If your service works fine with only models and the GET/POST/PUT/DELETE pattern, use pure REST.
I agree that HTTP is originally designed for stateless applications.
But for modern, more complex (!) real-time (web) applications where you will want to use Websockets (which often imply statefulness), why not use both? JSON-RPC over Websockets is very light so you have the following benefits:
As you are only designing the server side API, start with defining REST models and later add JSON-RPC support as needed, keeping the number of RPC calls to a minimum.
(and sorry for parentheses overuse)
Variable declaration. Initially, it was short for "dimension", which is not a term that is used in programming (outside of this specific keyword) to any significant degree.
http://in.answers.yahoo.com/question/index?qid=20090310095555AANmiAZ
Check if the manifest is a valid xml file. I had the same problem by doing a DOS copy command at the end of the build, and it turns out that for some reason I can not understand "copy" was adding a strange character (->) at the end of the manifest files. The problem was solved by adding "/b" switch to force binary copy.
insert into TABLE_NAME
(COL1,COL2)
WITH
data AS
(
select 'some value' x from dual
union all
select 'another value' x from dual
)
SELECT my_seq.NEXTVAL, x
FROM data
;
I think that is what you want, but i don't have access to oracle to test it right now.
This thread is a bit older but here something I just came across:
Try this code:
$date = new DateTime();
$arr = ['date' => $date];
echo $date->format('Ymd') . '<br>';
mytest($arr);
echo $date->format('Ymd') . '<br>';
function mytest($params = []) {
if (isset($params['date'])) {
$params['date']->add(new DateInterval('P1D'));
}
}
http://codepad.viper-7.com/gwPYMw
Note there is no amp for the $params parameter and still it changes the value of $arr['date']. This doesn't really match with all the other explanations here and what I thought until now.
If I clone the $params['date'] object, the 2nd outputted date stays the same. If I just set it to a string it doesn't effect the output either.
FWIW, sp_test will not be returning anything but an integer (all SQL Server stored procs just return an integer) and no result sets on the wire (since no SELECT statements). To get the output of the PRINT statements, you normally use the InfoMessage event on the connection (not the command) in ADO.NET.
We Can use this method for changing the column index but should be applied to all the columns if there are more than two number of columns otherwise it will show all the Improper values from data table....................
By default the database in a project in the Firebase Console is only readable/writeable by administrative users (e.g. in Cloud Functions, or processes that use an Admin SDK). Users of the regular client-side SDKs can't access the database, unless you change the server-side security rules.
You can change the rules so that the database is only readable/writeable by authenticated users:
{
"rules": {
".read": "auth != null",
".write": "auth != null"
}
}
See the quickstart for the Firebase Database security rules.
But since you're not signing the user in from your code, the database denies you access to the data. To solve that you will either need to allow unauthenticated access to your database, or sign in the user before accessing the database.
The simplest workaround for the moment (until the tutorial gets updated) is to go into the Database panel in the console for you project, select the Rules tab and replace the contents with these rules:
{
"rules": {
".read": true,
".write": true
}
}
This makes your new database readable and writeable by anyone who knows the database's URL. Be sure to secure your database again before you go into production, otherwise somebody is likely to start abusing it.
For a (slightly) more time-consuming, but more secure, solution, call one of the signIn...
methods of Firebase Authentication to ensure the user is signed in before accessing the database. The simplest way to do this is using anonymous authentication:
firebase.auth().signInAnonymously().catch(function(error) {
// Handle Errors here.
var errorCode = error.code;
var errorMessage = error.message;
// ...
});
And then attach your listeners when the sign-in is detected
firebase.auth().onAuthStateChanged(function(user) {
if (user) {
// User is signed in.
var isAnonymous = user.isAnonymous;
var uid = user.uid;
var userRef = app.dataInfo.child(app.users);
var useridRef = userRef.child(app.userid);
useridRef.set({
locations: "",
theme: "",
colorScheme: "",
food: ""
});
} else {
// User is signed out.
// ...
}
// ...
});
I dislike adding properties to standard datatypes in JavaScript, so I would recommend something like this:
/**
* Format a duration in seconds to a human readable format using the notion
* "h+:mm:ss", e.g. "4:40:78". Negative durations are preceeded by "-".
*
* @param t Duration in seconds
* @return The formatted duration string
*/
var readableDuration = (function() {
// Each unit is an object with a suffix s and divisor d
var units = [
{s: '', d: 1}, // Seconds
{s: ':', d: 60}, // Minutes
{s: ':', d: 60}, // Hours
];
// Closure function
return function(t) {
t = parseInt(t); // In order to use modulus
var trunc, n = Math.abs(t), i, out = []; // out: list of strings to concat
for (i = 0; i < units.length; i++) {
n = Math.floor(n / units[i].d); // Total number of this unit
// Truncate e.g. 26h to 2h using modulus with next unit divisor
if (i+1 < units.length) // Tweak substr with two digits
trunc = ('00'+ n % units[i+1].d).substr(-2, 2); // …if not final unit
else
trunc = n;
out.unshift(''+ trunc + units[i].s); // Output
}
(t < 0) ? out.unshift('-') : null; // Handle negative durations
return out.join('');
};
})();
Usage:
var str = readableDuration(3808); // "1:03:28"
I also created a more generally usable version. The main difference is that it accepts milliseconds (which is kind of the standard time unit in JS) and the output format uses spaces instead.
You can overwrite the colors in your css, for example for Danger button:
.btn-danger { border-color: #[insert color here]; background-color: #[insert color here];
.btn-danger:hover { border-color: #[insert color here]; background-color: #[insert color here]; }
Probably all your answers are better, but - just to be complete on the choice of options - I wanted to remind about old, similar method used for years:
SrvAny (installed by InstSrv)
as described here: https://docs.microsoft.com/en-us/troubleshoot/windows-client/deployment/create-user-defined-service
Here's a simple and working method I found elsewhere:
string hexString = "7FF";
int hexNumber;
sscanf(hexString.c_str(), "%x", &hexNumber);
Please note that you might prefer using unsigned long integer/long integer, to receive the value. Another note, the c_str() function just converts the std::string to const char* .
So if you have a const char* ready, just go ahead with using that variable name directly, as shown below [I am also showing the usage of the unsigned long variable for a larger hex number. Do not confuse it with the case of having const char* instead of string]:
const char *hexString = "7FFEA5"; //Just to show the conversion of a bigger hex number
unsigned long hexNumber; //In case your hex number is going to be sufficiently big.
sscanf(hexString, "%x", &hexNumber);
This works just perfectly fine (provided you use appropriate data types per your need).
You need to store it in a String
variable first before displaying it like so:
String Txt = TxtBoxContent.getText();
System.out.println(Txt);
Use ast.literal_eval to evaluate Python literals. However, what you have is JSON (note "true" for example), so use a JSON deserializer.
>>> import json
>>> s = """{"id":"123456789","name":"John Doe","first_name":"John","last_name":"Doe","link":"http:\/\/www.facebook.com\/jdoe","gender":"male","email":"jdoe\u0040gmail.com","timezone":-7,"locale":"en_US","verified":true,"updated_time":"2011-01-12T02:43:35+0000"}"""
>>> json.loads(s)
{u'first_name': u'John', u'last_name': u'Doe', u'verified': True, u'name': u'John Doe', u'locale': u'en_US', u'gender': u'male', u'email': u'[email protected]', u'link': u'http://www.facebook.com/jdoe', u'timezone': -7, u'updated_time': u'2011-01-12T02:43:35+0000', u'id': u'123456789'}
Had a similar issue while installing "Lua" in OS X using homebrew. I guess it could be useful for other users facing similar issue in homebrew.
On running the command:
$ brew install lua
The command returned an error:
Error: /usr/local/opt/lua is not a valid keg
(in general the error can be of /usr/local/opt/ is not a valid keg
FIXED it by deleting the file/directory it is referring to, i.e., deleting the "/usr/local/opt/lua" file.
root-user # rm -rf /usr/local/opt/lua
And then running the brew install command returned success.
If you're using the ReSharper plugin, you can do that using the Shift + Alt + L shortcut or navigate via menu as shown.
Quick and dirty:
#!/usr/bin/perl -w
use strict;
open(FILE, "</tmp/yourfile.txt") || die "File not found";
my @lines = <FILE>;
close(FILE);
foreach(@lines) {
$_ =~ s/<PREF>/ABCD/g;
}
open(FILE, ">/tmp/yourfile.txt") || die "File not found";
print FILE @lines;
close(FILE);
Perhaps it i a good idea not to write the result back to your original file; instead write it to a copy and check the result first.
Pandas DataFrame object should be thought of as a Series of Series. In other words, you should think of it in terms of columns. The reason why this is important is because when you use pd.DataFrame.iterrows
you are iterating through rows as Series. But these are not the Series that the data frame is storing and so they are new Series that are created for you while you iterate. That implies that when you attempt to assign tho them, those edits won't end up reflected in the original data frame.
Ok, now that that is out of the way: What do we do?
Suggestions prior to this post include:
pd.DataFrame.set_value
is deprecated as of Pandas version 0.21pd.DataFrame.ix
is deprecatedpd.DataFrame.loc
is fine but can work on array indexers and you can do betterMy recommendation
Use pd.DataFrame.at
for i in df.index:
if <something>:
df.at[i, 'ifor'] = x
else:
df.at[i, 'ifor'] = y
You can even change this to:
for i in df.index:
df.at[i, 'ifor'] = x if <something> else y
and what if I need to use the value of the previous row for the if condition?
for i in range(1, len(df) + 1):
j = df.columns.get_loc('ifor')
if <something>:
df.iat[i - 1, j] = x
else:
df.iat[i - 1, j] = y
You can also use one line to do that:
{{ yourVariable is not defined ? "Not Assigned" : "Assigned" }}
After struggling with all available options, I ended up writing a JWT token based SessionStore provider (the session travels inside a cookie, and no backend storage is needed).
http://www.drupalonwindows.com/en/content/token-sessionstate
Advantages:
Run the below query against the database
select distinct local_net_address, local_tcp_port from sys.dm_exec_connections where local_net_address is not null
The above query shows the local IP as well as the listening Port number
I am using node version manager. I was getting this error message because I had switched to a different version of node. When I switched back to the version of node where I installed bower, this error went away. In my case, the command was nvm use stable
Another way to do this is:
// inflate the layout
View myLayout = LayoutInflater.from(this).inflate(R.layout.MY_LAYOUT,null);
// load the text view
TextView myView = (TextView) myLayout.findViewById(R.id.MY_VIEW);
Try using a div
instead of the span
or using the CSS display: block;
or display: inline-block;
—span
is by default an inline element which cannot take width
and height
properties.
Do note that using the VisualTreeHelper does only work on controls that derive from Visual or Visual3D. If you also need to inspect other elements (e.g. TextBlock, FlowDocument etc.), using VisualTreeHelper will throw an exception.
Here's an alternative that falls back to the logical tree if necessary:
http://www.hardcodet.net/2009/06/finding-elements-in-wpf-tree-both-ways
Not sure this will fix the problem for everyone , But uninstalling java, java SDK and installing the latest version (Version 8) fixed the issue for me ..
@RequestMapping(value = "/testonly", method = { RequestMethod.GET, RequestMethod.POST })
public ModelAndView listBooksPOST(@ModelAttribute("booksFilter") BooksFilter filter,
@RequestParam(required = false) String parameter1,
@RequestParam(required = false) String parameter2,
BindingResult result, HttpServletRequest request)
throws ParseException {
LONG CODE and SAME LONG CODE with a minor difference
}
if @RequestParam(required = true)
then you must pass parameter1,parameter2
Use BindingResult and request them based on your conditions.
The Other way
@RequestMapping(value = "/books", method = RequestMethod.GET)
public ModelAndView listBooks(@ModelAttribute("booksFilter") BooksFilter filter,
two @RequestParam parameters, HttpServletRequest request) throws ParseException {
myMethod();
}
@RequestMapping(value = "/books", method = RequestMethod.POST)
public ModelAndView listBooksPOST(@ModelAttribute("booksFilter") BooksFilter filter,
BindingResult result) throws ParseException {
myMethod();
do here your minor difference
}
private returntype myMethod(){
LONG CODE
}
The simple answer:
doing a MOV RBX, 3 and MUL RBX is expensive; just ADD RBX, RBX twice
ADD 1 is probably faster than INC here
MOV 2 and DIV is very expensive; just shift right
64-bit code is usually noticeably slower than 32-bit code and the alignment issues are more complicated; with small programs like this you have to pack them so you are doing parallel computation to have any chance of being faster than 32-bit code
If you generate the assembly listing for your C++ program, you can see how it differs from your assembly.
