Make sure that all functions with non-void return type have a return
statement.
While some compilers automatically provide a default return value, others will send a SIGILL or SIGTRAP at runtime when trying to leave a function without a return value.
You are implementing LocationListener in your activity MainActivity. The call for concurrent location updates will therefor be like this:
mLocationClient.requestLocationUpdates(mLocationRequest, this);
Be sure that the LocationListener you're implementing is from the google api, that is import this:
import com.google.android.gms.location.LocationListener;
and not this:
import android.location.LocationListener;
and it should work just fine.
It's also important that the LocationClient really is connected before you do this. I suggest you don't call it in the onCreate or onStart methods, but in onResume. It is all explained quite well in the tutorial for Google Location Api: https://developer.android.com/training/location/index.html
Code will be As below.
[textarea id:message 0x0 class:custom-class "Insert text here"]<!-- No Rows No columns -->
[textarea id:message x2 class:custom-class "Insert text here"]<!-- Only Rows -->
[textarea id:message 12x class:custom-class "Insert text here"]<!-- Only Columns -->
[textarea id:message 10x2 class:custom-class "Insert text here"]<!-- Both Rows and Columns -->
For Details: https://contactform7.com/text-fields/
Don't get confused with the concepts of Angular and RxJS
We have pipes concept in Angular and pipe()
function in RxJS.
1) Pipes in Angular: A pipe takes in data as input and transforms it to the desired output
https://angular.io/guide/pipes
2) pipe()
function in RxJS: You can use pipes to link operators together. Pipes let you combine multiple functions into a single function.
The pipe()
function takes as its arguments the functions you want to combine, and returns a new function that, when executed, runs the composed functions in sequence.
https://angular.io/guide/rx-library (search for pipes in this URL, you can find the same)
So according to your question, you are referring pipe()
function in RxJS
Sharepoint Lists automatically have an column with "ID" which auto increments. You simply need to select this column from the "modify view" screen to view it.
Answers above are all cool, but they all missed one thing. group executes tasks(blocks) in the thread where it entered when you use dispatch_group_enter
/dispatch_group_leave
.
- (IBAction)buttonAction:(id)sender {
dispatch_queue_t demoQueue = dispatch_queue_create("com.demo.group", DISPATCH_QUEUE_CONCURRENT);
dispatch_async(demoQueue, ^{
dispatch_group_t demoGroup = dispatch_group_create();
for(int i = 0; i < 10; i++) {
dispatch_group_enter(demoGroup);
[self testMethod:i
block:^{
dispatch_group_leave(demoGroup);
}];
}
dispatch_group_notify(demoGroup, dispatch_get_main_queue(), ^{
NSLog(@"All group tasks are done!");
});
});
}
- (void)testMethod:(NSInteger)index block:(void(^)(void))completeBlock {
NSLog(@"Group task started...%ld", index);
NSLog(@"Current thread is %@ thread", [NSThread isMainThread] ? @"main" : @"not main");
[NSThread sleepForTimeInterval:1.f];
if(completeBlock) {
completeBlock();
}
}
this runs in the created concurrent queue demoQueue
. If i dont create any queue, it runs in main thread.
- (IBAction)buttonAction:(id)sender {
dispatch_group_t demoGroup = dispatch_group_create();
for(int i = 0; i < 10; i++) {
dispatch_group_enter(demoGroup);
[self testMethod:i
block:^{
dispatch_group_leave(demoGroup);
}];
}
dispatch_group_notify(demoGroup, dispatch_get_main_queue(), ^{
NSLog(@"All group tasks are done!");
});
}
- (void)testMethod:(NSInteger)index block:(void(^)(void))completeBlock {
NSLog(@"Group task started...%ld", index);
NSLog(@"Current thread is %@ thread", [NSThread isMainThread] ? @"main" : @"not main");
[NSThread sleepForTimeInterval:1.f];
if(completeBlock) {
completeBlock();
}
}
and there's a third way to make tasks executed in another thread:
- (IBAction)buttonAction:(id)sender {
dispatch_queue_t demoQueue = dispatch_queue_create("com.demo.group", DISPATCH_QUEUE_CONCURRENT);
// dispatch_async(demoQueue, ^{
__weak ViewController* weakSelf = self;
dispatch_group_t demoGroup = dispatch_group_create();
for(int i = 0; i < 10; i++) {
dispatch_group_enter(demoGroup);
dispatch_async(demoQueue, ^{
[weakSelf testMethod:i
block:^{
dispatch_group_leave(demoGroup);
}];
});
}
dispatch_group_notify(demoGroup, dispatch_get_main_queue(), ^{
NSLog(@"All group tasks are done!");
});
// });
}
Of course, as mentioned you can use dispatch_group_async
to get what you want.
A few options:
filter(lambda x: len(x) > 0, list1) # Doesn't work with number types
filter(None, list1) # Filters out int(0)
filter(lambda x: x==0 or x, list1) # Retains int(0)
sample session:
Python 2.7.1 (r271:86832, Nov 27 2010, 17:19:03) [MSC v.1500 64 bit (AMD64)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> list1 = [[], [], [], [], [], 'text', 'text2', [], 'moreText']
>>> filter(lambda x: len(x) > 0, list1)
['text', 'text2', 'moreText']
>>> list2 = [[], [], [], [], [], 'text', 'text2', [], 'moreText', 0.5, 1, -1, 0]
>>> filter(lambda x: x==0 or x, list2)
['text', 'text2', 'moreText', 0.5, 1, -1, 0]
>>> filter(None, list2)
['text', 'text2', 'moreText', 0.5, 1, -1]
>>>
With Oracle you could use analytic functions:
select town, count(town), sum(count(town)) over () total_count from user
group by town
Your other options is to use a subquery:
select town, count(town), (select count(town) from user) as total_count from user
group by town
You can use implode to return your array with a string separator.
$withComma = implode(",", $array);
echo $withComma;
// Will display apple,banana,orange
string input = "OneTwoThree";
(if input.length >5)
{
string str=input.substring(input.length-5,5);
}
Here is a solution using moment.js:
var a = moment('7/11/2010','M/D/YYYY');
var b = moment('12/12/2010','M/D/YYYY');
var diffDays = b.diff(a, 'days');
alert(diffDays);
I used your original input values, but you didn't specify the format so I assumed the first value was July 11th. If it was intended to be November 7th, then adjust the format to D/M/YYYY
instead.
Although you should have no problem running a 2005 instance of the database engine beside a 2008 instance, The tools are installed into a shared directory, so you can't have two versions of the tools installed. Fortunately, the 2008 tools are backwards-compatible. As we speak, I'm using SSMS 2008 and Profiler 2008 to manage my 2005 Express instances. Works great.
Before installing the 2008 tools, you need to remove any and all "shared" components from 2005. Try going to your Add/Remove programs control panel, find Microsoft SQL Server 2005, and click "Change." Then choose "Workstation Components" and remove everything there (this will not remove your database engine).
I believe the 2008 installer also has an option to upgrade shared components only. You might try that. Good luck!
I wrote and released a small Nuget Package which can be used to print a PDF file to a printerdriver. It can also print to a XPS file or PDF file. Here is a link to it.
String byteToBinaryString(byte b){
StringBuilder binaryStringBuilder = new StringBuilder();
for(int i = 0; i < 8; i++)
binaryStringBuilder.append(((0x80 >>> i) & b) == 0? '0':'1');
return binaryStringBuilder.toString();
}
The way you are using await/async is poor at best, and it makes it hard to follow. You are mixing await
with Task'1.Result
, which is just confusing. However, it looks like you are looking at a final task result, rather than the contents.
I've rewritten your function and function call, which should fix your issue:
async Task<string> GetResponseString(string text)
{
var httpClient = new HttpClient();
var parameters = new Dictionary<string, string>();
parameters["text"] = text;
var response = await httpClient.PostAsync(BaseUri, new FormUrlEncodedContent(parameters));
var contents = await response.Content.ReadAsStringAsync();
return contents;
}
And your final function call:
Task<string> result = GetResponseString(text);
var finalResult = result.Result;
Or even better:
var finalResult = await GetResponseString(text);
I had the same problem trying to port a Go program to C#. This means that a lot of data has already been encrypted with the Go program. This data must now be decrypted with C#.
The final solution was PaddingMode.None
or rather PaddingMode.Zeros
.
The cryptographic methods in Go:
import (
"crypto/aes"
"crypto/cipher"
"crypto/sha1"
"encoding/base64"
"io/ioutil"
"log"
"golang.org/x/crypto/pbkdf2"
)
func decryptFile(filename string, saltBytes []byte, masterPassword []byte) (artifact string) {
const (
keyLength int = 256
rfc2898Iterations int = 6
)
var (
encryptedBytesBase64 []byte // The encrypted bytes as base64 chars
encryptedBytes []byte // The encrypted bytes
)
// Load an encrypted file:
if bytes, bytesErr := ioutil.ReadFile(filename); bytesErr != nil {
log.Printf("[%s] There was an error while reading the encrypted file: %s\n", filename, bytesErr.Error())
return
} else {
encryptedBytesBase64 = bytes
}
// Decode base64:
decodedBytes := make([]byte, len(encryptedBytesBase64))
if countDecoded, decodedErr := base64.StdEncoding.Decode(decodedBytes, encryptedBytesBase64); decodedErr != nil {
log.Printf("[%s] An error occur while decoding base64 data: %s\n", filename, decodedErr.Error())
return
} else {
encryptedBytes = decodedBytes[:countDecoded]
}
// Derive key and vector out of the master password and the salt cf. RFC 2898:
keyVectorData := pbkdf2.Key(masterPassword, saltBytes, rfc2898Iterations, (keyLength/8)+aes.BlockSize, sha1.New)
keyBytes := keyVectorData[:keyLength/8]
vectorBytes := keyVectorData[keyLength/8:]
// Create an AES cipher:
if aesBlockDecrypter, aesErr := aes.NewCipher(keyBytes); aesErr != nil {
log.Printf("[%s] Was not possible to create new AES cipher: %s\n", filename, aesErr.Error())
return
} else {
// CBC mode always works in whole blocks.
if len(encryptedBytes)%aes.BlockSize != 0 {
log.Printf("[%s] The encrypted data's length is not a multiple of the block size.\n", filename)
return
}
// Reserve memory for decrypted data. By definition (cf. AES-CBC), it must be the same lenght as the encrypted data:
decryptedData := make([]byte, len(encryptedBytes))
// Create the decrypter:
aesDecrypter := cipher.NewCBCDecrypter(aesBlockDecrypter, vectorBytes)
// Decrypt the data:
aesDecrypter.CryptBlocks(decryptedData, encryptedBytes)
// Cast the decrypted data to string:
artifact = string(decryptedData)
}
return
}
... and ...
import (
"crypto/aes"
"crypto/cipher"
"crypto/sha1"
"encoding/base64"
"github.com/twinj/uuid"
"golang.org/x/crypto/pbkdf2"
"io/ioutil"
"log"
"math"
"os"
)
func encryptFile(filename, artifact string, masterPassword []byte) (status bool) {
const (
keyLength int = 256
rfc2898Iterations int = 6
)
status = false
secretBytesDecrypted := []byte(artifact)
// Create new salt:
saltBytes := uuid.NewV4().Bytes()
// Derive key and vector out of the master password and the salt cf. RFC 2898:
keyVectorData := pbkdf2.Key(masterPassword, saltBytes, rfc2898Iterations, (keyLength/8)+aes.BlockSize, sha1.New)
keyBytes := keyVectorData[:keyLength/8]
vectorBytes := keyVectorData[keyLength/8:]
// Create an AES cipher:
if aesBlockEncrypter, aesErr := aes.NewCipher(keyBytes); aesErr != nil {
log.Printf("[%s] Was not possible to create new AES cipher: %s\n", filename, aesErr.Error())
return
} else {
// CBC mode always works in whole blocks.
if len(secretBytesDecrypted)%aes.BlockSize != 0 {
numberNecessaryBlocks := int(math.Ceil(float64(len(secretBytesDecrypted)) / float64(aes.BlockSize)))
enhanced := make([]byte, numberNecessaryBlocks*aes.BlockSize)
copy(enhanced, secretBytesDecrypted)
secretBytesDecrypted = enhanced
}
// Reserve memory for encrypted data. By definition (cf. AES-CBC), it must be the same lenght as the plaintext data:
encryptedData := make([]byte, len(secretBytesDecrypted))
// Create the encrypter:
aesEncrypter := cipher.NewCBCEncrypter(aesBlockEncrypter, vectorBytes)
// Encrypt the data:
aesEncrypter.CryptBlocks(encryptedData, secretBytesDecrypted)
// Encode base64:
encodedBytes := make([]byte, base64.StdEncoding.EncodedLen(len(encryptedData)))
base64.StdEncoding.Encode(encodedBytes, encryptedData)
// Allocate memory for the final file's content:
fileContent := make([]byte, len(saltBytes))
copy(fileContent, saltBytes)
fileContent = append(fileContent, 10)
fileContent = append(fileContent, encodedBytes...)
