In Jenkins 2.138.3 there are two different types of pipelines.
Declarative and Scripted pipelines.
"Declarative pipelines is a new extension of the pipeline DSL (it is basically a pipeline script with only one step, a pipeline step with arguments (called directives), these directives should follow a specific syntax. The point of this new format is that it is more strict and therefore should be easier for those new to pipelines, allow for graphical editing and much more. scripted pipelines is the fallback for advanced requirements."
jenkins pipeline: agent vs node?
Here is an example of using environment and global variables in a Declarative Pipeline. From what I can tell enviroment are static after they are set.
def browser = 'Unknown'
pipeline {
agent any
environment {
//Use Pipeline Utility Steps plugin to read information from pom.xml into env variables
IMAGE = readMavenPom().getArtifactId()
VERSION = readMavenPom().getVersion()
}
stages {
stage('Example') {
steps {
script {
browser = sh(returnStdout: true, script: 'echo Chrome')
}
}
}
stage('SNAPSHOT') {
when {
expression {
return !env.JOB_NAME.equals("PROD") && !env.VERSION.contains("RELEASE")
}
}
steps {
echo "SNAPSHOT"
echo "${browser}"
}
}
stage('RELEASE') {
when {
expression {
return !env.JOB_NAME.equals("TEST") && !env.VERSION.contains("RELEASE")
}
}
steps {
echo "RELEASE"
echo "${browser}"
}
}
}//end of stages
}//end of pipeline
For some reason shadows don't work if you set <solid>
AND <stroke>
on your custom background drawable. Creating a <layer-list>
with separate layers for fill and borders fixes the issue:
<?xml version="1.0" encoding="utf-8"?>
<!-- Separate layers for solid and stroke, because no shadows get drawn otherwise (using elevation) -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="@color/card_default" />
<corners android:radius="@dimen/card_corner_radius" />
</shape>
</item>
<item>
<shape android:shape="rectangle">
<stroke android:color="@color/card_border" android:width="@dimen/card_border_width"/>
<corners android:radius="@dimen/card_corner_radius" />
</shape>
</item>
</layer-list>
The user "geoand" is right in pointing out the reasons here and giving a solution. But a better approach is to encapsulate your configuration into a separate class, say SystemContiguration java class and then inject this class into what ever services you want to use those fields.
Your current way(@grahamrb) of reading config values directly into services is error prone and would cause refactoring headaches if config setting name is changed.
Since the release of iOS 8, UIAlertView
is now deprecated; UIAlertController is the replacement.
Here is a sample of how it looks in Swift:
let alert = UIAlertController(title: "Hello!", message: "Message", preferredStyle: UIAlertControllerStyle.alert)
let alertAction = UIAlertAction(title: "OK!", style: UIAlertActionStyle.default)
{
(UIAlertAction) -> Void in
}
alert.addAction(alertAction)
present(alert, animated: true)
{
() -> Void in
}
As you can see, the API allows us to implement callbacks for both the action and when we are presenting the alert, which is quite handy!
Updated for Swift 4.2
let alert = UIAlertController(title: "Hello!", message: "Message", preferredStyle: .alert)
let alertAction = UIAlertAction(title: "OK!", style: .default)
{
(UIAlertAction) -> Void in
}
alert.addAction(alertAction)
present(alert, animated: true)
{
() -> Void in
}
See Stack Overflow question How to get current datetime on Windows command line, in a suitable format for using in a filename?.
Create a file, date.bat
:
@echo off
For /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%c-%%a-%%b)
For /f "tokens=1-3 delims=/:/ " %%a in ('time /t') do (set mytime=%%a-%%b-%%c)
set mytime=%mytime: =%
echo %mydate%_%mytime%
Run date.bat
:
C:\>date.bat
2012-06-14_12-47-PM
UPDATE:
You can also do it with one line like this:
for /f "tokens=2-8 delims=.:/ " %%a in ("%date% %time%") do set DateNtime=%%c-%%a-%%b_%%d-%%e-%%f.%%g
I'm wondering why nobody just gave the most simple of answers:
val array: Array<Int> = [1, 2, 3]
As per one of the comments to my original answer, I realized this only works when used in annotations arguments (which was really unexpected for me).
Looks like Kotlin doesn't allow to create array literals outside annotations.
For instance, look at this code using @Option from args4j library:
@Option( name = "-h", aliases = ["--help", "-?"], usage = "Show this help" ) var help: Boolean = false
The option argument "aliases" is of type Array<String>
I wrote up a HOWTO for VST development on C++ with Visual Studio awhile back which details the steps necessary to create a basic plugin for the Windows platform (the Mac version of this article is forthcoming). On Windows, a VST plugin is just a normal DLL, but there are a number of "gotchas", and you need to build the plugin using some specific compiler/linker switches or else it won't be recognized by some hosts.
As for the Mac, a VST plugin is just a bundle with the .vst extension, though there are also a few settings which must be configured correctly in order to generate a valid plugin. You can also download a set of Xcode VST plugin project templates I made awhile back which can help you to write a working plugin on that platform.
As for AudioUnits, Apple has provided their own project templates which are included with Xcode. Apple also has very good tutorials and documentation online:
I would also highly recommend checking out the Juce Framework, which has excellent support for creating cross-platform VST/AU plugins. If you're going open-source, then Juce is a no-brainer, but you will need to pay licensing fees for it if you plan on releasing your work without source code.
I was getting this error after deploying on IIS Server PC.
https://www.microsoft.com/en-us/download/details.aspx?id=42295enter link description here
https://www.microsoft.com/en-us/download/details.aspx?id=45496
It may require restart your computer.
This is handled by adding some padding
to the top of the <body>
.
As per Bootstrap's documentation on .navbar-fixed-top
, try out your own values or use our snippet below. Tip: By default, the navbar
is 50px
high.
body {
padding-top: 70px;
}
Also, take a look at the source for this example and open starter-template.css
.
Try:
//category[@name='Sport' and ./author/text()='James Small']
If you know the width of the span you could just stuff in a left margin.
Try this:
.center { text-align: center}
div.center span { display: table; }
Add the "center: class to your .
If you want some spans centered, but not others, replace the "div.center span" in your style sheet to a class (e.g "center-span") and add that class to the span.
If you are checking against a lot of intervals, I suggest using an interval tree.
It is nice that REST brings meaning to HTTP verbs (as they defined) but I prefer to agree with Scott Peal.
Here is also item from WIKI's extended explanation on POST request:
There are times when HTTP GET is less suitable even for data retrieval. An example of this is when a great deal of data would need to be specified in the URL. Browsers and web servers can have limits on the length of the URL that they will handle without truncation or error. Percent-encoding of reserved characters in URLs and query strings can significantly increase their length, and while Apache HTTP Server can handle up to 4,000 characters in a URL,[5] Microsoft Internet Explorer is limited to 2,048 characters in any URL.[6] Equally, HTTP GET should not be used where sensitive information, such as user names and passwords, have to be submitted along with other data for the request to complete. Even if HTTPS is used, preventing the data from being intercepted in transit, the browser history and the web server's logs will likely contain the full URL in plaintext, which may be exposed if either system is hacked. In these cases, HTTP POST should be used.[7]
I could only suggest to REST team to consider more secure use of HTTP protocol to avoid making consumers struggle with non-secure "good practice".
There is now an even better way to do this in ECMAScript2015 (aka ES6) using the new for of loop. For example, this code does not print the array elements after the number 5:
let arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];_x000D_
for (let el of arr) {_x000D_
console.log(el);_x000D_
if (el === 5) {_x000D_
break;_x000D_
}_x000D_
}
_x000D_
From the docs:
Both for...in and for...of statements iterate over something. The main difference between them is in what they iterate over. The for...in statement iterates over the enumerable properties of an object, in original insertion order. The for...of statement iterates over data that iterable object defines to be iterated over.
Need the index in the iteration? You can use Array.entries()
:
for (const [index, el] of arr.entries()) {
if ( index === 5 ) break;
}
To export db rather it is SQLITE or ROOM:
Firstly, add this permission in AndroidManifest.xml file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Secondly, we drive to code the db functions:
private void exportDB() {
try {
File dbFile = new File(this.getDatabasePath(DATABASE_NAME).getAbsolutePath());
FileInputStream fis = new FileInputStream(dbFile);
String outFileName = DirectoryName + File.separator +
DATABASE_NAME + ".db";
// Open the empty db as the output stream
OutputStream output = new FileOutputStream(outFileName);
// Transfer bytes from the inputfile to the outputfile
byte[] buffer = new byte[1024];
int length;
while ((length = fis.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
// Close the streams
output.flush();
output.close();
fis.close();
} catch (IOException e) {
Log.e("dbBackup:", e.getMessage());
}
}
Create Folder on Daily basis with name of folder is Current date:
public void createBackup() {
sharedPref = getSharedPreferences("dbBackUp", MODE_PRIVATE);
editor = sharedPref.edit();
String dt = sharedPref.getString("dt", new SimpleDateFormat("dd-MM-yy").format(new Date()));
if (dt != new SimpleDateFormat("dd-MM-yy").format(new Date())) {
editor.putString("dt", new SimpleDateFormat("dd-MM-yy").format(new Date()));
editor.commit();
}
File folder = new File(Environment.getExternalStorageDirectory() + File.separator + "BackupDBs");
boolean success = true;
if (!folder.exists()) {
success = folder.mkdirs();
}
if (success) {
DirectoryName = folder.getPath() + File.separator + sharedPref.getString("dt", "");
folder = new File(DirectoryName);
if (!folder.exists()) {
success = folder.mkdirs();
}
if (success) {
exportDB();
}
} else {
Toast.makeText(this, "Not create folder", Toast.LENGTH_SHORT).show();
}
}
Assign the DATABASE_NAME without .db extension and its data type is string
Here is a real world example. In this it is necessary to initialize the array foundFiles
first to zero length.
(As emphasized in other answers: This initializes not an element and especially not an element with index zero because that would mean the array had length 1. The array has zero length after this line!).
If the part = string[0]
is omitted, there is a compiler error!
This is because of the catch block without rethrow. The C# compiler recognizes the code path, that the function Directory.GetFiles()
can throw an Exception, so that the array could be uninitialized.
Before anyone says, not rethrowing the exception would be bad error handling: This is not true. Error handling has to fit the requirements.
In this case it is assumed that the program should continue in case of a directory which cannot be read, and not break- the best example is a function traversing through a directory structure. Here the error handling is just logging it. Of course this could be done better, e.g. collecting all directories with failed GetFiles(Dir)
calls in a list, but this will lead too far here.
It is enough to state that avoiding throw
is a valid scenario, and so the array has to be initialized to length zero. It would be enough to do this in the catch block, but this would be bad style.
The call to GetFiles(Dir)
resizes the array.
string[] foundFiles= new string[0];
string dir = @"c:\";
try
{
foundFiles = Directory.GetFiles(dir); // Remark; Array is resized from length zero
}
// Please add appropriate Exception handling yourself
catch (IOException)
{
Console.WriteLine("Log: Warning! IOException while reading directory: " + dir);
// throw; // This would throw Exception to caller and avoid compiler error
}
foreach (string filename in foundFiles)
Console.WriteLine("Filename: " + filename);
int max = 50;
int min = 1;
double random = Math.random() * 49 + 1;
or
int random = (int )(Math.random() * 50 + 1);
This will give you value from 1 to 50 in case of int or 1.0 (inclusive) to 50.0 (exclusive) in case of double
Why?
random() method returns a random number between 0.0 and 0.9..., you multiply it by 50, so upper limit becomes 0.0 to 49.999... when you add 1, it becomes 1.0 to 50.999..., now when you truncate to int, you get 1 to 50. (thanks to @rup in comments). leepoint's awesome write-up on both the approaches.
Random rand = new Random();
int value = rand.nextInt(50);
This will give value from 0 to 49.
For 1 to 50: rand.nextInt((max - min) + 1) + min;
Source of some Java Random awesomeness.
You need a back inserter to copy into vectors:
std::copy(str.c_str(), str.c_str()+str.length(), back_inserter(data));
Erland Sommarskog has maintained the authoritative answer to this question for the last 16 years: Arrays and Lists in SQL Server.
There are at least a dozen ways to pass an array or list to a query; each has their own unique pros and cons.
I really can't recommend enough to read the article to learn about the tradeoffs among all these options.
Use below Code, It worked for me.
<script type="text/javascript">
$(document).ready(function () {
$('#dialog').dialog({
autoOpen: false,
title: 'Basic Dialog'
});
$('#contactUs').click(function () {
$('#dialog').dialog('open');
});
});
</script>
How to get append input field value as json like
temp:[
{
test:'test 1',
testData: [
{testName: 'do',testId:''}
],
testRcd:'value'
},
{
test:'test 2',
testData: [
{testName: 'do1',testId:''}
],
testRcd:'value'
}
],
Either the parameter supplied for ZIP_CODE
is larger (in length) than ZIP_CODE
s column width or the parameter supplied for CITY
is larger (in length) than CITY
s column width.
It would be interesting to know the values supplied for the two ?
placeholders.
Suppose you have not renamed your public folder. Your css and js files are in css and js subfolders in public folder. Now your header will be :
<link rel="stylesheet" type="text/css" href="/public/css/icon.css"/>
<script type="text/javascript" src="/public/js/jquery.easyui.min.js"></script>
if you have options
return this.http.post(`${this.endpoint}/account/login`,payload, { ...options, responseType: 'text' })
You could use THROW
(available in SQL Server 2012+):
THROW 50000, 'Your custom error message', 1
THROW <error_number>, <message>, <state>
You could do it this way:
-- Notice how STATE got moved inside the condition:
CASE WHEN STATE = 2 AND RetailerProcessType IN (1, 2) THEN '"AUTHORISED"'
WHEN STATE = 1 AND RetailerProcessType = 2 THEN '"PENDING"'
ELSE '"DECLINED"'
END
The reason you can do an AND
here is that you are not checking the CASE
of STATE
, but instead you are CASING Conditions.
The key part here is that the STATE
condition is a part of the WHEN
.
There is a better algorithm, which needs at most 6 iterations to converge to maximum precision for double numbers:
#include <math.h>
double sqrt(double x) {
if (x <= 0)
return 0; // if negative number throw an exception?
int exp = 0;
x = frexp(x, &exp); // extract binary exponent from x
if (exp & 1) { // we want exponent to be even
exp--;
x *= 2;
}
double y = (1+x)/2; // first approximation
double z = 0;
while (y != z) { // yes, we CAN compare doubles here!
z = y;
y = (y + x/y) / 2;
}
return ldexp(y, exp/2); // multiply answer by 2^(exp/2)
}
Algorithm starts with 1 as first approximation for square root value.