You can use this or refer further this https://select2.org/programmatic-control/add-select-clear-items
$('#mySelect2').val(null).trigger('change');
You JSON doesn't match your struct fields: E.g. "district" in JSON and "District" as the field.
Also: Your Item is a slice type but your JSON is a dict value. Do not mix this up. Slices decode from arrays.
You can try this one:
public static String getRoundedValue(Double value, String format) {
DecimalFormat df;
if(format == null)
df = new DecimalFormat("#.00");
else
df = new DecimalFormat(format);
return df.format(value);
}
or
public static double roundDoubleValue(double value, int places) {
if (places < 0) throw new IllegalArgumentException();
long factor = (long) Math.pow(10, places);
value = value * factor;
long tmp = Math.round(value);
return (double) tmp / factor;
}
Go to a Packages/User
, create (or edit) a .sublime-settings
file named after the Syntax where you want to add the extensions, Ini.sublime-settings
in your case, then write there something like this:
{
"extensions":["cfg"]
}
And then restart Sublime Text
Unless I'm misunderstanding, you lost your .ssh
directory containing your private key on your local machine and so you want to remove the public key which was on a server and which allowed key-based login.
In that case, it will be stored in the .ssh/authorized_keys
file in your home directory on the server. You can just edit this file with a text editor and delete the relevant line if you can identify it (even easier if it's the only entry!).
I hope that key wasn't your only method of access to the server and you have some other way of logging in and editing the file. You can either manually add a new public key to authorised_keys
file or use ssh-copy-id
. Either way, you'll need password authentication set up for your account on the server, or some other identity or access method to get to the authorized_keys
file on the server.
ssh-add
adds identities to your SSH agent which handles management of your identities locally and "the connection to the agent is forwarded over SSH remote logins, and the user can thus use the privileges given by the identities anywhere in the network in a secure way." (man page), so I don't think it's what you want in this case. It doesn't have any way to get your public key onto a server without you having access to said server via an SSH login as far as I know.
Neither, because both are quite verbose for a very simple task. You can just do:
let result = ({
1: 'One',
2: 'Two',
3: 'Three'
})[opt] ?? 'Default' // opt can be 1, 2, 3 or anything (default)
This, of course, also works with strings, a mix of both or without a default case:
let result = ({
'first': 'One',
'second': 'Two',
3: 'Three'
})[opt] // opt can be 'first', 'second' or 3
It works by creating an object where the options/cases are the keys and the results are the values. By putting the option into the brackets you access the value of the key that matches the expression via the bracket notation.
This returns undefined
if the expression inside the brackets is not a valid key. We can detect this undefined-case by using the nullish coalescing operator ??
and return a default value.
console.log('Using a valid case:', ({
1: 'One',
2: 'Two',
3: 'Three'
})[1] ?? 'Default')
console.log('Using an invalid case/defaulting:', ({
1: 'One',
2: 'Two',
3: 'Three'
})[7] ?? 'Default')
_x000D_
.as-console-wrapper {max-height: 100% !important;top: 0;}
_x000D_
This comment syntax should work for you:
@* enter comments here *@
git pull -s recursive -X theirs <remoterepo or other repo>
Or, simply, for the default repository:
git pull -X theirs
If you're already in conflicted state...
git checkout --theirs path/to/file
Already solved, but just for the record, another approach would be to create two views...
CREATE TABLE lms_attendance
(id int, user int, time int, io varchar(3));
CREATE VIEW latest_all AS
SELECT la.user, max(la.time) time
FROM lms_attendance la
GROUP BY la.user;
CREATE VIEW latest_io AS
SELECT la.*
FROM lms_attendance la
JOIN latest_all lall
ON lall.user = la.user
AND lall.time = la.time;
INSERT INTO lms_attendance
VALUES
(1, 9, 1370931202, 'out'),
(2, 9, 1370931664, 'out'),
(3, 6, 1370932128, 'out'),
(4, 12, 1370932128, 'out'),
(5, 12, 1370933037, 'in');
SELECT * FROM latest_io;
You can't rely on order of dictionaries, but you may try this:
mydict['Apple'].items()[0][0]
If you want the order to be preserved you may want to use this: http://www.python.org/dev/peps/pep-0372/#ordered-dict-api
below html5 versions
iframe {
overflow:hidden;
}
In html5
<iframe seamless="seamless" ....>
iframe[seamless]{
overflow: hidden;
}
but not supported correctly yet
You won't see a simple answer because there isn't one.
First, Unicode doesn't contain "every character from every language", although it sure does try.
Unicode itself is a mapping, it defines codepoints and a codepoint is a number, associated with usually a character. I say usually because there are concepts like combining characters. You may be familiar with things like accents, or umlauts. Those can be used with another character, such as an a
or a u
to create a new logical character. A character therefore can consist of 1 or more codepoints.
To be useful in computing systems we need to choose a representation for this information. Those are the various unicode encodings, such as utf-8, utf-16le, utf-32 etc. They are distinguished largely by the size of of their codeunits. UTF-32 is the simplest encoding, it has a codeunit that is 32bits, which means an individual codepoint fits comfortably into a codeunit. The other encodings will have situations where a codepoint will need multiple codeunits, or that particular codepoint can't be represented in the encoding at all (this is a problem for instance with UCS-2).
Because of the flexibility of combining characters, even within a given encoding the number of bytes per character can vary depending on the character and the normalization form. This is a protocol for dealing with characters which have more than one representation (you can say "an 'a' with an accent"
which is 2 codepoints, one of which is a combining char or "accented 'a'"
which is one codepoint).
I had to use os.system, since subprocess was giving me a memory error for larger tasks. Reference for this problem here. So, in order to get the output of the os.system command I used this workaround:
import os
batcmd = 'dir'
result_code = os.system(batcmd + ' > output.txt')
if os.path.exists('output.txt'):
fp = open('output.txt', "r")
output = fp.read()
fp.close()
os.remove('output.txt')
print(output)
It's a lose of time to implement from scratch this functionality. I implemented the library recommended by SalutonMondo and I am very satisfied. It is very simple to use and very quick. I improved the original library and I added a new click listener for item click. Also I added font awesome library (http://fortawesome.github.io/Font-Awesome/) and now you can simply add a new item title and specify the icon name from font awesome.
Here is the github link
<summary>
and <details>
Using <summary>
and <details>
elements is the simplest but see browser support as current IE is not supporting it. You can polyfill though (most are jQuery-based). Do note that unsupported browser will simply show the expanded version of course, so that may be acceptable in some cases.
/* Optional styling */_x000D_
summary::-webkit-details-marker {_x000D_
color: blue;_x000D_
}_x000D_
summary:focus {_x000D_
outline-style: none;_x000D_
}
_x000D_
<details>_x000D_
<summary>Summary, caption, or legend for the content</summary>_x000D_
Content goes here._x000D_
</details>
_x000D_
See also how to style the <details>
element (HTML5 Doctor) (little bit tricky).
The :target
selector has a pretty good browser support, and it can be used to make a single collapsible element within the frame.
.details,_x000D_
.show,_x000D_
.hide:target {_x000D_
display: none;_x000D_
}_x000D_
.hide:target + .show,_x000D_
.hide:target ~ .details {_x000D_
display: block;_x000D_
}
_x000D_
<div>_x000D_
<a id="hide1" href="#hide1" class="hide">+ Summary goes here</a>_x000D_
<a id="show1" href="#show1" class="show">- Summary goes here</a>_x000D_
<div class="details">_x000D_
Content goes here._x000D_
</div>_x000D_
</div>_x000D_
<div>_x000D_
<a id="hide2" href="#hide2" class="hide">+ Summary goes here</a>_x000D_
<a id="show2" href="#show2" class="show">- Summary goes here</a>_x000D_
<div class="details">_x000D_
Content goes here._x000D_
</div>_x000D_
</div>
_x000D_
I would like to add a little more explanation to @user837048's answer. on my OSX Yosemite and Galaxy S3 which is rooted and using firmware CyanogenMod 11
and KitKat
I have done the below proceedings to Enable
and Disable
root prompt.
Please make ensure below
On your system
Android SDK
and you have set paths to binary files. type which adb
on your shell. It must give you somewhat result.
$ which adb
/Applications/Android Studio.app/sdk/platform-tools/adb
On your Mobile
ON
Apps and ADB
If you don't see Developer Options
in your settings, Goto Settings > About Phone. Scroll down to Build number
and tap there 7 times. I know its crazy. But believe me it works :D
Connect your phone via USB Cable.
type on your computer's
terminal
$ adb shell
you will see a prompt similiar, If any prompt has been shown on your mobile, to trust the connection, tap 'Always Trust' and 'OK'
shell@m0:/ $
now type
shell@m0:/ $ id
uid=2000(shell) gid=2000(shell) groups=1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats) context=u:r:shell:s0
See you are not root
Now exit from shell, which will fall back to computer's prompt
shell@m0:/ $ exit
Now activate root
$adb shell
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
root@m0:/ #
Wow.. you are root
root@m0:/ # id
uid=0(root) gid=0(root) context=u:r:shell:s0
I tried many solutions to go back to normal non root prompt
. But didn't worked except @user837048's solution.
root@m0:/ # stop adbd && setprop service.adb.root 0 && start adbd &
[1] 32137
root@m0:/ #
$
This might exit you from Adb prompt
to normal prompt. Now connect again.
$ adb shell
shell@m0:/ $
Well.. You are Non root
You can write this
class Human {
private firstName : string;
private lastName : string;
constructor (
public FirstName?:string,
public LastName?:string) {
}
get FirstName() : string {
console.log("Get FirstName : ", this.firstName);
return this.firstName;
}
set FirstName(value : string) {
console.log("Set FirstName : ", value);
this.firstName = value;
}
get LastName() : string {
console.log("Get LastName : ", this.lastName);
return this.lastName;
}
set LastName(value : string) {
console.log("Set LastName : ", value);
this.lastName = value;
}
}
$("#selectsearch").change(function() {
var action = $(this).val() == "people" ? "user" : "content";
$("#search-form").attr("action", "/search/" + action);
});
This should do the trick for you.
For one word:
if (!string.Contains("One"))
For two words:
if (!(string.Contains("One") && string.Contains("Two")))
sync
method first lists both source and destination paths and copies only differences (name, size etc.).
cp --recursive
method lists source path and copies (overwrites) all to the destination path.
If you have possible matches in the destination path, I would suggest sync
as one LIST request on the destination path will save you many unnecessary PUT requests - meaning cheaper and possibly faster.
I had the same issue in a solution with projects targting .NET Core 3.1, .NET Standard 2.0 and .NET Framework 4.8. The issue was on this last one.
The trick that solved the issue for me, was to change the target framework to .NET Framework 4.5, then back to .NET Framework 4.8.
I have absolutely no idea why this fixed the issue, but it did.
The IDE was Visual Studio 2019.
I know that what I do is quite the workaround, however it works perfectly and that is the way I do it everytime.
Then, proceed like this:
Cheers!
The table normally contains multiple rows. Use a loop and use row.Field<string>(0)
to access the value of each row.
foreach(DataRow row in dt.Rows)
{
string file = row.Field<string>("File");
}
You can also access it via index:
foreach(DataRow row in dt.Rows)
{
string file = row.Field<string>(0);
}
If you expect only one row, you can also use the indexer of DataRowCollection
:
string file = dt.Rows[0].Field<string>(0);
Since this fails if the table is empty, use dt.Rows.Count
to check if there is a row:
if(dt.Rows.Count > 0)
file = dt.Rows[0].Field<string>(0);
Execute (Java Script) tag from innerHTML
Replace your script element with div having a class attribute class="javascript" and close it with </div>
Don't change the content that you want to execute (previously it was in script tag and now it is in div tag)
Add a style in your page...
<style type="text/css"> .javascript { display: none; } </style>
Now run eval using jquery(Jquery js should be already included)
$('.javascript').each(function() {
eval($(this).text());
});`
You can explore more here, at my blog.
Sometimes all of the previous answers simply don't work. If you want to have access to a system variable (like M2_HOME
) in Eclipse or in IntelliJ IDEA the only thing that works for me in this case is:
First (step 1) edit /etc/launchd.conf
to contain a line like this: "setenv VAR value" and then (step 2) reboot.
Simply modifying .bash_profile won't work because in OS X the applications are not started as in other Unix'es; they don't inherit the parent's shell variables. All the other modifications won't work for a reason that is unknown to me. Maybe someone else can clarify about this.
