECT name FROM users WHERE id IN ('".$array."')");
NB: the syntax is:
SELECT * FROM table WHERE column IN('value1','value2','value3')
to pass the event
object:
<p id="p" onclick="doSomething(event)">
to get the clicked child element
(should be used with event
parameter:
function doSomething(e) {
e = e || window.event;
var target = e.target || e.srcElement;
console.log(target);
}
to pass the element
itself (DOMElement):
<p id="p" onclick="doThing(this)">
see live example on jsFiddle.
You can specify the name of the event
as above, but alternatively your handler can access the event
parameter as described here: "When the event handler is specified as an HTML attribute, the specified code is wrapped into a function with the following parameters". There's much more additional documentation at the link.
Whenever I have to do string manipulations in C#, I miss the good old Left
and Right
functions from Visual Basic, which are much simpler to use than Substring
.
So in most of my C# projects, I create extension methods for them:
public static class StringExtensions
{
public static string Left(this string str, int length)
{
return str.Substring(0, Math.Min(length, str.Length));
}
public static string Right(this string str, int length)
{
return str.Substring(str.Length - Math.Min(length, str.Length));
}
}
Note:
The Math.Min
part is there because Substring
throws an ArgumentOutOfRangeException
when the input string's length is smaller than the requested length, as already mentioned in some comments under previous answers.
string longString = "Long String";
// returns "Long";
string left1 = longString.Left(4);
// returns "Long String";
string left2 = longString.Left(100);
You could use something like a set from Programming in Lua:
function Set (list)
local set = {}
for _, l in ipairs(list) do set[l] = true end
return set
end
Then you could put your list in the Set and test for membership:
local items = Set { "apple", "orange", "pear", "banana" }
if items["orange"] then
-- do something
end
Or you could iterate over the list directly:
local items = { "apple", "orange", "pear", "banana" }
for _,v in pairs(items) do
if v == "orange" then
-- do something
break
end
end
It is about "seed". Same seeds give the same result.
Add a custom attribute to <input type="file" file-accept="jpg gif jpeg png bmp">
and read the filenames within javascript that matches the extension provided by the attribute file-accept
. This will be kind of bogus, as a text file with any of the above extension will erroneously deteted as image.
If calculating with dates summertime will cause often 1 uur more or one hour less than midnight (CEST). This causes 1 day difference when dates return. So the dates have to round to the nearest midnight. So the code will be (ths to jamisOn):
var d = new Date();
if(d.getHours() < 12) {
d.setHours(0,0,0,0); // previous midnight day
} else {
d.setHours(24,0,0,0); // next midnight day
}
This is beacuse the version of mysql to be connected is lower than the version of the mysql driver. Many people say that com.mysql.jdbc.Driver is changed to com.mysql.cj.jdbc.Driver , although this does not solve the problem, but it should also attract attention.
There are multiple php config files, but THIS is the one you need to edit:
/etc/php(version)?/fpm/pool.d/www.conf
uncomment the line that says:
catch_workers_output
That will allow PHPs stderr to go to php-fpm's error log instead of /dev/null.
For Xcode 7, brandonscript has the correct answer.
For earlier versions:
View Details...
CORS is Cross Origin Resource Sharing, you get this error if you are trying to access from one domain to another domain.
Try using JSONP. In your case, JSONP should work fine because it only uses the GET method.
Try something like this:
var url = "https://api.getevents.co/event?&lat=41.904196&lng=12.465974";
$http({
method: 'JSONP',
url: url
}).
success(function(status) {
//your code when success
}).
error(function(status) {
//your code when fails
});
self.navigationBar.barTintColor = [UIColor blueColor];
self.navigationBar.tintColor = [UIColor whiteColor];
self.navigationBar.translucent = NO;
// *barTintColor* sets the background color
// *tintColor* sets the buttons color
You can use one of following:
android:gravity="fill_horizontal|clip_vertical"
Or
android:gravity="fill_vertical|clip_horizontal"
Unpack the source from a working directory and cd into the file directory as root. Use the commands ./configure then make and make install
I suggest you use TO_CHAR()
when converting to string. In order to do that, you need to build a date first.
SELECT TO_CHAR(TO_DATE(DAY||'-'||MONTH||'-'||YEAR, 'dd-mm-yyyy'), 'dd-mm-yyyy') AS FORMATTED_DATE
FROM
(SELECT EXTRACT( DAY FROM
(SELECT TO_DATE('1/21/2000', 'mm/dd/yyyy')
FROM DUAL
)) AS DAY, TO_NUMBER(EXTRACT( MONTH FROM
(SELECT TO_DATE('1/21/2000', 'mm/dd/yyyy') FROM DUAL
)), 09) AS MONTH, EXTRACT(YEAR FROM
(SELECT TO_DATE('1/21/2000', 'mm/dd/yyyy') FROM DUAL
)) AS YEAR
FROM DUAL
);
It's the end statement for the alternative syntax:
foreach ($foo as $bar) :
...
endforeach;
Useful to make code more readable if you're breaking out of PHP:
<?php foreach ($foo as $bar) : ?>
<div ...>
...
</div>
<?php endforeach; ?>
The spec can be read as "ISO-8859-1" or "undefined". Your choice. It's known that many servers use ISO-8859-1 (like it or not) and will fail when you send something else.
For more information and a proposal to fix the situation, see http://greenbytes.de/tech/webdav/draft-reschke-basicauth-enc-latest.html
Go here :
C:\Program Files (x86)\Windows Kits\10
and do whatever you were supposed to go in the given directory for VS 13.
in the lib folder, you will find some versions, I copied the 32-bit glut.lib files in amd and x86 and 64-bit glut.lib in arm64 and x64 directories in um
folder for every version that I could find.
That worked for me.
EDIT : I tried this in windows 10, maybe you need to go to C:\Program Files (x86)\Windows Kits\8.1
folder for windows 8/8.1.
If you only want to verify that issuer of UserCert.pem
is actually Intermediate.pem
do the following (example uses: OpenSSL 1.1.1
):
openssl verify -no-CAfile -no-CApath -partial_chain -trusted Intermediate.pem UserCert.pem
and you will get:
UserCert.pem: OK
or
UserCert.pem: verification failed
List<T>
to IEnumerable<T>
List<T>
implements IEnumerable<T>
(and many other such as IList<T>, ICollection<T>
) therefore there is no need to convert a List back to IEnumerable since it already a IEnumerable<T>
.
Example:
public class Person
{
public int Id { get; set; }
public string Name { get; set; }
}
Person person1 = new Person() { Id = 1, Name = "Person 1" };
Person person2 = new Person() { Id = 2, Name = "Person 2" };
Person person3 = new Person() { Id = 3, Name = "Person 3" };
List<Person> people = new List<Person>() { person1, person2, person3 };
//Converting to an IEnumerable
IEnumerable<Person> IEnumerableList = people;
You can also use Enumerable.AsEnumerable()
method
IEnumerable<Person> iPersonList = people.AsEnumerable();
IEnumerable<T>
to List<T>
IEnumerable<Person> OriginallyIEnumerable = new List<Person>() { person1, person2 };
List<Person> convertToList = OriginallyIEnumerable.ToList();
This is useful in Entity Framework.
Serialization is taking a "live" object in memory and converting it to a format that can be stored somewhere (eg. in memory, on disk) and later "deserialized" back into a live object.
Adding to the solution of array.slice(); be aware that if you have multidimensional array sub-arrays will be copied by references. What you can do is to loop and slice() each sub-array individually
var arr = [[1,1,1],[2,2,2],[3,3,3]];
var arr2 = arr.slice();
arr2[0][1] = 55;
console.log(arr2[0][1]);
console.log(arr[0][1]);
function arrCpy(arrSrc, arrDis){
for(elm in arrSrc){
arrDis.push(arrSrc[elm].slice());
}
}
var arr3=[];
arrCpy(arr,arr3);
arr3[1][1] = 77;
console.log(arr3[1][1]);
console.log(arr[1][1]);
same things goes to array of objects, they will be copied by reference, you have to copy them manually
If you don't want to make the const
data member in class static, You can initialize the const
data member using the constructor of the class.
For example:
class Example{
const int x;
public:
Example(int n);
};
Example::Example(int n):x(n){
}
if there are multiple const
data members in class you can use the following syntax to initialize the members:
Example::Example(int n, int z):x(n),someOtherConstVariable(z){}
I'm up to the latest as of today and found the best way to resolve this is to do nothing...no typeRoots
no types
no exclude
no include
all the defaults seem to be working just fine. Actually it didn't work right for me until I removed them all. I had:
"exclude": [
"node_modules"
]
but that's in the defaults so I removed that.
I had:
"types": [
"node"
]
to get past some compiler warning. But now I removed that too.
The warning that shouldn't be is:
error TS2304: Cannot find name 'AsyncIterable'.
from node_modules\@types\graphql\subscription\subscribe.d.ts
which is very obnoxious so I did this in tsconfig so that it loads it:
"compilerOptions": {
"target": "esnext",
}
since it's in the esnext set. I'm not using it directly so no worries here about compatibility just yet. Hope that doesn't burn me later.
You could run: mvn exec:exec -Dexec.args="arg1"
.
This will pass the argument arg1 to your program.