// Write the data into a new file. This ensures, that at least the old version is healthy in case that the
// computer hangs while writing out the file. After a successfully write operation, the old file could be
// deleted and the new one could be renamed.
if writeErr := ioutil.WriteFile(filename+"-update.txt", fileContent, 0644); writeErr != nil {
log.Printf("[%s] Was not able to write out the updated file: %s\n", filename, writeErr.Error())
return
} else {
if renameErr := os.Rename(filename+"-update.txt", filename); renameErr != nil {
log.Printf("[%s] Was not able to rename the updated file: %s\n", fileContent, renameErr.Error())
} else {
status = true
return
}
}
return
}
}
Now, decryption in C#:
public static string FromFile(string filename, byte[] saltBytes, string masterPassword)
{
var iterations = 6;
var keyLength = 256;
var blockSize = 128;
var result = string.Empty;
var encryptedBytesBase64 = File.ReadAllBytes(filename);
// bytes -> string:
var encryptedBytesBase64String = System.Text.Encoding.UTF8.GetString(encryptedBytesBase64);
// Decode base64:
var encryptedBytes = Convert.FromBase64String(encryptedBytesBase64String);
var keyVectorObj = new Rfc2898DeriveBytes(masterPassword, saltBytes.Length, iterations);
keyVectorObj.Salt = saltBytes;
Span<byte> keyVectorData = keyVectorObj.GetBytes(keyLength / 8 + blockSize / 8);
var key = keyVectorData.Slice(0, keyLength / 8);
var iv = keyVectorData.Slice(keyLength / 8);
var aes = Aes.Create();
aes.Padding = PaddingMode.Zeros;
// or ... aes.Padding = PaddingMode.None;
var decryptor = aes.CreateDecryptor(key.ToArray(), iv.ToArray());
var decryptedString = string.Empty;
using (var memoryStream = new MemoryStream(encryptedBytes))
{
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
{
using (var reader = new StreamReader(cryptoStream))
{
decryptedString = reader.ReadToEnd();
}
}
}
return result;
}
How can the issue with the padding be explained? Just before encryption the Go program checks the padding:
// CBC mode always works in whole blocks.
if len(secretBytesDecrypted)%aes.BlockSize != 0 {
numberNecessaryBlocks := int(math.Ceil(float64(len(secretBytesDecrypted)) / float64(aes.BlockSize)))
enhanced := make([]byte, numberNecessaryBlocks*aes.BlockSize)
copy(enhanced, secretBytesDecrypted)
secretBytesDecrypted = enhanced
}
The important part is this:
enhanced := make([]byte, numberNecessaryBlocks*aes.BlockSize)
copy(enhanced, secretBytesDecrypted)
A new array is created with an appropriate length, so that the length is a multiple of the block size. This new array is filled with zeros. The copy method then copies the existing data into it. It is ensured that the new array is larger than the existing data. Accordingly, there are zeros at the end of the array.
Thus, the C# code can use PaddingMode.Zeros
. The alternative PaddingMode.None
just ignores any padding, which also works. I hope this answer is helpful for anyone who has to port code from Go to C#, etc.
In your case, it will produce an error. :-)
Set
assigns an object reference. For all other assignments the (implicit, optional, and little-used) Let
statement is correct:
Set object = New SomeObject
Set object = FunctionReturningAnObjectRef(SomeArgument)
Let i = 0
Let i = FunctionReturningAValue(SomeArgument)
' or, more commonly '
i = 0
i = FunctionReturningAValue(SomeArgument)
I had the same problem, but i solved it from Java Control Panel-->Security-->SecurityLevel:MEDIUM. Just so, no Manage certificates, imports ,exports etc..
The latest plugin is tidy2, which can be installed through Plugins>Plugin Manager>Show Plugin Manager.
I suggest editing config 1 and setting quote-marks: no, especially if you have script that makes use of quotes.
Also, tidying more than once can result in inserting ampersands the first time and then replacing the ampersands the second time. You may want to play with the config to get it to where you need it.
in laravel 5 first we need to create migration and then run the migration
Step 1.
php artisan make:migration create_users_table --create=users
Step 2.
php artisan migrate
Adding to @pranay-rana's list:
Third way is:
function passFromValue(){
var x = 15;
return x;
}
function passToValue() {
var y = passFromValue();
console.log(y);//15
}
passToValue();
Yes. You know that you can put any Object
into the Object
parameter of most JOptionPane.showXXX methods
, and often that Object
happens to be a JPanel
.
In your situation, perhaps you could use a JPanel
that has several JTextFields
in it:
import javax.swing.*;
public class JOptionPaneMultiInput {
public static void main(String[] args) {
JTextField xField = new JTextField(5);
JTextField yField = new JTextField(5);
JPanel myPanel = new JPanel();
myPanel.add(new JLabel("x:"));
myPanel.add(xField);
myPanel.add(Box.createHorizontalStrut(15)); // a spacer
myPanel.add(new JLabel("y:"));
myPanel.add(yField);
int result = JOptionPane.showConfirmDialog(null, myPanel,
"Please Enter X and Y Values", JOptionPane.OK_CANCEL_OPTION);
if (result == JOptionPane.OK_OPTION) {
System.out.println("x value: " + xField.getText());
System.out.println("y value: " + yField.getText());
}
}
}
Whats wrong in this?
<form class="navbar-form navbar-right" method="post" action="login.php">
<div class="form-group">
<input type="email" name="email" class="form-control" placeholder="email">
<input type="password" name="password" class="form-control" placeholder="password">
</div>
<input type="submit" name="submit" value="submit" class="btn btn-success">
</form>
login.php
if(isset($_POST['submit']) && !empty($_POST['submit'])) {
// if (!logged_in())
echo 'asodj';
}
Helvetica Neue is a paid font, so you shouldn't @font-face it, as you'd be freely distributing a copyrighted font. It's included in Mac systems but not in windows/linux ones, so yes, plenty of your users wont have it installed. Anyway, you can use 'Arial Narrow' as a windows substitute, which is it's windows equivalent.
try this
$.getJSON(url, function(data){
$.each(data.response.venue.tips.groups.items, function (index, value) {
console.log(this.text);
});
});
declare @LkeVal as Varchar(100)
declare @LkeSelect Varchar(100)
Set @LkeSelect = (select top 1 <column> from <table> where <column> = 'value')
Set @LkeVal = '%' + @LkeSelect
select * from <table2> where <column2> like(''+@LkeVal+'');
I started by using the answers here, but modified it to use YouTube's new iframe
embedding...
$('a.more').on('click', function(event) {
event.preventDefault();
$.fancybox({
'type' : 'iframe',
// hide the related video suggestions and autoplay the video
'href' : this.href.replace(new RegExp('watch\\?v=', 'i'), 'embed/') + '?rel=0&autoplay=1',
'overlayShow' : true,
'centerOnScroll' : true,
'speedIn' : 100,
'speedOut' : 50,
'width' : 640,
'height' : 480
});
});
From the HTTP core module docs:
Example from the documentation:
location = / {
# matches the query / only.
[ configuration A ]
}
location / {
# matches any query, since all queries begin with /, but regular
# expressions and any longer conventional blocks will be
# matched first.
[ configuration B ]
}
location /documents/ {
# matches any query beginning with /documents/ and continues searching,
# so regular expressions will be checked. This will be matched only if
# regular expressions don't find a match.
[ configuration C ]
}
location ^~ /images/ {
# matches any query beginning with /images/ and halts searching,
# so regular expressions will not be checked.
[ configuration D ]
}
location ~* \.(gif|jpg|jpeg)$ {
# matches any request ending in gif, jpg, or jpeg. However, all
# requests to the /images/ directory will be handled by
# Configuration D.
[ configuration E ]
}
If it's still confusing, here's a longer explanation.
According to the grammar in the CSP spec, you need to specify schemes as scheme:
, not just scheme
. So, you need to change the image source directive to:
img-src 'self' data:;
This should work:
window.onload = function() {
document.getElementById('about').className = 'expand';
};
Or if you're using jQuery:
$(function() {
$('#about').addClass('expand');
});
Elaborating the answer given by Michael Berry.
Dog d = (Dog)Animal; //Compiles but fails at runtime
Here you are saying to the compiler "Trust me. I know d
is really referring to a Dog
object" although it's not.
Remember compiler is forced to trust us when we do a downcast.
The compiler only knows about the declared reference type. The JVM at runtime knows what the object really is.
So when the JVM at the runtime figures out that the Dog d
is actually referring to an Animal
and not a Dog
object it says.
Hey... you lied to the compiler and throws a big fat ClassCastException
.
So if you are downcasting you should use instanceof
test to avoid screwing up.
if (animal instanceof Dog) {
Dog dog = (Dog) animal;
}
Now a question comes to our mind. Why the hell compiler is allowing the downcast when eventually it is going to throw a java.lang.ClassCastException
?
The answer is that all the compiler can do is verify that the two types are in the same inheritance tree, so depending on whatever code might have
come before the downcast, it's possible that animal
is of type dog
.
The compiler must allow things that might possible work at runtime.
Consider the following code snipet:
public static void main(String[] args)
{
Dog d = getMeAnAnimal();// ERROR: Type mismatch: cannot convert Animal to Dog
Dog d = (Dog)getMeAnAnimal(); // Downcast works fine. No ClassCastException :)
d.eat();
}
private static Animal getMeAnAnimal()
{
Animal animal = new Dog();
return animal;
}
However, if the compiler is sure that the cast would not possible work, compilation will fail. I.E. If you try to cast objects in different inheritance hierarchies
String s = (String)d; // ERROR : cannot cast for Dog to String
Unlike downcasting, upcasting works implicitly because when you upcast you are implicitly restricting the number of method you can invoke, as opposite to downcasting, which implies that later on, you might want to invoke a more specific method.
Dog d = new Dog();
Animal animal1 = d; // Works fine with no explicit cast
Animal animal2 = (Animal) d; // Works fine with n explicit cast
Both of the above upcast will work fine without any exception because a Dog IS-A Animal, anithing an Animal can do, a dog can do. But it's not true vica-versa.
ExecuteNonQuery: is typically used when there is nothing returned from the Sql statements like insert ,update, delete operations.
cmd.ExcecuteNonQuery();
ExecuteScalar:
It will be used when Sql query returns single value.
Int b = cmd.ExcecuteScalar();
ExecuteReader
It will be used when Sql query or Stored Procedure returns multiple rows/columns
SqlDataReader dr = cmd.ExecuteReader();
for more information you can click here http://www.dotnetqueries.com/Article/148/-difference-between-executescalar-executereader-executenonquery
There is none when it comes to file extensions. Your bundler/transpiler/whatever takes care of resolving what type of file contents there is.
There are however some other considerations when deciding what to put into a .js
or a .jsx
file type. Since JSX isn't standard JavaScript one could argue that anything that is not "plain" JavaScript should go into its own extensions ie., .jsx
for JSX and .ts
for TypeScript for example.
There's a good discussion here available for read
EDITED TO ADD: The following code is outdated and won't work in PHP 7. See the note towards the bottom of the answer for more details.
Assuming a table structure of an integer ID and a blob DATA column, and assuming MySQL functions are being used to interface with the database, you could probably do something like this:
$result = mysql_query 'INSERT INTO table (
data
) VALUES (
\'' . mysql_real_escape_string (file_get_contents ('/path/to/the/file/to/store.pdf')) . '\'
);';
A word of warning though, storing blobs in databases is generally not considered to be the best idea as it can cause table bloat and has a number of other problems associated with it. A better approach would be to move the file somewhere in the filesystem where it can be retrieved, and store the path to the file in the database instead of the file itself.
Also, using mysql_* function calls is discouraged as those methods are effectively deprecated and aren't really built with versions of MySQL newer than 4.x in mind. You should switch to mysqli or PDO instead.
UPDATE: mysql_* functions are deprecated in PHP 5.x and are REMOVED COMPLETELY IN PHP 7! You now have no choice but to switch to a more modern Database Abstraction (MySQLI, PDO). I've decided to leave the original answer above intact for historical reasons but don't actually use it
Here's how to do it with mysqli in procedural mode:
$result = mysqli_query ($db, 'INSERT INTO table (
data
) VALUES (
\'' . mysqli_real_escape_string (file_get_contents ('/path/to/the/file/to/store.pdf'), $db) . '\'
);');
The ideal way of doing it is with MySQLI/PDO prepared statements.
[[ There are some good answers here but I find that they still are lacking a bit of information. ]]
return (new StringBuilder("select id1, " + " id2 " + " from " + " table"))
.toString();
So as you point out, the example you give is a simplistic but let's analyze it anyway. What happens here is the compiler actually does the +
work here because "select id1, " + " id2 " + " from " + " table"
are all constants. So this turns into:
return new StringBuilder("select id1, id2 from table").toString();
In this case, obviously, there is no point in using StringBuilder
. You might as well do:
// the compiler combines these constant strings
return "select id1, " + " id2 " + " from " + " table";
However, even if you were appending any fields or other non-constants then the compiler would use an internal StringBuilder
-- there's no need for you to define one:
// an internal StringBuilder is used here
return "select id1, " + fieldName + " from " + tableName;
Under the covers, this turns into code that is approximately equivalent to:
StringBuilder sb = new StringBuilder("select id1, ");
sb.append(fieldName).append(" from ").append(tableName);
return sb.toString();
Really the only time you need to use StringBuilder
directly is when you have conditional code. For example, code that looks like the following is desperate for a StringBuilder
:
// 1 StringBuilder used in this line
String query = "select id1, " + fieldName + " from " + tableName;
if (where != null) {
// another StringBuilder used here
query += ' ' + where;
}
The +
in the first line uses one StringBuilder
instance. Then the +=
uses another StringBuilder
instance. It is more efficient to do:
// choose a good starting size to lower chances of reallocation
StringBuilder sb = new StringBuilder(64);
sb.append("select id1, ").append(fieldName).append(" from ").append(tableName);
// conditional code
if (where != null) {
sb.append(' ').append(where);
}
return sb.toString();
Another time that I use a StringBuilder
is when I'm building a string from a number of method calls. Then I can create methods that take a StringBuilder
argument:
private void addWhere(StringBuilder sb) {
if (where != null) {
sb.append(' ').append(where);
}
}
When you are using a StringBuilder
, you should watch for any usage of +
at the same time:
sb.append("select " + fieldName);
That +
will cause another internal StringBuilder
to be created. This should of course be:
sb.append("select ").append(fieldName);
Lastly, as @T.J.rowder points out, you should always make a guess at the size of the StringBuilder
. This will save on the number of char[]
objects created when growing the size of the internal buffer.
Oh, dear. A few little problems...
As pointed out by others, you need to quote to protect against empty/space-containing entries, and use the !delayed_expansion! facility.
Two other matters of which you should be aware:
First, set/p
will assign a user-input value to a variable. That's not news - but the gotcha is that pressing enter
in response will leave the variable UNCHANGED - it will not ASSIGN a zero-length string to the variable (hence deleting the variable from the environment.) The safe method is:
set "var="
set /p var=
That is, of course, if you don't WANT enter
to repeat the existing value.