First check if your wlan card support hosted network and if no update the card driver. Follow this steps
1) open cmd with administrative rights
2) on the black screen type: netsh wlan show driver | findstr Hosted
3) See Hosted network supported, if No then update drivers
You could use sed -n 5p file
.
You can also get a range, e.g., sed -n 5,10p file
.
import numpy as np
# ND array list with different size
a = [[1],[2,3,4,5],[6,7,8]]
# stack them
b = np.hstack(a)
print(b)
[1 2 3 4 5 6 7 8]
Remember that window
is the global namespace. These two lines attempt to declare the same variable:
window.APP = { ... }
const APP = window.APP
The second definition is not allowed in strict
mode (enabled with 'use strict'
at the top of your file).
To fix the problem, simply remove the const APP =
declaration. The variable will still be accessible, as it belongs to the global namespace.
Use this typesafe pattern with poison pills:
public sealed interface BaseMessage {
final class ValidMessage<T> implements BaseMessage {
@Nonnull
private final T value;
public ValidMessage(@Nonnull T value) {
this.value = value;
}
@Nonnull
public T getValue() {
return value;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ValidMessage<?> that = (ValidMessage<?>) o;
return value.equals(that.value);
}
@Override
public int hashCode() {
return Objects.hash(value);
}
@Override
public String toString() {
return "ValidMessage{value=%s}".formatted(value);
}
}
final class PoisonedMessage implements BaseMessage {
public static final PoisonedMessage INSTANCE = new PoisonedMessage();
private PoisonedMessage() {
}
@Override
public String toString() {
return "PoisonedMessage{}";
}
}
}
public class Producer implements Callable<Void> {
@Nonnull
private final BlockingQueue<BaseMessage> messages;
Producer(@Nonnull BlockingQueue<BaseMessage> messages) {
this.messages = messages;
}
@Override
public Void call() throws Exception {
messages.put(new BaseMessage.ValidMessage<>(1));
messages.put(new BaseMessage.ValidMessage<>(2));
messages.put(new BaseMessage.ValidMessage<>(3));
messages.put(BaseMessage.PoisonedMessage.INSTANCE);
return null;
}
}
public class Consumer implements Callable<Void> {
@Nonnull
private final BlockingQueue<BaseMessage> messages;
private final int maxPoisons;
public Consumer(@Nonnull BlockingQueue<BaseMessage> messages, int maxPoisons) {
this.messages = messages;
this.maxPoisons = maxPoisons;
}
@Override
public Void call() throws Exception {
int poisonsReceived = 0;
while (poisonsReceived < maxPoisons && !Thread.currentThread().isInterrupted()) {
BaseMessage message = messages.take();
if (message instanceof BaseMessage.ValidMessage<?> vm) {
Integer value = (Integer) vm.getValue();
System.out.println(value);
} else if (message instanceof BaseMessage.PoisonedMessage) {
++poisonsReceived;
} else {
throw new IllegalArgumentException("Invalid BaseMessage type: " + message);
}
}
return null;
}
}
If there are documented best practices, I have not found them yet. However, here are a few guidelines I use when determining where to put parameters in an url:
Optional parameters tend to be easier to put in the query string.
If you want to return a 404 error when the parameter value does not correspond to an existing resource then I would tend towards a path segment parameter. e.g. /customer/232
where 232 is not a valid customer id.
If however you want to return an empty list then when the parameter is not found then I suggest using query string parameters. e.g. /contacts?name=dave
If a parameter affects an entire subtree of your URI space then use a path segment. e.g. a language parameter /en/document/foo.txt
versus /document/foo.txt?language=en
I prefer unique identifiers to be in a path segment rather than a query parameter.
The official rules for URIs are found in this RFC spec here. There is also another very useful RFC spec here that defines rules for parameterizing URIs.
Rather than silencing the warnings, gcc style is usually to use either standard C constructs or the __attribute__
extension to tell the compiler more about your intention. For instance, the warning about assignment used as a condition is suppressed by putting the assignment in parentheses, i.e. if ((p=malloc(cnt)))
instead of if (p=malloc(cnt))
. Warnings about unused function arguments can be suppressed by some odd __attribute__
I can never remember, or by self-assignment, etc. But generally I prefer just globally disabling any warning option that generates warnings for things that will occur in correct code.
I prefer ^[-+]?([1-9]\d*|0)$
because ^[-+]?[0-9]+$
allows the string starting with 0
.
RE_INT = re.compile(r'^[-+]?([1-9]\d*|0)$')
class TestRE(unittest.TestCase):
def test_int(self):
self.assertFalse(RE_INT.match('+'))
self.assertFalse(RE_INT.match('-'))
self.assertTrue(RE_INT.match('1'))
self.assertTrue(RE_INT.match('+1'))
self.assertTrue(RE_INT.match('-1'))
self.assertTrue(RE_INT.match('0'))
self.assertTrue(RE_INT.match('+0'))
self.assertTrue(RE_INT.match('-0'))
self.assertTrue(RE_INT.match('11'))
self.assertFalse(RE_INT.match('00'))
self.assertFalse(RE_INT.match('01'))
self.assertTrue(RE_INT.match('+11'))
self.assertFalse(RE_INT.match('+00'))
self.assertFalse(RE_INT.match('+01'))
self.assertTrue(RE_INT.match('-11'))
self.assertFalse(RE_INT.match('-00'))
self.assertFalse(RE_INT.match('-01'))
self.assertTrue(RE_INT.match('1234567890'))
self.assertTrue(RE_INT.match('+1234567890'))
self.assertTrue(RE_INT.match('-1234567890'))
Laravel has a built-in method to shuffle the order of the results.
Here is a quote from the documentation:
shuffle()
The shuffle method randomly shuffles the items in the collection:
$collection = collect([1, 2, 3, 4, 5]);
$shuffled = $collection->shuffle();
$shuffled->all();
// [3, 2, 5, 1, 4] - (generated randomly)
You can see the documentation here.
You're on the right track. Here's a corrected version:
char str[10];
int n;
printf("type a string: ");
scanf("%s %d", str, &n);
printf("%s\n", str);
printf("%d\n", n);
Let's talk through the changes:
n
) to store your number inscanf
to read in first a string and then a number (%d
means number, as you already knew from your printf
That's pretty much all there is to it. Your code is a little bit dangerous, still, because any user input that's longer than 9 characters will overflow str
and start trampling your stack.
If the project is Maven, you can try this way :
Then the import issue should be solved .
$("#closeLink").click(closeIt);
Let's say you want to call your function passing some args to it i.e., closeIt(1, false)
. Then, you should build an anonymous function and call closeIt
from it.
$("#closeLink").click(function() {
closeIt(1, false);
});
Ideally, I would use a construct like this instead:
for (std::vector<your_type>::const_iterator i = things.begin(); i != things.end(); ++i)
{
// if you ever need the distance, you may call std::distance
// it won't cause any overhead because the compiler will likely optimize the call
size_t distance = std::distance(things.begin(), i);
}
This a has the neat advantage that your code suddenly becomes container agnostic.
And regarding your problem, if some library you use requires you to use int
where an unsigned int
would better fit, their API is messy. Anyway, if you are sure that those int
are always positive, you may just do:
int int_distance = static_cast<int>(distance);
Which will specify clearly your intent to the compiler: it won't bug you with warnings anymore.
In a svn enabled project the small question mark (?) indicates that your file is not yet added to the SVN repository.
The small orange rectangle is an indication that your file is committed in the repository.
An asterisk (*) indicates a local change.
I fixed this. When you add the migration, in the Up() method there will be a line like this:
.ForeignKey("dbo.Members", t => t.MemberId, cascadeDelete:True)
If you just delete the cascadeDelete from the end it will work.
The accurate way is to use the __FUNCTION__
predefined magic constant.
Example:
class Test {
function MethodA(){
echo __FUNCTION__;
}
}
Result: MethodA
.
ASCX files are server-side Web application framework designed for Web development to produce dynamic Web pages.They like DLL codes but you can use there's TAGS You can write them once and use them in any places in your ASP pages.If you have a file named "Controll.ascx" then its code will named "Controll.ascx.cs". You can embed it in a ASP page to use it:
The duplicate values in any column can be deleted with a simple for loop.
Sub remove()
Dim a As Long
For a = Cells(Rows.Count, 1).End(xlUp).Row To 1 Step -1
If WorksheetFunction.CountIf(Range("A1:A" & a), Cells(a, 1)) > 1 Then Rows(a).Delete
Next
End Sub
I made a bit more of a generic filter that I've used in multiple projects already:
HTML:
<input ng-model="customerNameFilter" />
<div ng-repeat="(key, value) in filter(customers, 'customerName', customerNameFilter" >
<p>Number: {{value.customerNo}}</p>
<p>Name: {{value.customerName}}</p>
</div>
JS:
$scope.filter = function(object, field, filter) {
if (!object) return {};
if (!filter) return object;
var filteredObject = {};
Object.keys(object).forEach(function(key) {
if (object[key][field] === filter) {
filteredObject[key] = object[key];
}
});
return filteredObject;
};
The thing about collations is that although the database has its own collation, every table, and every column can have its own collation. If not specified it takes the default of its parent object, but can be different.
When you change collation of the database, it will be the new default for all new tables and columns, but it doesn't change the collation of existing objects inside the database. You have to go and change manually the collation of every table and column.
Luckily there are scripts available on the internet that can do the job. I am not going to recommend any as I haven't tried them but here are few links:
http://www.codeproject.com/Articles/302405/The-Easy-way-of-changing-Collation-of-all-Database
Update Collation of all fields in database on the fly
http://www.sqlservercentral.com/Forums/Topic820675-146-1.aspx
If you need to have different collation on two objects or can't change collations - you can still JOIN
between them using COLLATE
command, and choosing the collation you want for join.
SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE Latin1_General_CI_AS
or using default database collation:
SELECT * FROM A JOIN B ON A.Text = B.Text COLLATE DATABASE_DEFAULT
If you want to print "all" lines, there is a simple working solution:
grep "test" -A 9999999 -B 9999999
I faced the same problem for psql (PostgreSQL) 9.6.11
.
what worked for me -
remove postmaster.pid -- rm /usr/local/var/[email protected]/postmaster.pid
restart postgres -- brew services restart [email protected]
If postmaster.pid
doesn't exist or the above process doesn't work then run --
sudo chmod 700 /usr/local/var/[email protected]
Enums are just classes in disguise, so for the most part, anything you can do with a class you can do with an enum.
I cannot think of a reason that an enum should not be able to implement an interface, at the same time I cannot think of a good reason for them to either.
I would say once you start adding thing like interfaces, or method to an enum you should really consider making it a class instead. Of course I am sure there are valid cases for doing non-traditional enum things, and since the limit would be an artificial one, I am in favour of letting people do what they want there.
This is the idiom I usually use:
while test $# -gt 0; do
case "$1" in
-h|--help)
echo "$package - attempt to capture frames"
echo " "
echo "$package [options] application [arguments]"
echo " "
echo "options:"
echo "-h, --help show brief help"
echo "-a, --action=ACTION specify an action to use"
echo "-o, --output-dir=DIR specify a directory to store output in"
exit 0
;;
-a)
shift
if test $# -gt 0; then
export PROCESS=$1
else
echo "no process specified"
exit 1
fi
shift
;;
--action*)
export PROCESS=`echo $1 | sed -e 's/^[^=]*=//g'`
shift
;;
-o)
shift
if test $# -gt 0; then
export OUTPUT=$1
else
echo "no output dir specified"
exit 1
fi
shift
;;
--output-dir*)
export OUTPUT=`echo $1 | sed -e 's/^[^=]*=//g'`
shift
;;
*)
break
;;
esac
done
Key points are:
$#
is the number of argumentsYou don't need a batch file, just do this from powershell :
powershell -C "gci | % {rni $_.Name ($_.Name -replace 'Vacation2010', 'December')}"
Since nothing else I have found helps to solve this in a truly normalized way, here is another answer.
Note that some answers to similar questions try to use the Uri
type, but that struggles with trailing slashes vs. no trailing slashes too.
My other answer on this page works for operations that put the file system to work, but if we want to have the resolved path right now (such as for comparison reasons), without going through the file system, C:/Temp/..
and C:/
would be considered different. Without going through the file system, navigating in that manner does not provide us with a normalized, properly comparable path.
What can we do?