You should specify the main class fully qualified, for example, a Main.java that is in a package test would need
mvn exec:java -Dexec.mainClass=test.Main
By using the -f
parameter, as decribed here, you can also run it from other directories.
mvn exec:java -Dexec.mainClass=test.Main -f folder/pom.xm
For multiple arguments, simply separate them with a space as you would at the command line.
mvn exec:java -Dexec.mainClass=test.Main -Dexec.args="arg1 arg2 arg3"
For arguments separated with a space, you can group using 'argument separated with space'
inside the quotation marks.
mvn exec:java -Dexec.mainClass=test.Main -Dexec.args="'argument separated with space' 'another one'"
You can find it at link:
C:\Windows\assembly\GAC_MSIL\Microsoft.Office.Interop.Word\15.0.0.0__71e9bce111e9429c\Microsoft.Office.Interop.Word.dll
Browse it then add references
Just append a div
with that class to body
, then remove it when you're done:
// Show the backdrop
$('<div class="modal-backdrop"></div>').appendTo(document.body);
// Remove it (later)
$(".modal-backdrop").remove();
Live Example:
$("input").click(function() {_x000D_
var bd = $('<div class="modal-backdrop"></div>');_x000D_
bd.appendTo(document.body);_x000D_
setTimeout(function() {_x000D_
bd.remove();_x000D_
}, 2000);_x000D_
});
_x000D_
<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" type="text/css" />_x000D_
<script src="//code.jquery.com/jquery.min.js"></script>_x000D_
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>_x000D_
<p>Click the button to get the backdrop for two seconds.</p>_x000D_
<input type="button" value="Click Me">
_x000D_
Precision, Scale, and Length in the SQL Server 2000 documentation reads:
Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2.
Working with floats is bit messy:
This as many other 'trivial' layout tricks can be done with flexbox.
div.container {
display: flex;
justify-content: space-between;
}
In 2017 I think this is preferred solution (over float) if you don't have to support legacy browsers: https://caniuse.com/#feat=flexbox
Check fiddle how different float usages compares to flexbox ("may include some competing answers"): https://jsfiddle.net/b244s19k/25/. If you still need to stick with float I recommended third version of course.
Well, it's too late to post an answer, but I feel my explanation will be easy to understand for beginners with Angular. The following is one of the examples that I give during my presentation.
Consider your angular Application as a building. A building can have N
number of apartments in it. An apartment is considered as a module. An Apartment can then have N
number of rooms which correspond to the building blocks of an Angular application named components.
Now each apartment (Module)` will have rooms (Components), lifts (Services) to enable larger movement in and out the apartments, wires (Pipes) to transform around and make it useful in the apartments.
You will also have places like swimming pool, tennis court which are being shared by all building residents. So these can be considered as components inside SharedModule.
Basically, the difference is as follows,
Follow my slides to understand the building blocks of an Angular application
Here is my session on Building Blocks of Angular for beginners
if it's too long for one page, use the longtable
package. and if it's too wide for the page, use p{width}
in place of l,r, or c for the column specifier. you can also go smaller than \small
, i.e. \footnotesize
and \tiny
. I would consult the setspace package for options on how to remove the double space, though it's probably \singlespace
or something like that.
Data type really concerns. I have tested different scenarios on sending the payload from a RESTful resource. For encoding I have used Base64(Apache) and for compression GZIP(java.utils.zip.*).The payload contains information about film,an image and an audio file. I have compressed and encoded the image and audio files which drastically degraded the performance. Encoding before compression turned out well. Image and audio content were sent as encoded and compressed bytes [] .
Simply create an instance of Class2
and call the desired method.
Suggested reading: http://docs.oracle.com/javase/tutorial/java/javaOO/
-apple-system allows you to pick San Francisco in Safari. BlinkMacSystemFont is the corresponding alternative for Chrome.
font-family: -apple-system, BlinkMacSystemFont, sans-serif;
Roboto or Helvetica Neue could be inserted as fallbacks even before sans-serif.
https://www.smashingmagazine.com/2015/11/using-system-ui-fonts-practical-guide/#details-of-approach-a (how or previously http://furbo.org/2015/07/09/i-left-my-system-fonts-in-san-francisco/ do a great job explaining the details.
df =df['Date'].dt.dayofweek
dayofweek
is in numeric format
You can use TreeSet class in java.util.*. It is working like Binary search tree, so it is already sorted. TreeSet class implements Iterable, Collection and Set interfaces. You can traverse through the tree with iterator like a set.
TreeSet<String> treeSet = new TreeSet<String>();
Iterator<String> it = treeSet.Iterator();
while(it.hasNext()){
...
}
It is worth trying these 2 options below while we're still waiting for the fix in FF35:
select {
-moz-appearance: scrollbartrack-vertical;
}
or
select {
-moz-appearance: treeview;
}
They will just hide any arrow background image you have put in to custom style your select element. So you get a bog standard browser arrow instead of a horrible combo of both browser arrow and your own custom arrow.
Well, you can at least tell Json.NET to include the type name: http://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_TypeNameHandling.htm . Newtonsoft.Json.JsonSerializer jser = new Newtonsoft.Json.JsonSerializer();
jser.TypeNameHandling = TypeNameHandling.Objects;
The type will be included at the beginning in the "$type" property of the object.
This is not exactly what you are looking for, but it was good enough for me when facing a similiar problem.
From WWDC 2015 there is a session on Implementing UI Designs in Interface Builder. Around the 32min mark he says that you always want to make your @IBOutlet
strong.
That only works for numbers less than 1.
select to_char(12.34, '0D99') from dual;
-- Result: #####
This won't work.
You could do something like this but this results in leading whitespaces:
select to_char(12.34, '999990D99') from dual;
-- Result: ' 12,34'
Ultimately, you could add a TRIM to get rid of the whitespaces again but I wouldn't consider that a proper solution either...
select trim(to_char(12.34, '999990D99')) from dual;
-- Result: 12,34
Again, this will only work for numbers with 6 digits max.
Edit: I wanted to add this as a comment on DCookie's suggestion but I can't.
This is part of my copy function:
eval echo $(echo '$'"$#")
To use in scripts, do this:
a=$(eval echo $(echo '$'"$#"))
Explanation (most nested first):
$(echo '$'"$#")
returns $[nr]
where [nr]
is the number of parameters. E.g. the string $123
(unexpanded).echo $123
returns the value of 123rd parameter, when evaluated.eval
just expands $123
to the value of the parameter, e.g. last_arg
. This is interpreted as a string and returned.Works with Bash as of mid 2015.
To expand on the previously written answers, if you want a single solution which will work across Python versions 2 and 3, you can use the following:
try:
reload # Python 2.7
except NameError:
try:
from importlib import reload # Python 3.4+
except ImportError:
from imp import reload # Python 3.0 - 3.3
Perl versions 5.10 and later support subsidiary vertical and horizontal character classes, \v
and \h
, as well as the generic whitespace character class \s
The cleanest solution is to use the horizontal whitespace character class \h
. This will match tab and space from the ASCII set, non-breaking space from extended ASCII, or any of these Unicode characters
U+0009 CHARACTER TABULATION
U+0020 SPACE
U+00A0 NO-BREAK SPACE (not matched by \s)
U+1680 OGHAM SPACE MARK
U+2000 EN QUAD
U+2001 EM QUAD
U+2002 EN SPACE
U+2003 EM SPACE
U+2004 THREE-PER-EM SPACE
U+2005 FOUR-PER-EM SPACE
U+2006 SIX-PER-EM SPACE
U+2007 FIGURE SPACE
U+2008 PUNCTUATION SPACE
U+2009 THIN SPACE
U+200A HAIR SPACE
U+202F NARROW NO-BREAK SPACE
U+205F MEDIUM MATHEMATICAL SPACE
U+3000 IDEOGRAPHIC SPACE
The vertical space pattern \v
is less useful, but matches these characters
U+000A LINE FEED
U+000B LINE TABULATION
U+000C FORM FEED
U+000D CARRIAGE RETURN
U+0085 NEXT LINE (not matched by \s)
U+2028 LINE SEPARATOR
U+2029 PARAGRAPH SEPARATOR
There are seven vertical whitespace characters which match \v
and eighteen horizontal ones which match \h
. \s
matches twenty-three characters
All whitespace characters are either vertical or horizontal with no overlap, but they are not proper subsets because \h
also matches U+00A0 NO-BREAK SPACE, and \v
also matches U+0085 NEXT LINE, neither of which are matched by \s
Another reason this error might occur is: there is no index.html
in .../YourApp/www/
!
I just followed the ionic guide, and one of the steps is:
$ rm www/index.html
On iOS this is no problem as during the build the compiler takes some default HTML instead. However, when building for android, NO example index.html
is used. Took me sometime to find out ("WHY does it work on iOS, but not on android...?)
Easy solution: create a index.html, save it under .../YourApp/www
, rebuild ...et voila!
My shell script calls the sql file and executes it. The spool output had the SQL query at the beginning followed by the query result.
This did not resolve my problem:
set echo off
This resolved my problem:
set verify off
FileNotFound in this case means you got a 404 from your server - could it be that the server does not like "POST" requests?
You say your website is in http://localhost/mywebsite
, and let's say that your image is inside a subfolder named pictures/
:
Absolute path
If you use an absolute path, /
would point to the root of the site, not the root of the document: localhost
in your case. That's why you need to specify your document's folder in order to access the pictures folder:
"/mywebsite/pictures/picture.png"
And it would be the same as:
"http://localhost/mywebsite/pictures/picture.png"
Relative path
A relative path is always relative to the root of the document, so if your html is at the same level of the directory, you'd need to start the path directly with your picture's directory name:
"pictures/picture.png"
But there are other perks with relative paths:
dot-slash (./
)
Dot (.
) points to the same directory and the slash (/
) gives access to it:
So this:
"pictures/picture.png"
Would be the same as this:
"./pictures/picture.png"
Double-dot-slash (../
)
In this case, a double dot (..
