Do you even need them to be input elements in the first place? You can use Javascript to dynamically create divs or paragraphs or list items or whatever that contain the information you want to present.
But if the interactive element is important and it's a pain in the butt to place those elements outside the <form>
block, it ought to be possible to remove those elements from the form when the page gets submitted.
If the function is not defined when using that function in html, such as onclick = ‘function () ', it means function is in a callback, in my case is 'DOMContentLoaded'.
Update 2016: seems to be working again.
Update August 2014: No longer works as of recent Chrome versions.
Yeah, the new state of affairs sucks. Fortunately it's not so hard as the other answers imply.
chrome://extensions
.user.js
file into that page.Voila. You can also drag files from the downloads footer bar to the extensions tab.
Chrome will automatically create a manifest.json
file in the extensions directory that Brock documented.
<3 Freedom.
I have solved this issue as follows:
removed from chrome extension and install ext again. It will work ISA
I came to the same problem.
Fixed this by run the rbenv global
command with sudo
.
I think it was something permission problem.
update:
I finally found the solution.
There was one same file "version" on my mac, which is under /usr/local/Cellar/rbenv/0.3.0/
.
I think it was created by mistake occasionally. you should remove it.
If you wanted to do it that way...
$line = 0;
while (($buffer = fgets($fh)) !== FALSE) {
if ($line == 1) {
// This is the second line.
break;
}
$line++;
}
Alternatively, open it with file()
and subscript the line with [1]
.
Simple way to start, try jQuery
$("#links").load("/Main_Page #jq-p-Getting-Started li");
More at jQuery Docs
Another way to do screen scraping in a much more structured way is to use YQL or Yahoo Query Language. It will return the scraped data structured as JSON or xml.
e.g.
Let's scrape stackoverflow.com
select * from html where url="http://stackoverflow.com"
will give you a JSON array (I chose that option) like this
"results": {
"body": {
"noscript": [
{
"div": {
"id": "noscript-padding"
}
},
{
"div": {
"id": "noscript-warning",
"p": "Stack Overflow works best with JavaScript enabled"
}
}
],
"div": [
{
"id": "notify-container"
},
{
"div": [
{
"id": "header",
"div": [
{
"id": "hlogo",
"a": {
"href": "/",
"img": {
"alt": "logo homepage",
"height": "70",
"src": "http://i.stackoverflow.com/Content/Img/stackoverflow-logo-250.png",
"width": "250"
}
……..
The beauty of this is that you can do projections and where clauses which ultimately gets you the scraped data structured and only the data what you need (much less bandwidth over the wire ultimately)
e.g
select * from html where url="http://stackoverflow.com" and
xpath='//div/h3/a'
will get you
"results": {
"a": [
{
"href": "/questions/414690/iphone-simulator-port-for-windows-closed",
"title": "Duplicate: Is any Windows simulator available to test iPhone application? as a hobbyist who cannot afford a mac, i set up a toolchain kit locally on cygwin to compile objecti … ",
"content": "iphone\n simulator port for windows [closed]"
},
{
"href": "/questions/680867/how-to-redirect-the-web-page-in-flex-application",
"title": "I have a button control ....i need another web page to be redirected while clicking that button .... how to do that ? Thanks ",
"content": "How\n to redirect the web page in flex application ?"
},
…..
Now to get only the questions we do a
select title from html where url="http://stackoverflow.com" and
xpath='//div/h3/a'
Note the title in projections
"results": {
"a": [
{
"title": "I don't want the function to be entered simultaneously by multiple threads, neither do I want it to be entered again when it has not returned yet. Is there any approach to achieve … "
},
{
"title": "I'm certain I'm doing something really obviously stupid, but I've been trying to figure it out for a few hours now and nothing is jumping out at me. I'm using a ModelForm so I can … "
},
{
"title": "when i am going through my project in IE only its showing errors A runtime error has occurred Do you wish to debug? Line 768 Error:Expected')' Is this is regarding any script er … "
},
{
"title": "I have a java batch file consisting of 4 execution steps written for analyzing any Java application. In one of the steps, I'm adding few libs in classpath that are needed for my co … "
},
{
……
Once you write your query it generates a url for you
in our case.
