Just put your credentials in the Url like this:
https://Username
:Password
@github.com/myRepoDir/myRepo.git
You may store it like this:
git remote add myrepo https://Userna...
...example to use it:
git push myrepo master
Now that is to List the url aliases:
git remote -v
...and that the command to delete one of them:
git remote rm myrepo
If a reboot does not correct the problem (as suggested by Greg Hegwill's answer) then check your PATH for conflicting installation(s) of the msys-1.0.dll (and possibly other related DLLs).
In my particular situation MinGW's installation of msys has a copy of that DLL in its bin
directory (<MinGW_Install_Path>\msys\1.0\bin
), and it was listed in the PATH. Git's cmd
directory was listed in the PATH, but its bin
was not. (Git's version of msys-1.0.dll is in the bin
directory. Apparently the default installation of MSys-Git does not add its bin
to the PATH.)
A temporary fix was to add Git's bin
directory to the PATH so that it appears before MinGW's paths. (A more permanent fix will likely involve sorting out the path conflicts between MinGW's msys and Git's and/or removing the duplicate msys installations.)
var consolidatedChildren =
from c in children
group c by new
{
c.School,
c.Friend,
c.FavoriteColor,
} into gcs
select new ConsolidatedChild()
{
School = gcs.Key.School,
Friend = gcs.Key.Friend,
FavoriteColor = gcs.Key.FavoriteColor,
Children = gcs.ToList(),
};
var consolidatedChildren =
children
.GroupBy(c => new
{
c.School,
c.Friend,
c.FavoriteColor,
})
.Select(gcs => new ConsolidatedChild()
{
School = gcs.Key.School,
Friend = gcs.Key.Friend,
FavoriteColor = gcs.Key.FavoriteColor,
Children = gcs.ToList(),
});
you can achive it with group join
var result = (from c in Customers
join oi in OrderItems on c.Id equals oi.Order.Customer.Id into g
Select new { customer = c, orderItems = g});
c is Customer and g is the customers order items.
As in a similar question, use display: inline-block
with a placeholder element to vertically center the span inside of a block element:
html, body, #container, #placeholder { height: 100%; }_x000D_
_x000D_
#content, #placeholder { display:inline-block; vertical-align: middle; }
_x000D_
<!doctype html>_x000D_
<html lang="en">_x000D_
<head>_x000D_
</head>_x000D_
_x000D_
<body>_x000D_
<div id="container">_x000D_
<span id="content">_x000D_
Content_x000D_
</span>_x000D_
<span id="placeholder"></span>_x000D_
</div>_x000D_
</body>_x000D_
</html>
_x000D_
Vertical alignment is only applied to inline elements or table cells, so use it along with display:inline-block
or display:table-cell
with a display:table
parent when vertically centering block elements.
References:
@fthiella 's solution is very elegant.
If in future you want show more than user_id
you could use joins, and there in one line could be all data you need.
If you want to use AND
conditions, and the conditions are in multiple lines in your table, you can use JOINS
example:
SELECT `w_name`.`user_id`
FROM `wp_usermeta` as `w_name`
JOIN `wp_usermeta` as `w_year` ON `w_name`.`user_id`=`w_year`.`user_id`
AND `w_name`.`meta_key` = 'first_name'
AND `w_year`.`meta_key` = 'yearofpassing'
JOIN `wp_usermeta` as `w_city` ON `w_name`.`user_id`=`w_city`.user_id
AND `w_city`.`meta_key` = 'u_city'
JOIN `wp_usermeta` as `w_course` ON `w_name`.`user_id`=`w_course`.`user_id`
AND `w_course`.`meta_key` = 'us_course'
WHERE
`w_name`.`meta_value` = '$us_name' AND
`w_year`.meta_value = '$us_yearselect' AND
`w_city`.`meta_value` = '$us_reg' AND
`w_course`.`meta_value` = '$us_course'
Other thing: Recommend to use prepared statements, because mysql_*
functions is not SQL injection save, and will be deprecated.
If you want to change your code the less as possible, you can use mysqli_
functions:
http://php.net/manual/en/book.mysqli.php
Recommendation:
Use indexes in this table. user_id
highly recommend to be and index, and recommend to be the meta_key
AND meta_value
too, for faster run of query.
The explain:
If you use AND
you 'connect' the conditions for one line. So if you want AND condition for multiple lines, first you must create one line from multiple lines, like this.
Tests: Table Data:
PRIMARY INDEX
int varchar(255) varchar(255)
/ \ |
+---------+---------------+-----------+
| user_id | meta_key | meta_value|
+---------+---------------+-----------+
| 1 | first_name | Kovge |
+---------+---------------+-----------+
| 1 | yearofpassing | 2012 |
+---------+---------------+-----------+
| 1 | u_city | GaPa |
+---------+---------------+-----------+
| 1 | us_course | PHP |
+---------+---------------+-----------+
The result of Query with $us_name='Kovge'
$us_yearselect='2012'
$us_reg='GaPa'
, $us_course='PHP'
:
+---------+
| user_id |
+---------+
| 1 |
+---------+
So it should works.
From the docs:
In npm 1.0, there are two ways to install things:
globally —- This drops modules in
{prefix}/lib/node_modules
, and puts executable files in{prefix}/bin
, where{prefix}
is usually something like/usr/local
. It also installs man pages in{prefix}/share/man
, if they’re supplied.locally —- This installs your package in the current working directory. Node modules go in
./node_modules
, executables go in./node_modules/.bin/
, and man pages aren’t installed at all.
You can get your {prefix}
with npm config get prefix
. (Useful when you installed node with nvm).
I would implement a simple function to wrap the host system's sleep function in C.
The way we do it (we use VB.Net) is to enclose the text with new lines in Chr(34) which is the char representing the double quotes and replace all CR-LF characters for LF.
why not use flexbox ? so wrap them into another div like that
.flexContainer { _x000D_
_x000D_
margin: 2px 10px;_x000D_
display: flex;_x000D_
} _x000D_
_x000D_
.left {_x000D_
flex-basis : 30%;_x000D_
}_x000D_
_x000D_
.right {_x000D_
flex-basis : 30%;_x000D_
}
_x000D_
<form id="new_production" class="simple_form new_production" novalidate="novalidate" method="post" action="/projects/1/productions" accept-charset="UTF-8">_x000D_
<div style="margin:0;padding:0;display:inline">_x000D_
<input type="hidden" value="?" name="utf8">_x000D_
<input type="hidden" value="2UQCUU+tKiKKtEiDtLLNeDrfBDoHTUmz5Sl9+JRVjALat3hFM=" name="authenticity_token">_x000D_
</div>_x000D_
<div class="flexContainer">_x000D_
<div class="left">Proj Name:</div>_x000D_
<div class="right">must have a name</div>_x000D_
</div>_x000D_
<div class="input string required"> </div>_x000D_
</form>
_x000D_
feel free to play with flex-basis percentage to get more customized space.
This will print all the subdirectories of the current directory:
print [name for name in os.listdir(".") if os.path.isdir(name)]
I'm not sure what you're doing with split("-")
, but perhaps this code will help you find a solution?
If you want the full pathnames of the directories, use abspath
:
print [os.path.abspath(name) for name in os.listdir(".") if os.path.isdir(name)]
Note that these pieces of code will only get the immediate subdirectories. If you want sub-sub-directories and so on, you should use walk
as others have suggested.
You can use:
>>> np.concatenate([array1, array2, ...])
e.g.
>>> import numpy as np
>>> a = [[1, 2, 3],[10, 20, 30]]
>>> b = [[100,200,300]]
>>> a = np.array(a) # not necessary, but numpy objects prefered to built-in
>>> b = np.array(b) # "^
>>> a
array([[ 1, 2, 3],
[10, 20, 30]])
>>> b
array([[100, 200, 300]])
>>> c = np.concatenate([a,b])
>>> c
array([[ 1, 2, 3],
[ 10, 20, 30],
[100, 200, 300]])
>>> print c
[[ 1 2 3]
[ 10 20 30]
[100 200 300]]
~-+-~-+-~-+-~
Sometimes, you will come across trouble if a numpy array object is initialized with incomplete values for its shape property. This problem is fixed by assigning to the shape property the tuple: (array_length, element_length).
Note: Here, 'array_length' and 'element_length' are integer parameters, which you substitute values in for. A 'tuple' is just a pair of numbers in parentheses.
e.g.
>>> import numpy as np
>>> a = np.array([[1,2,3],[10,20,30]])
>>> b = np.array([100,200,300]) # initialize b with incorrect dimensions
>>> a.shape
(2, 3)
>>> b.shape
(3,)
>>> c = np.concatenate([a,b])
Traceback (most recent call last):
File "<pyshell#191>", line 1, in <module>
c = np.concatenate([a,b])
ValueError: all the input arrays must have same number of dimensions
>>> b.shape = (1,3)
>>> c = np.concatenate([a,b])
>>> c
array([[ 1, 2, 3],
[ 10, 20, 30],
[100, 200, 300]])
bmleite has the correct answer about including the module.
If that is correct in your situation, you should also ensure that you are not redefining the modules in multiple files.
Remember:
angular.module('ModuleName', []) // creates a module.
angular.module('ModuleName') // gets you a pre-existing module.
So if you are extending a existing module, remember not to overwrite when trying to fetch it.
jvmtop is a command-line tool which provides a live-view at several metrics, including heap.
JvmTop 0.3 alpha (expect bugs) amd64 8 cpus, Linux 2.6.32-27, load avg 0.12
http://code.google.com/p/jvmtop
PID MAIN-CLASS HPCUR HPMAX NHCUR NHMAX CPU GC VM USERNAME #T DL
3370 rapperSimpleApp 165m 455m 109m 176m 0.12% 0.00% S6U37 web 21
11272 ver.resin.Resin [ERROR: Could not attach to VM]
27338 WatchdogManager 11m 28m 23m 130m 0.00% 0.00% S6U37 web 31
19187 m.jvmtop.JvmTop 20m 3544m 13m 130m 0.93% 0.47% S6U37 web 20
16733 artup.Bootstrap 159m 455m 166m 304m 0.12% 0.00% S6U37 web 46
Just paste
Debugger.Break();
any where in you code.
For Example ,
internal static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
private static void Main()
{
Debugger.Break();
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[]
{
new Service1()
};
ServiceBase.Run(ServicesToRun);
}
}
It will hit Debugger.Break();
when you run your program.
If you want date something in this style: Oct 23 2013 10:30AM
Use this
SELECT CONVERT(NVARCHAR(30),getdate(), 100)
convert()
method takes 3 parameters
It's not clear to me what you want, but I'll mention that the Date class also has a compareTo method, which can be used to determine with one call if two Date objects are equal or (if they aren't equal) which occurs sooner. This allows you to do something like:
switch (today.compareTo(questionDate)) {
case -1: System.out.println("today is sooner than questionDate"); break;
case 0: System.out.println("today and questionDate are equal"); break;
case 1: System.out.println("today is later than questionDate"); break;
default: System.out.println("Invalid results from date comparison"); break;
}
It should be noted that the API docs don't guarantee the results to be -1, 0, and 1, so you may want to use if-elses rather than a switch in any production code. Also, if the second date is null, you'll get a NullPointerException, so wrapping your code in a try-catch may be useful.
You can use these methods to get an empty guid. The result will be a guid with all it's digits being 0's - "00000000-0000-0000-0000-000000000000
".
new Guid()
default(Guid)
Guid.Empty
Python 3 includes an improved super() which allows use like this:
super().__init__(args)
Just a side note for similar problem (If we don't want to loop through):
How to lookup a dictionary using a variable key within Jinja template?
Here is an example:
{% set key = target_db.Schema.upper()+"__"+target_db.TableName.upper() %}
{{ dict_containing_df.get(key).to_html() | safe }}
It might be obvious. But we don't need curly braces within curly braces. Straight python syntax works. (I am posting because I was confusing to me...)
Alternatively, you can simply do
{{dict[target_db.Schema.upper()+"__"+target_db.TableName.upper()]).to_html() | safe }}
But it will spit an error when no key is found. So better to use get
in Jinja.
The question has already an answer, but if the problem has occurred by NuGet package in different versions in the same solution, you can try the following.
Open NuGet Package Manager, as you see my service project version is different than others.
Then update projects that contain an old version of your package.
You would need to have an instance of ClassA within ClassB or have ClassB inherit ClassA
class ClassA {
public function getName() {
echo $this->name;
}
}
class ClassB extends ClassA {
public function getName() {
parent::getName();
}
}
Without inheritance or an instance method, you'd need ClassA to have a static method
class ClassA {
public static function getName() {
echo "Rawkode";
}
}
--- other file ---
echo ClassA::getName();
If you're just looking to call the method from an instance of the class:
class ClassA {
public function getName() {
echo "Rawkode";
}
}
--- other file ---
$a = new ClassA();
echo $a->getName();
Regardless of the solution you choose, require 'ClassA.php
is needed.
Where do these values come from? The documentation for android:fontFamily does not list this information in any place
These are indeed not listed in the documentation. But they are mentioned here under the section 'Font families'. The document lists every new public API for Android Jelly Bean 4.1.
In the styles.xml file in the application I'm working on somebody listed this as the font family, and I'm pretty sure it's wrong:
Yes, that's wrong. You don't reference the font file, you have to use the font name mentioned in the linked document above. In this case it should have been this:
<item name="android:fontFamily">sans-serif</item>
Like the linked answer already stated, 12 variants are possible:
Regular (default):
<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">normal</item>
Italic:
<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">italic</item>
Bold:
<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">bold</item>
Bold-italic:
<item name="android:fontFamily">sans-serif</item>
<item name="android:textStyle">bold|italic</item>
Light:
<item name="android:fontFamily">sans-serif-light</item>
<item name="android:textStyle">normal</item>
Light-italic:
<item name="android:fontFamily">sans-serif-light</item>
<item name="android:textStyle">italic</item>
Thin :
<item name="android:fontFamily">sans-serif-thin</item>
<item name="android:textStyle">normal</item>
Thin-italic :
<item name="android:fontFamily">sans-serif-thin</item>
<item name="android:textStyle">italic</item>
Condensed regular:
<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">normal</item>
Condensed italic:
<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">italic</item>
Condensed bold:
<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">bold</item>
Condensed bold-italic:
<item name="android:fontFamily">sans-serif-condensed</item>
<item name="android:textStyle">bold|italic</item>
Medium:
<item name="android:fontFamily">sans-serif-medium</item>
<item name="android:textStyle">normal</item>
Medium-italic:
<item name="android:fontFamily">sans-serif-medium</item>
<item name="android:textStyle">italic</item>
Black:
<item name="android:fontFamily">sans-serif-black</item>
<item name="android:textStyle">italic</item>
For quick reference, this is how they all look like:
With literal syntax you can check as follows
static const NSString* kKeyToCheck = @"yourKey"
if (xyz[kKeyToCheck])
NSLog(@"Key: %@, has Value: %@", kKeyToCheck, xyz[kKeyToCheck]);
else
NSLog(@"Key pair do not exits for key: %@", kKeyToCheck);
Simply changing
public int compare(Dog d, Dog d1) {
return d.age - d1.age;
}
to
public int compare(Dog d, Dog d1) {
return d1.age - d.age;
}
should sort them in the reverse order of age if that is what you are looking for.