) points to the upper directory and likewise, the slash (/
) gives you access to it. So if you wanted to access a picture that is on a directory one level above of the current directory your document is, your URL would look like this:
"../picture.png"
You can play around with them as much as you want, a little example would be this:
Let's say you're on directory A
, and you want to access directory X
.
- root
|- a
|- A
|- b
|- x
|- X
Your URL would look either:
Absolute path
"/x/X/picture.png"
Or:
Relative path
"./../x/X/picture.png"
On performance you keep focusing on select.
Shared does not block reads.
Shared lock blocks update.
If you have hundreds of shared locks it is going to take an update a while to get an exclusive lock as it must wait for shared locks to clear.
By default a select (read) takes a shared lock.
Shared (S) locks allow concurrent transactions to read (SELECT) a resource.
A shared lock as no effect on other selects (1 or a 1000).
The difference is how the nolock versus shared lock effects update or insert operation.
No other transactions can modify the data while shared (S) locks exist on the resource.
A shared lock blocks an update!
But nolock does not block an update.
This can have huge impacts on performance of updates. It also impact inserts.
Dirty read (nolock) just sounds dirty. You are never going to get partial data. If an update is changing John to Sally you are never going to get Jolly.
I use shared locks a lot for concurrency. Data is stale as soon as it is read. A read of John that changes to Sally the next millisecond is stale data. A read of Sally that gets rolled back John the next millisecond is stale data. That is on the millisecond level. I have a dataloader that take 20 hours to run if users are taking shared locks and 4 hours to run is users are taking no lock. Shared locks in this case cause data to be 16 hours stale.
Don't use nolocks wrong. But they do have a place. If you are going to cut a check when a byte is set to 1 and then set it to 2 when the check is cut - not a time for a nolock.
This will depend on the device you're using. If you're using a pdf device, you can do this:
pdf( "mygraph.pdf", width = 11, height = 8 )
plot( x, y )
You can then divide up the space in the pdf using the mfrow parameter like this:
par( mfrow = c(2,2) )
That makes a pdf with four panels available for plotting. Unfortunately, some of the devices take different units than others. For example, I think that X11 uses pixels, while I'm certain that pdf uses inches. If you'd just like to create several devices and plot different things to them, you can use dev.new(), dev.list(), and dev.next().
Other devices that might be useful include:
There's a list of all of the devices here.
var someParam = xxxxxxx;
commentbtn.click(function(){
alert(someParam );
});
I also faced problem in .Net Remoting Service in C#.
I got it solved in 3 steps:
or you can also do ( for pem file )
scp -r -i file.pem [email protected]:/home/backup /home/user/Desktop/
issue the command:
SET time_zone = 'America/New_York';
(Or whatever time zone GMT+1 is.: http://www.php.net/manual/en/timezones.php)
This is the command to set the MySQL timezone for an individual client, assuming that your clients are spread accross multiple time zones.
This command should be executed before every SQL command involving dates. If your queries go thru a class, then this is easy to implement.
With Python 3.5 you could do it this way:
import os
import subprocess
my_env = {**os.environ, 'PATH': '/usr/sbin:/sbin:' + os.environ['PATH']}
subprocess.Popen(my_command, env=my_env)
Here we end up with a copy of os.environ
and overridden PATH
value.
It was made possible by PEP 448 (Additional Unpacking Generalizations).
Another example. If you have a default environment (i.e. os.environ
), and a dict you want to override defaults with, you can express it like this:
my_env = {**os.environ, **dict_with_env_variables}
You can use "cat" command to open file and use mouse to copy
That's strange, it definitely works for me:
from matplotlib import pyplot as plt
plt.figure(figsize = (20,2))
plt.imshow(random.rand(8, 90), interpolation='nearest')
I am using the "MacOSX" backend, btw.
public static byte[] hexToBytes(String string) {
int length = string.length();
byte[] data = new byte[length / 2];
for (int i = 0; i < length; i += 2) {
data[i / 2] = (byte)((Character.digit(string.charAt(i), 16) << 4) + Character.digit(string.charAt(i + 1), 16));
}
return data;
}
FileInputStream will load a the file path you pass to the constructor as relative from the working directory of the Java process. Usually in a web container, this is something like the bin
folder.
getResourceAsStream()
will load a file path relative from your application's classpath.
Here is another way to loop through XML elements using JDOM.
List<Element> nodeNodes = inputNode.getChildren();
if (nodeNodes != null) {
for (Element nodeNode : nodeNodes) {
List<Element> elements = nodeNode.getChildren(elementName);
if (elements != null) {
elements.size();
nodeNodes.removeAll(elements);
}
}
You don't really need to convert that into a set:
cols = [col for col in df.columns if col not in ['B', 'D']]
df2 = df[cols]
If not HTML
, then UTF-8
is not recommended. koi8-r
and windows-1251
only without problems. So use html mail.
$headers['Content-Type']='text/html; charset=UTF-8';
$body='<html><head><meta charset="UTF-8"><title>ESP Notufy - ESP ?????????</title></head><body>'.$text.'</body></html>';
$mail_object=& Mail::factory('smtp',
array ('host' => $host,
'auth' => true,
'username' => $username,
'password' => $password));
$mail_object->send($recipents, $headers, $body);
}
If you only have one input you can use the form tag.
<form ng-submit="myFunc()" ...>
If you have more than one input, or don't want to use the form tag, or want to attach the enter-key functionality to a specific field, you can inline it to a specific input as follows:
<input ng-keyup="$event.keyCode == 13 && myFunc()" ...>
Be sure to check Xcode Preferences -> Locations.
The Command Line Tools I had selected was for the previous version of Xcode (8.2.1 instead of 10.1)
You cannot set focus to a control if it has not been rendered. Form.Load() occurs before the controls are rendered.
Go to the form's events and double click the "Shown" event. In the form's shown event handler call the control.Focus() method.
private void myForm_Shown(object sender, EventArgs e)
{
// Call textbox's focus method
txtMyTextbox.Focus();
}
Complete tutorial here
Demo link
JavaScript
$('.owl-carousel').owlCarousel({
margin: 10,
nav: true,
navText:["<div class='nav-btn prev-slide'></div>","<div class='nav-btn next-slide'></div>"],
responsive: {
0: {
items: 1
},
600: {
items: 3
},
1000: {
items: 5
}
}
});
CSS Style for navigation
.owl-carousel .nav-btn{
height: 47px;
position: absolute;
width: 26px;
cursor: pointer;
top: 100px !important;
}
.owl-carousel .owl-prev.disabled,
.owl-carousel .owl-next.disabled{
pointer-events: none;
opacity: 0.2;
}
.owl-carousel .prev-slide{
background: url(nav-icon.png) no-repeat scroll 0 0;
left: -33px;
}
.owl-carousel .next-slide{
background: url(nav-icon.png) no-repeat scroll -24px 0px;
right: -33px;
}
.owl-carousel .prev-slide:hover{
background-position: 0px -53px;
}
.owl-carousel .next-slide:hover{
background-position: -24px -53px;
}
You could specify type like this:
[string[]] $a = "This", "Is", "a", "cat"
Checking the type:
$a.GetType()
Confirms:
IsPublic IsSerial Name BaseType -------- -------- ---- -------- True True String[] System.Array
Outputting $a:
PS C:\> $a This Is a cat
Closures are hard to explain because they are used to make some behaviour work that everybody intuitively expects to work anyway. I find the best way to explain them (and the way that I learned what they do) is to imagine the situation without them:
const makePlus = function(x) {
return function(y) { return x + y; };
}
const plus5 = makePlus(5);
console.log(plus5(3));
_x000D_
What would happen here if JavaScript didn't know closures? Just replace the call in the last line by its method body (which is basically what function calls do) and you get:
console.log(x + 3);
Now, where's the definition of x
? We didn't define it in the current scope. The only solution is to let plus5
carry its scope (or rather, its parent's scope) around. This way, x
is well-defined and it is bound to the value 5.
If you are looking to simply show windows version in a batch file such as Windows 10 etc.
you can simply use the ver
command
just type ver
and the windows version will be displayed
It is possible to do (in the deployed repository):
git fetch
// git fetch will download all the recent changes, but it will not put it in your current checked out code (working area).
Followed by:
git checkout origin/master -- path/to/file
// git checkout <local repo name (default is origin)>/<branch name> -- path/to/file will checkout the particular file from the downloaded changes (origin/master).
You can negate a time.Duration
:
then := now.Add(- dur)
You can even compare a time.Duration
against 0
:
if dur > 0 {
dur = - dur
}
then := now.Add(dur)
You can see a working example at http://play.golang.org/p/ml7svlL4eW
This is what I do on mine
$(document).ready(function() {
if ($('#userForm').valid()) {
var formData = $("#userForm").serializeArray();
$.ajax({
url: 'http://www.example.com/user/' + $('#Id').val() + '?callback=?',
type: "GET",
data: formData,
dataType: "jsonp",
jsonpCallback: "localJsonpCallback"
});
});
function localJsonpCallback(json) {
if (!json.Error) {
$('#resultForm').submit();
} else {
$('#loading').hide();
$('#userForm').show();
alert(json.Message);
}
}
There is one event which is default associate with any webcontrol. For example, in case of Button click event, in case of Check box CheckChangedEvent is there. So in case of AutoPostBack true these events are called by default and event handle at server side.
Microsoft now provides Microsoft.Data.Sqlite as a first-party SQLite solution for .NET, which is provided as part of ASP.NET Core. The license is the Apache License, Version 2.0.