Then, on each step, it improves next approximation by taking average between current value y
and x/y
. If y
= sqrt(x)
, it will be the same. If y
> sqrt(x)
, then x/y
< sqrt(x)
by about the same amount. In other words, it will converge very fast.
UPDATE: To speed up convergence on very large or very small numbers, changed sqrt()
function to extract binary exponent and compute square root from number in [1, 4)
range. It now needs frexp()
from <math.h>
to get binary exponent, but it is possible to get this exponent by extracting bits from IEEE-754 number format without using frexp()
.
res.json
forces the argument to JSON. res.send
will take an non-json object or non-json array and send another type. For example:
This will return a JSON number.
res.json(100)
This will return a status code and issue a warning to use sendStatus.
res.send(100)
If your argument is not a JSON object or array (null,undefined,boolean,string), and you want to ensure it is sent as JSON, use res.json
.
They have different types and different definitions:
infixr 9 .
(.) :: (b -> c) -> (a -> b) -> (a -> c)
(f . g) x = f (g x)
infixr 0 $
($) :: (a -> b) -> a -> b
f $ x = f x
($)
is intended to replace normal function application but at a different precedence to help avoid parentheses. (.)
is for composing two functions together to make a new function.
In some cases they are interchangeable, but this is not true in general. The typical example where they are is:
f $ g $ h $ x
==>
f . g . h $ x
In other words in a chain of $
s, all but the final one can be replaced by .
Here is an implementation, character by character. Should work with "(One Two Three)"
public static string ToInitcap(this string str)
{
if (string.IsNullOrEmpty(str))
return str;
char[] charArray = new char[str.Length];
bool newWord = true;
for (int i = 0; i < str.Length; ++i)
{
Char currentChar = str[i];
if (Char.IsLetter(currentChar))
{
if (newWord)
{
newWord = false;
currentChar = Char.ToUpper(currentChar);
}
else
{
currentChar = Char.ToLower(currentChar);
}
}
else if (Char.IsWhiteSpace(currentChar))
{
newWord = true;
}
charArray[i] = currentChar;
}
return new string(charArray);
}
Try This
CKEDITOR.instances['textareaId'].setData(value);
It was pretty exciting to make this method work, so it makes a clone of a function using Function call.
Some limitations about closures described at MDN Function Reference
function cloneFunc( func ) {
var reFn = /^function\s*([^\s(]*)\s*\(([^)]*)\)[^{]*\{([^]*)\}$/gi
, s = func.toString().replace(/^\s|\s$/g, '')
, m = reFn.exec(s);
if (!m || !m.length) return;
var conf = {
name : m[1] || '',
args : m[2].replace(/\s+/g,'').split(','),
body : m[3] || ''
}
var clone = Function.prototype.constructor.apply(this, [].concat(conf.args, conf.body));
return clone;
}
Enjoy.
I'm running Ubuntu 14.04; and apt still couldn't find package; I tried all the answers above and more. The URL that worked for me is this:
echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list
Source: http://www.liquidweb.com/kb/how-to-install-mongodb-on-ubuntu-14-04/
Typically the register key and value are constants in the program. If so, here is an example how to read a DWORD registry value Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem\LongPathsEnabled
:
#include <windows.h>
DWORD val;
DWORD dataSize = sizeof(val);
if (ERROR_SUCCESS == RegGetValueA(HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Control\\FileSystem", "LongPathsEnabled", RRF_RT_DWORD, nullptr /*type not required*/, &val, &dataSize)) {
printf("Value is %i\n", val);
// no CloseKey needed because it is a predefined registry key
}
else {
printf("Error reading.\n");
}
To adapt for other value types, see https://docs.microsoft.com/en-us/windows/win32/api/winreg/nf-winreg-reggetvaluea for complete spec.
This worked for me:
df[,names(df) %in% colnames(df)[grepl(str,colnames(df))]]
If you have Android installed in windows, you will also find it here: C:\Program Files\Android\jdk\microsoft_dist_openjdk_1.8.0.25\jre\bin
Just use matrix
:
matrix(vec,nrow = 7,ncol = 7)
One advantage of using matrix
rather than simply altering the dimension attribute as Gavin points out, is that you can specify whether the matrix is filled by row or column using the byrow
argument in matrix
.
It seems people mix a content encoding with a built files/resources encoding. Having only maven properties is not enough. Having -Dfile.encoding=UTF8
not effective. To avoid having issues with encoding you should follow the following simple rules
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
Always set encoding explicitly, when work with files, strings, IO in your code. If you do not follow this rule, your application depend on the environment. The -Dfile.encoding=UTF8
exactly is responsible for run-time environment configuration, but we should not depend on it. If you have thousands of clients, it takes more effort to configure systems and to find issues because of it. You just have an additional dependency on it which you can avoid by setting it explicitly. Most methods in Java that use a default encoding are marked as deprecated because of it.
Make sure the content, you are working with, also is in the same encoding, that you expect. If it is not, the previous steps do not matter! For instance a file will not be processed correctly, if its encoding is not UTF8 but you expect it. To check file encoding on Linux:
$ file --mime F_PRDAUFT.dsv
@Produces("application/json; charset=UTF-8") @Consumes("application/json; charset=UTF-8")
Hope this will be useful to someone.
Note - You need not have to uninstall/reinstall anything.
If you meant just ABC as simple value, answer above is the one that works fine.
If you meant concatenation of values of rows that are not selected by your main query, you will need to use a subquery.
Something like this may work:
SELECT t1.col1,
t1.col2,
(SELECT GROUP_CONCAT(col2 SEPARATOR '') FROM Table1 t2 WHERE t2.col1 != 0) as col3
FROM Table1 t1
WHERE t1.col1 = 0;
Actual syntax maybe a bit off though
var x = '<p>blah</p><div><a href="http://bs.serving-sys.com/BurstingPipe/adServer.bs?cn=brd&FlightID=2997227&Page=&PluID=0&Pos=9088" target="_blank"><img src="http://bs.serving-sys.com/BurstingPipe/adServer.bs?cn=bsr&FlightID=2997227&Page=&PluID=0&Pos=9088" border=0 width=300 height=250></a></div>';
$(x).children('div').html();
Another recursive approach:
# change directory to target folder:
cd /Volumes/path/to/folder
# find all things of type "f" (file),
# then pipe "|" each result as an argument (xargs -0)
# to the "xattr -c" command:
find . -type f -print0 | xargs -0 xattr -c
# Sometimes you may have to use a star * instead of the dot.
# The dot just means "here" (whereever your cd'd to
find * -type f -print0 | xargs -0 xattr -c
That worked for me:
$ export LC_ALL=en_US.UTF-8
$ export LANG=en_US.UTF-8
You need to escape backslash with a \
$str = str_replace ("\\", "/", $str);
While working through the ASP.NET MVC 4 Tutorial with Visual Studio 2012 I encountered the same error in the "Accessing Your Model's Data from a Controller section". The fix is quite simple.
When creating a new ASP.NET MVC 4 Web Application in Visual Studio 2012 within the _Layout.cshtml document in the shared folder the "scripts" section is commented out.
@*@RenderSection("scripts", required: false)*@
Simply un-comment the line and the sample code should work.
@RenderSection("scripts", required: false)
To get all the records where record created date is today's date Use the code after WHERE clause
WHERE CAST(Submission_date AS DATE) = CAST( curdate() AS DATE)
Simply use fs
module and something like this:
fs.appendFile('server.log', 'string to append', function (err) {
if (err) return console.log(err);
console.log('Appended!');
});
You can use assign
(doc) to change the value of perf.a1:
> assign(paste("perf.a", "1", sep=""),5)
> perf.a1
[1] 5
I recomend http-request built on apache http api.
HttpRequest<String> httpRequest = HttpRequestBuilder.createPost(yourUri, String.class)
.responseDeserializer(ResponseDeserializer.ignorableDeserializer()).build();
public void send(){
ResponseHandler<String> responseHandler = httpRequest.execute("details", yourJsonData);
int statusCode = responseHandler.getStatusCode();
String responseContent = responseHandler.orElse(null); // returns Content from response. If content isn't present returns null.
}
If you want send JSON
as request body you can:
ResponseHandler<String> responseHandler = httpRequest.executeWithBody(yourJsonData);
I higly recomend read documentation before use.
It's also cleaner to use @JoinTable
when an Entity could be the child in several parent/child relationships with different types of parents. To follow up with Behrang's example, imagine a Task can be the child of Project, Person, Department, Study, and Process.
Should the task
table have 5 nullable
foreign key fields? I think not...
print("Hello, World!")
You are probably using Python 3.0, where print
is now a function (hence the parenthesis) instead of a statement.
Rather than a brute force loop through the list (eg 1 to 10000), rather use an iterative search approach : The List needs to be sorted by the element to be tested.
Start search at the middle element size()/2 eg 5000 if search item greater than element at 5000, then test the element at the midpoint between the upper(10000) and midpoint(5000) - 7500
keep doing this until you reach the match (or use a brute force loop through once you get down to a smaller range (eg 20 items)
You can search a list of 10000 in around 13 to 14 tests, rather than potentially 9999 tests.
You have to specify the folder where you are saving it and it has to exist, in other case it will throw an error.
var s = txt.CreateTextFile("c:\\11.txt", true);
Just to update these answers slightly with the new literal syntax in iOS 6--you can use Paths = @[indexPath] for a single object, or Paths = @[indexPath1, indexPath2,...] for multiple objects.
Personally, I've found the literal syntax for arrays and dictionaries to be immensely useful and big time savers. It's just easier to read, for one thing. And it removes the need for a nil at the end of any multi-object list, which has always been a personal bugaboo. We all have our windmills to tilt with, yes? ;-)
Just thought I'd throw this into the mix. Hope it helps.
To invert a boolean Series, use ~s
:
In [7]: s = pd.Series([True, True, False, True])
In [8]: ~s
Out[8]:
0 False
1 False
2 True
3 False
dtype: bool
Using Python2.7, NumPy 1.8.0, Pandas 0.13.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, best of 3: 91.8 µs per loop
In [11]: %timeit ~s
10000 loops, best of 3: 73.5 µs per loop
In [12]: %timeit (-s)
10000 loops, best of 3: 73.5 µs per loop
As of Pandas 0.13.0, Series are no longer subclasses of numpy.ndarray
; they are now subclasses of pd.NDFrame
. This might have something to do with why np.invert(s)
is no longer as fast as ~s
or -s
.
Caveat: timeit
results may vary depending on many factors including hardware, compiler, OS, Python, NumPy and Pandas versions.
You can use .length
, like this:
var count = $("ul li").length;
.length
tells how many matches the selector found, so this counts how many <li>
under <ul>
elements you have...if there are sub-children, use "ul > li"
instead to get only direct children. If you have other <ul>
elements in your page, just change the selector to match only his one, for example if it has an ID you'd use "#myListID > li"
.
In other situations where you don't know the child type, you can use the *
(wildcard) selector, or .children()
, like this:
var count = $(".parentSelector > *").length;
or:
var count = $(".parentSelector").children().length;
It looks to me as though the basic problem is that you have one wait()
call rather than a loop that waits until there are no more children. You also only wait if the last fork()
is successful rather than if at least one fork()
is successful.
You should only use _exit()
if you don't want normal cleanup operations - such as flushing open file streams including stdout
. There are occasions to use _exit()
; this is not one of them. (In this example, you could also, of course, simply have the children return instead of calling exit()
directly because returning from main()
is equivalent to exiting with the returned status. However, most often you would be doing the forking and so on in a function other than main()
, and then exit()
is often appropriate.)
Hacked, simplified version of your code that gives the diagnostics I'd want. Note that your for
loop skipped the first element of the array (mine doesn't).
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
int main(void)
{
pid_t child_pid, wpid;
int status = 0;
int i;
int a[3] = {1, 2, 1};
printf("parent_pid = %d\n", getpid());
for (i = 0; i < 3; i++)
{
printf("i = %d\n", i);
if ((child_pid = fork()) == 0)
{
printf("In child process (pid = %d)\n", getpid());
if (a[i] < 2)
{
printf("Should be accept\n");
exit(1);
}
else
{
printf("Should be reject\n");
exit(0);
}
/*NOTREACHED*/
}
}
while ((wpid = wait(&status)) > 0)
{
printf("Exit status of %d was %d (%s)\n", (int)wpid, status,
(status > 0) ? "accept" : "reject");
}
return 0;
}
Example output (MacOS X 10.6.3):
parent_pid = 15820
i = 0
i = 1
In child process (pid = 15821)
Should be accept
i = 2
In child process (pid = 15822)
Should be reject
In child process (pid = 15823)
Should be accept
Exit status of 15823 was 256 (accept)
Exit status of 15822 was 0 (reject)
Exit status of 15821 was 256 (accept)
http://encosia.com/using-cors-to-access-asp-net-services-across-domains/
refer the above link for more details on Cross domain resource sharing.
you can try using JSONP . If the API is not supporting jsonp, you have to create a service which acts as a middleman between the API and your client. In my case, i have created a asmx service.
sample below:
ajax call:
$(document).ready(function () {
$.ajax({
crossDomain: true,
type:"GET",
contentType: "application/json; charset=utf-8",
async:false,
url: "<your middle man service url here>/GetQuote?callback=?",
data: { symbol: 'ctsh' },
dataType: "jsonp",
jsonpCallback: 'fnsuccesscallback'
});
});
service (asmx) which will return jsonp:
[WebMethod]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public void GetQuote(String symbol,string callback)
{
WebProxy myProxy = new WebProxy("<proxy url here>", true);
myProxy.Credentials = new System.Net.NetworkCredential("username", "password", "domain");
StockQuoteProxy.StockQuote SQ = new StockQuoteProxy.StockQuote();
SQ.Proxy = myProxy;
String result = SQ.GetQuote(symbol);
StringBuilder sb = new StringBuilder();
JavaScriptSerializer js = new JavaScriptSerializer();
sb.Append(callback + "(");
sb.Append(js.Serialize(result));
sb.Append(");");
Context.Response.Clear();
Context.Response.ContentType = "application/json";
Context.Response.Write(sb.ToString());
Context.Response.End();
}
I started a process from a Windows Service over the Win32 API in the session from the user which is actually logged in (in Task Manager session 1 not 0). In this was we can get to know, which variable is the best.