Path.GetDirectoryName(path + "/") ?? ""
will reliably give us a directory path without a trailing slash.
string
, not as char
) will treat a null
path the same as it treats ""
.GetDirectoryName
will refrain from discarding the last path component thanks to the added slash.GetDirectoryName
will normalize slashes and navigational dots...
by navigating up.GetDirectoryName
will return null
for an empty path, which we coalesce to ""
.First, normalize the input path:
dirPath = Path.GetDirectoryName(dirPath + "/") ?? "";
Then, we can get the parent directory, and we can repeat this operation any number of times to navigate further up:
// This is reliable if path results from this or the previous operation
path = Path.GetDirectoryName(path);
Note that we have never touched the file system. No part of the path needs to exist, as it would if we had used DirectoryInfo
.
Another take on this that hasn't been mentioned here is that, when in debug, the project may build, but it won't run, giving the error message displayed in the question.
If this is the case, another option to look at is the output file versus the target file. These should match.
A quick way to check the output file is to go to the project's property pages, then go to Configuration Properties -> Linker -> General (In VS 2013 - exact path may vary depending on IDE version).
There is an "Output File" setting. If it is not $(OutDir)$(TargetName)$(TargetExt)
, then you may run into issues.
This is also discussed in more detail here.
Try this to Get filename from input [type='file'] using jQuery.
<script type="text/javascript">
$(document).ready(function(){
$('input[type="file"]').change(function(e){
var fileName = e.target.files[0].name;
alert('The file "' + fileName + '" has been selected.');
});
});
</script>
Taken from @ jQueryPot
For me I did enter a invalid url like : orcl
only instead of jdbc:oracle:thin:@//localhost:1521/orcl
Use the default version:
Collections.sort(myarrayList);
Of course this requires that your Elements implement Comparable
, but the same holds true for the version you mentioned.
BTW: you should use generics in your code, that way you get compile-time errors if your class doesn't implement Comparable. And compile-time errors are much better than the runtime errors you'll get otherwise.
List<MyClass> list = new ArrayList<MyClass>();
// now fill up the list
// compile error here unless MyClass implements Comparable
Collections.sort(list);
@Adam Augusta is right, One more thing
Apache-HTTP client jars also comes in same category as some google-apis.
org.apache.httpcomponents.httpclient_4.2.jar and commons-codec-1.4.jar both on classpath, This is very possible that you will get this problem.
This prove to all jars which are using early version of common-codec internally and at the same time someone using common-codec explicitly on classpath too.
Basically you do the counts as sub-queries within a standard select.
An example would be the following, this returns 1 row, two columns
SELECT
(SELECT COUNT(*) FROM MyTable WHERE MyCol = 'MyValue') AS MyTableCount,
(SELECT COUNT(*) FROM YourTable WHERE MyCol = 'MyValue') AS YourTableCount,
My answer is repeating what others have said before, but I thought I'd add an example, using MySQL
, only because the previous answers were a little bit cryptic to me.
The general form of the command you need to use to update a single row's column:
UPDATE my_table SET my_column='new value' WHERE something='some value';
And here's an example.
BEFORE
mysql> select aet,port from ae;
+------------+-------+
| aet | port |
+------------+-------+
| DCM4CHEE01 | 11112 |
| CDRECORD | 10104 |
+------------+-------+
2 rows in set (0.00 sec)
MAKING THE CHANGE
mysql> update ae set port='10105' where aet='CDRECORD';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
AFTER
mysql> select aet,port from ae;
+------------+-------+
| aet | port |
+------------+-------+
| DCM4CHEE01 | 11112 |
| CDRECORD | 10105 |
+------------+-------+
2 rows in set (0.00 sec)
This does what you want without you having to create a new array as it returns a new array.
int[] original = new int[300000];
int[] firstHalf = Arrays.copyOfRange(original, 0, original.length/2);
There is no built-in function in Javascript to perform this search.
If you are using jQuery you could do a jQuery.inArray(element,array)
.
Yeah, this appears to be a common standard. Some coders use self, others use me. It's used as a reference back to the "real" object as opposed to the event.
It's something that took me a little while to really get, it does look odd at first.
I usually do this right at the top of my object (excuse my demo code - it's more conceptual than anything else and isn't a lesson on excellent coding technique):
function MyObject(){
var me = this;
//Events
Click = onClick; //Allows user to override onClick event with their own
//Event Handlers
onClick = function(args){
me.MyProperty = args; //Reference me, referencing this refers to onClick
...
//Do other stuff
}
}
Could it be that your file is not ISO-8859-15 encoded? You should be able to check with the file command:
file YourFile.txt
Also, you can use iconv without providing the encoding of the original file:
iconv -t UTF-8 YourFile.txt
have you tried:
.image_block{
text-align: center;
vertical-align: bottom;
}
The datasource is by default .\SQLEXPRESS (its the instance where databases are placed by default) or if u changed the name of the instance during installation of sql server so i advise you to do this :
connectionString="Data Source=.\\yourInstance(defaulT Data source is SQLEXPRESS);
Initial Catalog=databaseName;
User ID=theuser if u use it;
Password=thepassword if u use it;
integrated security=true(if u don t use user and pass; else change it false)"
Without to knowing your instance, I could help with this one. Hope it helped
With : i << 2
const data = context.getImageData(x, y, width, height).data;
const pixels = [];
for (let i = 0, dx = 0; dx < data.length; i++, dx = i << 2) {
if (data[dx+3] <= 8)
console.log("transparent x= " + i);
}
Basically with UNSIGNED
, you're giving yourself twice as much space for the integer since you explicitly specify you don't need negative numbers (usually because values you store will never be negative).
=>
is used in associative array key value assignment. Take a look at:
http://php.net/manual/en/language.types.array.php.
->
is used to access an object method or property. Example: $obj->method()
.
If you want the number of threads per user in a linux system then you should use:
ps -eLf | grep <USER> | awk '{ num += $6 } END { print num }'
where as <USER>
use the desired user name.
Have a Table class whose rows is a list of dict or better row objects
In table do not directly add rows but have a method which update few lookup maps e.g. for name if you are not adding rows in order or id are not consecutive you can have idMap too e.g.
class Table(object):
def __init__(self):
self.rows = []# list of row objects, we assume if order of id
self.nameMap = {} # for faster direct lookup for row by name
def addRow(self, row):
self.rows.append(row)
self.nameMap[row['name']] = row
def getRow(self, name):
return self.nameMap[name]
table = Table()
table.addRow({'ID':1,'name':'a'})
I have solved this problem by importing the following dependency. you must manually import httpclient
<dependency>
<groupId>commons-httpclient</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>
You need to add a css rule that removes the after content (through a class)..
An update due to some valid comments.
The more correct way to completely remove/disable the :after
rule is to use
p.no-after:after{content:none;}
Original answer
You need to add a css rule that removes the after content (through a class)..
p.no-after:after{content:"";}
and add that class to your p
when you want to with this line
$('p').addClass('no-after'); // replace the p selector with what you need...
a working example at : http://www.jsfiddle.net/G2czw/
I use a function for this :
private void Log (string s) {
TB1.AppendText(Environment.NewLine + s);
TB1.ScrollToCaret();
}
I think something like
$("#leftDiv").mouseover(function(){$(this).css("overflow","scroll");});
$("#leftDiv").mouseout(function(){$(this).css("overflow","hidden");});
I am not sure how to see the actual rows/records that come back.
Stored procedures do not return records. They may have a cursor as an output parameter, which is a pointer to a select statement. But it requires additional action to actually bring back rows from that cursor.
In SQL Developer, you can execute a procedure that returns a ref cursor as follows
var rc refcursor
exec proc_name(:rc)
After that, if you execute the following, it will show the results from the cursor:
print rc
I tried the solution suggested by LukeP and found that it doesn't support the Authorize attribute. So, I modified it a bit.
public class UserExBusinessInfo
{
public int BusinessID { get; set; }
public string Name { get; set; }
}
public class UserExInfo
{
public IEnumerable<UserExBusinessInfo> BusinessInfo { get; set; }
public int? CurrentBusinessID { get; set; }
}
public class PrincipalEx : ClaimsPrincipal
{
private readonly UserExInfo userExInfo;
public UserExInfo UserExInfo => userExInfo;
public PrincipalEx(IPrincipal baseModel, UserExInfo userExInfo)
: base(baseModel)
{
this.userExInfo = userExInfo;
}
}
public class PrincipalExSerializeModel
{
public UserExInfo UserExInfo { get; set; }
}
public static class IPrincipalHelpers
{
public static UserExInfo ExInfo(this IPrincipal @this) => (@this as PrincipalEx)?.UserExInfo;
}
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginModel details, string returnUrl)
{
if (ModelState.IsValid)
{
AppUser user = await UserManager.FindAsync(details.Name, details.Password);
if (user == null)
{
ModelState.AddModelError("", "Invalid name or password.");
}
else
{
ClaimsIdentity ident = await UserManager.CreateIdentityAsync(user, DefaultAuthenticationTypes.ApplicationCookie);
AuthManager.SignOut();
AuthManager.SignIn(new AuthenticationProperties { IsPersistent = false }, ident);
user.LastLoginDate = DateTime.UtcNow;
await UserManager.UpdateAsync(user);
PrincipalExSerializeModel serializeModel = new PrincipalExSerializeModel();
serializeModel.UserExInfo = new UserExInfo()
{
BusinessInfo = await
db.Businesses
.Where(b => user.Id.Equals(b.AspNetUserID))
.Select(b => new UserExBusinessInfo { BusinessID = b.BusinessID, Name = b.Name })
.ToListAsync()
};
JavaScriptSerializer serializer = new JavaScriptSerializer();
string userData = serializer.Serialize(serializeModel);
FormsAuthenticationTicket authTicket = new FormsAuthenticationTicket(
1,
details.Name,
DateTime.Now,
DateTime.Now.AddMinutes(15),
false,
userData);
string encTicket = FormsAuthentication.Encrypt(authTicket);
HttpCookie faCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
Response.Cookies.Add(faCookie);
return RedirectToLocal(returnUrl);
}
}
return View(details);
}
And finally in Global.asax.cs
protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
{
HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
if (authCookie != null)
{
FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
JavaScriptSerializer serializer = new JavaScriptSerializer();
PrincipalExSerializeModel serializeModel = serializer.Deserialize<PrincipalExSerializeModel>(authTicket.UserData);
PrincipalEx newUser = new PrincipalEx(HttpContext.Current.User, serializeModel.UserExInfo);
HttpContext.Current.User = newUser;
}
}
Now I can access the data in views and controllers simply by calling
User.ExInfo()
To log out I just call
AuthManager.SignOut();
where AuthManager is
HttpContext.GetOwinContext().Authentication
The installation of these tools may vary on different OS.
Under Windows, node-sass currently supports VS2015 by default, if you only have VS2013 in your box and meet any error while running the command, you can define the version of VS by adding: --msvs_version=2013. This is noted on the node-sass npm page.
So, the safe command line that works on Windows with VS2013 is: npm install --msvs_version=2013 gulp node-sass gulp-sass
This worked for me perfectly:
1.git stash
to save your local modifications
If you want to discard changes
git clean -df
git checkout -- .
git clean removes all untracked files (warning: while it won't delete ignored files mentioned directly in .gitignore, it may delete ignored files residing in folders) and git checkout clears all unstaged changes.