* Disclaimer: I have not actually tried using this myself yet, but there is some documentation provided on Microsoft Docs here for using it with .NET Core and UWP.
You can also use .reverse(). It's a native array function
<div ng-repeat="friend in friends.reverse()">{{friend.name}}</div>
This is not an answer, but too long for a comment.
In reply to JP's answers / comments, I have run the following test to compare the performance of the 2 methods. The Profiler
object is a custom class - but in summary, it uses a kernel32 function which is fairly accurate (Private Declare Sub GetLocalTime Lib "kernel32" (lpSystemTime As SYSTEMTIME)
).
Sub test()
Dim origNum As String
Dim creditOrDebit As String
Dim b As Boolean
Dim p As Profiler
Dim i As Long
Set p = New_Profiler
origNum = "30062600006"
creditOrDebit = "D"
p.startTimer ("nested_ifs")
For i = 1 To 1000000
If creditOrDebit = "D" Then
If origNum = "006260006" Then
b = True
ElseIf origNum = "30062600006" Then
b = True
End If
End If
Next i
p.stopTimer ("nested_ifs")
p.startTimer ("or_and")
For i = 1 To 1000000
If (origNum = "006260006" Or origNum = "30062600006") And creditOrDebit = "D" Then
b = True
End If
Next i
p.stopTimer ("or_and")
p.printReport
End Sub
The results of 5 runs (in ms for 1m loops):
20-Jun-2012 19:28:25
nested_ifs (x1): 156 - Last Run: 156 - Average Run: 156
or_and (x1): 125 - Last Run: 125 - Average Run: 12520-Jun-2012 19:28:26
nested_ifs (x1): 156 - Last Run: 156 - Average Run: 156
or_and (x1): 125 - Last Run: 125 - Average Run: 12520-Jun-2012 19:28:27
nested_ifs (x1): 140 - Last Run: 140 - Average Run: 140
or_and (x1): 125 - Last Run: 125 - Average Run: 12520-Jun-2012 19:28:28
nested_ifs (x1): 140 - Last Run: 140 - Average Run: 140
or_and (x1): 141 - Last Run: 141 - Average Run: 14120-Jun-2012 19:28:29
nested_ifs (x1): 156 - Last Run: 156 - Average Run: 156
or_and (x1): 125 - Last Run: 125 - Average Run: 125
Note
If creditOrDebit
is not "D"
, JP's code runs faster (around 60ms vs. 125ms for the or/and code).
You don't have any error in either of your queries. My guess is the following:
defaultMember
already is an alias - it doesn't need to be the name of the exported function/thing. Just do
import alias from 'my-module';
Alternatively you can do
import {default as alias} from 'my-module';
but that's rather esoteric.
You can put simply a flag variable, in this case is_successed.
def preorder_view(request, pk, template_name='preorders/preorder_form.html'):
is_successed=0
formset = PreorderHasProductsForm(request.POST)
client= get_object_or_404(Client, pk=pk)
if request.method=='POST':
#populate the form with data from the request
# formset = PreorderHasProductsForm(request.POST)
if formset.is_valid():
is_successed=1
preorder_date=formset.cleaned_data['preorder_date']
product=formset.cleaned_data['preorder_has_products']
return render(request, template_name, {'preorder_date':preorder_date,'product':product,'is_successed':is_successed,'formset':formset})
return render(request, template_name, {'object':client,'formset':formset})
afterwards in your template you can just put the code below
{%if is_successed == 1 %}
<h1>{{preorder_date}}</h1>
<h2> {{product}}</h2>
{%endif %}
The DNS server seems out of order. You can use another DNS server such as 8.8.8.8. Put nameserver 8.8.8.8
to the first line of /etc/resolv.conf
.
With jQuery 3.x use something like:
$('<img src="'+ imgPath +'">').on('load', function() {
$(this).width(some).height(some).appendTo('#some_target');
});
Current month:
SELECT * FROM jokes WHERE YEAR(date) = YEAR(NOW()) AND MONTH(date)=MONTH(NOW());
Current week:
SELECT * FROM jokes WHERE WEEKOFYEAR(date) = WEEKOFYEAR(NOW());
Current day:
SELECT * FROM jokes WHERE YEAR(date) = YEAR(NOW()) AND MONTH(date) = MONTH(NOW()) AND DAY(date) = DAY(NOW());
This will select only current month, really week and really only today :-)
Microsoft introduced schema in version 2008. For those who didn’t know about schema, and those who didn’t care, objects were put into a default schema dbo
.
dbo
stands for DataBase Owner, but that’s not really important.
Think of a schema as you would a folder for files:
You can always access any object from any schema.
Because dbo
is the default, you normally don’t need to specify it within a single database:
SELECT * FROM customers;
SELECT * FROM dbo.customers;
mean the same thing.
I am inclined to disagree with the notion of always using the dbo.
prefix, since the more you clutter your code with unnecessary detail, the harder it is to read and manage.
For the most part, you can ignore the schema. However, the schema will make itself apparent in the following situations:
If you view the tables in either the object navigator or in an external application, such as Microsoft Excel or Access, you will see the dbo.
prefix. You can still ignore it.
If you reference a table in another database, you will need its full name in the form database.schema.table
:
SELECT * FROM bookshop.dbo.customers;
For historical reasons, if you write a user defined scalar function, you will need to call it with the schema prefix:
CREATE FUNCTION tax(@amount DECIMAL(6,2) RETURNS DECIMAL(6,2) AS
BEGIN
RETURN @amount * 0.1;
END;
GO
SELECT total, dbo.tax(total) FROM pricelist;
This does not apply to other objects, such as table functions, procedures and views.
You can use schema to overcome naming conflicts. For example, if every user has a personal schema, they can create additional objects without having to fight with other users over the name.
Serialize and Deserialize (XML/JSON):
public static T XmlDeserialize<T>(this string toDeserialize)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
using(StringReader textReader = new StringReader(toDeserialize))
{
return (T)xmlSerializer.Deserialize(textReader);
}
}
public static string XmlSerialize<T>(this T toSerialize)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
using(StringWriter textWriter = new StringWriter())
{
xmlSerializer.Serialize(textWriter, toSerialize);
return textWriter.ToString();
}
}
public static T JsonDeserialize<T>(this string toDeserialize)
{
return JsonConvert.DeserializeObject<T>(toDeserialize);
}
public static string JsonSerialize<T>(this T toSerialize)
{
return JsonConvert.SerializeObject(toSerialize);
}
A sample command that exhibits the symptom: sed 's/./@/' <<<$'\xfc'
fails, because byte 0xfc
is not a valid UTF-8 char.
Note that, by contrast, GNU sed
(Linux, but also installable on macOS) simply passes the invalid byte through, without reporting an error.
Using the formerly accepted answer is an option if you don't mind losing support for your true locale (if you're on a US system and you never need to deal with foreign characters, that may be fine.)
However, the same effect can be had ad-hoc for a single command only:
LC_ALL=C sed -i "" 's|"iphoneos-cross","llvm-gcc:-O3|"iphoneos-cross","clang:-Os|g' Configure
Note: What matters is an effective LC_CTYPE
setting of C
, so LC_CTYPE=C sed ...
would normally also work, but if LC_ALL
happens to be set (to something other than C
), it will override individual LC_*
-category variables such as LC_CTYPE
. Thus, the most robust approach is to set LC_ALL
.
However, (effectively) setting LC_CTYPE
to C
treats strings as if each byte were its own character (no interpretation based on encoding rules is performed), with no regard for the - multibyte-on-demand - UTF-8 encoding that OS X employs by default, where foreign characters have multibyte encodings.
In a nutshell: setting LC_CTYPE
to C
causes the shell and utilities to only recognize basic English letters as letters (the ones in the 7-bit ASCII range), so that foreign chars. will not be treated as letters, causing, for instance, upper-/lowercase conversions to fail.
Again, this may be fine if you needn't match multibyte-encoded characters such as é
, and simply want to pass such characters through.
If this is insufficient and/or you want to understand the cause of the original error (including determining what input bytes caused the problem) and perform encoding conversions on demand, read on below.
The problem is that the input file's encoding does not match the shell's.
More specifically, the input file contains characters encoded in a way that is not valid in UTF-8 (as @Klas Lindbäck stated in a comment) - that's what the sed
error message is trying to say by invalid byte sequence
.
Most likely, your input file uses a single-byte 8-bit encoding such as ISO-8859-1
, frequently used to encode "Western European" languages.
Example:
The accented letter à
has Unicode codepoint 0xE0
(224) - the same as in ISO-8859-1
. However, due to the nature of UTF-8 encoding, this single codepoint is represented as 2 bytes - 0xC3 0xA0
, whereas trying to pass the single byte 0xE0
is invalid under UTF-8.
Here's a demonstration of the problem using the string voilà
encoded as ISO-8859-1
, with the à
represented as one byte (via an ANSI-C-quoted bash string ($'...'
) that uses \x{e0}
to create the byte):
Note that the sed
command is effectively a no-op that simply passes the input through, but we need it to provoke the error:
# -> 'illegal byte sequence': byte 0xE0 is not a valid char.
sed 's/.*/&/' <<<$'voil\x{e0}'
To simply ignore the problem, the above LCTYPE=C
approach can be used:
# No error, bytes are passed through ('á' will render as '?', though).
LC_CTYPE=C sed 's/.*/&/' <<<$'voil\x{e0}'
If you want to determine which parts of the input cause the problem, try the following:
# Convert bytes in the 8-bit range (high bit set) to hex. representation.
# -> 'voil\x{e0}'
iconv -f ASCII --byte-subst='\x{%02x}' <<<$'voil\x{e0}'
The output will show you all bytes that have the high bit set (bytes that exceed the 7-bit ASCII range) in hexadecimal form. (Note, however, that that also includes correctly encoded UTF-8 multibyte sequences - a more sophisticated approach would be needed to specifically identify invalid-in-UTF-8 bytes.)