Another useful form is
set "var=default"
set /p var=
or
set "var=default"
set /p "var=[%var%]"
(which prompts with the default value; !var!
if in a block statement with delayedexpansion)
Second issue is that on some Windows versions (although W7 appears to "fix" this issue) ANY label - including a :: comment
(which is a broken-label) will terminate any 'block' - that is, parenthesised compound statement)
If you are still looking for further more customization,
Check out the following library: https://lokesh-coder.github.io/pretty-checkbox/
Thanks
#import "homeViewController.h"
#import "detailViewController.h"
@interface homeViewController ()
@end
@implementation homeViewController
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.tableView.frame = CGRectMake(0, 20, 320, 548);
self.title=@"Jason Assignment";
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
[self clientServerCommunication];
}
-(void)clientServerCommunication
{
NSURL *url = [NSURL URLWithString:@"http://182.72.122.106/iphonetest/getTheData.php"];
NSURLRequest *req = [NSURLRequest requestWithURL:url];
NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:req delegate:self];
if (connection)
{
webData = [[NSMutableData alloc]init];
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSDictionary *responseDict = [NSJSONSerialization JSONObjectWithData:webData options:0 error:nil];
/*Third party API
NSString *respStr = [[NSString alloc]initWithData:webData encoding:NSUTF8StringEncoding];
SBJsonParser *objSBJson = [[SBJsonParser alloc]init];
NSDictionary *responseDict = [objSBJson objectWithString:respStr]; */
resultArray = [[NSArray alloc]initWithArray:[responseDict valueForKey:@"result"]];
NSLog(@"resultArray: %@",resultArray);
[self.tableView reloadData];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
//#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
//#warning Incomplete method implementation.
// Return the number of rows in the section.
return [resultArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.textLabel.text = [[resultArray objectAtIndex:indexPath.row] valueForKey:@"name"];
cell.detailTextLabel.text = [[resultArray objectAtIndex:indexPath.row] valueForKey:@"designation"];
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:[[resultArray objectAtIndex:indexPath.row] valueForKey:@"image"]]];
cell.imageview.image = [UIImage imageWithData:imageData];
return cell;
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Table view delegate
// In a xib-based application, navigation from a table can be handled in -tableView:didSelectRowAtIndexPath:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here, for example:
//Create the next view controller.
detailViewController *detailViewController1 = [[detailViewController alloc]initWithNibName:@"detailViewController" bundle:nil];
//detailViewController *detailViewController = [[detailViewController alloc] initWithNibName:@"detailViewController" bundle:nil];
// Pass the selected object to the new view controller.
// Push the view controller.
detailViewController1.nextDict = [[NSDictionary alloc]initWithDictionary:[resultArray objectAtIndex:indexPath.row]];
[self.navigationController pushViewController:detailViewController1 animated:YES];
// Pass the selected object to the new view controller.
// Push the view controller.
// [self.navigationController pushViewController:detailViewController animated:YES];
}
@end
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
empName.text=[nextDict valueForKey:@"name"];
deptlbl.text=[nextDict valueForKey:@"department"];
designationLbl.text=[nextDict valueForKey:@"designation"];
idLbl.text=[nextDict valueForKey:@"id"];
salaryLbl.text=[nextDict valueForKey:@"salary"];
NSString *ImageURL = [nextDict valueForKey:@"image"];
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:ImageURL]];
image.image = [UIImage imageWithData:imageData];
}
If you are using TortoiseSVN client then you can follow the below steps
Right-click in the source directory and then click on SVN Relocate
After that, you need to change the URL to what you want, click ok, it will be taking a few seconds.
if($('selector').hasClass('active')){ }
i think this will check if the selector hasClass active ...
I'm surprised that no one has mentioned the list-style-image property
ul {
list-style-image: url('images/ico-list-bullet.png');
}
There are three possible ways to do that.
Option
SELECT lt.* FROM table_left lt
LEFT JOIN
table_right rt
ON rt.value = lt.value
WHERE rt.value IS NULL
Option
SELECT lt.* FROM table_left lt
WHERE lt.value NOT IN
(
SELECT value
FROM table_right rt
)
Option
SELECT lt.* FROM table_left lt
WHERE NOT EXISTS
(
SELECT NULL
FROM table_right rt
WHERE rt.value = lt.value
)
It's swift format :
func dateFormatterWithCalendar(calndarIdentifier: Calendar.Identifier, dateFormat: String) -> DateFormatter {
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: calndarIdentifier)
formatter.dateFormat = dateFormat
return formatter
}
//Usage
let date = Date()
let fotmatter = dateFormatterWithCalendar(calndarIdentifier: .gregorian, dateFormat: "yyyy")
let dateString = fotmatter.string(from: date)
print(dateString) //2018
Edit: 2015-10-26: thanks for the upvotes - but take a look at tchrist's answer, especially if you develop for the web or something more "international".
Oren Trutners answer isn't quite right (see sample input of "RightHerE" which must be matched but isn't)
Here is the correct solution:
(?!^.*[A-Z]{2,}.*$)^[A-Za-z]*$
edit:
(?!^.*[A-Z]{2,}.*$) // don't match the whole expression if there are two or more consecutive uppercase letters
^[A-Za-z]*$ // match uppercase and lowercase letters
/edit
the key for the solution is a negative lookahead see: http://www.regular-expressions.info/lookaround.html
You can just implement a user-defined type like the following:
type Nullable<T> = T | undefined | null;
var foo: Nullable<number> = 10; // ok
var bar: Nullable<number> = true; // type 'true' is not assignable to type 'Nullable<number>'
var baz: Nullable<number> = null; // ok
var arr1: Nullable<Array<number>> = [1,2]; // ok
var obj: Nullable<Object> = {}; // ok
// Type 'number[]' is not assignable to type 'string[]'.
// Type 'number' is not assignable to type 'string'
var arr2: Nullable<Array<string>> = [1,2];
you can get ip of that computer runs server program from DHCP list in that router you connected to.
I was getting the same error while trying to load simply HTML files that used JSON data to populate the page, so I used used node.js and express to solve the problem. If you do not have node installed, you need to install node first.
Install express
npm install express
Create a server.js file in the root folder of your project, in my case one folder above the files I wanted to server
Put something like the following in the server.js file and read about this on the express gihub site:
var express = require('express');
var app = express();
var path = require('path');
// __dirname will use the current path from where you run this file
app.use(express.static(__dirname));
app.use(express.static(path.join(__dirname, '/FOLDERTOHTMLFILESTOSERVER')));
app.listen(8000);
console.log('Listening on port 8000');
After you've saved server.js, you can run the server using:
node server.js
http://localhost:8000/FILENAME
and you should see the HTML file you were trying to loadThe default value for a Boolean
(object) is null
.
The default value for a boolean
(primitive) is false
.
On GKE, if the pod is dead, it's best to check for the events. It will show in more detail what the error is about.
In my case, I had :
Failed to pull image "gcr.io/project/imagename@sha256:c8e91af54fc17faa1c49e2a05def5cbabf8f0a67fc558eb6cbca138061a8400a":
rpc error: code = Unknown desc = error pulling image configuration: unknown blob
It turned out the image was damaged somehow. After repushing it and deploying with the new hash, it worked again.
"I have been under the impression for that JavaScript was always asynchronous"
You can use JavaScript in a synchronous way, or an asynchronous way. In fact JavaScript has really good asynchronous support. For example I might have code that requires a database request. I can then run other code, not dependent
on that request, while I wait for that request to complete. This asynchronous coding is supported with promises, async/await, etc. But if you don't need a nice way to handle long waits then just use JS synchronously.
What do we mean by 'asynchronous'. Well it does not mean multi-threaded, but rather describes a non-dependent relationship. Check out this image from this popular answer:
A-Start ------------------------------------------ A-End
| B-Start -----------------------------------------|--- B-End
| | C-Start ------------------- C-End | |
| | | | | |
V V V V V V
1 thread->|<-A-|<--B---|<-C-|-A-|-C-|--A--|-B-|--C-->|---A---->|--B-->|
We see that a single threaded application can have async behavior. The work in function A is not dependent on function B completing, and so while function A began before function B, function A is able to complete at a later time and on the same thread.
So, just because JavaScript executes one command at a time, on a single thread, it does not then follow that JavaScript can only be used as a synchronous language.
"Is there a good reference anywhere about when it will be synchronous and when it will be asynchronous"
I'm wondering if this is the heart of your question. I take it that you mean how do you know if some code you are calling is async or sync. That is, will the rest of your code run off and do something while you wait for some result? Your first check should be the documentation for whichever library you are using. Node methods, for example, have clear names like readFileSync
. If the documentation is no good there is a lot of help here on SO. EG:
In your template, you have access to all the variables that are members of the current $scope
. So, tobedone
should be $scope.tobedone
, and then you can display it with {{tobedone}}
, or [[tobedone]]
in your case.
The resolution is 480 dpi, the launcher icon is 144*144px all is scaled 3x respect to mdpi (so called "base", "baseline" or "normal") sizes.
If you want to force the issue, you can do:
git reset --hard c14809fafb08b9e96ff2879999ba8c807d10fb07
send you back to how your git clone looked like at the time of the checkin
float: 32 bits (4 bytes) where 23 bits are used for the mantissa (about 7 decimal digits). 8 bits are used for the exponent, so a float can “move” the decimal point to the right or to the left using those 8 bits. Doing so avoids storing lots of zeros in the mantissa as in 0.0000003 (3 × 10-7) or 3000000 (3 × 107). There is 1 bit used as the sign bit.
double: 64 bits (8 bytes) where 52 bits are used for the mantissa (about 16 decimal digits). 11 bits are used for the exponent and 1 bit is the sign bit.
Since we are using binary (only 0 and 1), one bit in the mantissa is implicitly 1 (both float and double use this trick) when the number is non-zero.
Also, since everything is in binary (mantissa and exponents) the conversions to decimal numbers are usually not exact. Numbers like 0.5, 0.25, 0.75, 0.125 are stored exactly, but 0.1 is not. As others have said, if you need to store cents precisely, do not use float or double, use int, long, BigInteger or BigDecimal.
Sources:
http://en.wikipedia.org/wiki/Floating_point#IEEE_754:_floating_point_in_modern_computers
You are trying to call DeckOfCards::shuffle
with a deckOfCards
parameter:
deckOfCards cardDeck; // create DeckOfCards object
cardDeck.shuffle(cardDeck); // shuffle the cards in the deck
But the method takes a vector<Card>&
:
void deckOfCards::shuffle(vector<Card>& deck)
The compiler error messages are quite clear on this. I'll paraphrase the compiler as it talks to you.
Error:
[Error] no matching function for call to 'deckOfCards::shuffle(deckOfCards&)'
Paraphrased:
Hey, pal. You're trying to call a function called
shuffle
which apparently takes a single parameter of type reference-to-deckOfCards
, but there is no such function.
Error:
[Note] candidate is:
In file included from main.cpp
[Note] void deckOfCards::shuffle(std::vector&)
Paraphrased:
I mean, maybe you meant this other function called
shuffle
, but that one takes a reference-tovector<something>
.
Error:
[Note] no known conversion for argument 1 from 'deckOfCards' to 'std::vector&'
Which I'd be happy to call if I knew how to convert from a
deckOfCards
to avector
; but I don't. So I won't.
I would recommend using: https://github.com/sunnykgupta/jsLogger
Features:
log
, warn
, error
, info
.Is open for modifications and will be updated whenever new suggestions come up.
Disclaimer: I am the author of the plugin.
I made it short way like this (Working on API pre 21 as well as post 21)
Your radio button in xml should look like this
<RadioButton android:id="@+id/radioid"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:button="@drawable/radiodraw" />
in radiodraw.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="false" >
<shape android:shape="oval" >
<stroke android:width="1dp" android:color="#000"/>
<size android:width="30dp" android:height="30dp"/>
<solid android:color="@android:color/transparent"/>
</shape>
</item>
<item android:state_checked="true">
<layer-list>
<item>
<shape android:shape="oval">
<stroke android:width="1dp" android:color="#000"/>
<size android:width="30dp" android:height="30dp"/>
<solid android:color="@android:color/transparent"/>
</shape>
</item>
<item android:top="5dp" android:bottom="5dp" android:left="5dp" android:right="5dp">
<shape android:shape="oval">
<solid android:width="1dp" android:color="#000"/>
<size android:width="10dp" android:height="10dp"/>
</shape>
</item>
</layer-list>
</item>
</selector>
have to add color transparent for drawing the unchecked status ;else it draw solid black oval.
You've probably miss-typed something above that bit of code or created your own class called IPAddress. If you're using the .net one, that function should be available.
Have you tried using System.Net.IPAddress just in case?
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse("127.0.0.1"); //127.0.0.1 as an example
The docs on Microsoft's site have a complete example which works fine on my machine.
Somehow your requirement sounds a bit contradictory ..
group by name (which is basically a distinct on name plus readiness to aggregate) and then a distinct on IP
What do you think should happen if two people (names) worked from the same IP within the time period specified?
Did you try this?