Update:
@Arian is right in his comments, one of the accepted ways of declaring a comparator for a dog would be where you declare it as a public static final field in the class itself.
class Dog implements Comparable<Dog> {
private String name;
private int age;
public static final Comparator<Dog> DESCENDING_COMPARATOR = new Comparator<Dog>() {
// Overriding the compare method to sort the age
public int compare(Dog d, Dog d1) {
return d.age - d1.age;
}
};
Dog(String n, int a) {
name = n;
age = a;
}
public String getDogName() {
return name;
}
public int getDogAge() {
return age;
}
// Overriding the compareTo method
public int compareTo(Dog d) {
return (this.name).compareTo(d.name);
}
}
You could then use it any where in your code where you would like to compare dogs as follows:
// Sorts the array list using comparator
Collections.sort(list, Dog.DESCENDING_COMPARATOR);
Another important thing to remember when implementing Comparable is that it is important that compareTo performs consistently with equals. Although it is not required, failing to do so could result in strange behaviour on some collections such as some implementations of Sets. See this post for more information on sound principles of implementing compareTo.
Update 2:
Chris is right, this code is susceptible to overflows for large negative values of age. The correct way to implement this in Java 7 and up would be Integer.compare(d.age, d1.age)
instead of d.age - d1.age
.
Update 3: With Java 8, your Comparator could be written a lot more succinctly as:
public static final Comparator<Dog> DESCENDING_COMPARATOR =
Comparator.comparing(Dog::getDogAge).reversed();
The syntax for Collections.sort
stays the same, but compare
can be written as
public int compare(Dog d, Dog d1) {
return DESCENDING_COMPARATOR.compare(d, d1);
}
In Netbeans, it may be helpful to design a max heap size. Go to Run => Set Project Configuration => Customise. In the Run of its popped up window, go to VM Option, fill in -Xms2048m -Xmx2048m
. It could solve heap size problem.
Use the Arrays.sort() method, the lowest value will be element0.
In terms of performance, this should not be expensive since the sort operation is already optimised. Also has the advantage of being concise.
private int min(int ... value) {
Arrays.sort(value);
return value[0];
}
Proof of concept
int[] intArr = {12, 5, 6, 9, 44, 28, 1, 4, 18, 2, 66, 13, 1, 33, 74, 12,
5, 6, 9, 44, 28, 1, 4, 18, 2, 66, 13};
// Sorting approach
long startTime = System.currentTimeMillis();
int minVal = min(intArr);
long endTime = System.currentTimeMillis();
System.out.println("Sorting: Min => " + minVal + " took => " + (endTime -
startTime));
System.out.println(startTime + " " + endTime);
System.out.println(" ");
// Scanning approach
minVal = 100;
startTime = System.currentTimeMillis();
for(int val : intArr) {
if (val < minVal)
minVal = val;
}
endTime = System.currentTimeMillis();
System.out.println("Iterating: Min => " + minVal + " took => " + (endTime
- startTime));
System.out.println(startTime + " " + endTime);
In my expression, count(enddate)
counts how many rows where the enddate
column is not null.
The count(*)
expression counts total rows.
By comparing, you can easily tell if any value in the enddate
column contains null
. If they are identical, then max(enddate)
is the result. Otherwise the case
will default to returning null
which is also the answer. This is a very popular way to do this exact check.
SELECT recordid,
MIN(startdate),
case when count(enddate) = count(*) then max(enddate) end
FROM tmp
GROUP BY recordid
A succinct way to convert a single column of boolean values to a column of integers 1 or 0:
df["somecolumn"] = df["somecolumn"].astype(int)
json_decode() is used to decode a json string to an array/data object. json_encode() creates a json string from an array or data. You are using the wrong function my friend, try json_encode();
Here is a solution am using with anular 6.
[readonly]="DateRelatedObject.bool_DatesEdit ? true : false"
plus above given answer
[attr.disabled]="valid == true ? true : null"
did't work for me plus be aware of using null cause it's expecting bool.
The selected answer dates from a while back. It is not practical to declare every binding in a custom HK2 binder. I'm using Tomcat and I just had to add one dependency. Even though it was designed for Glassfish it fits perfectly into other containers.
<dependency>
<groupId>org.glassfish.jersey.containers.glassfish</groupId>
<artifactId>jersey-gf-cdi</artifactId>
<version>${jersey.version}</version>
</dependency>
Make sure your container is properly configured too (see the documentation).
Actually I believe the MySQL optimizer carries out a TRUNCATE when you DELETE all rows.
Sometimes, it may help switching off AllowAutoRedirect
and setting both login POST
and page GET
requests the same user agent.
request.UserAgent = userAgent;
request.AllowAutoRedirect = false;
try this
Bitmap mBitmap = Bitmap.createScaledBitmap(Bitmap src, int dstWidth, int dstHeight, boolean filter);
protected void onDraw(Canvas canvas) {
canvas.drawColor(0xFFAAAAAA);
canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
}
There's a benchmark of various matrix packages available in java up on http://code.google.com/p/java-matrix-benchmark/ for a few different hardware configurations. But it's no substitute for doing your own benchmark.
Performance is going to vary with the type of hardware you've got (cpu, cores, memory, L1-3 cache, bus speed), the size of the matrices and the algorithms you intend to use. Different libraries have different takes on concurrency for different algorithms, so there's no single answer. You may also find that the overhead of translating to the form expected by a native library negates the performance advantage for your use case (some of the java libraries have more flexible options regarding matrix storage, which can be used for further performance optimizations).
Generally though, JAMA, Jampack and COLT are getting old, and do not represent the state of the current performance available in Java for linear algebra. More modern libraries make more effective use of multiple cores and cpu caches. JAMA was a reference implementation, and pretty much implements textbook algorithms with little regard to performance. COLT and IBM Ninja were the first java libraries to show that performance was possible in java, even if they lagged 50% behind native libraries.
The hosted network won't start if there are other active wifi adapters.
Disable the others whilst you're starting the hosted network.
Use a loop on the split values
string values = "0,1,2,3,4,5,6,7,8,9";
foreach(string value in values.split(','))
{
//do something with individual value
}
tr.group-title {
padding-top: .5rem;
border-top: 2rem solid lightgray;
}
tr.group-title > td h5 {
margin-top: -1.9rem;
}
<tbody>
<tr class="group-title">
<td colspan="6">
<h5 align="center">{{ group.title }}</h5>
</td>
</tr>
Works in Chrome and Edge
It is working for "greater than" functions not for less than.
For example:
select date_part('year',txndt)
from "table_name"
where date_part('year',txndt) > '2000' limit 10;
is working fine.
but for
select date_part('year',txndt)
from "table_name"
where date_part('year',txndt) < '2000' limit 10;
I am getting error.
Like so?
static void Main()
{
byte[] data = FromHex("47-61-74-65-77-61-79-53-65-72-76-65-72");
string s = Encoding.ASCII.GetString(data); // GatewayServer
}
public static byte[] FromHex(string hex)
{
hex = hex.Replace("-", "");
byte[] raw = new byte[hex.Length / 2];
for (int i = 0; i < raw.Length; i++)
{
raw[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
}
return raw;
}
Show the last n days from today:
import datetime
for i in range(0, 100):
print((datetime.date.today() + datetime.timedelta(i)).isoformat())
Output:
2016-06-29
2016-06-30
2016-07-01
2016-07-02
2016-07-03
2016-07-04
For components inside *ngIf
, another approach:
The component I wanted to select was inside a div's *ngIf statement, and @jsgoupil's answer above probably works (Thanks @jsgoupil!), but I ended up finding a way to avoid using *ngIf, by using CSS to hide the element.
When the condition in the [className] is true, the div gets displayed, and naming the component using # works and it can be selected from within the typescript code. When the condition is false, it's not displayed, and I don't need to select it anyway.
Component:
@Component({
selector: 'bla',
templateUrl: 'bla.component.html',
styleUrls: ['bla.component.scss']
})
export class BlaComponent implements OnInit, OnDestroy {
@ViewChild('myComponentWidget', {static: true}) public myComponentWidget: any;
@Input('action') action: ActionType; // an enum defined in our code. (action could also be declared locally)
constructor() {
etc;
}
// this lets you use an enum in the HMTL (ActionType.SomeType)
public get actionTypeEnum(): typeOf ActionType {
return ActionType;
}
public someMethodXYZ: void {
this.myComponentWidget.someMethod(); // use it like that, assuming the method exists
}
and then in the bla.component.html file:
<div [className]="action === actionTypeEnum.SomeType ? 'show-it' : 'do-not-show'">
<my-component #myComponentWidget etc></my-component>
</div>
<div>
<button type="reset" class="bunch-of-classes" (click)="someMethodXYZ()">
<span>XYZ</span>
</button>
</div>
and the CSS file:
::ng-deep {
.show-it {
display: block; // example, actually a lot more css in our code
}
.do-not-show {
display: none';
}
}
I don't know about javax.media.j3d, so I might be mistaken, but you usually want to investigate whether there is a memory leak. Well, as others note, if it was 64MB and you are doing something with 3d, maybe it's obviously too small...
But if I were you, I'll set up a profiler or visualvm, and let your application run for extended time (days, weeks...). Then look at the heap allocation history, and make sure it's not a memory leak.
If you use a profiler, like JProfiler or the one that comes with NetBeans IDE etc., you can see what object is being accumulating, and then track down what's going on.. Well, almost always something is incorrectly not removed from a collection...
I had a similar problem when I had to create a dictionary that contained the elements of an array and their count. The answer is relevant because, I flatten a list of lists, get the elements I need and then do a group and count. I used Python's map function to produce a tuple of element and it's count and groupby over the array. Note that the groupby takes the array element itself as the keyfunc. As a relatively new Python coder, I find it to me more easier to comprehend, while being Pythonic as well.
Before I discuss the code, here is a sample of data I had to flatten first:
{ "_id" : ObjectId("4fe3a90783157d765d000011"), "status" : [ "opencalais" ],
"content_length" : 688, "open_calais_extract" : { "entities" : [
{"type" :"Person","name" : "Iman Samdura","rel_score" : 0.223 },
{"type" : "Company", "name" : "Associated Press", "rel_score" : 0.321 },
{"type" : "Country", "name" : "Indonesia", "rel_score" : 0.321 }, ... ]},
"title" : "Indonesia Police Arrest Bali Bomb Planner", "time" : "06:42 ET",
"filename" : "021121bn.01", "month" : "November", "utctime" : 1037836800,
"date" : "November 21, 2002", "news_type" : "bn", "day" : "21" }
It is a query result from Mongo. The code below flattens a collection of such lists.
def flatten_list(items):
return sorted([entity['name'] for entity in [entities for sublist in
[item['open_calais_extract']['entities'] for item in items]
for entities in sublist])
First, I would extract all the "entities" collection, and then for each entities collection, iterate over the dictionary and extract the name attribute.
You need to use the Convert()
method in the Encoding
class:
Encoding
object that represents ASCII encodingEncoding
object that represents Unicode encodingEncoding.Convert()
with the source encoding, the destination encoding, and the string to be encodedThere is an example here:
using System;
using System.Text;
namespace ConvertExample
{
class ConvertExampleClass
{
static void Main()
{
string unicodeString = "This string contains the unicode character Pi(\u03a0)";
// Create two different encodings.
Encoding ascii = Encoding.ASCII;
Encoding unicode = Encoding.Unicode;
// Convert the string into a byte[].
byte[] unicodeBytes = unicode.GetBytes(unicodeString);
// Perform the conversion from one encoding to the other.
byte[] asciiBytes = Encoding.Convert(unicode, ascii, unicodeBytes);
// Convert the new byte[] into a char[] and then into a string.
// This is a slightly different approach to converting to illustrate
// the use of GetCharCount/GetChars.
char[] asciiChars = new char[ascii.GetCharCount(asciiBytes, 0, asciiBytes.Length)];
ascii.GetChars(asciiBytes, 0, asciiBytes.Length, asciiChars, 0);
string asciiString = new string(asciiChars);
// Display the strings created before and after the conversion.
Console.WriteLine("Original string: {0}", unicodeString);
Console.WriteLine("Ascii converted string: {0}", asciiString);
}
}
}
The short answer
Use one of these two methods:
For example:
InputStream inputStream = YourClass.class.getResourceAsStream("image.jpg");
--
The long answer
Typically, one would not want to load files using absolute paths. For example, don’t do this if you can help it:
File file = new File("C:\\Users\\Joe\\image.jpg");
This technique is not recommended for at least two reasons. First, it creates a dependency on a particular operating system, which prevents the application from easily moving to another operating system. One of Java’s main benefits is the ability to run the same bytecode on many different platforms. Using an absolute path like this makes the code much less portable.
Second, depending on the relative location of the file, this technique might create an external dependency and limit the application’s mobility. If the file exists outside the application’s current directory, this creates an external dependency and one would have to be aware of the dependency in order to move the application to another machine (error prone).
Instead, use the getResource()
methods in the Class
class. This makes the application much more portable. It can be moved to different platforms, machines, or directories and still function correctly.
Postman doesn't support websocket. Most of the extension and app I had ever seen were not working properly.
Solution which I found
Just login/ open your application in your browser, and open browser console. Then enter your socket event, and press enter.
socket.emit("event_name", {"id":"123"}, (res)=>{console.log(res); });
From long to DateTime: new DateTime(long ticks)
From DateTime to long: DateTime.Ticks
Line by line
int [] v = Stream.of(line.split(",\\s+"))
.mapToInt(Integer::parseInt)
.toArray();
var obj=[
{
id : "001",
name : "apple",
category : "fruit",
color : "red"
},
{
id : "002",
name : "melon",
category : "fruit",
color : "green"
},
{
id : "003",
name : "banana",
category : "fruit",
color : "yellow"
}
]
var tbl=$("<table/>").attr("id","mytable");
$("#div1").append(tbl);
for(var i=0;i<obj.length;i++)
{
var tr="<tr>";
var td1="<td>"+obj[i]["id"]+"</td>";
var td2="<td>"+obj[i]["name"]+"</td>";
var td3="<td>"+obj[i]["color"]+"</td></tr>";
$("#mytable").append(tr+td1+td2+td3);
}
When you say multiple queries do you mean multiple SQL statements as in:
UPDATE table1 SET a=b WHERE c;
UPDATE table2 SET a=b WHERE d;
UPDATE table3 SET a=b WHERE e;
Or multiple query function calls as in:
mySqlQuery(UPDATE table1 SET a=b WHERE c;)
mySqlQuery(UPDATE table2 SET a=b WHERE d;)
mySqlQuery(UPDATE table3 SET a=b WHERE e;)
The former can all be done using a single mySqlQuery call if that is what you wanted to achieve, simply call the mySqlQuery function in the following manner:
mySqlQuery(UPDATE table1 SET a=b WHERE c; UPDATE table2 SET a=b WHERE d; UPDATE table3 SET a=b WHERE e;)
This will execute all three queries with one mySqlQuery() call.