Performing encoding conversions on demand:
Standard utility iconv
can be used to convert to (-t
) and/or from (-f
) encodings; iconv -l
lists all supported ones.
Examples:
Convert FROM ISO-8859-1
to the encoding in effect in the shell (based on LC_CTYPE
, which is UTF-8
-based by default), building on the above example:
# Converts to UTF-8; output renders correctly as 'voilà'
sed 's/.*/&/' <<<"$(iconv -f ISO-8859-1 <<<$'voil\x{e0}')"
Note that this conversion allows you to properly match foreign characters:
# Correctly matches 'à' and replaces it with 'ü': -> 'voilü'
sed 's/à/ü/' <<<"$(iconv -f ISO-8859-1 <<<$'voil\x{e0}')"
To convert the input BACK to ISO-8859-1
after processing, simply pipe the result to another iconv
command:
sed 's/à/ü/' <<<"$(iconv -f ISO-8859-1 <<<$'voil\x{e0}')" | iconv -t ISO-8859-1
I also had this problem. To sort out the problem of spaces in the middle of the string this line of code always works:
String field = field.replaceAll("\\s+", "");
If the long string to multiple lines confuses you. Then you may install mz-tools addin which is a freeware and has the utility which splits the line for you.
If your string looks like below
SqlQueryString = "Insert into Employee values(" & txtEmployeeNo.Value & "','" & txtContractStartDate.Value & "','" & txtSeatNo.Value & "','" & txtFloor.Value & "','" & txtLeaves.Value & "')"
Simply select the string > right click on VBA IDE > Select MZ-tools > Split Lines
Just put that line in the bat file...
Alternatively you can even make a shortcut for svcutil.exe, then add the arguments in the 'target' window.
I solved this problem following vestigal's tips here:
Can I set an unlimited length for maxJsonLength in web.config?
When I needed to post a large json to an action in a controller, I would get the famous "Error during deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.\r\nParameter name: input value provider".
What I did is create a new ValueProviderFactory, LargeJsonValueProviderFactory, and set the MaxJsonLength = Int32.MaxValue in the GetDeserializedObject method
public sealed class LargeJsonValueProviderFactory : ValueProviderFactory
{
private static void AddToBackingStore(LargeJsonValueProviderFactory.EntryLimitedDictionary backingStore, string prefix, object value)
{
IDictionary<string, object> dictionary = value as IDictionary<string, object>;
if (dictionary != null)
{
foreach (KeyValuePair<string, object> keyValuePair in (IEnumerable<KeyValuePair<string, object>>) dictionary)
LargeJsonValueProviderFactory.AddToBackingStore(backingStore, LargeJsonValueProviderFactory.MakePropertyKey(prefix, keyValuePair.Key), keyValuePair.Value);
}
else
{
IList list = value as IList;
if (list != null)
{
for (int index = 0; index < list.Count; ++index)
LargeJsonValueProviderFactory.AddToBackingStore(backingStore, LargeJsonValueProviderFactory.MakeArrayKey(prefix, index), list[index]);
}
else
backingStore.Add(prefix, value);
}
}
private static object GetDeserializedObject(ControllerContext controllerContext)
{
if (!controllerContext.HttpContext.Request.ContentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
return (object) null;
string end = new StreamReader(controllerContext.HttpContext.Request.InputStream).ReadToEnd();
if (string.IsNullOrEmpty(end))
return (object) null;
var serializer = new JavaScriptSerializer {MaxJsonLength = Int32.MaxValue};
return serializer.DeserializeObject(end);
}
/// <summary>Returns a JSON value-provider object for the specified controller context.</summary>
/// <returns>A JSON value-provider object for the specified controller context.</returns>
/// <param name="controllerContext">The controller context.</param>
public override IValueProvider GetValueProvider(ControllerContext controllerContext)
{
if (controllerContext == null)
throw new ArgumentNullException("controllerContext");
object deserializedObject = LargeJsonValueProviderFactory.GetDeserializedObject(controllerContext);
if (deserializedObject == null)
return (IValueProvider) null;
Dictionary<string, object> dictionary = new Dictionary<string, object>((IEqualityComparer<string>) StringComparer.OrdinalIgnoreCase);
LargeJsonValueProviderFactory.AddToBackingStore(new LargeJsonValueProviderFactory.EntryLimitedDictionary((IDictionary<string, object>) dictionary), string.Empty, deserializedObject);
return (IValueProvider) new DictionaryValueProvider<object>((IDictionary<string, object>) dictionary, CultureInfo.CurrentCulture);
}
private static string MakeArrayKey(string prefix, int index)
{
return prefix + "[" + index.ToString((IFormatProvider) CultureInfo.InvariantCulture) + "]";
}
private static string MakePropertyKey(string prefix, string propertyName)
{
if (!string.IsNullOrEmpty(prefix))
return prefix + "." + propertyName;
return propertyName;
}
private class EntryLimitedDictionary
{
private static int _maximumDepth = LargeJsonValueProviderFactory.EntryLimitedDictionary.GetMaximumDepth();
private readonly IDictionary<string, object> _innerDictionary;
private int _itemCount;
public EntryLimitedDictionary(IDictionary<string, object> innerDictionary)
{
this._innerDictionary = innerDictionary;
}
public void Add(string key, object value)
{
if (++this._itemCount > LargeJsonValueProviderFactory.EntryLimitedDictionary._maximumDepth)
throw new InvalidOperationException("JsonValueProviderFactory_RequestTooLarge");
this._innerDictionary.Add(key, value);
}
private static int GetMaximumDepth()
{
NameValueCollection appSettings = ConfigurationManager.AppSettings;
if (appSettings != null)
{
string[] values = appSettings.GetValues("aspnet:MaxJsonDeserializerMembers");
int result;
if (values != null && values.Length > 0 && int.TryParse(values[0], out result))
return result;
}
return 1000;
}
}
}
Then, in the Application_Start method from Global.asax.cs, replace the ValueProviderFactory with the new one:
protected void Application_Start()
{
...
//Add LargeJsonValueProviderFactory
ValueProviderFactory jsonFactory = null;
foreach (var factory in ValueProviderFactories.Factories)
{
if (factory.GetType().FullName == "System.Web.Mvc.JsonValueProviderFactory")
{
jsonFactory = factory;
break;
}
}
if (jsonFactory != null)
{
ValueProviderFactories.Factories.Remove(jsonFactory);
}
var largeJsonValueProviderFactory = new LargeJsonValueProviderFactory();
ValueProviderFactories.Factories.Add(largeJsonValueProviderFactory);
}
As it was already mentioned: READONLY
does not work for <input type='checkbox'>
and <select>...</select>
.
If you have a Form
with disabled checkboxes / selects AND need them to be submitted, you can use jQuery:
$('form').submit(function(e) {
$(':disabled').each(function(e) {
$(this).removeAttr('disabled');
})
});
This code removes the disabled
attribute from all elements on submit.
If all you are trying to do is solve the content length error from amazon then you could just read the bytes from the input stream to a Long and add that to the metadata.
/*
* Obtain the Content length of the Input stream for S3 header
*/
try {
InputStream is = event.getFile().getInputstream();
contentBytes = IOUtils.toByteArray(is);
} catch (IOException e) {
System.err.printf("Failed while reading bytes from %s", e.getMessage());
}
Long contentLength = Long.valueOf(contentBytes.length);
ObjectMetadata metadata = new ObjectMetadata();
metadata.setContentLength(contentLength);
/*
* Reobtain the tmp uploaded file as input stream
*/
InputStream inputStream = event.getFile().getInputstream();
/*
* Put the object in S3
*/
try {
s3client.putObject(new PutObjectRequest(bucketName, keyName, inputStream, metadata));
} catch (AmazonServiceException ase) {
System.out.println("Error Message: " + ase.getMessage());
System.out.println("HTTP Status Code: " + ase.getStatusCode());
System.out.println("AWS Error Code: " + ase.getErrorCode());
System.out.println("Error Type: " + ase.getErrorType());
System.out.println("Request ID: " + ase.getRequestId());
} catch (AmazonClientException ace) {
System.out.println("Error Message: " + ace.getMessage());
} finally {
if (inputStream != null) {
inputStream.close();
}
}
You'll need to read the input stream twice using this exact method so if you are uploading a very large file you might need to look at reading it once into an array and then reading it from there.
This error is shown when your XCode is old and the related device you are using is updated to latest version. First of all, install the latest Xcode version.
We can solve this issue by following the below steps:-
If everything worked properly, your XCode has a new developer disk image. Close the finder now, and quit your XCode. Open your Xcode and the error will be gone. Now you can connect your latest device to old Xcode versions.
Thanks
You need the xml.etree.ElementTree.fromstring(text)
from xml.etree.ElementTree import XML, fromstring
myxml = fromstring(text)
In case you are getting 530 password incorrect
1 more step needed
in file /etc/shells
Add the following line
/bin/false
This is how I would do it:
if(text.matches("^[0-9]*$") && text.length() > 2){
//...
}
The $
will avoid a partial match e.g; 1B
.
For bootstrap 4 use offset-4, see below.
