Conditional Welcome Message
echo 'Welcome '.($user['is_logged_in'] ? $user['first_name'] : 'Guest').'!';
Nested PHP Shorthand
echo 'Your score is: '.($score > 10 ? ($age > 10 ? 'Average' : 'Exceptional') : ($age > 10 ? 'Horrible' : 'Average') );
pathToShell="/home/praveen/"
chmod a+x $pathToShell"myShell.sh"
sh $pathToShell"myShell.sh"
Update: In newer Gradle versions (4+) the compile
qualifier is deprecated in favour of the new api
and implementation
configurations. If you use these, the following should work for you:
// Include dependent libraries in archive.
mainClassName = "com.company.application.Main"
jar {
manifest {
attributes "Main-Class": "$mainClassName"
}
from {
configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
}
}
For older gradle versions, or if you still use the "compile" qualifier for your dependencies, this should work:
// Include dependent libraries in archive.
mainClassName = "com.company.application.Main"
jar {
manifest {
attributes "Main-Class": "$mainClassName"
}
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
}
Note that mainClassName
must appear BEFORE jar {
.
$('#search').autocomplete( { source: items } );
$('#search:focus').autocomplete('search', $('#search').val() );
This seems to be the only one that worked for me.
If you are using SQL Server 2008 or later
select convert(date, getdate())
Otherwise
select convert(varchar(10), getdate(),120)
Aside from what's already been said, two very common uses that have not been listed are
Hashes:
Hashes are one-way functions that transform a block of bytes into another block of bytes of a fixed size such as 128bit or 256bit (SHA/MD5). Converting the resulting bytes into Base64 makes it much easier to display the hash especially when you are comparing a checksum for integrity. Hashes are so often seen in Base64 that many people mistake Base64 itself as a hash.
Cryptography:
Since an encryption key does not have to be text but raw bytes it is sometimes necessary to store it in a file or database, which Base64 comes in handy for. Same with the resulting encrypted bytes.
Note that although Base64 is often used in cryptography is not a security mechanism. Anyone can convert the Base64 string back to its original bytes, so it should not be used as a means for protecting data, only as a format to display or store raw bytes more easily.
Certificates
x509 certificates in PEM format are base 64 encoded. http://how2ssl.com/articles/working_with_pem_files/
You can just use the column name directly:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[,column])
}
fun1(df, "B")
fun1(df, c("B","A"))
There's no need to use substitute, eval, etc.
You can even pass the desired function as a parameter:
fun1 <- function(x, column, fn) {
fn(x[,column])
}
fun1(df, "B", max)
Alternatively, using [[
also works for selecting a single column at a time:
df <- data.frame(A=1:10, B=2:11, C=3:12)
fun1 <- function(x, column){
max(x[[column]])
}
fun1(df, "B")
Let's say your script is called my_script.py
and you have put it in your Downloads folder.
There are many ways of installing Python, but homebrew is the easiest.
0) Open Terminal.app
1) Install homebrew (by pasting the following text into Terminal.app and pressing the Enter key)
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2) Install Python using homebrew
brew install python
3) cd
into the directory that contains your Python script (as an example I'm using the Downloads (Downloads
) folder in your home (~
) folder):
cd ~/Downloads
4) Run the script using the python3
executable
python3 my_script.py
You can also skip step 3 and give python3
an absolute path instead
python3 ~/Downloads/my_script.py
Instead of typing out that whole thing (~/Downloads/my_script.py
), you can find the .py
file in Finder.app and just drag it into the Terminal.app window which should type out the path for you.
If you have spaces or certain other symbols somewhere in your filename you need to enclose the file name in quotes:
python3 "~/Downloads/some directory with spaces/and a filename with a | character.py"
Note that you need to install it as brew install python
but later use the command python3
(with a 3
at the end).
Thanks to David as his solution helped me come up with my solution for uploading multi-part files from my Heroku hosted site to S3 bucket. I did it using formidable to handle incoming form and fs to get the file content. Hopefully, it may help you.
api.service.ts
public upload(files): Observable<any> {
const formData: FormData = new FormData();
files.forEach(file => {
// create a new multipart-form for every file
formData.append('file', file, file.name);
});
return this.http.post(uploadUrl, formData).pipe(
map(this.extractData),
catchError(this.handleError));
}
}
server.js
app.post('/api/upload', upload);
app.use('/api/upload', router);
upload.js
const IncomingForm = require('formidable').IncomingForm;
const fs = require('fs');
const AWS = require('aws-sdk');
module.exports = function upload(req, res) {
var form = new IncomingForm();
const bucket = new AWS.S3(
{
signatureVersion: 'v4',
accessKeyId: process.env.AWS_ACCESS_KEY_ID,
secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
region: 'us-east-1'
}
);
form.on('file', (field, file) => {
const fileContent = fs.readFileSync(file.path);
const s3Params = {
Bucket: process.env.AWS_S3_BUCKET,
Key: 'folder/' + file.name,
Expires: 60,
Body: fileContent,
ACL: 'public-read'
};
bucket.upload(s3Params, function(err, data) {
if (err) {
throw err;
}
console.log('File uploaded to: ' + data.Location);
fs.unlink(file.path, function (err) {
if (err) {
console.error(err);
}
console.log('Temp File Delete');
});
});
});
// The second callback is called when the form is completely parsed.
// In this case, we want to send back a success status code.
form.on('end', () => {
res.status(200).json('upload ok');
});
form.parse(req);
}
upload-image.component.ts
import { Component, OnInit, ViewChild, Output, EventEmitter, Input } from '@angular/core';
import { ApiService } from '../api.service';
import { MatSnackBar } from '@angular/material/snack-bar';
@Component({
selector: 'app-upload-image',
templateUrl: './upload-image.component.html',
styleUrls: ['./upload-image.component.css']
})
export class UploadImageComponent implements OnInit {
public files: Set<File> = new Set();
@ViewChild('file', { static: false }) file;
public uploadedFiles: Array<string> = new Array<string>();
public uploadedFileNames: Array<string> = new Array<string>();
@Output() filesOutput = new EventEmitter<Array<string>>();
@Input() CurrentImage: string;
@Input() IsPublic: boolean;
@Output() valueUpdate = new EventEmitter();
strUploadedFiles:string = '';
filesUploaded: boolean = false;
constructor(private api: ApiService, public snackBar: MatSnackBar,) { }
ngOnInit() {
}
updateValue(val) {
this.valueUpdate.emit(val);
}
reset()
{
this.files = new Set();
this.uploadedFiles = new Array<string>();
this.uploadedFileNames = new Array<string>();
this.filesUploaded = false;
}
upload() {
this.api.upload(this.files).subscribe(res => {
this.filesOutput.emit(this.uploadedFiles);
if (res == 'upload ok')
{
this.reset();
}
}, err => {
console.log(err);
});
}
onFilesAdded() {
var txt = '';
const files: { [key: string]: File } = this.file.nativeElement.files;
for (let key in files) {
if (!isNaN(parseInt(key))) {
var currentFile = files[key];
var sFileExtension = currentFile.name.split('.')[currentFile.name.split('.').length - 1].toLowerCase();
var iFileSize = currentFile.size;
if (!(sFileExtension === "jpg"
|| sFileExtension === "png")
|| iFileSize > 671329) {
txt = "File type : " + sFileExtension + "\n\n";
txt += "Size: " + iFileSize + "\n\n";
txt += "Please make sure your file is in jpg or png format and less than 655 KB.\n\n";
alert(txt);
return false;
}
this.files.add(files[key]);
this.uploadedFiles.push('https://gourmet-philatelist-assets.s3.amazonaws.com/folder/' + files[key].name);
this.uploadedFileNames.push(files[key].name);
if (this.IsPublic && this.uploadedFileNames.length == 1)
{
this.filesUploaded = true;
this.updateValue(files[key].name);
break;
}
else if (!this.IsPublic && this.uploadedFileNames.length == 3)
{
this.strUploadedFiles += files[key].name;
this.updateValue(this.strUploadedFiles);
this.filesUploaded = true;
break;
}
else
{
this.strUploadedFiles += files[key].name + ",";
this.updateValue(this.strUploadedFiles);
}
}
}
}
addFiles() {
this.file.nativeElement.click();
}
openSnackBar(message: string, action: string) {
this.snackBar.open(message, action, {
duration: 2000,
verticalPosition: 'top'
});
}
}
upload-image.component.html
<input type="file" #file style="display: none" (change)="onFilesAdded()" multiple />
<button mat-raised-button color="primary"
[disabled]="filesUploaded" (click)="$event.preventDefault(); addFiles()">
Add Files
</button>
<button class="btn btn-success" [disabled]="uploadedFileNames.length == 0" (click)="$event.preventDefault(); upload()">
Upload
</button>
Try this:
select Cast( Cast( (ROUND( 35.457514 , 2) *100) as Int) as float ) /100
SWIFT 4:
self.view.endEditing(true)
or
Set text field's delegate to current viewcontroller and then:
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
Objective-C:
[self.view endEditing:YES];
or
Set text field's delegate to current viewcontroller and then:
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
let clickTimes = 0;
let timer = null;
roundBox.click = function (e) {
clearTimeout(timer);
timer = setTimeout(() => { // ????
console.log("single click");
}, 600);
clickTimes++;
if (clickTimes == 2) { // ??
clearTimeout(timer);
clickTimes = 0;
console.log("double click");
toggleExpanded(id);
}
}
var form = $("<form/>",
{ action:'/myaction' }
);
form.append(
$("<input>",
{ type:'text',
placeholder:'Keywords',
name:'keyword',
style:'width:65%' }
)
);
form.append(
$("<input>",
{ type:'submit',
value:'Search',
style:'width:30%' }
)
);
$("#someDivId").append(form);
UnderscoreJs has a function that does that, underscorejs.org/#once
// Returns a function that will be executed at most one time, no matter how
// often you call it. Useful for lazy initialization.
_.once = function(func) {
var ran = false, memo;
return function() {
if (ran) return memo;
ran = true;
memo = func.apply(this, arguments);
func = null;
return memo;
};
};
Linkage determines whether identifiers that have identical names refer to the same object, function, or other entity, even if those identifiers appear in different translation units. The linkage of an identifier depends on how it was declared. There are three types of linkages:
C++ only : You can also have linkage between C++ and non-C++ code fragments, which is called language linkage.
Source :IBM Program Linkage
A variant of Marks (excellent) answer
Hope this helps
[TestFixture]
public class RijndaelHelperTests
{
[Test]
public void UseCase()
{
//These two values should not be hard coded in your code.
byte[] key = {251, 9, 67, 117, 237, 158, 138, 150, 255, 97, 103, 128, 183, 65, 76, 161, 7, 79, 244, 225, 146, 180, 51, 123, 118, 167, 45, 10, 184, 181, 202, 190};
byte[] vector = {214, 11, 221, 108, 210, 71, 14, 15, 151, 57, 241, 174, 177, 142, 115, 137};
using (var rijndaelHelper = new RijndaelHelper(key, vector))
{
var encrypt = rijndaelHelper.Encrypt("StringToEncrypt");
var decrypt = rijndaelHelper.Decrypt(encrypt);
Assert.AreEqual("StringToEncrypt", decrypt);
}
}
}
public class RijndaelHelper : IDisposable
{
Rijndael rijndael;
UTF8Encoding encoding;
public RijndaelHelper(byte[] key, byte[] vector)
{
encoding = new UTF8Encoding();
rijndael = Rijndael.Create();
rijndael.Key = key;
rijndael.IV = vector;
}
public byte[] Encrypt(string valueToEncrypt)
{
var bytes = encoding.GetBytes(valueToEncrypt);
using (var encryptor = rijndael.CreateEncryptor())
using (var stream = new MemoryStream())
using (var crypto = new CryptoStream(stream, encryptor, CryptoStreamMode.Write))
{
crypto.Write(bytes, 0, bytes.Length);
crypto.FlushFinalBlock();
stream.Position = 0;
var encrypted = new byte[stream.Length];
stream.Read(encrypted, 0, encrypted.Length);
return encrypted;
}
}
public string Decrypt(byte[] encryptedValue)
{
using (var decryptor = rijndael.CreateDecryptor())
using (var stream = new MemoryStream())
using (var crypto = new CryptoStream(stream, decryptor, CryptoStreamMode.Write))
{
crypto.Write(encryptedValue, 0, encryptedValue.Length);
crypto.FlushFinalBlock();
stream.Position = 0;
var decryptedBytes = new Byte[stream.Length];
stream.Read(decryptedBytes, 0, decryptedBytes.Length);
return encoding.GetString(decryptedBytes);
}
}
public void Dispose()
{
if (rijndael != null)
{
rijndael.Dispose();
}
}
}
Use the following instead:
boost::function<void (int)> f2( boost::bind( &myclass::fun2, this, _1 ) );
This forwards the first parameter passed to the function object to the function using place-holders - you have to tell Boost.Bind how to handle the parameters. With your expression it would try to interpret it as a member function taking no arguments.
See e.g. here or here for common usage patterns.
Note that VC8s cl.exe regularly crashes on Boost.Bind misuses - if in doubt use a test-case with gcc and you will probably get good hints like the template parameters Bind-internals were instantiated with if you read through the output.
TortoiseSVN doesn't use svn.exe it has SVN library compiled in. If you need to run your own tasks you would have to install stand alone subversion client. You either from Cygwin [http://cygwin.com ] or get a native version from http://subversion.apache.org/packages.html#windows
From my Linux installation I did:
sudo ipython2 kernelspec install-self
And now my python 2 is back on the list.