2.git checkout master
to switch to the main branch (Assuming you want to use master)
3.git pull
to pull last commit from master branch
4.git status
in order to check everything looks great
On branch master
Your branch is up-to-date with 'origin/master'.
it's simple just type : $facebook->setSession(null); for logout
Here a solution for Swift 5.2
PlayerView.swift:
import AVFoundation
import UIKit
class PlayerView: UIView {
var player: AVPlayer? {
get {
return playerLayer.player
}
set {
playerLayer.player = newValue
}
}
var playerLayer: AVPlayerLayer {
return layer as! AVPlayerLayer
}
// Override UIView property
override static var layerClass: AnyClass {
return AVPlayerLayer.self
}
}
VideoPlayer.swift
import AVFoundation
import Foundation
protocol VideoPlayerDelegate {
func downloadedProgress(progress:Double)
func readyToPlay()
func didUpdateProgress(progress:Double)
func didFinishPlayItem()
func didFailPlayToEnd()
}
let videoContext: UnsafeMutableRawPointer? = nil
class VideoPlayer : NSObject {
private var assetPlayer:AVPlayer?
private var playerItem:AVPlayerItem?
private var urlAsset:AVURLAsset?
private var videoOutput:AVPlayerItemVideoOutput?
private var assetDuration:Double = 0
private var playerView:PlayerView?
private var autoRepeatPlay:Bool = true
private var autoPlay:Bool = true
var delegate:VideoPlayerDelegate?
var playerRate:Float = 1 {
didSet {
if let player = assetPlayer {
player.rate = playerRate > 0 ? playerRate : 0.0
}
}
}
var volume:Float = 1.0 {
didSet {
if let player = assetPlayer {
player.volume = volume > 0 ? volume : 0.0
}
}
}
// MARK: - Init
convenience init(urlAsset:NSURL, view:PlayerView, startAutoPlay:Bool = true, repeatAfterEnd:Bool = true) {
self.init()
playerView = view
autoPlay = startAutoPlay
autoRepeatPlay = repeatAfterEnd
if let playView = playerView, let playerLayer = playView.layer as? AVPlayerLayer {
playerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
}
initialSetupWithURL(url: urlAsset)
prepareToPlay()
}
override init() {
super.init()
}
// MARK: - Public
func isPlaying() -> Bool {
if let player = assetPlayer {
return player.rate > 0
} else {
return false
}
}
func seekToPosition(seconds:Float64) {
if let player = assetPlayer {
pause()
if let timeScale = player.currentItem?.asset.duration.timescale {
player.seek(to: CMTimeMakeWithSeconds(seconds, preferredTimescale: timeScale), completionHandler: { (complete) in
self.play()
})
}
}
}
func pause() {
if let player = assetPlayer {
player.pause()
}
}
func play() {
if let player = assetPlayer {
if (player.currentItem?.status == .readyToPlay) {
player.play()
player.rate = playerRate
}
}
}
func cleanUp() {
if let item = playerItem {
item.removeObserver(self, forKeyPath: "status")
item.removeObserver(self, forKeyPath: "loadedTimeRanges")
}
NotificationCenter.default.removeObserver(self)
assetPlayer = nil
playerItem = nil
urlAsset = nil
}
// MARK: - Private
private func prepareToPlay() {
let keys = ["tracks"]
if let asset = urlAsset {
asset.loadValuesAsynchronously(forKeys: keys, completionHandler: {
DispatchQueue.main.async {
self.startLoading()
}
})
}
}
private func startLoading(){
var error:NSError?
guard let asset = urlAsset else {return}
let status:AVKeyValueStatus = asset.statusOfValue(forKey: "tracks", error: &error)
if status == AVKeyValueStatus.loaded {
assetDuration = CMTimeGetSeconds(asset.duration)
let videoOutputOptions = [kCVPixelBufferPixelFormatTypeKey as String : Int(kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange)]
videoOutput = AVPlayerItemVideoOutput(pixelBufferAttributes: videoOutputOptions)
playerItem = AVPlayerItem(asset: asset)
if let item = playerItem {
item.addObserver(self, forKeyPath: "status", options: .initial, context: videoContext)
item.addObserver(self, forKeyPath: "loadedTimeRanges", options: [.new, .old], context: videoContext)
NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidReachEnd), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(didFailedToPlayToEnd), name: NSNotification.Name.AVPlayerItemFailedToPlayToEndTime, object: nil)
if let output = videoOutput {
item.add(output)
item.audioTimePitchAlgorithm = AVAudioTimePitchAlgorithm.varispeed
assetPlayer = AVPlayer(playerItem: item)
if let player = assetPlayer {
player.rate = playerRate
}
addPeriodicalObserver()
if let playView = playerView, let layer = playView.layer as? AVPlayerLayer {
layer.player = assetPlayer
print("player created")
}
}
}
}
}
private func addPeriodicalObserver() {
let timeInterval = CMTimeMake(value: 1, timescale: 1)
if let player = assetPlayer {
player.addPeriodicTimeObserver(forInterval: timeInterval, queue: DispatchQueue.main, using: { (time) in
self.playerDidChangeTime(time: time)
})
}
}
private func playerDidChangeTime(time:CMTime) {
if let player = assetPlayer {
let timeNow = CMTimeGetSeconds(player.currentTime())
let progress = timeNow / assetDuration
delegate?.didUpdateProgress(progress: progress)
}
}
@objc private func playerItemDidReachEnd() {
delegate?.didFinishPlayItem()
if let player = assetPlayer {
player.seek(to: CMTime.zero)
if autoRepeatPlay == true {
play()
}
}
}
@objc private func didFailedToPlayToEnd() {
delegate?.didFailPlayToEnd()
}
private func playerDidChangeStatus(status:AVPlayer.Status) {
if status == .failed {
print("Failed to load video")
} else if status == .readyToPlay, let player = assetPlayer {
volume = player.volume
delegate?.readyToPlay()
if autoPlay == true && player.rate == 0.0 {
play()
}
}
}
private func moviewPlayerLoadedTimeRangeDidUpdated(ranges:Array<NSValue>) {
var maximum:TimeInterval = 0
for value in ranges {
let range:CMTimeRange = value.timeRangeValue
let currentLoadedTimeRange = CMTimeGetSeconds(range.start) + CMTimeGetSeconds(range.duration)
if currentLoadedTimeRange > maximum {
maximum = currentLoadedTimeRange
}
}
let progress:Double = assetDuration == 0 ? 0.0 : Double(maximum) / assetDuration
delegate?.downloadedProgress(progress: progress)
}
deinit {
cleanUp()
}
private func initialSetupWithURL(url:NSURL) {
let options = [AVURLAssetPreferPreciseDurationAndTimingKey : true]
urlAsset = AVURLAsset(url: url as URL, options: options)
}
// MARK: - Observations
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if context == videoContext {
if let key = keyPath {
if key == "status", let player = assetPlayer {
playerDidChangeStatus(status: player.status)
} else if key == "loadedTimeRanges", let item = playerItem {
moviewPlayerLoadedTimeRangeDidUpdated(ranges: item.loadedTimeRanges)
}
}
}
}
}
Usage:
private var playerView: PlayerView = PlayerView()
private var videoPlayer:VideoPlayer?
and inside viewDidLoad()
:
view.addSubview(playerView)
preparePlayer()
// set Constraints (if you do it purely in code)
playerView.translatesAutoresizingMaskIntoConstraints = false
playerView.topAnchor.constraint(equalTo: view.topAnchor, constant: 10.0).isActive = true
playerView.leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: 10.0).isActive = true
playerView.trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -10.0).isActive = true
playerView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 10.0).isActive = true
private func preparePlayer() {
if let filePath = Bundle.main.path(forResource: "my video", ofType: "mp4") {
let fileURL = NSURL(fileURLWithPath: filePath)
videoPlayer = VideoPlayer(urlAsset: fileURL, view: playerView)
if let player = videoPlayer {
player.playerRate = 0.67
}
}
}
Recently had the same problem: TypeError: $(...).slick is not a function
Found an interesting solution. Hope, it might be useful to somebody.
In my particular situation there are: jQuery + WHMCS + slick. It works normal standalone, without WHMCS. But after the integration to WHMCS an error appears.
The solution was to use jQuery in noConflict mode.
Ex: Your code:
$(document).ready(function() {
$('a').click( function(event) {
$(this).hide();
event.preventDefault();
});
});
Code in noConflict mode:
var $jq = jQuery.noConflict();
$jq(document).ready(function() {
$jq('a').click( function(event) {
$jq(this).hide();
event.preventDefault();
});
});
The solution was found here: http://zenverse.net/jquery-how-to-fix-the-is-not-a-function-error-using-noconflict/
I usually leave a checkbox unlabeled and then make its "label" a separate element. It's a pain, but there's so much cross-browser difference between how checkboxes and their labels are displayed (as you've noticed) that this is the only way I can come close to controlling how everything looks.
I also end up doing this in winforms development, for the same reason. I think the fundamental problem with the checkbox control is that it is really two different controls: the box and the label. By using a checkbox, you're leaving it up to the implementers of the control to decide how those two elements are displayed next to each other (and they always get it wrong, where wrong = not what you want).
I really hope someone has a better answer to your question.
I've found a good alternative! It works best for me, without setting the focus on something else.
Try that:
private void richTextBox_KeyDown(object sender, KeyEventArgs e)
{
e.SuppressKeyPress = true;
}
INSERT INTO `table` ( `data` , `date` ) VALUES('".$data."',NOW()+INTERVAL 1 DAY);
The C standard specifies that unsigned numbers will be stored in binary. (With optional padding bits). Signed numbers can be stored in one of three formats: Magnitude and sign; two's complement or one's complement. Interestingly that rules out certain other representations like Excess-n or Base -2.
However on most machines and compilers store signed numbers in 2's complement.
int
is normally 16 or 32 bits. The standard says that int
should be whatever is most efficient for the underlying processor, as long as it is >= short
and <= long
then it is allowed by the standard.
On some machines and OSs history has causes int
not to be the best size for the current iteration of hardware however.
If the UIButton
is in the combined state of selected
and disabled
, its state is UIControlStateSelected | UIControlStateDisabled
.
So its state needs to be adjusted like this:
[button setTitleColor:color UIControlStateSelected | UIControlStateDisabled];
[button setImage:image forState:UIControlStateSelected | UIControlStateDisabled];
One approach is to subclass UIButton
as follows:
@implementation TTButton
- (void)awakeFromNib {
[super awakeFromNib];
//! Fix behavior when `disabled && selected`
//! Load settings in `xib` or `storyboard`, and apply it again.
UIColor *color = [self titleColorForState:UIControlStateDisabled];
[self setTitleColor:color forState:UIControlStateDisabled];
UIImage *img = [self imageForState:UIControlStateDisabled];
[self setImage:img forState:UIControlStateDisabled];
}
- (void)setTitleColor:(UIColor *)color forState:(UIControlState)state {
[super setTitleColor:color forState:state];
//
if (UIControlStateDisabled == state) {
[super setTitleColor:color forState:UIControlStateSelected | state];
[super setTitleColor:color forState:UIControlStateHighlighted | state];
}
}
- (void)setImage:(UIImage *)image forState:(UIControlState)state {
[super setImage:image forState:state];
if (UIControlStateDisabled == state) {
[super setImage:image forState:UIControlStateSelected | state];
[super setImage:image forState:UIControlStateHighlighted | state];
}
}
@end
Exception code c0000005
is the code for an access violation. That means that your program is accessing (either reading or writing) a memory address to which it does not have rights. Most commonly this is caused by:
N
and you access elements with index >=N
.To solve the problem you'll need to do some debugging. If you are not in a position to get the fault to occur under your debugger on your development machine you should get a crash dump file and load it into your debugger. This will allow you to see where in the code the problem occurred and hopefully lead you to the solution. You'll need to have the debugging symbols associated with the executable in order to see meaningful stack traces.
if number%2==0
will tell you that it's even. So odd numbers would be the else statement there. The "%" is the mod sign which returns the remainder after dividing. So essentially we're saying if the number is divisible by two we can safely assume it's even. Otherwise it's odd (it's a perfect correlation!)
As for the asterisk placing you want to prepend the asterisks with the number of spaces correlated to the line it's on. In your example
***** line 0
*** line 1
* line 2
We'll want to space accordingly
0*****
01***
012*
You need a delimiter for your pattern. It should be added at the start and end of the pattern like so:
$pattern = "/My name is '(.*)' and im fine/"; // With / as a delimeter
I just had this problem myself under Debian Wheezy. I restarted the adb daemon with sudo:
sudo ./adb kill-server
sudo ./adb start-server
sudo ./adb devices
Everything is working :)
You can use GCHandleType.Weak instead of Pinned. On the other hand, there is another way to get a pointer to an object:
object o = new object();
TypedReference tr = __makeref(o);
IntPtr ptr = **(IntPtr**)(&tr);
Requires unsafe block and is very, very dangerous and should not be used at all. ?
Back in the day when by-ref locals weren't possible in C#, there was one undocumented mechanism that could accomplish a similar thing – __makeref
.
object o = new object();
ref object r = ref o;
//roughly equivalent to
TypedReference tr = __makeref(o);
There is one important difference in that TypedReference is "generic"; it can be used to store a reference to a variable of any type. Accessing such a reference requires to specify its type, e.g. __refvalue(tr, object)
, and if it doesn't match, an exception is thrown.
To implement the type checking, TypedReference must have two fields, one with the actual address to the variable, and one with a pointer to its type representation. It just so happens that the address is the first field.
Therefore, __makeref
is used first to obtain a reference to the variable o
. The cast (IntPtr**)(&tr)
treats the structure as an array (represented via a pointer) of IntPtr*
(pointers to a generic pointer type), accessed via a pointer to it. The pointer is first dereferenced to obtain the first field, then the pointer there is dereferenced again to obtain the value actually stored in the variable o
– the pointer to the object itself.