<div class="mx-auto">
<form class="mx-auto" action="/campgrounds" method="POST">
<div class="form-group row">
<div class="col-sm-4 offset-4">
<input class="form-control" type="text" name="name" placeholder="name">
</div>
</div>
<div class="form-group row">
<div class="col-sm-4 offset-4">
<input class="form-control" type="text" name="picture" placeholder="image url">
</div>
</div>
<div class="form-group row">
<div class="col-sm-4 offset-4">
<input class="form-control" type="text" name="description" placeholder="description">
</div>
</div>
<button class="btn btn-primary" type="submit">Submit!</button>
<a class="btn btn-secondary" href="/campgrounds">Go Back</a>
</form>
</div>
I only found one way that worked...
$quote = $pdomodel->executeQuery("SELECT * FROM MyTable");
//if (!is_array($quote)) { didn't work
//if (!isset($quote)) { didn't work
if (count($quote) == 0) { //yep the count worked.
echo 'Record does not exist.';
die;
}
The location is in the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps
Source: http://msdn.microsoft.com/en-us/library/windows/desktop/bb787181%28v=vs.85%29.aspx
No, abstract class can never be instantiated.
Use npm outdated
to see Current and Latest version of all packages.
Then npm i packageName@versionNumber
to install specific version : example npm i [email protected]
.
Or npm i packageName@latest
to install latest version : example npm i browser-sync@latest
.
Query query = session.createQuery("from Employee");
Note: from Employee. here Employee is not your table name it's POJO name.
Why not simply
var item = $('.field-item');
for (var i = 0; i <= item.length; i++) {
if ($(item[i]).text() == 'someText') {
$(item[i]).addClass('thisClass');
//do some other stuff here
}
}
There is another solution for this.
Consider the quotes as part of the fields delimiter, by editing the fmt file.
You can check this out for more information:
An extract of the link above:
The only way to remove the quotation marks would be to modify the column delimiters specified during the import operation. The only drawback here is that if you inspect the data to be inserted, you will very quickly realize that the column delimiters are different for each column (Delimiters highlighted above).
So to specify different column delimiters for each column, you would need to use a format file if you plan to use Bulk Insert or BCP. If you generate a format file for the above table structure, it would be as follows:
9.0
3
1 SQLCHAR 0 5 "\t" 1 FName SQL_Latin1_General_CP1_CI_AS
2 SQLCHAR 0 5 "\t" 2 LName SQL_Latin1_General_CP1_CI_AS
3 SQLCHAR 0 50 "\r\n" 3 Company SQL_Latin1_General_CP1_CI_AS
Modify the format file to represent the correct column delimiters for each column. The new format file to be used will look like this:
9.0
4
1 SQLCHAR 0 0 "\"" 0 FIRST_QUOTE SQL_Latin1_General_CP1_CI_AS
2 SQLCHAR 0 5 "\",\"" 1 FNAME SQL_Latin1_General_CP1_CI_AS
3 SQLCHAR 0 5 "\",\"" 2 LNAME SQL_Latin1_General_CP1_CI_AS
4 SQLCHAR 0 50 "\"\r\n" 3 COMPANY SQL_Latin1_General_CP1_CI_AS
I had a similar problem and for my AspNetCore 3.1 application the other answers to this question were not working. I found that configuring a named HttpClient in my Startup.cs
and using header propagation of the Cookie header worked perfectly. It also avoids all the concerns about proper disposition of your handler and client. Note if propagation of the request cookies is not what you need (sorry Op) you can set your own cookies when configuring the client factory.
IServiceCollection
services.AddHttpClient("MyNamedClient").AddHeaderPropagation();
services.AddHeaderPropagation(options =>
{
options.Headers.Add("Cookie");
});
IApplicationBuilder
builder.UseHeaderPropagation();
IHttpClientFactory
into your controller or middleware.using var client = clientFactory.CreateClient("MyNamedClient");
One general way to construct set in iterative way like this:
aset = {e for e in alist}
To show date with time and time-zone
date +"%d-%m-%Y %T.%N %Z"
Output : 22-04-2020 18:01:35.970289239 IST
To expand on Ryan's answer:
Whenever setStateValues is called, React re-renders your component, which means that the function body of the StateSelector
component function gets re-executed.
React docs:
setState() will always lead to a re-render unless shouldComponentUpdate() returns false.
Essentially, you're setting state with:
setStateValues(allowedState);
causing a re-render, which then causes the function to execute, and so on. Hence, the loop issue.
To illustrate the point, if you set a timeout as like:
setTimeout(
() => setStateValues(allowedState),
1000
)
Which ends the 'too many re-renders' issue.
In your case, you're dealing with a side-effect, which is handled with UseEffect
in your component functions. You can read more about it here.
If you are able to send the payload in JSON, this is a most convenient way to read the playload:
Example data class:
public class Person {
String firstName;
String lastName;
// Getters and setters ...
}
Example payload (request body):
{ "firstName" : "John", "lastName" : "Doe" }
Code to read payload in servlet (requires com.google.gson.*):
Person person = new Gson().fromJson(request.getReader(), Person.class);
That's all. Nice, easy and clean. Don't forget to set the content-type header to application/json.
Schema says what tables are in database, what columns they have and how they are related. Each database has its own schema.
You can get more info about the error with the method $mail->ErrorInfo
. For example:
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Message has been sent';
}
This is an alternative to the exception model that you need to active with new PHPMailer(true)
. But if can use exception model, use it as @Phil Rykoff answer.
This comes from the main page of PHPMailer on github https://github.com/PHPMailer/PHPMailer.
if you want to open all your .cpp
files with one command, and have the window split in as many tiles as opened files, you can use:
vim -o $(find name ".cpp")
if you want to include a template in the place you are, you can use:
:r ~/myHeaderTemplate
will import the file "myHeaderTemplate in the place the cursor was before starting the command.
you can conversely select visually some code and save it to a file
when you select visualy, after type ":" in order to enter a command, you'll see "'<,'>" appear after the ":"
'<,'>w ~/myfile $
^ if you add "~/myfile" to the command, the selected part of the file will be saved to myfile.
if you're editing a file an want to copy it :
:saveas newFileWithNewName
Another solution I ran across tonight, which worked for my needs, was to add box-sizing
attributes:
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
These attributes force the border to be part of the box model's width and height and correct the issue as well.
According to caniuse.com » box-sizing, box-sizing
is supported in IE8+.
If you're using LESS or Sass there is a Bootstrap mixin for this.
LESS:
.box-sizing(border-box);
Sass:
@include box-sizing(border-box);
My solution, also quite simple..
$array = [...];
$last = count($array) - 1;
foreach($array as $index => $value)
{
if($index == $last)
// this is last array
else
// this is not last array
}
From man curl
:
-x, --proxy <[protocol://][user:password@]proxyhost[:port]>
Use the specified HTTP proxy.
If the port number is not specified, it is assumed at port 1080.
General way:
export http_proxy=http://your.proxy.server:port/
Then you can connect through proxy from (many) application.
And, as per comment below, for https:
export https_proxy=https://your.proxy.server:port/
I have writen a single file AJAX tester. Enjoy it!!! Just because I have had problems with my hosting provider
<?php /*
Author: Luis Siquot
Purpose: Check ajax performance and errors
License: GPL
site5: Please don't drop json requests (nor delay)!!!!
*/
$r = (int)$_GET['r'];
$w = (int)$_GET['w'];
if($r) {
sleep($w);
echo json_encode($_GET);
die ();
} //else
?><head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
var _settimer;
var _timer;
var _waiting;
$(function(){
clearTable();
$('#boton').bind('click', donow);
})
function donow(){
var w;
var estim = 0;
_waiting = $('#total')[0].value * 1;
clearTable();
for(var r=1;r<=_waiting;r++){
w = Math.floor(Math.random()*6)+2;
estim += w;
dodebug({r:r, w:w});
$.ajax({url: '<?php echo $_SERVER['SCRIPT_NAME']; ?>',
data: {r:r, w:w},
dataType: 'json', // 'html',
type: 'GET',
success: function(CBdata, status) {
CBdebug(CBdata);
}
});
}
doStat(estim);
timer(estim+10);
}
function doStat(what){
$('#stat').replaceWith(
'<table border="0" id="stat"><tr><td>Request Time Sum=<th>'+what+
'<td> /2=<th>'+Math.ceil(what/2)+
'<td> /3=<th>'+Math.ceil(what/3)+
'<td> /4=<th>'+Math.ceil(what/4)+
'<td> /6=<th>'+Math.ceil(what/6)+
'<td> /8=<th>'+Math.ceil(what/8)+
'<td> (seconds)</table>'
);
}
function timer(what){
if(what) {_timer = 0; _settimer = what;}
if(_waiting==0) {
$('#showTimer')[0].innerHTML = 'completed in <b>' + _timer + ' seconds</b> (aprox)';
return ;
}
if(_timer<_settimer){
$('#showTimer')[0].innerHTML = _timer;
setTimeout("timer()",1000);
_timer++;
return;
}
$('#showTimer')[0].innerHTML = '<b>don\'t wait any more!!!</b>';
}
function CBdebug(what){
_waiting--;
$('#req'+what.r)[0].innerHTML = 'x';
}
function dodebug(what){
var tt = '<tr><td>' + what.r + '<td>' + what.w + '<td id=req' + what.r + '> '
$('#debug').append(tt);
}
function clearTable(){
$('#debug').replaceWith('<table border="1" id="debug"><tr><td>Request #<td>Wait Time<td>Done</table>');
}
</script>
</head>
<body>
<center>
<input type="button" value="start" id="boton">
<input type="text" value="80" id="total" size="2"> concurrent json requests
<table id="stat"><tr><td> </table>
Elapsed Time: <span id="showTimer"></span>
<table id="debug"></table>
</center>
</body>
Edit:
r means row and w waiting time.