Reference:
http://ipython.readthedocs.org/en/latest/install/kernel_install.html
UPDATE:
The method above is now deprecated and will be dropped in the future. The new method should be:
sudo ipython2 kernel install
Heres a truly "Reversible Dictionary", Based upon Adam Acosta's solution, but enforcing val-to-key calls to be unique and easily return key from value:
from collections import UserDict
class ReversibleDict(UserDict):
def __init__(self, enforce_unique=True, *args, **kwargs):
super().__init__(*args, **kwargs)
self.val_to_keys = {}
self.check_val = self.check_unique if enforce_unique else lambda x: x
def __setitem__(self, key, value):
self.check_val(value)
super().__setitem__(key, value)
self.val_to_keys[value] = key
def __call__(self, value):
return self.val_to_keys[value]
def check_unique(self, value):
assert value not in self.val_to_keys, f"Non unique value '{value}'"
return value
If you want to enforce uniqueness on dictionary values ensure to set enforce_unique=True. to get keys from values just do rev_dict(value), to call values from keys just do as usual dict['key'], here's an example of usage:
rev_dict = ReversibleDict(enforce_unique=True)
rev_dict["a"] = 1
rev_dict["b"] = 2
rev_dict["c"] = 3
print("full dictinoary is: ", rev_dict)
print("value for key 'b' is: ", rev_dict["b"])
print("key for value '2' is: ", rev_dict(2))
print("tring to set another key with the same value results in error: ")
rev_dict["d"] = 1
If you are inside your login page, in LoginUser_LoggedIn event for instance, Current.User.Identity.Name will return an empty value, so you have to use yourLoginControlName.UserName property.
MembershipUser u = Membership.GetUser(LoginUser.UserName);
I use this function in my code:
$.fn.extend({_x000D_
insertAtCaret: function(myValue) {_x000D_
this.each(function() {_x000D_
if (document.selection) {_x000D_
this.focus();_x000D_
var sel = document.selection.createRange();_x000D_
sel.text = myValue;_x000D_
this.focus();_x000D_
} else if (this.selectionStart || this.selectionStart == '0') {_x000D_
var startPos = this.selectionStart;_x000D_
var endPos = this.selectionEnd;_x000D_
var scrollTop = this.scrollTop;_x000D_
this.value = this.value.substring(0, startPos) +_x000D_
myValue + this.value.substring(endPos,this.value.length);_x000D_
this.focus();_x000D_
this.selectionStart = startPos + myValue.length;_x000D_
this.selectionEnd = startPos + myValue.length;_x000D_
this.scrollTop = scrollTop;_x000D_
} else {_x000D_
this.value += myValue;_x000D_
this.focus();_x000D_
}_x000D_
});_x000D_
return this;_x000D_
}_x000D_
});
_x000D_
input{width:100px}_x000D_
label{display:block;margin:10px 0}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<label>Copy text from: <input id="in2copy" type="text" value="x"></label>_x000D_
<label>Insert text in: <input id="in2ins" type="text" value="1,2,3" autofocus></label>_x000D_
<button onclick="$('#in2ins').insertAtCaret($('#in2copy').val())">Insert</button>
_x000D_
It's not 100% mine, I googled it somewhere and then tuned for mine app.
Usage: $('#element').insertAtCaret('text');
There are a few characters that are dissallowed in XML documents, even when you encapsulate data in CDATA-blocks.
If you generated the document you will need to entity encode it or strip it out. If you have an errorneous document, you should strip away these characters before trying to parse it.
See dolmens answer in this thread: Invalid Characters in XML
Where he links to this article: http://www.w3.org/TR/xml/#charsets
Basically, all characters below 0x20 is disallowed, except 0x9 (TAB), 0xA (CR?), 0xD (LF?)
Swift 5, Xcode 11.3
I found this approach simple by specifying which view controller(s) you want to remove from the navigation stack.
extension UINavigationController {
func removeViewController(_ controller: UIViewController.Type) {
if let viewController = viewControllers.first(where: { $0.isKind(of: controller.self) }) {
viewController.removeFromParent()
}
}
}
Example use:
navigationController.removeViewController(YourViewController.self)
The first dimension is an array of state sets, the second ist the state set itself. The colors array lists the colors for each matching state set, therefore the length of the colors array has to match the first dimension of the states array (or it will crash when the state is "used"). Here and example:
ColorStateList myColorStateList = new ColorStateList(
new int[][]{
new int[]{android.R.attr.state_pressed}, //1
new int[]{android.R.attr.state_focused}, //2
new int[]{android.R.attr.state_focused, android.R.attr.state_pressed} //3
},
new int[] {
Color.RED, //1
Color.GREEN, //2
Color.BLUE //3
}
);
hope this helps.
EDIT example: a xml color state list like:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:color="@color/white"/>
<item android:color="@color/black"/>
</selector>
would look like this
ColorStateList myColorStateList = new ColorStateList(
new int[][]{
new int[]{android.R.attr.state_pressed},
new int[]{}
},
new int[] {
context.getResources().getColor(R.color.white),
context.getResources().getColor(R.color.black)
}
);
You cannot set cookies for another domain. Allowing this would present an enormous security flaw.
You need to get b.com to set the cookie. If a.com redirect the user to b.com/setcookie.php?c=value
The setcookie script could contain the following to set the cookie and redirect to the correct page on b.com
<?php
setcookie('a', $_GET['c']);
header("Location: b.com/landingpage.php");
?>
Yes, gzip
will let you do this. If you simply run gzip > foo.gz
, it will compress STDIN to the file foo.gz. You can also pipe data into it, like some_command | gzip > foo.gz
.
I have an alternative solution for you. You could create a hidden worksheet to maintain the old values for your range of interest.
Private Sub Workbook_Open()
Dim hiddenSheet As Worksheet
Set hiddenSheet = Me.Worksheets.Add
hiddenSheet.Visible = xlSheetVeryHidden
hiddenSheet.Name = "HiddenSheet"
'Change Sheet1 to whatever sheet you're working with
Sheet1.UsedRange.Copy ThisWorkbook.Worksheets("HiddenSheet").Range(Sheet1.UsedRange.Address)
End Sub
Delete it when the workbook is closed...
Private Sub Workbook_BeforeClose(Cancel As Boolean)
Application.DisplayAlerts = False
Me.Worksheets("HiddenSheet").Delete
Application.DisplayAlerts = True
End Sub
And modify your Worksheet_Change event like so...
For Each cell In Target
If Not (Intersect(cell, Range("cell_of_interest")) Is Nothing) Then
new_value = cell.Value
' here's your "old" value...
old_value = ThisWorkbook.Worksheets("HiddenSheet").Range(cell.Address).Value
Call DoFoo(old_value, new_value)
End If
Next cell
' Update your "old" values...
ThisWorkbook.Worksheets("HiddenSheet").UsedRange.Clear
Me.UsedRange.Copy ThisWorkbook.Worksheets("HiddenSheet").Range(Me.UsedRange.Address)
<textarea name="hide" style="display:none;"></textarea>
This sets the css display
property to none
, which prevents the browser from rendering the textarea.
Had the same issue on my iPad running 8.1.3 Deleting the app and installing again fixed the issue. I use two different provisioning profiles on two different machines and that could have caused this issue.
here you can find an implementation :
def __uniqueid__():
"""
generate unique id with length 17 to 21.
ensure uniqueness even with daylight savings events (clocks adjusted one-hour backward).
if you generate 1 million ids per second during 100 years, you will generate
2*25 (approx sec per year) * 10**6 (1 million id per sec) * 100 (years) = 5 * 10**9 unique ids.
with 17 digits (radix 16) id, you can represent 16**17 = 295147905179352825856 ids (around 2.9 * 10**20).
In fact, as we need far less than that, we agree that the format used to represent id (seed + timestamp reversed)
do not cover all numbers that could be represented with 35 digits (radix 16).
if you generate 1 million id per second with this algorithm, it will increase the seed by less than 2**12 per hour
so if a DST occurs and backward one hour, we need to ensure to generate unique id for twice times for the same period.
the seed must be at least 1 to 2**13 range. if we want to ensure uniqueness for two hours (100% contingency), we need
a seed for 1 to 2**14 range. that's what we have with this algorithm. You have to increment seed_range_bits if you
move your machine by airplane to another time zone or if you have a glucky wallet and use a computer that can generate
more than 1 million ids per second.
one word about predictability : This algorithm is absolutely NOT designed to generate unpredictable unique id.
you can add a sha-1 or sha-256 digest step at the end of this algorithm but you will loose uniqueness and enter to collision probability world.
hash algorithms ensure that for same id generated here, you will have the same hash but for two differents id (a pair of ids), it is
possible to have the same hash with a very little probability. You would certainly take an option on a bijective function that maps
35 digits (or more) number to 35 digits (or more) number based on cipher block and secret key. read paper on breaking PRNG algorithms
in order to be convinced that problems could occur as soon as you use random library :)
1 million id per second ?... on a Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz, you get :
>>> timeit.timeit(uniqueid,number=40000)
1.0114529132843018
an average of 40000 id/second
"""
mynow=datetime.now
sft=datetime.strftime
# store old datetime each time in order to check if we generate during same microsecond (glucky wallet !)
# or if daylight savings event occurs (when clocks are adjusted backward) [rarely detected at this level]
old_time=mynow() # fake init - on very speed machine it could increase your seed to seed + 1... but we have our contingency :)
# manage seed
seed_range_bits=14 # max range for seed
seed_max_value=2**seed_range_bits - 1 # seed could not exceed 2**nbbits - 1
# get random seed
seed=random.getrandbits(seed_range_bits)
current_seed=str(seed)
# producing new ids
while True:
# get current time
current_time=mynow()
if current_time <= old_time:
# previous id generated in the same microsecond or Daylight saving time event occurs (when clocks are adjusted backward)
seed = max(1,(seed + 1) % seed_max_value)
current_seed=str(seed)
# generate new id (concatenate seed and timestamp as numbers)
#newid=hex(int(''.join([sft(current_time,'%f%S%M%H%d%m%Y'),current_seed])))[2:-1]
newid=int(''.join([sft(current_time,'%f%S%M%H%d%m%Y'),current_seed]))
# save current time
old_time=current_time
# return a new id
yield newid
""" you get a new id for each call of uniqueid() """
uniqueid=__uniqueid__().next
import unittest
class UniqueIdTest(unittest.TestCase):
def testGen(self):
for _ in range(3):
m=[uniqueid() for _ in range(10)]
self.assertEqual(len(m),len(set(m)),"duplicates found !")
hope it helps !
To remove you can use this directly:
getSupportFragmentManager().beginTransaction().remove(fragment).
commitAllowingStateLoss();
fragment
is the fragment you want to remove.
function someFunction(site) {
if (site.indexOf('/') > 0)
return site.substring(0, site.indexOf('/'));
return site;
}
A more robust way, supposing there are multiple PDF's or just one !
import os
from PyPDF2 import PdfFileWriter, PdfFileReader
from io import BytesIO
mydir = # specify path to your directory where PDF or PDF's are
for arch in os.listdir(mydir):
buffer = io.BytesIO()
archpath = os.path.join(mydir, arch)
with open(archpath) as f:
pdfFileObj = open(archpath, 'rb')
pdfReader = PyPDF2.PdfFileReader(pdfFileObj)
pdfReader.numPages
pageObj = pdfReader.getPage(0)
ley = pageObj.extractText()
file1 = open("myfile.txt","w")
file1.writelines(ley)
file1.close()
What you are looking for can be found here. It may exist a more elegant way to accomplish that, but one possible approach is
final Duration timeout = Duration.ofSeconds(30);
ExecutorService executor = Executors.newSingleThreadExecutor();
final Future<String> handler = executor.submit(new Callable() {
@Override
public String call() throws Exception {
return requestDataFromModem();
}
});
try {
handler.get(timeout.toMillis(), TimeUnit.MILLISECONDS);
} catch (TimeoutException e) {
handler.cancel(true);
}
executor.shutdownNow();
final Duration timeout = Duration.ofSeconds(30);
ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
final Future<String> handler = executor.submit(new Callable() {
@Override
public String call() throws Exception {
return requestDataFromModem();
}
});
executor.schedule(new Runnable() {
@Override
public void run(){
handler.cancel(true);
}
}, timeout.toMillis(), TimeUnit.MILLISECONDS);
executor.shutdownNow();
Those are only a draft so that you can get the main idea.
To analyze a query you already have entered into the Query editor, you need to choose "Include Actual Execution Plan" (7th toggle button to the right of the "! Execute" button). After executing the query, you need to click on the "Execution Plan" tab in the results pane at the bottom (above the results of the query).
The condition below:
//Element[@attribute1="abc" and @attribute2="xyz" and Data]
checks for the existence of the element Data within Element and not for element value Data.
Instead you can use
//Element[@attribute1="abc" and @attribute2="xyz" and text()="Data"]
Two problems- List is empty. You need to add some buttons to the list first. Second problem: You can't add buttons to "this". "This" is not referencing what you think, I think. Change this to reference a Panel for instance.
//Assume you have on your .aspx page:
<asp:Panel ID="Panel_Controls" runat="server"></asp:Panel>
private void button1_Click(object sender, EventArgs e)
{
List<Button> buttons = new List<Button>();
for (int i = 0; i < buttons.Capacity; i++)
{
Panel_Controls.Controls.Add(buttons[i]);
}
}
Since I was helped with my project by the answer above (I asked a duplicate question and was referred here), I am submitting an answer (my test code) for bracket notation when nesting within the var:
<html>_x000D_
<head>_x000D_
<script type="text/javascript">_x000D_
function displayFile(whatOption, whatColor) {_x000D_
var Test01 = {_x000D_
rectangle: {_x000D_
red: "RectangleRedFile",_x000D_
blue: "RectangleBlueFile"_x000D_
},_x000D_
square: {_x000D_
red: "SquareRedFile",_x000D_
blue: "SquareBlueFile"_x000D_
}_x000D_
};_x000D_
var filename = Test01[whatOption][whatColor];_x000D_
alert(filename);_x000D_
}_x000D_
</script>_x000D_
</head>_x000D_
<body>_x000D_
<p onclick="displayFile('rectangle', 'red')">[ Rec Red ]</p>_x000D_
<br/>_x000D_
<p onclick="displayFile('square', 'blue')">[ Sq Blue ]</p>_x000D_
<br/>_x000D_
<p onclick="displayFile('square', 'red')">[ Sq Red ]</p>_x000D_
</body>_x000D_
</html>
_x000D_
You can just use the null coalesce operator.
string result = value ?? "";
__getitem__
minimal ...
example in a custom class
When the magic syntax ...
gets passed to []
in a custom class, __getitem__()
receives a Ellipsis
class object.
The class can then do whatever it wants with this Singleton object.