SELECT name, COUNT(name), time, price, ip, SUM(price)
FROM tablename
WHERE time >= $yesterday AND time <$today
GROUP BY name,ip
For all types I cooked up an Object prototype function. It may be of use to you
Object.prototype.typof = function(chkType){
var inp = String(this.constructor),
customObj = (inp.split(/\({1}/))[0].replace(/^\n/,'').substr(9),
regularObj = Object.prototype.toString.apply(this),
thisType = regularObj.toLowerCase()
.match(new RegExp(customObj.toLowerCase()))
? regularObj : '[object '+customObj+']';
return chkType
? thisType.toLowerCase().match(chkType.toLowerCase())
? true : false
: thisType;
}
Now you can check any type like this:
var myDate = new Date().toString(),
myRealDate = new Date();
if (myRealDate.typof('Date')) { /* do things */ }
alert( myDate.typof() ); //=> String
[Edit march 2013] based on progressing insight this is a better method:
Object.prototype.is = function() {
var test = arguments.length ? [].slice.call(arguments) : null
,self = this.constructor;
return test ? !!(test.filter(function(a){return a === self}).length)
: (this.constructor.name ||
(String(self).match ( /^function\s*([^\s(]+)/im)
|| [0,'ANONYMOUS_CONSTRUCTOR']) [1] );
}
// usage
var Some = function(){ /* ... */}
,Other = function(){ /* ... */}
,some = new Some;
2..is(String,Function,RegExp); //=> false
2..is(String,Function,Number,RegExp); //=> true
'hello'.is(String); //=> true
'hello'.is(); //-> String
/[a-z]/i.is(); //-> RegExp
some.is(); //=> 'ANONYMOUS_CONSTRUCTOR'
some.is(Other); //=> false
some.is(Some); //=> true
// note: you can't use this for NaN (NaN === Number)
(+'ab2').is(Number); //=> true
Combining and filling in the blanks from several answers (in particular Ortwin Gentz, user 98013) and another post, this will work out of the box for SDK 4.3 on an iPad in Portrait or Landscape mode:
@implementation UIView (FindFirstResponder)
- (UIResponder *)findFirstResponder
{
if (self.isFirstResponder) {
return self;
}
for (UIView *subView in self.subviews) {
UIResponder *firstResponder = [subView findFirstResponder];
if (firstResponder != nil) {
return firstResponder;
}
}
return nil;
}
@end
@implementation MyViewController
- (UIResponder *)currentFirstResponder {
return [self.view findFirstResponder];
}
- (IBAction)editingEnded:sender {
[sender resignFirstResponder];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return NO;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField {
UITableViewCell *cell = (UITableViewCell*) [[textField superview] superview];
[_tableView scrollToRowAtIndexPath:[_tableView indexPathForCell:cell] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
- (void)keyboardWillShow:(NSNotification*)notification {
if ([self currentFirstResponder] != nil) {
NSDictionary* userInfo = [notification userInfo];
// we don't use SDK constants here to be universally compatible with all SDKs = 3.0
NSValue* keyboardFrameValue = [userInfo objectForKey:@"UIKeyboardBoundsUserInfoKey"];
if (!keyboardFrameValue) {
keyboardFrameValue = [userInfo objectForKey:@"UIKeyboardFrameEndUserInfoKey"];
}
// Reduce the tableView height by the part of the keyboard that actually covers the tableView
CGRect windowRect = [[UIApplication sharedApplication] keyWindow].bounds;
CGRect viewRectAbsolute = [_tableView convertRect:_tableView.bounds toView:[[UIApplication sharedApplication] keyWindow]];
CGRect frame = _tableView.frame;
if (UIInterfaceOrientationLandscapeLeft == self.interfaceOrientation ||UIInterfaceOrientationLandscapeRight == self.interfaceOrientation ) {
windowRect = CGRectMake(windowRect.origin.y, windowRect.origin.x, windowRect.size.height, windowRect.size.width);
viewRectAbsolute = CGRectMake(viewRectAbsolute.origin.y, viewRectAbsolute.origin.x, viewRectAbsolute.size.height, viewRectAbsolute.size.width);
}
frame.size.height -= [keyboardFrameValue CGRectValue].size.height - CGRectGetMaxY(windowRect) + CGRectGetMaxY(viewRectAbsolute);
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:[[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue]];
[UIView setAnimationCurve:[[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] intValue]];
_tableView.frame = frame;
[UIView commitAnimations];
UITableViewCell *textFieldCell = (id)((UITextField *)self.currentFirstResponder).superview.superview;
NSIndexPath *textFieldIndexPath = [_tableView indexPathForCell:textFieldCell];
// iOS 3 sends hide and show notifications right after each other
// when switching between textFields, so cancel -scrollToOldPosition requests
[NSObject cancelPreviousPerformRequestsWithTarget:self];
_topmostRowBeforeKeyboardWasShown = [[_tableView indexPathsForVisibleRows] objectAtIndex:0];
[_tableView scrollToRowAtIndexPath:textFieldIndexPath atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
}
}
- (void) scrollToOldPosition {
[_tableView scrollToRowAtIndexPath:_topmostRowBeforeKeyboardWasShown atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
- (void)keyboardWillHide:(NSNotification*)notification {
if ([self currentFirstResponder] != nil) {
NSDictionary* userInfo = [notification userInfo];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:[[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue]];
[UIView setAnimationCurve:[[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] intValue]];
_tableView.frame = self.view.bounds;
[UIView commitAnimations];
[self performSelector:@selector(scrollToOldPosition) withObject:nil afterDelay:0.1];
}
}
@end
I had a similar issue where the tests where not being discovered. I had the correct version of NUnit, versions matched up between NUnit and adapter, and the tests where tagged correctly. I was running VS 2017 Enterprise not as an administrator. After starting VS as administrator the tests appeared.
Simply use \1
instead of $1
:
In [1]: import re
In [2]: method = 'images/:id/huge'
In [3]: re.sub(r'(:[a-z]+)', r'<span>\1</span>', method)
Out[3]: 'images/<span>:id</span>/huge'
Also note the use of raw strings (r'...'
) for regular expressions. It is not mandatory but removes the need to escape backslashes, arguably making the code slightly more readable.
git pull
and git rebase
are not interchangeable, but they are closely connected.
git pull
fetches the latest changes of the current branch from a remote and applies those changes to your local copy of the branch. Generally this is done by merging, i.e. the local changes are merged into the remote changes. So git pull
is similar to git fetch & git merge
.
Rebasing is an alternative to merging. Instead of creating a new commit that combines the two branches, it moves the commits of one of the branches on top of the other.
You can pull using rebase instead of merge (git pull --rebase
). The local changes you made will be rebased on top of the remote changes, instead of being merged with the remote changes.
Atlassian has some excellent documentation on merging vs. rebasing.
I agree with noa -- if you need to have multiple versions of node
, io.js
then brew is not the appropriate solution.
You can help beta-test io.js
support in nvm: https://github.com/creationix/nvm/pull/616
If you just want io.js
and are not switching versions, then you can install the binary distribution of io.js
from https://iojs.org/dist/v1.0.2/iojs-v1.0.2-darwin-x64.tar.gz ; that includes npm
and you will not need nvm
if you are not switching versions.
Remember to update npm
after installing: sudo npm install -g npm@latest
I'm guessing here, based on issues I've had in the past which I did solve:
I ended up with two solutions. My original solution was based on using rsh. Since then, most of our servers have had ssh installed, which has made this easier.
Using rsh, I put together a table of machines vs OS vs custom options which would guide this process in perl. Bourne shell wasn't sufficient, and we don't have bash on Sun or HP machines (and didn't have bash on AIX at the time - AIX 5L wasn't out yet). Korn shell wasn't much of an option, either, since most of our Linux boxes don't have pdksh installed. But, if you don't face these limitations, you can implement the idea in ksh or bash, I think.
Anyway, I would basically run 'rsh $machine -l $user "$cmd"' where $machine, of course, was the machine I was logging in to, $user, similarly obvious (though when I was going in as "root" this had some variance as we have multiple roots on some machines for reasons I don't fully understand), and $cmd was basically "DISPLAY=$DISPLAY xterm", though if I were launching konsole, for example, $cmd would be "konsole --display=$DISPLAY". Since $DISPLAY was being evaluated locally (where it's set properly), and not being passed literally across rsh, the display would always be set correctly.
I also had to make sure that no one did anything silly like reset DISPLAY if it was already set.
Now, I just use ssh, make sure that X11Forwarding is set to yes on the server (sshd_config), and then I can just ssh to the machine, let X commands go across the wire encrypted, and it'll always go back to the right place.
This hides the warning message:
jQuery.event.special.touchstart = {
setup: function( _, ns, handle ) {
this.addEventListener("touchstart", handle, { passive: !ns.includes("noPreventDefault") });
}
};
Alternatively, if using javax.net.ssl.trustStore for specifying the location of your truststore does not work ( as it did in my case for two way authentication ), you can also use SSLContextBuilder as shown in the example below. This example also includes how to create a httpclient as well to show how the SSL builder would work.
SSLContextBuilder sslcontextbuilder = SSLContexts.custom();
sslcontextbuilder.loadTrustMaterial(
new File("C:\\path to\\truststore.jks"), //path to jks file
"password".toCharArray(), //enters in the truststore password for use
new TrustSelfSignedStrategy() //will trust own CA and all self-signed certs
);
SSLContext sslcontext = sslcontextbuilder.build(); //load trust store
SSLConnectionSocketFactory sslsockfac = new SSLConnectionSocketFactory(sslcontext,new String[] { "TLSv1" },null,SSLConnectionSocketFactory.getDefaultHostnameVerifier());
CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsockfac).build(); //sets up a httpclient for use with ssl socket factory
try {
HttpGet httpget = new HttpGet("https://localhost:8443"); //I had a tomcat server running on localhost which required the client to have their trust cert
System.out.println("Executing request " + httpget.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httpget);
try {
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
EntityUtils.consume(entity);
} finally {
response.close();
}
} finally {
httpclient.close();
}
You may run:
git log <SHA1>..HEAD --ancestry-path --merges
From comment of last commit in the output you may find original branch name
Example:
c---e---g--- feature
/ \
-a---b---d---f---h---j--- master
git log e..master --ancestry-path --merges
commit h
Merge: g f
Author: Eugen Konkov <>
Date: Sat Oct 1 00:54:18 2016 +0300
Merge branch 'feature' into master
axios.get(
'/app/export'
).then(response => {
const url = window.URL.createObjectURL(new Blob([response]));
const link = document.createElement('a');
link.href = url;
const fileName = `${+ new Date()}.csv`// whatever your file name .
link.setAttribute('download', fileName);
document.body.appendChild(link);
link.click();
link.remove();// you need to remove that elelment which is created before.
})
/path/to/laravel/storage/framework/
sessions views cache
Above is working solution
This worked for me.
In the CMD window, type the following command:
cd path-to-Git/bin # (for example,cd C:\Program Files\Git\bin)
bash
exec ssh-agent bash
ssh-add path/to/.ssh/id_rsa
You should use a mediator for this. Mediator is a common design pattern also known as Messenger in some of its implementations. It's a paradigm of type Register/Notify and enables your ViewModel and Views to communicate through a low-coupled messaging mecanism.
You should check out the google WPF Disciples group, and just search for Mediator. You will be much happy with the answers...
You can however start with this:
http://joshsmithonwpf.wordpress.com/2009/04/06/a-mediator-prototype-for-wpf-apps/
Enjoy !
Edit: you can see the answer to this problem with the MVVM Light Toolkit here:
http://mvvmlight.codeplex.com/Thread/View.aspx?ThreadId=209338
Why don't you start using OAuth with JSON WebTokens
http://projects.spring.io/spring-security-oauth/
OAuth2 is an standardized authorization protocol/framework. As per Official OAuth2 Specification:
You can find more info here
Add .*
to s
in your first line.
Try:
DELETE s.* FROM spawnlist s
INNER JOIN npc n ON s.npc_templateid = n.idTemplate
WHERE (n.type = "monster");
To use latest Async/Await features
https://www.npmjs.com/package/request-promise-native
npm install --save request
npm install --save request-promise-native
//code
async function getData (){
try{
var rp = require ('request-promise-native');
var options = {
uri:'https://reqres.in/api/users/2',
json:true
};
var response = await rp(options);
return response;
}catch(error){
throw error;
}
}
try{
console.log(getData());
}catch(error){
console.log(error);
}
Another option is CSVLogger: https://keras.io/callbacks/#csvlogger. It creates a csv file appending the result of each epoch. Even if you interrupt training, you get to see how it evolved.
Check this list:
Windows XP has the Windows Firewall which can interfere with network traffic if not configured properly. You can turn off the Windows Firewall, if you have administrator privileges, by accessing the Windows Firewall applet through the Control Panel. If your application works with the Windows Firewall turned off then the problem is probably due to the settings of the firewall.
We have an application which runs on multiple PCs communicating using UDP/IP and we have been doing experiments so that the application can run on a PC with a user who does not have administrator privileges. In order for our application to communicate between multiple PCs we have had to use an administrator account to modify the Windows Firewall settings.
In our application, one PC is designated as the server and the others are clients in a server/client group and there may be several groups on the same subnet.
The first change was to use the functionality of the Exceptions tab of the Windows Firewall applet to create an exception for the port that we use for communication.
We are using host name lookup so that the clients can locate their assigned server by using the computer name which is composed of a mnemonic prefix with a dash followed by an assigned terminal number (for instance SERVER100-1). This allows several servers with their assigned clients to coexist on the same subnet. The client uses its prefix to generate the computer name for the assigned server and to then use host name lookup to discover the IP address of the assigned server.
What we found is that the host name lookup using the computer name (assigned through the Computer Name tab of the System Properties dialog) would not work unless the server PC's Windows Firewall had the File and Printer Sharing Service port enabled.
So we had to make two changes: (1) setup an exception for the port we used for communication and (2) enable File and Printer Service in the Exceptions tab to allow for the host name lookup.
** EDIT **
You may also find this Microsoft Knowledge Base article on helpful on Windows XP networking.
And see this article on NETBIOS name resolution in Windows.
- (void)moveToPage {
NSUInteger pageIndex = ((ContentViewController *) [self.pageViewController.viewControllers objectAtIndex:0]).pageIndex;
pageIndex++;
ContentViewController *viewController = [self viewControllerAtIndex:pageIndex];
if (viewController == nil) {
return;
}
[self.pageViewController setViewControllers:@[viewController] direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:nil];
}
//now call this method
[self moveToPage];
I hope it works :)
I think the correct solution with support library 21 is the following
// action_bar is def resource of appcompat;
// if you have not provided your own toolbar I mean
Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
if (toolbar != null) {
// change home icon if you wish
toolbar.setLogo(this.getResValues().homeIconDrawable());
toolbar.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//catch here title and home icon click
}
});
}
Definitely Purify! I've used that to analyze some massive code bases (>3,000 kSLOC) and found it to be excellent.
You might like to look at this list at Wikipedia.
By the way, I've found memwatch to be useful. Thanks Johan!
It should run properly at cron also. Please check below things.
1- You are editing proper file to set cron.