When you initially press start button 80 (or any other number) of concurrent ajax request are launched by javascript, but as is known they are spooled by the browser. Also they are requested to the server in parallel (limited to certain number, this is the fact of this question). Here the requests are solved server side with a random delay (established by w). At start time all the time needed to solve all ajax calls is calculated. When test is finished, you can see if it took half, took third, took a quarter, etc of the total time, deducting which was the parallelism on the calls to the server. This is not strict, nor precise, but is nice to see in real time how ajaxs calls are completed (seeing the incoming cross). And is a very simple self contained script to show ajax basics.
Of course, this assumes, that server side is not introducing any extra limit.
Preferably use in conjunction with firebug net panel (or your browser's equivalent)
Other answers here use IsAssignableFrom
. You can also use FindInterfaces
from the System
namespace, as described here.
Here's an example that checks all assemblies in the currently executing assembly's folder, looking for classes that implement a certain interface (avoiding LINQ for clarity).
static void Main() {
const string qualifiedInterfaceName = "Interfaces.IMyInterface";
var interfaceFilter = new TypeFilter(InterfaceFilter);
var path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var di = new DirectoryInfo(path);
foreach (var file in di.GetFiles("*.dll")) {
try {
var nextAssembly = Assembly.ReflectionOnlyLoadFrom(file.FullName);
foreach (var type in nextAssembly.GetTypes()) {
var myInterfaces = type.FindInterfaces(interfaceFilter, qualifiedInterfaceName);
if (myInterfaces.Length > 0) {
// This class implements the interface
}
}
} catch (BadImageFormatException) {
// Not a .net assembly - ignore
}
}
}
public static bool InterfaceFilter(Type typeObj, Object criteriaObj) {
return typeObj.ToString() == criteriaObj.ToString();
}
You can set up a list of interfaces if you want to match more than one.
The default values for minOccurs
and maxOccurs
are 1. Thus:
<xsd:element minOccurs="1" name="asdf"/>
cardinality is [1-1] Note: if you specify only minOccurs attribute, it can't be greater than 1, because the default value for maxOccurs is 1.
<xsd:element minOccurs="5" maxOccurs="2" name="asdf"/>
invalid
<xsd:element maxOccurs="2" name="asdf"/>
cardinality is [1-2] Note: if you specify only maxOccurs attribute, it can't be smaller than 1, because the default value for minOccurs is 1.
<xsd:element minOccurs="0" maxOccurs="0"/>
is a valid combination which makes the element prohibited.
For more info see http://www.w3.org/TR/xmlschema-0/#OccurrenceConstraints
I have been experiencing this issue when debugging using NetBeans, even executing the actual jar file. Antivirus would block sending email. You should temporarily disable your antivirus during debugging or exclude NetBeans and the actual jar file from being scanned. In my case, I'm using Avast.
See this link on how to Exclude : How to Add File/Website Exception into avast! Antivirus 2014
It works for me.
The following resolved the issue:
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("JavaScript");
String str = "4*5";
System.out.println(engine.eval(str));
Yet another non-bash-4 (i.e., bash 3, Mac-compatible) way:
val_of_key() {
case $1 in
'A1') echo 'aaa';;
'B2') echo 'bbb';;
'C3') echo 'ccc';;
*) echo 'zzz';;
esac
}
for x in 'A1' 'B2' 'C3' 'D4'; do
y=$(val_of_key "$x")
echo "$x => $y"
done
Prints:
A1 => aaa
B2 => bbb
C3 => ccc
D4 => zzz
The function with the case
acts like an associative array. Unfortunately it cannot use return
, so it has to echo
its output, but this is not a problem, unless you are a purist that shuns forking subshells.
function img($n,$str){
$first=$n."tag/";
$n+=1;
$last=$n."tag/";
$frm = stripos($str,$first);
$to = stripos($str,$last);
echo $frm."<br>";
echo $to."<br>";
$to=($to=="")?(strlen($str)-$frm):($to-$frm);
$final = substr($str,$frm,$to);
echo $to."<br>";
echo $final."<br>";
}
$str = "1tag/Ilove.php2tag/youlike.java3tag/youlike.php";
img(1,$str);
img(2,$str);
img(3,$str);
this issue is because of low storage space availability of a particular drive(c:\ or d:\ etc.,), release some memory then it will work.
Thanks Saikumar.P
These methods worked for me, it maybe useful for anyone: MapOptions interface
set min zoom: mMap.setMinZoomPreference(N);
set max zoom: mMap.setMaxZoomPreference(N);
where N can equal to:
20 : 1128.497220
19 : 2256.994440
18 : 4513.988880
17 : 9027.977761
16 : 18055.955520
15 : 36111.911040
14 : 72223.822090
13 : 144447.644200
12 : 288895.288400
11 : 577790.576700
10 : 1155581.153000
9 : 2311162.307000
8 : 4622324.614000
7 : 9244649.227000
6 : 18489298.450000
5 : 36978596.910000
4 : 73957193.820000
3 : 147914387.600000
2 : 295828775.300000
1 : 591657550.500000
I don't care if the page reloads or displays the results immediately;
Good!
Note: If you don't want to refresh the page see "Ok... but how do I Use Ajax anyway?" below.
I just want to have a button on my website make a PHP file run.
That can be done with a form with a single button:
<form action="">
<input type="submit" value="my button"/>
</form>
That's it.
Pretty much. Also note that there are cases where ajax is really the way to go.
That depends on what you want. In general terms you only need ajax when you want to avoid realoading the page. Still you have said that you don't care about that.
If I can write the code inside HTML just fine, why can't I just reference the file for it in there or make a simple call for it in Javascript?
Because the PHP code is not in the HTML just fine
. That's an illusion created by the way most server side scripting languages works (including PHP, JSP, and ASP). That code only exists on the server, and it is no reachable form the client (the browser) without a remote call of some sort.
You can see evidence of this if you ask your browser to show the source code of the page. There you will not see the PHP code, that is because the PHP code is not send to the client, therefore it cannot be executed from the client. That's why you need to do a remote call to be able to have the client trigger the execution of PHP code.
If you don't use a form (as shown above) you can do that remote call from JavaScript with a little thing called Ajax. You may also want to consider if what you want to do in PHP can be done directly in JavaScript.
Use a form to do the call. You can have it to direct the user to a particlar file:
<form action="myphpfile.php">
<input type="submit" value="click on me!">
</form>
The user will end up in the page myphpfile.php
. To make it work for the current page, set action to an empty string (which is what I did in the example I gave you early).
I just want to link it to a PHP file that will create the permanent blog post on the server so that when I reload the page, the post is still there.
You want to make an operation on the server, you should make your form have the fields you need (even if type="hidden"
and use POST
):
<form action="" method="POST">
<input type="text" value="default value, you can edit it" name="myfield">
<input type="submit" value = "post">
</form>
What do I need to know about it to call a PHP file that will create a text file on a button press?
see: How to write into a file in PHP.
I'm glad you ask... Since you are a newb begginer, I'll give you a little template you can follow:
<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST')
{
//Ok we got a POST, probably from a FORM, read from $_POST.
var_dump($_PSOT); //Use this to see what info we got!
}
else
{
//You could assume you got a GET
var_dump($_GET); //Use this to see what info we got!
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta char-set="utf-8">
<title>Page title</title>
</head>
<body>
<form action="" method="POST">
<input type="text" value="default value, you can edit it" name="myfield">
<input type="submit" value = "post">
</form>
</body>
</html>
Note: you can remove var_dump
, it is just for debugging purposes.
I know the next stage, you will be asking how to:
There is a single answer for that: Sessions.
I'll give a more extensive template for Post-Redirect-Get
<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST')
{
var_dump($_PSOT);
//Do stuff...
//Write results to session
session_start();
$_SESSION['stuff'] = $something;
//You can store stuff such as the user ID, so you can remeember him.
//redirect:
header('Location: ', true, 303);
//The redirection will cause the browser to request with GET
//The results of the operation are in the session variable
//It has empty location because we are redirecting to the same page
//Otherwise use `header('Location: anotherpage.php', true, 303);`
exit();
}
else
{
//You could assume you got a GET
var_dump($_GET); //Use this to see what info we got!
//Get stuff from session
session_start();
if (array_key_exists('stuff', $_SESSION))
{
$something = $_SESSION['stuff'];
//we got stuff
//later use present the results of the operation to the user.
}
//clear stuff from session:
unset($_SESSION['stuff']);
//set headers
header('Content-Type: text/html; charset=utf-8');
//This header is telling the browser what are we sending.
//And it says we are sending HTML in UTF-8 encoding
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta char-set="utf-8">
<title>Page title</title>
</head>
<body>
<?php if (isset($something)){ echo '<span>'.$something.'</span>'}?>;
<form action="" method="POST">
<input type="text" value="default value, you can edit it" name="myfield">
<input type="submit" value = "post">
</form>
</body>
</html>
Please look at php.net for any function call you don't recognize. Also - if you don't have already - get a good tutorial on HTML5.
Also, use UTF-8 because UTF-8!
Notes:
I'm making a simple blog site for myself and I've got the code for the site and the javascript that can take the post I write in a textarea and display it immediately.
If are you using a CMS (Codepress, Joomla, Drupal... etc)? That make put some contraints on how you got to do things.