Example:
class C(object):
def __getitem__(self, k):
return k
# Single argument is passed directly.
assert C()[0] == 0
# Multiple indices generate a tuple.
assert C()[0, 1] == (0, 1)
# Slice notation generates a slice object.
assert C()[1:2:3] == slice(1, 2, 3)
# Ellipsis notation generates the Ellipsis class object.
# Ellipsis is a singleton, so we can compare with `is`.
assert C()[...] is Ellipsis
# Everything mixed up.
assert C()[1, 2:3:4, ..., 6] == (1, slice(2,3,4), Ellipsis, 6)
The Python built-in list
class chooses to give it the semantic of a range, and any sane usage of it should too of course.
Personally, I'd just stay away from it in my APIs, and create a separate, more explicit method instead.
Tested in Python 3.5.2 and 2.7.12.
In PostreSQL you can use SIMILAR TO operator (more):
-- only digits
select * from books where title similar to '^[0-9]*$';
-- start with digit
select * from books where title similar to '^[0-9]%$';
Use DATE_FORMAT()
SELECT
DATE_FORMAT(NOW(), '%d %m %Y') AS your_date;
The ggeasy
package has a function called easy_center_title()
to do just that. I find it much more appealing than theme(plot.title = element_text(hjust = 0.5))
and it's so much easier to remember.
ggplot(data = dat, aes(time, total_bill, fill = time)) +
geom_bar(colour = "black", fill = "#DD8888", width = .8, stat = "identity") +
guides(fill = FALSE) +
xlab("Time of day") +
ylab("Total bill") +
ggtitle("Average bill for 2 people") +
ggeasy::easy_center_title()
Note that as of writing this answer you will need to install the development version of ggeasy
from GitHub to use easy_center_title()
. You can do so by running remotes::install_github("jonocarroll/ggeasy")
.
I had this problem when using Butterknife , I was using fragment
For Fragment, it should be ButterKnife.bind(this,view);
For Activity ButterKnife.bind(this);
You could wrap your return value in the Boolean function
Boolean([return value])
That'll ensure all falsey values are false and truthy statements are true.
All Integers are modulo of 1. So below check must give you the answer.
if(d % 1 == 0)
@noskio is correct... it just means that simplejson
isn't found on your system and you need to install it for Python older than 2.6. one way is to use the setuptools easy_install
tool. with it, you can install it as easily as: easy_install simplejson
UPDATE (Feb 2014): this is probably old news to many of you, but pip is a more modern tool that works in a similar way (i.e., pip install simplejson
), only it can also uninstall apps.
The SQL standard way to implement recursive queries, as implemented e.g. by IBM DB2 and SQL Server, is the WITH
clause. See this article for one example of translating a CONNECT BY
into a WITH
(technically a recursive CTE) -- the example is for DB2 but I believe it will work on SQL Server as well.
Edit: apparently the original querant requires a specific example, here's one from the IBM site whose URL I already gave. Given a table:
CREATE TABLE emp(empid INTEGER NOT NULL PRIMARY KEY,
name VARCHAR(10),
salary DECIMAL(9, 2),
mgrid INTEGER);
where mgrid
references an employee's manager's empid
, the task is, get the names of everybody who reports directly or indirectly to Joan
. In Oracle, that's a simple CONNECT
:
SELECT name
FROM emp
START WITH name = 'Joan'
CONNECT BY PRIOR empid = mgrid
In SQL Server, IBM DB2, or PostgreSQL 8.4 (as well as in the SQL standard, for what that's worth;-), the perfectly equivalent solution is instead a recursive query (more complex syntax, but, actually, even more power and flexibility):
WITH n(empid, name) AS
(SELECT empid, name
FROM emp
WHERE name = 'Joan'
UNION ALL
SELECT nplus1.empid, nplus1.name
FROM emp as nplus1, n
WHERE n.empid = nplus1.mgrid)
SELECT name FROM n
Oracle's START WITH
clause becomes the first nested SELECT
, the base case of the recursion, to be UNION
ed with the recursive part which is just another SELECT
.
SQL Server's specific flavor of WITH
is of course documented on MSDN, which also gives guidelines and limitations for using this keyword, as well as several examples.
No idea how you got your results, since it would not sort by string value... You should reverse a1
and a2
in your example
Best way in any case (as per Mladen) is:
metrics = {"sitea.com" => 745, "siteb.com" => 9, "sitec.com" => 10 }
metrics.sort_by {|_key, value| value}
# ==> [["siteb.com", 9], ["sitec.com", 10], ["sitea.com", 745]]
If you need a hash as a result, you can use to_h
(in Ruby 2.0+)
metrics.sort_by {|_key, value| value}.to_h
# ==> {"siteb.com" => 9, "sitec.com" => 10, "sitea.com", 745}
git checkout HEAD -- client/src/pp_web/index.cljs
You want to create an Object, not an Array.
Like so,
var Map = {};
Map['key1'] = 'value1';
Map['key2'] = 'value2';
You can check if the key exists in multiple ways:
Map.hasOwnProperty(key);
Map[key] != undefined // For illustration // Edit, remove null check
if (key in Map) ...
Try utilizing .one()
var button = $("#button"),_x000D_
result = $("#result"),_x000D_
buttonHandler = function buttonHandler(e) {_x000D_
result.html("processing...");_x000D_
$(this).fadeOut(1000, function() {_x000D_
// do stuff_x000D_
setTimeout(function() {_x000D_
// reset `click` event at `button`_x000D_
button.fadeIn({_x000D_
duration: 500,_x000D_
start: function() {_x000D_
result.html("done at " + $.now());_x000D_
}_x000D_
}).one("click", buttonHandler);_x000D_
_x000D_
}, 5000)_x000D_
})_x000D_
};_x000D_
_x000D_
button.one("click", buttonHandler);
_x000D_
#button {_x000D_
width: 50px;_x000D_
height: 50px;_x000D_
background: olive;_x000D_
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js">_x000D_
</script>_x000D_
<div id="result"></div>_x000D_
<div id="button">click</div>
_x000D_
Since you did not mention which version of Turbo C this method below will cover both v2 and v3.
Any time you get the...
"Fatal error: Call to a member function bind_param() on boolean"
...it is likely because there is an issue with your query. The prepare()
might return FALSE
(a Boolean), but this generic failure message doesn't leave you much in the way of clues. How do you find out what is wrong with your query? You ask!
First of all, make sure error reporting is turned on and visible: add these two lines to the top of your file(s) right after your opening <?php
tag:
error_reporting(E_ALL);
ini_set('display_errors', 1);
If your error reporting has been set in the php.ini you won't have to worry about this. Just make sure you handle errors gracefully and never reveal the true cause of any issues to your users. Revealing the true cause to the public can be a gold engraved invitation for those wanting to harm your sites and servers. If you do not want to send errors to the browser you can always monitor your web server error logs. Log locations will vary from server to server e.g., on Ubuntu the error log is typically located at /var/log/apache2/error.log
. If you're examining error logs in a Linux environment you can use tail -f /path/to/log
in a console window to see errors as they occur in real-time....or as you make them.
Once you're squared away on standard error reporting adding error checking on your database connection and queries will give you much more detail about the problems going on. Have a look at this example where the column name is incorrect. First, the code which returns the generic fatal error message:
$sql = "SELECT `foo` FROM `weird_words` WHERE `definition` = ?";
$query = $mysqli->prepare($sql)); // assuming $mysqli is the connection
$query->bind_param('s', $definition);
$query->execute();
The error is generic and not very helpful to you in solving what is going on.
With a couple of more lines of code you can get very detailed information which you can use to solve the issue immediately. Check the prepare()
statement for truthiness and if it is good you can proceed on to binding and executing.
$sql = "SELECT `foo` FROM `weird_words` WHERE `definition` = ?";
if($query = $mysqli->prepare($sql)) { // assuming $mysqli is the connection
$query->bind_param('s', $definition);
$query->execute();
// any additional code you need would go here.
} else {
$error = $mysqli->errno . ' ' . $mysqli->error;
echo $error; // 1054 Unknown column 'foo' in 'field list'
}
If something is wrong you can spit out an error message which takes you directly to the issue. In this case there is no foo
column in the table, solving the problem is trivial.
If you choose, you can include this checking in a function or class and extend it by handling the errors gracefully as mentioned previously.
This scrip is working for all version of android and i find it after many search
LocationManager locMan;
String[] mockProviders = {LocationManager.GPS_PROVIDER, LocationManager.NETWORK_PROVIDER};
try {
locMan = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
for (String p : mockProviders) {
if (p.contentEquals(LocationManager.GPS_PROVIDER))
locMan.addTestProvider(p, false, false, false, false, true, true, true, 1,
android.hardware.SensorManager.SENSOR_STATUS_ACCURACY_HIGH);
else
locMan.addTestProvider(p, false, false, false, false, true, true, true, 1,
android.hardware.SensorManager.SENSOR_STATUS_ACCURACY_LOW);
locMan.setTestProviderEnabled(p, true);
locMan.setTestProviderStatus(p, android.location.LocationProvider.AVAILABLE, Bundle.EMPTY,
java.lang.System.currentTimeMillis());
}
} catch (Exception ignored) {
// here you should show dialog which is mean the mock location is not enable
}
If you encounter this apparent index corruption in a running system, you can work around it by deleting all files called segments.gen. It is advisory only, and Lucene can recover correctly without it.
From ElasticSearch Blog
SQLSTATE[HY093]: Invalid parameter number: parameter was not defined
Unfortunately this error is not descriptive for a range of different problems related to the same issue - a binding error. It also does not specify where the error is, and so your problem is not necessarily in the execution, but the sql statement that was already 'prepared'.
These are the possible errors and their solutions:
There is a parameter mismatch - the number of fields does not match the parameters that have been bound. Watch out for arrays in arrays. To double check - use var_dump($var). "print_r" doesn't necessarily show you if the index in an array is another array (if the array has one value in it), whereas var_dump will.
You have tried to bind using the same binding value, for example: ":hash" and ":hash". Every index has to be unique, even if logically it makes sense to use the same for two different parts, even if it's the same value. (it's similar to a constant but more like a placeholder)
If you're binding more than one value in a statement (as is often the case with an "INSERT"), you need to bindParam and then bindValue to the parameters. The process here is to bind the parameters to the fields, and then bind the values to the parameters.
// Code snippet
$column_names = array();
$stmt->bindParam(':'.$i, $column_names[$i], $param_type);
$stmt->bindValue(':'.$i, $values[$i], $param_type);
$i++;
//.....
When binding values to column_names or table_names you can use `` but its not necessary, but make sure to be consistent.
Any value in '' single quotes is always treated as a string and will not be read as a column/table name or placeholder to bind to.
You'll probably want to use a DECIMAL
type in your database. In your migration, do something like this:
# precision is the total number of digits
# scale is the number of digits to the right of the decimal point
add_column :items, :price, :decimal, :precision => 8, :scale => 2
In Rails, the :decimal
type is returned as BigDecimal
, which is great for price calculation.
If you insist on using integers, you will have to manually convert to and from BigDecimal
s everywhere, which will probably just become a pain.
As pointed out by mcl, to print the price, use:
number_to_currency(price, :unit => "€")
#=> €1,234.01
You can do that with bool query and combination of must and must_not like this:
GET index/_search
{
"query": {
"bool": {
"must": [
{"exists": {"field": "field1"}}
],
"must_not": [
{"term": {"field1": ""}}
]
}
}
}
I tested this with Elasticsearch 5.6.5 in Kibana.
Enum is very useful, I have been using Enum
a lot to add a description for some fields in different languages, as the following example:
public enum Status {
ACT(new String[] { "Accepted", "?????" }),
REJ(new String[] { "Rejected", "?????" }),
PND(new String[] { "Pending", "?? ????????" }),
ERR(new String[] { "Error", "???" }),
SNT(new String[] { "Sent", "?????" });
private String[] status;
public String getDescription(String lang) {
return lang.equals("en") ? status[0] : status[1];
}
Status(String[] status) {
this.status = status;
}
}
And then you can retrieve the description dynamically based in the language code passed to getDescription(String lang)
method, for example:
String statusDescription = Status.valueOf("ACT").getDescription("en");
Method overloading occurs when two or more methods with same method name but different number of parameters in single class. PHP does not support method overloading. Method overriding means two methods with same method name and same number of parameters in two different classes means parent class and child class.
You can subclass the C structure that is available in the standard library. The ctypes module provides a Structure class. The example from the docs:
>>> from ctypes import *
>>> class POINT(Structure):
... _fields_ = [("x", c_int),
... ("y", c_int)]
...
>>> point = POINT(10, 20)
>>> print point.x, point.y
10 20
>>> point = POINT(y=5)
>>> print point.x, point.y
0 5
>>> POINT(1, 2, 3)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
ValueError: too many initializers
>>>
>>> class RECT(Structure):
... _fields_ = [("upperleft", POINT),
... ("lowerright", POINT)]
...
>>> rc = RECT(point)
>>> print rc.upperleft.x, rc.upperleft.y
0 5
>>> print rc.lowerright.x, rc.lowerright.y
0 0
>>>
I had this problem and it took me nearly 2 days to resolve...
I had moved my SDK location, due to the system drive being full, and it seems that someone, somewhere at Android Studio central has hard-coded the path to the HaxM driver installer. As my HamX driver was out of date, the emulator wouldn't start.
Solution: navigate to [your sdk location]\extras\intel\Hardware_Accelerated_Execution_Manager and run the intelhaxm-android.exe installer to update yourself to the latest driver.
C style, simple ring buffer for integers. First use init than use put and get. If buffer does not contain any data it returns "0" zero.
