For those interested in the details - you can see what's inside the public key file (generated as explained above), by doing this:-
openssl rsa -noout -text -inform PEM -in key.pub -pubin
or for the private key file, this:-
openssl rsa -noout -text -in key.private
which outputs as text on the console the actual components of the key (modulus, exponents, primes, ...)
Reference Decoder of CRL,CRT,CSR,NEW CSR,PRIVATE KEY, PUBLIC KEY,RSA,RSA Public Key Parser
RSA Public Key
-----BEGIN RSA PUBLIC KEY-----
-----END RSA PUBLIC KEY-----
Encrypted Private Key
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
-----END RSA PRIVATE KEY-----
CRL
-----BEGIN X509 CRL-----
-----END X509 CRL-----
CRT
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
CSR
-----BEGIN CERTIFICATE REQUEST-----
-----END CERTIFICATE REQUEST-----
NEW CSR
-----BEGIN NEW CERTIFICATE REQUEST-----
-----END NEW CERTIFICATE REQUEST-----
PEM
-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----
PKCS7
-----BEGIN PKCS7-----
-----END PKCS7-----
PRIVATE KEY
-----BEGIN PRIVATE KEY-----
-----END PRIVATE KEY-----
DSA KEY
-----BEGIN DSA PRIVATE KEY-----
-----END DSA PRIVATE KEY-----
Elliptic Curve
-----BEGIN EC PRIVATE KEY-----
-----END EC PRIVATE KEY-----
PGP Private Key
-----BEGIN PGP PRIVATE KEY BLOCK-----
-----END PGP PRIVATE KEY BLOCK-----
PGP Public Key
-----BEGIN PGP PUBLIC KEY BLOCK-----
-----END PGP PUBLIC KEY BLOCK-----
On the basic question of why openssl is not found: Short answer:Some installation packages for openssl have a default openssl.cnf pre-included. Other packages do not. In the latter case you will include one from the link shown below; You can enter additional user-specifics --DN name,etc-- as needed.
From https://www.openssl.org/docs/manmaster/man5/config.html,I quote directly:
"OPENSSL LIBRARY CONFIGURATION
Applications can automatically configure certain aspects of OpenSSL using the master OpenSSL configuration file, or optionally an alternative configuration file. The openssl utility includes this functionality: any sub command uses the master OpenSSL configuration file unless an option is used in the sub command to use an alternative configuration file.
To enable library configuration the default section needs to contain an appropriate line which points to the main configuration section. The default name is openssl_conf which is used by the openssl utility. Other applications may use an alternative name such as myapplication_conf. All library configuration lines appear in the default section at the start of the configuration file.
The configuration section should consist of a set of name value pairs which contain specific module configuration information. The name represents the name of the configuration module. The meaning of the value is module specific: it may, for example, represent a further configuration section containing configuration module specific information. E.g.:"
So it appears one must self configure openssl.cnf according to your Distinguished Name (DN), along with other entries specific to your use.
Here is the template file from which you can generate openssl.cnf with your specific entries.
One Application actually has a demo installation that includes a demo .cnf file.
Additionally, if you need to programmatically access .cnf files, you can include appropriate headers --openssl/conf.h-- and parse your .cnf files using
CONF_modules_load_file(const char *filename, const char *appname,
unsigned long flags);
Here are docs for "CONF_modules_load_file";
I have solved this problem, try to use root privileges, such as sudo gpg ... I think that gpg elevated without permissions does not refer to file permissions, but system
My answer below is a bit lengthy, but hopefully it provides some details that are missing in previous answers. I'll start with some related statements and finally answer the initial question.
To encrypt something using RSA algorithm you need modulus and encryption (public) exponent pair (n, e). That's your public key. To decrypt something using RSA algorithm you need modulus and decryption (private) exponent pair (n, d). That's your private key.
To encrypt something using RSA public key you treat your plaintext as a number and raise it to the power of e modulus n:
ciphertext = ( plaintext^e ) mod n
To decrypt something using RSA private key you treat your ciphertext as a number and raise it to the power of d modulus n:
plaintext = ( ciphertext^d ) mod n
To generate private (d,n) key using openssl you can use the following command:
openssl genrsa -out private.pem 1024
To generate public (e,n) key from the private key using openssl you can use the following command:
openssl rsa -in private.pem -out public.pem -pubout
To dissect the contents of the private.pem private RSA key generated by the openssl command above run the following (output truncated to labels here):
openssl rsa -in private.pem -text -noout | less
modulus - n
privateExponent - d
publicExponent - e
prime1 - p
prime2 - q
exponent1 - d mod (p-1)
exponent2 - d mod (q-1)
coefficient - (q^-1) mod p
Shouldn't private key consist of (n, d) pair only? Why are there 6 extra components? It contains e (public exponent) so that public RSA key can be generated/extracted/derived from the private.pem private RSA key. The rest 5 components are there to speed up the decryption process. It turns out that by pre-computing and storing those 5 values it is possible to speed the RSA decryption by the factor of 4. Decryption will work without those 5 components, but it can be done faster if you have them handy. The speeding up algorithm is based on the Chinese Remainder Theorem.
Yes, private.pem RSA private key actually contains all of those 8 values; none of them are generated on the fly when you run the previous command. Try running the following commands and compare output:
# Convert the key from PEM to DER (binary) format
openssl rsa -in private.pem -outform der -out private.der
# Print private.der private key contents as binary stream
xxd -p private.der
# Now compare the output of the above command with output
# of the earlier openssl command that outputs private key
# components. If you stare at both outputs long enough
# you should be able to confirm that all components are
# indeed lurking somewhere in the binary stream
openssl rsa -in private.pem -text -noout | less
This structure of the RSA private key is recommended by the PKCS#1 v1.5 as an alternative (second) representation. PKCS#1 v2.0 standard excludes e and d exponents from the alternative representation altogether. PKCS#1 v2.1 and v2.2 propose further changes to the alternative representation, by optionally including more CRT-related components.
To see the contents of the public.pem public RSA key run the following (output truncated to labels here):
openssl rsa -in public.pem -text -pubin -noout
Modulus - n
Exponent (public) - e
No surprises here. It's just (n, e) pair, as promised.
Now finally answering the initial question: As was shown above private RSA key generated using openssl contains components of both public and private keys and some more. When you generate/extract/derive public key from the private key, openssl copies two of those components (e,n) into a separate file which becomes your public key.
From the official install page -
To remove an existing Go installation from your system delete the go directory. This is usually
/usr/local/go
under Linux, macOS, and FreeBSD orc:\Go
under Windows.You should also remove the Go
bin
directory from your PATH environment variable. Under Linux and FreeBSD you should edit/etc/profile
or$HOME/.profile
. If you installed Go with the macOS package then you should remove the/etc/paths.d/go
file. Windows users should read the section about setting environment variables under Windows.
Using "Database View" like entity a.k.a immutable entity is super easy for this case.
@Entity
@Table(name = "people")
data class Person(
@Id
val id: Long = -1,
val firstName: String = "",
val lastName: String? = null
)
@Entity
@Immutable
@Subselect("""
select
p.id,
concat(p.first_name, ' ', p.last_name) as full_name
from people p
""")
data class PersonMin(
@Id
val id: Long,
val fullName: String,
)
In any repository we can create query function/method just like:
@Query(value = "select p from PersonMin p")
fun findPeopleMinimum(pageable: Pageable): Page<PersonMin>
Check if in your php.ini file has the following line:
;extension=php_gd2.dll
if exists, change it to
extension=php_gd2.dll
and restart apache
(it works on MAC)
My regular question is rather "anything new or changed in repo" so whatchanged comes handy. Found it here.
git whatchanged origin/master -n 1
Although, the actual question does not want to iterate over the list to generate the result, but all the solutions that has been proposed does exactly that under-neath the hood!
To refresh: You cannot add two vectors without looking into all the vector elements. So, the algorithmic complexity of most of these solutions are Big-O(n). Where n is the dimension of the vector.
So, from an algorithmic point of view, using a for loop to iteratively generate the resulting list is logical and pythonic too. However, in addition, this method does not have the overhead of calling or importing any additional library.
# Assumption: The lists are of equal length.
resultList = [list1[i] + list2[i] for i in range(len(list1))]
The timings that are being showed/discussed here are system and implementation dependent, and cannot be reliable measure to measure the efficiency of the operation. In any case, the big O complexity of the vector addition operation is linear, meaning O(n).
I implemeneted this algorithm in typescript and ES6
export type Coordinate = {
lat: number;
lon: number;
};
get the distance between two points:
function getDistanceBetweenTwoPoints(cord1: Coordinate, cord2: Coordinate) {
if (cord1.lat == cord2.lat && cord1.lon == cord2.lon) {
return 0;
}
const radlat1 = (Math.PI * cord1.lat) / 180;
const radlat2 = (Math.PI * cord2.lat) / 180;
const theta = cord1.lon - cord2.lon;
const radtheta = (Math.PI * theta) / 180;
let dist =
Math.sin(radlat1) * Math.sin(radlat2) +
Math.cos(radlat1) * Math.cos(radlat2) * Math.cos(radtheta);
if (dist > 1) {
dist = 1;
}
dist = Math.acos(dist);
dist = (dist * 180) / Math.PI;
dist = dist * 60 * 1.1515;
dist = dist * 1.609344; //convert miles to km
return dist;
}
get the distance between an array of coordinates
export function getTotalDistance(coordinates: Coordinate[]) {
coordinates = coordinates.filter((cord) => {
if (cord.lat && cord.lon) {
return true;
}
});
let totalDistance = 0;
if (!coordinates) {
return 0;
}
if (coordinates.length < 2) {
return 0;
}
for (let i = 0; i < coordinates.length - 2; i++) {
if (
!coordinates[i].lon ||
!coordinates[i].lat ||
!coordinates[i + 1].lon ||
!coordinates[i + 1].lat
) {
totalDistance = totalDistance;
}
totalDistance =
totalDistance +
getDistanceBetweenTwoPoints(coordinates[i], coordinates[i + 1]);
}
return totalDistance.toFixed(2);
}
I'm guessing that you meant to do this:
msg['Subject'] = "Auto Hella Restart Report " + sys.argv[1]
# To concatenate strings in python, use ^
With <iomanip>
, you can use std::fixed
and std::setprecision
Here is an example
#include <iostream>
#include <iomanip>
int main()
{
double d = 122.345;
std::cout << std::fixed;
std::cout << std::setprecision(2);
std::cout << d;
}
And you will get output
122.34
Use this command:
egrep -lRZ "\.jpg|\.png|\.gif" . \
| xargs -0 -l sed -i -e 's/\.jpg\|\.gif\|\.png/.bmp/g'
egrep
: find matching lines using extended regular expressions
-l
: only list matching filenames
-R
: search recursively through all given directories
-Z
: use \0
as record separator
"\.jpg|\.png|\.gif"
: match one of the strings ".jpg"
, ".gif"
or ".png"
.
: start the search in the current directory
xargs
: execute a command with the stdin as argument
-0
: use \0
as record separator. This is important to match the -Z
of egrep
and to avoid being fooled by spaces and newlines in input filenames.
-l
: use one line per command as parameter
sed
: the stream editor
-i
: replace the input file with the output without making a backup
-e
: use the following argument as expression
's/\.jpg\|\.gif\|\.png/.bmp/g'
: replace all occurrences of the strings ".jpg"
, ".gif"
or ".png"
with ".bmp"
In line style - this works for me every time
<div class="imgWrapper">
<img src="/theImg.jpg" style="max-width: 100%">
</div>
using jquery $.each
you can access all data and also set in table like this
<table style="width: 100%">
<thead>
<tr>
<th>Id</th>
<th>Name</th>
<th>Category</th>
<th>Color</th>
</tr>
</thead>
<tbody id="tbody">
</tbody>
</table>
$.each(data, function (index, item) {
var eachrow = "<tr>"
+ "<td>" + item[1] + "</td>"
+ "<td>" + item[2] + "</td>"
+ "<td>" + item[3] + "</td>"
+ "<td>" + item[4] + "</td>"
+ "</tr>";
$('#tbody').append(eachrow);
});
There is a high level library dateparser
that can determine the past date given natural language, and return the corresponding Python datetime
object
from dateparser import parse
parse('4 months ago')
You can use the nice_hash gem: https://github.com/MarioRuiz/nice_hash
require 'nice_hash'
my_string = '{"val":"test","val1":"test1","val2":"test2"}'
# on my_hash will have the json as a hash, even when nested with arrays
my_hash = my_string.json
# you can filter and get what you want even when nested with arrays
vals = my_string.json(:val1, :val2)
# even you can access the keys like this:
puts my_hash._val1
puts my_hash.val1
puts my_hash[:val1]
also, to get the right arrow, right click and "Add as Library".
For your first method change ws.Range("A")
to ws.Range("A:A")
which will search the entirety of column a, like so:
Sub Find_Bingo()
Dim wb As Workbook
Dim ws As Worksheet
Dim FoundCell As Range
Set wb = ActiveWorkbook
Set ws = ActiveSheet
Const WHAT_TO_FIND As String = "Bingo"
Set FoundCell = ws.Range("A:A").Find(What:=WHAT_TO_FIND)
If Not FoundCell Is Nothing Then
MsgBox (WHAT_TO_FIND & " found in row: " & FoundCell.Row)
Else
MsgBox (WHAT_TO_FIND & " not found")
End If
End Sub
For your second method, you are using Bingo
as a variable instead of a string literal. This is a good example of why I add Option Explicit
to the top of all of my code modules, as when you try to run the code it will direct you to this "variable" which is undefined and not intended to be a variable at all.
Additionally, when you are using With...End With
you need a period .
before you reference Cells
, so Cells
should be .Cells
. This mimics the normal qualifying behavior (i.e. Sheet1.Cells.Find..)