Also, if you are using a framework, you should look at their documentation or ask at their forum/mailing list/discussion page/contact or try to ask the authors.
Well... Ajax is made easy by some JavaScript libraries. Since you are a begginer, I'll recomend jQuery.
So, let's send something to the server via Ajax with jQuery, I'll use $.post instead of $.ajax for this example.
<?php
if ($_SERVER['REQUEST_METHOD'] === 'POST')
{
var_dump($_PSOT);
header('Location: ', true, 303);
exit();
}
else
{
var_dump($_GET);
header('Content-Type: text/html; charset=utf-8');
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta char-set="utf-8">
<title>Page title</title>
<script>
function ajaxmagic()
{
$.post( //call the server
"test.php", //At this url
{
field: "value",
name: "John"
} //And send this data to it
).done( //And when it's done
function(data)
{
$('#fromAjax').html(data); //Update here with the response
}
);
}
</script>
</head>
<body>
<input type="button" value = "use ajax", onclick="ajaxmagic()">
<span id="fromAjax"></span>
</body>
</html>
The above code will send a POST request to the page test.php
.
Note: You can mix sessions
with ajax
and stuff if you want.
... for these or any other, please make another questions. That's too much for this one.
You can do this with an an InputFilter. Apparently ther is just this Input Filter Interface you can use. Before you do it the annoying way an create a new Class that extends Input filter, u can use this shortcut with a innerclass Interface instantiation.
Therefore you just do this:
EditText subTargetTime = (EditText) findViewById(R.id.my_time);
subTargetTime.setFilters( new InputFilter[] {
new InputFilter() {
@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
int t = Integer.parseInt(source.toString());
if(t <8) { t = 8; }
return t+"";
}
}
});
In this example I check if the value of the EditText is greater than 8. If not it shall be set to 8. So apaprently you need to com up with the min max or whatever filter logic by yourself. But at least u can write the filter logic pretty neat and short directly into the EditText.
Hope this helps
In .NET a POCO is a 'Plain old CLR Object'. It is not a 'Plain old C# object'...
i.ToString().PadLeft(4, '0')
- okay, but doesn't work for negative numbers
i.ToString("0000");
- explicit form
i.ToString("D4");
- short form format specifier
$"{i:0000}";
- string interpolation (C# 6.0+)
If the input video has multiple audio tracks and you need to add one more then use the following command:
ffmpeg -i input_video_with_audio.avi -i new_audio.ac3 -map 0 -map 1 -codec copy output_video.avi
-map 0
means to copy (include) all streams from the first input file (input_video_with_audio.avi
) and -map 1
means to include all streams (in this case one) from the second input file (new_audio.ac3
).
In Oracle 12c you can use the function STANDARD_HASH. It does not require any additional privileges.
select standard_hash('foo', 'MD5') from dual;
The dbms_obfuscation_toolkit is deprecated (see Note here). You can use DBMS_CRYPTO directly:
select rawtohex(
DBMS_CRYPTO.Hash (
UTL_I18N.STRING_TO_RAW ('foo', 'AL32UTF8'),
2)
) from dual;
Output:
ACBD18DB4CC2F85CEDEF654FCCC4A4D8
Add a lower function call if needed. More on DBMS_CRYPTO.
From the offical docs: (http://api.jquery.com/hover/)
The .hover() method binds handlers for both mouseenter and mouseleave events. You can use it to simply apply behavior to an element during the time the mouse is within the element.
This code works to catch the user closing the console window:
using System;
using System.Runtime.InteropServices;
class Program {
static void Main(string[] args) {
handler = new ConsoleEventDelegate(ConsoleEventCallback);
SetConsoleCtrlHandler(handler, true);
Console.ReadLine();
}
static bool ConsoleEventCallback(int eventType) {
if (eventType == 2) {
Console.WriteLine("Console window closing, death imminent");
}
return false;
}
static ConsoleEventDelegate handler; // Keeps it from getting garbage collected
// Pinvoke
private delegate bool ConsoleEventDelegate(int eventType);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool SetConsoleCtrlHandler(ConsoleEventDelegate callback, bool add);
}
Beware of the restrictions. You have to respond quickly to this notification, you've got 5 seconds to complete the task. Take longer and Windows will kill your code unceremoniously. And your method is called asynchronously on a worker thread, the state of the program is entirely unpredictable so locking is likely to be required. Do make absolutely sure that an abort cannot cause trouble. For example, when saving state into a file, do make sure you save to a temporary file first and use File.Replace().
Last Updated Version is with xCode 6.1
class StampInfoTableViewCell: UITableViewCell{
@IBOutlet weak var stampDate: UILabel!
@IBOutlet weak var numberText: UILabel!
override init?(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
}
required init(coder aDecoder: NSCoder) {
//fatalError("init(coder:) has not been implemented")
super.init(coder: aDecoder)
}
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
}
If you have tried all the other answers, and it still hasn't work, you can try skipping a line:
Scanner scan = new Scanner(System.in);
scan.nextLine();
String s = scan.nextLine();
System.out.println("String is " + s);
To expand on another answer, here is a fairly complete example which can cleanup the tmpdir even on exceptions:
import contextlib
import os
import shutil
import tempfile
@contextlib.contextmanager
def cd(newdir, cleanup=lambda: True):
prevdir = os.getcwd()
os.chdir(os.path.expanduser(newdir))
try:
yield
finally:
os.chdir(prevdir)
cleanup()
@contextlib.contextmanager
def tempdir():
dirpath = tempfile.mkdtemp()
def cleanup():
shutil.rmtree(dirpath)
with cd(dirpath, cleanup):
yield dirpath
def main():
with tempdir() as dirpath:
pass # do something here
i made a column by name : update-at in phpMyAdmin and got the current time from Date() method in my code (nodejs) . with every change in table this column hold the time of changes.
As mentioned, it causes control to jump to interrupt vector 0x80. In practice what this means (at least under Linux) is that a system call is invoked; the exact system call and arguments are defined by the contents of the registers. For example, exit() can be invoked by setting %eax to 1 followed by 'int 0x80'.
Q) Finding TOP X records from each group(Oracle)
SQL> select * from emp e
2 where e.empno in (select d.empno from emp d
3 where d.deptno=e.deptno and rownum<3)
4 order by deptno
5 ;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7839 KING PRESIDENT 17-NOV-81 5000 10
7369 SMITH CLERK 7902 17-DEC-80 800 20
7566 JONES MANAGER 7839 02-APR-81 2975 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
6 rows selected.
There is an api in Express.
res.sendFile
app.get('/report/:chart_id/:user_id', function (req, res) {
// res.sendFile(filepath);
});
Serialize and unserialize are pretty common for that. You could also use JSON via json_encode and json_decode for a less PHP-specific format.
Using seeds.rb
file or FactoryBot
is great, but these are respectively great for fixed data structures and testing.
The seedbank
gem might give you more control and modularity to your seeds. It inserts rake tasks and you can also define dependencies between your seeds. Your rake task list will have these additions (e.g.):
rake db:seed # Load the seed data from db/seeds.rb, db/seeds/*.seeds.rb and db/seeds/ENVIRONMENT/*.seeds.rb. ENVIRONMENT is the current environment in Rails.env.
rake db:seed:bar # Load the seed data from db/seeds/bar.seeds.rb
rake db:seed:common # Load the seed data from db/seeds.rb and db/seeds/*.seeds.rb.
rake db:seed:development # Load the seed data from db/seeds.rb, db/seeds/*.seeds.rb and db/seeds/development/*.seeds.rb.
rake db:seed:development:users # Load the seed data from db/seeds/development/users.seeds.rb
rake db:seed:foo # Load the seed data from db/seeds/foo.seeds.rb
rake db:seed:original # Load the seed data from db/seeds.rb
If you are facing this issue in a .ts file which is only there to provide you some constant values, then you can just
rename your .ts file to .js file
and the error will not come again.
StartsWith
a) left(@edition, 15) = 'Express Edition'
b) charindex('Express Edition', @edition) = 1
Contains
charindex('Express Edition', @edition) >= 1
Examples
left
function
set @isExpress = case when left(@edition, 15) = 'Express Edition' then 1 else 0 end
iif
function (starting with SQL Server 2012)
set @isExpress = iif(left(@edition, 15) = 'Express Edition', 1, 0);
charindex
function
set @isExpress = iif(charindex('Express Edition', @edition) = 1, 1, 0);
$('tableName').find('tr').length
Same Object Not Found problem here - both in Xampp as well as in Wamp. It turns out the root name of "phpmyadmin" was "PhpMyAdmin". I got rid of all the capitals, renaming the folder to "phpmyadmin", and after a couple of reloads phpmyadmin was working.
When Environment variables are changed log off and log in again so that it will be applied.
As per https://msdn.microsoft.com/en-us/library/ms180065.aspx, "DBCC USEROPTIONS reports an isolation level of 'read committed snapshot' when the database option READ_COMMITTED_SNAPSHOT is set to ON and the transaction isolation level is set to 'read committed'. The actual isolation level is read committed."
Also in SQL Server Management Studio, in database properties under Options->Miscellaneous there is "Is Read Committed Snapshot On" option status
Thread thread = new Thread(() -> {
new BufferedReader(
new InputStreamReader(inputStream,
StandardCharsets.UTF_8))
.lines().forEach(...);
});
thread.start();
Your custom code goes instead of the ...
Instead of a button, put a link and navigate it to another page
<a href="logout.php">Logout</a>
Then in logout.php
page, use
session_start();
session_destroy();
header('Location: login.php');
exit;