2- You have given proper permission(execute permission) to script mean your script is executable.
because if you change your code with
def gukan(count):
while count!=100:
print(count)
count=count+3;
gukan(0)
count reaches 99 and then, at the next iteration 102.
So
count != 100
never evaluates true and the loop continues forever
If you want to count up to 100 you may use
def gukan(count):
while count <= 100:
print(count)
count=count+3;
gukan(0)
or (if you want 100 always printed)
def gukan(count):
while count <= 100:
print(count)
count=count+3;
if count > 100:
count = 100
gukan(0)
Please review the following documentation. It will definitely solve the problem. http://www.programmersought.com/article/55001874709/
I used the content+wrapper
approach ... but I did something different than mentioned so far: I made sure that my wrapper's boundaries did NOT line up with the content's boundaries in the direction that I wanted to be visible.
Important NOTE: It was easy enough to get the content+wrapper, same-bounds
approach to work on one browser or another depending on various css combinations of position
, overflow-*
, etc ... but I never could use that approach to get them all correct (Edge, Chrome, Safari, ...).
But when I had something like:
<div id="hack_wrapper" // created solely for this purpose
style="position:absolute; width:100%; height:100%; overflow-x:hidden;">
<div id="content_wrapper"
style="position:absolute; width:100%; height:15%; overflow:visible;">
... content with too-much horizontal content ...
</div>
</div>
... all browsers were happy.
It's built in Eclipse since ages. Which Eclipse version are you using? How were you trying to create a new JUnit test case? It should be File > New > Other > Java - JUnit - JUnit Test Case (you can eventually enter Filter text "junit").
Step 1:
select object_name, s.sid, s.serial#, p.spid
from v$locked_object l, dba_objects o, v$session s, v$process p
where l.object_id = o.object_id and l.session_id = s.sid and s.paddr = p.addr;
Step 2:
alter system kill session 'sid,serial#'; --`sid` and `serial#` get from step 1
More info: http://www.oracle-base.com/articles/misc/killing-oracle-sessions.php
We use something like this [use in one line]:
<a title="send to Facebook"
href="http://www.facebook.com/sharer.php?s=100&p[title]=YOUR_TITLE&p[summary]=YOUR_SUMMARY&p[url]=YOUR_URL&p[images][0]=YOUR_IMAGE_TO_SHARE_OBJECT"
target="_blank">
<span>
<img width="14" height="14" src="'icons/fb.gif" alt="Facebook" /> Facebook
</span>
</a>
private void txt_invoice_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
txt_date.Focus();
}
private void txt_date_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
txt_patientname.Focus();
}
}
Using Moment library, see their website -> https://momentjs.com/timezone/docs/#/using-timezones/converting-to-zone/
i notice they also user their own library in their website, so you can have a try using the browser console before installing it
moment().tz(String);
The moment#tz mutator will change the time zone and update the offset.
moment("2013-11-18").tz("America/Toronto").format('Z'); // -05:00
moment("2013-11-18").tz("Europe/Berlin").format('Z'); // +01:00
This information is used consistently in other operations, like calculating the start of the day.
var m = moment.tz("2013-11-18 11:55", "America/Toronto");
m.format(); // 2013-11-18T11:55:00-05:00
m.startOf("day").format(); // 2013-11-18T00:00:00-05:00
m.tz("Europe/Berlin").format(); // 2013-11-18T06:00:00+01:00
m.startOf("day").format(); // 2013-11-18T00:00:00+01:00
Without an argument, moment#tz returns:
the time zone name assigned to the moment instance or
undefined if a time zone has not been set.
var m = moment.tz("2013-11-18 11:55", "America/Toronto");
m.tz(); // America/Toronto
var m = moment.tz("2013-11-18 11:55");
m.tz() === undefined; // true
In Bash 4:
name="Ricardo"
read -e -i "$name" -p "Please enter your name: " input
name="${input:-$name}"
This displays the name after the prompt like this:
Please enter your name: Ricardo
with the cursor at the end of the name and allows the user to edit it. The last line is optional and forces the name to be the original default if the user erases the input or default (submitting a null).
My Example like this
var n =9;
var checkval=('00'+n).slice(-2);
console.log(checkval)
and the output is 09
Using the credentials helper command-line option:
git -c credential.helper='!f() { echo "password=mysecretpassword"; }; f' fetch origin
Here is example to draw stroke circle canvas
val paint = Paint().apply {
color = Color.RED
style = Paint.Style.STROKE
strokeWidth = 10f
}
override fun onDraw(canvas: Canvas?) {
super.onDraw(canvas)
canvas?.drawCircle(200f, 100f, 100f, paint)
}
Result
Example to draw solid circle canvas
val paint = Paint().apply {
color = Color.RED
}
override fun onDraw(canvas: Canvas?) {
super.onDraw(canvas)
canvas?.drawCircle(200f, 100f, 100f, paint)
}
Result
Hope it help
If you want a date ($date) to get expired in some interval for example a token expiration date when performing a password reset, here's how you can do:
$date = $row->expireDate;
$date->add(new DateInterval('PT24H')); // adds 24 hours
$now = new \DateTime();
if($now < $date) { /* expired after 24 hours */ }
But in your case you could do the comparison just as the following:
$today = new DateTime('Y-m-d');
$date = $row->expireDate;
if($today < $date) { /* do something */ }
Install
ext install npm script runner
Use (two ways)
>npm
, select run script
, select the desired task Update: Since version 1.3 Visual Studio Code has integrated terminal. To open it, use any of these methods:
View:Toggle Integrated Terminal
command.You can remove the application's persistent domain like this:
NSString *appDomain = [[NSBundle mainBundle] bundleIdentifier];
[[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain];
In Swift 3 and later:
if let bundleID = Bundle.main.bundleIdentifier {
UserDefaults.standard.removePersistentDomain(forName: bundleID)
}
This is similar to the answer by @samvermette but is a little bit cleaner IMO.
Here is a code example that proves the fault in the class. I've checked: the problem occurs when using parse and also when you are only using format.
I my case the problem was a residual dump file in the database directory. That file was probably generated during a backup script test I had been working on. Once I manually deleted the file I could then drop the database.
[RegularExpression(@"^[A-Za-z0-9]+@([a-zA-Z]+\\.)+[a-zA-Z]{2,6}]&")]
By default, oracle date subtraction returns a result in # of days.
So just multiply by 24 to get # of hours, and again by 60 for # of minutes.
Example:
select
round((second_date - first_date) * (60 * 24),2) as time_in_minutes
from
(
select
to_date('01/01/2008 01:30:00 PM','mm/dd/yyyy hh:mi:ss am') as first_date
,to_date('01/06/2008 01:35:00 PM','mm/dd/yyyy HH:MI:SS AM') as second_date
from
dual
) test_data
I use this, works like a charm. No need to have any functions, just inline with your link(s)
onclick="javascript:return confirm('Are you sure you want to delete this comment?')"
I can't remember where I came across this script, but I've been using it with XCloner to move my WP multisites.
<?php
// Setup the associative array for replacing the old string with new string
$replace_array = array( 'FIND' => 'REPLACE', 'FIND' => 'REPLACE');
$mysql_link = mysql_connect( 'localhost', 'USERNAME', 'PASSWORD' );
if( ! $mysql_link) {
die( 'Could not connect: ' . mysql_error() );
}
$mysql_db = mysql_select_db( 'DATABASE', $mysql_link );
if(! $mysql_db ) {
die( 'Can\'t select database: ' . mysql_error() );
}
// Traverse all tables
$tables_query = 'SHOW TABLES';
$tables_result = mysql_query( $tables_query );
while( $tables_rows = mysql_fetch_row( $tables_result ) ) {
foreach( $tables_rows as $table ) {
// Traverse all columns
$columns_query = 'SHOW COLUMNS FROM ' . $table;
$columns_result = mysql_query( $columns_query );
while( $columns_row = mysql_fetch_assoc( $columns_result ) ) {
$column = $columns_row['Field'];
$type = $columns_row['Type'];
// Process only text-based columns
if( strpos( $type, 'char' ) !== false || strpos( $type, 'text' ) !== false ) {
// Process all replacements for the specific column
foreach( $replace_array as $old_string => $new_string ) {
$replace_query = 'UPDATE ' . $table .
' SET ' . $column . ' = REPLACE(' . $column .
', \'' . $old_string . '\', \'' . $new_string . '\')';
mysql_query( $replace_query );
}
}
}
}
}
mysql_free_result( $columns_result );
mysql_free_result( $tables_result );
mysql_close( $mysql_link );
echo 'Done!';
?>
Way later but still worth mentioning is that you can also use variables to output values in the SET clause of an UPDATE or in the fields of a SELECT;
DECLARE @val1 int;
DECLARE @val2 int;
UPDATE [dbo].[PortalCounters_TEST]
SET @val1 = NextNum, @val2 = NextNum = NextNum + 1
WHERE [Condition] = 'unique value'
SELECT @val1, @val2
In the example above @val1 has the before value and @val2 has the after value although I suspect any changes from a trigger would not be in val2 so you'd have to go with the output table in that case. For anything but the simplest case, I think the output table will be more readable in your code as well.
One place this is very helpful is if you want to turn a column into a comma-separated list;
DECLARE @list varchar(max) = '';
DECLARE @comma varchar(2) = '';
SELECT @list = @list + @comma + County, @comma = ', ' FROM County
print @list
Dynamic programming is a technique for solving problems with overlapping sub problems. A dynamic programming algorithm solves every sub problem just once and then Saves its answer in a table (array). Avoiding the work of re-computing the answer every time the sub problem is encountered. The underlying idea of dynamic programming is: Avoid calculating the same stuff twice, usually by keeping a table of known results of sub problems.
The seven steps in the development of a dynamic programming algorithm are as follows:
A bit late, and not a complete solution either, but for everyone who gets hit by this error without any obvious reason (having all the references defined, etc.) This thread put me on the correct track though. The issue seems to originate from some caching related bug in MS Office VBA Editor.
After making some changes to a project including about 40 forms with code modules plus 40 classes and some global modules in MS Access 2016 the compilation failed.
Commenting out code was obviously not an option, nor did exporting and re-importing all the 80+ files seem reasonable. Concentrating on what had recently been changed, my suspicions focused on removal of one class module.
Having no better ideas I re-cereated an empty class module with the same name that had previously been removed. And voliá the error was gone! It was even possible to remove the unused class module again without the error reappearing, until any changes were saved to a form module which previously had contained a WithEvents declaration involving the now removed class.
Not completely sure if WithEvents declaration really is what triggers the error even after the declaration has been removed. And no clues how to actually find out (without having information about the development history) which Form might be the culprit...
But what finally solved the issue was:
You just make div
s like this:
<div style="width:100px; height: 100px; border:1px solid; overflow:hidden; ">
<br/>
<div style="position:inherit; width: 200px; height:200px; background:yellow;">
<br/>
<div style="position:absolute; width: 500px; height:50px; background:Pink; z-index: 99;">
<br/>
</div>
</div>
</div>
I hope this code will help you :)
Here's a nice way using a bit of reflection to get a version of a DLL containing a particular class:
var ver = System.Reflection.Assembly.GetAssembly(typeof(!Class!)).GetName().Version;
Just replace !Class! with the name of a class which is defined in the DLL you wish to get the version of.
This is my preferred method because if I move the DLLs around for different deploys I don't have to change the filepath.
Try this after curl_exec to see what's the problem:
print curl_error($ch);
If it's print something like 'malformed' then check your URL format.
If you are actually looking for the index number (and not the value) of the selected option then it would be
document.forms[0].elements["CCards"].selectedIndex
/* You may need to change document.forms[0] to reference the correct form */
or using jQuery
$('select[name="CCards"]')[0].selectedIndex
Current thinking seems to be to "tolerate" nulls, that is, to allow them in general, although some operations are less tolerant and may end up throwing NPE. See the discussion of nulls on the Lambda Libraries expert group mailing list, specifically this message. Consensus around option #3 subsequently emerged (with a notable objection from Doug Lea). So yes, the OP's concern about pipelines blowing up with NPE is valid.
It's not for nothing that Tony Hoare referred to nulls as the "Billion Dollar Mistake." Dealing with nulls is a real pain. Even with classic collections (without considering lambdas or streams) nulls are problematic. As fge mentioned in a comment, some collections allow nulls and others do not. With collections that allow nulls, this introduces ambiguities into the API. For example, with Map.get(), a null return indicates either that the key is present and its value is null, or that the key is absent. One has to do extra work to disambiguate these cases.
The usual use for null is to denote the absence of a value. The approach for dealing with this proposed for Java SE 8 is to introduce a new java.util.Optional
type, which encapsulates the presence/absence of a value, along with behaviors of supplying a default value, or throwing an exception, or calling a function, etc. if the value is absent. Optional
is used only by new APIs, though, everything else in the system still has to put up with the possibility of nulls.
My advice is to avoid actual null references to the greatest extent possible. It's hard to see from the example given how there could be a "null" Otter. But if one were necessary, the OP's suggestions of filtering out null values, or mapping them to a sentinel object (the Null Object Pattern) are fine approaches.
--- Shameless plug ---
I have added this function to a library I created
vanillajs-browser-helpers: https://github.com/Tokimon/vanillajs-browser-helpers/blob/master/inView.js
-------------------------------
Well BenM stated, you need to detect the height of the viewport + the scroll position to match up with your top position. The function you are using is ok and does the job, though its a bit more complex than it needs to be.