This is an excerpt from method of mine, which converts a DataTable
(the dt
variable) into an array and then writes the array into a Range
on a worksheet (wsh
var). You can also change the topRow
variable to whatever row you want the array of strings to be placed at.
object[,] arr = new object[dt.Rows.Count, dt.Columns.Count];
for (int r = 0; r < dt.Rows.Count; r++)
{
DataRow dr = dt.Rows[r];
for (int c = 0; c < dt.Columns.Count; c++)
{
arr[r, c] = dr[c];
}
}
Excel.Range c1 = (Excel.Range)wsh.Cells[topRow, 1];
Excel.Range c2 = (Excel.Range)wsh.Cells[topRow + dt.Rows.Count - 1, dt.Columns.Count];
Excel.Range range = wsh.get_Range(c1, c2);
range.Value = arr;
Of course you do not need to use an intermediate DataTable
like I did, the code excerpt is just to demonstrate how an array can be written to worksheet in single call.
You can use !!
, but if you want to do it recursively then below is one way to do it:
dataAt :: Int -> [a] -> a
dataAt _ [] = error "Empty List!"
dataAt y (x:xs) | y <= 0 = x
| otherwise = dataAt (y-1) xs
Java's Scanner class does not have a built in method to read from a Scanner character-by-character.
http://java.sun.com/javase/6/docs/api/java/util/Scanner.html
However, it should still be possible to fetch individual characters from the Scanner as follows:
Scanner sc:
char c = sc.findInLine(".").charAt(0);
And you could use it to fetch each character in your scanner like this:
while(sc.hasNext()){
char c = sc.findInLine(".").charAt(0);
System.out.println(c); //to print out every char in the scanner
}
The findInLine() method searches through your scanner and returns the first String that matches the regular expression you give it.
The necessary method is Mockito#verify:
public static <T> T verify(T mock,
VerificationMode mode)
mock
is your mocked object and mode
is the VerificationMode
that describes how the mock should be verified. Possible modes are:
verify(mock, times(5)).someMethod("was called five times");
verify(mock, never()).someMethod("was never called");
verify(mock, atLeastOnce()).someMethod("was called at least once");
verify(mock, atLeast(2)).someMethod("was called at least twice");
verify(mock, atMost(3)).someMethod("was called at most 3 times");
verify(mock, atLeast(0)).someMethod("was called any number of times"); // useful with captors
verify(mock, only()).someMethod("no other method has been called on the mock");
You'll need these static imports from the Mockito
class in order to use the verify
method and these verification modes:
import static org.mockito.Mockito.atLeast;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.atMost;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.only;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
So in your case the correct syntax will be:
Mockito.verify(mock, times(4)).send()
This verifies that the method send
was called 4 times on the mocked object. It will fail if it was called less or more than 4 times.
If you just want to check, if the method has been called once, then you don't need to pass a VerificationMode
. A simple
verify(mock).someMethod("was called once");
would be enough. It internally uses verify(mock, times(1)).someMethod("was called once");
.
It is possible to have multiple verification calls on the same mock to achieve a "between" verification. Mockito doesn't support something like this verify(mock, between(4,6)).someMethod("was called between 4 and 6 times");
, but we can write
verify(mock, atLeast(4)).someMethod("was called at least four times ...");
verify(mock, atMost(6)).someMethod("... and not more than six times");
instead, to get the same behaviour. The bounds are included, so the test case is green when the method was called 4, 5 or 6 times.
Someone over at Ozgrid answered a similar question. Basically, you just copy each sheet one at a time from Workbook1 to Workbook2.
Sub CopyWorkbook()
Dim currentSheet as Worksheet
Dim sheetIndex as Integer
sheetIndex = 1
For Each currentSheet in Worksheets
Windows("SOURCE WORKBOOK").Activate
currentSheet.Select
currentSheet.Copy Before:=Workbooks("TARGET WORKBOOK").Sheets(sheetIndex)
sheetIndex = sheetIndex + 1
Next currentSheet
End Sub
Disclaimer: I haven't tried this code out and instead just adopted the linked example to your problem. If nothing else, it should lead you towards your intended solution.
Suppose the data is in the B column, write in the C column the formula:
=SUBSTITUTE(B1," ","")
Copy&Paste the formula in the whole C column.
edit: using commas or semicolons as parameters separator depends on your regional settings (I have to use the semicolons). This is weird I think. Thanks to @tocallaghan and @pablete for pointing this out.
If anyone else is on this question, when using include('somepath.php');
and that file contains a function, the var must be declared there as well. The inclusion of $var=$var;
won't always work. Try running these:
one.php:
<?php
$vars = array('stack','exchange','.com');
include('two.php'); /*----- "paste" contents of two.php */
testFunction(); /*----- execute imported function */
?>
two.php:
<?php
function testFunction(){
global $vars; /*----- vars declared inside func! */
echo $vars[0].$vars[1].$vars[2];
}
?>
The answers above are correct, but I thought I would expand another answer by offering a way to do the same if you require to pass parameters into the query.
The SqlDataAdapter
is quick and simple, but only works if you're filling a table with a static request ie: a simple SELECT
without parameters.
Here is my way to do the same, but using a parameter to control the data I require in my table. And I use it to populate a DropDownList
.
//populate the Programs dropdownlist according to the student's study year / preference
DropDownList ddlPrograms = (DropDownList)DetailsView1.FindControl("ddlPrograms");
if (ddlPrograms != null)
{
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ATCNTV1ConnectionString"].ConnectionString))
{
try
{
con.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = "SELECT ProgramID, ProgramName FROM tblPrograms WHERE ProgramCatID > 0 AND ProgramStatusID = (CASE WHEN @StudyYearID = 'VPR' THEN 10 ELSE 7 END) AND ProgramID NOT IN (23,112,113) ORDER BY ProgramName";
cmd.Parameters.Add("@StudyYearID", SqlDbType.Char).Value = "11";
DataTable wsPrograms = new DataTable();
wsPrograms.Load(cmd.ExecuteReader());
//populate the Programs ddl list
ddlPrograms.DataSource = wsPrograms;
ddlPrograms.DataTextField = "ProgramName";
ddlPrograms.DataValueField = "ProgramID";
ddlPrograms.DataBind();
ddlPrograms.Items.Insert(0, new ListItem("<Select Program>", "0"));
}
catch (Exception ex)
{
// Handle the error
}
}
}
Enjoy
I will suggest you to use below the library because it allows you to set default values in one file and you can use it everywhere in the project without making one line of change. https://github.com/Shahbaz89khan/ShadowView
Following are the steps to push Docker Image to Private Repository of DockerHub
1- First check Docker Images using command
docker images
2- Check Docker Tag command Help
docker tag help
3- Now Tag a name to your created Image
docker tag localImgName:tagName DockerHubUser\Private-repoName:tagName(tag name is optional. Default name is latest)
4- Before pushing Image to DockerHub Private Repo, first login to DockerHub using command
docker login [provide dockerHub username and Password to login]
5- Now push Docker Image to your private Repo using command
docker push [options] ImgName[:tag] e.g docker push DockerHubUser\Private-repoName:tagName
6- Now navigate to the DockerHub Private Repo and you will see Docker image is pushed on your private Repository with name written as TagName in previous steps
The Do/While solution is more elegant, but if you do use just the While solution posted above, without the moveToPosition(-1) you will miss the first element (at least on the Contact query).
I suggest:
if (cursor.getCount() > 0) {
cursor.moveToPosition(-1);
while (cursor.moveToNext()) {
<do stuff>
}
}
Object.defineProperty(player, "health", {
get: function () {
return 10 + ( player.level * 15 );
}
});
Object.defineProperty
is used in order to make a new property on the player object. Object.defineProperty
is a function which is natively present in the JS runtime environemnt and takes the following arguments:
Object.defineProperty(obj, prop, descriptor)
The descriptor object is the interesting part. In here we can define the following things:
<boolean>
: If true
the property descriptor may be changed and the property may be deleted from the object. If configurable is false
the descriptor properties which are passed in Object.defineProperty
cannot be changed.<boolean>
: If true
the property may be overwritten using the assignment operator.<boolean>
: If true
the property can be iterated over in a for...in
loop. Also when using the Object.keys
function the key will be present. If the property is false
they will not be iterated over using a for..in
loop and not show up when using Object.keys
.<function>
: A function which is called whenever is the property is required. Instead of giving the direct value this function is called and the returned value is given as the value of the property<function>
: A function which is called whenever is the property is assigned. Instead of setting the direct value this function is called and the returned value is used to set the value of the property.const player = {_x000D_
level: 10_x000D_
};_x000D_
_x000D_
Object.defineProperty(player, "health", {_x000D_
configurable: true,_x000D_
enumerable: false,_x000D_
get: function() {_x000D_
console.log('Inside the get function');_x000D_
return 10 + (player.level * 15);_x000D_
}_x000D_
});_x000D_
_x000D_
console.log(player.health);_x000D_
// the get function is called and the return value is returned as a value_x000D_
_x000D_
for (let prop in player) {_x000D_
console.log(prop);_x000D_
// only prop is logged here, health is not logged because is not an iterable property._x000D_
// This is because we set the enumerable to false when defining the property_x000D_
}
_x000D_
$(window).load is an event that fires when the DOM and all the content (everything) on the page is fully loaded like CSS, images and frames. One best example is if we want to get the actual image size or to get the details of anything we use it.
$(document).ready() indicates that code in it need to be executed once the DOM got loaded and ready to be manipulated by script. It won't wait for the images to load for executing the jQuery script.
<script type = "text/javascript">
//$(window).load was deprecated in 1.8, and removed in jquery 3.0
// $(window).load(function() {
// alert("$(window).load fired");
// });
$(document).ready(function() {
alert("$(document).ready fired");
});
</script>
$(window).load fired after the $(document).ready().
$(window).load was deprecated in 1.8, and removed in jquery 3.0
I use EF database first in order to provide more flexibility and control over the database configuration.
EF code first and model first seemed cool at first, and provides database independence, however in doing this it does not allow you to specify what I consider very basic and common database configuration information. For example table indexes, security metadata, or have a primary key containing more than one column. I find I want to use these and other common database features and therefore have to do some database configuration directly anyway.
I find the default POCO classes generated during DB first are very clean, however lack the very useful data annotation attributes, or mappings to stored procedures. I used the T4 templates to overcome some of these limitations. T4 templates are awesome, especially when combined with your own metadata and partial classes.
Model first seems to have lots of potential, but is giving me lots of bugs during complex database schema refactoring. Not sure why.
Use perl -i, with a command that replaces the beginning of line 1 with what you want to insert (the .bk will have the effect that your original file is backed up):
perl -i.bk -pe 's/^/column1, column2, column3\n/ if($.==1)' testfile.csv
Or maybe and that is prob it
<img src="path" onclick="this.src='path'">
_x000D_
You Can Use This code
((AppCompatActivity) getActivity()).getSupportFragmentManager().beginTransaction().replace(R.id.YourFrameLayout, new YourFragment()).commit();
or You Can This Use Code
YourFragment fragments=(YourFragment) getSupportFragmentManager().findFragmentById(R.id.FrameLayout);
if (fragments==null) {
getSupportFragmentManager().beginTransaction().replace(R.id.FrameLayout, new Fragment_News()).commit();
}
without mentioning schema also you can get the required details Try this query->
select column_name,data_type from information_schema.columns where table_name = 'table_name';
In JavaScript Arrays and Objects are actually very similar, although on the outside they can look a bit different.
For an array:
var array = [];
array[0] = "hello";
array[1] = 5498;
array[536] = new Date();
As you can see arrays in JavaScript can be sparse (valid indicies don't have to be consecutive) and they can contain any type of variable! That's pretty convenient.
But as we all know JavaScript is strange, so here are some weird bits:
array["0"] === "hello"; // This is true
array["hi"]; // undefined
array["hi"] = "weird"; // works but does not save any data to array
array["hi"]; // still undefined!
This is because everything in JavaScript is an Object (which is why you can also create an array using new Array()
). As a result every index in an array is turned into a string and then stored in an object, so an array is just an object that doesn't allow anyone to store anything with a key that isn't a positive integer.
So what are Objects?
Objects in JavaScript are just like arrays but the "index" can be any string.
var object = {};
object[0] = "hello"; // OK
object["hi"] = "not weird"; // OK
You can even opt to not use the square brackets when working with objects!
console.log(object.hi); // Prints 'not weird'
object.hi = "overwriting 'not weird'";
You can go even further and define objects like so:
var newObject = {
a: 2,
};
newObject.a === 2; // true
To add my 2 cents, if you want to update your data source with the new value of your Control, you need to call UpdateSource()
instead of UpdateTarget()
:
((TextBox)sender).GetBindingExpression(ComboBox.TextProperty).UpdateSource();
Normally there's no need for that. First of all
echo $CLASSPATH
If there's something in there, you probably want to check Applications -> Utilites -> Java.
var i2 = JsonConvert.DeserializeObject(obj["id"].ToString(), type);
throws a parsing exception due to missing quotes around the first argument (I think). I got it to work by adding the quotes:
var i2 = JsonConvert.DeserializeObject("\"" + obj["id"].ToString() + "\"", type);
Here is what you want. In this case you do not want the list items to be treated as blocks that can wrap.
li{display:inline}
ul{overflow:hidden}
Swift 4:
tableView.deselectRow(at: indexPath, animated: true)
On Gitlab, markdown supports this : [[_TOC_]]
This is years later, working on a legacy site... For the life of me I couldn't get the ->andWhere()
or ->expr()->in()
solutions working.
Finally looked in the Doctrine mongodb-odb repo and found some very revealing tests:
public function testQueryWhereIn()
{
$qb = $this->dm->createQueryBuilder('Documents\User');
$choices = array('a', 'b');
$qb->field('username')->in($choices);
$expected = [
'username' => ['$in' => $choices],
];
$this->assertSame($expected, $qb->getQueryArray());
}
It worked for me!
You can find the tests on github here. Useful for clarifying all sorts of nonsense.
Note: My setup is using Doctrine MongoDb ODM v1.0.dev as far as i can make out.
If you need to install an older version (for example 0.25):
pod _0.25.0_ install
Update (thanks to @chaost for pointing this update out):
Mads Torgersen: "Extension everything didn’t make it into C# 8.0. It got “caught up”, if you will, in a very exciting debate about the further future of the language, and now we want to make sure we don’t add it in a way that inhibits those future possibilities. Sometimes language design is a very long game!"
Source: comments section in https://blogs.msdn.microsoft.com/dotnet/2018/11/12/building-c-8-0/
I stopped counting how many times over the years I opened this question with hopes to have seen this implemented.