However, since 2012, I have come up with a better and safer solution:
public static class ReferenceHelpers
{
public static readonly Action<object, Action<IntPtr>> GetPinnedPtr;
static ReferenceHelpers()
{
var dyn = new DynamicMethod("GetPinnedPtr", typeof(void), new[] { typeof(object), typeof(Action<IntPtr>) }, typeof(ReferenceHelpers).Module);
var il = dyn.GetILGenerator();
il.DeclareLocal(typeof(object), true);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Stloc_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Ldloc_0);
il.Emit(OpCodes.Conv_I);
il.Emit(OpCodes.Call, typeof(Action<IntPtr>).GetMethod("Invoke"));
il.Emit(OpCodes.Ret);
GetPinnedPtr = (Action<object, Action<IntPtr>>)dyn.CreateDelegate(typeof(Action<object, Action<IntPtr>>));
}
}
This creates a dynamic method that first pins the object (so its storage doesn't move in the managed heap), then executes a delegate that receives its address. During the execution of the delegate, the object is still pinned and thus safe to be manipulated via the pointer:
object o = new object();
ReferenceHelpers.GetPinnedPtr(o, ptr => Console.WriteLine(Marshal.ReadIntPtr(ptr) == typeof(object).TypeHandle.Value)); //the first pointer in the managed object header in .NET points to its run-time type info
This is the easiest way to pin an object, since GCHandle requires the type to be blittable in order to pin it. It has the advantage of not using implementation details, undocumented keywords and memory hacking.
Without knowing the ID of the DIV I think you could select the IMG like this:
$("#"+$(this).attr("id")+" img:first")
You should reinstall Python:
brew reinstall python
To get brew see the brew homepage.
Very short answer :
Different databases have different uses. I'm not a database expert. Rule of thumb:
Short answer:
Let's consider two example scenarios:
Scenario 1:
You are building an online store/website, and you want to be able to:
You want to be able to find data for a particular user, change its name... basically perform INSERT, UPDATE, DELETE operations on user data. Same with products, etc.
You want to be able to make transactions, possibly involving a user buying a product (that's a relation). Then OLTP is probably a good fit.
Scenario 2:
You have an online store/website, and you want to compute things like
This falls into the analytics/business intelligence domain, and therefore OLAP is probably more suited.
If you think in terms of "It would be nice to know how/what/how much"..., and that involves all "objects" of one or more kind (ex. all the users and most of the products to know the total spent) then OLAP is probably better suited.
Longer answer:
Of course things are not so simple. That's why we have to use short tags like OLTP
and OLAP
in the first place. Each database should be evaluated independently in the end.
So what could be the fundamental difference between OLAP and OLTP?
Well, databases have to store data somewhere. It shouldn't be surprising that the way the data is stored heavily reflects the possible use of said data. Data is usually stored on a hard drive. Let's think of a hard drive as a really wide sheet of paper, where we can read and write things. There are two ways to organize our reads and writes so that they can be efficient and fast.
One way is to make a book that is a bit like a phone book. On each page of the book, we store the information regarding a particular user. Now that's nice, we can find the information for a particular user very easily! Just jump to the page! We can even have a special page at the beginning to tell us on which page the users are if we want. But on the other hand, if we want to find, say, how much money all of our users spent then we would have to read every page, i.e. the whole book! That would be a row-based book/database (OLTP). The optional page at the beginning would be the index.
Another way to use our big sheet of paper is to make an accounting book. I'm no accountant, but let's imagine that we would have a page for "expenditures", "purchases"... That's nice because now we can query things like "give me the total revenue" very quickly (just read the "purchases" page). We can also ask for more involved things like "give me the top ten products sold" and still have acceptable performance. But now consider how painful it would be to find the expenditures for a particular user. You would have to go through the whole list of everyone's expenditures and filter the ones of that particular user, then sum them. Which basically amounts to "read the whole book" again. That would be a column-based database (OLAP).
It follows that:
OLTP
databases are meant to be used to do many small transactions, and usually serve as a "single source of truth".
OLAP
databases on the other hand are more suited for analytics, data mining, fewer queries but they are usually bigger (they operate on more data).
It's a bit more involved than that of course and that's a 20 000 feet overview of how databases differ, but it allows me not to get lost in a sea of acronyms.
Speaking of acronyms:
To read a bit further, here are some relevant links which heavily inspired my answer:
Problems only surface when I am I trying to give the first loaded content an active state
Does this mean that you want to add a class to the first button?
$('.o-links').click(function(e) { // ... }).first().addClass('O_Nav_Current');
instead of using IDs for the slider's items and resetting html contents you can use classes and indexes:
CSS:
.image-area { width: 100%; height: auto; display: none; } .image-area:first-of-type { display: block; }
JavaScript:
var $slides = $('.image-area'), $btns = $('a.o-links'); $btns.on('click', function (e) { var i = $btns.removeClass('O_Nav_Current').index(this); $(this).addClass('O_Nav_Current'); $slides.filter(':visible').fadeOut(1000, function () { $slides.eq(i).fadeIn(1000); }); e.preventDefault(); }).first().addClass('O_Nav_Current');
I found that adding border-radius to tables, trs, and tds does not seem to work 100% in the latest versions of Chrome, FF, and IE. What I do instead is, I wrap the table with a div and put the border-radius on it.
<div class="tableWrapper">
<table>
<tr><td>Content</td></tr>
<table>
</div>
.tableWrapper {
border-radius: 4px;
overflow: hidden;
}
If your table is not width: 100%
, you can make your wrapper float: left
, just remember to clear it.
try this within your if statements:
Application.DisplayAlerts = False
Worksheets(“Sheetname”).Delete
Application.DisplayAlerts = True
As stated by @Dugini, some config entries have been removed. Maximal:
webdriver.DesiredCapabilities.FIREFOX['proxy'] = {
"httpProxy":PROXY,
"ftpProxy":PROXY,
"sslProxy":PROXY,
"noProxy":[],
"proxyType":"MANUAL"
}
It's as simple as is:
WebView webview = (WebView) findViewById(R.id.webview);
webview.loadUrl("file:///android_asset/some.html");
And your some.html needs to contain something like:
<link rel="stylesheet" type="text/css" href="style.css" />
In easy language, both versions are absolutely the same. Only difference is:
min.js is for websites (online)
.js is for developers, guys who needs to read, learn about or/and understand jquery codes, for ie plugin development (offline, local work).
There are several scenarios to consider. First of all, you need to check the type of your object. You can simply call GetType() for this. If the type does not implement IDynamicMetaObjectProvider, then you can use reflection same as for any other object. Something like:
var propertyInfo = test.GetType().GetProperties();
However, for IDynamicMetaObjectProvider implementations, the simple reflection doesn't work. Basically, you need to know more about this object. If it is ExpandoObject (which is one of the IDynamicMetaObjectProvider implementations), you can use the answer provided by itowlson. ExpandoObject stores its properties in a dictionary and you can simply cast your dynamic object to a dictionary.
If it's DynamicObject (another IDynamicMetaObjectProvider implementation), then you need to use whatever methods this DynamicObject exposes. DynamicObject isn't required to actually "store" its list of properties anywhere. For example, it might do something like this (I'm reusing an example from my blog post):
public class SampleObject : DynamicObject
{
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = binder.Name;
return true;
}
}
In this case, whenever you try to access a property (with any given name), the object simply returns the name of the property as a string.
dynamic obj = new SampleObject();
Console.WriteLine(obj.SampleProperty);
//Prints "SampleProperty".
So, you don't have anything to reflect over - this object doesn't have any properties, and at the same time all valid property names will work.
I'd say for IDynamicMetaObjectProvider implementations, you need to filter on known implementations where you can get a list of properties, such as ExpandoObject, and ignore (or throw an exception) for the rest.
I Know this is an old topic...but none of the above helped me. And after searching a lot and trying everything...I came up with this.
First remove the click code out of the $(document).ready part and put it in a separate section. then put your click code in an $(function(){......}); code.
Like this:
<script>
$(function(){
//your click code
$("a.tabclick").on('click',function() {
//do something
});
});
</script>
I faced the same problem. I just copied the testNode.js file(that contain the test code) and pasted into the root of nodejs directory manually. I tried this command C:\Program Files (x86)\nodejs>node testnode.js
Bingo! I received this message.
Then I typed this url in a browser and received the message "Hello World". Hope this help somebody.
Looks to me as MySQL 3.6 gives the following error while MySQL 3.7 no longer errors out. I am yet to find anything in the documentation regarding this fix.
I believe it stems from the Python creed that "explicit is better than implicit".
Note that setting the Access-Control-Allow-Origin
header in the Flask response object is fine in many cases (such as this one), but it has no effect when serving static assets (in a production setup, at least). That's because static assets are served directly by the front-facing web server (usually Nginx or Apache). So, in that case, you have to set the response header at the web server level, not in Flask.
For more details, see this article that I wrote a while back, explaining how to set the headers (in my case, I was trying to do cross-domain serving of Font Awesome assets).
Also, as @Satu said, you may need to allow access only for a specific domain, in the case of JS AJAX requests. For requesting static assets (like font files), I think the rules are less strict, and allowing access for any domain is more accepted.
MySQL solution:
select Name from Employee order by Name ;
Order by will order the names from a to z.
tr td
{
border-bottom: 2px solid silver;
}
or if you want the border inside the TR tag, you can do this:
tr td {
box-shadow: inset 0px -2px 0px silver;
}
To go off of Thapa's answer, you need to cast to the viewcontroller class before using...
if let wd = self.view.window { var vc = wd.rootViewController! if(vc is UINavigationController){ vc = (vc as! UINavigationController).visibleViewController } if(vc is customViewController){ var viewController : customViewController = vc as! customViewController
You can use many different queries to check if a table exists. Below is a comparison between several:
mysql_query('select 1 from `table_name` group by 1'); or
mysql_query('select count(*) from `table_name`');
mysql_query("DESCRIBE `table_name`");
70000 rows: 24ms
1000000 rows: 24ms
5000000 rows: 24ms
mysql_query('select 1 from `table_name`');
70000 rows: 19ms
1000000 rows: 23ms
5000000 rows: 29ms
mysql_query('select 1 from `table_name` group by 1'); or
mysql_query('select count(*) from `table_name`');
70000 rows: 18ms
1000000 rows: 18ms
5000000 rows: 18ms
These benchmarks are only averages:
You must place the label after a caption in order to for label
to store the table's number, not the chapter's number.
\begin{table} \begin{tabular}{| p{5cm} | p{5cm} | p{5cm} |} -- cut -- \end{tabular} \caption{My table} \label{table:kysymys} \end{table} Table \ref{table:kysymys} on page \pageref{table:kysymys} refers to the ...
I found the accepted solution didn't work on my MySQL install, returning an empty set, but this query worked for me in all situations that I tested it on:
SELECT x.val from data x, data y
GROUP BY x.val
HAVING SUM(SIGN(1-SIGN(y.val-x.val)))/COUNT(*) > .5
LIMIT 1
The alert() function can't output an object in a read-friendly manner. Try using console.log(object) instead, and fire up your browser's console to debug.
If you wish to get the country code without asking for any permission, you can choose a tricky way.
The method simply uses an API to get the country code, and there aren't any third-party libraries to depend on. We can create one for us.
Here I have used Google Cloud Functions to write an API and it is so effortless.
Step 1: Create a Google Cloud Account, and set up billing (the free tier is enough)
Step 2: Create a cloud function to get the geo location
Copy this basic function to the code editor of index.js:
const cors = require('cors')
function _geolocation(req, res) {
const data = {
country_code: req.headers["x-appengine-country"],
region: req.headers["x-appengine-region"],
city: req.headers["x-appengine-city"],
cityLatLong: req.headers["x-appengine-citylatlong"],
userIP: req.headers["x-appengine-user-ip"]
}
res.json(data)
};
exports.geolocation = (req, res) => {
const corsHandler = cors({ origin: true })
return corsHandler(req, res, function() {
return _geolocation(req, res);
});
};
Also we need to copy the package.json definition:
{
"name": "gfc-geolocation",
"version": "0.0.1",
"dependencies": {
"cors": "^2.8.4"
}
}
Step 3: finish, and get the URL similar to: "https://us-central1-geolocation-mods-sdde.cloudfunctions.net/geolocation"
Step 4: parse the JSON response and get the country code
The response will look like:
{
"country": "IN",
"region": "kl",
"city": "kochi",
"cityLatLong": "9.9312,76.2673",
"userIP": "xx.xx.xx.xx"
}
Thanks and credits go to the Medium article: Free IP-based Geolocation with Google Cloud Functions
if you are in Linux server exit from the server and re ssh
There are 2 jQuery functions that you'll want to use here.
1) click
. This will take an anonymous function as it's sole parameter, and will execute it when the element is clicked.