If you don't use jQuery
then the script would be something like this:
function posY(elm) {
var test = elm, top = 0;
while(!!test && test.tagName.toLowerCase() !== "body") {
top += test.offsetTop;
test = test.offsetParent;
}
return top;
}
function viewPortHeight() {
var de = document.documentElement;
if(!!window.innerWidth)
{ return window.innerHeight; }
else if( de && !isNaN(de.clientHeight) )
{ return de.clientHeight; }
return 0;
}
function scrollY() {
if( window.pageYOffset ) { return window.pageYOffset; }
return Math.max(document.documentElement.scrollTop, document.body.scrollTop);
}
function checkvisible( elm ) {
var vpH = viewPortHeight(), // Viewport Height
st = scrollY(), // Scroll Top
y = posY(elm);
return (y > (vpH + st));
}
Using jQuery is a lot easier:
function checkVisible( elm, evalType ) {
evalType = evalType || "visible";
var vpH = $(window).height(), // Viewport Height
st = $(window).scrollTop(), // Scroll Top
y = $(elm).offset().top,
elementHeight = $(elm).height();
if (evalType === "visible") return ((y < (vpH + st)) && (y > (st - elementHeight)));
if (evalType === "above") return ((y < (vpH + st)));
}
This even offers a second parameter. With "visible" (or no second parameter) it strictly checks whether an element is on screen. If it is set to "above" it will return true when the element in question is on or above the screen.
See in action: http://jsfiddle.net/RJX5N/2/
I hope this answers your question.
-- IMPROVED VERSION--
This is a lot shorter and should do it as well:
function checkVisible(elm) {
var rect = elm.getBoundingClientRect();
var viewHeight = Math.max(document.documentElement.clientHeight, window.innerHeight);
return !(rect.bottom < 0 || rect.top - viewHeight >= 0);
}
with a fiddle to prove it: http://jsfiddle.net/t2L274ty/1/
And a version with threshold
and mode
included:
function checkVisible(elm, threshold, mode) {
threshold = threshold || 0;
mode = mode || 'visible';
var rect = elm.getBoundingClientRect();
var viewHeight = Math.max(document.documentElement.clientHeight, window.innerHeight);
var above = rect.bottom - threshold < 0;
var below = rect.top - viewHeight + threshold >= 0;
return mode === 'above' ? above : (mode === 'below' ? below : !above && !below);
}
and with a fiddle to prove it: http://jsfiddle.net/t2L274ty/2/
C++20 std::format
This great new C++ library feature has the advantage of not affecting the state of std::cout
as std::setprecision
does:
#include <format>
#include <string>
int main() {
std::cout << std::format("{:.2} {:.3}\n", 3.1415, 3.1415);
}
Expected output:
3.14 3.145
The as mentioned at https://stackoverflow.com/a/65329803/895245 not if you don't pass the precision explicitly it prints the shortest decimal representation with a round-trip guarantee. TODO understand in more detail how it compares to: dbl::max_digits10
as shown at https://stackoverflow.com/a/554134/895245 with {:.{}}
:
#include <format>
#include <limits>
#include <string>
int main() {
std::cout << std::format("{:.{}}\n",
3.1415926535897932384626433, dbl::max_digits10);
}
See also:
Now that TypeScript 2.2 supports Mixins through Class expressions we have a much better way to express Mixins on Components. Mind you that you can also use Component inheritance since angular 2.3 (discussion) or a custom decorator as discussed in other answers here. However, I think Mixins have some properties that make them preferable for reusing behavior across components:
I strongly suggest you read the TypeScript 2.2 announcement above to understand how Mixins work. The linked discussions in angular GitHub issues provide additional detail.
You'll need these types:
export type Constructor<T> = new (...args: any[]) => T;
export class MixinRoot {
}
And then you can declare a Mixin like this Destroyable
mixin that helps components keep track of subscriptions that need to be disposed in ngOnDestroy
:
export function Destroyable<T extends Constructor<{}>>(Base: T) {
return class Mixin extends Base implements OnDestroy {
private readonly subscriptions: Subscription[] = [];
protected registerSubscription(sub: Subscription) {
this.subscriptions.push(sub);
}
public ngOnDestroy() {
this.subscriptions.forEach(x => x.unsubscribe());
this.subscriptions.length = 0; // release memory
}
};
}
To mixin Destroyable
into a Component
, you declare your component like this:
export class DashboardComponent extends Destroyable(MixinRoot)
implements OnInit, OnDestroy { ... }
Note that MixinRoot
is only necessary when you want to extend
a Mixin composition. You can easily extend multiple mixins e.g. A extends B(C(D))
. This is the obvious linearization of mixins I was talking about above, e.g. you're effectively composing an inheritnace hierarchy A -> B -> C -> D
.
In other cases, e.g. when you want to compose Mixins on an existing class, you can apply the Mixin like so:
const MyClassWithMixin = MyMixin(MyClass);
However, I found the first way works best for Components
and Directives
, as these also need to be decorated with @Component
or @Directive
anyway.
It's like you are trying to access an object which is null
. Consider below example:
TypeA objA;
At this time you have just declared this object but not initialized or instantiated. And whenever you try to access any property or method in it, it will throw NullPointerException
which makes sense.
See this below example as well:
String a = null;
System.out.println(a.toString()); // NullPointerException will be thrown
To be able to pretty print from the command line and be able to have control over the indentation etc. you can set up an alias similar to this:
alias jsonpp="python -c 'import sys, json; print json.dumps(json.load(sys.stdin), sort_keys=True, indent=2)'"
And then use the alias in one of these ways:
cat myfile.json | jsonpp
jsonpp < myfile.json
If the XML module is not installed, install it.
Current version 5.6 on ubuntu 14.04:
sudo apt-get install php5.6-xml
And don't forget to run sudo service apache2 restart command after it
Zulhilmi Zainudi
I don't know if this has changed. But from my experience. nested elements have a maximum opacity equal to the fathers.
Which mean:
<div id="a">
<div id="b">
</div></div>
Div#a has 0.6 opacity
div#b has 1 opacity
Has #b is within #a then it's maximum opacity is always 0.6
If #b would have 0.5 opacity. In reallity it would be 0.6*0.5 == 0.3 opacity
.circle {
border-radius: 50%;
width: 500px;
height: 500px;
background: red;
}
<div class="circle"></div>
see this FIDDLE
this.setState({abc: {xyz: 'new value'}});
will NOT work, as state.abc
will be entirely overwritten, not merged.
This works for me:
this.setState((previousState) => {
previousState.abc.xyz = 'blurg';
return previousState;
});
Unless I'm reading the docs wrong, Facebook recommends the above format. https://facebook.github.io/react/docs/component-api.html
Additionally, I guess the most direct way without mutating state is to directly copy by using the ES6 spread/rest operator:
const newState = { ...this.state.abc }; // deconstruct state.abc into a new object-- effectively making a copy
newState.xyz = 'blurg';
this.setState(newState);
This question has been asked many times on this site and the definitive answer is: NO, you can't connect an Android phone to an iPhone over Bluetooth, and YES Apple has restrictions that prevent this.
Some possible alternatives:
Coolest alternative: use the Bump API. It has iOS and Android support and really easy to integrate. For small payloads this can be the most convenient solution.
Details on why you can't connect an arbitrary device to the iPhone. iOS allows only some bluetooth profiles to be used without the Made For iPhone (MFi) certification (HPF, A2DP, MAP...). The Serial Port Profile that you would require to implement the communication is bound to MFi membership. Membership to this program provides you to the MFi authentication module that has to be added to your hardware and takes care of authenticating the device towards the iPhone. Android phones don't have this module, so even though the physical connection may be possible to build up, the authentication step will fail. iPhone to iPhone communication is possible as both ends are able to authenticate themselves.
In .Net Core, follow the instructions at https://docs.microsoft.com/en-us/aspnet/core/security/enforcing-ssl
In your startup.cs add the following:
// Requires using Microsoft.AspNetCore.Mvc;
public void ConfigureServices(IServiceCollection services)
{
services.Configure<MvcOptions>(options =>
{
options.Filters.Add(new RequireHttpsAttribute());
});`enter code here`
To redirect Http to Https, add the following in the startup.cs
// Requires using Microsoft.AspNetCore.Rewrite;
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
var options = new RewriteOptions()
.AddRedirectToHttps();
app.UseRewriter(options);
For some projects it's easier to set your target to es6
in your tsconfig.json
.
{
"compilerOptions": {
"target": "es6",
...
There are two ways to go about this. You can either use the IDE to generate a WSDL, or you can do it via the command line.
1. To create it via the IDE:
In the solution explorer pane, right click on the project that you would like to add the Service to:
Then, you can enter the path to your service WSDL and hit go:
2. To create it via the command line:
Open a VS 2010 Command Prompt (Programs -> Visual Studio 2010 -> Visual Studio Tools)
Then execute:
WSDL /verbose C:\path\to\wsdl
WSDL.exe will then output a .cs file for your consumption.
If you have other dependencies that you received with the file, such as xsd's, add those to the argument list:
WSDL /verbose C:\path\to\wsdl C:\path\to\some\xsd C:\path\to\some\xsd
If you need VB output, use /language:VB
in addition to the /verbose
.
Just add this sentence in your build.gradle:
compile 'com.android.support:design:23.1.1'
We are also getting the same error while we are trying to access a same resource with in milliseconds. Like if i try to POST
some data to www.abc.com/blog
and with in milliseconds an other request will also go for the same resource i.e. www.abc.com/blog
from the same user. So it'll give the 409
error.
As other users have pointed out, we use expression()
. I'd like to answer the original question which involves a comma in the subscript:
How can I write v 1,2 with 1,2 as subscripts?
plot(1:10, 11:20 , main=expression(v["1,2"]))
Also, I'd like to add the reference for those looking to find the full expression
syntax in R
plotting: For more information see the ?plotmath
help page. Running demo(plotmath)
will showcase many expressions and relevant syntax.
Remember to use *
to join different types of text within an expression.
Here is some of the sample output from demo(plotmath)
:
What worked for me was a combination of the answers from Nicole Finnie and Ciro Santilli along with some answers from elsewhere.
We will need to do two things: activate ssh on the pi, and configure the pi to use a static ip.
Add a file called ssh
in the boot partition of the sd card (not the /boot
folder in the root partition). This is well documented other places.
Open /etc/dhcpcd.conf
on the pi's SD-card, and uncomment the example for a static ip (starts around line 40). Set the addresses to
# Example static IP configuration:
interface eth0
static ip_address=10.42.0.182/24
static routers=10.42.0.1
static domain_name_servers=10.42.0.1 8.8.8.8 fd51:42f8:caae:d92e::1
First, make sure you have networkmanager
(with GUI) installed on your laptop. Then, make sure dnsmasq
is not running as a service:
systemctl status dnsmasq
If this command prints that the service is stopped, then you're good.
Next we have to config networkmanager
. Open /etc/NetworkManager/NetworkManager.conf
and add the following two lines at the top:
[main]
DNS=dnsmasq
Then reboot. This step might not be necessary. It might be sufficient to restart the NetworkManager
service. Now go to the NetworkManager
GUI (usually accessed by an icon in the corner of the screen) and choose Edit Connections...
In the window that pops up, click the +
icon to create a new connection. Choose Ethernet
as the type and press Create...
. Go to the IPv4 Settings
tab and select the method Shared to other computers
. Give the connection a good name and save.
Connect the Raspberry Pi and make sure your laptop is using your new connection as its ethernet connection. If it is, your pi should now have an ip given to it by your pc. You can find this by first running ifconfig
. This should give you several blocks of text, one for each network interface. You're interested in the one that is something like enp0s25
or eth0
. It should have a line that reads something similar to
inet 10.42.0.1 netmask 255.255.255.0 broadcast 10.42.0.255
look at the broadcast address (in this case 10.42.0.255
). If it is different than mine, power off the pi and put the SD card back in your laptop to change the static ip_address
to something where the first three numbers are the same as in your broadcast address. Also change the static routers
and the first of the domain_name_servers
to your laptop's inet
address. Power the pi back on and connect it. Run ifconfig
again to see that the addresses have not changed.
ssh [email protected]
If you get connection refused
, the pi isn't running an ssh
server. If you get host unreachable
, I'm sorry.
Hope this helps someone!
Open the httpd.conf file and search for
"rewrite"
, then remove
"#"
at the starting of the line,so the line looks like.
LoadModule rewrite_module modules/mod_rewrite.so
then restart the wamp.
This works for me https://www.nuget.org/packages/ASquare.WindowsTaskScheduler/
It is nicely designed Fluent API.
//This will create Daily trigger to run every 10 minutes for a duration of 18 hours
SchedulerResponse response = WindowTaskScheduler
.Configure()
.CreateTask("TaskName", "C:\\Test.bat")
.RunDaily()
.RunEveryXMinutes(10)
.RunDurationFor(new TimeSpan(18, 0, 0))
.SetStartDate(new DateTime(2015, 8, 8))
.SetStartTime(new TimeSpan(8, 0, 0))
.Execute();
<div :style="{'background-image': 'url(' + require('./assets/media/img.jpg') + ')'}"></div>
Compare the length using lengthB and length function in oracle.
SELECT * FROM test WHERE length(sampletext) <> lengthb(sampletext)
My situation was different I believe because non of the above solutions di work for me. Let me share my situation.
I try to run the code I modified in the main function but the error pops out. I tried the shift_f6, specifically rebuild. Nothing works.
Solution: I took the project properties and saw the 'Source Package Folder' mappings in the Sources branch was blank. I mapped it and voila it worked.
Now anyone might think that was very silly of me. Although I am new to Java and Netbeans this is not the first time I am importing sample projects and I saw all of them had the properties similar. The only difference I saw was that the main class was not having the name as the project which I believe is a java convention. I am using JDK7u51 (latest till date), is it causing the issue? I have no idea. But I am happy the project is running fine now.
The line
SELECT @Prefix + LEN(CAST(@maxCode AS VARCHAR(10))+1) + CAST(@maxCode AS VARCHAR(100))
is wrong.
@Prefix
is 'J'
and LEN(...anything...)
is an int
, hence the type mismatch.
It seems to me, you actually want to do,
SELECT
@maxCode = MAX(
CAST(SUBSTRING(
Voucher_No,
@startFrom + 1,
LEN(Voucher_No) - (@startFrom + 1)) AS INT)
FROM
dbo.Journal_Entry;
SELECT @Prefix + CAST(@maxCode AS VARCHAR(10));
but, I couldn't say. If you illustrated before and after data, it would help.