Change Bingo
to "Bingo"
and change Cells
to .Cells
With Sheet1
Set FoundCell = .Cells.Find(What:="Bingo", After:=.Cells(1, 1), _
LookIn:=xlValues, lookat:=xlPart, SearchOrder:=xlByRows, _
SearchDirection:=xlNext, MatchCase:=False, SearchFormat:=False)
End With
If Not FoundCell Is Nothing Then
MsgBox ("""Bingo"" found in row " & FoundCell.Row)
Else
MsgBox ("Bingo not found")
End If
In my
With Sheet1
.....
End With
The Sheet1
refers to a worksheet's code name, not the name of the worksheet itself. For example, say I open a new blank Excel workbook. The default worksheet is just Sheet1
. I can refer to that in code either with the code name of Sheet1
or I can refer to it with the index of Sheets("Sheet1")
. The advantage to using a codename is that it does not change if you change the name of the worksheet.
Continuing this example, let's say I renamed Sheet1
to Data
. Using Sheet1
would continue to work, as the code name doesn't change, but now using Sheets("Sheet1")
would return an error and that syntax must be updated to the new name of the sheet, so it would need to be Sheets("Data")
.
In the VB Editor you would see something like this:
Notice how, even though I changed the name to Data
, there is still a Sheet1
to the left. That is what I mean by codename.
The Data
worksheet can be referenced in two ways:
Debug.Print Sheet1.Name
Debug.Print Sheets("Data").Name
Both should return Data
More discussion on worksheet code names can be found here.
Besides the box-shadow, transform and border options mentioned in other answers, WebKit browsers currently also obey -webkit-text-fill-color to set the colour of the "time elapsed" numbers, but since there is no way to set their background (which might vary with platform, e.g. inverted high-contrast modes on some operating systems), you would be advised to set -webkit-text-fill-color to the value "initial" if you've used it elsewhere and the audio element is inheriting this, otherwise some users might find those numbers unreadable.
This code may be helpful for you.
from tkinter import filedialog
from tkinter import *
root = Tk()
root.withdraw()
folder_selected = filedialog.askdirectory()
Ah yes, that is how it is intended in SQL. You get the Max of every column seperately. It seems like you want to return values from the row with the max date, so you have to select the row with the max date. I prefer to do this with a subselect, as the queries keep compact easy to read.
SELECT TrainingID, CompletedDate, Notes
FROM HR_EmployeeTrainings ET
WHERE (ET.AvantiRecID IS NULL OR ET.AvantiRecID = @avantiRecID)
AND CompletedDate in
(Select Max(CompletedDate) from HR_EmployeeTrainings B
where B.TrainingID = ET.TrainingID)
If you also want to match by AntiRecID you should include that in the subselect as well.
If you’re concerned about your code breaking, you should commit the composer.lock
to your version control system to ensure all your project collaborators are using the same version of the code. Without a lock file, you will get new third-party code being pulled down each time.
The exception is when you use a meta apps, libraries where the dependencies should be updated on install (like the Zend Framework 2 Skeleton App). So the aim is to grab the latest dependencies each time when you want to start developing.
Source: Composer: It’s All About the Lock File
See also: What are the differences between composer update and composer install?
Final class cannot be extended further. If we do not need to make a class inheritable in java,we can use this approach.
If we just need to make particular methods in a class not to be overridden, we just can put final keyword in front of them. There the class is still inheritable.
I had this issue too and tried different memory expansion techniques I found on the web but had more troubles with it.
I resolved to using the MySQL console source
command, and of course you don't have to worry about phpMyAdmin or PHP maximum execution time and limits.
Syntax: source c:\path\to\dump_file.sql
Note: It's better to specify an absolute path to the dump file since the mysql working directory might not be known.
I've wrote this small script when the number of branches in my repo exceeded several hundreds. I did not know about the other methods (with CLI) so I decided to automate it with selenium. It simply opens Bitbucket website, goes to Branches, scrolls down the page to the end and clicks on every branch options menu -> clicks Delete button -> clicks Yes. It can be tuned to keep the last N (100 - default) branches and skip branches with specific names (master, develop - default, could be more). If this fits for you, you can try that way.
https://github.com/globad/remove-old-branches
All you need is to clone the repository, download the proper version of Chrome-webdriver, input few constants like URL to your repository and run the script.
The code is simple enough to understand. If you have any questions, write comments / create an Issue.
I use this alias
git config --global alias.track '!f() { ([ $# -eq 2 ] && ( echo "Setting tracking for branch " $1 " -> " $2;git branch --set-upstream $1 $2; ) || ( git for-each-ref --format="local: %(refname:short) <--sync--> remote: %(upstream:short)" refs/heads && echo --Remotes && git remote -v)); }; f'
then
git track
I had this error when running an old python script developped with Python 2.6.4
When updating to 3.6.2, I had to remove all 'rb' parameters from open calls in order to fix this csv reading error.
Visual Studio Community is same (almost) as professional edition. What differs is that VS community do not have TFS features, and the licensing is different. As stated by @Stefan.
The different versions on VS are compared here - https://www.visualstudio.com/en-us/products/compare-visual-studio-2015-products-vs
I can additionally recommend Yet Another Haskell Tutorial as an introduction.
Another good learning resource (probably on the intermediate level), which has helped me a lot and hasn't been mentioned in the other answers as far as I can see, is Brent Yorgey's Typeclassopedia, which can be found in The Monad Reader (Issue 13)
It is written in a very accessible style and contains (among many other things), the following introductory advice:
There are two keys to an expert Haskell hacker’s wisdom:
Understand the types.
Gain a deep intuition for each type class and its relationship to other type classes, backed up by familiarity with many examples.
The Monad Reader itself is an absolute treasure trove for functional programmers (not only Haskell programmers).
if You use Laravel version 5.2 Review this: https://laravel.com/docs/5.2/requests#accessing-the-request
use Illuminate\Http\Request;//Access able for All requests
...
class myController extends Controller{
public function myfunction(Request $request){
$name = $request->input('username');
}
}
Sadly @Andrés Montoya answer has a flaw which is related to how he compares the obj. I found a solution here which should solve this:
const now = Date.now().valueOf() / 1000
if (typeof decoded.exp !== 'undefined' && decoded.exp < now) {
throw new Error(`token expired: ${JSON.stringify(decoded)}`)
}
if (typeof decoded.nbf !== 'undefined' && decoded.nbf > now) {
throw new Error(`token expired: ${JSON.stringify(decoded)}`)
}
Thanks to thejohnfreeman!
Reading the section 3.7 of JLS well explain all you need to know about comments in Java.
There are two kinds of comments:
- /* text */
A traditional comment: all the text from the ASCII characters /* to the ASCII characters */ is ignored (as in C and C++).
- //text
An end-of-line comment: all the text from the ASCII characters // to the end of the line is ignored (as in C++).
About your question,
The first one
/**
*
*/
is used to declare Javadoc Technology.
Javadoc is a tool that parses the declarations and documentation comments in a set of source files and produces a set of HTML pages describing the classes, interfaces, constructors, methods, and fields. You can use a Javadoc doclet to customize Javadoc output. A doclet is a program written with the Doclet API that specifies the content and format of the output to be generated by the tool. You can write a doclet to generate any kind of text file output, such as HTML, SGML, XML, RTF, and MIF. Oracle provides a standard doclet for generating HTML-format API documentation. Doclets can also be used to perform special tasks not related to producing API documentation.
For more information on Doclet
refer to the API.
The second one, as explained clearly in JLS, will ignore all the text between /*
and */
thus is used to create multiline comments.
Some other things you might want to know about comments in Java
/* and */
have no special meaning in comments that begin with //
.//
has no special meaning in comments that begin with /* or /**
.Thus, the following text is a single complete comment:
/* this comment /* // /** ends here: */
ngModel
and ngChecked
are not meant to be used together.
ngChecked
is expecting an expression, so by saying ng-checked="true"
, you're basically saying that the checkbox will always be checked by default.
You should be able to just use ngModel
, tied to a boolean property on your model. If you want something else, then you either need to use ngTrueValue
and ngFalseValue
(which only support strings right now), or write your own directive.
What is it exactly that you're trying to do? If you just want the first checkbox to be checked by default, you should change your model -- item1: true,
.
Edit: You don't have to submit your form to debug the current state of the model, btw, you can just dump {{testModel}}
into your HTML (or <pre>{{testModel|json}}</pre>
). Also your ngModel
attributes can be simplified to ng-model="testModel.item1"
.
For a number, it is tricky because if a numeric cell is empty
VBA will assign a default value of 0 to it, so it is hard for your VBA code to tell the difference between an entered zero and a blank numeric cell.
The following check worked for me to see if there was an actual 0 entered into the cell:
If CStr(rng.value) = "0" then
'your code here'
End If
if you want to get an attribute of an HTML element with jQuery you can use .attr();
so $('html').attr('someAttribute');
will give you the value of someAttribute
of the element html
there is a jQuery plugin here: http://plugins.jquery.com/project/getAttributes
that allows you to get all attributes from an HTML element
The Big and small black triangles facing the 4 directions can be represented thus:
▲
▲
▴
▴
▶
▶
▸
▸
►
►
▼
▼
▾
▾
◀
◀
◂
◂
◄
◄
Well, you're getting a java.lang.NoClassDefFoundError
. In your pom.xml
, hibernate-core
version is 3.3.2.GA
and declared after hibernate-entitymanager
, so it prevails. You can remove that dependency, since will be inherited version 3.6.7.Final
from hibernate-entitymanager
.
You're using spring-boot
as parent, so no need to declare version of some dependencies, since they are managed by spring-boot
.
Also, hibernate-commons-annotations
is inherited from hibernate-entitymanager
and hibernate-annotations
is an old version of hibernate-commons-annotations
, you can remove both.
Finally, your pom.xml
can look like this:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.elsys.internetprogramming.trafficspy.server</groupId>
<artifactId>TrafficSpyService</artifactId>
<version>0.1.0</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.3.RELEASE</version>
</parent>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cloud-connectors</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>javax.persistence</artifactId>
<version>2.0.0</version>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
</dependency>
<!-- MySQL -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
<properties>
<java.version>1.7</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</repository>
<repository>
<id>codehaus</id>
<url>http://repository.codehaus.org/org/codehaus</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<url>https://repo.spring.io/libs-release</url>
</pluginRepository>
</pluginRepositories>
</project>
Let me know if you have a problem.
I know the OP specifically mentioned jQuery but I wanted to put an answer here to introduce people to the helpful Underscore library if they are not aware of it already.
By leveraging the keys
method in the Underscore library, you can simply do the following:
_.keys(foo) #=> ["alfa", "beta"]
Plus, there's a plethora of other useful functions that are worth perusing.
I've been told they are the same.
Actually they are documented in the same place under ruby-doc.org:
http://www.ruby-doc.org/core/classes/Array.html#M000249
- ary.collect {|item| block } ? new_ary
- ary.map {|item| block } ? new_ary
- ary.collect ? an_enumerator
- ary.map ? an_enumerator
Invokes block once for each element of self. Creates a new array containing the values returned by the block. See also Enumerable#collect.
If no block is given, an enumerator is returned instead.a = [ "a", "b", "c", "d" ] a.collect {|x| x + "!" } #=> ["a!", "b!", "c!", "d!"] a #=> ["a", "b", "c", "d"]
It´s out of the scope of the question, but I think it might be also interesting to know how to link to a route. The query would look like this:
https://www.google.es/maps/dir/'52.51758801683297,13.397978515625027'/'52.49083837044266,13.369826049804715'
After you correct the possible dmp file problem, this is a way to ensure that the schema is remapped and imported appropriately. This will also ensure that the tablespace will change also, if needed:
impdp system/<password> SCHEMAS=user1 remap_schema=user1:user2 \
remap_tablespace=user1:user2 directory=EXPORTDIR \
dumpfile=user1.dmp logfile=E:\Data\user1.log
EXPORTDIR must be defined in oracle as a directory as the system user
create or replace directory EXPORTDIR as 'E:\Data';
grant read, write on directory EXPORTDIR to user2;
Just to summarise all the answers:
This is what worked for me
find . -type f -name "*.svg" -exec bash -c 'rsvg-convert -h 1000 $0 > $0.png' {} \;
rename 's/svg\.png/png/' *
This will loop all the files in your current folder and sub folder and look for .svg
files and will convert it to png with transparent background.
Make sure you have installed the librsvg and rename util
brew install librsvg
brew install rename
One workaround, though not a great one, is to use the new @facebook.com email address. There are a few downsides to this:
1) Not everyone (as of this posting) has the new messages application enabled in their account.
2) Not everyone will have setup their @facebook.com email in their messages app.
3) Not everyone will choose their username (if they even have a facebook username) as their email address.
You are correct in that the entire transaction will be rolled back. You should issue the command to roll it back.
You can wrap this in a TRY CATCH
block as follows
BEGIN TRY
BEGIN TRANSACTION
INSERT INTO myTable (myColumns ...) VALUES (myValues ...);
INSERT INTO myTable (myColumns ...) VALUES (myValues ...);
INSERT INTO myTable (myColumns ...) VALUES (myValues ...);
COMMIT TRAN -- Transaction Success!
END TRY
BEGIN CATCH
IF @@TRANCOUNT > 0
ROLLBACK TRAN --RollBack in case of Error
-- you can Raise ERROR with RAISEERROR() Statement including the details of the exception
RAISERROR(ERROR_MESSAGE(), ERROR_SEVERITY(), 1)
END CATCH
android.os.Build.VERSION.SDK should give you the value of the API Level. You can easily find the mapping from api level to android version in the android documentation. I believe, 8 is for 2.2, 7 for 2.1, and so on.