For all 7 cases from the question above, the following are the results:
Path1: C:\Program Files (x86)\MyProgram
Path2: C:\Program Files (x86)\MyProgram
Path3: C:\Program Files (x86)\MyProgram\
Path4: C:\Windows\system32
Path5: C:\Windows\system32
Path6: file:\C:\Program Files (x86)\MyProgram
Path7: C:\Program Files (x86)\MyProgram
Perhaps it's helpful for some of you, doing the same stuff, when you search the best variable for your case.
In SQL Server do like this:
where cast(columnName as date) = cast(getdate() -1 as date)
You should cast both sides of the expression to date to avoid issues with time formatting.
If you need to control interval in more detail, then you should try something like:
declare @start datetime = cast(getdate() - 1 as date)
declare @end datetime = cast(getdate() - 1 as date)
set @end = dateadd(second, 86399, @end)
With resources, there's built-in support for providing alternatives for different languages, OS versions, screen orientations, etc., as described here. None of that is available with assets. Also, many parts of the API support the use of resource identifiers. Finally, the names of the resources are turned into constant field names that are checked at compile time, so there's less of an opportunity for mismatches between the code and the resources themselves. None of that applies to assets.
So why have an assets folder at all? If you want to compute the asset you want to use at run time, it's pretty easy. With resources, you would have to declare a list of all the resource IDs that might be used and compute an index into the the list. (This is kind of awkward and introduces opportunities for error if the set of resources changes in the development cycle.) (EDIT: you can retrieve a resource ID by name using getIdentifier
, but this loses the benefits of compile-time checking.) Assets can also be organized into a folder hierarchy, which is not supported by resources. It's a different way of managing data. Although resources cover most of the cases, assets have their occasional use.
One other difference: resources defined in a library project are automatically imported to application projects that depend on the library. For assets, that doesn't happen; asset files must be present in the assets directory of the application project(s). [EDIT: With Android's new Gradle-based build system (used with Android Studio), this is no longer true. Asset directories for library projects are packaged into the .aar files, so assets defined in library projects are merged into application projects (so they do not have to be present in the application's /assets
directory if they are in a referenced library).]
EDIT: Yet another difference arises if you want to package a custom font with your app. There are API calls to create a Typeface
from a font file stored in the file system or in your app's assets/
directory. But there is no API to create a Typeface
from a font file stored in the res/
directory (or from an InputStream
, which would allow use of the res/
directory). [NOTE: With Android O (now available in alpha preview) you will be able to include custom fonts as resources. See the description here of this long-overdue feature. However, as long as your minimum API level is 25 or less, you'll have to stick with packaging custom fonts as assets rather than as resources.]
You can't use the naked domain of your-domain.com
if it is not redirected to the www.your-domain.com
. Heroku use the www.yourdomain.com
which act here as a subdomain. So when you follow the default instruction to use your-domain.com
then you will need to assign both of them.
We can actually assign only the naked domain without the www.your-domain.com
. Use only your-domain.com
when the domain's dns provider (NameServers) support ALIAS or ANAME for the @ Record to example.herokuapp.com
without CNAME www.your-domain.com
to it.
It will let you to point www.your-domain.com
to other hosting separately (independent).
Defining your private methods in the @implementation
block is ideal for most purposes. Clang will see these within the @implementation
, regardless of declaration order. There is no need to declare them in a class continuation (aka class extension) or named category.
In some cases, you will need to declare the method in the class continuation (e.g. if using the selector between the class continuation and the @implementation
).
static
functions are very good for particularly sensitive or speed critical private methods.
A convention for naming prefixes can help you avoid accidentally overriding private methods (I find the class name as a prefix safe).
Named categories (e.g. @interface MONObject (PrivateStuff)
) are not a particularly good idea because of potential naming collisions when loading. They're really only useful for friend or protected methods (which are very rarely a good choice). To ensure you are warned of incomplete category implementations, you should actually implement it:
@implementation MONObject (PrivateStuff)
...HERE...
@end
Here's a little annotated cheat sheet:
MONObject.h
@interface MONObject : NSObject
// public declaration required for clients' visibility/use.
@property (nonatomic, assign, readwrite) bool publicBool;
// public declaration required for clients' visibility/use.
- (void)publicMethod;
@end
MONObject.m
@interface MONObject ()
@property (nonatomic, assign, readwrite) bool privateBool;
// you can use a convention where the class name prefix is reserved
// for private methods this can reduce accidental overriding:
- (void)MONObject_privateMethod;
@end
// The potentially good thing about functions is that they are truly
// inaccessible; They may not be overridden, accidentally used,
// looked up via the objc runtime, and will often be eliminated from
// backtraces. Unlike methods, they can also be inlined. If unused
// (e.g. diagnostic omitted in release) or every use is inlined,
// they may be removed from the binary:
static void PrivateMethod(MONObject * pObject) {
pObject.privateBool = true;
}
@implementation MONObject
{
bool anIvar;
}
static void AnotherPrivateMethod(MONObject * pObject) {
if (0 == pObject) {
assert(0 && "invalid parameter");
return;
}
// if declared in the @implementation scope, you *could* access the
// private ivars directly (although you should rarely do this):
pObject->anIvar = true;
}
- (void)publicMethod
{
// declared below -- but clang can see its declaration in this
// translation:
[self privateMethod];
}
// no declaration required.
- (void)privateMethod
{
}
- (void)MONObject_privateMethod
{
}
@end
Another approach which may not be obvious: a C++ type can be both very fast and provide a much higher degree of control, while minimizing the number of exported and loaded objc methods.
I have been trying to do this for a while also. Here is what I do now. Highlight the email you want to create as a file. Click on Create. Hover over Special, then click on Link message. This will open up a new tab for the link. At the bottom of the message is a small yellow piece of paper icon. Copy this icon and paste into your message like you would any other file. It is tiny, so I put a statement like "see email attachment ---->" in front of the icon. You might like this way. Not sure though.
List<Object[]> testNovedads = crudService.createNativeQuery(
"SELECT ID_NOVEDAD_PK, OBSERVACIONES, ID_SOLICITUD_PAGO_FK FROM DBSEGUIMIENTO.SC_NOVEDADES WHERE ID_NOVEDAD_PK < 2000");
Convertir<TestNovedad> convertir = new Convertir<TestNovedad>();
Collection<TestNovedad> novedads = convertir.toList(testNovedads, TestNovedad.class);
for (TestNovedad testNovedad : novedads) {
System.out.println(testNovedad.toString());
}
public Collection<T> toList(List<Object[]> objects, Class<T> type) {
Gson gson = new Gson();
JSONObject jsonObject = new JSONObject();
Collection<T> collection = new ArrayList<>();
Field[] fields = TestNovedad.class.getDeclaredFields();
for (Object[] object : objects) {
int pos = 0;
for (Field field : fields) {
jsonObject.put(field.getName(), object[pos++]);
}
collection.add(gson.fromJson(jsonObject.toString(), type));
}
return collection;
}
I add one more path unmentioned in this answer https://stackoverflow.com/a/26009627/4609353
but very important is Edit Configurations
Since Android 7.0 you can use adb shell cmd package resolve-activity
command to get the default activity of an installed app like this:
adb shell "cmd package resolve-activity --brief com.google.android.calculator | tail -n 1"
com.google.android.calculator/com.android.calculator2.Calculator
You get this error because pallete is full. What you need to do is override preset color. Here is an example of function I'm using:
public HSSFColor setColor(HSSFWorkbook workbook, byte r,byte g, byte b){
HSSFPalette palette = workbook.getCustomPalette();
HSSFColor hssfColor = null;
try {
hssfColor= palette.findColor(r, g, b);
if (hssfColor == null ){
palette.setColorAtIndex(HSSFColor.LAVENDER.index, r, g,b);
hssfColor = palette.getColor(HSSFColor.LAVENDER.index);
}
} catch (Exception e) {
logger.error(e);
}
return hssfColor;
}
And later use it for background color:
HSSFColor lightGray = setColor(workbook,(byte) 0xE0, (byte)0xE0,(byte) 0xE0);
style2.setFillForegroundColor(lightGray.getIndex());
style2.setFillPattern(CellStyle.SOLID_FOREGROUND);
I had the same problem. It was because I had accidentally used a relative path with the symbolic link.
Are you sure you used full paths, e.g.:
ln -s /etc/nginx/sites-available/example.com.conf /etc/nginx/sites-enabled/example.com.conf
Although I'm not answering the original question concering the no-op command, many (if not most) problems when one may think "in this branch I have to do nothing" can be bypassed by simply restructuring the logic so that this branch won't occur.
I try to give a general rule by using the OPs example
do nothing when $a is greater than "10", print "1" if $a is less than "5", otherwise, print "2"
we have to avoid a branch where $a
gets more than 10, so $a < 10
as a general condition can be applied to every other, following condition.
In general terms, when you say do nothing when X, then rephrase it as avoid a branch where X. Usually you can make the avoidance happen by simply negating X and applying it to all other conditions.
So the OPs example with the rule applied may be restructured as:
if [ "$a" -lt 10 ] && [ "$a" -le 5 ]
then
echo "1"
elif [ "$a" -lt 10 ]
then
echo "2"
fi
Just a variation of the above, enclosing everything in the $a < 10
condition:
if [ "$a" -lt 10 ]
then
if [ "$a" -le 5 ]
then
echo "1"
else
echo "2"
fi
fi
(For this specific example @Flimzys restructuring is certainly better, but I wanted to give a general rule for all the people searching how to do nothing.)
If you have cloned your repo using url that contains your username, then you should also change remote.origin.url
property because otherwise it keeps asking password for the old username.
example:
remote.origin.url=https://<old_uname>@<repo_url>
should change to
remote.origin.url=https://<new_uname>@<repo_url>
I'm new to Python, but found a way to convert
2017-05-27T07:20:18.000-04:00
to
2017-05-27T07:20:18
without downloading new utilities.
from datetime import datetime, timedelta
time_zone1 = int("2017-05-27T07:20:18.000-04:00"[-6:][:3])
>>returns -04
item_date = datetime.strptime("2017-05-27T07:20:18.000-04:00".replace(".000", "")[:-6], "%Y-%m-%dT%H:%M:%S") + timedelta(hours=-time_zone1)
I'm sure there are better ways to do this without slicing up the string so much, but this got the job done.
Follow this simple steps:
Often the reason you want to reverse the vector is because you fill it by pushing all the items on at the end but were actually receiving them in reverse order. In that case you can reverse the container as you go by using a deque
instead and pushing them directly on the front. (Or you could insert the items at the front with vector::insert()
instead, but that would be slow when there are lots of items because it has to shuffle all the other items along for every insertion.) So as opposed to:
std::vector<int> foo;
int nextItem;
while (getNext(nextItem)) {
foo.push_back(nextItem);
}
std::reverse(foo.begin(), foo.end());
You can instead do:
std::deque<int> foo;
int nextItem;
while (getNext(nextItem)) {
foo.push_front(nextItem);
}
// No reverse needed - already in correct order
Google crawlers are not smart enough, they can't crawl relative URLs, that's why it's always recommended to use absolute URL's for better crawlability and indexability.
Therefore, you can not use this variation
> sitemap: /sitemap.xml
Recommended syntax is
Sitemap: https://www.yourdomain.com/sitemap.xml
Note:
You can find the execution time in second with a single function.
// ampersand is important thing here
function microSec( & $ms ) {
if (\floatval( $ms ) == 0) {
$ms = microtime( true );
}
else {
$originalMs = $ms;
$ms = 0;
return microtime( true ) - $originalMs;
}
}
// you don't have to define $ms variable. just function needs
// it to calculate the difference.
microSec($ms);
sleep(10);
echo microSec($ms) . " seconds"; // 10 seconds
for( $i = 0; $i < 10; $i++) {
// you can use same variable everytime without assign a value
microSec($ms);
sleep(1);
echo microSec($ms) . " seconds"; // 1 second
}
for( $i = 0; $i < 10; $i++) {
// also you can use temp or useless variables
microSec($xyzabc);
sleep(1);
echo microSec($xyzabc) . " seconds"; // 1 second
}
To Add a little to the above answers:
If you are wanting to commit a folder like the above
git add foldername
git commit -m "commit operation"
To add the folder you will need to be on the same level as, or above, the folder you are trying to add.
For example: App/Storage/Emails/email.php
If you are trying to add the "Storage" file but you have been working inside it on the email.php document you will not be able to add the "Storage" file unless you have 'changed directory' (cd ../) back up to the same level, or higher, as the Storage file itself
PhpStorm 2020
#---------------------------------------------------------------------
# Maximum file size (kilobytes) IDE should provide code assistance for.
# The larger file is the slower its editor works and higher overall system memory
requirements are
# if code assistance is enabled. Remove this property or set to very large number
if you need
# code assistance for any files available regardless their size.
#---------------------------------------------------------------------
idea.max.intellisense.filesize=2500
This might not update sometimes and you might need to edit the root idea.properties file.
To edit this file for any version of Idea
idea.max.intellisense.filesize=
idea.max.intellisense.filesize=your_required_size
i.e idea.max.intellisense.filesize=10480
NB by default this size is in kb
In Python function are first class citezens, so you can just assign it to a property like any other value. Here we are assigning the method of A
's hello to a property on B
. After __init__
, hello will be attached to B as self.hello
, which is actually a reference to A's hello:
class A:
def hello(self, msg):
print(f"Hello {msg}")
class B:
hello = A.hello
print(A.hello)
print(B.hello)
b = B()
b.hello("good looking!")
Prints:
<function A.hello at 0x7fcce55b9e50>
<function A.hello at 0x7fcce55b9e50>
Hello good looking!
I hope it will help someone else.
This error seems to occur also when you UNintentionally send an object to React child components.
Example of it is passing to child component new Date('....') as follows:
const data = {name: 'ABC', startDate: new Date('2011-11-11')}
...
<GenInfo params={data}/>
If you send it as value of a child component parameter you would be sending a complex Object and you may get the same error as stated above.
Check if you are passing something similar (that generates Object under the hood).
If you updated Internet Explorer and began having technical problems, you can use the Compatibility View feature to emulate a previous version of Internet Explorer.