//=====================================
// ring buffer address based
//=====================================
#define cRingBufCount 512
int sRingBuf[cRingBufCount]; // Ring Buffer
int sRingBufPut; // Input index address
int sRingBufGet; // Output index address
Bool sRingOverWrite;
void GetRingBufCount(void)
{
int r;
` r= sRingBufPut - sRingBufGet;
if ( r < cRingBufCount ) r+= cRingBufCount;
return r;
}
void InitRingBuffer(void)
{
sRingBufPut= 0;
sRingBufGet= 0;
}
void PutRingBuffer(int d)
{
sRingBuffer[sRingBufPut]= d;
if (sRingBufPut==sRingBufGet)// both address are like ziro
{
sRingBufPut= IncRingBufferPointer(sRingBufPut);
sRingBufGet= IncRingBufferPointer(sRingBufGet);
}
else //Put over write a data
{
sRingBufPut= IncRingBufferPointer(sRingBufPut);
if (sRingBufPut==sRingBufGet)
{
sRingOverWrite= Ture;
sRingBufGet= IncRingBufferPointer(sRingBufGet);
}
}
}
int GetRingBuffer(void)
{
int r;
if (sRingBufGet==sRingBufPut) return 0;
r= sRingBuf[sRingBufGet];
sRingBufGet= IncRingBufferPointer(sRingBufGet);
sRingOverWrite=False;
return r;
}
int IncRingBufferPointer(int a)
{
a+= 1;
if (a>= cRingBufCount) a= 0;
return a;
}
This hasn't solved my problem too, so I changed the parameters slightly.
This code worked for me:
var dataValue = "{ name: 'person', isGoing: 'true', returnAddress: 'returnEmail' }";
$.ajax({
type: "POST",
url: "Default.aspx/OnSubmit",
data: dataValue,
contentType: 'application/json; charset=utf-8',
dataType: 'json',
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert("Request: " + XMLHttpRequest.toString() + "\n\nStatus: " + textStatus + "\n\nError: " + errorThrown);
},
success: function (result) {
alert("We returned: " + result.d);
}
});
According to The W3C:
This attribute sets the size of the font. Possible values:
- An integer between 1 and 7. This sets the font to some fixed size, whose rendering depends on the user agent. Not all user agents may render all seven sizes.
- A relative increase in font size. The value "+1" means one size larger. The value "-3" means three sizes smaller. All sizes belong to the scale of 1 to 7.
Hence, the conversion you're asking for is not possible. The browser is not required to use specific sizes with specific size
attributes.
Also note that use of the font
element is discouraged by W3 in favor of style sheets.
Another way to get access to array.index(of: Any) is by declaring your object
import Foundation
class Model: NSObject { }
The pre increment is before increment value ++
e.g.:
(++v) or 1 + v
The post increment is after increment the value ++
e.g.:
(rmv++) or rmv + 1
Program:
int rmv = 10, vivek = 10;
cout << "rmv++ = " << rmv++ << endl; // the value is 10
cout << "++vivek = " << ++vivek; // the value is 11
If it is the most recent commit, you can simply do this:
git commit --amend
This brings up the editor with the last commit message and lets you edit the message. (You can use -m
if you want to wipe out the old message and use a new one.)
And then when you push, do this:
git push --force-with-lease <repository> <branch>
Or you can use "+":
git push <repository> +<branch>
Or you can use --force
:
git push --force <repository> <branch>
Be careful when using these commands.
If someone else pushed changes to the same branch, you probably want to avoid destroying those changes. The --force-with-lease
option is the safest, because it will abort if there are any upstream changes (
If you don't specify the branch explicitly, Git will use the default push settings. If your default push setting is "matching", then you may destroy changes on several branches at the same time.
Anyone who already pulled will now get an error message, and they will need to update (assuming they aren't making any changes themselves) by doing something like this:
git fetch origin
git reset --hard origin/master # Loses local commits
Be careful when using reset --hard
. If you have changes to the branch, those changes will be destroyed.
The destroyed data is really just the old commit message, but --force
doesn't know that, and will happily delete other data too. So think of --force
as "I want to destroy data, and I know for sure what data is being destroyed." But when the destroyed data is committed, you can often recover old commits from the reflog—the data is actually orphaned instead of destroyed (although orphaned commits are periodically deleted).
If you don't think you're destroying data, then stay away from --force
... bad things might happen.
This is why --force-with-lease
is somewhat safer.
Warning! There's a numbers of errors on the Sun JPA 2 example and the resulting pasted content in Pascal's answer. Please consult this post.
This post and the Sun Java EE 6 JPA 2 example really held back my comprehension of JPA 2. After plowing through the Hibernate and OpenJPA manuals and thinking that I had a good understanding of JPA 2, I still got confused afterwards when returning to this post.
You can do it with the options
echo $form->field($model, 'hidden1',
['options' => ['value'=> 'your value'] ])->hiddenInput()->label(false);
This happens every time you insert/ update and you don't use single quotes. When the variable is empty it will result in that error. Fix it by using ''
Assuming the first parameter is an empty variable here is a simple example:
Wrong
nvl( ,0)
Fix
nvl('' ,0)
Put your query into your database software and check it for that error. Generally this is an easy fix
A standard way to achieve this would be to use the pkg_resources
module which is part of the setuptools
package. setuptools
is used to create an install-able python package.
You can use pkg_resources
to return the contents of your desired file as a string and you can use pkg_resources
to get the actual path of the desired file on your system.
Let's say that you have a package called stackoverflow
.
stackoverflow/
|-- app
| `-- __init__.py
`-- resources
|-- bands
| |-- Dream\ Theater
| |-- __init__.py
| |-- King's\ X
| |-- Megadeth
| `-- Rush
`-- __init__.py
3 directories, 7 files
Now let's say that you want to access the file Rush from a module app.run
. Use pkg_resources.resouces_filename
to get the path to Rush and pkg_resources.resource_string
to get the contents of Rush; thusly:
import pkg_resources
if __name__ == "__main__":
print pkg_resources.resource_filename('resources.bands', 'Rush')
print pkg_resources.resource_string('resources.bands', 'Rush')
The output:
/home/sri/workspace/stackoverflow/resources/bands/Rush
Base: Geddy Lee
Vocals: Geddy Lee
Guitar: Alex Lifeson
Drums: Neil Peart
This works for all packages in your python path. So if you want to know where lxml.etree
exists on your system:
import pkg_resources
if __name__ == "__main__":
print pkg_resources.resource_filename('lxml', 'etree')
output:
/usr/lib64/python2.7/site-packages/lxml/etree
The point is that you can use this standard method to access files that are installed on your system (e.g pip install xxx or yum -y install python-xxx) and files that are within the module that you're currently working on.
I had a similar problem which I fixed by moving some fragment transaction code from onResume()
into onStart()
.
To be more precise: My app is a launcher. After pressing the Android Home button, the user can choose a launcher until his/her decision is remembered. When going "back" at this point (e. g. by tapping in the greyish area) the app crashed.
Maybe this helps somebody.
It turns out, I was using the fetch
method incorrectly.
fetch
expects two parameters: an endpoint to the API, and an optional object which can contain body and headers.
I was wrapping the intended object within a second object, which did not get me any desired result.
Here's how it looks on a high level:
fetch('API_ENDPOINT', OBJECT)
.then(function(res) {
return res.json();
})
.then(function(resJson) {
return resJson;
})
I structured my object as such:
var obj = {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json',
'Origin': '',
'Host': 'api.producthunt.com'
},
body: JSON.stringify({
'client_id': '(API KEY)',
'client_secret': '(API SECRET)',
'grant_type': 'client_credentials'
})
Are you committing the cell before pressing the button (pressing Enter)? The contents of the cell must be stored before it can be used to name a sheet.
A better way to do this is to pop up a dialog box and get the name you wish to use.
None of the solutions above worked for me straight away. So I followed these steps:
pom.xml:
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
</properties>
Go to Project Properties
> Java Build Path
, then remove the JRE
System Library pointing to JRE1.5
.
Force updated the project.
Kiran's answer is definetely the answer for my case.
In code part I split string to 4000 char strings and try to put them in to db.
Explodes with this error.
The cause of the error is using utf chars, those counts 2 bytes each. Even I truncate to 4000 chars in code(sth. like String.Take(4000)), oracle considers 4001 when string contains 'ö' or any other non-eng(non ascii to be precise, which are represented with two or bytes in utf8) characters.
If you need to transform keys or values before creating a dictionary then a generator expression could be used. Example:
>>> adict = dict((str(k), v) for k, v in zip(['a', 1, 'b'], [2, 'c', 3]))
Take a look Code Like a Pythonista: Idiomatic Python.
Since R is already installed, you should be able to upgrade it with this method. First of all, you may want to have the packages you installed in the previous version in the new one,so it is convenient to check this post. Then, follow the instructions from here
Open the sources.list
file:
sudo nano /etc/apt/sources.list
Add a line with the source from where the packages will be retrieved. For example:
deb https://cloud.r-project.org/bin/linux/ubuntu/ version/
Replace https://cloud.r-project.org
with whatever mirror you would like to use, and replace
version/
with whatever version of Ubuntu you are using (eg, trusty/
, xenial/
, and so on). If you're getting a "Malformed line error", check to see if you have a space between /ubuntu/
and version/
.
Fetch the secure APT key:
gpg --keyserver keyserver.ubuntu.com --recv-key E298A3A825C0D65DFD57CBB651716619E084DAB9
or
gpg --hkp://keyserver keyserver.ubuntu.com:80 --recv-key E298A3A825C0D65DFD57CBB651716619E084DAB9
Add it to keyring:
gpg -a --export E084DAB9 | sudo apt-key add -
Update your sources and upgrade your installation:
sudo apt-get update && sudo apt-get upgrade
Install the new version
sudo apt-get install r-base-dev
Recover your old packages following the solution that best suits to you (see this). For instance, to recover all the packages (not only those from CRAN) the idea is:
-- copy the packages from R-oldversion/library
to R-newversion/library
, (do not overwrite a package if it already exists in the new version!).
-- Run the R command update.packages(checkBuilt=TRUE, ask=FALSE)
.
Print a Timestamp in java, using the java.sql.Timestamp.
import java.sql.Timestamp;
import java.util.Date;
public class GetCurrentTimeStamp {
public static void main( String[] args ){
java.util.Date date= new java.util.Date();
System.out.println(new Timestamp(date.getTime()));
}
}
This prints:
2014-08-07 17:34:16.664
Print a Timestamp in Java using SimpleDateFormat on a one-liner.
import java.util.Date;
import java.text.SimpleDateFormat;
class Runner{
public static void main(String[] args){
System.out.println(
new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new Date()));
}
}
Prints:
08/14/2014 14:10:38
Java date format legend:
G Era designation Text AD
y Year Year 1996; 96
M Month in year Month July; Jul; 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day in week Text Tuesday; Tue
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time; PST; GMT-08:00
Z Time zone RFC 822 time zone -0800
Server.UrlEncode() is there to provide backward compatibility with Classic ASP,
Server.UrlEncode(str);
Is equivalent to:
HttpUtility.UrlEncode(str, Response.ContentEncoding);
It only comes when your list or dictionary not available in the local function.
I can't comment on Esben Skov Pedersen's answer directly, but using the following notation for links:
<a href="javascript:window.open('http://www.websiteofyourchoice.com');">Click here</a>
In Internet Explorer, the new browser window appears, but the current window navigates to a page which says "[Object]". To avoid this, simple put a "void(0)" behind the JavaScript function.
If you want to control the formatting of the unique identifier you can create your own <FieldType>
in SharePoint. MSDN also has a visual How-To. This basically means that you're creating a custom column.
WSS defines the Counter field type (which is what the ID column above is using). I've never had the need to re-use this or extend it, but it should be possible.
A solution might exist without creating a custom <FieldType>
. For example: if you wanted unique IDs like CUST1, CUST2, ... it might be possible to create a Calculated column and use the value of the ID column in you formula (="CUST" & [ID]
). I haven't tried this, but this should work :)
As a really simple example,
SYNCHRONOUS
Imagine 3 school students instructed to run a relay race on a road.
1st student runs her given distance, stops and passes the baton to the 2nd. No one else has started to run.
1------>
2.
3.
When the 2nd student retrieves the baton, she starts to run her given distance.
1.
2------>
3.
The 2nd student got her shoelace untied. Now she has stopped and tying up again. Because of this, 2nd's end time has got extended and the 3rd's starting time has got delayed.
1.
--2.--->
3.
This pattern continues on till the 3rd retrieves the baton from 2nd and finishes the race.
ASYNCHRONOUS
Just Imagine 10 random people walking on the same road. They're not on a queue of course, just randomly walking on different places on the road in different paces.
2nd person's shoelace got untied. She stopped to get it tied up again.
But nobody is waiting for her to get it tied up. Everyone else is still walking the same way they did before, in that same pace of theirs.
10--> 9-->
8--> 7--> 6-->
5--> 4-->
1--> 2. 3-->
As of JodaTime 2.3, the toDateMidnight()
is deprecated.
Deprecations since 2.2 ---------------------- - DateMidnight [#41] This class is flawed in concept The time of midnight occasionally does not occur in some time-zones This is a result of a daylight savings time from 00:00 to 01:00 DateMidnight is essentially a DateTime with a time locked to midnight Such a concept is more generally a poor one to use, given LocalDate Replace DateMidnight with LocalDate Or replace it with DateTime, perhaps using the withTimeAtStartOfDay() method
Here is a sample code without toDateMidnight()
method.
Code
DateTime todayAtMidnight = new DateTime().withTimeAtStartOfDay();
System.out.println(todayAtMidnight.toString("yyyy-MM-dd HH:mm:ss"));
Output (may be different depending on your local time zone)
2013-09-28 00:00:00
Make sure that you also include smtp class which comes with phpmailer:
// for mailing
require("phpmailer/class.phpmailer.php");
require("phpmailer/class.smtp.php");
Here you go: ES5
var test = 'Hello World';
if( test.indexOf('World') >= 0){
// Found world
}
With ES6 best way would be to use includes
function to test if the string contains the looking work.
const test = 'Hello World';
if (test.includes('World')) {
// Found world
}
Detecting and embedding Flash within a web document is a surprisingly difficult task.
I was very disappointed with the quality and non-standards compliant markup generated from both SWFObject and Adobe's solutions. Additionally, my testing found Adobe's auto updater to be inconsistent and unreliable.
The JavaScript Flash Detection Library (Flash Detect) and JavaScript Flash HTML Generator Library (Flash TML) are a legible, maintainable and standards compliant markup solution.
-"Luke read the source!"
It is possible if you can change the collection code that implements IEnumerable or IEnumerable (e.g. your own implementation of IList).