In case 1, because of order of operations you get:
(hello + ", world") + "!" which resolves to hello + "!" and finally to hello
In case 2, as James noted, you get:
("Hello" + ", world") + exclam which is the concat of 2 string literals.
Hope it's clear :)
I like ThomasA's answer, but wanted a more realistic context with the wave being used to separate two divs. So I created a more complete demo where the separator SVG gets positioned perfectly between the two divs.
Now I thought it would be cool to take it further. What if we could do this all in CSS without the need for the inline SVG? The point being to avoid extra markup. Here's how I did it:
Two simple <div>
:
/** CSS using pseudo-elements: **/_x000D_
_x000D_
#A {_x000D_
background: #0074D9;_x000D_
}_x000D_
_x000D_
#B {_x000D_
background: #7FDBFF;_x000D_
}_x000D_
_x000D_
#A::after {_x000D_
content: "";_x000D_
position: relative;_x000D_
left: -3rem;_x000D_
/* padding * -1 */_x000D_
top: calc( 3rem - 4rem / 2);_x000D_
/* padding - height/2 */_x000D_
float: left;_x000D_
display: block;_x000D_
height: 4rem;_x000D_
width: 100vw;_x000D_
background: hsla(0, 0%, 100%, 0.5);_x000D_
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 70 500 60' preserveAspectRatio='none'%3E%3Crect x='0' y='0' width='500' height='500' style='stroke: none; fill: %237FDBFF;' /%3E%3Cpath d='M0,100 C150,200 350,0 500,100 L500,00 L0,0 Z' style='stroke: none; fill: %230074D9;'%3E%3C/path%3E%3C/svg%3E");_x000D_
background-size: 100% 100%;_x000D_
}_x000D_
_x000D_
_x000D_
/** Cosmetics **/_x000D_
_x000D_
* {_x000D_
margin: 0;_x000D_
}_x000D_
_x000D_
#A,_x000D_
#B {_x000D_
padding: 3rem;_x000D_
}_x000D_
_x000D_
div {_x000D_
font-family: monospace;_x000D_
font-size: 1.2rem;_x000D_
line-height: 1.2;_x000D_
}_x000D_
_x000D_
#A {_x000D_
color: white;_x000D_
}
_x000D_
<div id="A">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus nec quam tincidunt, iaculis mi non, hendrerit felis. Nulla pretium lectus et arcu tempus, quis luctus ex imperdiet. In facilisis nulla suscipit ornare finibus. …_x000D_
</div>_x000D_
_x000D_
<div id="B" class="wavy">… In iaculis fermentum lacus vel porttitor. Vestibulum congue elementum neque eget feugiat. Donec suscipit diam ligula, aliquam consequat tellus sagittis porttitor. Sed sodales leo nisl, ut consequat est ornare eleifend. Cras et semper mi, in porta nunc.</div>
_x000D_
Demo Wavy divider (with CSS pseudo-elements to avoid extra markup)
It was a bit trickier to position than with an inline SVG but works just as well. (Could use CSS custom properties or pre-processor variables to keep the height and padding easy to read.)
To edit the colors, you need to edit the URL-encoded SVG itself.
Pay attention (like in the first demo) to a change in the viewBox
to get rid of unwanted spaces in the SVG. (Another option would be to draw a different SVG.)
Another thing to pay attention to here is the background-size
set to 100% 100%
to get it to stretch in both directions.
I am happy that browsers care to save us from intrusive scripts and the like. I am not happy with IE putting something into the browser that makes a simple style-fix look like a hack-attack!
I've used a < span > to represent the file-input so that I could apply appropriate styling to the < div > instead of the < input > (once again, because of IE). Now due to this IE want's to show the User a path with a value that's just guaranteed to put them on guard and in the very least apprehensive (if not totally scare them off?!)... MORE IE-CRAP!
Anyhow, thanks to to those who posted the explanation here: IE Browser Security: Appending "fakepath" to file path in input[type="file"], I've put together a minor fixer-upper...
The code below does two things - it fixes a lte IE8 bug where the onChange event doesn't fire until the upload field's onBlur and it updates an element with a cleaned filepath that won't scare the User.
// self-calling lambda to for jQuery shorthand "$" namespace
(function($){
// document onReady wrapper
$().ready(function(){
// check for the nefarious IE
if($.browser.msie) {
// capture the file input fields
var fileInput = $('input[type="file"]');
// add presentational <span> tags "underneath" all file input fields for styling
fileInput.after(
$(document.createElement('span')).addClass('file-underlay')
);
// bind onClick to get the file-path and update the style <div>
fileInput.click(function(){
// need to capture $(this) because setTimeout() is on the
// Window keyword 'this' changes context in it
var fileContext = $(this);
// capture the timer as well as set setTimeout()
// we use setTimeout() because IE pauses timers when a file dialog opens
// in this manner we give ourselves a "pseudo-onChange" handler
var ieBugTimeout = setTimeout(function(){
// set vars
var filePath = fileContext.val(),
fileUnderlay = fileContext.siblings('.file-underlay');
// check for IE's lovely security speil
if(filePath.match(/fakepath/)) {
// update the file-path text using case-insensitive regex
filePath = filePath.replace(/C:\\fakepath\\/i, '');
}
// update the text in the file-underlay <span>
fileUnderlay.text(filePath);
// clear the timer var
clearTimeout(ieBugTimeout);
}, 10);
});
}
});
})(jQuery);
Providing you know these vim commands:
1G -> go to first line in file
G -> go to last line in file
then, the following make more sense, are more unitary and easier to remember IMHO:
d1G -> delete starting from the line you are on, to the first line of file
dG -> delete starting from the line you are on, to the last line of file
Cheers.
Disclaimer: Following points are only applicable for API calls and not the website URLs.
Security over the network: You must use HTTPS. GET and POST are equally safe in this case.
Browser History: For front-end applications like, Angular JS, React JS etc API calls are AJAX calls made by front-end. These does not become part of browser history. Hence, POST and GET are equally secure.
Server side logs: With using write set of data-masking and access logs format it is possible to hide all or only sensitive data from request-URL.
Data visibility in browser console: For someone with mallicious intent, it's almost the same efforts to view POST data as much as GET.
Hence, with right logging practices, GET API is as secure as POST API. Following POST everywhere, forces poor API definitions and should be avoided.
Inspired from answers by @i4niac & @Aurélien Lambert, this is what i came up with
csv_update_numbers=$(./android list sdk --all | grep 'Android SDK Build-tools' | grep -v 'Obsolete' | sed 's/\(.*\)\- A.*/\1/'|sed '/^$/d'|sed -e 's/^[ \t]*//'| tr '\n' ',')
csv_update_numbers_without_trailing_comma=${csv_update_numbers%?}
( sleep 5 && while [ 1 ]; do sleep 1; echo y; done ) \
| ./android update sdk --all -u -t $csv_update_numbers_without_trailing_comma
Explanation
android list sdk --all
command (Ignoring obsolete packages).Just print out the embed after construction graph (ops) without running:
import tensorflow as tf
...
train_dataset = tf.placeholder(tf.int32, shape=[128, 2])
embeddings = tf.Variable(
tf.random_uniform([50000, 64], -1.0, 1.0))
embed = tf.nn.embedding_lookup(embeddings, train_dataset)
print (embed)
This will show the shape of the embed tensor:
Tensor("embedding_lookup:0", shape=(128, 2, 64), dtype=float32)
Usually, it's good to check shapes of all tensors before training your models.
just start the mongo server from terminal
Ubuntu -
sudo systemctl start mongod
playSound is a static method in your class, but you are referring to members like audioSounds
or minTime
which are not declared static
so they would require a SoundManager sm = new SoundManager();
to operate as sm.audioSounds
or sm.minTime
respectively
Solution:
public static List<AudioSource> audioSounds = new List<AudioSource>();
public static double minTime = 0.5;
I was playing around with C# code an I accidentally found the solution to your problem haha
This is the code for the Principal view:
`@model dynamic
@Html.Partial("_Partial", Model as IDictionary<string, object>)`
Then in the Partial view:
`@model dynamic
@if (Model != null) {
foreach (var item in Model)
{
<div>@item.text</div>
}
}`
It worked for me, I hope this will help you too!!
COLLATE UTF8_GENERAL_CI
will work as ignore-case.
USE:
SELECT * from games WHERE title COLLATE UTF8_GENERAL_CI LIKE 'age of empires III%';
or
SELECT * from games WHERE LOWER(title) LIKE 'age of empires III%';
Make sure you declare the bean associated with the form in GET method of the associated controller and also add it in the model model.addAttribute("uploadItem", uploadItem);
which contains @RequestMapping(method = RequestMethod.GET)
annotation.
For example UploadItem.java is associated with myform.jsp and controller is SecureAreaController.java
myform.jsp contains
<form:form action="/securedArea" commandName="uploadItem" enctype="multipart/form-data"></form:form>
@RequestMapping("/securedArea")
@Controller
public class SecureAreaController {
@RequestMapping(method = RequestMethod.GET)
public String showForm(Model model) {
UploadItem uploadItem = new UploadItem(); // declareing
model.addAttribute("uploadItem", uploadItem); // adding in model
return "securedArea/upload";
}
}
As you can see I am declaring UploadItem.java in controller GET method.
In the device manager you can select View > Show hidden devices
I didn't create my virtualenv using sudo. So Sebastian's answer didn't apply to me. My project is called utils
. I checked utils
directory and saw this:
-rw-r--r-- 1 macuser staff 983 6 Jan 15:17 README.md
drwxr-xr-x 6 root staff 204 6 Jan 14:36 utils.egg-info
-rw-r--r-- 1 macuser staff 31 6 Jan 15:09 requirements.txt
As you can see, utils.egg-info
is owned by root
not macuser
. That is why it was giving me permission denied
error. I also had to remove /Users/macuser/.virtualenvs/armoury/lib/python2.7/site-packages/utils.egg-link
as it was created by root
as well. I did pip install -e .
again after removing those, and it worked.
If you use this syntax:
<div ng-attr-id="{{ 'object-' + myScopeObject.index }}"></div>
Angular will render something like:
<div ng-id="object-1"></div>
However this syntax:
<div id="{{ 'object-' + $index }}"></div>
will generate something like:
<div id="object-1"></div>
Yes, you will likely need to add another jar or dependency
javax.persistence.*
is part of the Java Persistence API (JPA). It is only an API, you can think of it as similar to an interface. There are many implementations of JPA and this answer gives a very good elaboration of each, as well as which to use.
If your javax.persistence.*
import cannot be resolved, you will need to provide the jar that implements JPA. You can do that either by manually downloading it (and adding it to your project) or by adding a declaration to a dependency management tool (for eg, Ivy/Maven/Gradle). See here for the EclipseLink implementation (the reference implementation) on Maven repo.
After doing that, your imports should be resolved.
Also see here for what is JPA about. The xml you are referring to could be persistence.xml
, which is explained on page 3 of the link.
That being said, you might just be pointing to the wrong target runtime
If i recall correctly, you don't need to provide a JPA implementation if you are deploying it into a JavaEE app server like JBoss. See here "Note that you typically don't need it when you deploy your application in a Java EE 6 application server (like JBoss AS 6 for example).". Try changing your project's target runtime.
If your local project was setup to point to Tomcat while your remote repo assumes a JavaEE server, this could be the case. See here for the difference between Tomcat and JBoss.
Edit: I changed my project to point to GlassFish instead of Tomcat and javax.persistence.*
resolved fine without any explicit JPA dependency.
In my case, I had 2 Apple IDs in my Xcode preferences (Xcode -> Preferences -> Accounts), so I had to remove one. After I removed Apple ID that I didn't need, validation process worked just fine.
Wasted a few hours, just because the error message is useless. This is so frustrating.
"We can break the $.each() loop at a particular iteration by making the callback function return false. Returning non-false is the same as a continue statement in a for loop; it will skip immediately to the next iteration."
from http://api.jquery.com/jquery.each/
Yea, this is old BUT, JUST to answer the question, this can be a bit simpler:
function findXX(word) {_x000D_
$.each(someArray, function(index, value) {_x000D_
$('body').append('-> ' + index + ":" + value + '<br />');_x000D_
return !(value == word);_x000D_
});_x000D_
}_x000D_
$(function() {_x000D_
someArray = new Array();_x000D_
someArray[0] = 't5';_x000D_
someArray[1] = 'z12';_x000D_
someArray[2] = 'b88';_x000D_
someArray[3] = 's55';_x000D_
someArray[4] = 'e51';_x000D_
someArray[5] = 'o322';_x000D_
someArray[6] = 'i22';_x000D_
someArray[7] = 'k954';_x000D_
findXX('o322');_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
_x000D_
A bit more with comments:
function findXX(myA, word) {_x000D_
let br = '<br />';//create once_x000D_
let myHolder = $("<div />");//get a holder to not hit DOM a lot_x000D_
let found = false;//default return_x000D_
$.each(myA, function(index, value) {_x000D_
found = (value == word);_x000D_
myHolder.append('-> ' + index + ":" + value + br);_x000D_
return !found;_x000D_
});_x000D_
$('body').append(myHolder.html());// hit DOM once_x000D_
return found;_x000D_
}_x000D_
$(function() {_x000D_
// no horrid global array, easier array setup;_x000D_
let someArray = ['t5', 'z12', 'b88', 's55', 'e51', 'o322', 'i22', 'k954'];_x000D_
// pass the array and the value we want to find, return back a value_x000D_
let test = findXX(someArray, 'o322');_x000D_
$('body').append("<div>Found:" + test + "</div>");_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
_x000D_
NOTE: array .includes()
may better suit here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
Or just .find()
to get that https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
You can do this (YAML block):
~~~
# This is a
# multiline
# comment
...
I tried with latex output only, please confirm for others.