2) html
. This will take an html string as it's sole parameter, and will replace the contents of your element with the html provided.
So, in your case, you'll want to do the following:
$('#content-container a').click(function(e){
$(this).parent().html('<a href="#">I\'m a new link</a>');
e.preventDefault();
});
If you only want to add content to your div, rather than replacing everything in it, you should use append
:
$('#content-container a').click(function(e){
$(this).parent().append('<a href="#">I\'m a new link</a>');
e.preventDefault();
});
If you want the new added links to also add new content when clicked, you should use event delegation:
$('#content-container').on('click', 'a', function(e){
$(this).parent().append('<a href="#">I\'m a new link</a>');
e.preventDefault();
});
The answer was surprisingly simple. I had to add a Content-Type
header in the POST
request with a value of application/json
. Without this header Jersey did not know what to do with the request body (in spite of the @Consumes(MediaType.APPLICATION_JSON)
annotation)!
To solve permission issue on plugins and themes on localhost or production quickly, you just run this
sudo chmod 757 wp-content/themes
sudo chmod 757 wp-content/plugins
if take care permission on production, you can run
sudo chown -R www-data:www-data wp-content/themes
sudo chown -R www-data:www-data wp-content/plugins
Yes, it is the right way.
You could use the image in the resource file just using the path:
<Image Source="..\Media\Image.png" />
You must set the build action of the image file to "Resource".
I have used below code in Angular 9. note that it is using http class instead of normal httpClient.
so import Headers from the module, otherwise Headers will be mistaken by typescript headers interface and gives error
import {Http, Headers, RequestOptionsArgs } from "@angular/http";
and in your method use following sample code and it is breaked down for easier understanding.
let customHeaders = new Headers({ Authorization: "Bearer " + localStorage.getItem("token")});
const requestOptions: RequestOptionsArgs = { headers: customHeaders };
return this.http.get("/api/orders", requestOptions);
Cast from string using float()
:
>>> float('NaN')
nan
>>> float('Inf')
inf
>>> -float('Inf')
-inf
>>> float('Inf') == float('Inf')
True
>>> float('Inf') == 1
False
Example of how to perform a INSERT INTO SELECT with a WHERE clause.
INSERT INTO #test2 (id) SELECT id FROM #test1 WHERE id > 2
You could enforce the Node.js process timezone by setting the environment variable TZ
to UTC
So all time will be measured in UTC+00:00
Full list: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
Example package.json:
{
"scripts": {
"start": "TZ='UTC' node index.js"
}
}
from tkinter import *
def close_window():
import sys
sys.exit()
root = Tk()
frame = Frame (root)
frame.pack()
button = Button (frame, text="Good-bye", command=close_window)
button.pack()
mainloop()
Like this:
var myString = "19 51 2.108997";
var stringParts = myString.split(" ");
var html = "<span>" + stringParts[0] + " " + stringParts[1] + "</span> <span>" + stringParts[2] + "</span";
On Windows 10 since I had npm, I installed rimraf package. npm install rimraf -g
Backup all your databases one by one using command pg_dump -U $username --format=c --file=$mydatabase.sqlc $dbname
Then Installed Latest PostgreSQL Version i.e. 11.2 which prompted me to use port 5433 this time.
Followed by Uninstall of older versions of PostgreSQL mine was 10. Note the uninstaller may give a warning of not deleting folder C:\PostgreSQL\10\data
. That's why we have the next step using rimraf to permanently delete the folder and it's sub-folders.
change into PostgreSQL install directory and ran the command rimraf 10
. 10 is a directory name. Note use your older version of PostgreSQL i.e. 9.5 or something.
Now add C:\PostgreSQL\pg11\bin, C:\PostgreSQL\pg11\lib
into the Windows environmental variables. Note my new installed version is 11 thus why I am using pg11
.
Navigate to C:\PostgreSQL\data\pg11
then open postgresql.conf
edit port = 5433
to port = 5432
That's it. Open cmd and type psql -U postgres
You can now restore all your backed databases one by one using the command pg_restore -U $username --dbname=$databasename $filename
Sort each element then look for duplicates. There's a built-in function for sorting so you do not need to import anything
I use the following code to test the empty line with or without white spaces.
if len(line.strip()) == 0 :
# do something with empty line
.img-responsive {
margin: 0 auto;
}
you can write like above code in your document so no need to add one another class in image tag.
Here is a work around for inner bordered rect
using symbol
and use
.
Example: https://jsbin.com/yopemiwame/edit?html,output
SVG:
<svg>
<symbol id="inner-border-rect">
<rect class="inner-border" width="100%" height="100%" style="fill:rgb(0,255,255);stroke-width:10;stroke:rgb(0,0,0)">
</symbol>
...
<use xlink:href="#inner-border-rect" x="?" y="?" width="?" height="?">
</svg>
Note: Make sure to replace the ?
in use
with real values.
Background: The reason why this works is because symbol establishes a new viewport by replacing symbol
with svg
and creating an element in the shadow DOM. This svg
of the shadow DOM is then linked into your current SVG
element. Note that svg
s can be nested and every svg
creates a new viewport, which clips everything that overlaps, including the overlapping border. For a much more detailed overview of whats going on read this fantastic article by Sara Soueidan.
#if defined LINUX || defined ANDROID
// your code here
#endif /* LINUX || ANDROID */
or-
#if defined(LINUX) || defined(ANDROID)
// your code here
#endif /* LINUX || ANDROID */
Both above are the same, which one you use simply depends on your taste.
P.S.: #ifdef
is simply the short form of #if defined
, however, does not support complex condition.
Further-
#if defined LINUX && defined ANDROID
#if defined LINUX ^ defined ANDROID
$('td').click(function() {
var myCol = $(this).index();
var $tr = $(this).closest('tr');
var myRow = $tr.index();
});
This is the method I'm using in a project I am currently working on.
var exec = require('child_process').exec;
function execute(command, callback){
exec(command, function(error, stdout, stderr){ callback(stdout); });
};
Example of retrieving a git user:
module.exports.getGitUser = function(callback){
execute("git config --global user.name", function(name){
execute("git config --global user.email", function(email){
callback({ name: name.replace("\n", ""), email: email.replace("\n", "") });
});
});
};
If you've got a cell filled with spaces or blanks, you can use:
=Len(Trim(A2)) = 0
if the cell you were testing was A2
I'm under the impression that some enterprises (e.g.: JackBe) put encrypted JavaScript code inside *.gif files, rather than JS files, as an additional measure of obfuscation.
You can't. There's no self
in the class body, because no instance exists. You'd need to pass it, say, a str
containing the attribute name to lookup on the instance, which the returned function can then do, or use a different method entirely.
To upload files to your repo without using the command-line, simply type this after your repository name in the browser:
https://github.com/yourname/yourrepositoryname/upload/master
and then drag and drop your files.(provided you are on github and the repository has been created beforehand)
I've implemented a super-lightweight library to detect the used device based on some of the given answers: https://github.com/schickling/Device.swift
It can be installed via Carthage and be used like this:
import Device
let deviceType = UIDevice.currentDevice().deviceType
switch deviceType {
case .IPhone6: print("Do stuff for iPhone6")
case .IPadMini: print("Do stuff for iPad mini")
default: print("Check other available cases of DeviceType")
}
I'm guessing that you want something like
SELECT tab1.a, tab2.b, tab3.c, tab4.d
FROM table1 tab1
JOIN table2 tab2 ON (tab1.fg = tab2.fg)
LEFT OUTER JOIN table4 tab4 ON (tab1.ss = tab4.ss)
LEFT OUTER JOIN table3 tab3 ON (tab4.xya = tab3.xya and tab3.desc = 'XYZ')
LEFT OUTER JOIN table5 tab5 on (tab4.kk = tab5.kk AND
tab3.dd = tab5.dd)
Just for reference, here is a benchmark of different technique rendering performances,
http://jsperf.com/zp-string-concatenation/6
m,
You can resolve this following these steps:
server.port=8181
, or any other port of your choice. This will override the default port which is 8080delete from t
where id in (1, 4, 6, 7)
Real life example; find all but not current user:
var players = Players.find({ my_x: player.my_x, my_y: player.my_y, userId: {$ne: Meteor.userId()} });
Just for completeness, using the modern .format()
syntax:
>>> numbers = [1, 15, 255]
>>> ''.join('{:02X}'.format(a) for a in numbers)
'010FFF'
In your php.ini configuration file simply uncomment the extension:
;extension=php_pdo_mysql.dll
(You can find your php.ini file in the php folder where your stack server is installed.)
If you're on Windows make it: extension=php_pdo_mysql.dll
If you're on Linux make it: extension=pdo_mysql.so
And do a quick server restart.
If this isn't working for you, you may need to install pdo_mysql extension into your php library.
function insertOrdered(array, elem) {
let _array = array;
let i = 0;
while ( i < array.length && array[i] < elem ) {i ++};
_array.splice(i, 0, elem);
return _array;
}
Use a Timer
. Timer documentation.
Something close to:
@Html.DropDownListFor(m => m.UserRole,
new SelectList(Model.Roles, "UserRoleId", "UserRole", Model.Roles.First().UserRoleId),
new { /* any html attributes here */ })
You need a SelectList to populate the DropDownListFor. For any HTML attributes you need, you can add:
new { @class = "DropDown", @id = "dropdownUserRole" }
Your default alignment is probably 4 bytes. Either the 30 byte element got 32, or the structure as a whole was rounded up to the next 4 byte interval.
All of the answers seem to be missing the fact that you may need to complete some portion of work in coordinated fashion during graceful shutdown (for example, in an enterprise application).
@PreDestroy
allows you to execute shutdown code in the individual beans. Something more sophisticated would look like this:
@Component
public class ApplicationShutdown implements ApplicationListener<ContextClosedEvent> {
@Autowired ... //various components and services
@Override
public void onApplicationEvent(ContextClosedEvent event) {
service1.changeHeartBeatMessage(); // allows loadbalancers & clusters to prepare for the impending shutdown
service2.deregisterQueueListeners();
service3.finishProcessingTasksAtHand();
service2.reportFailedTasks();
service4.gracefullyShutdownNativeSystemProcessesThatMayHaveBeenLaunched();
service1.eventLogGracefulShutdownComplete();
}
}
If you do run()
in main method, the thread of main method will invoke the run
method instead of the thread you require to run.
The start()
method creates new thread and for which the run()
method has to be done
git reset
If all you want is to undo an overzealous "git add" run:
git reset
Your changes will be unstaged and ready for you to re-add as you please.
DO NOT RUN git reset --hard
.
It will not only unstage your added files, but will revert any changes you made in your working directory. If you created any new files in working directory, it will not delete them though.
If you have an instance function (i.e. one that gets passed self) you can use self to get a reference to the class using self.__class__
For example in the code below tornado creates an instance to handle get requests, but we can get hold of the get_handler
class and use it to hold a riak client so we do not need to create one for every request.
import tornado.web
import riak
class get_handler(tornado.web.requestHandler):
riak_client = None
def post(self):
cls = self.__class__
if cls.riak_client is None:
cls.riak_client = riak.RiakClient(pb_port=8087, protocol='pbc')
# Additional code to send response to the request ...
The simplest ways for me are these ones:
array = [1, 2, 2, 3]
Array#to_set
array.to_set.to_a
# [1, 2, 3]
Array#uniq
array.uniq
# [1, 2, 3]
Since MockMvcRequestBuilders#fileUpload
is deprecated, you'll want to use MockMvcRequestBuilders#multipart(String, Object...)
which returns a MockMultipartHttpServletRequestBuilder
. Then chain a bunch of file(MockMultipartFile)
calls.
Here's a working example. Given a @Controller
@Controller
public class NewController {
@RequestMapping(value = "/upload", method = RequestMethod.POST)
@ResponseBody
public String saveAuto(
@RequestPart(value = "json") JsonPojo pojo,
@RequestParam(value = "some-random") String random,
@RequestParam(value = "data", required = false) List<MultipartFile> files) {
System.out.println(random);
System.out.println(pojo.getJson());
for (MultipartFile file : files) {
System.out.println(file.getOriginalFilename());
}
return "success";
}
static class JsonPojo {
private String json;
public String getJson() {
return json;
}
public void setJson(String json) {
this.json = json;
}
}
}
and a unit test
@WebAppConfiguration
@ContextConfiguration(classes = WebConfig.class)
@RunWith(SpringJUnit4ClassRunner.class)
public class Example {
@Autowired
private WebApplicationContext webApplicationContext;
@Test
public void test() throws Exception {
MockMultipartFile firstFile = new MockMultipartFile("data", "filename.txt", "text/plain", "some xml".getBytes());
MockMultipartFile secondFile = new MockMultipartFile("data", "other-file-name.data", "text/plain", "some other type".getBytes());
MockMultipartFile jsonFile = new MockMultipartFile("json", "", "application/json", "{\"json\": \"someValue\"}".getBytes());
MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(webApplicationContext).build();
mockMvc.perform(MockMvcRequestBuilders.multipart("/upload")
.file(firstFile)
.file(secondFile)
.file(jsonFile)
.param("some-random", "4"))
.andExpect(status().is(200))
.andExpect(content().string("success"));
}
}
And the @Configuration
class
@Configuration
@ComponentScan({ "test.controllers" })
@EnableWebMvc
public class WebConfig extends WebMvcConfigurationSupport {
@Bean
public MultipartResolver multipartResolver() {
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
return multipartResolver;
}
}
The test should pass and give you output of
4 // from param
someValue // from json file
filename.txt // from first file
other-file-name.data // from second file
The thing to note is that you are sending the JSON just like any other multipart file, except with a different content type.