For instructions, see the section below that corresponds with your version. To find your version number, click Help > About Internet Explorer. Internet Explorer 11
To edit the Compatibility View list:
Open the desktop, and then tap or click the Internet Explorer icon on the taskbar.
Tap or click the Tools button (Image), and then tap or click Compatibility View settings.
To remove a website:
Click the website(s) where you would like to turn off Compatibility View, clicking Remove after each one.
To add a website:
Under Add this website, enter the website(s) where you would like to turn on Compatibility View, clicking Add after each one.
var firstTime = DateTime.Now;
var secondTime = DateTime.Now.AddMilliseconds(600);
var diff = secondTime.Subtract(firstTime).Milliseconds;
// var diff = DateTime.Now.AddMilliseconds(600).Subtract(DateTime.Now).Milliseconds;
equals
if hashCode
differs.hashCode
if (obj1 == obj2)
.hashCode
and/or equals
just to iterate - you're not comparing objectsThe $(this).html().replace(',', '')
shouldn't actually modify the page. Are you sure the commas are being removed in the page?
If it is, this addCommas function should do the trick.
function addCommas(nStr) {
nStr += '';
var x = nStr.split('.');
var x1 = x[0];
var x2 = x.length > 1 ? '.' + x[1] : '';
var rgx = /(\d+)(\d{3})/;
while (rgx.test(x1)) {
x1 = x1.replace(rgx, '$1' + ',' + '$2');
}
return x1 + x2;
}
If you manually write out the query with static date values (e.g. '2009-10-29 13:13:07.440') do you get any rows?
So, you are saying that the following two queries produce correct results:
SELECT DISTINCT pat.PublicationID
FROM PubAdvTransData AS pat
INNER JOIN PubAdvertiser AS pa
ON pat.AdvTransID = pa.AdvTransID
WHERE (pat.LastAdDate > '2009-10-29 13:13:07.440') AND (pa.AdvertiserID = 12345))
DECLARE @sp_Date DATETIME
SET @sp_Date = '2009-10-29 13:13:07.440'
SELECT DISTINCT pat.PublicationID
FROM PubAdvTransData AS pat
INNER JOIN PubAdvertiser AS pa
ON pat.AdvTransID = pa.AdvTransID
WHERE (pat.LastAdDate > @sp_Date) AND (pa.AdvertiserID = 12345))
You can create your own view and display it when application starts and hide it with timer. Please avoid delaying app start as its bad idea
32-bit Java requires contiguous free space in memory to run. If you specify a large heap size, there may not be so much contiguous free space in memory even if you have much more free space available than necessary.
Installing a 64-bit version of Java helps in these cases, the contiguous memory requirements only applies to 32-bit Java.
Don't need to quote css attributes and you should specify an unit. (You should use an external css file too..!)
In addtion to align-self
you can also consider auto margin which will do almost the same thing
.container {_x000D_
background: red;_x000D_
height: 200px;_x000D_
flex-direction: column;_x000D_
padding: 10px;_x000D_
display: flex;_x000D_
}_x000D_
a {_x000D_
margin-right:auto;_x000D_
padding: 10px 40px;_x000D_
background: pink;_x000D_
}
_x000D_
<div class="container">_x000D_
<a href="#">Test</a>_x000D_
</div>
_x000D_
Yes: TIME_CREATED contains a date and a time. Use TRUNC
to strip the time:
SELECT EMP_NAME, DEPT
FROM EMPLOYEE
WHERE TRUNC(TIME_CREATED) = TO_DATE('26/JAN/2011','dd/mon/yyyy')
UPDATE:
As Dave Costa points out in the comment below, this will prevent Oracle from using the index of the column TIME_CREATED
if it exists. An alternative approach without this problem is this:
SELECT EMP_NAME, DEPT
FROM EMPLOYEE
WHERE TIME_CREATED >= TO_DATE('26/JAN/2011','dd/mon/yyyy')
AND TIME_CREATED < TO_DATE('26/JAN/2011','dd/mon/yyyy') + 1
Clone the repository as normal:
git clone git://github.com/rspec/rspec-tmbundle.git RSpec.tmbundle
Then checkout the tag you want like so:
git checkout tags/1.1.4
This will checkout out the tag in a 'detached HEAD' state. In this state, "you can look around, make experimental changes and commit them, and [discard those commits] without impacting any branches by performing another checkout".
To retain any changes made, move them to a new branch:
git checkout -b 1.1.4-jspooner
You can get back to the master branch by using:
git checkout master
Note, as was mentioned in the first revision of this answer, there is another way to checkout a tag:
git checkout 1.1.4
But as was mentioned in a comment, if you have a branch by that same name, this will result in git warning you that the refname is ambiguous and checking out the branch by default:
warning: refname 'test' is ambiguous.
Switched to branch '1.1.4'
The shorthand can be safely used if the repository does not share names between branches and tags.
Converting to unix timestamps makes doing date math easier in php:
$startTime = strtotime( '2010-05-01 12:00' );
$endTime = strtotime( '2010-05-10 12:00' );
// Loop between timestamps, 24 hours at a time
for ( $i = $startTime; $i <= $endTime; $i = $i + 86400 ) {
$thisDate = date( 'Y-m-d', $i ); // 2010-05-01, 2010-05-02, etc
}
When using PHP with a timezone having DST, make sure to add a time that is not 23:00, 00:00 or 1:00 to protect against days skipping or repeating.
1. Why does the getOne(id) method fail?
See this section in the docs. You overriding the already in place transaction might be causing the issue. However, without more info this one is difficult to answer.
2. When I should use the getOne(id) method?
Without digging into the internals of Spring Data JPA, the difference seems to be in the mechanism used to retrieve the entity.
If you look at the JavaDoc for getOne(ID)
under See Also:
See Also:
EntityManager.getReference(Class, Object)
it seems that this method just delegates to the JPA entity manager's implementation.
However, the docs for findOne(ID)
do not mention this.
The clue is also in the names of the repositories.
JpaRepository
is JPA specific and therefore can delegate calls to the entity manager if so needed.
CrudRepository
is agnostic of the persistence technology used. Look here. It's used as a marker interface for multiple persistence technologies like JPA, Neo4J etc.
So there's not really a 'difference' in the two methods for your use cases, it's just that findOne(ID)
is more generic than the more specialised getOne(ID)
. Which one you use is up to you and your project but I would personally stick to the findOne(ID)
as it makes your code less implementation specific and opens the doors to move to things like MongoDB etc. in the future without too much refactoring :)
Use eval()
instead of ast.literal_eval()
if the input is trusted (which it is in your case).
raw_data = userfile.read().split('\n')
for a in raw_data :
print a
btc_history.append(eval(a))
This works for me in Python 3.6.0
The official link no longer offers the original source code. The official link and casual google searches will land you with open jdk. Open jdk causes problems with android build unless the build script files are modified. The original package can be found here:
sudo add-apt-repository "deb http://ppa.launchpad.net/ferramroberto/java/ubuntu oneiric main"
This repo still has the sun-java6-source package. Credit: http://pulasthisupun.blogspot.com/2012/05/installing-sun-java-6-with-apt-get-in.html
I also facing this issue but i follow the following steps:-- 1) I add module(Library) to a particular folder name ThirdPartyLib
To resolve this issue i go settings.gradle than just add follwing:-
project(':').projectDir = new File('ThirdPartyLib/')
:- is module name...
Related, for mixing querysets from the same model, or for similar fields from a few models, Starting with Django 1.11 a QuerySet.union()
method is also available:
union()
union(*other_qs, all=False)
New in Django 1.11. Uses SQL’s UNION operator to combine the results of two or more QuerySets. For example:
>>> qs1.union(qs2, qs3)
The UNION operator selects only distinct values by default. To allow duplicate values, use the all=True argument.
union(), intersection(), and difference() return model instances of the type of the first QuerySet even if the arguments are QuerySets of other models. Passing different models works as long as the SELECT list is the same in all QuerySets (at least the types, the names don’t matter as long as the types in the same order).
In addition, only LIMIT, OFFSET, and ORDER BY (i.e. slicing and order_by()) are allowed on the resulting QuerySet. Further, databases place restrictions on what operations are allowed in the combined queries. For example, most databases don’t allow LIMIT or OFFSET in the combined queries.
%~d0
gives you the drive letter of argument 0 (the script name), %~p0
the path.
It's possible to use mousedown event of document instead of blur:
$(document).mousedown(function(){
if ($(event.target).attr("id") == "mySpan") {
// some process
}
});
Something like this:
.base {
width:100px;
}
div.child {
background-color:red;
color:blue;
}
.child {
background-color:yellow;
}
<div class="base child">
hello world
</div>
The background here will be red, as the css selector is more specific, as we've said it must belong to a div element too!
see it in action here: jsFiddle
I came to this question looking for a way to enable oracle session pool expiration based on total session lifetime instead of idle time. Another goal is to avoid force closes unexpected to application.
It seems it's possible by setting pool validation query to
select 1 from V$SESSION
where AUDSID = userenv('SESSIONID') and sysdate-LOGON_TIME < 30/24/60
This would close sessions aging over 30 minutes in predictable manner that doesn't affect application.
You can use a HTML table:
<table>
<tr>
<td>
<div id="bloc1">your content</div>
</td>
<td>
<div id="bloc2">your content</div>
</td>
</tr>
</table>
This compact method return 1 if exist 0 if not exist.
set @ret = 0;
SELECT 1 INTO @ret FROM information_schema.TABLES
WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'my_table';
SELECT @ret;
You can put in into a mysql function
DELIMITER $$
CREATE FUNCTION ExistTable (_tableName varchar(255))
RETURNS tinyint(4)
SQL SECURITY INVOKER
BEGIN
DECLARE _ret tinyint;
SET _ret = 0;
SELECT
1 INTO _ret
FROM information_schema.TABLES
WHERE TABLE_SCHEMA = DATABASE()
AND TABLE_NAME = _tablename LIMIT 1;
RETURN _ret;
END
$$
DELIMITER ;
and call it
Select ExistTable('my_table');
return 1 if exist 0 if not exist.
This helped me a lot and save me much time, its easy to use, and work well, i've even take the risque of change it and it still works.
Fairly good if you dont want to lost to much time on doing it :)
They are the same, however, the ternary operator can be used in places where it is difficult to use a if/else:
printf("Total: %d item%s", cnt, cnt != 1 ? "s" : "");
Doing that statement with an if/else, would generate a very different compiled code.
Update after 8 years...
Actually, I think this would be better:
printf(cnt == 1 ? "Total: %d item" : "Total: %d items", cnt);
(actually, I'm pretty sure you can replace the "%d" in the first string with "one")
FormData method .entries
and the for of
expression is not supported in IE11 and Safari.
Here is a simplier version to support Safari, Chrome, Firefox and Edge
function formDataToJSON(formElement) {
var formData = new FormData(formElement),
convertedJSON = {};
formData.forEach(function(value, key) {
convertedJSON[key] = value;
});
return convertedJSON;
}
Warning: this answer doesn't work in IE11.
FormData doesn't have a forEach
method in IE11.
I'm still searching for a final solution to support all major browsers.
function randomString(len) {
var p = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
return [...Array(len)].reduce(a=>a+p[~~(Math.random()*p.length)],'');
}
Summary:
- Create an array of the size we want (because there's no
range(len)
equivalent in javascript.- For each element in the array: pick a random character from
p
and add it to a string- Return the generated string.
Some explanation:
[...Array(len)]
Array(len) or new Array(len) creates an array with undefined pointer(s). One-liners are going to be harder to pull off. The Spread syntax conveniently defines the pointers (now they point to undefined objects!).
.reduce(
Reduce the array to, in this case, a single string. The reduce functionality is common in most languages and worth learning.
a=>a+...
We're using an arrow function.
a
is the accumulator. In this case it's the end-result string we're going to return when we're done (you know it's a string because the second argument to the reduce function, the initialValue is an empty string: ''
). So basically: convert each element in the array with p[~~(Math.random()*p.length)]
, append the result to the a
string and give me a
when you're done.
p[...]
p
is the string of characters we're selecting from. You can access chars in a string like an index (E.g., "abcdefg"[3]
gives us "d"
)
~~(Math.random()*p.length)
Math.random()
returns a floating point between [0, 1) Math.floor(Math.random()*max)
is the de facto standard for getting a random integer in javascript. ~
is the bitwise NOT operator in javascript.
~~
is a shorter, arguably sometimes faster, and definitely funner way to say Math.floor(
Here's some info
It is not possible to programmatically open the permission screen. Instead, we can open the app settings screen.
Code
Intent i = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS, Uri.parse("package:" + BuildConfig.APPLICATION_ID));
startActivity(i);
Sample Output
I also see that the page loading (performance) takes a long time on using h:commandLink than h:link. h:link is faster compared to h:commandLink
I ran into this as well, but in the case where I wanted to avoid the extra error messages while keeping the range provided. An option is also to subset the data prior to setting the range, so that the range can be kept however you like without triggering warnings.
library(ggplot2)
range(mtcars$hp)
#> [1] 52 335
# Setting limits with scale_y_continous (or ylim) and subsetting accordingly
## avoid warning messages about removing data
ggplot(data= subset(mtcars, hp<=300 & hp >= 100), aes(mpg, hp)) +
geom_point() +
scale_y_continuous(limits=c(100,300))
This is for future readers. I found that the simplest method for me was to use Visual Studio -> Tools -> External Tools. More details in this answer.
Easier to use and good debugging tools.
OLD (pre v4):
Writing in es6 and using react 0.14.6 / react-router 2.0.0-rc5. I use this command to lookup the query params in my components:
this.props.location.query
It creates a hash of all available query params in the url.
UPDATE (React Router v4+):
this.props.location.query in React Router 4 has been removed (currently using v4.1.1) more about the issue here: https://github.com/ReactTraining/react-router/issues/4410
Looks like they want you to use your own method to parse the query params, currently using this library to fill the gap: https://github.com/sindresorhus/query-string
Why do you use Restrictions.like(...
)?
You should use Restrictions.eq(...)
.
Note you can also use .le
, .lt
, .ge
, .gt
on date objects as comparison operators. LIKE
operator is not appropriate for this case since LIKE
is useful when you want to match results according to partial content of a column.
Please see http://www.sql-tutorial.net/SQL-LIKE.asp for the reference.
For example if you have a name column with some people's full name, you can do where name like 'robert %'
so that you will return all entries with name starting with 'robert '
(%
can replace any character).