Well, finally we can all rejoice! Microsoft is going to introduce this in their upcoming C# 8 release.
So instead of doing this...
public static class IntExtensions
{
public static bool Even(this int value)
{
return value % 2 == 0;
}
}
We'll be finally able to do it like so...
public extension IntExtension extends int
{
public bool Even => this % 2 == 0;
}
Source: https://blog.ndepend.com/c-8-0-features-glimpse-future/
Use DateTime with DateTime::format()
$datetime = new DateTime($dateTimeString);
echo $datetime->format('w');
import java.util.*;
public class MyFirstJava {
public static void main(String[] args)
{
Animal dog = new Animal();
dog.Info("Dog","Breezi","Lab","Chicken liver");
dog.Getname();
Animal dog2= new Animal();
dog2.Info("Dog", "pumpkin", "POM", "Pedigree");
dog2.Getname();
HashMap<String, HashMap<String, Object>> dogs = new HashMap<>();
dogs.put("dog1", new HashMap<>() {{put("Name",dog.name);
put("Food",dog.food);put("Age",3);}});
dogs.put("dog2", new HashMap<>() {{put("Name",dog2.name);
put("Food",dog2.food);put("Age",6);}});
//dogs.get("dog1");
System.out.print(dogs + "\n");
System.out.print(dogs.get("dog1").get("Age"));
} }
Yes, It should be alright to have both versions installed. It's actually pretty much expected nowadays. A lot of stuff is written in 2.7, but 3.5 is becoming the norm. I would recommend updating all your python to 3.5 ASAP, though.
Those steps should be able to be shortened down to:
hg pull
hg update -r MY_BRANCH -C
The -C
flag tells the update command to discard all local changes before updating.
However, this might still leave untracked files in your repository. It sounds like you want to get rid of those as well, so I would use the purge
extension for that:
hg pull
hg update -r MY_BRANCH -C
hg purge
In any case, there is no single one command you can ask Mercurial to perform that will do everything you want here, except if you change the process to that "full clone" method that you say you can't do.
It's the ternary operator ?
string newString = i == 1 ? "i is one" : "i is not one";
For the record, this is documented in How do I add resources to my JAR? (illustrated for unit tests but the same applies for a "regular" resource):
To add resources to the classpath for your unit tests, you follow the same pattern as you do for adding resources to the JAR except the directory you place resources in is
${basedir}/src/test/resources
. At this point you would have a project directory structure that would look like the following:my-app |-- pom.xml `-- src |-- main | |-- java | | `-- com | | `-- mycompany | | `-- app | | `-- App.java | `-- resources | `-- META-INF | |-- application.properties `-- test |-- java | `-- com | `-- mycompany | `-- app | `-- AppTest.java `-- resources `-- test.properties
In a unit test you could use a simple snippet of code like the following to access the resource required for testing:
... // Retrieve resource InputStream is = getClass().getResourceAsStream("/test.properties" ); // Do something with the resource ...
Only related with currency trading (Forex), but many Forex brokers are offering MetaTrader which let you code in MQL. The main problem with it (aside that it's limited to Forex) is that you've to code in MQL which might not be your preferred language.
Here's an example of a context manager to change the working directory. It is simpler than an ActiveState version referred to elsewhere, but this gets the job done.
cd
import os
class cd:
"""Context manager for changing the current working directory"""
def __init__(self, newPath):
self.newPath = os.path.expanduser(newPath)
def __enter__(self):
self.savedPath = os.getcwd()
os.chdir(self.newPath)
def __exit__(self, etype, value, traceback):
os.chdir(self.savedPath)
Or try the more concise equivalent(below), using ContextManager.
import subprocess # just to call an arbitrary command e.g. 'ls'
# enter the directory like this:
with cd("~/Library"):
# we are in ~/Library
subprocess.call("ls")
# outside the context manager we are back wherever we started.
I got the following error:
org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here
at org.springframework.orm.hibernate3.SpringSessionContext.currentSession(SpringSessionContext.java:63)
I fixed this by changing my hibernate properties file
hibernate.current_session_context_class=thread
My code and configuration file as follows
session = getHibernateTemplate().getSessionFactory().getCurrentSession();
session.beginTransaction();
session.createQuery(Qry).executeUpdate();
session.getTransaction().commit();
on properties file
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true
hibernate.query_factory_class=org.hibernate.hql.ast.ASTQueryTranslatorFactory
hibernate.current_session_context_class=thread
on cofiguration file
<properties>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.query.factory_class">${hibernate.query_factory_class}</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.current_session_context_class">${hibernate.current_session_context_class}</prop>
</props>
</property>
</properties>
Thanks,
Ashok
To open a new tab in the existing Firefox browser using Selenium WebDriver
FirefoxDriver driver = new FirefoxDriver();
driver.findElement(By.tagName("body")).sendKeys(Keys.CONTROL,"t");
Using solve
with a single parameter is a request to invert a matrix. The error message is telling you that your matrix is singular and cannot be inverted.
Guava has a method to do this for you: double[] Doubles.toArray(Collection<Double>)
This isn't necessarily going to be any faster than just looping through the Collection
and adding each Double
object to the array, but it's a lot less for you to write.
Ways to do it:
1) KeyValuePair (Best Performance - 0.32 ns):
KeyValuePair<int, int> Location(int p_1, int p_2, int p_3, int p_4)
{
return new KeyValuePair<int,int>(p_2 - p_1, p_4-p_3);
}
2) Tuple - 5.40 ns:
Tuple<int, int> Location(int p_1, int p_2, int p_3, int p_4)
{
return new Tuple<int, int>(p_2 - p_1, p_4-p_3);
}
3) out (1.64 ns) or ref 4) Create your own custom class/struct
ns -> nanoseconds
Reference: multiple-return-values.
Since this question was asked in 2010, there has been real simplification in how to do simple multithreading with Python with map and pool.
The code below comes from an article/blog post that you should definitely check out (no affiliation) - Parallelism in one line: A Better Model for Day to Day Threading Tasks. I'll summarize below - it ends up being just a few lines of code:
from multiprocessing.dummy import Pool as ThreadPool
pool = ThreadPool(4)
results = pool.map(my_function, my_array)
Which is the multithreaded version of:
results = []
for item in my_array:
results.append(my_function(item))
Description
Map is a cool little function, and the key to easily injecting parallelism into your Python code. For those unfamiliar, map is something lifted from functional languages like Lisp. It is a function which maps another function over a sequence.
Map handles the iteration over the sequence for us, applies the function, and stores all of the results in a handy list at the end.
Implementation
Parallel versions of the map function are provided by two libraries:multiprocessing, and also its little known, but equally fantastic step child:multiprocessing.dummy.
multiprocessing.dummy
is exactly the same as multiprocessing module, but uses threads instead (an important distinction - use multiple processes for CPU-intensive tasks; threads for (and during) I/O):
multiprocessing.dummy replicates the API of multiprocessing, but is no more than a wrapper around the threading module.
import urllib2
from multiprocessing.dummy import Pool as ThreadPool
urls = [
'http://www.python.org',
'http://www.python.org/about/',
'http://www.onlamp.com/pub/a/python/2003/04/17/metaclasses.html',
'http://www.python.org/doc/',
'http://www.python.org/download/',
'http://www.python.org/getit/',
'http://www.python.org/community/',
'https://wiki.python.org/moin/',
]
# Make the Pool of workers
pool = ThreadPool(4)
# Open the URLs in their own threads
# and return the results
results = pool.map(urllib2.urlopen, urls)
# Close the pool and wait for the work to finish
pool.close()
pool.join()
And the timing results:
Single thread: 14.4 seconds
4 Pool: 3.1 seconds
8 Pool: 1.4 seconds
13 Pool: 1.3 seconds
Passing multiple arguments (works like this only in Python 3.3 and later):
To pass multiple arrays:
results = pool.starmap(function, zip(list_a, list_b))
Or to pass a constant and an array:
results = pool.starmap(function, zip(itertools.repeat(constant), list_a))
If you are using an earlier version of Python, you can pass multiple arguments via this workaround).
(Thanks to user136036 for the helpful comment.)
you can use toSource method like this
alert(product.toSource());
To find out the Tomcat version, find this file – version.sh for *nix or version.bat for Windows. This version.sh file is normally located in the Tomcat bin folder.
phpmongodb@kumar:/usr/share/tomcat7/bin$ ./version.sh
Note
If you are not sure where is the version.sh file, try this command :
sudo find / -name "version.sh"
Find out everything about Tomcat7.
sudo find / -name "tomcat7"
JSON in Java has some great resources.
Maven dependency:
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20180813</version>
</dependency>
XML.java
is the class you're looking for:
import org.json.JSONObject;
import org.json.XML;
import org.json.JSONException;
public class Main {
public static int PRETTY_PRINT_INDENT_FACTOR = 4;
public static String TEST_XML_STRING =
"<?xml version=\"1.0\" ?><test attrib=\"moretest\">Turn this to JSON</test>";
public static void main(String[] args) {
try {
JSONObject xmlJSONObj = XML.toJSONObject(TEST_XML_STRING);
String jsonPrettyPrintString = xmlJSONObj.toString(PRETTY_PRINT_INDENT_FACTOR);
System.out.println(jsonPrettyPrintString);
} catch (JSONException je) {
System.out.println(je.toString());
}
}
}
Output is:
{"test": {
"attrib": "moretest",
"content": "Turn this to JSON"
}}
When I had similar problem gem update --system
helped me. Run this before bundle install
I used smth like this:
1.style.fontSize = 15.6/(document.getElementById("2").innerHTML.length)+ 'vw'
Where: 1 - parent div Id and 2 - Id of div with my text
Try adding multiple spaces (two spaces = one <br>
):
mycode(space)(space)(space)(space)
Unfortunately, most of the articles on state machines are written for C++ or other languages that have direct support for polymorphism as it's nice to model the states in an FSM implementation as classes that derive from an abstract state class.
However, it's pretty easy to implement state machines in C using either switch statements to dispatch events to states (for simple FSMs, they pretty much code right up) or using tables to map events to state transitions.
There are a couple of simple, but decent articles on a basic framework for state machines in C here:
Edit: Site "under maintenance", web archive links:
switch
statement-based state machines often use a set of macros to 'hide' the mechanics of the switch
statement (or use a set of if
/then
/else
statements instead of a switch
) and make what amounts to a "FSM language" for describing the state machine in C source. I personally prefer the table-based approach, but these certainly have merit, are widely used, and can be effective especially for simpler FSMs.
One such framework is outlined by Steve Rabin in "Game Programming Gems" Chapter 3.0 (Designing a General Robust AI Engine).
A similar set of macros is discussed here:
If you're also interested in C++ state machine implementations there's a lot more that can be found. I'll post pointers if you're interested.
Table1 or Table2 has some null values for common_id. Use this query instead:
select *
from Common
where common_id not in (select common_id from Table1 where common_id is not null)
and common_id not in (select common_id from Table2 where common_id is not null)
/*-------- Bootstrap Modal Popup in Center of Screen --------------*/
/*---------------extra css------*/
.modal {
text-align: center;
padding: 0 !important;
}
.modal:before {
content: '';
display: inline-block;
height: 100%;
vertical-align: middle;
margin-right: -4px;
}
.modal-dialog {
display: inline-block;
text-align: left;
vertical-align: middle;
}
/*----- Modal Popup -------*/
<div class="modal fade" role="dialog">
<div class="modal-dialog" >
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
<h5 class="modal-title">Header</h5>
</div>
<div class="modal-body">
body here
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
u can use :
(function () {
var requiredResolution = 10; // ms
var checkInterval = 1000; // ms
var tolerance = 20; // percent
var counter = 0;
var expected = checkInterval / requiredResolution;
//console.log('expected:', expected);
window.setInterval(function () {
counter++;
}, requiredResolution);
window.setInterval(function () {
var deviation = 100 * Math.abs(1 - counter / expected);
// console.log('is:', counter, '(off by', deviation , '%)');
if (deviation > tolerance) {
console.warn('Timer resolution not sufficient!');
}
counter = 0;
}, checkInterval);
})();
Not sure about solutions but a temporary workaround is to ask eslint to ignore it by adding the following on top of the problem line.
// eslint-disable-next-line @typescript-eslint/no-unused-expressions
I don't suggest you just hidding the stricts errors on your project. Intead, you should turn your method to static or try to creat a new instance of the object:
$var = new YourClass();
$var->method();
You can also use the new way to do the same since PHP 5.4:
(new YourClass)->method();
I hope it helps you!
I used Palash's answer given above but it was somewhat incomplete, I had to provide permission like this
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
uri = FileProvider.getUriForFile(this, getPackageName() + ".provider", new File(path));
List<ResolveInfo> resInfoList = getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo resolveInfo : resInfoList) {
String packageName = resolveInfo.activityInfo.packageName;
grantUriPermission(packageName, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
}
}else {
uri = Uri.fromFile(new File(path));
}
intent.setDataAndType(uri, "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
@NotNull
is a JSR 303 Bean Validation annotation. It has nothing to do with database constraints itself. As Hibernate is the reference implementation of JSR 303, however, it intelligently picks up on these constraints and translates them into database constraints for you, so you get two for the price of one. @Column(nullable = false)
is the JPA way of declaring a column to be not-null. I.e. the former is intended for validation and the latter for indicating database schema details. You're just getting some extra (and welcome!) help from Hibernate on the validation annotations.
Sometimes you need to reset ADB. To do that, in Eclipse, go:
Window>> Show View >> Android (Might be found in the "Other" option)>>Devices
in the device Tab, click the down arrow, and choose reset adb.
My solution was to remove the Eclipse ADT plugin via menu "Help > About Eclipse SDK > Installation Details". Eclipse will restart.
Next go to Menu "Help > Install New Software", then add the ADT plugin url "https://dl-ssl.google.com/android/eclipse" (or select the existing link from the dropdown).
This will re-install the latest ADT, including the DDMS files.
The Android Development Tools (ADT) plugin for Eclipse includes a visual editor for android application layout files:
Is there a way to set the session timeout programatically
There are basically three ways to set the session timeout value:
session-timeout
in the standard web.xml
file ~or~session-timeout
value (and thus configuring it at the server level) ~or~HttpSession. setMaxInactiveInterval(int seconds)
method in your Servlet or JSP. But note that the later option sets the timeout value for the current session, this is not a global setting.
If you don't create a root window, Tkinter will create one for you when you try to create any other widget. Thus, in your __init__
, because you haven't yet created a root window when you initialize the frame, Tkinter will create one for you. Then, you call make_widgets
which creates a second root window. That is why you are seeing two windows.
A well-written Tkinter program should always explicitly create a root window before creating any other widgets.
When you modify your code to explicitly create the root window, you'll end up with one window with the expected title.