Create an Iterator doing this job for you, for example like the following implementation through the IEnumerable interface (assuming 'items' is a List field in this sample):
public IEnumerator<TObject> GetEnumerator()
{
for (var i = items.Count - 1; i >= 0; i--)
{
yield return items[i];
}
}
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
Because of this your List will iterate in reverse order through your list.
Just a hint: You should clearly state this special behaviour of your list within the documentation (even better by choosing a self-explaining class name like Stack or Queue, too).
We'll check a Collection object is empty, null or not. these all methods which are given below, are present in org.apache.commons.collections4.CollectionUtils package.
Check on List or set type of collection Objects.
CollectionUtils.isEmpty(listObject);
CollectionUtils.isNotEmpty(listObject);
Check on Map type of Objects.
MapUtils.isEmpty(mapObject);
MapUtils.isNotEmpty(mapObject);
The return type of all methods is boolean.
Pull from the repository to a new directory, then rename the old one to old_crufty
, and the new one to my_real_webserver_directory
, and you're good to go.
If your intention is that every single file is in SVN, then this is a good way to test your theory. If your intention is that some files are not in SVN, then use Brian's copy/paste technique.
Margin = new Thickness(0, 0, 0, 0);
The following code detects if the provided number is presented in scientific notation. If so it is represented in normal presentation with a maximum of '25' digits.
static String convertFromScientificNotation(double number) {
// Check if in scientific notation
if (String.valueOf(number).toLowerCase().contains("e")) {
System.out.println("The scientific notation number'"
+ number
+ "' detected, it will be converted to normal representation with 25 maximum fraction digits.");
NumberFormat formatter = new DecimalFormat();
formatter.setMaximumFractionDigits(25);
return formatter.format(number);
} else
return String.valueOf(number);
}
In case that you are interested in writing a test, then github.com/stretchr/testify/assert
is your friend.
Import the library at the very beginning of the file:
import (
"github.com/stretchr/testify/assert"
)
Then inside the test you do:
func TestEquality_SomeSlice (t * testing.T) {
a := []int{1, 2}
b := []int{2, 1}
assert.Equal(t, a, b)
}
The error prompted will be:
Diff:
--- Expected
+++ Actual
@@ -1,4 +1,4 @@
([]int) (len=2) {
+ (int) 1,
(int) 2,
- (int) 2,
(int) 1,
Test: TestEquality_SomeSlice
Please note there are two very nice color schemes by default in IDEA 10.
The one that is included is named Railcasts. It is included with the Ruby plugin (free official plugin, install via plugin manager).
The normal name resolution in Python works fine. Why do you need DNSpython for that. Just use socket's getaddrinfo
which follows the rules configured for your operating system (on Debian, it follows /etc/nsswitch.conf
:
>>> print socket.getaddrinfo('google.com', 80)
[(10, 1, 6, '', ('2a00:1450:8006::63', 80, 0, 0)), (10, 2, 17, '', ('2a00:1450:8006::63', 80, 0, 0)), (10, 3, 0, '', ('2a00:1450:8006::63', 80, 0, 0)), (10, 1, 6, '', ('2a00:1450:8006::68', 80, 0, 0)), (10, 2, 17, '', ('2a00:1450:8006::68', 80, 0, 0)), (10, 3, 0, '', ('2a00:1450:8006::68', 80, 0, 0)), (10, 1, 6, '', ('2a00:1450:8006::93', 80, 0, 0)), (10, 2, 17, '', ('2a00:1450:8006::93', 80, 0, 0)), (10, 3, 0, '', ('2a00:1450:8006::93', 80, 0, 0)), (2, 1, 6, '', ('209.85.229.104', 80)), (2, 2, 17, '', ('209.85.229.104', 80)), (2, 3, 0, '', ('209.85.229.104', 80)), (2, 1, 6, '', ('209.85.229.99', 80)), (2, 2, 17, '', ('209.85.229.99', 80)), (2, 3, 0, '', ('209.85.229.99', 80)), (2, 1, 6, '', ('209.85.229.147', 80)), (2, 2, 17, '', ('209.85.229.147', 80)), (2, 3, 0, '', ('209.85.229.147', 80))]
Simple and Easy. Remove all columns after the 22th.
df.drop(columns=df.columns[22:]) # love it
Have a look here, this has a proof-of-concept page and demo you can use to get anything from the drop-down: asp:DropDownList Control Tutorial Page
Wanted to add that my problem was in an activity where I tried to make a FragmentTransaction
in onCreate BEFORE I called super.onCreate()
. I just moved super.onCreate()
to top of function and was worked fine.
It is worth mentioning that 2>&1 means that standard error will be redirected too, together with standard output. So
someCommand | tee someFile
gives you just the standard output in the file, but not the standard error: standard error will appear in console only. To get standard error in the file too, you can use
someCommand 2>&1 | tee someFile
(source: In the shell, what is " 2>&1 "? ). Finally, both the above commands will truncate the file and start clear. If you use a sequence of commands, you may want to get output&error of all of them, one after another. In this case you can use -a flag to "tee" command:
someCommand 2>&1 | tee -a someFile
You can use twiny to create 2 x-axis scales. For Example:
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax1 = fig.add_subplot(111)
ax2 = ax1.twiny()
a = np.cos(2*np.pi*np.linspace(0, 1, 60.))
ax1.plot(range(60), a)
ax2.plot(range(100), np.ones(100)) # Create a dummy plot
ax2.cla()
plt.show()
Ref: http://matplotlib.sourceforge.net/faq/howto_faq.html#multiple-y-axis-scales
Output:
Please follow below steps it work's for me:
local.properties
For windows users:
sdk.dir=C:\\Users\\UserName\\AppData\\Local\\Android\\sdk
Replace UserName with your pc user name . Also make sure the folder is sdk or Sdk. In my case my computer user name is Zahid so the path look like:
sdk.dir=C:\\Users\\Zahid\\AppData\\Local\\Android\\sdk
For Mac users:
sdk.dir = /Users/USERNAME/Library/Android/sdk
Where USERNAME is your OSX username.
For Linux (Ubuntu) users:
sdk.dir = /home/USERNAME/Android/Sdk
Where USERNAME is your linux username(Linux paths are case-sensitive: make sure the case of S
in Sdk
matches)
In case if this doesn't work, add ANDROID_HOME variable in "Environment Variables" as C:\Users\USER\AppData\Local\Android\Sdk
You're trying to create a tuple, but you're just parenthesizing a string :)
Add an extra ',':
dRecieved = connFile.readline()
processThread = threading.Thread(target=processLine, args=(dRecieved,)) # <- note extra ','
processThread.start()
Or use brackets to make a list:
dRecieved = connFile.readline()
processThread = threading.Thread(target=processLine, args=[dRecieved]) # <- 1 element list
processThread.start()
If you notice, from the stack trace: self.__target(*self.__args, **self.__kwargs)
The *self.__args
turns your string into a list of characters, passing them to the processLine
function. If you pass it a one element list, it will pass that element as the first argument - in your case, the string.
For simplicity and well structured sake, use SpringMVC. It's just so simple.
@RequestMapping("/carlist.json")
public @ResponseBody List<String> getCarList() {
return carService.getAllCars();
}
Reference and credit: https://github.com/xvitcoder/spring-mvc-angularjs
This is doable, at least in theory, if you know the index:
System.out.println(team1.keySet().toArray()[0]);
keySet()
returns a set, so you convert the set to an array.
The problem, of course, is that a set doesn't promise to keep your order. If you only have one item in your HashMap, you're good, but if you have more than that, it's best to loop over the map, as other answers have done.
You could use a labeled BREAK statement:
search:
for (i = 0; i < arrayOfInts.length; i++) {
for (j = 0; j < arrayOfInts[i].length; j++) {
if (arrayOfInts[i][j] == searchfor) {
foundIt = true;
break search;
}
}
}
However, in properly designed code, you shouldn't need GOTO functionality.
If you want to inspect html, css or maybe you need js console in your mobile browser . You can use excelent tool eruda Using it you have the same Developer Tools on your mobile browser like in your desctop device. Dont forget to upvote :) Here is a link https://github.com/liriliri/eruda
You can create a sub-interface for that special case:
interface Command extends Action<Void, Void> {
default Void execute(Void v) {
execute();
return null;
}
void execute();
}
It uses a default method to override the inherited parameterized method Void execute(Void)
, delegating the call to the simpler method void execute()
.
The result is that it's much simpler to use:
Command c = () -> System.out.println("Do nothing!");
Wrap the Parallel.Foreach
into a Task.Run()
and instead of the await
keyword use [yourasyncmethod].Result
(you need to do the Task.Run thing to not block the UI thread)
Something like this:
var yourForeachTask = Task.Run(() =>
{
Parallel.ForEach(ids, i =>
{
ICustomerRepo repo = new CustomerRepo();
var cust = repo.GetCustomer(i).Result;
customers.Add(cust);
});
});
await yourForeachTask;
In my case, I did this to make the TextBlock
display nicer.
<Border BorderThickness="3" BorderBrush="Yellow" CornerRadius="10" Padding="2"
HorizontalAlignment="Center" VerticalAlignment="Center" Height="30" Width="150">
<TextBlock FontSize="20" Height="23" HorizontalAlignment="Left" Margin="0,0,0,-5" Text="" VerticalAlignment="Top" Width="141" Background="White" />
</Border>
The trick to make the text further from the bottom is to set
Margin="0,0,0,-5"
Your fundamental problem is that grep
works one line at a time - so it cannot find a SELECT statement spread across lines.
Your second problem is that the regex you are using doesn't deal with the complexity of what can appear between SELECT and FROM - in particular, it omits commas, full stops (periods) and blanks, but also quotes and anything that can be inside a quoted string.
I would likely go with a Perl-based solution, having Perl read 'paragraphs' at a time and applying a regex to that. The downside is having to deal with the recursive search - there are modules to do that, of course, including the core module File::Find.
In outline, for a single file:
$/ = "\n\n"; # Paragraphs
while (<>)
{
if ($_ =~ m/SELECT.*customerName.*FROM/mi)
{
printf file name
go to next file
}
}
That needs to be wrapped into a sub that is then invoked by the methods of File::Find.
In the service project do the following:
Now you need to make a setup project. The best thing to do is use the setup wizard.
Right click on your solution and add a new project: Add > New Project > Setup and Deployment Projects > Setup Wizard
a. This could vary slightly for different versions of Visual Studio. b. Visual Studio 2010 it is located in: Install Templates > Other Project Types > Setup and Deployment > Visual Studio Installer
On the second step select "Create a Setup for a Windows Application."
On the 3rd step, select "Primary output from..."
Click through to Finish.
Next edit your installer to make sure the correct output is included.
You can edit the installer output name by right clicking the Installer project in your solution and select Properties. Change the 'Output file name:' to whatever you want. By selecting the installer project as well and looking at the properties windows, you can edit the Product Name
, Title
, Manufacturer
, etc...
Next build your installer and it will produce an MSI and a setup.exe. Choose whichever you want to use to deploy your service.
set /a number=%random% %% [maximum]-[minimum]
example "
set /a number=%random% %% 100-50
will give a random number between 100 and 50. Be sure to only use one percentage sign as the operand if you are not using the line in a batch script!
Considering the following data frame:
>>> df = pd.DataFrame(10*np.random.rand(3, 4), columns=list("ABCD"))
>>> print(df)
... A B C D
... 0 8.362940 0.354027 1.916283 6.226750
... 1 1.988232 9.003545 9.277504 8.522808
... 2 1.141432 4.935593 2.700118 7.739108
Using a list of column names, change the type for multiple columns with applymap()
:
>>> cols = ['A', 'B']
>>> df[cols] = df[cols].applymap(np.int64)
>>> print(df)
... A B C D
... 0 8 0 1.916283 6.226750
... 1 1 9 9.277504 8.522808
... 2 1 4 2.700118 7.739108
Or for a single column with apply()
:
>>> df['C'] = df['C'].apply(np.int64)
>>> print(df)
... A B C D
... 0 8 0 1 6.226750
... 1 1 9 9 8.522808
... 2 1 4 2 7.739108
SimpleDateFormat
stores intermediate results in instance fields. So if one instance is used by two threads they can mess each other's results.
Looking at the source code reveals that there is a Calendar
instance field, which is used by operations on DateFormat
/ SimpleDateFormat
.
For example parse(..)
calls calendar.clear()
initially and then calendar.add(..)
. If another thread invokes parse(..)
before the completion of the first invocation, it will clear the calendar, but the other invocation will expect it to be populated with intermediate results of the calculation.
One way to reuse date formats without trading thread-safety is to put them in a ThreadLocal
- some libraries do that. That's if you need to use the same format multiple times within one thread. But in case you are using a servlet container (that has a thread pool), remember to clean the thread-local after you finish.
To be honest, I don't understand why they need the instance field, but that's the way it is. You can also use joda-time DateTimeFormat
which is threadsafe.
It may need a backslash on the end of the line for continuation (although perhaps that depends on the version of make):
if [ -a myApp ] ; \
then \
rm myApp ; \
fi;
If you're using Matplotlib interactively, for example in a web application, (e.g. ipython) you maybe looking for
plt.show()
instead of plt.close()
or plt.clf()
.
Update: The python34 bug mentioned below has finally been fixed. It is a perfectly fine choice now.
Rather than using broken EPEL python34 packages, you can enable the IUS repo and have it work properly.
The main python34u
and python35u
IUS packages include the pyvenv tool (/usr/bin/pyvenv-3.4
or /usr/bin/pyvenv-3.5
) that includes bundled wheels of pip and setuptools for bootstrapping virtual environments.
The python34u-pip
and python35u-pip
IUS packages include /usr/bin/pip3.4
and /usr/bin/pip3.5
respectively. These work just fine to install packages to the system site-packages directory.
I was facing same error. I have configured slf4j-api, slf4j-log4j12 and log4j, in my local development. All configuration was fine, but slf4j-log4j12 dependency which I copied from mvnrepository had test scope <scope>test</scope>
. When I removed this every thing is fine.