It is a class that extends another class.
example taken from https://www.java-tips.org/java-se-tips-100019/24-java-lang/784-what-is-a-java-subclass.html, Cat is a sub class of Animal :-)
public class Animal {
public static void hide() {
System.out.println("The hide method in Animal.");
}
public void override() {
System.out.println("The override method in Animal.");
}
}
public class Cat extends Animal {
public static void hide() {
System.out.println("The hide method in Cat.");
}
public void override() {
System.out.println("The override method in Cat.");
}
public static void main(String[] args) {
Cat myCat = new Cat();
Animal myAnimal = (Animal)myCat;
myAnimal.hide();
myAnimal.override();
}
}
You can (A) change the markup to not use paragraphs
<span>Text</span>
<br>
<ul>
<li>One</li>
</ul>
<span>Text 2</span>
Or (B) change the css
p{margin:0px;}
Demos here: http://jsfiddle.net/ZnpVu/1
Guzzle implements PSR-7. That means that it will by default store the body of a message in a Stream that uses PHP temp streams. To retrieve all the data, you can use casting operator:
$contents = (string) $response->getBody();
You can also do it with
$contents = $response->getBody()->getContents();
The difference between the two approaches is that getContents
returns the remaining contents, so that a second call returns nothing unless you seek the position of the stream with rewind
or seek
.
$stream = $response->getBody();
$contents = $stream->getContents(); // returns all the contents
$contents = $stream->getContents(); // empty string
$stream->rewind(); // Seek to the beginning
$contents = $stream->getContents(); // returns all the contents
Instead, usings PHP's string casting operations, it will reads all the data from the stream from the beginning until the end is reached.
$contents = (string) $response->getBody(); // returns all the contents
$contents = (string) $response->getBody(); // returns all the contents
Documentation: http://docs.guzzlephp.org/en/latest/psr7.html#responses
It is possible to use a handler to do this, even in MVC4. Here's an example from one i made earlier:
public class ImageHandler : IHttpHandler
{
byte[] bytes;
public void ProcessRequest(HttpContext context)
{
int param;
if (int.TryParse(context.Request.QueryString["id"], out param))
{
using (var db = new MusicLibContext())
{
if (param == -1)
{
bytes = File.ReadAllBytes(HttpContext.Current.Server.MapPath("~/Images/add.png"));
context.Response.ContentType = "image/png";
}
else
{
var data = (from x in db.Images
where x.ImageID == (short)param
select x).FirstOrDefault();
bytes = data.ImageData;
context.Response.ContentType = "image/" + data.ImageFileType;
}
context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
context.Response.BinaryWrite(bytes);
context.Response.Flush();
context.Response.End();
}
}
else
{
//image not found
}
}
public bool IsReusable
{
get
{
return false;
}
}
}
In the view, i added the ID of the photo to the query string of the handler.
Try this to read a file:
BufferedReader reader = null;
try {
File file = new File("sample-file.dat");
reader = new BufferedReader(new FileReader(file));
String line;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
update your CSS to the following: this should fix
.page {
width: 280px;
border:solid 1px blue;
overflow-x: auto;
}
Using jQuery you can use contents()
. For example:
var inside = $('#one').contents();
HTMLElement.prototype.serialize = function(){
var obj = {};
var elements = this.querySelectorAll( "input, select, textarea" );
for( var i = 0; i < elements.length; ++i ) {
var element = elements[i];
var name = element.name;
var value = element.value;
if( name ) {
obj[ name ] = value;
}
}
return JSON.stringify( obj );
}
To use like this:
var dataToSend = document.querySelector("form").serialize();
I hope I have helped.
There are a few reasons:
I find it aids maintenence to separate markup, i.e. the HTML and client-side scripts. For example, jQuery makes it easy to add event handlers programatically.
The example you give would be broken in any user agent that doesn't support javascript, or has javascript turned off. The concept of progressive enhancement would encourage a simple hyperlink to /map/
for user agents without javascript, then adding a click handler prgramatically for user agents that support javascript.
For example:
Markup:
<a id="example" href="/map/">link</a>
Javascript:
$(document).ready(function(){
$("#example").click(function(){
popup('/map/', 300, 300, 'map');
return false;
});
})
<meta http-equiv="refresh" content="3;url=http://www.google.com/" />
Maybe this will help others in the future - I had the same error while trying to multiple a float and a list of floats. The thing is that everyone here talked about multiplying a float with a string (but here all my element were floats all along) so the problem was actually using the * operator on a list.
For example:
import math
import numpy as np
alpha = 0.2
beta=1-alpha
C = (-math.log(1-beta))/alpha
coff = [0.0,0.01,0.0,0.35,0.98,0.001,0.0]
coff *= C
The error:
coff *= C
TypeError: can't multiply sequence by non-int of type 'float'
The solution - convert the list to numpy array:
coff = np.asarray(coff) * C
Basically here we are dealing with communication between Fragments. Communication between fragments can never be directly possible. It involves activity under the context of which both the fragments are created.
You need to create an interface in the sending fragment and implement the interface in the activity which will reprieve the message and transfer to the receiving fragment.
As the previous answers saids, try to move the state to a top component and modify the state through callbacks passed to it's children.
In case that you really need to access to a child state that is declared as a functional component (hooks) you can declare a ref in the parent component, then pass it as a ref attribute to the child but you need to use React.forwardRef and then the hook useImperativeHandle to declare a function you can call in the parent component.
Take a look at the following example:
const Parent = () => {
const myRef = useRef();
return <Child ref={myRef} />;
}
const Child = React.forwardRef((props, ref) => {
const [myState, setMyState] = useState('This is my state!');
useImperativeHandle(ref, () => ({getMyState: () => {return myState}}), [myState]);
})
Then you should be able to get myState in the Parent component by calling:
myRef.current.getMyState();
I would suggest:
std::cout << setbase(16) << 32;
Taken from: http://www.cprogramming.com/tutorial/iomanip.html
I'm using typescript with vue, but this is how I went about it
<template><div><img :src="MyImage" /></div></template>
<script lang="ts">
import { Vue } from 'vue-property-decorator';
export default class MyPage extends Vue {
MyImage = "../assets/images/myImage.png";
}
</script>
I am on Laravel 7.25 and I don't know if it supports on previous versions or not but Its pretty good.
public function joinSub($query, $as, $first, $operator = null, $second = null, $type = 'inner', $where = false)
Showing/Getting the user ID and the total number of posts by them left joining two tables users and posts.
return DB::table('users')
->joinSub('select user_id,count(id) noOfPosts from posts group by user_id', 'totalPosts', 'users.id', '=', 'totalPosts.user_id', 'left')
->select('users.name', 'totalPosts.noOfPosts')
->get();
If you don't wanna mention 'left' for leftjoin then you can use another prebuilt function
public function leftJoinSub($query, $as, $first, $operator = null, $second = null)
{
return $this->joinSub($query, $as, $first, $operator, $second, 'left');
}
And yeah, it actually calls the same function but it passes the join type itself. You can apply the same logic for other joins i.e. righJoinSub(...) etc.
If the "Customer don't want to install and buy MS Office on a server not at any price", then you cannot use Excel ... But I cannot get the trick: it's all about one basic Office licence which costs something like 150 USD ... And I guess that spending time finding an alternative will cost by far more than this amount!
You might get this error due to couple of reasons. To fix this quickly please follow below steps,
First find the java location. To get a list of your installed Java platforms, run the following command from the terminal:
$ sudo update-alternatives --config java
Now set JAVA_HOME and PATH,
$ export JAVA_HOME=<java_home>
$ export PATH=$JAVA_HOME/jre/bin:$PATH
Create the symlink
$ sudo ln -s <java_home>/jre <java_symlink_path>
When we take your case as a example :
$ sudo ln -s /usr/lib/jvm/java-7-oracle/jre /usr/lib/jvm/java-7-oracle/jre/bin/java
Above command will create the symlink location where the system is trying to find in your issue.
Finally do the
$ mvn --version
Give ID to legend and apply css. Like add id hello to legend() the css is as follw:
#legend legend {
display: block;
width: 100%;
padding: 0;
margin-bottom: 20px;
font-size: 21px;
line-height: inherit;
color: #333333;
border: 0;
border-bottom: 1px solid #e5e5e5;
}
Your "listen" directives are wrong. See this page: http://nginx.org/en/docs/http/server_names.html.
They should be
server {
listen 80;
server_name www.domain1.com;
root /var/www/domain1;
}
server {
listen 80;
server_name www.domain2.com;
root /var/www/domain2;
}
Note, I have only included the relevant lines. Everything else looked okay but I just deleted it for clarity. To test it you might want to try serving a text file from each server first before actually serving php. That's why I left the 'root' directive in there.
Subclass UILabel and override drawTextInRect:
like this:
- (void)drawTextInRect:(CGRect)rect
{
UIEdgeInsets insets = {0, 10, 0, 0};
return [super drawTextInRect:UIEdgeInsetsInsetRect(rect, insets)];
}
I ended up here because SelectListItem is no longer picking the selected value correctly. To fix it, I changed the usage of EditorFor for a "manual" approach:
<select id="Role" class="form-control">
@foreach (var role in ViewBag.Roles)
{
if (Model.Roles.First().RoleId == role.Value)
{
<option value="@role.Value" selected>@role.Text</option>
}
else
{
<option value="@role.Value">@role.Text</option>
}
}
</select>
Hope it helps someone.
File file=new File(getFilePath(imageUri.getValue()));
boolean b= file.delete();
not working in my case. The issue has been resolved by using below code-
ContentResolver contentResolver = getContentResolver ();
contentResolver.delete (uriDelete,null ,null );
MockitoAnnotations & the runner have been well discussed above, so I'm going to throw in my tuppence for the unloved:
XXX mockedXxx = mock(XXX.class);
I use this because I find it a little bit more descriptive and I prefer (not out right ban) unit tests not to use member variables as I like my tests to be (as much as they can be) self contained.
As all have mentioned it is
request.getHeader("referer");
I would like to add some more details about security aspect of referer header in contrast with accepted answer. In Open Web Application Security Project(OWASP) cheat sheets, under Cross-Site Request Forgery (CSRF) Prevention Cheat Sheet it mentions about importance of referer header.
More importantly for this recommended Same Origin check, a number of HTTP request headers can't be set by JavaScript because they are on the 'forbidden' headers list. Only the browsers themselves can set values for these headers, making them more trustworthy because not even an XSS vulnerability can be used to modify them.
The Source Origin check recommended here relies on three of these protected headers: Origin, Referer, and Host, making it a pretty strong CSRF defense all on its own.
You can refer Forbidden header list here. User agent(ie:browser) has the full control over these headers not the user.
I suggest you to read the Enumeration: Traversing a Collection’s Elements part of the Collections Programming Guide for Cocoa. There is a sample code for your need.
just run the android sdk manager , go to tools then obtions and a new window will apears mark the three checkboxes at the bottom and close it it worked for me
Since you gave me nothing to start on, here is a simple example.
Example implementation:
function incrementValue()
{
var value = parseInt(document.getElementById('number').value, 10);
value = isNaN(value) ? 0 : value;
value++;
document.getElementById('number').value = value;
}
Example Html
<form>
<input type="text" id="number" value="0"/>
<input type="button" onclick="incrementValue()" value="Increment Value" />
</form>
Try this function :)
string toLowerCase(string str) {
int str_len = str.length();
string final_str = "";
for(int i=0; i<str_len; i++) {
char character = str[i];
if(character>=65 && character<=92) {
final_str += (character+32);
} else {
final_str += character;
}
}
return final_str;
}
A very convenient way is readr::read_delim
-family. Taking the example from here:
Importing csv with multiple separators into R you can do it as follows:
txt <- 'OBJECTID,District_N,ZONE_CODE,COUNT,AREA,SUM
1,Bagamoyo,1,"136,227","8,514,187,500.000000000000000","352,678.813105723350000"
2,Bariadi,2,"88,350","5,521,875,000.000000000000000","526,307.288878142830000"
3,Chunya,3,"483,059","30,191,187,500.000000000000000","352,444.699742995200000"'
require(readr)
read_csv(txt) # = read_delim(txt, delim = ",")
Which results in the expected result:
# A tibble: 3 Ă— 6
OBJECTID District_N ZONE_CODE COUNT AREA SUM
<int> <chr> <int> <dbl> <dbl> <dbl>
1 1 Bagamoyo 1 136227 8514187500 352678.8
2 2 Bariadi 2 88350 5521875000 526307.3
3 3 Chunya 3 483059 30191187500 352444.7
[Note: edited to modernize ggplot syntax]
Your example is not reproducible since there is no ex1221new
(there is an ex1221
in Sleuth2
, so I guess that is what you meant). Also, you don't need (and shouldn't) pull columns out to send to ggplot
. One advantage is that ggplot
works with data.frame
s directly.
You can set the labels with xlab()
and ylab()
, or make it part of the scale_*.*
call.
library("Sleuth2")
library("ggplot2")
ggplot(ex1221, aes(Discharge, Area)) +
geom_point(aes(size=NO3)) +
scale_size_area() +
xlab("My x label") +
ylab("My y label") +
ggtitle("Weighted Scatterplot of Watershed Area vs. Discharge and Nitrogen Levels (PPM)")
ggplot(ex1221, aes(Discharge, Area)) +
geom_point(aes(size=NO3)) +
scale_size_area("Nitrogen") +
scale_x_continuous("My x label") +
scale_y_continuous("My y label") +
ggtitle("Weighted Scatterplot of Watershed Area vs. Discharge and Nitrogen Levels (PPM)")
An alternate way to specify just labels (handy if you are not changing any other aspects of the scales) is using the labs
function
ggplot(ex1221, aes(Discharge, Area)) +
geom_point(aes(size=NO3)) +
scale_size_area() +
labs(size= "Nitrogen",
x = "My x label",
y = "My y label",
title = "Weighted Scatterplot of Watershed Area vs. Discharge and Nitrogen Levels (PPM)")
which gives an identical figure to the one above.
Suggestions:
for example,
type
functionname( arguments )
{
if (something)
{
do stuff
}
else
{
do other stuff
}
switch (value)
{
case 'a':
astuff
break;
case 'b':
bstuff
//fallthrough //always comment fallthrough as intentional
case 'c':
break;
default: //always consider default, and handle it explicitly
break;
}
while ( the lights are on )
{
if ( something happened )
{
run around in circles
if ( you are scared ) //yeah, much more than 3-4 levels of indent are too many!