<MyComponent />
compiles to React.createElement(MyComponent, {})
, which expects a string (HTML tag) or a function (ReactClass) as first parameter.
You could just store your component class in a variable with a name that starts with an uppercase letter. See HTML tags vs React Components.
var MyComponent = Components[type + "Component"];
return <MyComponent />;
compiles to
var MyComponent = Components[type + "Component"];
return React.createElement(MyComponent, {});
There is this MarkerClusterer
client side utility available for google Map as specified here on Google Map developer Articles, here is brief on what's it's usage:
There are many approaches for doing what you asked for:
You can read about them on the provided link above.
Marker Clusterer
uses Grid Based Clustering to cluster all the marker wishing the grid. Grid-based clustering works by dividing the map into squares of a certain size (the size changes at each zoom) and then grouping the markers into each grid square.
I hope this is what you were looking for & this will solve your problem :)
<head>
<style>
header{
color: #f4f4f4;
background-image: url("header-background.jpeg");
}
header img{
float: left;
display: inline-block;
}
header h1{
font-size: 40px;
color: #f4f4f4;
display: inline-block;
position: relative;
padding: 20px 20px 0 0;
display: inline-block;
}
</style></head>
<header>
<a href="index.html">
<img src="./branding.png" alt="technocrat logo" height="100px" width="100px"></a>
<a href="index.html">
<h1><span> Technocrat</span> Blog</h1></a>
</div></header>
Using recursion and walrus operator:
def prime_factors(n):
for i in range(2, int(n ** 0.5) + 1):
if (q_r := divmod(n, i))[1] == 0:
return [i] + factor_list(q_r[0])
return [n]
In case performance is more important than readability and as long as your condition consists of simple arithmetic operations, you can use aggregation pipeline. First, use $project to calculate the left hand side of the condition (take all fields to left hand side). Then use $match to compare with a constant and filter. This way you avoid javascript execution. Below is my test in python:
import pymongo
from random import randrange
docs = [{'Grade1': randrange(10), 'Grade2': randrange(10)} for __ in range(100000)]
coll = pymongo.MongoClient().test_db.grades
coll.insert_many(docs)
Using aggregate:
%timeit -n1 -r1 list(coll.aggregate([
{
'$project': {
'diff': {'$subtract': ['$Grade1', '$Grade2']},
'Grade1': 1,
'Grade2': 1
}
},
{
'$match': {'diff': {'$gt': 0}}
}
]))
1 loop, best of 1: 192 ms per loop
Using find and $where:
%timeit -n1 -r1 list(coll.find({'$where': 'this.Grade1 > this.Grade2'}))
1 loop, best of 1: 4.54 s per loop
mkdirs()
also creates parent directories in the path this File
represents.
javadocs for mkdirs()
:
Creates the directory named by this abstract pathname, including any necessary but nonexistent parent directories. Note that if this operation fails it may have succeeded in creating some of the necessary parent directories.
javadocs for mkdir()
:
Creates the directory named by this abstract pathname.
Example:
File f = new File("non_existing_dir/someDir");
System.out.println(f.mkdir());
System.out.println(f.mkdirs());
will yield false
for the first [and no dir will be created], and true
for the second, and you will have created non_existing_dir/someDir
swift 3
let preferredLanguage = Locale.preferredLanguages[0] as String
print (preferredLanguage) //en-US
let arr = preferredLanguage.components(separatedBy: "-")
let deviceLanguage = arr.first
print (deviceLanguage) //en
Prefork and worker are two type of MPM apache provides. Both have their merits and demerits.
By default mpm is prefork which is thread safe.
Prefork MPM uses multiple child processes with one thread each and each process handles one connection at a time.
Worker MPM uses multiple child processes with many threads each. Each thread handles one connection at a time.
For more details you can visit https://httpd.apache.org/docs/2.4/mpm.html and https://httpd.apache.org/docs/2.4/mod/prefork.html
I agree with what @fge said, more over. Lets look at example. Consider you have a method:
class A {
public void foo(OtherClass other) {
SomeData data = new SomeData("Some inner data");
other.doSomething(data);
}
}
Now if you want to check the inner data you can use the captor:
// Create a mock of the OtherClass
OtherClass other = mock(OtherClass.class);
// Run the foo method with the mock
new A().foo(other);
// Capture the argument of the doSomething function
ArgumentCaptor<SomeData> captor = ArgumentCaptor.forClass(SomeData.class);
verify(other, times(1)).doSomething(captor.capture());
// Assert the argument
SomeData actual = captor.getValue();
assertEquals("Some inner data", actual.innerData);
Some time you have to give all the form element into a same div.
example:-
If you are using ajax submit with modal.
So all the elements are in modal body.
Some time we put submit button in modal footer.
An alternative to 'LOAD DATA' is available in which the data will not be moved from your existing source location to hive data warehouse location.
You can use ALTER TABLE command with 'LOCATION' option. Here is below required command
ALTER TABLE table_name ADD PARTITION (date_col='2017-02-07') LOCATION 'hdfs/path/to/location/'
The only condition here is, the location should be a directory instead of file.
Hope this will solve the problem.
In simple words: segmentation fault is the operating system sending a signal to the program saying that it has detected an illegal memory access and is prematurely terminating the program to prevent memory from being corrupted.
I believe you have libx264
installed and configured with ffmpeg
to convert video to h264
... Then you can try with -vcodec libx264
... The -format
option is for showing available formats, this is not a conversion option I think...
Adding allowfullscreen="allowfullscreen"
and altering the type of YouTube embed fixed my issue.
$observe() is a method on the Attributes object, and as such, it can only be used to observe/watch the value change of a DOM attribute. It is only used/called inside directives. Use $observe when you need to observe/watch a DOM attribute that contains interpolation (i.e., {{}}'s).
E.g., attr1="Name: {{name}}"
, then in a directive: attrs.$observe('attr1', ...)
.
(If you try scope.$watch(attrs.attr1, ...)
it won't work because of the {{}}s -- you'll get undefined
.) Use $watch for everything else.
$watch() is more complicated. It can observe/watch an "expression", where the expression can be either a function or a string. If the expression is a string, it is $parse'd (i.e., evaluated as an Angular expression) into a function. (It is this function that is called every digest cycle.) The string expression can not contain {{}}'s. $watch is a method on the Scope object, so it can be used/called wherever you have access to a scope object, hence in
Because strings are evaluated as Angular expressions, $watch is often used when you want to observe/watch a model/scope property. E.g., attr1="myModel.some_prop"
, then in a controller or link function: scope.$watch('myModel.some_prop', ...)
or scope.$watch(attrs.attr1, ...)
(or scope.$watch(attrs['attr1'], ...)
).
(If you try attrs.$observe('attr1')
you'll get the string myModel.some_prop
, which is probably not what you want.)
As discussed in comments on @PrimosK's answer, all $observes and $watches are checked every digest cycle.
Directives with isolate scopes are more complicated. If the '@' syntax is used, you can $observe or $watch a DOM attribute that contains interpolation (i.e., {{}}'s). (The reason it works with $watch is because the '@' syntax does the interpolation for us, hence $watch sees a string without {{}}'s.) To make it easier to remember which to use when, I suggest using $observe for this case also.
To help test all of this, I wrote a Plunker that defines two directives. One (d1
) does not create a new scope, the other (d2
) creates an isolate scope. Each directive has the same six attributes. Each attribute is both $observe'd and $watch'ed.
<div d1 attr1="{{prop1}}-test" attr2="prop2" attr3="33" attr4="'a_string'"
attr5="a_string" attr6="{{1+aNumber}}"></div>
Look at the console log to see the differences between $observe and $watch in the linking function. Then click the link and see which $observes and $watches are triggered by the property changes made by the click handler.
Notice that when the link function runs, any attributes that contain {{}}'s are not evaluated yet (so if you try to examine the attributes, you'll get undefined
). The only way to see the interpolated values is to use $observe (or $watch if using an isolate scope with '@'). Therefore, getting the values of these attributes is an asynchronous operation. (And this is why we need the $observe and $watch functions.)
Sometimes you don't need $observe or $watch. E.g., if your attribute contains a number or a boolean (not a string), just evaluate it once: attr1="22"
, then in, say, your linking function: var count = scope.$eval(attrs.attr1)
. If it is just a constant string – attr1="my string"
– then just use attrs.attr1
in your directive (no need for $eval()).
See also Vojta's google group post about $watch expressions.
I think you want to specify
-H "Content-Type:text/xml"
with a colon, not an equals.
here is your method
public int lastDigit(int number)
{
//your code goes here.
int last =number%10;
return last;
}
If the performance hit of the default constructor isn't an issue, the please, for the love of god, go with the more readable version.
:)
You can load a local Javascript file (in the tree below your file:/
source page) using the source tag:
<script src="my_data.js"></script>
If you encode your input into Javascript, like in this case:
mydata.js:
$xsl_text = "<xsl:stylesheet version="1.0" + ....
(this is easier for json) then you have your 'data' in a Javascript global variable to use as you wish.
I know this question was asked over 2 years ago but no one has mentioned this yet.
The best method is to use a http header
Adding the meta tag to the head doesn't always work because IE might have determined the mode before it's read. The best way to make sure IE always uses standards mode is to use a custom http header.
Header:
name: X-UA-Compatible
value: IE=edge
For example in a .NET application you could put this in the web.config file.
<system.webServer>
<httpProtocol>
<customHeaders>
<add name="X-UA-Compatible" value="IE=edge" />
</customHeaders>
</httpProtocol>
</system.webServer>
Use unlist
with use.names = FALSE
argument.
unlist(myList, use.names=FALSE)
1) gitdir=$(git rev-parse --git-dir);
2) scp -p -P 29418 <username>@gerrit.xyz.se:hooks/commit-msg ${gitdir}/hooks/
a) I don't know how to execute step 1 in windows so skipped it and used hardcoded path in step 2 scp -p -P 29418 <username>@gerrit.xyz.se:hooks/commit-msg .git/hooks/
b) In case you get below error, manually create "hooks" directory in .git folder
protocol error: expected control record
c) if you have submodule let's say "XX" then you need to repeat step 2 there as well and this time replace ${gitdir} with that submodules path
d) In case scp is not recognized by windows give full path of scp
"C:\Program Files\Git\usr\bin\scp.exe"
e) .git folder is present in your project repo and it's hidden folder
According to an article on Medium, this will work:
install --upgrade pandas==1.0.0rc0
Other way is with:
np.vectorize(lambda x: 6 <= x <= 10)(a)
which returns:
array([False, False, False, True, True, True, False, False, False])
It is sometimes useful for masking time series, vectors, etc.
The error you are getting is either because you are doing TO_DATE
on a column that's already a date, and you're using a format mask that is different to your nls_date_format
parameter[1] or because the event_occurrence column contains data that isn't a number.
You need to a) correct your query so that it's not using TO_DATE on the date column, and b) correct your data, if event_occurrence is supposed to be just numbers.
And fix the datatype of that column to make sure you can only store numbers.
[1] What Oracle does when you do: TO_DATE(date_column, non_default_format_mask)
is:
TO_DATE(TO_CHAR(date_column, nls_date_format), non_default_format_mask)
Generally, the default nls_date_format
parameter is set to dd-MON-yy
, so in your query, what is likely to be happening is your date column is converted to a string in the format dd-MON-yy, and you're then turning it back to a date using the format MMDD. The string is not in this format, so you get an error.
np.random.uniform
fits your use case:
sampl = np.random.uniform(low=0.5, high=13.3, size=(50,))
Update Oct 2019:
While the syntax is still supported, it looks like the API changed with NumPy 1.17 to support greater control over the random number generator. Going forward the API has changed and you should look at https://docs.scipy.org/doc/numpy/reference/random/generated/numpy.random.Generator.uniform.html
The enhancement proposal is here: https://numpy.org/neps/nep-0019-rng-policy.html
Using Python 2, calling .lower()
on each string or Unicode object...
string1.lower() == string2.lower()
...will work most of the time, but indeed doesn't work in the situations @tchrist has described.
Assume we have a file called unicode.txt
containing the two strings S?s?f??
and S?S?F?S
. With Python 2:
>>> utf8_bytes = open("unicode.txt", 'r').read()
>>> print repr(utf8_bytes)
'\xce\xa3\xce\xaf\xcf\x83\xcf\x85\xcf\x86\xce\xbf\xcf\x82\n\xce\xa3\xce\x8a\xce\xa3\xce\xa5\xce\xa6\xce\x9f\xce\xa3\n'
>>> u = utf8_bytes.decode('utf8')
>>> print u
S?s?f??
S?S?F?S
>>> first, second = u.splitlines()
>>> print first.lower()
s?s?f??
>>> print second.lower()
s?s?f?s
>>> first.lower() == second.lower()
False
>>> first.upper() == second.upper()
True
The S character has two lowercase forms, ? and s, and .lower()
won't help compare them case-insensitively.
However, as of Python 3, all three forms will resolve to ?, and calling lower() on both strings will work correctly:
>>> s = open('unicode.txt', encoding='utf8').read()
>>> print(s)
S?s?f??
S?S?F?S
>>> first, second = s.splitlines()
>>> print(first.lower())
s?s?f??
>>> print(second.lower())
s?s?f??
>>> first.lower() == second.lower()
True
>>> first.upper() == second.upper()
True
So if you care about edge-cases like the three sigmas in Greek, use Python 3.
(For reference, Python 2.7.3 and Python 3.3.0b1 are shown in the interpreter printouts above.)
i had this problem yesterday. can you folow the local path in windows explorer?
(C:\users\..\AndroidStudioProjects\SharedPreferencesDemoProject\SharedPreferencesDemo\build\apk\)
i had to manually create the 'apk' directory in '\build', then the problem was fixed
JavaScript is an object-oriented scripting language that allows you to create dynamic HTML pages, allowing you to process input data and maintain data, usually within the browser.