Example:
from tkinter import Tk, Button, Frame, Entry, END
class ABC(Frame):
def __init__(self,parent=None):
Frame.__init__(self,parent)
self.parent = parent
self.pack()
self.make_widgets()
def make_widgets(self):
# don't assume that self.parent is a root window.
# instead, call `winfo_toplevel to get the root window
self.winfo_toplevel().title("Simple Prog")
# this adds something to the frame, otherwise the default
# size of the window will be very small
label = Entry(self)
label.pack(side="top", fill="x")
root = Tk()
abc = ABC(root)
root.mainloop()
Also note the use of self.make_widgets()
rather than ABC.make_widgets(self)
. While both end up doing the same thing, the former is the proper way to call the function.
Another option if you don't have Python 2.6:
import commands
n = commands.getoutput("grep -c processor /proc/cpuinfo")
You can use .deepEqual()
const { assert } = require('chai');
assert.deepEqual([0,0], [0,0]);
if "ABCD" in "xxxxABCDyyyy":
# whatever
com.google.gson.JsonParser#parse(java.lang.String)
is now deprecated
so use com.google.gson.JsonParser#parseString
, it works pretty well
Kotlin Example:
val mJsonObject = JsonParser.parseString(myStringJsonbject).asJsonObject
Java Example:
JsonObject mJsonObject = JsonParser.parseString(myStringJsonbject).getAsJsonObject();
In my case it was an issue of the PHP version.
The .phar file I was using was not compatible with PHP 5.3.9. Switching interpreter to PHP 7 did fix it.
Yep, I ended up overriding the /admin/jsi18n/ url.
Here's what I added in my urls.py. Make sure it's above the /admin/ url
(r'^admin/jsi18n', i18n_javascript),
And here is the i18n_javascript function I created.
from django.contrib import admin
def i18n_javascript(request):
return admin.site.i18n_javascript(request)
It's almost always advisable to not use scriptlets in your JSP. They're considered bad form. Instead, try using JSTL (JSP Standard Tag Library) combined with EL (Expression Language) to run the conditional logic you're trying to do. As an added benefit, JSTL also includes other important features like looping.
Instead of:
<%String user=request.getParameter("user"); %>
<%if(user == null || user.length() == 0){
out.print("I see! You don't have a name.. well.. Hello no name");
}
else {%>
<%@ include file="response.jsp" %>
<% } %>
Use:
<c:choose>
<c:when test="${empty user}">
I see! You don't have a name.. well.. Hello no name
</c:when>
<c:otherwise>
<%@ include file="response.jsp" %>
</c:otherwise>
</c:choose>
Also, unless you plan on using response.jsp somewhere else in your code, it might be easier to just include the html in your otherwise statement:
<c:otherwise>
<h1>Hello</h1>
${user}
</c:otherwise>
Also of note. To use the core tag, you must import it as follows:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
You want to make it so the user will receive a message when the user submits a username. The easiest way to do this is to not print a message at all when the "user" param is null
. You can do some validation to give an error message when the user submits null
. This is a more standard approach to your problem. To accomplish this:
In scriptlet:
<% String user = request.getParameter("user");
if( user != null && user.length() > 0 ) {
<%@ include file="response.jsp" %>
}
%>
In jstl:
<c:if test="${not empty user}">
<%@ include file="response.jsp" %>
</c:if>
Try this
$data = array(
'email' =>$email,
'last_ip' => $last_ip
);
$where = array('username ' => $username , 'status ' => $status);
$this->db->where($where);
$this->db->update('table_user ', $data);
This worked for me:
BindingProvider bp = (BindingProvider) port;
Map<String, Object> map = bp.getRequestContext();
map.put(BindingProvider.USERNAME_PROPERTY, "aspbbo");
map.put(BindingProvider.PASSWORD_PROPERTY, "9FFFN6P");
int days = (int) (milliseconds / 86 400 000 )
Windows 10 Home Edition does not have Local Users and Groups option so that is the reason you aren't able to see that in Computer Management.
You can use User Accounts by pressing Window
+R
, typing netplwiz
and pressing OK as described here.
Basic subsetting:
album2 <- album2[, -5] #delete column 5
album2 <- album2[, -c(5:7)] # delete columns 5 through 7
The StartsWith method will be faster, as there is no overhead of interpreting a regular expression, but here is how you do it:
if (Regex.IsMatch(theString, "^(mailto|ftp|joe):")) ...
The ^
mathes the start of the string. You can put any protocols between the parentheses separated by |
characters.
Another approach that is much faster, is to get the start of the string and use in a switch. The switch sets up a hash table with the strings, so it's faster than comparing all the strings:
int index = theString.IndexOf(':');
if (index != -1) {
switch (theString.Substring(0, index)) {
case "mailto":
case "ftp":
case "joe":
// do something
break;
}
}
A server-side solution is more compatible, until the "download" attribute is implemented in all the browsers.
One Python example could be a custom HTTP request handler for a filestore. The links that point to the filestore are generated like this:
http://www.myfilestore.com/filestore/13/130787e71/download_as/desiredName.pdf
Here is the code:
class HTTPFilestoreHandler(SimpleHTTPRequestHandler):
def __init__(self, fs_path, *args):
self.fs_path = fs_path # Filestore path
SimpleHTTPRequestHandler.__init__(self, *args)
def send_head(self):
# Overwrite SimpleHTTPRequestHandler.send_head to force download name
path = self.path
get_index = (path == '/')
self.log_message("path: %s" % path)
if '/download_as/' in path:
p_parts = path.split('/download_as/')
assert len(p_parts) == 2, 'Bad download link:' + path
path, download_as = p_parts
path = self.translate_path(path )
f = None
if os.path.isdir(path):
if not self.path.endswith('/'):
# Redirect browser - doing basically what Apache does
self.send_response(301)
self.send_header("Location", self.path + "/")
self.end_headers()
return None
else:
return self.list_directory(path)
ctype = self.guess_type(path)
try:
f = open(path, 'rb')
except IOError:
self.send_error(404, "File not found")
return None
self.send_response(200)
self.send_header("Content-type", ctype)
fs = os.fstat(f.fileno())
self.send_header("Expires", '0')
self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
self.send_header("Cache-Control", 'must-revalidate, post-check=0, pre-check=0')
self.send_header("Content-Transfer-Encoding", 'binary')
if download_as:
self.send_header("Content-Disposition", 'attachment; filename="%s"' % download_as)
self.send_header("Content-Length", str(fs[6]))
self.send_header("Connection", 'close')
self.end_headers()
return f
class HTTPFilestoreServer:
def __init__(self, fs_path, server_address):
def handler(*args):
newHandler = HTTPFilestoreHandler(fs_path, *args)
newHandler.protocol_version = "HTTP/1.0"
self.server = BaseHTTPServer.HTTPServer(server_address, handler)
def serve_forever(self, *args):
self.server.serve_forever(*args)
def start_server(fs_path, ip_address, port):
server_address = (ip_address, port)
httpd = HTTPFilestoreServer(fs_path, server_address)
sa = httpd.server.socket.getsockname()
print "Serving HTTP on", sa[0], "port", sa[1], "..."
httpd.serve_forever()
Here is a working example of above. http://jsfiddle.net/z7L6m2sc/ Now select2 has been updated the classes have change may be why you cannot get it to work. Here is the css....
.select2-dropdown.select2-dropdown--below{
width: 148px !important;
}
.select2-container--default .select2-selection--single{
padding:6px;
height: 37px;
width: 148px;
font-size: 1.2em;
position: relative;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
background-image: -khtml-gradient(linear, left top, left bottom, from(#424242), to(#030303));
background-image: -moz-linear-gradient(top, #424242, #030303);
background-image: -ms-linear-gradient(top, #424242, #030303);
background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #424242), color-stop(100%, #030303));
background-image: -webkit-linear-gradient(top, #424242, #030303);
background-image: -o-linear-gradient(top, #424242, #030303);
background-image: linear-gradient(#424242, #030303);
width: 40px;
color: #fff;
font-size: 1.3em;
padding: 4px 12px;
height: 27px;
position: absolute;
top: 0px;
right: 0px;
width: 20px;
}
As a general rule, you can use Database_Default collation so you don't need to figure out which one to use. However, I strongly suggest reading Simons Liew's excellent article Understanding the COLLATE DATABASE_DEFAULT clause in SQL Server
SELECT *
FROM [FAEB].[dbo].[ExportaComisiones] AS f
JOIN [zCredifiel].[dbo].[optPerson] AS p
ON (p.vTreasuryId = f.RFC) COLLATE Database_Default
<html>
<head>
<script type="text/javascript">
function GetTimeZoneOffset() {
var d = new Date()
var gmtOffSet = -d.getTimezoneOffset();
var gmtHours = Math.floor(gmtOffSet / 60);
var GMTMin = Math.abs(gmtOffSet % 60);
var dot = ".";
var retVal = "" + gmtHours + dot + GMTMin;
document.getElementById('<%= offSet.ClientID%>').value = retVal;
}
</script>
</head>
<body onload="GetTimeZoneOffset()">
<asp:HiddenField ID="clientDateTime" runat="server" />
<asp:HiddenField ID="offSet" runat="server" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</body>
</html>
key point to notice here is,body has an attribute onload
. Just give it a function name and that function will be called on page load.
Alternatively, you can also call the function on page load event like this
<html>
<head>
<script type="text/javascript">
window.onload = load();
function load() {
var d = new Date()
var gmtOffSet = -d.getTimezoneOffset();
var gmtHours = Math.floor(gmtOffSet / 60);
var GMTMin = Math.abs(gmtOffSet % 60);
var dot = ".";
var retVal = "" + gmtHours + dot + GMTMin;
document.getElementById('<%= offSet.ClientID%>').value = retVal;
}
</script>
</head>
<body >
<asp:HiddenField ID="clientDateTime" runat="server" />
<asp:HiddenField ID="offSet" runat="server" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></body>
</body>
</html>
<select id="list">
<option value="op3">option 3</option>
<option value="op1">option 1</option>
<option value="op2">option 2</option>
</select>
var options = $("#list option"); // Collect options
options.detach().sort(function(a,b) { // Detach from select, then Sort
var at = $(a).text();
var bt = $(b).text();
return (at > bt)?1:((at < bt)?-1:0); // Tell the sort function how to order
});
options.appendTo("#list"); // Re-attach to select
I used tracevipin's solution, which worked fantastically. I provide a slightly modified version here for anyone like me who likes to find easily readable code, and compress it after it's understood. I've also used .detach
instead of .remove
to preserve any bindings on the option DOM elements.
I think you have to options:
Build a dynamic SQL using sys.tables
and sys.columns
to perform the search (example here).
Use any program that have this function. An example of this is SQL Workbench (free).
Instead of using a dot, like: 1.2, try to input like this: 1,2.
<button [disabled]="this.model.IsConnected() == false"
[ngClass]="setStyles()"
class="action-button action-button-selected button-send"
(click)= "this.Send()">
SEND
</button>
.ts code
setStyles()
{
let styles = {
'action-button-disabled': this.model.IsConnected() == false
};
return styles;
}
Something you can try is using the bind method, I think this achieves what you were asking for. If nothing else, it's still very useful.
function doClick(elem, func) {
var diffElem = document.getElementById('some_element'); //could be the same or different element than the element in the doClick argument
diffElem.addEventListener('click', func.bind(diffElem, elem))
}
function clickEvent(elem, evt) {
console.log(this);
console.log(elem);
// 'this' and elem can be the same thing if the first parameter
// of the bind method is the element the event is being attached to from the argument passed to doClick
console.log(evt);
}
var elem = document.getElementById('elem_to_do_stuff_with');
doClick(elem, clickEvent);
Create the following method:
public class Logger {
public static void log(String message) {
PrintWriter out = new PrintWriter(new FileWriter("output.txt", true), true);
out.write(message);
out.close();
}
}
(I haven't included the proper IO handling in the above class, and it won't compile - do it yourself. Also consider configuring the file name. Note the "true" argument. This means the file will not be re-created each time you call the method)
Then instead of System.out.println(str)
call Logger.log(str)
This manual approach is not preferable. Use a logging framework - slf4j, log4j, commons-logging, and many more
Using resources at http://www.lfd.uci.edu/~gohlke/pythonlibs/#scipy will solve the problem. However, you should be careful about versions compatibility. After trying for several times, finally I decided to uninstall python and then installed a fresh version of python along with numpy and then installed scipy and this resolved my problem.
This information is available in the sys.version
string in the sys
module:
>>> import sys
Human readable:
>>> print(sys.version) # parentheses necessary in python 3.
2.5.2 (r252:60911, Jul 31 2008, 17:28:52)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)]
For further processing, use sys.version_info
or sys.hexversion
:
>>> sys.version_info
(2, 5, 2, 'final', 0)
# or
>>> sys.hexversion
34014192
To ensure a script runs with a minimal version requirement of the Python interpreter add this to your code:
assert sys.version_info >= (2, 5)
This compares major and minor version information. Add micro (=0
, 1
, etc) and even releaselevel (='alpha'
,'final'
, etc) to the tuple as you like. Note however, that it is almost always better to "duck" check if a certain feature is there, and if not, workaround (or bail out). Sometimes features go away in newer releases, being replaced by others.
I tested the performance difference between x*x*...
vs pow(x,i)
for small i
using this code:
#include <cstdlib>
#include <cmath>
#include <boost/date_time/posix_time/posix_time.hpp>
inline boost::posix_time::ptime now()
{
return boost::posix_time::microsec_clock::local_time();
}
#define TEST(num, expression) \
double test##num(double b, long loops) \
{ \
double x = 0.0; \
\
boost::posix_time::ptime startTime = now(); \
for (long i=0; i<loops; ++i) \
{ \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
} \
boost::posix_time::time_duration elapsed = now() - startTime; \
\
std::cout << elapsed << " "; \
\
return x; \
}
TEST(1, b)
TEST(2, b*b)
TEST(3, b*b*b)
TEST(4, b*b*b*b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long i=0; i<loops; ++i)
{
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std::pow(base, exponent);
}
boost::posix_time::time_duration elapsed = now() - startTime;
std::cout << elapsed << " ";
return x;
}
int main()
{
using std::cout;
long loops = 100000000l;
double x = 0.0;
cout << "1 ";
x += testpow<1>(rand(), loops);
x += test1(rand(), loops);
cout << "\n2 ";
x += testpow<2>(rand(), loops);
x += test2(rand(), loops);
cout << "\n3 ";
x += testpow<3>(rand(), loops);
x += test3(rand(), loops);
cout << "\n4 ";
x += testpow<4>(rand(), loops);
x += test4(rand(), loops);
cout << "\n5 ";
x += testpow<5>(rand(), loops);
x += test5(rand(), loops);
cout << "\n" << x << "\n";
}
Results are:
1 00:00:01.126008 00:00:01.128338
2 00:00:01.125832 00:00:01.127227
3 00:00:01.125563 00:00:01.126590
4 00:00:01.126289 00:00:01.126086
5 00:00:01.126570 00:00:01.125930
2.45829e+54
Note that I accumulate the result of every pow calculation to make sure the compiler doesn't optimize it away.