So ultimately you end up doing something like this
var titleList = $.getJSON(theAboveUrl);
and play with it.
Beautiful, isn’t it?
Create-react-app Version 2+ answer
For recent (> v2) versions of create-react-app (and possible older as well), add the following line to your package.json, then rebuild.
"homepage": "./"
You should now see the build/index.html will have relative links ./static/...
instead of links to the server root: /static/...
.
Instead of using the placeholder text, you'll want to set the actual text
property of the field to MM/YYYY, set the delegate of the text field and listen for this method:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { // update the text of the label }
Inside that method, you can figure out what the user has typed as they type, which will allow you to update the label accordingly.
After some searching, the most reasonable answer is the following:
MVC is already implemented in Android as:
Button
derived from android.view.View
.(This by the way implies no application domain logic in the activity.)
The most reasonable thing for a small developer is to follow this pattern and not to try to do what Google decided not to do.
PS Note that Activity is sometimes restarted, so it's no place for model data (the easiest way to cause a restart is to omit android:configChanges="keyboardHidden|orientation"
from the XML and turn your device).
EDIT
We may be talking about MVC, but it will be so to say FMVC, Framework--Model--View--Controller. The Framework (the Android OS) imposes its idea of component life cycle and related events, and in practice the Controller (Activity
/Service
/BroadcastReceiver
) is first of all responsible for coping with these Framework-imposed events (such as onCreate()). Should user input be processed separately? Even if it should, you cannot separate it, user input events also come from Android.
Anyway, the less code that is not Android-specific you put into your Activity
/Service
/BroadcastReceiver
, the better.
This is a problem with your web server sending out an HTTP header that does not match the one you define. For instructions on how to make the server send the correct headers, see this page.
Otherwise, you can also use PHP to modify the headers, but this has to be done before outputting any text using this code:
header('Content-Type: text/html; charset=utf-8');
More information on how to send out headers using PHP can be found in the documentation for the header function.
We were having similar issues with Font Awesome on a static "cookie-less" domain when reading fonts from the "cookie domain" (www.domain.tld) and this post was our hero. See here: How can I fix the 'Missing Cross-Origin Resource Sharing (CORS) Response Header' webfont issue?
For the copy/paste-r types (and to give some props) I pieced this together from all the contributions and added it to the top of the .htaccess file of the site root:
<IfModule mod_headers.c>
<IfModule mod_rewrite.c>
SetEnvIf Origin "http(s)?://(.+\.)?(othersite\.com|mywebsite\.com)(:\d{1,5})?$" CORS=$0
Header set Access-Control-Allow-Origin "%{CORS}e" env=CORS
Header merge Vary "Origin"
</IfModule>
</IfModule>
Super Secure, Super Elegant. Love it: You don't have to open up your servers bandwidth to resource thieves / hot-link-er types.
Props to:@Noyo @DaveRandom @pratap-koritala
(I tried to leave this as a comment to the accepted answer, but I can't do that yet)
A very simple but inefficient solution without any external library is:
public static String unescapeHtml3( String str ) {
try {
HTMLDocument doc = new HTMLDocument();
new HTMLEditorKit().read( new StringReader( "<html><body>" + str ), doc, 0 );
return doc.getText( 1, doc.getLength() );
} catch( Exception ex ) {
return str;
}
}
This should be use only if you have only small count of string to decode.
I actually used to check window.parent and it worked for me, but lately window is a cyclic object and always has a parent key, iframe or no iframe.
As the comments suggest hard comparing with window.parent works. Not sure if this will work if iframe is exactly the same webpage as parent.
window === window.parent;
I was searching for something like this, because I've got to check which of all my selects are disabled.
So I use this:
let select= $("select");
for (let i = 0; i < select.length; i++) {
const element = select[i];
if(element.disabled == true ){
console.log(element)
}
}
You cannot append to an existing xlsx file with xlsxwriter
.