In your case you know the full content of the date you're trying to match so you shouldn't use LIKE
but equality. I guess Hibernate doesn't give you any exception in this case, but anyway you will probably have the same problem with the Restrictions.eq(...)
.
Your date object you got with the code:
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-YYYY");
String myDate = "17-04-2011";
Date date = formatter.parse(myDate);
This date object is equals to the 17-04-2011 at 0h, 0 minutes, 0 seconds and 0 nanoseconds.
This means that your entries in database must have exactly that date. What i mean is that if your database entry has a date "17-April-2011 19:20:23.707000000", then it won't be retrieved because you just ask for that date: "17-April-2011 00:00:00.0000000000".
If you want to retrieve all entries of your database from a given day, you will have to use the following code:
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-YYYY");
String myDate = "17-04-2011";
// Create date 17-04-2011 - 00h00
Date minDate = formatter.parse(myDate);
// Create date 18-04-2011 - 00h00
// -> We take the 1st date and add it 1 day in millisecond thanks to a useful and not so known class
Date maxDate = new Date(minDate.getTime() + TimeUnit.DAYS.toMillis(1));
Conjunction and = Restrictions.conjunction();
// The order date must be >= 17-04-2011 - 00h00
and.add( Restrictions.ge("orderDate", minDate) );
// And the order date must be < 18-04-2011 - 00h00
and.add( Restrictions.lt("orderDate", maxDate) );
If you actually want this code to run at load, not at domready (ie you need the images to be loaded as well), then unfortunately the ready function doesn't do it for you. I generally just do something like this:
Include in document javascript (ie always called before onload fired):
var pageisloaded=0;
window.addEvent('load',function(){
pageisloaded=1;
});
Then your code:
if (pageisloaded) {
DoStuffFunction();
} else {
window.addEvent('load',DoStuffFunction);
}
(Or the equivalent in your framework of preference.) I use this code to do precaching of javascript and images for future pages. Since the stuff I'm getting isn't used for this page at all, I don't want it to take precedence over the speedy download of images.
There may be a better way, but I've yet to find it.
I believe you can do this:
gem "foo", path: "/path/to/foo"
You can use alternative "delimiters" like ";" or "|" but simplest might just be quoting which is supported by most (decent) CSV libraries and most decent spreadsheets.
An interesting collection library is https://github.com/mgesmundo/smart-collection. Allows you to watch arrays and add views to them as well. Not sure about the performance as I am testing it out myself. Will update this post soon.
The most powerful solution would be using array_filter
, which allows you to define your own filtering function.
But some might say it's a bit overkill, in your situation...
A simple foreach
loop to go trough the array and remove the item you don't want should be enough.
Something like this, in your case, should probably do the trick :
foreach ($items as $key => $value) {
if ($value == $id) {
unset($items[$key]);
// If you know you only have one line to remove, you can decomment the next line, to stop looping
//break;
}
}
I'm a bit late but here's my solution using g++ and only standard libraries. I've tried to minimise namespace pollution and remove any need to re-typing enum names.
The header file "my_enum.hpp" is:
#include <cstring>
namespace ENUM_HELPERS{
int replace_commas_and_spaces_with_null(char* string){
int i, N;
N = strlen(string);
for(i=0; i<N; ++i){
if( isspace(string[i]) || string[i] == ','){
string[i]='\0';
}
}
return(N);
}
int count_words_null_delim(char* string, int tot_N){
int i;
int j=0;
char last = '\0';
for(i=0;i<tot_N;++i){
if((last == '\0') && (string[i]!='\0')){
++j;
}
last = string[i];
}
return(j);
}
int get_null_word_offsets(char* string, int tot_N, int current_w){
int i;
int j=0;
char last = '\0';
for(i=0; i<tot_N; ++i){
if((last=='\0') && (string[i]!='\0')){
if(j == current_w){
return(i);
}
++j;
}
last = string[i];
}
return(tot_N); //null value for offset
}
int find_offsets(int* offsets, char* string, int tot_N, int N_words){
int i;
for(i=0; i<N_words; ++i){
offsets[i] = get_null_word_offsets(string, tot_N, i);
}
return(0);
}
}
#define MAKE_ENUM(NAME, ...) \
namespace NAME{ \
enum ENUM {__VA_ARGS__}; \
char name_holder[] = #__VA_ARGS__; \
int name_holder_N = \
ENUM_HELPERS::replace_commas_and_spaces_with_null(name_holder); \
int N = \
ENUM_HELPERS::count_words_null_delim( \
name_holder, name_holder_N); \
int offsets[] = {__VA_ARGS__}; \
int ZERO = \
ENUM_HELPERS::find_offsets( \
offsets, name_holder, name_holder_N, N); \
char* tostring(int i){ \
return(&name_holder[offsets[i]]); \
} \
}
Example of use:
#include <cstdio>
#include "my_enum.hpp"
MAKE_ENUM(Planets, MERCURY, VENUS, EARTH, MARS)
int main(int argc, char** argv){
Planets::ENUM a_planet = Planets::EARTH;
printf("%s\n", Planets::tostring(Planets::MERCURY));
printf("%s\n", Planets::tostring(a_planet));
}
This will output:
MERCURY
EARTH
You only have to define everything once, your namespace shouldn't be polluted, and all of the computation is only done once (the rest is just lookups). However, you don't get the type-safety of enum classes (they are still just short integers), you cannot assign values to the enums, you have to define enums somewhere you can define namespaces (e.g. globally).
I'm not sure how good the performance on this is, or if it's a good idea (I learnt C before C++ so my brain still works that way). If anyone knows why this is a bad idea feel free to point it out.
$request = [System.Net.WebRequest]::Create('http://stackoverflow.com/questions/20259251/powershell-script-to-check-the-status-of-a-url')
$response = $request.GetResponse()
$response.StatusCode
$response.Close()
Use commons-io IOUtils.toByteArray(URL):
String url = "http://localhost:8080/images/anImage.jpg";
byte[] fileContent = IOUtils.toByteArray(new URL(url));
Maven dependency:
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.6</version>
</dependency>
All This Work :)
Model
public partial class ClientMessage
{
public int IdCon { get; set; }
public string Name { get; set; }
public string Email { get; set; }
}
Controller
public class TestAjaxBeginFormController : Controller{
projectNameEntities db = new projectNameEntities();
public ActionResult Index(){
return View();
}
[HttpPost]
public ActionResult GetClientMessages(ClientMessage Vm) {
var model = db.ClientMessages.Where(x => x.Name.Contains(Vm.Name));
return PartialView("_PartialView", model);
}
}
View index.cshtml
@model projectName.Models.ClientMessage
@{
Layout = null;
}
<script src="~/Scripts/jquery-1.9.1.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.js"></script>
<script>
//\\\\\\\ JS retrun message SucccessPost or FailPost
function SuccessMessage() {
alert("Succcess Post");
}
function FailMessage() {
alert("Fail Post");
}
</script>
<h1>Page Index</h1>
@using (Ajax.BeginForm("GetClientMessages", "TestAjaxBeginForm", null , new AjaxOptions
{
HttpMethod = "POST",
OnSuccess = "SuccessMessage",
OnFailure = "FailMessage" ,
UpdateTargetId = "resultTarget"
}, new { id = "MyNewNameId" })) // set new Id name for Form
{
@Html.AntiForgeryToken()
@Html.EditorFor(x => x.Name)
<input type="submit" value="Search" />
}
<div id="resultTarget"> </div>
View _PartialView.cshtml
@model IEnumerable<projectName.Models.ClientMessage >
<table>
@foreach (var item in Model) {
<tr>
<td>@Html.DisplayFor(modelItem => item.IdCon)</td>
<td>@Html.DisplayFor(modelItem => item.Name)</td>
<td>@Html.DisplayFor(modelItem => item.Email)</td>
</tr>
}
</table>
This code is working fine for me,
var a = serializer.Deserialize<List<Entity>>(json);
Eclipse - specific Project change JDK Version -
If you want to change any jdk version of A specific project than you have to click ---> Project --> JRE System Library --> Properties ---> Inside Classpath Container (JRE System Library) change the Execution Environment to which ever version you want e.g. 1.7 or 1.8.
But an error occurred which says java.lang.NullPointerException.
Thats because, you never initialized your MainActivity. you should initialize your object before you call its methods.
MainActivity mActivity = new MainActivity();//make sure that you pass the appropriate arguments if you have an args constructor
mActivity.startChronometer();
Notice that this doesn't work in Windows.
The module pxssh does exactly what you want:
For example, to run 'ls -l' and to print the output, you need to do something like that :
from pexpect import pxssh
s = pxssh.pxssh()
if not s.login ('localhost', 'myusername', 'mypassword'):
print "SSH session failed on login."
print str(s)
else:
print "SSH session login successful"
s.sendline ('ls -l')
s.prompt() # match the prompt
print s.before # print everything before the prompt.
s.logout()
Some links :
Pxssh docs : http://dsnra.jpl.nasa.gov/software/Python/site-packages/Contrib/pxssh.html
Pexpect (pxssh is based on pexpect) : http://pexpect.readthedocs.io/en/stable/
I think that you can use
$file= public_path(). "/download/info.pdf";
$headers = array(
'Content-Type: ' . mime_content_type( $file ),
);
With this you be sure that is a pdf.
I use this...but have never done any metro app development, so I don't know of any restrictions on libraries available to you. (note, you'll need to mark your classes as with DataContract and DataMember attributes)
public static class JSONSerializer<TType> where TType : class
{
/// <summary>
/// Serializes an object to JSON
/// </summary>
public static string Serialize(TType instance)
{
var serializer = new DataContractJsonSerializer(typeof(TType));
using (var stream = new MemoryStream())
{
serializer.WriteObject(stream, instance);
return Encoding.Default.GetString(stream.ToArray());
}
}
/// <summary>
/// DeSerializes an object from JSON
/// </summary>
public static TType DeSerialize(string json)
{
using (var stream = new MemoryStream(Encoding.Default.GetBytes(json)))
{
var serializer = new DataContractJsonSerializer(typeof(TType));
return serializer.ReadObject(stream) as TType;
}
}
}
So, if you had a class like this...
[DataContract]
public class MusicInfo
{
[DataMember]
public string Name { get; set; }
[DataMember]
public string Artist { get; set; }
[DataMember]
public string Genre { get; set; }
[DataMember]
public string Album { get; set; }
[DataMember]
public string AlbumImage { get; set; }
[DataMember]
public string Link { get; set; }
}
Then you would use it like this...
var musicInfo = new MusicInfo
{
Name = "Prince Charming",
Artist = "Metallica",
Genre = "Rock and Metal",
Album = "Reload",
AlbumImage = "http://up203.siz.co.il/up2/u2zzzw4mjayz.png",
Link = "http://f2h.co.il/7779182246886"
};
// This will produce a JSON String
var serialized = JSONSerializer<MusicInfo>.Serialize(musicInfo);
// This will produce a copy of the instance you created earlier
var deserialized = JSONSerializer<MusicInfo>.DeSerialize(serialized);
What you could do is, create the "function" as another template file and then include that file passing the parameters to it.
Inside index.html
<h3> Latest Songs </h3>
{% include "song_player_list.html" with songs=latest_songs %}
Inside song_player_list.html
<ul>
{% for song in songs %}
<li>
<div id='songtile'>
<a href='/songs/download/{{song.id}}/'><i class='fa fa-cloud-download'></i> Download</a>
</div>
</li>
{% endfor %}
</ul>
function getMethods(obj)
{
var res = [];
for(var m in obj) {
if(typeof obj[m] == "function") {
res.push(m)
}
}
return res;
}
I saw some errors, which I've fixed below.
This is what I got as being erroneous:
if (login())
{?>
<h2>Welcome Administrator</h2>
<a href=\"upload.php\">Upload Files</a>
<br />
<a href=\"points.php\">Edit Points Tally</a>
<?php}
else
{
echo "Incorrect login details. Please login";
}
This is how I would have done it:
<html>
some code
<?php
function login()
{
if (empty ($_POST['username']))
{
return false;
}
if (empty ($_POST['password']))
{
return false;
}
$username = trim ($_POST['username']);
$password = trim ($_POST['password']);
$scrambled = md5 ($password . 'foo');
$link = mysqli_connect('localhost', 'root', 'password');
if (!$link)
{
$error = "Unable to connect to the database server";
include 'error.html.php';
exit ();
}
if (!mysqli_set_charset ($link, 'utf8'))
{
$error = "Unable to set database connection encoding";
include 'error.html.php';
exit ();
}
if (!mysqli_select_db ($link, 'foo'))
{
$error = "Unable to locate the foo database";
include 'error.html.php';
exit ();
}
$sql = "SELECT COUNT(*) FROM admin WHERE username = '$username' AND password = '$scrambled'";
$result = mysqli_query ($link, $sql);
if (!$result)
{
return false;
exit ();
}
$row = mysqli_fetch_array ($result);
if ($row[0] > 0)
{
return true;
}
else
{
return false;
}
}
if (login())
{
echo '<h2>Welcome Administrator</h2>
<a href=\"upload.php\">Upload Files</a>
<br />
<a href=\"points.php\">Edit Points Tally</a>';
}
else
{
echo "Incorrect login details. Please login";
}
?>
some more html code
</html>
I only want to mention a possible solution for unique private references in atomic parts of code without dependencies. You can use a static Hashmap with locks and a simple static method named atomic() that creates required references automatically using stack information (full class name and line number). Then you can use this method in synchronize statements without writing new lock object.
// Synchronization objects (locks)
private static HashMap<String, Object> locks = new HashMap<String, Object>();
// Simple method
private static Object atomic() {
StackTraceElement [] stack = Thread.currentThread().getStackTrace(); // get execution point
StackTraceElement exepoint = stack[2];
// creates unique key from class name and line number using execution point
String key = String.format("%s#%d", exepoint.getClassName(), exepoint.getLineNumber());
Object lock = locks.get(key); // use old or create new lock
if (lock == null) {
lock = new Object();
locks.put(key, lock);
}
return lock; // return reference to lock
}
// Synchronized code
void dosomething1() {
// start commands
synchronized (atomic()) {
// atomic commands 1
...
}
// other command
}
// Synchronized code
void dosomething2() {
// start commands
synchronized (atomic()) {
// atomic commands 2
...