If I use the std::pow(double, double)
version, and loops = 1000000l
, I get:
1 00:00:00.011339 00:00:00.011262
2 00:00:00.011259 00:00:00.011254
3 00:00:00.975658 00:00:00.011254
4 00:00:00.976427 00:00:00.011254
5 00:00:00.973029 00:00:00.011254
2.45829e+52
This is on an Intel Core Duo running Ubuntu 9.10 64bit. Compiled using gcc 4.4.1 with -o2 optimization.
So in C, yes x*x*x
will be faster than pow(x, 3)
, because there is no pow(double, int)
overload. In C++, it will be the roughly same. (Assuming the methodology in my testing is correct.)
This is in response to the comment made by An Markm:
Even if a using namespace std
directive was issued, if the second parameter to pow
is an int
, then the std::pow(double, int)
overload from <cmath>
will be called instead of ::pow(double, double)
from <math.h>
.
This test code confirms that behavior:
#include <iostream>
namespace foo
{
double bar(double x, int i)
{
std::cout << "foo::bar\n";
return x*i;
}
}
double bar(double x, double y)
{
std::cout << "::bar\n";
return x*y;
}
using namespace foo;
int main()
{
double a = bar(1.2, 3); // Prints "foo::bar"
std::cout << a << "\n";
return 0;
}
ElektroStudios answer is a bit misleading.
"when you launch a bat file the working dir is the dir where it was launched" This is true if the user clicks on the batch file in the explorer.
However, if the script is called from another script using the CALL command, the current working directory does not change.
Thus, inside your script, it is better to use %~dp0subfolder\file1.txt
Please also note that %~dp0 will end with a backslash when the current script is not in the current working directory. Thus, if you need the directory name without a trailing backslash, you could use something like
call :GET_THIS_DIR
echo I am here: %THIS_DIR%
goto :EOF
:GET_THIS_DIR
pushd %~dp0
set THIS_DIR=%CD%
popd
goto :EOF
ng --version command returns the details of the version of Angular CLI installed
You are close, but the parameter you pass to SecureStringToBSTR
must be a SecureString
. You appear to be passing the result of ConvertFrom-SecureString
, which is an encrypted standard string. So call ConvertTo-SecureString
on this before passing to SecureStringToBSTR
.
$SecurePassword = ConvertTo-SecureString $PlainPassword -AsPlainText -Force
$BSTR = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($SecurePassword)
$UnsecurePassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)
First You need to verify the base, small and thumbnail image are selected in Magento admin.
admin->catalog->manage product->product->image
Then select your image roles(base,small,thumbnail)
Then you call the image using
echo $this->helper('catalog/image')->init($_product, 'small_image')->resize(163, 100);
Hope this helps you.
I think you can also call Refresh()
.
After my initial research i found that when we close a browser, the browser will close all the tabs one by one to completely close the browser. Hence, i observed that there will be very little time delay between closing the tabs. So I taken this time delay as my main validation point and able to achieve the browser and tab close event detection.
//Detect Browser or Tab Close Events
$(window).on('beforeunload',function(e) {
e = e || window.event;
var localStorageTime = localStorage.getItem('storagetime')
if(localStorageTime!=null && localStorageTime!=undefined){
var currentTime = new Date().getTime(),
timeDifference = currentTime - localStorageTime;
if(timeDifference<25){//Browser Closed
localStorage.removeItem('storagetime');
}else{//Browser Tab Closed
localStorage.setItem('storagetime',new Date().getTime());
}
}else{
localStorage.setItem('storagetime',new Date().getTime());
}
});
The issue here is that you've opened a file and read its contents so the cursor is at the end of the file. By writing to the same file handle, you're essentially appending to the file.
The easiest solution would be to close the file after you've read it in, then reopen it for writing.
with open("replayScript.json", "r") as jsonFile:
data = json.load(jsonFile)
data["location"] = "NewPath"
with open("replayScript.json", "w") as jsonFile:
json.dump(data, jsonFile)
Alternatively, you can use seek()
to move the cursor back to the beginning of the file then start writing, followed by a truncate()
to deal with the case where the new data is smaller than the previous.
with open("replayScript.json", "r+") as jsonFile:
data = json.load(jsonFile)
data["location"] = "NewPath"
jsonFile.seek(0) # rewind
json.dump(data, jsonFile)
jsonFile.truncate()
Here you go. this should work.
questionFrame.frame = CGRectMake(0 , 0, self.view.frame.width, self.view.frame.height * 0.7)
answerFrame.frame = CGRectMake(0 , self.view.frame.height * 0.7, self.view.frame.width, self.view.frame.height * 0.3)
For MACOS users
if you see credentials failed but you are sure that is is working previously then:
probably you made a software update to the system. System uses git bundled with xcode. its better to open Xcode and click install extra components on startup of xcode. it will say installing components. when you accept the license agreement if will start working again.
in short:
open Xcode, install additional ompoenents. accept user licence agreement
I needed to generate mongodb ids on client side.
After digging into the mongodb source code i found they generate ObjectIDs using npm bson
lib.
If ever you need only to generate an ObjectID without installing the whole mongodb / mongoose package, you can import the lighter bson
library :
const bson = require('bson');
new bson.ObjectId(); // 5cabe64dcf0d4447fa60f5e2
Note: There is also an npm project named bson-objectid
being even lighter
On Windows 10, you can enable Ctrl + C and Ctrl + V to work in the command prompt:
I works for me as i get milliseconds=1592380675409 using javascript method getTime() which returns the number of milliseconds between midnight of January 1, 1970 and the specified date.
var d = new Date();//Wed Jun 17 2020 13:27:55 GMT+0530 (India Standard Time)
var n = d.getTime();//1592380675409 this value is store somewhere
//function call
console.log(convertMillisecToHrMinSec(1592380675409));
var convertMillisecToHrMinSec = (time) => {
let date = new Date(time);
let hr = date.getHours();
let min = date.getMinutes();
let sec = date.getSeconds();
hr = (hr < 10) ? "0"+ hr : hr;
min = (min < 10) ? "0"+ min : min;
sec = (sec < 10) ? "0"+ sec : sec;
return hr + ':' + min + ":" + sec;//01:27:55
}
Dim fileEntries As String() = Directory.GetFiles("YourPath", "*.txt")
' Process the list of .txt files found in the directory. '
Dim fileName As String
For Each fileName In fileEntries
If (System.IO.File.Exists(fileName)) Then
'Read File and Print Result if its true
ReadFile(fileName)
End If
TransfereFile(fileName, 1)
Next
I would like to suggest simppl as an option for consideration. It is a module that is available via pypi: pip install simppl
and was runs on python3.
simppl
allows the user to run shell commands and read the output from the screen.
The developers suggest three types of use cases:
- The simplest usage will look like this:
from simppl.simple_pipeline import SimplePipeline sp = SimplePipeline(start=0, end=100): sp.print_and_run('<YOUR_FIRST_OS_COMMAND>') sp.print_and_run('<YOUR_SECOND_OS_COMMAND>') ```
- To run multiple commands concurrently use:
commands = ['<YOUR_FIRST_OS_COMMAND>', '<YOUR_SECOND_OS_COMMAND>'] max_number_of_processes = 4 sp.run_parallel(commands, max_number_of_processes) ```
- Finally, if your project uses the cli module, you can run directly another command_line_tool as part of a pipeline. The other tool will be run from the same process, but it will appear from the logs as another command in the pipeline. This enables smoother debugging and refactoring of tools calling other tools.
from example_module import example_tool sp.print_and_run_clt(example_tool.run, ['first_number', 'second_nmber'], {'-key1': 'val1', '-key2': 'val2'}, {'--flag'}) ```
Note that the printing to STDOUT/STDERR is via python's logging
module.
Here is a complete code to show how simppl works:
import logging
from logging.config import dictConfig
logging_config = dict(
version = 1,
formatters = {
'f': {'format':
'%(asctime)s %(name)-12s %(levelname)-8s %(message)s'}
},
handlers = {
'h': {'class': 'logging.StreamHandler',
'formatter': 'f',
'level': logging.DEBUG}
},
root = {
'handlers': ['h'],
'level': logging.DEBUG,
},
)
dictConfig(logging_config)
from simppl.simple_pipeline import SimplePipeline
sp = SimplePipeline(0, 100)
sp.print_and_run('ls')
(Updated 2018-03-17)
The problem, as you've spotted, is that String.Contains
does not perform a word-boundary check, so Contains("float")
will return true
for both "foo float bar" (correct) and "unfloating" (which is incorrect).
The solution is to ensure that "float" (or whatever your desired class-name is) appears alongside a word-boundary at both ends. A word-boundary is either the start (or end) of a string (or line), whitespace, certain punctuation, etc. In most regular-expressions this is \b
. So the regex you want is simply: \bfloat\b
.
A downside to using a Regex
instance is that they can be slow to run if you don't use the .Compiled
option - and they can be slow to compile. So you should cache the regex instance. This is more difficult if the class-name you're looking for changes at runtime.
Alternatively you can search a string for words by word-boundaries without using a regex by implementing the regex as a C# string-processing function, being careful not to cause any new string or other object allocation (e.g. not using String.Split
).
Suppose you just want to look for elements with a single, design-time specified class-name:
class Program {
private static readonly Regex _classNameRegex = new Regex( @"\bfloat\b", RegexOptions.Compiled );
private static IEnumerable<HtmlNode> GetFloatElements(HtmlDocument doc) {
return doc
.Descendants()
.Where( n => n.NodeType == NodeType.Element )
.Where( e => e.Name == "div" && _classNameRegex.IsMatch( e.GetAttributeValue("class", "") ) );
}
}
If you need to choose a single class-name at runtime then you can build a regex:
private static IEnumerable<HtmlNode> GetElementsWithClass(HtmlDocument doc, String className) {
Regex regex = new Regex( "\\b" + Regex.Escape( className ) + "\\b", RegexOptions.Compiled );
return doc
.Descendants()
.Where( n => n.NodeType == NodeType.Element )
.Where( e => e.Name == "div" && regex.IsMatch( e.GetAttributeValue("class", "") ) );
}
If you have multiple class-names and you want to match all of them, you could create an array of Regex
objects and ensure they're all matching, or combine them into a single Regex
using lookarounds, but this results in horrendously complicated expressions - so using a Regex[]
is probably better:
using System.Linq;
private static IEnumerable<HtmlNode> GetElementsWithClass(HtmlDocument doc, String[] classNames) {
Regex[] exprs = new Regex[ classNames.Length ];
for( Int32 i = 0; i < exprs.Length; i++ ) {
exprs[i] = new Regex( "\\b" + Regex.Escape( classNames[i] ) + "\\b", RegexOptions.Compiled );
}
return doc
.Descendants()
.Where( n => n.NodeType == NodeType.Element )
.Where( e =>
e.Name == "div" &&
exprs.All( r =>
r.IsMatch( e.GetAttributeValue("class", "") )
)
);
}
The advantage of using a custom C# method to do string matching instead of a regex is hypothetically faster performance and reduced memory usage (though Regex
may be faster in some circumstances - always profile your code first, kids!)
This method below: CheapClassListContains
provides a fast word-boundary-checking string matching function that can be used the same way as regex.IsMatch
:
private static IEnumerable<HtmlNode> GetElementsWithClass(HtmlDocument doc, String className) {
return doc
.Descendants()
.Where( n => n.NodeType == NodeType.Element )
.Where( e =>
e.Name == "div" &&
CheapClassListContains(
e.GetAttributeValue("class", ""),
className,
StringComparison.Ordinal
)
);
}
/// <summary>Performs optionally-whitespace-padded string search without new string allocations.</summary>
/// <remarks>A regex might also work, but constructing a new regex every time this method is called would be expensive.</remarks>
private static Boolean CheapClassListContains(String haystack, String needle, StringComparison comparison)
{
if( String.Equals( haystack, needle, comparison ) ) return true;
Int32 idx = 0;
while( idx + needle.Length <= haystack.Length )
{
idx = haystack.IndexOf( needle, idx, comparison );
if( idx == -1 ) return false;
Int32 end = idx + needle.Length;
// Needle must be enclosed in whitespace or be at the start/end of string
Boolean validStart = idx == 0 || Char.IsWhiteSpace( haystack[idx - 1] );
Boolean validEnd = end == haystack.Length || Char.IsWhiteSpace( haystack[end] );
if( validStart && validEnd ) return true;
idx++;
}
return false;
}
HtmlAgilityPack is somewhat stagnated doesn't support .querySelector
and .querySelectorAll
, but there are third-party libraries that extend HtmlAgilityPack with it: namely Fizzler and CssSelectors. Both Fizzler and CssSelectors implement QuerySelectorAll
, so you can use it like so:
private static IEnumerable<HtmlNode> GetDivElementsWithFloatClass(HtmlDocument doc) {
return doc.QuerySelectorAll( "div.float" );
}
With runtime-defined classes:
private static IEnumerable<HtmlNode> GetDivElementsWithClasses(HtmlDocument doc, IEnumerable<String> classNames) {
String selector = "div." + String.Join( ".", classNames );
return doc.QuerySelectorAll( selector );
}
You just remove id
out of beans inside <list>
tag. Like this:
<property name="listStaff">
<list>
<bean class="com.test.entity.Staff">
<constructor-arg name="name" value = "Jonh"/>
<constructor-arg name="age" value = "30"/>
</bean>
<bean class="com.test.entity.Staff">
<constructor-arg name="name" value = "Jam"/>
<constructor-arg name="age" value = "21"/>
</bean>
</list>
</property>
Procedural elements like loops are not part of the SQL language and can only be used inside the body of a procedural language function, procedure (Postgres 11 or later) or a DO
statement, where such additional elements are defined by the respective procedural language. The default is PL/pgSQL, but there are others.
Example with plpgsql:
DO
$do$
BEGIN
FOR i IN 1..25 LOOP
INSERT INTO playtime.meta_random_sample
(col_i, col_id) -- declare target columns!
SELECT i, id
FROM tbl
ORDER BY random()
LIMIT 15000;
END LOOP;
END
$do$;
For many tasks that can be solved with a loop, there is a shorter and faster set-based solution around the corner. Pure SQL equivalent for your example:
INSERT INTO playtime.meta_random_sample (col_i, col_id)
SELECT t.*
FROM generate_series(1,25) i
CROSS JOIN LATERAL (
SELECT i, id
FROM tbl
ORDER BY random()
LIMIT 15000
) t;
About generate_series()
:
About optimizing performance of random selections:
For anyone who comes across this in the future, I want to share this gem from the PHP docs, posted by an anonymous user:
There seems to be some confusion here. The distinction between pointers and references is not particularly helpful. The behavior in some of the "comprehensive" examples already posted can be explained in simpler unifying terms. Hayley's code, for example, is doing EXACTLY what you should expect it should. (Using >= 5.3)
First principle: A pointer stores a memory address to access an object. Any time an object is assigned, a pointer is generated. (I haven't delved TOO deeply into the Zend engine yet, but as far as I can see, this applies)
2nd principle, and source of the most confusion: Passing a variable to a function is done by default as a value pass, ie, you are working with a copy. "But objects are passed by reference!" A common misconception both here and in the Java world. I never said a copy OF WHAT. The default passing is done by value. Always. WHAT is being copied and passed, however, is the pointer. When using the "->", you will of course be accessing the same internals as the original variable in the caller function. Just using "=" will only play with copies.