Get the first file from the control and then get the name of the file, it will ignore the file path on Chrome, and also will make correction of path for IE browsers. On saving the file, you have to use System.io.Path.GetFileName
method to get the file name only for IE browsers
var fileUpload = $("#ContentPlaceHolder1_FileUpload_mediaFile").get(0);
var files = fileUpload.files;
var mediafilename = "";
for (var i = 0; i < files.length; i++) {
mediafilename = files[i].name;
}
You can find <div>
by id
, look at it's style.display
property and toggle it from none
to block
and vice versa.
function showDiv(Div) {_x000D_
var x = document.getElementById(Div);_x000D_
if(x.style.display=="none") {_x000D_
x.style.display = "block";_x000D_
} else {_x000D_
x.style.display = "none";_x000D_
}_x000D_
}
_x000D_
<div id="welcomeDiv" style="display:none;" class="answer_list">WELCOME</div>_x000D_
<input type="button" name="answer" value="Show Div" onclick="showDiv('welcomeDiv')" />
_x000D_
Give your body
tag an overflow: scroll;
body {
overflow: scroll;
}
or if you only want a vertical scrollbar use overflow-y
body {
overflow-y: scroll;
}
You actually cannot draw Container Elements
But you can use a "foreignObject" with a "SVG" inside it to simulate what you need.
<svg width="640" height="480" xmlns="http://www.w3.org/2000/svg">
<foreignObject id="G" width="300" height="200">
<svg>
<rect fill="blue" stroke-width="2" height="112" width="84" y="55" x="55" stroke-linecap="null" stroke-linejoin="null" stroke-dasharray="null" stroke="#000000"/>
<ellipse fill="#FF0000" stroke="#000000" stroke-width="5" stroke-dasharray="null" stroke-linejoin="null" stroke-linecap="null" cx="155" cy="65" id="svg_7" rx="64" ry="56"/>
</svg>
<style>
#G {
background: #cff; border: 1px dashed black;
}
#G:hover {
background: #acc; border: 1px solid black;
}
</style>
</foreignObject>
</svg>
It looks like you are calling a non static member (a property or method, specifically setTextboxText
) from a static method (specifically SumData
). You will need to either:
Make the called member static also:
static void setTextboxText(int result)
{
// Write static logic for setTextboxText.
// This may require a static singleton instance of Form1.
}
Create an instance of Form1
within the calling method:
private static void SumData(object state)
{
int result = 0;
//int[] icount = (int[])state;
int icount = (int)state;
for (int i = icount; i > 0; i--)
{
result += i;
System.Threading.Thread.Sleep(1000);
}
Form1 frm1 = new Form1();
frm1.setTextboxText(result);
}
Passing in an instance of Form1
would be an option also.
Make the calling method a non-static instance method (of Form1
):
private void SumData(object state)
{
int result = 0;
//int[] icount = (int[])state;
int icount = (int)state;
for (int i = icount; i > 0; i--)
{
result += i;
System.Threading.Thread.Sleep(1000);
}
setTextboxText(result);
}
More info about this error can be found on MSDN.
Try this
$client = new \GuzzleHttp\Client();
$client->post(
'http://www.example.com/user/create',
array(
'form_params' => array(
'email' => '[email protected]',
'name' => 'Test user',
'password' => 'testpassword'
)
)
);
I found a somewhat hacky-feeling but much safer way of doing this that doesn't require typing the values twice or referencing the memory of the enum values, making it very unlikely to break.
Basically, instead of using an enum, make a struct with a single instance, and make all of the enum-values constants. The variables can then be queried using a Mirror
public struct Suit{
// the values
let spades = "?"
let hearts = "?"
let diamonds = "?"
let clubs = "?"
// make a single instance of the Suit struct, Suit.instance
struct SStruct{static var instance: Suit = Suit()}
static var instance : Suit{
get{return SStruct.instance}
set{SStruct.instance = newValue}
}
// an array with all of the raw values
static var allValues: [String]{
var values = [String]()
let mirror = Mirror(reflecting: Suit.instance)
for (_, v) in mirror.children{
guard let suit = v as? String else{continue}
values.append(suit)
}
return values
}
}
If you use this method, to get a single value you'll need to use Suit.instance.clubs
or Suit.instance.spades
But all of that is so boring... Let's do some stuff that makes this more like a real enum!
public struct SuitType{
// store multiple things for each suit
let spades = Suit("?", order: 4)
let hearts = Suit("?", order: 3)
let diamonds = Suit("?", order: 2)
let clubs = Suit("?", order: 1)
struct SStruct{static var instance: SuitType = SuitType()}
static var instance : SuitType{
get{return SStruct.instance}
set{SStruct.instance = newValue}
}
// a dictionary mapping the raw values to the values
static var allValuesDictionary: [String : Suit]{
var values = [String : Suit]()
let mirror = Mirror(reflecting: SuitType.instance)
for (_, v) in mirror.children{
guard let suit = v as? Suit else{continue}
values[suit.rawValue] = suit
}
return values
}
}
public struct Suit: RawRepresentable, Hashable{
public var rawValue: String
public typealias RawValue = String
public var hashValue: Int{
// find some integer that can be used to uniquely identify
// each value. In this case, we could have used the order
// variable because it is a unique value, yet to make this
// apply to more cases, the hash table address of rawValue
// will be returned, which should work in almost all cases
//
// you could also add a hashValue parameter to init() and
// give each suit a different hash value
return rawValue.hash
}
public var order: Int
public init(_ value: String, order: Int){
self.rawValue = value
self.order = order
}
// an array of all of the Suit values
static var allValues: [Suit]{
var values = [Suit]()
let mirror = Mirror(reflecting: SuitType.instance)
for (_, v) in mirror.children{
guard let suit = v as? Suit else{continue}
values.append(suit)
}
return values
}
// allows for using Suit(rawValue: "?"), like a normal enum
public init?(rawValue: String){
// get the Suit from allValuesDictionary in SuitType, or return nil if that raw value doesn't exist
guard let suit = SuitType.allValuesDictionary[rawValue] else{return nil}
// initialize a new Suit with the same properties as that with the same raw value
self.init(suit.rawValue, order: suit.order)
}
}
You can now do stuff like
let allSuits: [Suit] = Suit.allValues
or
for suit in Suit.allValues{
print("The suit \(suit.rawValue) has the order \(suit.order)")
}
However, To get a single you'll still need to use SuitType.instance.spades
or SuitType.instance.hearts
. To make this a little more intuitive, you could add some code to Suit
that allows you to use Suit.type.*
instead of SuitType.instance.*
public struct Suit: RawRepresentable, Hashable{
// ...your code...
static var type = SuitType.instance
// ...more of your code...
}
You can now use Suit.type.diamonds
instead of SuitType.instance.diamonds
, or Suit.type.clubs
instead of SuitType.instance.clubs
You need to go through SimpleDateFormat.format
in order to format the date as a string.
Here's an example that goes from String
-> Date
-> String
.
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
Date date = dateFormat.parse("31/05/2011");
System.out.println(dateFormat.format(date)); // prints 31/05/2011
// ^^^^^^
You can do it like so:
var mongoose = require('mongoose');
var id = mongoose.Types.ObjectId('4edd40c86762e0fb12000003');
The API Doc are very clear on this.
All generators implement the interface org.hibernate.id.IdentifierGenerator. This is a very simple interface. Some applications can choose to provide their own specialized implementations, however, Hibernate provides a range of built-in implementations. The shortcut names for the built-in generators are as follows:
increment
generates identifiers of type long, short or int that are unique only when no other process is inserting data into the same table. Do not use in a cluster.
identity
supports identity columns in DB2, MySQL, MS SQL Server, Sybase and HypersonicSQL. The returned identifier is of type long, short or int.
sequence
uses a sequence in DB2, PostgreSQL, Oracle, SAP DB, McKoi or a generator in Interbase. The returned identifier is of type long, short or int
hilo
uses a hi/lo algorithm to efficiently generate identifiers of type long, short or int, given a table and column (by default hibernate_unique_key and next_hi respectively) as a source of hi values. The hi/lo algorithm generates identifiers that are unique only for a particular database.
seqhilo
uses a hi/lo algorithm to efficiently generate identifiers of type long, short or int, given a named database sequence.
uuid
uses a 128-bit UUID algorithm to generate identifiers of type string that are unique within a network (the IP address is used). The UUID is encoded as a string of 32 hexadecimal digits in length.
guid
uses a database-generated GUID string on MS SQL Server and MySQL.
native
selects identity, sequence or hilo depending upon the capabilities of the underlying database.
assigned
lets the application assign an identifier to the object before save() is called. This is the default strategy if no element is specified.
select
retrieves a primary key, assigned by a database trigger, by selecting the row by some unique key and retrieving the primary key value.
foreign
uses the identifier of another associated object. It is usually used in conjunction with a primary key association.
sequence-identity
a specialized sequence generation strategy that utilizes a database sequence for the actual value generation, but combines this with JDBC3 getGeneratedKeys to return the generated identifier value as part of the insert statement execution. This strategy is only supported on Oracle 10g drivers targeted for JDK 1.4. Comments on these insert statements are disabled due to a bug in the Oracle drivers.
If you are building a simple application with not much concurrent users, you can go for increment, identity, hilo etc.. These are simple to configure and did not need much coding inside the db.
You should choose sequence or guid depending on your database. These are safe and better because the id
generation will happen inside the database.
Update: Recently we had an an issue with idendity where primitive type (int) this was fixed by using warapper type (Integer) instead.
In Windows add '& Pause' to the end of your command in the file.
Try using "/" instead of "\" for the path to your image. Some comments here seem to come from people that do not understand some of us are simply learning web development which in many cases is best done locally. So instead of using src=C:\Pics\H.gif use src="C:/Pics/H.gif" for an absolute path or just src="Pics/H.gif" for a relative path if your Pics are in a sub-directory of your html page's location). Note also, it is good practice to surround your path with quotes. otherwise you will have problems with paths that include spaces and other odd characters.
Basically, you need to catch the OperationCanceledException
and check the state of the cancellation token that was passed to SendAsync
(or GetAsync
, or whatever HttpClient
method you're using):
IsCancellationRequested
is true), it means the request really was canceledOf course, this isn't very convenient... it would be better to receive a TimeoutException
in case of timeout. I propose a solution here based on a custom HTTP message handler: Better timeout handling with HttpClient
subprocess.check_output()
returns a bytestring.
In Python 3, there's no implicit conversion between unicode (str
) objects and bytes
objects. If you know the encoding of the output, you can .decode()
it to get a string, or you can turn the \n
you want to add to bytes
with "\n".encode('ascii')
I want to mention something that caught me first when I was trying to adapt a SpriteKit-based app to avoid the round edges and "notch" of the new iPhone X, as suggested by the latest Human Interface Guidelines: The new property safeAreaLayoutGuide
of UIView
needs to be queried after the view has been added to the hierarchy (for example, on -viewDidAppear:
) in order to report a meaningful layout frame (otherwise, it just returns the full screen size).
From the property's documentation:
The layout guide representing the portion of your view that is unobscured by bars and other content. When the view is visible onscreen, this guide reflects the portion of the view that is not covered by navigation bars, tab bars, toolbars, and other ancestor views. (In tvOS, the safe area reflects the area not covered the screen's bezel.) If the view is not currently installed in a view hierarchy, or is not yet visible onscreen, the layout guide edges are equal to the edges of the view.
(emphasis mine)
If you read it as early as -viewDidLoad:
, the layoutFrame
of the guide will be {{0, 0}, {375, 812}}
instead of the expected {{0, 44}, {375, 734}}