{
scream and shout
}
}
}
return typevalue; //always return something, you'll thank me later
}
@gdbj's answer is a great explanation and the most up to date answer. Here's however a simpler approach.
So if you want to redirect all traffic from nginx listening to 80
to another container exposing 8080
, minimum configuration can be as little as:
nginx.conf:
server {
listen 80;
location / {
proxy_pass http://client:8080; # this one here
proxy_redirect off;
}
}
docker-compose.yml
version: "2"
services:
entrypoint:
image: some-image-with-nginx
ports:
- "80:80"
links:
- client # will use this one here
client:
image: some-image-with-api
ports:
- "8080:8080"
Label's aren't form elements. They don't have a value
. They have innerHTML
and textContent
.
Thus,
$('#telefon').html()
// or
$('#telefon').text()
or
var telefon = document.getElementById('telefon');
telefon.innerHTML;
If you are starting with your form element, check out the labels
list of it. That is,
var el = $('#myformelement');
var label = $( el.prop('labels') );
// label.html();
// el.val();
// blah blah blah you get the idea
This error occurs when you clone a repo using a call like:
git clone git://github.com/....git
This essentially sets you up as a pull-only user, who can't push up changes.
I fixed this by opening my repo's .git/config
file and changing the line:
[remote "origin"]
url = git://github.com/myusername/myrepo.git
to:
[remote "origin"]
url = ssh+git://[email protected]/myusername/myrepo.git
This ssh+git
protocol with the git
user is the authentication mechanism preferred by Github.
The other answers mentioned here technically work, but they all seem to bypass ssh, requiring you to manually enter a password, which you probably don't want.
An alternative way is to convert the df to a matrix then applying the list apply lappy
function over it: ldf <- lapply(as.matrix(myDF), function(x)x)
var results = from p in persons
group p by p.PersonID into g
select new { PersonID = g.Key,
/**/car = g.Select(g=>g.car).FirstOrDefault()/**/}
I had a similar problem when I deployed my Flask app in the IIS. Apparently, IIS does not accept route that include an underline ("_"). When I removed the underline, problem was resolved.
Re-Ordering data Table based on some condition or check box checked. PFB :-
var tableResult= $('#exampleTable').DataTable();
var $tr = $(this).closest('tr');
if ($("#chkBoxId").prop("checked"))
{
// re-draw table shorting based on condition
tableResult.row($tr).invalidate().order([colindx, 'asc']).draw();
}
else {
tableResult.row($tr).invalidate().order([colindx, "asc"]).draw();
}
FYI it is possible to get newlines into strings without double quotes:
printf('Please%1$sgive%1$sme%1$snewlines%1$s', PHP_EOL);
Which may be useful If your irrational fear of double quotes knows no bounds. Though I fear this cure may be worse than the disease.
have a look at the below code snippet.
@RequestMapping(value = "edit.htm", method = RequestMethod.GET)
public ModelAndView edit(@RequestParam("id") String id) throws Exception {
ModelMap modelMap = new ModelMap();
modelMap.addAttribute("user", userinfoDao.findById(id));
return new ModelAndView("edit", modelMap);
}
If you want the complete project to see how it works then download it from below link:-
An iterative function to free your list:
void freeList(struct node* head)
{
struct node* tmp;
while (head != NULL)
{
tmp = head;
head = head->next;
free(tmp);
}
}
What the function is doing is the follow:
check if head
is NULL, if yes the list is empty and we just return
Save the head
in a tmp
variable, and make head
point to the next node on your list (this is done in head = head->next
free(tmp)
variable, and head
just points to the rest of the list, go back to step 1 <tr height="70" onclick="location.href='<%=site_adres2 & urun_adres%>'"
style="cursor:pointer;">
To list all unpushed commit in all branches easily you can use this command:
git log --branches @{u}..
If you are using MS Excel 2007, you could use the conditional formatting
on the Home
tab as shown in the screenshot below. You could either use the color scales
default option as I have done here or you can go ahead and create a new rule
based on your data set.
As others already replied, it's late to write unit tests, but not too late. The question is whether your code is testable or not. Indeed, it's not easy to put existing code under test, there is even a book about this: Working Effectively with Legacy Code (see key points or precursor PDF).
Now writing the unit tests or not is your call. You just need to be aware that it could be a tedious task. You might tackle this to learn unit-testing or consider writing acceptance (end-to-end) tests first, and start writing unit tests when you'll change the code or add new feature to the project.
To format an Instant
a time-zone is required. Without a time-zone, the formatter does not know how to convert the instant to human date-time fields, and therefore throws an exception.
The time-zone can be added directly to the formatter using withZone()
.
DateTimeFormatter formatter =
DateTimeFormatter.ofLocalizedDateTime( FormatStyle.SHORT )
.withLocale( Locale.UK )
.withZone( ZoneId.systemDefault() );
If you specifically want an ISO-8601 format with no explicit time-zone (as the OP asked), with the time-zone implicitly UTC, you need
DateTimeFormatter.ISO_LOCAL_DATE_TIME.withZone(ZoneId.from(ZoneOffset.UTC))
Now use that formatter to generate the String representation of your Instant.
Instant instant = Instant.now();
String output = formatter.format( instant );
Dump to console.
System.out.println("formatter: " + formatter + " with zone: " + formatter.getZone() + " and Locale: " + formatter.getLocale() );
System.out.println("instant: " + instant );
System.out.println("output: " + output );
When run.
formatter: Localized(SHORT,SHORT) with zone: US/Pacific and Locale: en_GB
instant: 2015-06-02T21:34:33.616Z
output: 02/06/15 14:34
Yes, you can do this.
The VM registration process should finish with the cloned VM usable in the new vCenter!
Good luck!
Just go with the command py
. I'm running python 3.6.2 on windows 7 and it works just fine.
I removed all the python paths from the system directory and the paths don't show up when I run the command echo %path%
in cmd. Python is still working fine.
I ran into this by accidentally pressing enter while typing python
...
EDIT: I didn't mention that I installed python to a custom folder C:\Python\
For a start the first select has 6 columns and the second has 4 columns. Perhaps make both have the same number of columns (adding nulls?).
For question #1, let's break it into two parts. First, increment any document that has "items.item_name" equal to "my_item_two". For this you'll have to use the positional "$" operator. Something like:
db.bar.update( {user_id : 123456 , "items.item_name" : "my_item_two" } ,
{$inc : {"items.$.price" : 1} } ,
false ,
true);
Note that this will only increment the first matched subdocument in any array (so if you have another document in the array with "item_name" equal to "my_item_two", it won't get incremented). But this might be what you want.
The second part is trickier. We can push a new item to an array without a "my_item_two" as follows:
db.bar.update( {user_id : 123456, "items.item_name" : {$ne : "my_item_two" }} ,
{$addToSet : {"items" : {'item_name' : "my_item_two" , 'price' : 1 }} } ,
false ,
true);
For your question #2, the answer is easier. To increment the total and the price of item_three in any document that contains "my_item_three," you can use the $inc operator on multiple fields at the same time. Something like:
db.bar.update( {"items.item_name" : {$ne : "my_item_three" }} ,
{$inc : {total : 1 , "items.$.price" : 1}} ,
false ,
true);
grep is the right tool for extracting.
using your example and your regex:
kent$ echo 'foo bar <foo> bla 1 2 3.4'|grep -o '[0-9][0-9]*[\ \t][0-9.]*[\ \t]*$'
2 3.4
Just remove the .val(). Like:
if ( $('html').attr('lang') == 'fr-FR' ) {
// do this
} else {
// do that
}
As slight improvement to @MONTYHS answer, iterating through a tup of fieldnames:
import csv
import json
csvfilename = 'filename.csv'
jsonfilename = csvfilename.split('.')[0] + '.json'
csvfile = open(csvfilename, 'r')
jsonfile = open(jsonfilename, 'w')
reader = csv.DictReader(csvfile)
fieldnames = ('FirstName', 'LastName', 'IDNumber', 'Message')
output = []
for each in reader:
row = {}
for field in fieldnames:
row[field] = each[field]
output.append(row)
json.dump(output, jsonfile, indent=2, sort_keys=True)
The way to determine the coordinates depends on what element you're working with. For circle
s for example, the cx
and cy
attributes determine the center position. In addition, you may have a translation
applied through the transform
attribute which changes the reference point of any coordinates.
Most of the ways used in general to get screen coordinates won't work for SVGs. In addition, you may not want absolute coordinates if the line you want to draw is in the same container as the elements it connects.
Edit:
In your particular code, it's quite difficult to get the position of the node because its determined by a translation of the parent element. So you need to get the transform attribute of the parent node and extract the translation from that.
d3.transform(d3.select(this.parentNode).attr("transform")).translate
Working jsfiddle here.
The following should work with the latest version of Apache common codec
byte[] decodedBytes = Base64.getDecoder().decode("YWJjZGVmZw==");
System.out.println(new String(decodedBytes));
and for encoding
byte[] encodedBytes = Base64.getEncoder().encode(decodedBytes);
System.out.println(new String(encodedBytes));
here how I use it; This button inside my CameraActionActivity Activity class where I call camera
btn_frag_camera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intenImatToSec = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
startActivityForResult(intenImatToSec, REQUEST_CODE_VIDEO);
//intenImatToSec.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
//intenImatToSec.putExtra(MediaStore.EXTRA_DURATION_LIMIT, 10);
//Toast.makeText(getActivity(), "Hello From Camera", Toast.LENGTH_SHORT).show();
}
});
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == REQUEST_CODE_IMG) {
Bundle bundle = data.getExtras();
Bitmap bitmap = (Bitmap) bundle.get("data");
Intent intentBitMap = new Intent(getActivity(), DisplayImage.class);
// aldigimiz imagi burda yonlendirdigimiz sinifa iletiyoruz
ByteArrayOutputStream _bs = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 50, _bs);
intentBitMap.putExtra("byteArray", _bs.toByteArray());
startActivity(intentBitMap);
} else if (requestCode == REQUEST_CODE_VIDEO) {
Uri videoUrl = data.getData();
Intent intenToDisplayVideo = new Intent(getActivity(), DisplayVideo.class);
intenToDisplayVideo.putExtra("videoUri", videoUrl.toString());
startActivity(intenToDisplayVideo);
}
}
}
And my other DisplayVideo Activity Class
VideoView videoView = (VideoView) findViewById(R.id.videoview_display_video_actvity);
Bundle extras = getIntent().getExtras();
Uri myUri= Uri.parse(extras.getString("videoUri"));
videoView.setVideoURI(myUri);
escapeRegExp = function(str) {
if (str == null) return '';
return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};
Solutions that use SUBSTRING
and concatenation +
are nearly independent of RDBMS. Here is a short solution that is specific to SQL Server:
declare @x int = 123456789
select stuff(stuff(@x, 4, 0, '-'), 8, 0, '-')
This is working code for your query,you can use it.
Controler
[HttpPost]
public ActionResult save(List<ListName> listObject)
{
//operation return
Json(new { istObject }, JsonRequestBehavior.AllowGet); }
}
javascript
$("#btnSubmit").click(function () {
var myColumnDefs = [];
$('input[type=checkbox]').each(function () {
if (this.checked) {
myColumnDefs.push({ 'Status': true, 'ID': $(this).data('id') })
} else {
myColumnDefs.push({ 'Status': false, 'ID': $(this).data('id') })
}
});
var data1 = { 'listObject': myColumnDefs};
var data = JSON.stringify(data1)
$.ajax({
type: 'post',
url: '/Controller/action',
data:data ,
contentType: 'application/json; charset=utf-8',
success: function (response) {
//do your actions
},
error: function (response) {
alert("error occured");
}
});
java [ options ] -jar file.jar [ argument ... ]
if you need to pass the log4j properties file use the below option
-Dlog4j.configurationFile=directory/file.xml
java -Dlog4j.configurationFile=directory/file.xml -jar <JAR FILE> [arguments ...]
I found that this answer was causing some crashes on Android versions 9 and 10. I think it's a good approach but when I was looking at some Android code I found out it was missing a constructor. The answer is quite old so at the time there probably was no need for it. When I added the missing constructor and called it from the creator the crash was fixed.
So here is the edited code:
public class CustomView extends LinearLayout {
private int stateToSave;
...
@Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
// your custom state
ss.stateToSave = this.stateToSave;
return ss;
}
@Override
protected void dispatchSaveInstanceState(SparseArray<Parcelable> container)
{
dispatchFreezeSelfOnly(container);
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
// your custom state
this.stateToSave = ss.stateToSave;
}
@Override
protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container)
{
dispatchThawSelfOnly(container);
}
static class SavedState extends BaseSavedState {
int stateToSave;
SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
this.stateToSave = in.readInt();
}
// This was the missing constructor
@RequiresApi(Build.VERSION_CODES.N)
SavedState(Parcel in, ClassLoader loader)
{
super(in, loader);
this.stateToSave = in.readInt();
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeInt(this.stateToSave);
}
public static final Creator<SavedState> CREATOR =
new ClassLoaderCreator<SavedState>() {
// This was also missing
@Override
public SavedState createFromParcel(Parcel in, ClassLoader loader)
{
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? new SavedState(in, loader) : new SavedState(in);
}
@Override
public SavedState createFromParcel(Parcel in) {
return new SavedState(in, null);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}
I had a similar issue, all my app pools were stopping whenever a web request was made to them. Although I was getting the following error in the Event Viewer:
The worker process for application pool 'appPoolName' encountered an error 'Configuration file is not well-formed XML ' trying to read configuration data from file '\?\C:\inetpub\temp\apppools\appPoolName\appPoolName.config', line number '3'. The data field contains the error code.
Which told me that there were errors in the application.config at:
C:\Windows\System32\inetsrv\config\applicationHost.config
In my scenario, I edited the web.config on deploy with an element IIS clearly dislikes, the applicationHost.config scraped the web.config and inserted this bad element and wouldn't resolve until I manually removed it