3rd principle: "&" automatically and permanently sets another variable name/pointer to the same memory address as something else until you decouple them. It is correct to use the term "alias" here. Think of it as joining two pointers at the hip until forcibly separated with "unset()". This functionality exists both in the same scope and when an argument is passed to a function. Often the passed argument is called a "reference," due to certain distinctions between "passing by value" and "passing by reference" that were clearer in C and C++.
Just remember: pointers to objects, not objects themselves, are passed to functions. These pointers are COPIES of the original unless you use "&" in your parameter list to actually pass the originals. Only when you dig into the internals of an object will the originals change.
And here's the example they provide:
<?php
//The two are meant to be the same
$a = "Clark Kent"; //a==Clark Kent
$b = &$a; //The two will now share the same fate.
$b="Superman"; // $a=="Superman" too.
echo $a;
echo $a="Clark Kent"; // $b=="Clark Kent" too.
unset($b); // $b divorced from $a
$b="Bizarro";
echo $a; // $a=="Clark Kent" still, since $b is a free agent pointer now.
//The two are NOT meant to be the same.
$c="King";
$d="Pretender to the Throne";
echo $c."\n"; // $c=="King"
echo $d."\n"; // $d=="Pretender to the Throne"
swapByValue($c, $d);
echo $c."\n"; // $c=="King"
echo $d."\n"; // $d=="Pretender to the Throne"
swapByRef($c, $d);
echo $c."\n"; // $c=="Pretender to the Throne"
echo $d."\n"; // $d=="King"
function swapByValue($x, $y){
$temp=$x;
$x=$y;
$y=$temp;
//All this beautiful work will disappear
//because it was done on COPIES of pointers.
//The originals pointers still point as they did.
}
function swapByRef(&$x, &$y){
$temp=$x;
$x=$y;
$y=$temp;
//Note the parameter list: now we switched 'em REAL good.
}
?>
I wrote an extensive, detailed blog post on this subject for JavaScript, but I believe it applies equally well to PHP, C++, and any other language where people seem to be confused about pass by value vs. pass by reference.
Clearly, PHP, like C++, is a language that does support pass by reference. By default, objects are passed by value. When working with variables that store objects, it helps to see those variables as pointers (because that is fundamentally what they are, at the assembly level). If you pass a pointer by value, you can still "trace" the pointer and modify the properties of the object being pointed to. What you cannot do is have it point to a different object. Only if you explicitly declare a parameter as being passed by reference will you be able to do that.
In general, to make sure something happens no matter what, you use
from exceptions import NameError
try:
f = open(x)
except ErrorType as e:
pass # handle the error
finally:
try:
f.close()
except NameError: pass
finally
blocks will be run whether or not there is an error in the try
block, and whether or not there is an error in any error handling that takes place in except
blocks. If you don't handle an exception that is raised, it will still be raised after the finally
block is excecuted.
The general way to make sure a file is closed is to use a "context manager".
http://docs.python.org/reference/datamodel.html#context-managers
with open(x) as f:
# do stuff
This will automatically close f
.
For your question #2, bar
gets closed on immediately when it's reference count reaches zero, so on del foo
if there are no other references.
Objects are NOT created by __init__
, they're created by __new__
.
http://docs.python.org/reference/datamodel.html#object.new
When you do foo = Foo()
two things are actually happening, first a new object is being created, __new__
, then it is being initialized, __init__
. So there is no way you could possibly call del foo
before both those steps have taken place. However, if there is an error in __init__
, __del__
will still be called because the object was actually already created in __new__
.
Edit: Corrected when deletion happens if a reference count decreases to zero.
if num in range(min, max):
"""do stuff..."""
else:
"""do other stuff..."""
mgnoonan,
You can do this to return a FileStream:
/// <summary>
/// Creates a new Excel spreadsheet based on a template using the NPOI library.
/// The template is changed in memory and a copy of it is sent to
/// the user computer through a file stream.
/// </summary>
/// <returns>Excel report</returns>
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult NPOICreate()
{
try
{
// Opening the Excel template...
FileStream fs =
new FileStream(Server.MapPath(@"\Content\NPOITemplate.xls"), FileMode.Open, FileAccess.Read);
// Getting the complete workbook...
HSSFWorkbook templateWorkbook = new HSSFWorkbook(fs, true);
// Getting the worksheet by its name...
HSSFSheet sheet = templateWorkbook.GetSheet("Sheet1");
// Getting the row... 0 is the first row.
HSSFRow dataRow = sheet.GetRow(4);
// Setting the value 77 at row 5 column 1
dataRow.GetCell(0).SetCellValue(77);
// Forcing formula recalculation...
sheet.ForceFormulaRecalculation = true;
MemoryStream ms = new MemoryStream();
// Writing the workbook content to the FileStream...
templateWorkbook.Write(ms);
TempData["Message"] = "Excel report created successfully!";
// Sending the server processed data back to the user computer...
return File(ms.ToArray(), "application/vnd.ms-excel", "NPOINewFile.xls");
}
catch(Exception ex)
{
TempData["Message"] = "Oops! Something went wrong.";
return RedirectToAction("NPOI");
}
}
For those of us trying to figure out how to hash our own classes whilst still using the standard template, there is a simple solution:
In your class you need to define an equality operator overload ==
. If you don't know how to do this, GeeksforGeeks has a great tutorial https://www.geeksforgeeks.org/operator-overloading-c/
Under the standard namespace, declare a template struct called hash with your classname as the type (see below). I found a great blogpost that also shows an example of calculating hashes using XOR and bitshifting, but that's outside the scope of this question, but it also includes detailed instructions on how to accomplish using hash functions as well https://prateekvjoshi.com/2014/06/05/using-hash-function-in-c-for-user-defined-classes/
namespace std {
template<>
struct hash<my_type> {
size_t operator()(const my_type& k) {
// Do your hash function here
...
}
};
}
std::map
or std::unordered_map
just like you would normally do and use my_type
as the key, the standard library will automatically use the hash function you defined before (in step 2) to hash your keys.#include <unordered_map>
int main() {
std::unordered_map<my_type, other_type> my_map;
}
The ability to read an NFC tag has been added to iOS 11 which only support iPhone 7 and 7 plus
As a test drive I made this repo
First: We need to initiate NFCNDEFReaderSession class
var session: NFCNDEFReaderSession?
session = NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: false)
Then we need to start the session by:
session?.begin()
and when done:
session?.invalidate()
The delegate (which self should implement) has basically two functions:
func readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage])
func readerSession(_ session: NFCNDEFReaderSession, didInvalidateWithError error: Error)
here is my reference Apple docs
My solution hides keyboard on outside click in any activity, with of all edit texts. Without specifying them one by one.
First add to root view of layout xml: android:clickable="true" android:focusableInTouchMode="true"
Next, create one parent Acitvity of all activities you want to hide keyboard, and specify onResume() method:
@Override
protected void onResume() {
super.onResume();
//getting Root View that gets focus
View rootView =((ViewGroup)findViewById(android.R.id.content)).
getChildAt(0);
rootView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
hideKeyboard(AbstractActivity.this);
}
}
});
}
Extend your activity with this General activity (Inheritance power !) and that's all, every time any EditText (on any extended Activity) will lose focus, keyboard will be hidden.
P.S. hideKeyboard method :
public static void hideKeyboard(Activity context) {
InputMethodManager inputMethodManager = (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow( context.getCurrentFocus().getWindowToken(), 0);
}
context.getCurrentFocus() doesn't need specifying specific EditText view..
Here is a more minimal method without any dependencies or libraries.
It requires the new fetch API. (Can I use it?)
var url = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="
fetch(url)
.then(res => res.blob())
.then(console.log)
_x000D_
With this method you can also easily get a ReadableStream, ArrayBuffer, text, and JSON.
(fyi this also works with node-fetch in Node)
As a function:
const b64toBlob = (base64, type = 'application/octet-stream') =>
fetch(`data:${type};base64,${base64}`).then(res => res.blob())
I did a simple performance test towards Jeremy's ES6 sync version.
The sync version will block UI for a while.
keeping the devtool open can slow the fetch performance
document.body.innerHTML += '<input autofocus placeholder="try writing">'
// get some dummy gradient image
var img=function(){var a=document.createElement("canvas"),b=a.getContext("2d"),c=b.createLinearGradient(0,0,1500,1500);a.width=a.height=3000;c.addColorStop(0,"red");c.addColorStop(1,"blue");b.fillStyle=c;b.fillRect(0,0,a.width,a.height);return a.toDataURL()}();
async function perf() {
const blob = await fetch(img).then(res => res.blob())
// turn it to a dataURI
const url = img
const b64Data = url.split(',')[1]
// Jeremy Banks solution
const b64toBlob = (b64Data, contentType = '', sliceSize=512) => {
const byteCharacters = atob(b64Data);
const byteArrays = [];
for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
const slice = byteCharacters.slice(offset, offset + sliceSize);
const byteNumbers = new Array(slice.length);
for (let i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
const byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
const blob = new Blob(byteArrays, {type: contentType});
return blob;
}
// bench blocking method
let i = 500
console.time('blocking b64')
while (i--) {
await b64toBlob(b64Data)
}
console.timeEnd('blocking b64')
// bench non blocking
i = 500
// so that the function is not reconstructed each time
const toBlob = res => res.blob()
console.time('fetch')
while (i--) {
await fetch(url).then(toBlob)
}
console.timeEnd('fetch')
console.log('done')
}
perf()
_x000D_
Ansible uses YAML syntax in its playbooks. YAML has a number of block operators:
The >
is a folding block operator. That is, it joins multiple lines together by spaces. The following syntax:
key: >
This text
has multiple
lines
Would assign the value This text has multiple lines\n
to key
.
The |
character is a literal block operator. This is probably what you want for multi-line shell scripts. The following syntax:
key: |
This text
has multiple
lines
Would assign the value This text\nhas multiple\nlines\n
to key
.
You can use this for multiline shell scripts like this:
- name: iterate user groups
shell: |
groupmod -o -g {{ item['guid'] }} {{ item['username'] }}
do_some_stuff_here
and_some_other_stuff
with_items: "{{ users }}"
There is one caveat: Ansible does some janky manipulation of arguments to the shell
command, so while the above will generally work as expected, the following won't:
- shell: |
cat <<EOF
This is a test.
EOF
Ansible will actually render that text with leading spaces, which means the shell will never find the string EOF
at the beginning of a line. You can avoid Ansible's unhelpful heuristics by using the cmd
parameter like this:
- shell:
cmd: |
cat <<EOF
This is a test.
EOF
It can happen if the JDK version is different.
try this with maven:
<properties>
<jdk.version>1.8</jdk.version>
</properties>
under build->plugins:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>${jdk.version}</source>
<target>${jdk.version}</target>
</configuration>
</plugin>
I solved this problem by first verifying the that remote did not have anything checked out (it really was not supposed to), and then made it bare with:
$ git config --bool core.bare true
After that git push worked fine.
Here is another simple way of doing this, by adding width 20% to every col-xs-2:
<div class="col-xs-12">
<div class="col-xs-2" style="width:20%;" id="p1">One</div>
<div class="col-xs-2" style="width:20%;" id="p2">Two</div>
<div class="col-xs-2" style="width:20%;" id="p3">Three</div>
<div class="col-xs-2" style="width:20%;" id="p4">Four</div>
<div class="col-xs-2" style="width:20%;" id="p5">Five</div>
</div>
I wrote a class for that too. http://blog.another-d-mention.ro/programming/read-load-files-from-zip-in-javascript/ You can load basic assets such as javascript/css/images directly from the zip using class methods. Hope it helps
Or, just add your binary path into the PATH. At the end of the bashrc:
...
export PATH=$PATH:/home/user/.local/bin/
save the file and run:
source .bashrc
and the command will work.
if you have a list a and then following statements
list<int>::iterator it; // declare an iterator
list<int>::const_iterator cit; // declare an const iterator
it=a.begin();
cit=a.begin();
you can change the contents of the element in the list using “it” but not “cit”, that is you can use “cit” for reading the contents not for updating the elements.
*it=*it+1;//returns no error
*cit=*cit+1;//this will return error
sudo apt-get install docker # DO NOT do this
is a different library on ubuntu.
Use sudo apt-get install docker-ce
to install the correct docker.
For linux users, and to sum up and add to what others have said here, you should know the following:
Global variables are not evil. $CLASSPATH is specifically what Java uses to look through multiple directories to find all the different classes it needs for your script (unless you explicitly tell it otherwise with the -cp override).
The colon (":") character separates the different directories. There is only one $CLASSPATH and it has all the directories in it. So, when you run "export CLASSPATH=...." you want to include the current value "$CLASSPATH" in order to append to it. For example:
export CLASSPATH=.
export CLASSPATH=$CLASSPATH:/usr/share/java/mysql-connector-java-5.1.12.jar
In the first line above, you start CLASSPATH out with just a simple 'dot' which is the path to your current working directory. With that, whenever you run java it will look in the current working directory (the one you're in) for classes. In the second line above, $CLASSPATH grabs the value that you previously entered (.) and appends the path to a mysql dirver. Now, java will look for the driver AND for your classes.
echo $CLASSPATH
is super handy, and what it returns should read like a colon-separated list of all the directories you want java looking in for what it needs to run your script.
Tomcat does not use CLASSPATH. Read what to do about that here: https://tomcat.apache.org/tomcat-8.0-doc/class-loader-howto.html
Simply parsing the JSON and comparing the two objects is not enough because it wouldn't be the exact same object references (but might be the same values).
You need to do a deep equals.
From http://threebit.net/mail-archive/rails-spinoffs/msg06156.html - which seems the use jQuery.
Object.extend(Object, {
deepEquals: function(o1, o2) {
var k1 = Object.keys(o1).sort();
var k2 = Object.keys(o2).sort();
if (k1.length != k2.length) return false;
return k1.zip(k2, function(keyPair) {
if(typeof o1[keyPair[0]] == typeof o2[keyPair[1]] == "object"){
return deepEquals(o1[keyPair[0]], o2[keyPair[1]])
} else {
return o1[keyPair[0]] == o2[keyPair[1]];
}
}).all();
}
});
Usage:
var anObj = JSON.parse(jsonString1);
var anotherObj= JSON.parse(jsonString2);
if (Object.deepEquals(anObj, anotherObj))
...