Some times silly mistakes breaks our head ;)
document.querySelectorAll(".your_class_name_here");
That will work in "modern" browsers that implement that method (IE8+).
function ReplaceContentInContainer(selector, content) {
var nodeList = document.querySelectorAll(selector);
for (var i = 0, length = nodeList.length; i < length; i++) {
nodeList[i].innerHTML = content;
}
}
ReplaceContentInContainer(".theclass", "HELLO WORLD");
If you want to provide support for older browsers, you could load a stand-alone selector engine like Sizzle (4KB mini+gzip) or Peppy (10K mini) and fall back to it if the native querySelector method is not found.
Is it overkill to load a selector engine just so you can get elements with a certain class? Probably. However, the scripts aren't all that big and you will may find the selector engine useful in many other places in your script.
Using the visibility
property only affects the visibility of the elements on the page; they will still be there in the page layout. To completely remove the elements from the page, use the display
property.
display:none // for hiding
display:block // for showing
Make sure to change your css file to use display instead of visibility too.
As for the javascript (this is not jQuery), make sure you hide the options by default when the page loads:
<script type="text/javascript">
window.onload = function() {
document.getElementById('ifYes').style.display = 'none';
}
function yesnoCheck() {
if (document.getElementById('yesCheck').checked) {
document.getElementById('ifYes').style.display = 'block';
}
else {
document.getElementById('ifYes').style.display = 'none';
}
}
</script>
If you haven't done so already, I would recommend taking a look at jQuery. jQuery code is much clearer and easier to write and understand.
Try this, you can create an extension method like this:
public static string ContentToString(this HttpContent httpContent)
{
var readAsStringAsync = httpContent.ReadAsStringAsync();
return readAsStringAsync.Result;
}
and then, simple call the extension method:
txtBlock.Text = response.Content.ContentToString();
I hope this help you ;-)
I used this site to help me understand the basics about WiX Upgrade:
http://wix.tramontana.co.hu/tutorial/upgrades-and-modularization
Afterwards I created a sample Installer, (installed a test file), then created the Upgrade installer (installed 2 sample test files). This will give you a basic understanding of how the mechanism works.
And as Mike said in the book from Apress, "The Definitive Guide to Windows Installer", it will help you out to understand, but it is not written using WiX.
Another site that was pretty helpful was this one:
In the web development world, the term "redirect" is the act of sending the client an empty HTTP response with just a Location
header containing the new URL to which the client has to send a brand new GET request. So basically:
some.jsp
.Location: other.jsp
headerother.jsp
(this get reflected in browser address bar!)other.jsp
.You can track it with the web browser's builtin/addon developer toolset. Press F12 in Chrome/IE9/Firebug and check the "Network" section to see it.
Exactly the above is achieved by sendRedirect("other.jsp")
. The RequestDispatcher#forward()
doesn't send a redirect. Instead, it uses the content of the target page as HTTP response.
some.jsp
.other.jsp
.However, as the original HTTP request was to some.jsp
, the URL in browser address bar remains unchanged. Also, any request attributes set in the controller behind some.jsp
will be available in other.jsp
. This does not happen during a redirect because you're basically forcing the client to create a new HTTP request on other.jsp
, hereby throwing away the original request on some.jsp
including all of its attribtues.
The RequestDispatcher
is extremely useful in the MVC paradigm and/or when you want to hide JSP's from direct access. You can put JSP's in the /WEB-INF
folder and use a Servlet
which controls, preprocesses and postprocesses the requests. The JSPs in the /WEB-INF
folder are not directly accessible by URL, but the Servlet
can access them using RequestDispatcher#forward()
.
You can for example have a JSP file in /WEB-INF/login.jsp
and a LoginServlet
which is mapped on an url-pattern
of /login
. When you invoke http://example.com/context/login
, then the servlet's doGet()
will be invoked. You can do any preprocessing stuff in there and finally forward the request like:
request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response);
When you submit a form, you normally want to use POST
:
<form action="login" method="post">
This way the servlet's doPost()
will be invoked and you can do any postprocessing stuff in there (e.g. validation, business logic, login the user, etc).
If there are any errors, then you normally want to forward the request back to the same page and display the errors there next to the input fields and so on. You can use the RequestDispatcher
for this.
If a POST
is successful, you normally want to redirect the request, so that the request won't be resubmitted when the user refreshes the request (e.g. pressing F5 or navigating back in history).
User user = userDAO.find(username, password);
if (user != null) {
request.getSession().setAttribute("user", user); // Login user.
response.sendRedirect("home"); // Redirects to http://example.com/context/home after succesful login.
} else {
request.setAttribute("error", "Unknown login, please try again."); // Set error.
request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response); // Forward to same page so that you can display error.
}
A redirect thus instructs the client to fire a new GET
request on the given URL. Refreshing the request would then only refresh the redirected request and not the initial request. This will avoid "double submits" and confusion and bad user experiences. This is also called the POST-Redirect-GET
pattern.
From the Git Manual:
Using git-checkout-index to "export an entire tree"
The prefix ability basically makes it trivial to use git-checkout-index as an "export as tree" function. Just read the desired tree into the index, and do:
$ git checkout-index --prefix=git-export-dir/ -a
Array.prototype.union = function (other_array) {
/* you can include a test to check whether other_array really is an array */
other_array.forEach(function(v) { if(this.indexOf(v) === -1) {this.push(v);}}, this);
}
This will execute a command and disconnect from the running process. Of course, it can be any command you want. But for a test, you can create a php file with a sleep(20) command it.
exec("nohup /usr/bin/php -f sleep.php > /dev/null 2>&1 &");
keytool is located in JDK bin directory ($JAVA_HOME/bin). JAVA_HOME is your JDK installation directory. To use that command line you should also include $JAVA_HOME/bin to your PATH environment variable.
You can use CSS3 transition
Some good links:
http://css-tricks.com/different-transitions-for-hover-on-hover-off/
http://www.alistapart.com/articles/understanding-css3-transitions/
pyplot
is a sub-module of matplotlib
which doesn't get imported with a simple import matplotlib
.
>>> import matplotlib
>>> print matplotlib.pyplot
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'pyplot'
>>> import matplotlib.pyplot
>>>
It seems customary to do: import matplotlib.pyplot as plt
at which time you can use the various functions and classes it contains:
p = plt.plot(...)
Create keystore file from command line :
Open Command line:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved
// (if you want to store keystore file at C:/ open command line with RUN AS ADMINISTRATOR)
C:\Windows\system32> keytool -genkey -v -keystore [your keystore file path]{C:/index.keystore} -alias [your_alias_name]{index} -keyalg RSA -keysize 2048 -validity 10000[in days]
Enter > It will prompt you for password > enter password (it will be invisible)
Enter keystore password:
Re-enter new password:
Enter > It will ask your detail.
What is your first and last name?
[Unknown]: {AB} // [Your Name / Name of Signer]
What is the name of your organizational unit?
[Unknown]: {Self} // [Your Unit Name]
What is the name of your organization?
[Unknown]: {Self} // [Your Organization Name]
What is the name of your City or Locality?
[Unknown]: {INDORE} // [Your City Name]
What is the name of your State or Province?
[Unknown]: {MP} //[Your State]
What is the two-letter country code for this unit?
[Unknown]: 91
Enter > Enter Y
Is CN=AB, OU=Self, O=Self, L=INDORE, ST=MP, C=91 correct?
[no]: Y
Enter > Enter password again.
Generating 2,048 bit RSA key pair and self-signed certificate (SHA256withRSA) with a validity of 10,000 days
for: CN=AB, OU=Self, O=Self, L=INDORE, ST=MP, C=91
Enter key password for <index> (RETURN if same as keystore password):
Re-enter new password:
[ Storing C:/index.keystore ]
Export your android package to .apk with your created keystore file
Right click on Package you want to export and select export
Select Export Android Application > Next
Next
Select Use Existing Keystore > Browse .keystore file > enter password > Next
Create keystore [.keystore/.jks]
in studio...
Click Build (ALT+B) > Generate Signed APK...
Click Create new..(ALT+C)
Browse Key store path (SHIFT+ENTER) > Select Path > Enter name > OK
Fill the detail about your .jks/keystore
file
Next
Your file
Enter Studio Master Password (You can RESET if you don't know) > OK
Select *Destination Folder * > Build Type
release : for publish on app store
debug : for debugging your application
Click Finish
Done !!!
You can use the following script:
var findclasses = _doc.DocumentNode.Descendants("div").Where(d =>
d.Attributes.Contains("class") && d.Attributes["class"].Value.Contains("float")
);
you can always do this:
jQuery.fn.animateAuto = function(prop, speed, callback){
var elem, height, width;
return this.each(function(i, el){
el = jQuery(el), elem = el.clone().css({"height":"auto","width":"auto"}).appendTo("body");
height = elem.css("height"),
width = elem.css("width"),
elem.remove();
if(prop === "height")
el.animate({"height":height}, speed, callback);
else if(prop === "width")
el.animate({"width":width}, speed, callback);
else if(prop === "both")
el.animate({"width":width,"height":height}, speed, callback);
});
}
here is a fiddle: http://jsfiddle.net/Zuriel/faE9w/2/
see android.os.FileUtils, it's hide on API 21
public static boolean deleteContents(File dir) {
File[] files = dir.listFiles();
boolean success = true;
if (files != null) {
for (File file : files) {
if (file.isDirectory()) {
success &= deleteContents(file);
}
if (!file.delete()) {
Log.w("Failed to delete " + file);
success = false;
}
}
}
return success;
}
in c# this is working :D
protect void button1_Click(object sender, EventArgs e){
button2_Click(button2, null);
}
protect void button2_Click(object sender, EventeArgs e){
//some codes here
}
for vb.net
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Button2_Click(Sender, e)
End Sub
Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
//some codes here
End Sub
The following steps are performed in the Git browser powered by Atlassian (Bitbucket server)
Making {current-branch} as master
master
and name it “master-duplicate”.The Solution i found is not for ASPX but for Razor, but quite comperable issue.
I resolved it by adding the AntiForgery to the request. The HTML Helper does not create a HTML id with the call
@Html.AntiForgeryToken()
In order to add the token to the postrequest i just added the AntiForgery id to the hidden field with jquery:
$("input[name*='__RequestVerificationToken']").attr('id', '__AjaxAntiForgeryForm');
This caused the controller to accept the request with the [ValidateAntiForgeryToken] attribute
Keep in mind that SQL strings can not be larger than 4000 bytes, while Pl/SQL can have strings as large as 32767 bytes. see below for an example of inserting a large string via an anonymous block which I believe will do everything you need it to do.
note I changed the varchar2(32000) to CLOB
set serveroutput ON
CREATE TABLE testclob
(
id NUMBER,
c CLOB,
d VARCHAR2(4000)
);
DECLARE
reallybigtextstring CLOB := '123';
i INT;
BEGIN
WHILE Length(reallybigtextstring) <= 60000 LOOP
reallybigtextstring := reallybigtextstring
|| '000000000000000000000000000000000';
END LOOP;
INSERT INTO testclob
(id,
c,
d)
VALUES (0,
reallybigtextstring,
'done');
dbms_output.Put_line('I have finished inputting your clob: '
|| Length(reallybigtextstring));
END;
/
SELECT *
FROM testclob;
"I have finished inputting your clob: 60030"
You can also get this error if your SQL Server has not been configured to use Mixed mode authentication - it doesn't actually tell you that this is not enabled!
DECLARE
@InputString NVARCHAR(MAX) = 'token1,token2,token3,token4,token5'
, @delimiter varchar(10) = ','
DECLARE @xml AS XML = CAST(('<X>'+REPLACE(@InputString,@delimiter ,'</X><X>')+'</X>') AS XML)
SELECT C.value('.', 'varchar(10)') AS value
FROM @xml.nodes('X') as X(C)
Source of this response: http://sqlhint.com/sqlserver/how-to/best-split-function-tsql-delimited
HTML4 specification states that:
Inline elements may contain only data and other inline elements
Span is an inline element, therefore having span inside span is valid. There's a related question: Can <span> tags have any type of tags inside them? which makes it completely clear.
HTML5 specification (including the most current draft of HTML 5.3 dated November 16, 2017) changes terminology, but it's still perfectly valid to place span inside another span.
This is like passing a pointer to a pointer in C. In .NET this will allow you to change what the original T refers to, personally though I think if you are doing that in .NET you have probably got a design issue!
First Of All Firebase.ServerValue.TIMESTAMP
is not working anymore for me.
So for adding timestamp you have to use Firebase.database.ServerValue.TIMESTAMP
And the timestamp is in long millisecond format.To convert millisecond to simple dateformat .
Ex- dd/MM/yy HH:mm:ss
You can use the following code in java:
To get the timestamp value in string from the firebase database
String x = dataSnapshot.getValue (String.class);
The data is in string now. You can convert the string
to long
long milliSeconds= Long.parseLong(x);
Then create SimpleDateFormat
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yy HH:mm:ss");
Now convert your millisecond timestamp to ur sdf format
String dateAsString = sdf.format (milliSeconds);
After that you can parse it to ur Date
variable
date = sdf.parse (dateAsString);
Windows Presentation Foundation (WPF)
Next-Generation User Experiences. The Windows Presentation Foundation, WPF, provides a unified framework for building applications and high-fidelity experiences in Windows Vista that blend application UI, documents, and media content. WPF offers developers 2D and 3D graphics support, hardware-accelerated effects, scalability to different form factors, interactive data visualization, and superior content readability.