}
// other command
}
The httpd dæmon on OpenBSD uses the following stylesheet for all of its error messages, which presumably covers all the Comic Sans variations on non-Windows systems:
http://openbsd.su/src/usr.sbin/httpd/server_http.c#server_abort_http
810 style = "body { background-color: white; color: black; font-family: "
811 "'Comic Sans MS', 'Chalkboard SE', 'Comic Neue', sans-serif; }\n"
812 "hr { border: 0; border-bottom: 1px dashed; }\n";
E.g., try this:
font-family: 'Comic Sans MS', 'Chalkboard SE', 'Comic Neue', sans-serif;
You can use names
directly in the read_csv
names : array-like, default None List of column names to use. If file contains no header row, then you should explicitly pass header=None
Cov = pd.read_csv("path/to/file.txt",
sep='\t',
names=["Sequence", "Start", "End", "Coverage"])
I'm using:
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
class Program
{
static void Main(string[] args)
{
const string DEFAULT_NAMESPACE = "http://www.something.org/schema";
var serializer = new XmlSerializer(typeof(Person), DEFAULT_NAMESPACE);
var namespaces = new XmlSerializerNamespaces();
namespaces.Add("", DEFAULT_NAMESPACE);
using (var stream = new MemoryStream())
{
var someone = new Person
{
FirstName = "Donald",
LastName = "Duck"
};
serializer.Serialize(stream, someone, namespaces);
stream.Position = 0;
using (var reader = new StreamReader(stream))
{
Console.WriteLine(reader.ReadToEnd());
}
}
}
}
To get the following XML:
<?xml version="1.0"?>
<Person xmlns="http://www.something.org/schema">
<FirstName>Donald</FirstName>
<LastName>Duck</LastName>
</Person>
If you don't want the namespace, just set DEFAULT_NAMESPACE to "".
I'm developing an app that needs to look similar in all devices with >= API14 when it comes to actionbar and statusbar customization. I've finally found a solution and since it took a bit of my time I'll share it to save some of yours. We start by using an appcompat-21 dependency.
Transparent Actionbar:
values/styles.xml:
<style name="AppTheme" parent="Theme.AppCompat.Light">
...
</style>
<style name="AppTheme.ActionBar.Transparent" parent="AppTheme">
<item name="android:windowContentOverlay">@null</item>
<item name="windowActionBarOverlay">true</item>
<item name="colorPrimary">@android:color/transparent</item>
</style>
<style name="AppTheme.ActionBar" parent="AppTheme">
<item name="windowActionBarOverlay">false</item>
<item name="colorPrimary">@color/default_yellow</item>
</style>
values-v21/styles.xml:
<style name="AppTheme" parent="Theme.AppCompat.Light">
...
</style>
<style name="AppTheme.ActionBar.Transparent" parent="AppTheme">
<item name="colorPrimary">@android:color/transparent</item>
</style>
<style name="AppTheme.ActionBar" parent="AppTheme">
<item name="colorPrimaryDark">@color/bg_colorPrimaryDark</item>
<item name="colorPrimary">@color/default_yellow</item>
</style>
Now you can use these themes in your AndroidManifest.xml
to specify which activities will have a transparent or colored ActionBar
:
<activity
android:name=".MyTransparentActionbarActivity"
android:theme="@style/AppTheme.ActionBar.Transparent"/>
<activity
android:name=".MyColoredActionbarActivity"
android:theme="@style/AppTheme.ActionBar"/>
Note: in API>=21 to get the Actionbar
transparent you need to get the Statusbar
transparent too, otherwise will not respect your colour styles and will stay light-grey.
Transparent Statusbar (only works with API>=19):
This one it's pretty simple just use the following code:
protected void setStatusBarTranslucent(boolean makeTranslucent) {
if (makeTranslucent) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
} else {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
}
}
But you'll notice a funky result:
This happens because when the Statusbar
is transparent the layout will use its height. To prevent this we just need to:
SOLUTION ONE:
Add this line android:fitsSystemWindows="true"
in your layout view container of whatever you want to be placed bellow the Actionbar:
...
<LinearLayout
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
</LinearLayout>
...
SOLUTION TWO:
Add a few lines to our previous method:
protected void setStatusBarTranslucent(boolean makeTranslucent) {
View v = findViewById(R.id.bellow_actionbar);
if (v != null) {
int paddingTop = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT ? MyScreenUtils.getStatusBarHeight(this) : 0;
TypedValue tv = new TypedValue();
getTheme().resolveAttribute(android.support.v7.appcompat.R.attr.actionBarSize, tv, true);
paddingTop += TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics());
v.setPadding(0, makeTranslucent ? paddingTop : 0, 0, 0);
}
if (makeTranslucent) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
} else {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
}
}
Where R.id.bellow_actionbar
will be the layout container view id of whatever we want to be placed bellow the Actionbar
:
...
<LinearLayout
android:id="@+id/bellow_actionbar"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
</LinearLayout>
...
So this is it, it think I'm not forgetting something.
In this example I didn't use a Toolbar
but I think it'll have the same result. This is how I customize my Actionbar
:
@Override
protected void onCreate(Bundle savedInstanceState) {
View vg = getActionBarView();
getWindow().requestFeature(vg != null ? Window.FEATURE_ACTION_BAR : Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(getContentView());
if (vg != null) {
getSupportActionBar().setCustomView(vg, new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
getSupportActionBar().setDisplayShowCustomEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(false);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayUseLogoEnabled(false);
}
setStatusBarTranslucent(true);
}
Note: this is an abstract class
that extends ActionBarActivity
Hope it helps!
You can use pageX
and pageY
to get the position of the mouse in the window. You can also use jQuery's offset
to get the position of an element.
So, it should be pageX - offset.left
for how far from the left of the image and pageY - offset.top
for how far from the top of the image.
Here is an example:
$(document).ready(function() {
$('img').click(function(e) {
var offset = $(this).offset();
alert(e.pageX - offset.left);
alert(e.pageY - offset.top);
});
});
I've made a live example here and here is the source.
To calculate how far from the bottom or right, you would have to use jQuery's width
and height
methods.
I'm not sure you have gotten past this yet, but I had to work on something very similar today and I got your fiddle working like you are asking, basically what I did was make another table row under it, and then used the accordion control. I tried using just collapse but could not get it working and saw an example somewhere on SO that used accordion.
Here's your updated fiddle: http://jsfiddle.net/whytheday/2Dj7Y/11/
Since I need to post code here is what each collapsible "section" should look like ->
<tr data-toggle="collapse" data-target="#demo1" class="accordion-toggle">
<td>1</td>
<td>05 May 2013</td>
<td>Credit Account</td>
<td class="text-success">$150.00</td>
<td class="text-error"></td>
<td class="text-success">$150.00</td>
</tr>
<tr>
<td colspan="6" class="hiddenRow">
<div class="accordion-body collapse" id="demo1">Demo1</div>
</td>
</tr>
Matplotlib uses a dictionary from its colors.py module.
To print the names use:
# python2:
import matplotlib
for name, hex in matplotlib.colors.cnames.iteritems():
print(name, hex)
# python3:
import matplotlib
for name, hex in matplotlib.colors.cnames.items():
print(name, hex)
This is the complete dictionary:
cnames = {
'aliceblue': '#F0F8FF',
'antiquewhite': '#FAEBD7',
'aqua': '#00FFFF',
'aquamarine': '#7FFFD4',
'azure': '#F0FFFF',
'beige': '#F5F5DC',
'bisque': '#FFE4C4',
'black': '#000000',
'blanchedalmond': '#FFEBCD',
'blue': '#0000FF',
'blueviolet': '#8A2BE2',
'brown': '#A52A2A',
'burlywood': '#DEB887',
'cadetblue': '#5F9EA0',
'chartreuse': '#7FFF00',
'chocolate': '#D2691E',
'coral': '#FF7F50',
'cornflowerblue': '#6495ED',
'cornsilk': '#FFF8DC',
'crimson': '#DC143C',
'cyan': '#00FFFF',
'darkblue': '#00008B',
'darkcyan': '#008B8B',
'darkgoldenrod': '#B8860B',
'darkgray': '#A9A9A9',
'darkgreen': '#006400',
'darkkhaki': '#BDB76B',
'darkmagenta': '#8B008B',
'darkolivegreen': '#556B2F',
'darkorange': '#FF8C00',
'darkorchid': '#9932CC',
'darkred': '#8B0000',
'darksalmon': '#E9967A',
'darkseagreen': '#8FBC8F',
'darkslateblue': '#483D8B',
'darkslategray': '#2F4F4F',
'darkturquoise': '#00CED1',
'darkviolet': '#9400D3',
'deeppink': '#FF1493',
'deepskyblue': '#00BFFF',
'dimgray': '#696969',
'dodgerblue': '#1E90FF',
'firebrick': '#B22222',
'floralwhite': '#FFFAF0',
'forestgreen': '#228B22',
'fuchsia': '#FF00FF',
'gainsboro': '#DCDCDC',
'ghostwhite': '#F8F8FF',
'gold': '#FFD700',
'goldenrod': '#DAA520',
'gray': '#808080',
'green': '#008000',
'greenyellow': '#ADFF2F',
'honeydew': '#F0FFF0',
'hotpink': '#FF69B4',
'indianred': '#CD5C5C',
'indigo': '#4B0082',
'ivory': '#FFFFF0',
'khaki': '#F0E68C',
'lavender': '#E6E6FA',
'lavenderblush': '#FFF0F5',
'lawngreen': '#7CFC00',
'lemonchiffon': '#FFFACD',
'lightblue': '#ADD8E6',
'lightcoral': '#F08080',
'lightcyan': '#E0FFFF',
'lightgoldenrodyellow': '#FAFAD2',
'lightgreen': '#90EE90',
'lightgray': '#D3D3D3',
'lightpink': '#FFB6C1',
'lightsalmon': '#FFA07A',
'lightseagreen': '#20B2AA',
'lightskyblue': '#87CEFA',
'lightslategray': '#778899',
'lightsteelblue': '#B0C4DE',
'lightyellow': '#FFFFE0',
'lime': '#00FF00',
'limegreen': '#32CD32',
'linen': '#FAF0E6',
'magenta': '#FF00FF',
'maroon': '#800000',
'mediumaquamarine': '#66CDAA',
'mediumblue': '#0000CD',
'mediumorchid': '#BA55D3',
'mediumpurple': '#9370DB',
'mediumseagreen': '#3CB371',
'mediumslateblue': '#7B68EE',
'mediumspringgreen': '#00FA9A',
'mediumturquoise': '#48D1CC',
'mediumvioletred': '#C71585',
'midnightblue': '#191970',
'mintcream': '#F5FFFA',
'mistyrose': '#FFE4E1',
'moccasin': '#FFE4B5',
'navajowhite': '#FFDEAD',
'navy': '#000080',
'oldlace': '#FDF5E6',
'olive': '#808000',
'olivedrab': '#6B8E23',
'orange': '#FFA500',
'orangered': '#FF4500',
'orchid': '#DA70D6',
'palegoldenrod': '#EEE8AA',
'palegreen': '#98FB98',
'paleturquoise': '#AFEEEE',
'palevioletred': '#DB7093',
'papayawhip': '#FFEFD5',
'peachpuff': '#FFDAB9',
'peru': '#CD853F',
'pink': '#FFC0CB',
'plum': '#DDA0DD',
'powderblue': '#B0E0E6',
'purple': '#800080',
'red': '#FF0000',
'rosybrown': '#BC8F8F',
'royalblue': '#4169E1',
'saddlebrown': '#8B4513',
'salmon': '#FA8072',
'sandybrown': '#FAA460',
'seagreen': '#2E8B57',
'seashell': '#FFF5EE',
'sienna': '#A0522D',
'silver': '#C0C0C0',
'skyblue': '#87CEEB',
'slateblue': '#6A5ACD',
'slategray': '#708090',
'snow': '#FFFAFA',
'springgreen': '#00FF7F',
'steelblue': '#4682B4',
'tan': '#D2B48C',
'teal': '#008080',
'thistle': '#D8BFD8',
'tomato': '#FF6347',
'turquoise': '#40E0D0',
'violet': '#EE82EE',
'wheat': '#F5DEB3',
'white': '#FFFFFF',
'whitesmoke': '#F5F5F5',
'yellow': '#FFFF00',
'yellowgreen': '#9ACD32'}
You could plot them like this:
import matplotlib.pyplot as plt
import matplotlib.patches as patches
import matplotlib.colors as colors
import math
fig = plt.figure()
ax = fig.add_subplot(111)
ratio = 1.0 / 3.0
count = math.ceil(math.sqrt(len(colors.cnames)))
x_count = count * ratio
y_count = count / ratio
x = 0
y = 0
w = 1 / x_count
h = 1 / y_count
for c in colors.cnames:
pos = (x / x_count, y / y_count)
ax.add_patch(patches.Rectangle(pos, w, h, color=c))
ax.annotate(c, xy=pos)
if y >= y_count-1:
x += 1
y = 0
else:
y += 1
plt.show()
Yes: call the toPandas
method on your dataframe and you'll get an actual pandas dataframe !
From the docs:
You can create multidimensional arrays by nesting pairs of square brackets, where the name of the base type of the elements is contained in the innermost pair of square brackets. For example, you can create a three-dimensional array of integers using three sets of square brackets:
var array3D: [[[Int]]] = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
When accessing the elements in a multidimensional array, the left-most subscript index refers to the element at that index in the outermost array. The next subscript index to the right refers to the element at that index in the array that’s nested one level in. And so on. This means that in the example above, array3D[0] refers to [[1, 2], [3, 4]], array3D[0][1] refers to [3, 4], and array3D[0][1][1] refers to the value 4.
Example code based on answer by TetraDev
Images on right:
* {_x000D_
outline: .4px dashed red;_x000D_
}_x000D_
_x000D_
.main {_x000D_
display: flex;_x000D_
flex-direction: row;_x000D_
align-items: center;_x000D_
}_x000D_
_x000D_
h1 {_x000D_
flex-basis: 100%;_x000D_
}_x000D_
_x000D_
img {_x000D_
margin: 0 5px;_x000D_
height: 30px;_x000D_
}
_x000D_
<div class="main">_x000D_
<h1>Secure Payment</h1>_x000D_
<img src="https://i.stack.imgur.com/i65gn.png">_x000D_
<img src="https://i.stack.imgur.com/i65gn.png">_x000D_
</div>
_x000D_
Images on left:
* {_x000D_
outline: .4px dashed red;_x000D_
}_x000D_
_x000D_
.main {_x000D_
display: flex;_x000D_
flex-direction: row;_x000D_
align-items: center;_x000D_
}_x000D_
_x000D_
h1 {_x000D_
flex-basis: 100%;_x000D_
text-align: right;_x000D_
}_x000D_
_x000D_
img {_x000D_
margin: 0 5px;_x000D_
height: 30px;_x000D_
}
_x000D_
<div class="main">_x000D_
<img src="https://i.stack.imgur.com/i65gn.png">_x000D_
<img src="https://i.stack.imgur.com/i65gn.png">_x000D_
<h1>Secure Payment</h1>_x000D_
</div>
_x000D_
Insert a column, for instance a new A column. Then use this function;
="k"&B1
and copy it down.