Java is a programming language, core set of libraries, and virtual machine platform that allows you to create compiled programs that run on nearly every platform, without distribution of source code in its raw form or recompilation.
While the two have similar names, they are really two completely different programming languages/models/platforms, and are used to solve completely different sets of problems.
Also, this is directly from the Wikipedia Javascript article:
A common misconception is that JavaScript is similar or closely related to Java; this is not so. Both have a C-like syntax, are object-oriented, are typically sandboxed and are widely used in client-side Web applications, but the similarities end there. Java has static typing; JavaScript's typing is dynamic (meaning a variable can hold an object of any type and cannot be restricted). Java is loaded from compiled bytecode; JavaScript is loaded as human-readable code. C is their last common ancestor language.
Since many browsers block popups by default and popups are really ugly, I recommend using lightbox or thickbox.
They are prettier and are not popups. They are extra HTML markups that are appended to your document's body with the appropriate CSS content.
I have faced the same issue and this is what I did to resolve it:
In the WebApi service, inside Global.asax I have written the following code:
Sub Application_BeginRequest()
Dim currentRequest = HttpContext.Current.Request
Dim currentResponse = HttpContext.Current.Response
Dim currentOriginValue As String = String.Empty
Dim currentHostValue As String = String.Empty
Dim currentRequestOrigin = currentRequest.Headers("Origin")
Dim currentRequestHost = currentRequest.Headers("Host")
Dim currentRequestHeaders = currentRequest.Headers("Access-Control-Request-Headers")
Dim currentRequestMethod = currentRequest.Headers("Access-Control-Request-Method")
If currentRequestOrigin IsNot Nothing Then
currentOriginValue = currentRequestOrigin
End If
If currentRequest.Path.ToLower().IndexOf("token") > -1 Or Request.HttpMethod = "OPTIONS" Then
currentResponse.Headers.Remove("Access-Control-Allow-Origin")
currentResponse.AppendHeader("Access-Control-Allow-Origin", "*")
End If
For Each key In Request.Headers.AllKeys
If key = "Origin" AndAlso Request.HttpMethod = "OPTIONS" Then
currentResponse.AppendHeader("Access-Control-Allow-Credentials", "true")
currentResponse.AppendHeader("Access-Control-Allow-Methods", currentRequestMethod)
currentResponse.AppendHeader("Access-Control-Allow-Headers", If(currentRequestHeaders, "GET,POST,PUT,DELETE,OPTIONS"))
currentResponse.StatusCode = 200
currentResponse.End()
End If
Next
End Sub
Here this code only allows pre-flight and token request to add "Access-Control-Allow-Origin" in the response otherwise I am not adding it.
Here is my blog about the implementation: https://ibhowmick.wordpress.com/2018/09/21/cross-domain-token-based-authentication-with-web-api2-and-jquery-angular-5-angular-6/
There is no concept of folders or directories in S3. You can create file names like "abc/xys/uvw/123.jpg"
, which many S3 access tools like S3Fox
show like a directory structure, but it's actually just a single file in a bucket.
I solve it by close safari inspector. Refer to my post. I also found sound sometimes when I run my app for testing, then I open safari with auto inspector on, after this, I do some action in my app then this issue triggered.
Mallocs and frees need to be paired up.
malloc grabbed a chunk of memory big enough for Person.
When you free you tell malloc the piece of memory starting "here" is no longer needed, it knows how much it allocated and frees it.
Whether you call
free(testPerson)
or
free(testPerson->firstName)
all that free() actually receives is an address, the same address, it can't tell which you called. Your code is much clearer if you use free(testPerson) though - it clearly matches up the with malloc.
On API >= 11, you can use:
wv.getSettings().setBuiltInZoomControls(true);
wv.getSettings().setDisplayZoomControls(false);
As per the SDK:
public void setDisplayZoomControls (boolean enabled)
Since: API Level 11
Sets whether the on screen zoom buttons are used. A combination of built in zoom controls enabled and on screen zoom controls disabled allows for pinch to zoom to work without the on screen controls
You could make it more readable and more efficient:
string oldValue = valueFieldValue.ToString();
string newValue = value.ToString();
int index = listofelements.IndexOf(oldValue);
if(index != -1)
listofelements[index] = newValue;
This asks only once for the index. Your approach uses Contains
first which needs to loop all items(in the worst case), then you're using IndexOf
which needs to enumerate the items again .
There's a native GUI for Windows:
Or Run resmon.exe
,
or from Task Manager's performance tab.
I'm doing this on my raspberry pi from the command line by running:
for i in *;do omxplayer "$i";done
You can create a .a
file using the ar
utility, like so:
ar crf lib/libHeader.a header.o
lib
is a directory that contains all your libraries. it is good practice to organise your code this way and separate the code and the object files. Having everything in one directory generally looks ugly. The above line creates libHeader.a
in the directory lib
. So, in your current directory, do:
mkdir lib
Then run the above ar
command.
When linking all libraries, you can do it like so:
g++ test.o -L./lib -lHeader -o test
The -L
flag will get g++
to add the lib/
directory to the path. This way, g++
knows what directory to search when looking for libHeader
. -llibHeader
flags the specific library to link.
where test.o is created like so:
g++ -c test.cpp -o test.o
I have this piece of code i hope it may help u.
int numRows = dgbDatos.Rows.Count;
for (int i = 0; i < numRows; i++)
{
try
{
int max = dgbDatos.Rows.Count - 1;
dgbDatos.Rows.Remove(dgbDatos.Rows[max]);
}
catch (Exception exe)
{
MessageBox.Show("You can´t delete A row " + exe, "WTF",
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
For IIS 8 I did basically the same thing as Monic. Im running my application as its own app pool on an x64 machine 1.In DCOMCNFG, right click on the My Computer and select properties.
2.Choose the COM Securities tab.
3.In Access Permissions, click Edit Defaults and add iis apppool\myapp to it and give it Allow local access permission. Do the same for iis apppool\myapp
4.In launch and Activation Permissions, click Edit Defaults and add iis apppool\myapp to it and give it Local launch and Local Activation permission. Do the same for iis apppool\myapp.
additionally I had to make the folders outlined under C:\Windows\SysWOW64\config\systemprofile\Desktop and give read \ write permissions to iis apppool\myapp also
I needed to find the position of an element inside a ListView and used this snippet that works kind of like .offset
:
const UIManager = require('NativeModules').UIManager;
const handle = React.findNodeHandle(this.refs.myElement);
UIManager.measureLayoutRelativeToParent(
handle,
(e) => {console.error(e)},
(x, y, w, h) => {
console.log('offset', x, y, w, h);
});
This assumes I had a ref='myElement'
on my component.
You can use the stringr
library:
library('stringr')
a <- runif(10)
b <- letters[1:10]
c <- c(rep('A-B', 4), rep('A_B', 6))
data <- data.frame(a, b, c)
data
# a b c
# 1 0.19426707 a A-B
# 2 0.12902673 b A-B
# 3 0.78324955 c A-B
# 4 0.06469028 d A-B
# 5 0.34752264 e A_C
# 6 0.55313288 f A_C
# 7 0.31264280 g A_C
# 8 0.33759921 h A_C
# 9 0.72322599 i A_C
# 10 0.25223075 j A_C
data$c <- str_replace_all(data$c, '_', '-')
data
# a b c
# 1 0.19426707 a A-B
# 2 0.12902673 b A-B
# 3 0.78324955 c A-B
# 4 0.06469028 d A-B
# 5 0.34752264 e A-C
# 6 0.55313288 f A-C
# 7 0.31264280 g A-C
# 8 0.33759921 h A-C
# 9 0.72322599 i A-C
# 10 0.25223075 j A-C
Note that this does change factored variables into character.
All these functions for adding date are wrong. You are passing the wrong month to the Date function. More information about the problem : http://www.domdigger.com/blog/?p=9
On Ubuntu 12
you might try to install the vim-gnome
package:
sudo apt-get install vim-gnome
I tried it, because vim --version
told me that it would have the flag xterm_clipboard disabled (indicated by - ), which is needed in order to use the clipboard functionality.
-> installing the vim-gnome package on Ubuntu 12 also installed a console based version of vim, that has this option enabled (indicated by a + before the xterm_clipboard flag)
On Arch Linux
you may install vim-clipboard
for the same reason.
If you run neovim then you should install xclip
(as explained by help clipboard-tool
)
You could try adding this to your environment variables:
PYTHONHTTPSVERIFY=0
Note that this will disable all HTTPS verification so is a bit of a sledgehammer approach, however if verification isn't required it may be an effective solution.
Just change filter to omitBy
const data = { aaa: 111, abb: 222, bbb: 333 };_x000D_
const result = _.omitBy(data, (value, key) => !key.startsWith("a"));_x000D_
console.log(result);
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>
_x000D_
Use the util namespace, you will be able to register the list as a bean in your application context. You can then reuse the list to inject it in other bean definitions.
I faced same issue on x86, windows 7;
Solution was the .npmrc file at C:\Users{USERNAME}... change the prefix so that it reads "prefix=${APPDATA}\npm"... Thanks to this website for help in resolving it
Try this RegEx: Matching special charecters which we use in paragraphs and alphabets
Javascript : /^[a-zA-Z]+(([\'\,\.\-_ \/)(:][a-zA-Z_ ])?[a-zA-Z_ .]*)*$/.test(str)
.test(str) returns boolean value if matched true and not matched false
c# : ^[a-zA-Z]+(([\'\,\.\-_ \/)(:][a-zA-Z_ ])?[a-zA-Z_ .]*)*$
This has been fully answered here.
See Oracle's docs on SELECT to see how subquery factoring works, and Mark's example:
WITH employee AS (SELECT * FROM Employees)
SELECT * FROM employee WHERE ID < 20
UNION ALL
SELECT * FROM employee WHERE Sex = 'M'
You can simulate pointers to instantiated objects to some degree:
class pointer {
var $child;
function pointer(&$child) {
$this->child = $child;
}
public function __call($name, $arguments) {
return call_user_func_array(
array($this->child, $name), $arguments);
}
}
Use like this:
$a = new ClassA();
$p = new pointer($a);
If you pass $p around, it will behave like a C++ pointer regarding method calls (you can't touch object variables directly, but that's evil anyways :) ).
If you are checking if an instance of a custom class or struct is contained in an array, you'll need to implement the Equatable protocol before you can use .contains(myObject).
For example:
struct Cup: Equatable {
let filled:Bool
}
static func ==(lhs:Cup, rhs:Cup) -> Bool { // Implement Equatable
return lhs.filled == rhs.filled
}
then you can do:
cupArray.contains(myCup)
Tip: The == override should be at the global level, not within your class/struct
At the beginning of stored procedure one should put SET XACT_ABORT ON to instruct Sql Server to automatically rollback transaction in case of error. If ommited or set to OFF one needs to test @@ERROR after each statement or use TRY ... CATCH rollback block.
Firstly you need to setup a media streaming server. You can use Wowza, red5 or nginx-rtmp-module. Read their documentation and setup on OS you want. All the engine are support HLS (Http Live Stream protocol that was developed by Apple). You should read documentation for config. Example with nginx-rtmp-module:
rtmp {
server {
listen 1935; # Listen on standard RTMP port
chunk_size 4000;
application show {
live on;
# Turn on HLS
hls on;
hls_path /mnt/hls/;
hls_fragment 3;
hls_playlist_length 60;
# disable consuming the stream from nginx as rtmp
deny play all;
}
}
}
server {
listen 8080;
location /hls {
# Disable cache
add_header Cache-Control no-cache;
# CORS setup
add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
add_header 'Access-Control-Allow-Headers' 'Range';
# allow CORS preflight requests
if ($request_method = 'OPTIONS') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Headers' 'Range';
add_header 'Access-Control-Max-Age' 1728000;
add_header 'Content-Type' 'text/plain charset=UTF-8';
add_header 'Content-Length' 0;
return 204;
}
types {
application/vnd.apple.mpegurl m3u8;
video/mp2t ts;
}
root /mnt/;
}
}
After server was setup and configuration successful. you must use some rtmp encoder software (OBS, wirecast ...) for start streaming like youtube or twitchtv.
In client side (browser in your case) you can use Videojs or JWplayer to play video for end user. You can do something like below for Videojs:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Live Streaming</title>
<link href="//vjs.zencdn.net/5.8/video-js.min.css" rel="stylesheet">
<script src="//vjs.zencdn.net/5.8/video.min.js"></script>
</head>
<body>
<video id="player" class="video-js vjs-default-skin" height="360" width="640" controls preload="none">
<source src="http://localhost:8080/hls/stream.m3u8" type="application/x-mpegURL" />
</video>
<script>
var player = videojs('#player');
</script>
</body>
</html>
You don't need to add others plugin like flash (because we use HLS not rtmp). This player can work well cross browser with out flash.
I had a similar issue. I resolved it by changing
<basicHttpBinding>
to
<basicHttpsBinding>
and also changed my URL to use https:// instead of http://.
Also in <endpoint> node, change
binding="basicHttpBinding"
to
binding="basicHttpsBinding"
This worked.
You can also use below just simple to check:
If startDate <> Nothing Then
your logic
End If
It will check that the startDate variable of DateTime datatype is null or not.
The answer provided by Joe Stefanelli is already correct.
SELECT name FROM (SELECT name FROM agentinformation) as a
We need to make an alias of the subquery because a query needs a table object which we will get from making an alias for the subquery. Conceptually, the subquery results are substituted into the outer query. As we need a table object in the outer query, we need to make an alias of the inner query.
Statements that include a subquery usually take one of these forms:
Check for more subquery rules and subquery types.
More examples of Nested Subqueries.