Windows Communication Foundation (WCF)
Windows Communication Foundation (WCF) is Microsoft’s unified programming model for building service-oriented applications. It enables developers to build secure, reliable, transacted solutions that integrate across platforms and interoperate with existing investments.
you can include @ in a 'scriptBlock' like this:
@(
echo don't echoed
hostname
)
echo echoed
and especially do not do that :)
for %%a in ("@") do %%~aecho %%~a
The correct statement should be :
SELECT
student.firstname,
student.lastname,
exam.name,
exam.date,
grade.grade
FROM grade
INNER JOIN student
ON student.studentId = grade.fk_studentId
INNER JOIN exam
ON exam.examId = grade.fk_examId
ORDER BY exam.date
A table is refered to other on the basis of the foreign key relationship defined. You should refer the ids properly if you wish the data to show as queried. So you should refer the id's to the proper foreign keys in the table rather than just on the id which doesn't define a proper relation
ok just so you know there is a program out there that's called DroidDraw. It can help you draw objects and try them one on top of the other. I tried your solution but I had animation under the smaller image so that didn't work. But then I tried to place one image in a relative layout that's suppose to be under first and then on top of that I drew the other image that is suppose to overlay and everything worked great. So RelativeLayout, DroidDraw and you are good to go :) Simple, no any kind of jiggery pockery :) and here is a bit of code for ya:
The logo is going to be on top of shazam background image.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/widget30"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
>
<ImageView
android:id="@+id/widget39"
android:layout_width="219px"
android:layout_height="225px"
android:src="@drawable/shazam_bkgd"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
>
</ImageView>
<ImageView
android:id="@+id/widget37"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/shazam_logo"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
>
</ImageView>
</RelativeLayout>
The same problem happened to me when I use distcc
to make my c++ project;
Finally I solved it with export CXX="distcc g++"
.
Many of you must be landing here to find a solution for opaque border instead of a transparent one. In that case you can use rgba
, where a
stands for alpha
.
.your_class {
height: 100px;
width: 100px;
margin: 100px;
border: 10px solid rgba(255,255,255,.5);
}
Here, you can change the opacity
of the border
from 0-1
If you simply want a complete transparent border, the best thing to use is transparent
, like border: 1px solid transparent;
Go to properties of your project ( with Alt+Enter or righ-click )
check on Apache Tomcat v7.0 under Targeted Runtime and it works.
Why try to reinvent the wheel? There are more lightweight jQuery slideshow solutions out there then you could poke a stick at, and someone has already done the hard work for you and thought about issues that you might run into (cross-browser compatability etc).
jQuery Cycle is one of my favourite light weight libraries.
What you want to achieve could be done in just
jQuery("#slideshow").cycle({
timeout:0, // no autoplay
fx: 'fade', //fade effect, although there are heaps
next: '#next',
prev: '#prev'
});
I wrote an updated version of Kees C. Bakker's answer:
const hasVerticalScroll = (node) => {
if (!node) {
if (window.innerHeight) {
return document.body.offsetHeight > window.innerHeight
}
return (document.documentElement.scrollHeight > document.documentElement.offsetHeight)
|| (document.body.scrollHeight > document.body.offsetHeight)
}
return node.scrollHeight > node.offsetHeight
}
if (hasVerticalScroll(document.querySelector('body'))) {
this.props.handleDisableDownScrollerButton()
}
The function returns true or false depending whether the page has a vertical scrollbar or not.
For example:
const hasVScroll = hasVerticalScroll(document.querySelector('body'))
if (hasVScroll) {
console.log('HAS SCROLL', hasVScroll)
}
You can break a long string constant into logical chunks and assign them into an array. Then do a join
with an empty string as a delimiter.
var stringArray = [
'1. This is first part....',
'2. This is second part.....',
'3. Finishing here.'
];
var bigLongString = stringArray.join('');
console.log(bigLongString);
Output will be:
- This is first part....2. This is second part.....3. Finishing here.
There's a slight performance hit this way but you gain in code readability and maintainability.
Main Class:
public class AndroidLocationActivity extends Activity {
Button btnGPSShowLocation;
Button btnNWShowLocation;
AppLocationService appLocationService;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
appLocationService = new AppLocationService(
AndroidLocationActivity.this);
btnGPSShowLocation = (Button) findViewById(R.id.btnGPSShowLocation);
btnGPSShowLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Location gpsLocation = appLocationService
.getLocation(LocationManager.GPS_PROVIDER);
if (gpsLocation != null) {
double latitude = gpsLocation.getLatitude();
double longitude = gpsLocation.getLongitude();
Toast.makeText(
getApplicationContext(),
"Mobile Location (GPS): \nLatitude: " + latitude
+ "\nLongitude: " + longitude,
Toast.LENGTH_LONG).show();
} else {
showSettingsAlert("GPS");
}
}
});
btnNWShowLocation = (Button) findViewById(R.id.btnNWShowLocation);
btnNWShowLocation.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Location nwLocation = appLocationService
.getLocation(LocationManager.NETWORK_PROVIDER);
if (nwLocation != null) {
double latitude = nwLocation.getLatitude();
double longitude = nwLocation.getLongitude();
Toast.makeText(
getApplicationContext(),
"Mobile Location (NW): \nLatitude: " + latitude
+ "\nLongitude: " + longitude,
Toast.LENGTH_LONG).show();
} else {
showSettingsAlert("NETWORK");
}
}
});
}
public void showSettingsAlert(String provider) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(
AndroidLocationActivity.this);
alertDialog.setTitle(provider + " SETTINGS");
alertDialog.setMessage(provider
+ " is not enabled! Want to go to settings menu?");
alertDialog.setPositiveButton("Settings",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS);
AndroidLocationActivity.this.startActivity(intent);
}
});
alertDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Next Class:
public class AppLocationService extends Service implements LocationListener {
protected LocationManager locationManager;
Location location;
private static final long MIN_DISTANCE_FOR_UPDATE = 10;
private static final long MIN_TIME_FOR_UPDATE = 1000 * 60 * 2;
public AppLocationService(Context context) {
locationManager = (LocationManager) context
.getSystemService(LOCATION_SERVICE);
}
public Location getLocation(String provider) {
if (locationManager.isProviderEnabled(provider)) {
locationManager.requestLocationUpdates(provider,
MIN_TIME_FOR_UPDATE, MIN_DISTANCE_FOR_UPDATE, this);
if (locationManager != null) {
location = locationManager.getLastKnownLocation(provider);
return location;
}
}
return null;
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
Don't forget to add in your manifest.
<!-- to get location using GPS -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- to get location using NetworkProvider -->
<uses-permission android:name="android.permission.INTERNET" />
move c:\sourcefolder c:\targetfolder
will work, but you will end up with a structure like this:
c:\targetfolder\sourcefolder\[all the subfolders & files]
If you want to move just the contents of one folder to another, then this should do it:
SET src_folder=c:\srcfold
SET tar_folder=c:\tarfold
for /f %%a IN ('dir "%src_folder%" /b') do move "%src_folder%\%%a" "%tar_folder%\"
pause
You can use ->child
to get a child element named child.
This element will contain the text of the child element.
But if you try var_dump()
on that variable, you will see it is not actually a PHP string.
The easiest way around this is to perform a strval(xml->child);
That will convert it to an actual PHP string.
This is useful when debugging when looping your XML and using var_dump()
to check the result.
So $s = strval($xml->child);
.
Another option would be to use a keyed data.table
:
library(data.table)
setDT(dt, key = 'fct')[J(vc)] # or: setDT(dt, key = 'fct')[.(vc)]
which results in:
fct X
1: a 2
2: a 7
3: a 1
4: c 3
5: c 5
6: c 9
7: c 2
8: c 4
What this does:
setDT(dt, key = 'fct')
transforms the data.frame
to a data.table
(which is an enhanced form of a data.frame
) with the fct
column set as key.vc
vector with [J(vc)]
.NOTE: when the key is a factor/character variable, you can also use setDT(dt, key = 'fct')[vc]
but that won't work when vc
is a numeric vector. When vc
is a numeric vector and is not wrapped in J()
or .()
, vc
will work as a rowindex.
A more detailed explanation of the concept of keys and subsetting can be found in the vignette Keys and fast binary search based subset.
An alternative as suggested by @Frank in the comments:
setDT(dt)[J(vc), on=.(fct)]
When vc
contains values that are not present in dt
, you'll need to add nomatch = 0
:
setDT(dt, key = 'fct')[J(vc), nomatch = 0]
or:
setDT(dt)[J(vc), on=.(fct), nomatch = 0]
well, according to http://docs.python.org/tutorial/controlflow.html
It is not safe to modify the sequence being iterated over in the loop (this can only happen for mutable sequence types, such as lists). If you need to modify the list you are iterating over (for example, to duplicate selected items) you must iterate over a copy.
The replace method in Javascript returns a value, and does not act upon the existing string object. See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace
In your example, you will have to do
$(this).attr("src", $(this).attr("src").replace(...))
Just delete the old build from the device and reinstall the same. Because device.keystore is already exist in the device so just uninstall the build and reinstall the APK thats all..
Thanks
Subscribing to the IUS Community Project Repository
cd ~
curl 'https://setup.ius.io/' -o setup-ius.sh
Run the script:
sudo bash setup-ius.sh
Upgrading mod_php with Apache
This section describes the upgrade process for a system using Apache as the web server and mod_php to execute PHP code. If, instead, you are running Nginx and PHP-FPM, skip ahead to the next section.
Begin by removing existing PHP packages. Press y and hit Enter to continue when prompted.
sudo yum remove php-cli mod_php php-common
Install the new PHP 7 packages from IUS. Again, press y and Enter when prompted.
sudo yum install mod_php70u php70u-cli php70u-mysqlnd
Finally, restart Apache to load the new version of mod_php:
sudo apachectl restart
You can check on the status of Apache, which is managed by the httpd systemd unit, using systemctl:
systemctl status httpd
If you are just trying to see if a string is empty or not (checking for length of 0), Swift offers a simple boolean test method on String
myString.isEmpty
The other side of this coin was people asking in ObjectiveC how to ask if a string was empty where the answer was to check for a length of 0:
The problem is that your PATH does not include the location of the node executable.
You can likely run node as "/usr/local/bin/node
".
You can add that location to your path by running the following command to add a single line to your bashrc file:
echo 'export PATH=$PATH:/usr/local/bin' >> $HOME/.bashrc
For Python 3, this is a much safer and Pythonic approach to convert from byte
to string
:
def byte_to_str(bytes_or_str):
if isinstance(bytes_or_str, bytes): # Check if it's in bytes
print(bytes_or_str.decode('utf-8'))
else:
print("Object not of byte type")
byte_to_str(b'total 0\n-rw-rw-r-- 1 thomas thomas 0 Mar 3 07:03 file1\n-rw-rw-r-- 1 thomas thomas 0 Mar 3 07:03 file2\n')
Output:
total 0
-rw-rw-r-- 1 thomas thomas 0 Mar 3 07:03 file1
-rw-rw-r-- 1 thomas thomas 0 Mar 3 07:03 file2
It's an attribute wildcard selector. In the sample you've given, it looks for any child element under .show-grid
that has a class that CONTAINS span
.
So would select the <strong>
element in this example:
<div class="show-grid">
<strong class="span6">Blah blah</strong>
</div>
You can also do searches for 'begins with...'
div[class^="something"] { }
which would work on something like this:-
<div class="something-else-class"></div>
and 'ends with...'
div[class$="something"] { }
which would work on
<div class="you-are-something"></div>
Good references
You have not one, but many mistakes. It should be:
int[] tall = new int[28123];
for (int j=0;j<28123;j++){
tall[j] = j+1;
}
Your code is putting a 0 in all the positions of the array.
Morover, it'll throw an exception, because the last index of the array is 28123-1 (arrays in Java start in 0!).
You can use regular expression like this:
import re
print re.search('[a-zA-Z]+',string)
document.cookie="MYBIGCOOKIE=1";
Your cookies would look like:
"MYBIGCOOKIE=1; PHPSESSID=d76f00dvgrtea8f917f50db8c31cce9"
first of all read all cookies:
var read_cookies = document.cookie;
then split all cookies with ";":
var split_read_cookie = read_cookies.split(";");
then use for loop to read each value. Into loop each value split again with "=":
for (i=0;i<split_read_cookie.length;i++){
var value=split_read_cookie[i];
value=value.split("=");
if(value[0]=="MYBIGCOOKIE" && value[1]=="1"){
alert('it is 1');
}
}
If the "many" model does not justify the creation of a model per-se (not the case here, but it might benefits other people), another alternative would be to rely on specific PostgreSQL data types, via the Django Contrib package
Postgres can deal with Array or JSON data types, and this may be a nice workaround to handle One-To-Many when the many-ies can only be tied to a single entity of the one.
Postgres allows you to access single elements of the array, which means that queries can be really fast, and avoid application-level overheads. And of course, Django implements a cool API to leverage this feature.
It obviously has the disadvantage of not being portable to others database backend, but I thougt it still worth mentionning.
Hope it may help some people looking for ideas.
When I started learning Spring Security, then I overrided the method userDetailsService() as in below code snippet:
@Configuration
@EnableWebSecurity
public class ApplicationSecurityConfiguration extends WebSecurityConfigurerAdapter{
@Override
protected void configure(HttpSecurity http) throws Exception {
http
.csrf().disable()
.authorizeRequests()
.antMatchers("/", "/index").permitAll()
.anyRequest().authenticated()
.and()
.httpBasic();
}
@Override
@Bean
public UserDetailsService userDetailsService() {
List<UserDetails> users= new ArrayList<UserDetails>();
users.add(User.withDefaultPasswordEncoder().username("admin").password("nimda").roles("USER","ADMIN").build());
users.add(User.withDefaultPasswordEncoder().username("Spring").password("Security").roles("USER").build());
return new InMemoryUserDetailsManager(users);
}
}
So we can log in to the application using the above-mentioned creds. (e.g. admin/nimda)
Note: This we should not use in production.
There are two main ways you can draw a line, by using a Canvas
or by using a View
.
From the documentation we see that we need to use the following method:
drawLine (float startX, float startY, float stopX, float stopY, Paint paint)
Here is a picture:
The Paint
object just tells Canvas
what color to paint the line, how wide it should be, and so on.
Here is some sample code:
private Paint paint = new Paint();
....
private void init() {
paint.setColor(Color.BLACK);
paint.setStrokeWidth(1f);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
startX = 20;
startY = 100;
stopX = 140;
stopY = 30;
canvas.drawLine(startX, startY, stopX, stopY, paint);
}
If you only need a straight horizontal or vertical line, then the easiest way may be to just use a View
in your xml layout file. You would do something like this:
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@android:color/black" />
Here is a picture with two lines (one horizontal and one vertical) to show what it would look like:
And here is the complete xml layout for that:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="TextView1 in vertical linear layout" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@android:color/black" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="TextView2 in vertical linear layout" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:layout_width="100dp"
android:layout_height="100dp"
android:padding="10dp"
android:text="TextView3 in horizontal linear layout" />
<View
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="@android:color/black" />
<TextView
android:layout_width="100dp"
android:layout_height="100dp"
android:padding="10dp"
android:text="TextView4 in horizontal linear layout" />
</LinearLayout>
</LinearLayout>
Shorter version of previous using map()
function (works for python 2.7):
"".join(map(chr, myList))
It’s because you tried to update a table without a WHERE that uses a KEY column.