Then you can hide the new column A if you need too.
You can use Microsoft.Extensions.Configuration API with any .NET Core app, not only with ASP.NET Core app. Look into sample provided in the link, that shows how to read configs in the console app.
In most cases, the JSON source (read as .json
file) is the most suitable config source.
Note: don't be confused when someone says that config file should be
appsettings.json
. You can use any file name, that is suitable for you and file location may be different - there are no specific rules.
But, as the real world is complicated, there are a lot of different configuration providers:
and so on. You even could use/write a custom provider.
Actually, app.config
configuration file was an XML file. So you can read settings from it using XML configuration provider (source on github, nuget link). But keep in mind, it will be used only as a configuration source - any logic how your app behaves should be implemented by you. Configuration Provider will not change 'settings' and set policies for your apps, but only read data from the file.
Inspired by the internal callback above, i made a function to fire a callback at fractions of minutes. If timeout is set to intervals like 6 000, 15 000, 30 000, 60 000 it will continuously adapt the intervals in sync to the exact transition to the next minute of your system clock.
//Interval timer to trigger on even minute intervals
function setIntervalSynced(callback, intervalMs) {
//Calculate time to next modulus timer event
var betterInterval = function () {
var d = new Date();
var millis = (d.getMinutes() * 60 + d.getSeconds()) * 1000 + d.getMilliseconds();
return intervalMs - millis % intervalMs;
};
//Internal callback
var internalCallback = function () {
return function () {
setTimeout(internalCallback, betterInterval());
callback();
}
}();
//Initial call to start internal callback
setTimeout(internalCallback, betterInterval());
};
There is a vcvars32.bat in your Visual Studio installation directory. You can add call cmd.exe at the end of that batch program and launch it. From that shell you can use CMake or cmake-gui and cl.exe would be known to CMake.
You can make a link perform an Ajax post request when it's clicked.
In jQuery:
$('a').click(function(e) {
var $this = $(this);
e.preventDefault();
$.post('url', {'user': 'something', 'foo': 'bar'}, function() {
window.location = $this.attr('href');
});
});
You could also make the link submit a POST form with JavaScript:
<form action="url" method="post">
<input type="hidden" name="user" value="something" />
<a href="#">CLick</a>
</form>
<script>
$('a').click(function(e) {
e.preventDefault();
$(this).parents('form').submit();
});
</script>
You just need to get selenium package imported, that you can do from command prompt using the command
pip install selenium
When you have to use it in any IDE just import this package, no other documentation required to be imported
For Eg :
import selenium
print(selenium.__filepath__)
This is just a general command you may use in starting to check the filepath of selenium
I guess you can do this in 5 minute without any further IP/port forwarding, for presenting your local websites temporary.
All you need to do it, go to http://ngrok.com Download small tool extract and run that tool as administrator
Enter command
ngrok http 80
You will see it will connect to server and will create a temporary URL for you which you can share to your friend and let him browse localhost or any of its folder.
You can see detailed process here.
How do I access/share xampp or localhost website from another computer
The images c, d, e , and f in the following show colorspace conversion they also happen to be numpy arrays <type 'numpy.ndarray'>
:
import numpy, cv2
def show_pic(p):
''' use esc to see the results'''
print(type(p))
cv2.imshow('Color image', p)
while True:
k = cv2.waitKey(0) & 0xFF
if k == 27: break
return
cv2.destroyAllWindows()
b = numpy.zeros([200,200,3])
b[:,:,0] = numpy.ones([200,200])*255
b[:,:,1] = numpy.ones([200,200])*255
b[:,:,2] = numpy.ones([200,200])*0
cv2.imwrite('color_img.jpg', b)
c = cv2.imread('color_img.jpg', 1)
c = cv2.cvtColor(c, cv2.COLOR_BGR2RGB)
d = cv2.imread('color_img.jpg', 1)
d = cv2.cvtColor(c, cv2.COLOR_RGB2BGR)
e = cv2.imread('color_img.jpg', -1)
e = cv2.cvtColor(c, cv2.COLOR_BGR2RGB)
f = cv2.imread('color_img.jpg', -1)
f = cv2.cvtColor(c, cv2.COLOR_RGB2BGR)
pictures = [d, c, f, e]
for p in pictures:
show_pic(p)
# show the matrix
print(c)
print(c.shape)
See here for more info: http://docs.opencv.org/modules/imgproc/doc/miscellaneous_transformations.html#cvtcolor
OR you could:
img = numpy.zeros([200,200,3])
img[:,:,0] = numpy.ones([200,200])*255
img[:,:,1] = numpy.ones([200,200])*255
img[:,:,2] = numpy.ones([200,200])*0
r,g,b = cv2.split(img)
img_bgr = cv2.merge([b,g,r])
I know this is an old question, but the maintainer has a pyodbc
GitHub Repo.
I also found a very good example for installing FreeTDS and setting up the config files.
Following the instructions on the GitHub docs seems to me to always be the best option. As of February, 2018, for CentOs7 (they have all flavors at the link) they say:
# Add the RHEL 6 library for Centos-7 of MSSQL driver. Centos7 uses RHEL-6 Libraries.
sudo su
curl https://packages.microsoft.com/config/rhel/6/prod.repo > /etc/yum.repos.d/mssql-release.repo
exit
# Uninstall if already installed Unix ODBC driver
sudo yum remove unixODBC-utf16 unixODBC-utf16-devel #to avoid conflicts
# Install the msodbcsql unixODBC-utf16 unixODBC-utf16-devel driver
sudo ACCEPT_EULA=Y yum install msodbcsql
#optional: for bcp and sqlcmd
sudo ACCEPT_EULA=Y yum install mssql-tools
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bash_profile
echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
source ~/.bashrc
# optional: for unixODBC development headers
sudo yum install unixODBC-devel
# the Microsoft driver expects unixODBC to be here /usr/lib64/libodbc.so.1, so add soft links to the '.so.2' files
cd /usr/lib64
sudo ln -s libodbccr.so.2 libodbccr.so.1
sudo ln -s libodbcinst.so.2 libodbcinst.so.1
sudo ln -s libodbc.so.2 libodbc.so.1
# Set the path for unixODBC
export ODBCINI=/usr/local/etc/odbc.ini
export ODBCSYSINI=/usr/local/etc
source ~/.bashrc
# Prepare a temp file for defining the DSN to your database server
vi /home/user/odbcadd.txt
[MyMSSQLServer]
Driver = ODBC Driver 13 for SQL Server
Description = My MS SQL Server
Trace = No
Server = 10.100.1.10
# register the SQL Server database DSN information in /etc/odbc.ini
sudo odbcinst -i -s -f /home/user/odbcadd.txt -l
# check the DSN installation with:
odbcinst -j
cat /etc/odbc.ini
# should contain a section called [MyMSSQLServer]
# install the python driver for database connection
pip install pyodbc
Your diameter variable won't work because you're trying to store a String into a variable that will only accept a double. In order for it to work you will need to parse it
Ex:
diameter = Double.parseDouble(JOptionPane.showInputDialog("enter the diameter of a sphere.");
I have a simple script I use for this:
me@mycomputer:~$ cat /usr/local/bin/c
#!/bin/sh
echo "$*" | sed 's/x/\*/g' | bc -l
It changes x
to *
since *
is a special character in the shell. Use it as follows:
c 5x5
c 5-4.2 + 1
c '(5 + 5) * 30'
(you still have to use quotes if the expression contains any parentheses).The Math.Sign method is one way to go. It will return -1 for negative numbers, 1 for positive numbers, and 0 for values equal to zero (i.e. zero has no sign). Double and single precision variables will cause an exception (ArithmeticException) to be thrown if they equal NaN.
[ngStyle]="{'opacity': is_mail_sent ? '0.5' : '1' }"
int main()
{
char buff[1024] = {0};
FILE* cvt;
int status;
/* Launch converter and open a pipe through which the parent will write to it */
cvt = popen("converter", "w");
if (!cvt)
{
printf("couldn't open a pipe; quitting\n");
exit(1)
}
printf("enter Fahrenheit degrees: " );
fgets(buff, sizeof (buff), stdin); /*read user's input */
/* Send expression to converter for evaluation */
fprintf(cvt, "%s\n", buff);
fflush(cvt);
/* Close pipe to converter and wait for it to exit */
status=pclose(cvt);
/* Check the exit status of pclose() */
if (!WIFEXITED(status))
printf("error on closing the pipe\n");
return 0;
}
The important steps in this program are:
popen()
call which establishes the association between a child process and a pipe in the parent.fprintf()
call that uses the pipe as an ordinary file to write to the child process's stdin or read from its stdout.pclose()
call that closes the pipe and causes the child process to terminate.I have the same problem....
I change my project name and i have this problem...my solution was the checking project refences and use /
in my web.xml (instead of /*
)
the task is: get ?and? remove element from list
p.stream().collect( Collectors.collectingAndThen( Collector.of(
ArrayDeque::new,
(a, producer) -> {
if( producer.getPod().equals( pod ) )
a.addLast( producer );
},
(a1, a2) -> {
return( a1 );
},
rslt -> rslt.pollFirst()
),
(e) -> {
if( e != null )
p.remove( e ); // remove
return( e ); // get
} ) );
For readability, I restructured the query... starting with the apparent top-most level being Table1, which then ties to Table3, and then table3 ties to table2. Much easier to follow if you follow the chain of relationships.
Now, to answer your question. You are getting a large count as the result of a Cartesian product. For each record in Table1 that matches in Table3 you will have X * Y. Then, for each match between table3 and Table2 will have the same impact... Y * Z... So your result for just one possible ID in table 1 can have X * Y * Z records.
This is based on not knowing how the normalization or content is for your tables... if the key is a PRIMARY key or not..
Ex:
Table 1
DiffKey Other Val
1 X
1 Y
1 Z
Table 3
DiffKey Key Key2 Tbl3 Other
1 2 6 V
1 2 6 X
1 2 6 Y
1 2 6 Z
Table 2
Key Key2 Other Val
2 6 a
2 6 b
2 6 c
2 6 d
2 6 e
So, Table 1 joining to Table 3 will result (in this scenario) with 12 records (each in 1 joined with each in 3). Then, all that again times each matched record in table 2 (5 records)... total of 60 ( 3 tbl1 * 4 tbl3 * 5 tbl2 )count would be returned.
So, now, take that and expand based on your 1000's of records and you see how a messed-up structure could choke a cow (so-to-speak) and kill performance.
SELECT
COUNT(*)
FROM
Table1
INNER JOIN Table3
ON Table1.DifferentKey = Table3.DifferentKey
INNER JOIN Table2
ON Table3.Key =Table2.Key
AND Table3.Key2 = Table2.Key2
How do I check a variable if it's
null
orundefined
...
Is the variable null
:
if (a === null)
// or
if (a == null) // but see note below
...but note the latter will also be true if a
is undefined
.
Is it undefined
:
if (typeof a === "undefined")
// or
if (a === undefined)
// or
if (a == undefined) // but see note below
...but again, note that the last one is vague; it will also be true if a
is null
.
Now, despite the above, the usual way to check for those is to use the fact that they're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
// (and `""`, and `0`, and `NaN`, and [of course] `false`)
}
This is defined by ToBoolean in the spec.
...and what is the difference between the
null
andundefined
?
They're both values usually used to indicate the absence of something. undefined
is the more generic one, used as the default value of variables until they're assigned some other value, as the value of function arguments that weren't provided when the function was called, and as the value you get when you ask an object for a property it doesn't have. But it can also be explicitly used in all of those situations. (There's a difference between an object not having a property, and having the property with the value undefined
; there's a difference between calling a function with the value undefined
for an argument, and leaving that argument off entirely.)
null
is slightly more specific than undefined
: It's a blank object reference. JavaScript is loosely typed, of course, but not all of the things JavaScript interacts with are loosely typed. If an API like the DOM in browsers needs an object reference that's blank, we use null
, not undefined
. And similarly, the DOM's getElementById
operation returns an object reference — either a valid one (if it found the DOM element), or null
(if it didn't).
Interestingly (or not), they're their own types. Which is to say, null
is the only value in the Null type, and undefined
is the only value in the Undefined type.
What is the difference between "==" and "==="
The only difference between them is that ==
will do type coercion to try to get the values to match, and ===
won't. So for instance "1" == 1
is true, because "1"
coerces to 1
. But "1" === 1
is false, because the types don't match. ("1" !== 1
is true.) The first (real) step of ===
is "Are the types of the operands the same?" and if the answer is "no", the result is false
. If the types are the same, it does exactly what ==
does.
Type coercion uses quite complex rules and can have surprising results (for instance, "" == 0
is true).
More in the spec:
==
, also called "loose" equality)===
)I usually:
rake db:migrate VERSION=XXX
on all environments, to the version before the one I want to delete.rake db:migrate
again.If your application is already on production or staging, it's safer to just write another migration that destroys your table or columns.
Another great reference for migrations is: http://guides.rubyonrails.org/migrations.html
Try this. I set the blue box to float right, gave left and right a fixed height, and added a white border on the right of the left div. Also added rounded corners to more match your example (These won't work in ie 8 or less). I also took out the position: relative. You don't need it. Block level elements are set to position relative by default.
See it here: http://jsfiddle.net/ZSgLJ/
#left {
float: left;
width: 44%;
margin: 0;
padding: 0;
border-right: 1px solid white;
height:400px;
}
#right {
position: relative;
float: right;
width: 49%;
margin: 0;
padding: 0;
height:400px;
}
#blue_box {
background-color:blue;
border-radius: 10px;
-moz-border-radius:10px;
-webkit-border-radius: 10px;
width: 45%;
min-width: 400px;
max-width: 600px;
padding: 2%;
float: right;
}
Jupyter has its own PATH variable, JUPYTER_PATH.