IN / NOT IN – This operator takes the output of the inner query after the inner query gets executed which can be zero or more values and sends it to the outer query. The outer query then fetches all the matching [IN operator] or non matching [NOT IN operator] rows.
ANY – [>ANY or ANY operator takes the list of values produced by the inner query and fetches all the values which are greater than the minimum value of the list. The
e.g. >ANY(100,200,300), the ANY operator will fetch all the values greater than 100.
e.g. >ALL(100,200,300), the ALL operator will fetch all the values greater than 300.
This page on the official mongodb site addresses exactly this question:
When we display our list of stories, we'll need to show the name of the user who posted the story. If we were using a relational database, we could perform a join on users and stores, and get all our objects in a single query. But MongoDB does not support joins and so, at times, requires bit of denormalization. Here, this means caching the 'username' attribute.
Relational purists may be feeling uneasy already, as if we were violating some universal law. But let’s bear in mind that MongoDB collections are not equivalent to relational tables; each serves a unique design objective. A normalized table provides an atomic, isolated chunk of data. A document, however, more closely represents an object as a whole. In the case of a social news site, it can be argued that a username is intrinsic to the story being posted.
Are you just looking to verify that the file is of a given extension? You can simplify what you are trying to do with something like this:
(.*?)\.(jpg|gif|doc|pdf)$
Then, when you call IsMatch() make sure to pass RegexOptions.IgnoreCase as your second parameter. There is no reason to have to list out the variations for casing.
Edit: As Dario mentions, this is not going to work for the RegularExpressionValidator, as it does not support casing options.
I just wanted to test how Union
works with the default comparer on overlapping collections of reference type objects.
My object is:
class MyInt
{
public int val;
public override string ToString()
{
return val.ToString();
}
}
My test code is:
MyInt[] myInts1 = new MyInt[10];
MyInt[] myInts2 = new MyInt[10];
int overlapFrom = 4;
Console.WriteLine("overlapFrom: {0}", overlapFrom);
Action<IEnumerable<MyInt>, string> printMyInts = (myInts, myIntsName) => Console.WriteLine("{2} ({0}): {1}", myInts.Count(), string.Join(" ", myInts), myIntsName);
for (int i = 0; i < myInts1.Length; i++)
myInts1[i] = new MyInt { val = i };
printMyInts(myInts1, nameof(myInts1));
int j = 0;
for (; j + overlapFrom < myInts1.Length; j++)
myInts2[j] = myInts1[j + overlapFrom];
for (; j < myInts2.Length; j++)
myInts2[j] = new MyInt { val = j + overlapFrom };
printMyInts(myInts2, nameof(myInts2));
IEnumerable<MyInt> myUnion = myInts1.Union(myInts2);
printMyInts(myUnion, nameof(myUnion));
for (int i = 0; i < myInts2.Length; i++)
myInts2[i].val += 10;
printMyInts(myInts2, nameof(myInts2));
printMyInts(myUnion, nameof(myUnion));
for (int i = 0; i < myInts1.Length; i++)
myInts1[i].val = i;
printMyInts(myInts1, nameof(myInts1));
printMyInts(myUnion, nameof(myUnion));
The output is:
overlapFrom: 4
myInts1 (10): 0 1 2 3 4 5 6 7 8 9
myInts2 (10): 4 5 6 7 8 9 10 11 12 13
myUnion (14): 0 1 2 3 4 5 6 7 8 9 10 11 12 13
myInts2 (10): 14 15 16 17 18 19 20 21 22 23
myUnion (14): 0 1 2 3 14 15 16 17 18 19 20 21 22 23
myInts1 (10): 0 1 2 3 4 5 6 7 8 9
myUnion (14): 0 1 2 3 4 5 6 7 8 9 20 21 22 23
So, everything works fine.
myDivObj = document.getElementById("myDiv");
if ( myDivObj ) {
alert ( myDivObj.innerHTML );
}else{
alert ( "Alien Found" );
}
Above code will show the innerHTML, i.e if you have used html tags inside div then it will show even those too. probably this is not what you expected. So another solution is to use: innerText / textContent property [ thanx to bobince, see his comment ]
function showDivText(){
divObj = document.getElementById("myDiv");
if ( divObj ){
if ( divObj.textContent ){ // FF
alert ( divObj.textContent );
}else{ // IE
alert ( divObj.innerText ); //alert ( divObj.innerHTML );
}
}
}
Had the same problem. The solution is to add a \
at the end of %ANT_HOME%\bin
so it became %ANT_HOME%\bin\
Worked for me. (Should be system var)
I was getting the same error message but had a different issue. Posting for others that are stuck on same.
I ported the get
, post
, put
, delete
functions to new router file while refactoring, and forgot to edit the paths. Example:
Incorrect:
//server.js
app.use('/blog-posts', blogPostsRouter);
//routers/blogPostsRouter.js
router.get('/blog-posts', (req, res) => {
res.json(BlogPosts.get());
});
Correct:
//server.js
app.use('/blog-posts', blogPostsRouter);
//routers/blogPostsRouter.js
router.get('/', (req, res) => {
res.json(BlogPosts.get());
});
Took a while to spot, as the error had me checking syntax where I might have been wrapping an argument in an object or where I missed the module.exports = router;
One thing that you could do would be to modify the catalina.sh (Unix based) or the catalina.bat (windows based).
Within each of the scripts you can set certain variables which only processes created under the shell will inherit. So for catalina.sh, use the following line:
export JAVA_HOME="intented java home"
And for windows use
set JAVA_HOME="intented java home"
var var1 = 1, var2 = 1, var3 = 1;
In this case var
keyword is applicable to all the three variables.
var var1 = 1,
var2 = 1,
var3 = 1;
which is not equivalent to this:
var var1 = var2 = var3 = 1;
In this case behind the screens var
keyword is only applicable to var1
due to variable hoisting and rest of the expression is evaluated normally so the variables var2, var3
are becoming globals
Javascript treats this code in this order:
/*
var 1 is local to the particular scope because of var keyword
var2 and var3 will become globals because they've used without var keyword
*/
var var1; //only variable declarations will be hoisted.
var1= var2= var3 = 1;
The difference between this two tables ItemBack1
and #ItemBack1
is that the first on is persistent (permanent) where as the other is temporary.
Now if take a look at your question again
Is it necessary to Use # for creating temp table in sql server?
The answer is Yes, because without this preceding #
the table will not be a temporary table, it will be independent of all sessions and scopes.
In MySQL TRUE
and FALSE
are synonyms for TINYINT(1)
.
So therefore its basically the same thing, but MySQL is converting to 0/1 - so just use a TINYINT
if that's easier for you
P.S.
The performance is likely to be so minuscule (if at all), that if you need to ask on StackOverflow, then it won't affect your database :)
Or use a cast with split to uniform type of str
unique, counts = numpy.unique(str(a).split(), return_counts=True)
Usually there are 2 types of seed data required.
In my experience I was always coming across the need for these two types of data. So I put together a small gem that extends Rails' seeds and lets you add multiple common seed files under db/seeds/ and any environmental seed data under db/seeds/ENV for example db/seeds/development.
I have found this approach is enough to give my seed data some structure and gives me the power to setup my development or staging environment in a known state just by running:
rake db:setup
Fixtures are fragile and flakey to maintain, as are regular sql dumps.
I can't guarantee that this will work for every new iPad Pro which will be released but this works pretty well as of 2019:
@media only screen and (min-width: 1024px) and (max-height: 1366px)
and (-webkit-min-device-pixel-ratio: 1.5) and (hover: none) {
/* ... */
}
You cannot run an ipa file in the simulator because the ipa file is compiled for a phone's ARM architecture, not the simulator's x86 architecture.
However, you can extract an app installed in a local simulator, send it to someone else, and have them copy it to the simulator on their machine.
In terminal, type:
open ~/Library/Application\ Support/iPhone\ Simulator/*/Applications
This will open all the applications folders of all the simulators you have installed. Each of the applications will be in a folder with a random hexadecimal name. You can work out which is your application by looking inside each of them. Once you have found out which one you want, right click it and choose "Compress ..." and it will make a zip file that you can easily copy to another computer and unzip to a similar location.
Some cases you might want to kill all the process running in a specific port. For example, if I am running a node app on 3000 port and I want to kill that and start a new one; then I found this command useful.
Find the process IDs running on TCP port 3000 and kill it
kill -9 `lsof -i TCP:3000 | awk '/LISTEN/{print $2}'`
The solution is the /Y
switch:
xcopy "C:\Users\ADMIN\Desktop\*.*" "D:\Backup\" /K /D /H /Y
I also found that JQuery plugin that is easy to include in your Angular App (also with bower :D ) and which check all possible country codes with their respective masks : intl-tel-input
You can then use the validationScript
option in order to check the validity of the input's value.
if you use NUNIT, you can do something like this:
Assert.Throws<ExpectedException>(() => methodToTest());
It is also possible to store the thrown exception in order to validate it further:
ExpectedException ex = Assert.Throws<ExpectedException>(() => methodToTest());
Assert.AreEqual( "Expected message text.", ex.Message );
Assert.AreEqual( 5, ex.SomeNumber);
Try array_merge.
$array1 = array('Item 1');
$array2 = array('Item 2');
$array3 = array_merge($array1, $array2);
I think its because you are not assigning a key to either, so they both have key of 0, and the + does not re-index, so its trying to over write it.
This is how you create a borderless (flat) button programmatically without using XML
ContextThemeWrapper myContext = new ContextThemeWrapper(this.getActivity(),
R.style.Widget_AppCompat_Button_Borderless_Colored);
Button myButton = new Button(myContext, null,
R.style.Widget_AppCompat_Button_Borderless_Colored);
Using file
command with the --mime-encoding
option (e.g. file --mime-encoding some_file.txt
) instead of the -I option works on OS X and has the added benefit of omitting the mime type, "text/plain", which you probably don't care about.
From my understanding, router.navigate is used to navigate relatively to current path. For eg : If our current path is abc.com/user, we want to navigate to the url : abc.com/user/10 for this scenario we can use router.navigate .
router.navigateByUrl() is used for absolute path navigation.
ie,
If we need to navigate to entirely different route in that case we can use router.navigateByUrl
For example if we need to navigate from abc.com/user to abc.com/assets, in this case we can use router.navigateByUrl()
Syntax :
router.navigateByUrl(' ---- String ----');
router.navigate([], {relativeTo: route})
In my case @component
was not working because I initialized that class instance by using new <classname>()
.
If we initialize instance by conventional Java way anywhere in code, then spring won't add that component in IOC container.
This is the most concise way I have found, provided the destination is empty. Switch to an empty folder and then:
# Note the period for cwd >>>>>>>>>>>>>>>>>>>>>>>> v
git clone --bare https://your-source-repo/repo.git .
git push --mirror https://your-destination-repo/repo.git
Substitute https://...
for file:///your/repo
etc. as appropriate.
Why not use @media-queries? These are designed for that exact purpose. You can also do this with jQuery, but that's a last resort in my book.
var s = document.createElement("script");
//Check if viewport is smaller than 768 pixels
if(window.innerWidth < 768) {
s.type = "text/javascript";
s.src = "http://www.example.com/public/assets/css1";
}else { //Else we have a larger screen
s.type = "text/javascript";
s.src = "http://www.example.com/public/assets/css2";
}
$(function(){
$("head").append(s); //Inject stylesheet
})
An option is to use the OkHttp client, from Square.
Add the library dependency
In the build.gradle, include this line:
compile 'com.squareup.okhttp:okhttp:x.x.x'
Where x.x.x
is the desired library version.
Set the client
For example, if you want to set a timeout of 60 seconds, do this way:
final OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.setReadTimeout(60, TimeUnit.SECONDS);
okHttpClient.setConnectTimeout(60, TimeUnit.SECONDS);
ps: If your minSdkVersion is greater than 8, you can use TimeUnit.MINUTES
. So, you can simply use:
okHttpClient.setReadTimeout(1, TimeUnit.MINUTES);
okHttpClient.setConnectTimeout(1, TimeUnit.MINUTES);
For more details about the units, see TimeUnit.
If you do not have the pandas and sqlalchemy libraries, import using pip
pip install pandas
pip install sqlalchemy
We can use pandas and sqlalchemy to directly insert into the database
import csv
import pandas as pd
from sqlalchemy import create_engine, types
engine = create_engine('mysql://root:*Enter password here*@localhost/*Enter Databse name here*') # enter your password and database names here
df = pd.read_csv("Excel_file_name.csv",sep=',',quotechar='\'',encoding='utf8') # Replace Excel_file_name with your excel sheet name
df.to_sql('Table_name',con=engine,index=False,if_exists='append') # Replace Table_name with your sql table name
(This is my third answer because I misunderstood what your code was doing in my original, and then made a small but crucial mistake in my second—hopefully three's a charm.
Edits: Since this seems to be a popular answer, I've made a few modifications to improve its implementation over the years—most not too major. This is so if folks use it as template, it will provide an even better basis.
As others have pointed out, your MemoryError
problem is most likely because you're attempting to read the entire contents of huge files into memory and then, on top of that, effectively doubling the amount of memory needed by creating a list of lists of the string values from each line.
Python's memory limits are determined by how much physical ram and virtual memory disk space your computer and operating system have available. Even if you don't use it all up and your program "works", using it may be impractical because it takes too long.
Anyway, the most obvious way to avoid that is to process each file a single line at a time, which means you have to do the processing incrementally.