Use +
for string concatenation as:
section = 'C_type'
new_section = 'Sec_' + section
another alternative is to use a form replacement script/library. They usually hide the original element and replace them with a div or span, which you can style in whatever way you like.
Examples are:
http://customformelements.net (based on mootools) http://www.htmldrive.net/items/show/481/jQuery-UI-Radiobutton-und-Checkbox-Replacement.html
I find that num * 1
is simple, clear, and works for integers and floats...
https://pypi.org/project/Pillow/
pip install Pillow
If you have both Pythons installed and want to install this for Python3:
python3 -m pip install Pillow
function extractSummary(iCalContent) {
var rx = /\nSUMMARY:(.*)\n/g;
var arr = rx.exec(iCalContent);
return arr[1];
}
You need these changes:
Put the *
inside the parenthesis as
suggested above. Otherwise your matching
group will contain only one
character.
Get rid of the ^
and $
. With the global option they match on start and end of the full string, rather than on start and end of lines. Match on explicit newlines instead.
I suppose you want the matching group (what's
inside the parenthesis) rather than
the full array? arr[0]
is
the full match ("\nSUMMARY:..."
) and
the next indexes contain the group
matches.
String.match(regexp) is supposed to return an array with the matches. In my browser it doesn't (Safari on Mac returns only the full match, not the groups), but Regexp.exec(string) works.
I first tried the -clean option, but that didn't solve the problem.
Then I added the -data option with the correct path to the workspace.
That solved the problem for me.
this is my simple implementation for ASYNC requests with jQuery. I hope this help anyone.
var queueUrlsForRemove = [
'http://dev-myurl.com/image/1',
'http://dev-myurl.com/image/2',
'http://dev-myurl.com/image/3',
];
var queueImagesDelete = function(){
deleteImage( queueUrlsForRemove.splice(0,1), function(){
if (queueUrlsForRemove.length > 0) {
queueImagesDelete();
}
});
}
var deleteImage = function(url, callback) {
$.ajax({
url: url,
method: 'DELETE'
}).done(function(response){
typeof(callback) == 'function' ? callback(response) : null;
});
}
queueImagesDelete();
Try
import pandas as pd
pd.read_csv("../data_folder/data.csv")
At the moment there are three realy powerfull cmd.exe alternatives:
cmder is an enhancement off ConEmu and Clink
All have features like Copy & Paste, Window Resize per Mouse, Splitscreen, Tabs and a lot of other usefull features.
Try writing all the errors to a file.
error_reporting(-1); // reports all errors
ini_set("display_errors", "1"); // shows all errors
ini_set("log_errors", 1);
ini_set("error_log", "/tmp/php-error.log");
Something like that.
In CSS3, there is now a native way to do this, without any of the hacks suggested in the existing answers: the caret-color
property.
There are a lot of things you can do to with the caret, as seen below. It can even be animated.
/* Keyword value */
caret-color: auto;
color: transparent;
color: currentColor;
/* <color> values */
caret-color: red;
caret-color: #5729e9;
caret-color: rgb(0, 200, 0);
caret-color: hsla(228, 4%, 24%, 0.8);
The caret-color
property is supported from Firefox 55, and Chrome 60. Support is also available in the Safari Technical Preview and in Opera (but not yet in Edge). You can view the current support tables here.
I have found that if the view model contains many div bindings the best way to clear the ko.applyBindings(new someModelView);
is to use: ko.cleanNode($("body")[0]);
This allows you to call a new ko.applyBindings(new someModelView2);
dynamically without the worry of the previous view model still being binded.
The relevant documentation on Apple's site, Specifying a Webpage Icon for Web Clip.
There is no need to put anything in the head of your document. If no icons are specified using a link element, the website root directory is searched for icons with the apple-touch-icon or apple-touch-icon-precomposed prefix.
For example, if the appropriate icon size for the device is 57 x 57, the system searches for filenames in the following order:
Passing arguments by bundle is restricted to some data types. But you can transfer any data to your fragment this way:
In your fragment create a public method like this
public void passData(Context context, List<LexItem> list, int pos) {
mContext = context;
mLexItemList = list;
mIndex = pos;
}
and in your activity call passData() with all your needed data types after instantiating the fragment
WebViewFragment myFragment = new WebViewFragment();
myFragment.passData(getApplicationContext(), mLexItemList, index);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.add(R.id.my_fragment_container, myFragment);
ft.addToBackStack(null);
ft.commit();
Remark: My fragment extends "android.support.v4.app.Fragment", therefore I have to use "getSupportFragmentManager()". Of course, this principle will work also with a fragment class extending "Fragment", but then you have to use "getFragmentManager()".
R treats backslashes as escape values for character constants. (... and so do regular expressions. Hence the need for two backslashes when supplying a character argument for a pattern. The first one isn't actually a character, but rather it makes the second one into a character.) You can see how they are processed using cat
.
y <- "double quote: \", tab: \t, newline: \n, unicode point: \u20AC"
print(y)
## [1] "double quote: \", tab: \t, newline: \n, unicode point: €"
cat(y)
## double quote: ", tab: , newline:
## , unicode point: €
Further reading: Escaping a backslash with a backslash in R produces 2 backslashes in a string, not 1
To use special characters in a regular expression the simplest method is usually to escape them with a backslash, but as noted above, the backslash itself needs to be escaped.
grepl("\\[", "a[b")
## [1] TRUE
To match backslashes, you need to double escape, resulting in four backslashes.
grepl("\\\\", c("a\\b", "a\nb"))
## [1] TRUE FALSE
The rebus
package contains constants for each of the special characters to save you mistyping slashes.
library(rebus)
OPEN_BRACKET
## [1] "\\["
BACKSLASH
## [1] "\\\\"
For more examples see:
?SpecialCharacters
Your problem can be solved this way:
library(rebus)
grepl(OPEN_BRACKET, "a[b")
You can also wrap the special characters in square brackets to form a character class.
grepl("[?]", "a?b")
## [1] TRUE
Two of the special characters have special meaning inside character classes: \
and ^
.
Backslash still needs to be escaped even if it is inside a character class.
grepl("[\\\\]", c("a\\b", "a\nb"))
## [1] TRUE FALSE
Caret only needs to be escaped if it is directly after the opening square bracket.
grepl("[ ^]", "a^b") # matches spaces as well.
## [1] TRUE
grepl("[\\^]", "a^b")
## [1] TRUE
rebus
also lets you form a character class.
char_class("?")
## <regex> [?]
If you want to match all punctuation, you can use the [:punct:]
character class.
grepl("[[:punct:]]", c("//", "[", "(", "{", "?", "^", "$"))
## [1] TRUE TRUE TRUE TRUE TRUE TRUE TRUE
stringi
maps this to the Unicode General Category for punctuation, so its behaviour is slightly different.
stri_detect_regex(c("//", "[", "(", "{", "?", "^", "$"), "[[:punct:]]")
## [1] TRUE TRUE TRUE TRUE TRUE FALSE FALSE
You can also use the cross-platform syntax for accessing a UGC.
stri_detect_regex(c("//", "[", "(", "{", "?", "^", "$"), "\\p{P}")
## [1] TRUE TRUE TRUE TRUE TRUE FALSE FALSE
Placing characters between \\Q
and \\E
makes the regular expression engine treat them literally rather than as regular expressions.
grepl("\\Q.\\E", "a.b")
## [1] TRUE
rebus
lets you write literal blocks of regular expressions.
literal(".")
## <regex> \Q.\E
Regular expressions are not always the answer. If you want to match a fixed string then you can do, for example:
grepl("[", "a[b", fixed = TRUE)
stringr::str_detect("a[b", fixed("["))
stringi::stri_detect_fixed("a[b", "[")
You can make the single letter optional by adding a ?
after it as:
([A-Z]{1}?)
The quantifier {1}
is redundant so you can drop it.
Here a CSS animation fork of jezzipin's Solution, to seperate code from styling.
JS:
$(window).on("scroll touchmove", function () {
$('#header_nav').toggleClass('tiny', $(document).scrollTop() > 0);
});
CSS:
.header {
width:100%;
height:100px;
background: #26b;
color: #fff;
position:fixed;
top:0;
left:0;
transition: height 500ms, background 500ms;
}
.header.tiny {
height:40px;
background: #aaa;
}
http://jsfiddle.net/sinky/S8Fnq/
On scroll/touchmove the css class "tiny" is set to "#header_nav" if "$(document).scrollTop()" is greater than 0.
CSS transition attribute animates the "height" and "background" attribute nicely.
Because your question is phrased regarding your error message and not whatever your function is trying to accomplish, I will address the error.
-
is the 'binary operator' your error is referencing, and either CurrentDay
or MA
(or both) are non-numeric.
A binary operation is a calculation that takes two values (operands) and produces another value (see wikipedia for more). +
is one such operator: "1 + 1" takes two operands (1 and 1) and produces another value (2). Note that the produced value isn't necessarily different from the operands (e.g., 1 + 0 = 1).
R only knows how to apply +
(and other binary operators, such as -
) to numeric arguments:
> 1 + 1
[1] 2
> 1 + 'one'
Error in 1 + "one" : non-numeric argument to binary operator
When you see that error message, it means that you are (or the function you're calling is) trying to perform a binary operation with something that isn't a number.
EDIT:
Your error lies in the use of [
instead of [[
. Because Day
is a list, subsetting with [
will return a list, not a numeric vector. [[
, however, returns an object of the class of the item contained in the list:
> Day <- Transaction(1, 2)["b"]
> class(Day)
[1] "list"
> Day + 1
Error in Day + 1 : non-numeric argument to binary operator
> Day2 <- Transaction(1, 2)[["b"]]
> class(Day2)
[1] "numeric"
> Day2 + 1
[1] 3
Transaction
, as you've defined it, returns a list of two vectors. Above, Day
is a list contain one vector. Day2
, however, is simply a vector.
This error means that, while linking, compiler is not able to find the definition of main()
function anywhere.
In your makefile, the main
rule will expand to something like this.
main: producer.o consumer.o AddRemove.o
gcc -pthread -Wall -o producer.o consumer.o AddRemove.o
As per the gcc
manual page, the use of -o
switch is as below
-o file Place output in file file. This applies regardless to whatever sort of output is being produced, whether it be an executable file, an object file, an assembler file or preprocessed C code. If
-o
is not specified, the default is to put an executable file ina.out
.
It means, gcc will put the output in the filename provided immediate next to -o
switch. So, here instead of linking all the .o
files together and creating the binary [main
, in your case], its creating the binary as producer.o
, linking the other .o
files. Please correct that.
Convert Map
to an array using Array.from
, sort array, convert back to Map
, e.g.
new Map(
Array
.from(eventsByDate)
.sort((a, b) => {
// a[0], b[0] is the key of the map
return a[0] - b[0];
})
)
If you're looking for something as nice as Python's x[-1] notation, I think you're out of luck. The standard idiom is
x[length(x)]
but it's easy enough to write a function to do this:
last <- function(x) { return( x[length(x)] ) }
This missing feature in R annoys me too!
Subsetting the data and combining them back is unnecessary. So are loops since those operations are vectorized. From your previous edit, I'm guessing you are doing all of this to make bubble plots. If that is correct, perhaps the example below will help you. If this is way off, I can just delete the answer.
library(ggplot2)
# let's look at the included dataset named trees.
# ?trees for a description
data(trees)
ggplot(trees,aes(Height,Volume)) + geom_point(aes(size=Girth))
# Great, now how do we color the bubbles by groups?
# For this example, I'll divide Volume into three groups: lo, med, high
trees$set[trees$Volume<=22.7]="lo"
trees$set[trees$Volume>22.7 & trees$Volume<=45.4]="med"
trees$set[trees$Volume>45.4]="high"
ggplot(trees,aes(Height,Volume,colour=set)) + geom_point(aes(size=Girth))
# Instead of just circles scaled by Girth, let's also change the symbol
ggplot(trees,aes(Height,Volume,colour=set)) + geom_point(aes(size=Girth,pch=set))
# Now let's choose a specific symbol for each set. Full list of symbols at ?pch
trees$symbol[trees$Volume<=22.7]=1
trees$symbol[trees$Volume>22.7 & trees$Volume<=45.4]=2
trees$symbol[trees$Volume>45.4]=3
ggplot(trees,aes(Height,Volume,colour=set)) + geom_point(aes(size=Girth,pch=symbol))
There are valid reasons people may wish to do this in JavaScript instead of CSS.
To truncate to 8 characters (including ellipsis) in JavaScript:
short = long.replace(/(.{7})..+/, "$1…");
or
short = long.replace(/(.{7})..+/, "$1…");
In curl version 7.22.0 on Ubuntu and 7.24.0 on OSX the solution to not show progress but to show errors is to use both -s
(--silent
) and -S
(--show-error
) like so:
curl -sS http://google.com > temp.html
This works for both redirected output > /some/file
, piped output | less
and outputting directly to the terminal for me.
Update: Since curl 7.67.0 there is a new option --no-progress-meter
which does precisely this and nothing else, see clonejo's answer for more details.
You can add items / sub-items to the ListView like:
ListViewItem item = new ListViewItem(new []{"1","2","3","4"});
listView1.Items.Add(item);
But I suspect your problem is with the View Type. Set it in the designer to Details or do the following in code:
listView1.View = View.Details;
For someone that wondering how to disable the Javascript Google Map API
It will enable the zooming scroll if you click the map once. And disable after your mouse exit the div.
Here is some example
var map;_x000D_
var element = document.getElementById('map-canvas');_x000D_
function initMaps() {_x000D_
map = new google.maps.Map(element , {_x000D_
zoom: 17,_x000D_
scrollwheel: false,_x000D_
center: {_x000D_
lat: parseFloat(-33.915916),_x000D_
lng: parseFloat(151.147159)_x000D_
},_x000D_
});_x000D_
}_x000D_
_x000D_
_x000D_
//START IMPORTANT part_x000D_
//disable scrolling on a map (smoother UX)_x000D_
jQuery('.map-container').on("mouseleave", function(){_x000D_
map.setOptions({ scrollwheel: false });_x000D_
});_x000D_
jQuery('.map-container').on("mousedown", function() {_x000D_
map.setOptions({ scrollwheel: true });_x000D_
});_x000D_
//END IMPORTANT part
_x000D_
.big-placeholder {_x000D_
background-color: #1da261;_x000D_
height: 300px;_x000D_
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<html>_x000D_
<body>_x000D_
<div class="big-placeholder">_x000D_
</div>_x000D_
_x000D_
_x000D_
<!-- START IMPORTANT part -->_x000D_
<div class="map-container">_x000D_
<div id="map-canvas" style="min-height: 400px;"></div> _x000D_
</div>_x000D_
<!-- END IMPORTANT part-->_x000D_
_x000D_
_x000D_
_x000D_
<div class="big-placeholder">_x000D_
</div>_x000D_
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAIjN23OujC_NdFfvX4_AuoGBbkx7aHMf0&callback=initMaps">_x000D_
</script>_x000D_
</body>_x000D_
</html>
_x000D_