Adding this line to the .bashrc
file worked for me:
export JUPYTER_PATH=<directory_for_your_module>:$JUPYTER_PATH
try out this....
using javascript
?document.getElementById('sel').value = 'car';??????????
using jQuery
$('#sel').val('car');
Swift 4::
This will shows loader while loading the image. You can use NSCache which store image temporarily
let imageCache = NSCache<NSString, UIImage>()
extension UIImageView {
func loadImageUsingCache(withUrl urlString : String) {
let url = URL(string: urlString)
if url == nil {return}
self.image = nil
// check cached image
if let cachedImage = imageCache.object(forKey: urlString as NSString) {
self.image = cachedImage
return
}
let activityIndicator: UIActivityIndicatorView = UIActivityIndicatorView.init(activityIndicatorStyle: .gray)
addSubview(activityIndicator)
activityIndicator.startAnimating()
activityIndicator.center = self.center
// if not, download image from url
URLSession.shared.dataTask(with: url!, completionHandler: { (data, response, error) in
if error != nil {
print(error!)
return
}
DispatchQueue.main.async {
if let image = UIImage(data: data!) {
imageCache.setObject(image, forKey: urlString as NSString)
self.image = image
activityIndicator.removeFromSuperview()
}
}
}).resume()
}
}
Usage:-
truckImageView.loadImageUsingCache(withUrl: currentTruck.logoString)
Selenium2Library has get_location():
import Selenium2Library
s = Selenium2Library.Selenium2Library()
url = s.get_location()
This is a cross-browser solution:
var w = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
var h = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
If anyone like me is searching to read only a specific line, example only line 18 here is the code:
filename = "C:\log.log"
Set fso = CreateObject("Scripting.FileSystemObject")
Set f = fso.OpenTextFile(filename)
For i = 1 to 17
f.ReadLine
Next
strLine = f.ReadLine
Wscript.Echo strLine
f.Close
For those who are using Eclipse IDE.
After installing the full MySQL together with mysql client and mysql server and any mysql dev libraries,
You will need to tell Eclipse IDE about the following
Here is how you go about it.
To Add mysql.h
1. GCC C Compiler -> Includes -> Include paths(-l) then click + and add path to your mysql.h In my case it was /usr/include/mysql
To add mysqlclient library and search path to where mysqlclient library see steps 3 and 4.
2. GCC C Linker -> Libraries -> Libraries(-l) then click + and add mysqlcient
3. GCC C Linker -> Libraries -> Library search path (-L) then click + and add search path to mysqlcient. In my case it was /usr/lib64/mysql because I am using a 64 bit Linux OS and a 64 bit MySQL Database.
Otherwise, if you are using a 32 bit Linux OS, you may find that it is found at /usr/lib/mysql
Reading and writing binary files is pretty much the same as any other file, the only difference is how you open it:
unsigned char buffer[10];
FILE *ptr;
ptr = fopen("test.bin","rb"); // r for read, b for binary
fread(buffer,sizeof(buffer),1,ptr); // read 10 bytes to our buffer
You said you can read it, but it's not outputting correctly... keep in mind that when you "output" this data, you're not reading ASCII, so it's not like printing a string to the screen:
for(int i = 0; i<10; i++)
printf("%u ", buffer[i]); // prints a series of bytes
Writing to a file is pretty much the same, with the exception that you're using fwrite()
instead of fread()
:
FILE *write_ptr;
write_ptr = fopen("test.bin","wb"); // w for write, b for binary
fwrite(buffer,sizeof(buffer),1,write_ptr); // write 10 bytes from our buffer
Since we're talking Linux.. there's an easy way to do a sanity check. Install hexdump
on your system (if it's not already on there) and dump your file:
mike@mike-VirtualBox:~/C$ hexdump test.bin
0000000 457f 464c 0102 0001 0000 0000 0000 0000
0000010 0001 003e 0001 0000 0000 0000 0000 0000
...
Now compare that to your output:
mike@mike-VirtualBox:~/C$ ./a.out
127 69 76 70 2 1 1 0 0 0
hmm, maybe change the printf
to a %x
to make this a little clearer:
mike@mike-VirtualBox:~/C$ ./a.out
7F 45 4C 46 2 1 1 0 0 0
Hey, look! The data matches up now*. Awesome, we must be reading the binary file correctly!
*Note the bytes are just swapped on the output but that data is correct, you can adjust for this sort of thing
There is a faster way to fix this:
list = [1, 1.0, 1.41, 1.73, 2, 2, 2.0, 2.24, 3, 3, 4, 4, 4, 5, 6, 6, 8, 8, 9, 10]
list2=[]
for value in list:
try:
list2.index(value)
except:
list2.append(value)
list.clear()
for value in list2:
list.append(value)
list2.clear()
print(list)
print(list2)
Firstly, write an unzip utility using vbscript to trigger the native unzip functionality in Windows. Then pipe out the script from within your batch file and then call it. Then it's as good as stand alone. I've done it in the past for numerous tasks. This way it does not require need of third party applications, just the one batch file that does everything.
I put an example on my blog on how to unzip a file using a batch file:
' j_unzip.vbs
'
' UnZip a file script
'
' By Justin Godden 2010
'
' It's a mess, I know!!!
'
' Dim ArgObj, var1, var2
Set ArgObj = WScript.Arguments
If (Wscript.Arguments.Count > 0) Then
var1 = ArgObj(0)
Else
var1 = ""
End if
If var1 = "" then
strFileZIP = "example.zip"
Else
strFileZIP = var1
End if
'The location of the zip file.
REM Set WshShell = CreateObject("Wscript.Shell")
REM CurDir = WshShell.ExpandEnvironmentStrings("%%cd%%")
Dim sCurPath
sCurPath = CreateObject("Scripting.FileSystemObject").GetAbsolutePathName(".")
strZipFile = sCurPath & "\" & strFileZIP
'The folder the contents should be extracted to.
outFolder = sCurPath & "\"
WScript.Echo ( "Extracting file " & strFileZIP)
Set objShell = CreateObject( "Shell.Application" )
Set objSource = objShell.NameSpace(strZipFile).Items()
Set objTarget = objShell.NameSpace(outFolder)
intOptions = 256
objTarget.CopyHere objSource, intOptions
WScript.Echo ( "Extracted." )
' This bit is for testing purposes
REM Dim MyVar
REM MyVar = MsgBox ( strZipFile, 65, "MsgBox Example"
Use it like this:
cscript //B j_unzip.vbs zip_file_name_goes_here.zip
On Github, <p>
and <br/>
solves the problem.
<p>
I want to this to appear in a new line. Introduces extra line above
or
<br/>
another way
RabbitMQ has 2 things under queue
Delete - will delete the queue
Purge - This will empty the queue (meaning removes messages from the queue but queue still exists)
Facebook does not allow you to change the "What's on your mind?" text box, unless of course you're developing an application for use on Facebook.
The issue was with the dmp file itself. I had to re-export the file and the command works fine. Thank you @Justin Cave
Non C++11 solution: With the <ctime>
header, you could use strftime
. Make sure your buffer is large enough, you wouldn't want to overrun it and wreak havoc later.
#include <iostream>
#include <ctime>
int main ()
{
time_t rawtime;
struct tm * timeinfo;
char buffer[80];
time (&rawtime);
timeinfo = localtime(&rawtime);
strftime(buffer,sizeof(buffer),"%d-%m-%Y %H:%M:%S",timeinfo);
std::string str(buffer);
std::cout << str;
return 0;
}
To be perfectly precise, Darwin is enough. No need to import the whole Cocoa framework.
import Darwin
Of course, if you need elements from Cocoa or Foundation or other higher level frameworks, you can import them instead
If you are in Java EE prospective in Eclipse and trying to start the Tomcat Server in Eclipse in debug mode, then you will get such errors. You must switch to debug prospective in Eclipse. I have solved my problem like this.
I think that the best solution would be to use Regular expressions. It's cleanest and probably the most effective. Regular Expressions are supported in all commonly used DB engines.
In MySql there is RLIKE
operator so your query would be something like:
SELECT * FROM buckets WHERE bucketname RLIKE 'Stylus|2100'
I'm not very strong in regexp so I hope the expression is ok.
Edit
The RegExp should rather be:
SELECT * FROM buckets WHERE bucketname RLIKE '(?=.*Stylus)(?=.*2100)'
More on MySql regexp support:
http://dev.mysql.com/doc/refman/5.1/en/regexp.html#operator_regexp
Beej's famous network programming guide gives a nice explanation:
In some documentation, you'll see mention of a mystical "PF_INET". This is a weird etherial beast that is rarely seen in nature, but I might as well clarify it a bit here. Once a long time ago, it was thought that maybe a address family (what the "AF" in "AF_INET" stands for) might support several protocols that were referenced by their protocol family (what the "PF" in "PF_INET" stands for).
That didn't happen. Oh well. So the correct thing to do is to use AF_INET in your struct sockaddr_in and PF_INET in your call to socket(). But practically speaking, you can use AF_INET everywhere. And, since that's what W. Richard Stevens does in his book, that's what I'll do here.
You're returning a tuple
. Index it.
obj=list_benefits()
print obj[0] + " is a benefit of functions!"
print obj[1] + " is a benefit of functions!"
print obj[2] + " is a benefit of functions!"
var tooLong = document.getElementById("longText").value;
if (tooLong.length() > 18){
$('#longText').css('text-overflow', 'ellipsis');
}
Seems like a bad way to do it (creating two correlated lists) but I'm assuming you have your reasons.
I'd parse the JSON string (which has a typo in your example, it's missing a comma between the two objects) into a strongly-typed object and then use a couple of LINQ queries to get the two lists.
void Main()
{
string json = "{\"People\":[{\"FirstName\":\"Hans\",\"LastName\":\"Olo\"},{\"FirstName\":\"Jimmy\",\"LastName\":\"Crackedcorn\"}]}";
var result = JsonConvert.DeserializeObject<RootObject>(json);
var firstNames = result.People.Select (p => p.FirstName).ToList();
var lastNames = result.People.Select (p => p.LastName).ToList();
}
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
public class RootObject
{
public List<Person> People { get; set; }
}
If you can use jQuery "Chamika Sandamal" answer is the correct way to go. In the case you can't use jQuery you can do something like this:
function selectedRadio() {
var radio = document.getElementsByName('mailCopy');
alert(radio[0].value);
}
Notes:
Here is an example of input radios:
<input type="radio" name="mailCopy" value="1" />1<br />
<input type="radio" name="mailCopy" value="2" />2<br />
I had same problem but disk space was okay (only 40% full). Problem were inodes, I had too many small files and my inodes were full.
You can check inode status with df -i
I have a really stupid use case for why I got this error. Originally I was printing my data > file.txt
Then I changed my mind, and decided to use open("file.txt", "w") instead. But when I called python, I left > file.txt .....
You can simply typecast, and it will do the conversion for you, e.g.
var with = (double?) jToken[key] ?? 100;
It will automatically return null
if said key is not present in the object, so there's no need to test for it.
You can use more simpler and lighter solution:
document.head.querySelector('meta[name="description"]').content = _desc
This work for me to remove old records:
delete from table where id in
(select min(e.id)
from (select * from table) e
group by column1, column2
having count(*) > 1
);
You can replace min(e.id) to max(e.id) to remove newest records.
It's easier to help you if you say what's wrong as well, or what fails when you run it.
But from a quick glance you've confused a few things.
The following doesn't work because of a couple of issues.
if (Directory("C:\\csharp\\error report1.xls") = "")
What you are trying to do is creating a new Directory object that should point to a file and then check if there was any errors.
What you are actually doing is trying to call a function named Directory() and then assign a string to the result. This won't work since 1/ you don't have a function named Directory(string str) and you cannot assign to the result from a function (you can only assign a value to a variable).
What you should do (for this line at least) is the following
FileInfo fi = new FileInfo("C:\\csharp\\error report1.xls");
if(!fi.Exists)
{
// Create the xl file here
}
else
{
// Open file here
}
As to why the Excel code doesn't work, you have to check the documentation for the Excel library which google should be able to provide for you.
The only way to get the iOS dictation is to sign up yourself through Nuance: http://dragonmobile.nuancemobiledeveloper.com/ - it's expensive, because it's the best. Presumably, Apple's contract prevents them from exposing an API.
The built in iOS accessibility features allow immobilized users to access dictation (and other keyboard buttons) through tools like VoiceOver and Assistive Touch. It may not be worth reinventing this if your users might be familiar with these tools.
Interfaces can not be directly instantiated, you should instantiate classes that implements such Interfaces.
Try this:
NameValuePair[] params = new BasicNameValuePair[] {
new BasicNameValuePair("param1", param1),
new BasicNameValuePair("param2", param2),
};
You can convert .csv file to UTF-8 with BOM via Notepad++:
Encoding
?Convert to UTF-8
.File
?Save
.Worked in Microsoft Excel 2013 (15.0.5093.1000) MSO (15.0.5101.1000) 64-bit from Microsoft Office Professional Plus 2013 on Windows 8.1 with locale for non-Unicode programs set to "German (Germany)".
Random AirCoded example of testing "set equality" in jQuery:
$.fn.isEqual = function($otherSet) {
if (this === $otherSet) return true;
if (this.length != $otherSet.length) return false;
var ret = true;
this.each(function(idx) {
if (this !== $otherSet[idx]) {
ret = false; return false;
}
});
return ret;
};
var a=$('#start > div:last-child');
var b=$('#start > div.live')[0];
console.log($(b).isEqual(a));
In my case, I deleted the Previous Project & created a new project with different name, when i was building the Project it shows me the same error.
I just edited the Project Name in csproj file of the Project & it Worked...!
I've seen it implemented through reflection as well. Basically there was a method that would iterate through the members of an object and appropriately copy them to the new object. When it reached reference types or collections I think it did a recursive call on itself. Reflection is expensive, but it worked pretty well.
You probably did some history rewriting? Your local branch diverged from the one on the server. Run this command to get a better understanding of what happened:
gitk HEAD @{u}
I would strongly recommend you try to understand where this error is coming from. To fix it, simply run:
git push -f
The -f
makes this a “forced push” and overwrites the branch on the server. That is very dangerous when you are working in team. But
since you are on your own and sure that your local state is correct
this should be fine. You risk losing commit history if that is not the case.