The quick fix is to add SET SQL_SAFE_UPDATES=0; before your query :
SET SQL_SAFE_UPDATES=0;
Or
close the safe update mode. Edit -> Preferences -> SQL Editor -> SQL Editor remove Forbid UPDATE and DELETE statements without a WHERE clause (safe updates) .
BTW you can use TRUNCATE TABLE tablename;
to delete all the records .
http://www.w3schools.com/cssref/pr_list-style-type.asp
You need to use list-style-type:
to change bullet type/style and the above link has all of the options listed. As others have stated the color is changed using the color
property on the ul
itself
To create 'black filled' bullets, use 'disc' instead of 'circle',i.e.:
list-style-type:disc
I think this what you need, I mean when we want to show this toast, when there is only one activity in the stack and user pressing back from this last activity of the stack.
var exitOpened=false // Declare it globaly
and in onBackPressed
method change it like:
override fun onBackPressed() {
if (isTaskRoot && !exitOpened)
{
exitOpened=true
toast("Please press back again to exit")
return
}
super.onBackPressed()
}
Here, isTaskRoot
will return true if the current activity is the root activity(first activity) of the stack and false if it is not.
You can check the official documentation here
Here is a copy of an answer I made of some duplicate question since then deleted about Git vs. SVN (September 2009).
Better? Aside from the usual link WhyGitIsBetterThanX, they are different:
one is a Central VCS based on cheap copy for branches and tags the other (Git) is a distributed VCS based on a graph of revisions. See also Core concepts of VCS.
That first part generated some mis-informed comments pretending that the fundamental purpose of the two programs (SVN and Git) is the same, but that they have been implemented quite differently.
To clarify the fundamental difference between SVN and Git, let me rephrase:
SVN is the third implementation of a revision control: RCS, then CVS and finally SVN manage directories of versioned data. SVN offers VCS features (labeling and merging), but its tag is just a directory copy (like a branch, except you are not "supposed" to touch anything in a tag directory), and its merge is still complicated, currently based on meta-data added to remember what has already been merged.
Git is a file content management (a tool made to merge files), evolved into a true Version Control System, based on a DAG (Directed Acyclic Graph) of commits, where branches are part of the history of datas (and not a data itself), and where tags are a true meta-data.
To say they are not "fundamentally" different because you can achieve the same thing, resolve the same problem, is... plain false on so many levels.
Still the comments on that old (deleted) answer insisted:
VonC: You are confusing fundamental difference in implementation (the differences are very fundamental, we both clearly agree on this) with difference in purpose.
They are both tools used for the same purpose: this is why many teams who've formerly used SVN have quite successfully been able to dump it in favor of Git.
If they didn't solve the same problem, this substitutability wouldn't exist.
, to which I replied:
"substitutability"... interesting term (used in computer programming).
Off course, Git is hardly a subtype of SVN.
You may achieve the same technical features (tag, branch, merge) with both, but Git does not get in your way and allow you to focus on the content of the files, without thinking about the tool itself.
You certainly cannot (always) just replace SVN by Git "without altering any of the desirable properties of that program (correctness, task performed, ...)" (which is a reference to the aforementioned substitutability definition):
Again, their nature is fundamentally different (which then leads to different implementation but that is not the point).
One see revision control as directories and files, the other only see the content of the file (so much so that empty directories won't even register in Git!).
The general end-goal might be the same, but you cannot use them in the same way, nor can you solve the same class of problem (in scope or complexity).
Need to follow 3 steps.
(1) Need to go to the logs and check the most recent log (In hadoop- 2.6.0/logs/hadoop-user-datanode-ubuntu.log)
If the error is as
java.io.IOException: Incompatible clusterIDs in /home/kutty/work/hadoop2data/dfs/data: namenode clusterID = CID-c41df580-e197-4db6-a02a-a62b71463089; datanode clusterID = CID-a5f4ba24-3a56-4125-9137-fa77c5bb07b1
i.e. namenode cluster id and datanode cluster id's are not identical.
(2) Now copy the namenode clusterID which is CID-c41df580-e197-4db6-a02a-a62b71463089 in above error
(3) Replace the Datanode cluster ID with Namenode cluster ID in hadoopdata/dfs/data/current/version
clusterID=CID-c41df580-e197-4db6-a02a-a62b71463089
Restart Hadoop. Will run DataNode
An alternative way to accomplish what you are asking, without having problems on the mobile version of your website, (Remember that the margin attribute will brake your responsive layout on mobile version thus you have to add on your element a supplementary attribute like @media (min-width:768px){ 'your-class'{margin:0}}
to override the previous margin)
is to nest your class in your preferred div and then add on your class the margin option you want
like the following example: HTML
<div class="container">
<div class="col-md-3 col-xs-12">
<div class="events">
<img src="..." class="img-responsive" alt="...."/>
<div class="figcaption">
<h2>Event Title</h2>
<p>Event Description.</p>
</div>
</div>
</div>
<div class="col-md-3 col-xs-12">
<div class="events">
<img src="..." class="img-responsive" alt="...."/>
<div class="figcaption">
<h2>Event Title</h2>
<p>Event Description. </p>
</div>
</div>
</div>
<div class="col-md-3 col-xs-12">
<div class="events">
<img src="..." class="img-responsive" alt="...."/>
<div class="figcaption">
<h2>Event Title</h2>
<p>Event Description. </p>
</div>
</div>
</div>
</div>
And on your CSS you just add the margin option on your class which in this example is "events" like:
.events{
margin: 20px 10px;
}
By this method you will have all the wanted space between your divs making sure you do not brake anything on your website's mobile and tablet versions.
You can disable the caching by doing the following:
NSURLCache *sharedCache = [[NSURLCache alloc] initWithMemoryCapacity:0 diskCapacity:0 diskPath:nil];
[NSURLCache setSharedURLCache:sharedCache];
[sharedCache release];
ARC:
NSURLCache *sharedCache = [[NSURLCache alloc] initWithMemoryCapacity:0 diskCapacity:0 diskPath:nil];
[NSURLCache setSharedURLCache:sharedCache];
I think that ignoring the warning might be legitimate if you want to give the child class the ability to set or override a property that the parent constructor will use right away:
internal class Parent
{
public Parent()
{
Console.WriteLine("Parent ctor");
Console.WriteLine(Something);
}
protected virtual string Something { get; } = "Parent";
}
internal class Child : Parent
{
public Child()
{
Console.WriteLine("Child ctor");
Console.WriteLine(Something);
}
protected override string Something { get; } = "Child";
}
The risk here would be for the child class to set the property from its constructor in which case the change in the value would occur after the base class constructor has been called.
My use case is that I want the child class to provide a specific value or a utility class such as a converter and I don't want to have to call an initialization method on the base.
The output of the above when instantiating the child class is:
Parent ctor
Child
Child ctor
Child
Unfortunately I do not believe it's possible in fully-conforming HTML5 with just HTML and CSS properties. Fortunately however, most browsers do still support the scrolling
property (which was removed from the HTML5 specification).
overflow
isn't a solution for HTML5 as the only modern browser which wrongly supports this is Firefox.
A current solution would be to combine the two:
<iframe src="" scrolling="no"></iframe>
iframe {
overflow: hidden;
}
But this could be rendered obsolete as browsers update. You may want to check this for a JavaScript solution: http://www.christersvensson.com/html-tool/iframe.htm
Edit: I've checked and scrolling="no"
will work in IE10, Chrome 25 and Opera 12.12.
Use -
(Negative sign) along with position of element, example if 3rd element is to be removed use it as your_list[-3]
Input
my_list <- list(a = 3, b = 3, c = 4, d = "Hello", e = NA)
my_list
# $`a`
# [1] 3
# $b
# [1] 3
# $c
# [1] 4
# $d
# [1] "Hello"
# $e
# [1] NA
Remove single element from list
my_list[-3]
# $`a`
# [1] 3
# $b
# [1] 3
# $d
# [1] "Hello"
# $e
[1] NA
Remove multiple elements from list
my_list[c(-1,-3,-2)]
# $`d`
# [1] "Hello"
# $e
# [1] NA
my_list[c(-3:-5)]
# $`a`
# [1] 3
# $b
# [1] 3
my_list[-seq(1:2)]
# $`c`
# [1] 4
# $d
# [1] "Hello"
# $e
# [1] NA
You can also use something like
<c:if test="${ testObject.testPropert == "testValue" }">...</c:if>
.fadeOut('slow', this.remove);
In general, you use the #
syntax:
{{#a_boolean}}
I only show up if the boolean was true.
{{/a_boolean}}
The goal is to move as much logic as possible out of the template (which makes sense).
The main difference between a "factory method" and an "abstract factory" is that the factory method is a method, and an abstract factory is an object. I think a lot of people get these two terms confused, and start using them interchangeably. I remember that I had a hard time finding exactly what the difference was when I learnt them.
Because the factory method is just a method, it can be overridden in a subclass, hence the second half of your quote:
... the Factory Method pattern uses inheritance and relies on a subclass to handle the desired object instantiation.
The quote assumes that an object is calling its own factory method here. Therefore the only thing that could change the return value would be a subclass.
The abstract factory is an object that has multiple factory methods on it. Looking at the first half of your quote:
... with the Abstract Factory pattern, a class delegates the responsibility of object instantiation to another object via composition ...
What they're saying is that there is an object A, who wants to make a Foo object. Instead of making the Foo object itself (e.g., with a factory method), it's going to get a different object (the abstract factory) to create the Foo object.
To show you the difference, here is a factory method in use:
class A {
public void doSomething() {
Foo f = makeFoo();
f.whatever();
}
protected Foo makeFoo() {
return new RegularFoo();
}
}
class B extends A {
protected Foo makeFoo() {
//subclass is overriding the factory method
//to return something different
return new SpecialFoo();
}
}
And here is an abstract factory in use:
class A {
private Factory factory;
public A(Factory factory) {
this.factory = factory;
}
public void doSomething() {
//The concrete class of "f" depends on the concrete class
//of the factory passed into the constructor. If you provide a
//different factory, you get a different Foo object.
Foo f = factory.makeFoo();
f.whatever();
}
}
interface Factory {
Foo makeFoo();
Bar makeBar();
Aycufcn makeAmbiguousYetCommonlyUsedFakeClassName();
}
//need to make concrete factories that implement the "Factory" interface here
If you only need the number of rows in a query and don't need the actual row data, use count_all_results
echo $this->db
->where('active',1)
->count_all_results('table_name');
You need to add the command 'go' after you set the identity insert. Example:
SET IDENTITY_INSERT sometableWithIdentity ON
go
INSERT sometableWithIdentity (IdentityColumn, col2, col3, ...)
VALUES (AnIdentityValue, col2value, col3value, ...)
SET IDENTITY_INSERT sometableWithIdentity OFF
go
This is using what leech talked about, but making it work for IE (IE doesn't support matches):
function closest(el, selector, stopSelector) {
var retval = null;
while (el) {
if (el.className.indexOf(selector) > -1) {
retval = el;
break
} else if (stopSelector && el.className.indexOf(stopSelector) > -1) {
break
}
el = el.parentElement;
}
return retval;
}
It's not perfect, but it works if the selector is unique enough so it won't accidentally match the incorrect element.
An alternative approach would be to register an event handler on the pagination link like so:
$("#dataTableID_paginate").on("click", "a", function() { alert("clicked") });
Replace "#dataTableID_" with the ID of your table, of course. And I'm using JQuery's ON method as that is the current best practice.
The below regex will help to validate hh:mm format
^([0-1][0-9]|2[0-3]):[0-5][0-9]$
One more solution for the pile, change your .m file to .mm so that it becomes Objective-C++ and use C++ raw literals, like this:
const char *sql_query = R"(SELECT word_id
FROM table1, table2
WHERE table2.word_id = table1.word_id
ORDER BY table1.word ASC)";
Raw literals ignore everything until the termination sequence, which in the default case is parenthesis-quote.
If the parenthesis-quote sequence has to appear in the string somewhere, you can easily specify a custom delimiter too, like this:
const char *sql_query = R"T3RM!N8(
SELECT word_id
FROM table1, table2
WHERE table2.word_id = table1.word_id
ORDER BY table1.word ASC
)T3RM!N8";
Use time
Let's say you have the initial dates as strings like these:
date1 = "31/12/2015"
date2 = "01/01/2016"
You can do the following:
newdate1 = time.strptime(date1, "%d/%m/%Y")
and newdate2 = time.strptime(date2, "%d/%m/%Y")
to convert them to python's date format. Then, the comparison is obvious:
newdate1 > newdate2
will return False
newdate1 < newdate2
will return True
Models don't exist in isolation. The structures you'd define for a simulation of cars entering a car park, an embedded system which guides you to a free space, a car parking billing system or for the automated gates/ticket machines usual in car parks are all different.
It can be usefull. Bindings dose not always work.
<select id="product" class="form-control" name="product" required
ng-model="issue.productId"
ng-change="getProductVersions()"
ng-options="p.id as p.shortName for p in products">
</select>
For example. You fill options list source model from rest-service. Selected value was known befor filling list and was set. After executing rest-request with $http list option be done. But selected option is not set. By unknown reasons AngularJS in shadow $digest executing not bind selected as it shuold be. I gotta use JQuery to set selected. It`s important! Angular in shadow add prefix to value of attr "value" for generated by ng-repeat optinos. For int it is "number:".
$scope.issue.productId = productId;
function activate() {
$http.get('/product/list')
.then(function (response) {
$scope.products = response.data;
if (productId) {
console.log("" + $("#product option").length);//for clarity
$timeout(function () {
console.log("" + $("#product option").length);//for clarity
$('#product').val('number:'+productId);
//$scope.issue.productId = productId;//not work at all
}, 200);
}
});
}