To accomplish this, a list of running totals for each of the fields is kept. When that is finished, the average value of each field can be calculated by dividing the corresponding total value by the count of total lines read. Once that is done, these averages can be printed out and some written to one of the output files. I've also made a conscious effort to use very descriptive variable names to try to make it understandable.
try:
from itertools import izip_longest
except ImportError: # Python 3
from itertools import zip_longest as izip_longest
GROUP_SIZE = 4
input_file_names = ["A1_B1_100000.txt", "A2_B2_100000.txt", "A1_B2_100000.txt",
"A2_B1_100000.txt"]
file_write = open("average_generations.txt", 'w')
mutation_average = open("mutation_average", 'w') # left in, but nothing written
for file_name in input_file_names:
with open(file_name, 'r') as input_file:
print('processing file: {}'.format(file_name))
totals = []
for count, fields in enumerate((line.split('\t') for line in input_file), 1):
totals = [sum(values) for values in
izip_longest(totals, map(float, fields), fillvalue=0)]
averages = [total/count for total in totals]
for print_counter, average in enumerate(averages):
print(' {:9.4f}'.format(average))
if print_counter % GROUP_SIZE == 0:
file_write.write(str(average)+'\n')
file_write.write('\n')
file_write.close()
mutation_average.close()
you can use awk, for example, cut off 1st,2nd and last 3 columns
awk '{for(i=3;i<=NF-3;i++} print $i}' file
if you have a programing language such as Ruby (1.9+)
$ ruby -F"\t" -ane 'print $F[2..-3].join("\t")' file
Each answer is 5 6 years old, so bit outdated or depreciated. Let's talk in 2020.
simple-node-logger is simple multi-level logger for console, file, and rolling file appenders. Features include:
levels: trace, debug, info, warn, error and fatal levels (plus all and off)
flexible appender/formatters with default to HH:mm:ss.SSS LEVEL message add appenders to send output to console, file, rolling file, etc
change log levels on the fly
domain and category columns
overridable format methods in base appender
stats that track counts of all log statements including warn, error, etc
You can easily use it in any nodejs web application:
// create a stdout console logger
const log = require('simple-node-logger').createSimpleLogger();
or
// create a stdout and file logger
const log = require('simple-node-logger').createSimpleLogger('project.log');
or
// create a custom timestamp format for log statements
const SimpleNodeLogger = require('simple-node-logger'),
opts = {
logFilePath:'mylogfile.log',
timestampFormat:'YYYY-MM-DD HH:mm:ss.SSS'
},
log = SimpleNodeLogger.createSimpleLogger( opts );
or
// create a file only file logger
const log = require('simple-node-logger').createSimpleFileLogger('project.log');
or
// create a rolling file logger based on date/time that fires process events
const opts = {
errorEventName:'error',
logDirectory:'/mylogfiles', // NOTE: folder must exist and be writable...
fileNamePattern:'roll-<DATE>.log',
dateFormat:'YYYY.MM.DD'
};
const log = require('simple-node-logger').createRollingFileLogger( opts );
Messages can be logged by
log.info('this is logged info message')
log.warn('this is logged warn message')//etc..
PLUS POINT: It can send logs to console or socket. You can also append to log levels.
This is the most effective and easy way to handle logs functionality.
If your project contains a RouteConfig.cs file, then you probably need to ignore the route to the root by adding routes.IgnoreRoute("");
in this file.
If it doen't solve your problem, try this :
void Application_BeginRequest(object sender, EventArgs e)
{
if (Request.AppRelativeCurrentExecutionFilePath == "~/")
Response.Redirect("~/index.aspx");
}
Use:
byte[] data = Base64.encode(base64str);
Encoding converts to Base64
You would need to reference commons codec from your project in order for that code to work.
For java8:
import java.util.Base64
Can be as easy as:
var ms = new MemoryStream(imageData);
System.Drawing.Image image = Image.FromStream(ms);
image.Save("c:\\image.jpg");
Testing it out:
byte[] imageData;
// Create the byte array.
var originalImage = Image.FromFile(@"C:\original.jpg");
using (var ms = new MemoryStream())
{
originalImage.Save(ms, ImageFormat.Jpeg);
imageData = ms.ToArray();
}
// Convert back to image.
using (var ms = new MemoryStream(imageData))
{
Image image = Image.FromStream(ms);
image.Save(@"C:\newImage.jpg");
}
SQL Server has no setting to control query timeout in the connection string, and as far as I know this is the same for other major databases. But, this doesn't look like the problem you're seeing: I'd expect to see an exception raised
Error: System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
if there genuinely was a timeout executing the query.
If this does turn out to be a problem, you can change the default timeout for a SQL Server database as a property of the database itself; use SQL Server Manager for this.
Be sure that the query is exactly the same from your Web application as the one you're running directly. Use a profiler to verify this.
In my case it was just that the emulator took 9 minutes to start. Wait until you see the lock icon on the emulator LCD. Or use actual tablet or phone.
Very easy no need create class extends LocationListener 1- Variable
private LocationManager mLocationManager;
private LocationListener mLocationListener;
private static double currentLat =0;
private static double currentLon =0;
2- onStartService()
@Override public void onStartService() {
addListenerLocation();
}
3- Method addListenerLocation()
private void addListenerLocation() {
mLocationManager = (LocationManager)
getSystemService(Context.LOCATION_SERVICE);
mLocationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
currentLat = location.getLatitude();
currentLon = location.getLongitude();
Toast.makeText(getBaseContext(),currentLat+"-"+currentLon, Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
Location lastKnownLocation = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if(lastKnownLocation!=null){
currentLat = lastKnownLocation.getLatitude();
currentLon = lastKnownLocation.getLongitude();
}
}
@Override
public void onProviderDisabled(String provider) {
}
};
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 500, 10, mLocationListener);
}
4- onDestroy()
@Override
public void onDestroy() {
super.onDestroy();
mLocationManager.removeUpdates(mLocationListener);
}
Here is another method that I find slightly more elegant/simple:
echo date('Y-m-d-H:i:s.').preg_replace("/^.*\./i","", microtime(true));
use DateTime.Now
try this:
DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")
UPDATE:
Post.find().sort({'updatedAt': -1}).all((posts) => {
// do something with the array of posts
});
Try:
Post.find().sort([['updatedAt', 'descending']]).all((posts) => {
// do something with the array of posts
});
even shorter if you can lose the yearStart value:
var yearStart = 2000;
var yearEnd = 2040;
var arr = [];
while(yearStart < yearEnd+1){
arr.push(yearStart++);
}
UPDATE: If you can use the ES6 syntax you can do it the way proposed here:
let yearStart = 2000;
let yearEnd = 2040;
let years = Array(yearEnd-yearStart+1)
.fill()
.map(() => yearStart++);
UPDATE: this was solved by rebooting but there was another error when running app. This time tomcat woudnt start. To solve this (bugs with latest apache and netbeans versions) follow: Error starting Tomcat from NetBeans - '127.0.0.1*' is not recognized as an internal or external command
Just came across this message but in c# code. Not sure if it's relevant (exactly the same error message though).
I was debugging the code with breakpoints and expanded some collections through private members while debugger was at a breakpoint. Having re-run the code without digging through structures made the error message go away. It seems like the act of looking into private lazy-loaded collections has made NHibernate load things that were not supposed to be loaded at that time (because they were in private members).
The code itself is wrapped in a fairly complicated transaction that can update large number of records and many dependencies as part of that transaction (import process).
Hopefully a clue to anyone else who comes across the issue.
I suggest to use the inherits
helper that comes with the standard util
module: http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor
There is an example of how to use it on the linked page.
I found a quick and easy solution to what I wanted using json_normalize()
included in pandas 1.01
.
from urllib2 import Request, urlopen
import json
import pandas as pd
path1 = '42.974049,-81.205203|42.974298,-81.195755'
request=Request('http://maps.googleapis.com/maps/api/elevation/json?locations='+path1+'&sensor=false')
response = urlopen(request)
elevations = response.read()
data = json.loads(elevations)
df = pd.json_normalize(data['results'])
This gives a nice flattened dataframe with the json data that I got from the Google Maps API.
$record = '123';
$this->db->distinct();
$this->db->select('accessid');
$this->db->where('record', $record);
$query = $this->db->get('accesslog');
then
$query->num_rows();
should go a long way towards it.
I had this issue with npm v1.1.4
(and node v0.6.12
), which are the Ubuntu 12.04
repository versions.
It looks like that version of npm
isn't supported any more, updating node (and npm with it) resolved the issue.
First, uninstall the outdated version (optional, but I think this fixed an issue I was having with global modules not being pathed in).
sudo apt-get purge nodejs npm
Then enable nodesource's repo and install:
curl -sL https://deb.nodesource.com/setup | sudo bash -
sudo apt-get install -y nodejs
Note - the previous advice was to use Chris Lea's repo, he's now migrated that to nodesource, see:
From: here
Just as a normal js object:
let myhash: IHash = {};
myhash["somestring"] = "value"; //set
let value = myhash["somestring"]; //get
There are two things you're doing with [indexer: string] : string
You can make a general dictionary with explicitly typed fields by using [key: string]: any;
e.g. age
must be number
, while name
must be a string - both are required. Any implicit field can be any type of value.
As an alternative, there is a Map
class:
let map = new Map<object, string>();
let key = new Object();
map.set(key, "value");
map.get(key); // return "value"
This allows you have any Object instance (not just number/string) as the key.
Although its relatively new so you may have to polyfill it if you target old systems.
In my case the solution was to remove the attribute
validationQuery="select 1"
from the (Derby DB) resource tag.
Running from inside Emacs' IPython-shell and breakpoint set via pdb.set_trace() should work.
Checked with python-mode.el, M-x ipython RET etc.
First of all you missed ScriptService attribute to add in webservice.
[ScriptService]
After then try following method to call webservice via JSON.
var webAddr = "http://Domain/VBRService.asmx/callJson"; var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr); httpWebRequest.ContentType = "application/json; charset=utf-8"; httpWebRequest.Method = "POST"; using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream())) { string json = "{\"x\":\"true\"}"; streamWriter.Write(json); streamWriter.Flush(); } var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse(); using (var streamReader = new StreamReader(httpResponse.GetResponseStream())) { var result = streamReader.ReadToEnd(); return result; }
for everything related to Python's style guide: i'd recommend you read PEP8.
To answer your question:
Function names should be lowercase, with words separated by underscores as necessary to improve readability.
If you need the output in a file you can use a redirect:
curl https://vi.stackexchange.com/ -vs >curl-output.txt 2>&1
Please be sure not to flip the >curl-output.txt
and 2>&1
, which will not work due to bash's redirection behavior.
I am trying to check if a key exist in an array in angular way and landed here on this question. In my Angularjs 1.4 ternary operator worked like below
{{ CONDITION ? TRUE : FALSE }}
hence for the array key exist i did a simple JS check
Solution 1 : {{ array['key'] !== undefined ? array['key'] : 'n/a' }}
Solution 2 : {{ "key" in array ? array['key'] : 'n/a' }}
I've ran into the same problem. The question here is that play-java-jpa artifact (javaJpa key in the build.sbt file) depends on a different version of the spec (version 2.0 -> "org.hibernate.javax.persistence" % "hibernate-jpa-2.0-api" % "1.0.1.Final")
.
When you added hibernate-entitymanager 4.3 this brought the newer spec (2.1) and a different factory provider for the entitymanager. Basically you ended up having both jars in the classpath as transitive dependencies.
Edit your build.sbt file like this and it will temporarily fix you problem until play releases a new version of the jpa plugin for the newer api dependency.
libraryDependencies ++= Seq(
javaJdbc,
javaJpa.exclude("org.hibernate.javax.persistence", "hibernate-jpa-2.0-api"),
"org.hibernate" % "hibernate-entitymanager" % "4.3.0.Final"
)
This is for play 2.2.x
. In previous versions there were some differences in the build files.
In my case, i have to set the theme on the runtime in java based on some conditions. So I created one theme in style (similar to other answers):
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="Theme.Transparent" parent="android:Theme">
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:windowContentOverlay">@null</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowIsFloating">true</item>
<item name="android:backgroundDimEnabled">false</item>
</style>
</resources>
Then in Java I applied it to my activity:
@Override
protected void onCreate(Bundle savedInstanceState) {
String email = getIntent().getStringExtra(AppConstants.REGISTER_EMAIL_INTENT_KEY);
if (email != null && !email.isEmpty()) {
// We have the valid email ID, no need to take it from user,
// prepare transparent activity just to perform bg tasks required for login
setTheme(R.style.Theme_Transparent);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
} else
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dummy);
}
Remember one Important point here: You must call the setTheme()
function before super.onCreate(savedInstanceState);
. I missed this point and stucked for 2 hours, thinking why my theme is not reflected at run time.
To exit Scale Mode, press:
Right Ctrl (Host Key) + c
Note that your (Host Key) may be different from Right Ctrl. To check the current binding, go to VirtualBox Preferences > Input > Virtual Machine > Host Key Combination
.
I spent many sad days trying to come up with a way to do this for C++17, which deprecated code_cvt
facets, and this is the best I was able to come up with by combining code from a few different sources:
setlocale( LC_ALL, "en_US.UTF-8" ); //Invoked in main()
std::string wideToMultiByte( std::wstring const & wideString )
{
std::string ret;
std::string buff( MB_CUR_MAX, '\0' );
for ( wchar_t const & wc : wideString )
{
int mbCharLen = std::wctomb( &buff[ 0 ], wc );
if ( mbCharLen < 1 ) { break; }
for ( int i = 0; i < mbCharLen; ++i )
{
ret += buff[ i ];
}
}
return ret;
}
std::wstring multiByteToWide( std::string const & multiByteString )
{
std::wstring ws( multiByteString.size(), L' ' );
ws.resize(
std::mbstowcs( &ws[ 0 ],
multiByteString.c_str(),
multiByteString.size() ) );
return ws;
}
I tested this code on Windows 10, and at least for my purposes, it seems to work fine. Please don't lynch me if this doesn't consider some crazy edge cases that you might need to handle, I'm sure someone with more experience can improve on this! :-)
Also, credit where it's due:
Python does not have any private variables like C++ or Java does. You could access any member variable at any time if wanted, too. However, you don't need private variables in Python, because in Python it is not bad to expose your classes member variables. If you have the need to encapsulate a member variable, you can do this by using "@property" later on without breaking existing client code.
In python the single underscore "_" is used to indicate, that a method or variable is not considered as part of the public api of a class and that this part of the api could change between different versions. You can use these methods/variables, but your code could break, if you use a newer version of this class.
The double underscore "__" does not mean a "private variable". You use it to define variables which are "class local" and which can not be easily overidden by subclasses. It mangles the variables name.
For example:
class A(object):
def __init__(self):
self.__foobar = None # will be automatically mangled to self._A__foobar
class B(A):
def __init__(self):
self.__foobar = 1 # will be automatically mangled to self._B__foobar
self.__foobar's name is automatically mangled to self._A__foobar in class A. In class B it is mangled to self._B__foobar. So every subclass can define its own variable __foobar without overriding its parents variable(s). But nothing prevents you from accessing variables beginning with double underscores. However, name-mangling prevents you from calling this variables /methods incidentally.
I strongly recommend to watch Raymond Hettingers talk "Pythons class development toolkit" from Pycon 2013 (should be available on Youtube), which gives a good example why and how you should use @property and "__"-instance variables.
If you have exposed public variables and you have the need to encapsulate them, then you can use @property. Therefore you can start with the simplest solution possible. You can leave member variables public unless you have a concrete reason to not do so. Here is an example:
class Distance:
def __init__(self, meter):
self.meter = meter
d = Distance(1.0)
print(d.meter)
# prints 1.0
class Distance:
def __init__(self, meter):
# Customer request: Distances must be stored in millimeters.
# Public available internals must be changed.
# This would break client code in C++.
# This is why you never expose public variables in C++ or Java.
# However, this is python.
self.millimeter = meter * 1000
# In python we have @property to the rescue.
@property
def meter(self):
return self.millimeter *0.001
@meter.setter
def meter(self, value):
self.millimeter = meter * 1000
d = Distance(1.0)
print(d.meter)
# prints 1.0
A good reason is for security - this can prevent CSRF attacks because this header cannot be added to the AJAX request cross domain without the consent of the server via CORS.
Only the following headers are allowed cross domain:
- Accept
- Accept-Language
- Content-Language
- Last-Event-ID
- Content-Type
any others cause a "pre-flight" request to be issued in CORS supported browsers.
Without CORS it is not possible to add X-Requested-With
to a cross domain XHR request.
If the server is checking that this header is present, it knows that the request didn't initiate from an attacker's domain attempting to make a request on behalf of the user with JavaScript. This also checks that the request wasn't POSTed from a regular HTML form, of which it is harder to verify it is not cross domain without the use of tokens. (However, checking the Origin
header could be an option in supported browsers, although you will leave old browsers vulnerable.)
You may wish to combine this with a token, because Flash running on Safari on OSX can set this header if there's a redirect step. It appears it also worked on Chrome, but is now remediated. More details here including different versions affected.
OWASP Recommend combining this with an Origin and Referer check:
This defense technique is specifically discussed in section 4.3 of Robust Defenses for Cross-Site Request Forgery. However, bypasses of this defense using Flash were documented as early as 2008 and again as recently as 2015 by Mathias Karlsson to exploit a CSRF flaw in Vimeo. But, we believe that the Flash attack can't spoof the Origin or Referer headers so by checking both of them we believe this combination of checks should prevent Flash bypass CSRF attacks. (NOTE: If anyone can confirm or refute this belief, please let us know so we can update this article)
However, for the reasons already discussed checking Origin can be tricky.
Written a more in depth blog post on CORS, CSRF and X-Requested-With here.
Relative positioning: The element creates its own coordinate axes, at a location offset from the viewport coordinate axis. It is Part of document flow but shifted.
Absolute positioning: An element searches for the nearest available coordinate axes among its parent elements. The element is then positioned by specifying offsets from this coordinate axis. It is removed from document normal flow.
I would recommend using mysqldump and from php use the system command as suggested in the article you found.
You can also use PreviewKeyDown in WPF:
<TextBox PreviewKeyDown="EnterClicked" />
or in C#:
myTextBox.PreviewKeyDown += EnterClicked;
And then in the attached class:
void EnterClicked(object sender, KeyEventArgs e) {
if(e.Key == Key.Return) {
DoSomething();
e.Handled = true;
}
}
<TextBox Controls:TextBoxHelper.Watermark="Watermark"/>
Add mahapps.metro to your project. Add textbox with the above code to the window.
In case this is useful to someone, here is a quick function i built out to replace blank strings with N/A's in lists of lists (python 2).
y = [["1","2",""],["1","4",""]]
def replace_blank_strings_in_lists_of_lists(list_of_lists):
new_list = []
for one_list in list_of_lists:
new_one_list = []
for element in one_list:
if element:
new_one_list.append(element)
else:
new_one_list.append("N/A")
new_list.append(new_one_list)
return new_list
x= replace_blank_strings_in_lists_of_lists(y)
print x
This is useful for posting lists of lists to a mysql database that does not accept blanks for certain fields (fields marked as NN in schema. in my case, this was due to a composite primary key).
SynchronousQueue
( Taken from another question )SynchronousQueue
is more of a handoff, whereas the LinkedBlockingQueue
just allows a single element. The difference being that the put()
call to a SynchronousQueue
will not return until there is a corresponding take()
call, but with a LinkedBlockingQueue
of size 1, the put()
call (to an empty queue) will return immediately. It's essentially the BlockingQueue
implementation for when you don't really want a queue (you don't want to maintain any pending data).
LinkedBlockingQueue
(LinkedList
Implementation but Not Exactly JDK Implementation of LinkedList
It uses static inner class Node to maintain Links between elements )Constructor for LinkedBlockingQueue
public LinkedBlockingQueue(int capacity)
{
if (capacity < = 0) throw new IllegalArgumentException();
this.capacity = capacity;
last = head = new Node< E >(null); // Maintains a underlying linkedlist. ( Use when size is not known )
}
Node class Used to Maintain Links
static class Node<E> {
E item;
Node<E> next;
Node(E x) { item = x; }
}
3 . ArrayBlockingQueue ( Array Implementation )
Constructor for ArrayBlockingQueue
public ArrayBlockingQueue(int capacity, boolean fair)
{
if (capacity < = 0)
throw new IllegalArgumentException();
this.items = new Object[capacity]; // Maintains a underlying array
lock = new ReentrantLock(fair);
notEmpty = lock.newCondition();
notFull = lock.newCondition();
}
IMHO Biggest Difference between ArrayBlockingQueue
and LinkedBlockingQueue
is clear from constructor one has underlying data structure Array and other linkedList.
ArrayBlockingQueue
uses single-lock double condition algorithm and LinkedBlockingQueue
is variant of the "two lock queue" algorithm and it has 2 locks 2 conditions ( takeLock , putLock)
getattr(x, 'y')
is equivalent to x.y
setattr(x, 'y', v)
is equivalent to x.y = v
delattr(x, 'y')
is equivalent to del x.y
/*
public class UserDAO {
public boolean insertUser(UserBean u) {
boolean flag = false;
MySqlConnection msq = new MySqlConnection();
try {
String sql = "insert into regis values(?,?,?,?,?)";
Connection connection = msq.getConnection();
PreparedStatement statement = null;
statement = (PreparedStatement) connection.prepareStatement(sql);
statement.setString(1, u.getname());
statement.setString(2, u.getlname());
statement.setString(3, u.getemail());
statement.setString(4, u.getusername());
statement.setString(5, u.getpasswords());
statement.executeUpdate();
flag = true;
} catch (Exception e) {
} finally {
return flag;
}
}
public String userValidate(UserBean u) {
String login = "";
MySqlConnection msq = new MySqlConnection();
try {
String email = u.getemail();
String Pass = u.getpasswords();
String sql = "SELECT name FROM regis WHERE email=? and passwords=?";
com.mysql.jdbc.Connection connection = msq.getConnection();
com.mysql.jdbc.PreparedStatement statement = null;
ResultSet rs = null;
statement = (com.mysql.jdbc.PreparedStatement) connection.prepareStatement(sql);
statement.setString(1, email);
statement.setString(2, Pass);
rs = statement.executeQuery();
if (rs.next()) {
login = rs.getString("name");
} else {
login = "false";
}
} catch (Exception e) {
} finally {
return login;
}
}
public boolean getmessage(UserBean u) {
boolean flag = false;
MySqlConnection msq = new MySqlConnection();
try {
String sql = "insert into feedback values(?,?)";
Connection connection = msq.getConnection();
PreparedStatement statement = null;
statement = (PreparedStatement) connection.prepareStatement(sql);
statement.setString(1, u.getemail());
statement.setString(2, u.getfeedback());
statement.executeUpdate();
flag = true;
} catch (Exception e) {
} finally {
return flag;
}
}
public boolean insertOrder(cartbean u) {
boolean flag = false;
MySqlConnection msq = new MySqlConnection();
try {
String sql = "insert into cart (product_id, email, Tprice, quantity) values (?,?,2000,?)";
Connection connection = msq.getConnection();
PreparedStatement statement = null;
statement = (PreparedStatement) connection.prepareStatement(sql);
statement.setString(1, u.getpid());
statement.setString(2, u.getemail());
statement.setString(3, u.getquantity());
statement.executeUpdate();
flag = true;
} catch (Exception e) {
System.out.print("hi");
} finally {
return flag;
}
}
}
To get the all selected Items in a CheckedListBox try this:
In this case ths value is a String but it's run with other type of Object:
for (int i = 0; i < myCheckedListBox.Items.Count; i++)
{
if (myCheckedListBox.GetItemChecked(i) == true)
{
MessageBox.Show("This is the value of ceckhed Item " + myCheckedListBox.Items[i].ToString());
}
}
I can think of 2 ways to achieve this:
IFNULL():
The IFNULL() function returns a specified value if the expression is NULL.If the expression is NOT NULL, this function returns the expression.
Syntax:
IFNULL(expression, alt_value)
Example of IFNULL() with your query:
SELECT AVG( price )
FROM(
SELECT *, cume_dist() OVER ( ORDER BY price DESC ) FROM web_price_scan
WHERE listing_Type = 'AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
AND IFNULL( price, 0 ) > ( SELECT AVG( IFNULL( price, 0 ) )* 0.50
FROM ( SELECT *, cume_dist() OVER ( ORDER BY price DESC )
FROM web_price_scan
WHERE listing_Type='AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
) g
WHERE cume_dist < 0.50
)
AND IFNULL( price, 0 ) < ( SELECT AVG( IFNULL( price, 0 ) ) *2
FROM( SELECT *, cume_dist() OVER ( ORDER BY price desc )
FROM web_price_scan
WHERE listing_Type='AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
) d
WHERE cume_dist < 0.50)
)s
HAVING COUNT(*) > 5
COALESCE()
The COALESCE() function returns the first non-null value in a list.
Syntax:
COALESCE(val1, val2, ...., val_n)
Example of COALESCE() with your query:
SELECT AVG( price )
FROM(
SELECT *, cume_dist() OVER ( ORDER BY price DESC ) FROM web_price_scan
WHERE listing_Type = 'AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
AND COALESCE( price, 0 ) > ( SELECT AVG( COALESCE( price, 0 ) )* 0.50
FROM ( SELECT *, cume_dist() OVER ( ORDER BY price DESC )
FROM web_price_scan
WHERE listing_Type='AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
) g
WHERE cume_dist < 0.50
)
AND COALESCE( price, 0 ) < ( SELECT AVG( COALESCE( price, 0 ) ) *2
FROM( SELECT *, cume_dist() OVER ( ORDER BY price desc )
FROM web_price_scan
WHERE listing_Type='AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
) d
WHERE cume_dist < 0.50)
)s
HAVING COUNT(*) > 5
Try PyPDF2.
There is a good tutorial here: https://automatetheboringstuff.com/chapter13/
run npm i moment react-moment --save
you can use this in your component,
import Moment from 'react-moment';
const date = new Date();
<Moment format='MMMM Do YYYY, h:mm:ss a'>{date}</Moment>
if you're on windows, make sure you 'unblock' the lombok.jar before you install it. if you don't do this, it will install but it wont work.
I suggest to use a tick symbol not draw it. Or use webfonts which are free for example: fontello[dot]com You can than replace the tick symbol with a web font glyph.
Lists
ul {padding: 0;}
li {list-style: none}
li:before {
display:inline-block;
vertical-align: top;
line-height: 1em;
width: 1em;
height:1em;
margin-right: 0.3em;
text-align: center;
content: '?';
color: #999;
}
See here: http://jsfiddle.net/hpmW7/3/
Checkboxes
You even have web fonts with tick symbol glyphs and CSS 3 animations. For IE8 you would need to apply a polyfill since it does not understand :checked.
input[type="checkbox"] {
clip: rect(1px, 1px, 1px, 1px);
left: -9999px;
position: absolute !important;
}
label:before,
input[type="checkbox"]:checked + label:before {
content:'';
display:inline-block;
vertical-align: top;
line-height: 1em;
border: 1px solid #999;
border-radius: 0.3em;
width: 1em;
height:1em;
margin-right: 0.3em;
text-align: center;
}
input[type="checkbox"]:checked + label:before {
content: '?';
color: green;
}
See the JS fiddle: http://jsfiddle.net/VzvFE/37
Long version:
private bool booleanMethod () {
if (your_condition) {
return true;
} else {
return false;
}
}
But since you are using the outcome of your condition as the result of the method you can shorten it to
private bool booleanMethod () {
return your_condition;
}