There is a module called openpyxl which allows you to read and write to preexisting excel file, but I am sure that the method to do so involves reading from the excel file, storing all the information somehow (database or arrays), and then rewriting when you call workbook.close()
which will then write all of the information to your xlsx file.
Similarly, you can use a method of your own to "append" to xlsx documents. I recently had to append to a xlsx file because I had a lot of different tests in which I had GPS data coming in to a main worksheet, and then I had to append a new sheet each time a test started as well. The only way I could get around this without openpyxl was to read the excel file with xlrd and then run through the rows and columns...
i.e.
cells = []
for row in range(sheet.nrows):
cells.append([])
for col in range(sheet.ncols):
cells[row].append(workbook.cell(row, col).value)
You don't need arrays, though. For example, this works perfectly fine:
import xlrd
import xlsxwriter
from os.path import expanduser
home = expanduser("~")
# this writes test data to an excel file
wb = xlsxwriter.Workbook("{}/Desktop/test.xlsx".format(home))
sheet1 = wb.add_worksheet()
for row in range(10):
for col in range(20):
sheet1.write(row, col, "test ({}, {})".format(row, col))
wb.close()
# open the file for reading
wbRD = xlrd.open_workbook("{}/Desktop/test.xlsx".format(home))
sheets = wbRD.sheets()
# open the same file for writing (just don't write yet)
wb = xlsxwriter.Workbook("{}/Desktop/test.xlsx".format(home))
# run through the sheets and store sheets in workbook
# this still doesn't write to the file yet
for sheet in sheets: # write data from old file
newSheet = wb.add_worksheet(sheet.name)
for row in range(sheet.nrows):
for col in range(sheet.ncols):
newSheet.write(row, col, sheet.cell(row, col).value)
for row in range(10, 20): # write NEW data
for col in range(20):
newSheet.write(row, col, "test ({}, {})".format(row, col))
wb.close() # THIS writes
However, I found that it was easier to read the data and store into a 2-dimensional array because I was manipulating the data and was receiving input over and over again and did not want to write to the excel file until it the test was over (which you could just as easily do with xlsxwriter since that is probably what they do anyway until you call .close()
).
Use this code. This works like a champ.
Process process = new Process();
process.StartInfo.UseShellExecute = true;
process.StartInfo.FileName = outputPdfFile;
process.Start();
The following solution worked for me. It involves copy pasting the .dll and .pdb files properly from project A to B: https://stackoverflow.com/a/16546777/5351410
According to this: http://www.vistax64.com/vista-installation-setup/33219-regsvr32-error-0x80004005.html
Run it in a elevated command prompt.
You can either send a GET with a body or send a POST and give up RESTish religiosity (it's not so bad, 5 years ago there was only one member of that faith -- his comments linked above).
Neither are great decisions, but sending a GET body may prevent problems for some clients -- and some servers.
Doing a POST might have obstacles with some RESTish frameworks.
Julian Reschke suggested above using a non-standard HTTP header like "SEARCH" which could be an elegant solution, except that it's even less likely to be supported.
It might be most productive to list clients that can and cannot do each of the above.
Clients that cannot send a GET with body (that I know of):
Clients that can send a GET with body:
Servers & libraries that can retrieve a body from GET:
Servers (and proxies) that strip a body from GET:
The following code should be useful to you.
String email;
check.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
checkEmail(email);
if (checkMail) {
System.out.println("Valid mail Id");
}
}
});
}
}
public static boolean checkEmail(String email) {
Pattern EMAIL_ADDRESS_PATTERN = Pattern
.compile("[a-zA-Z0-9+._%-+]{1,256}" + "@"
+ "[a-zA-Z0-9][a-zA-Z0-9-]{0,64}" + "(" + "."
+ "[a-zA-Z0-9][a-zA-Z0-9-]{0,25}" + ")+");
return EMAIL_ADDRESS_PATTERN.matcher(email).matches();
}
You can either do 1 of the following:
Change:
SET @UserId
= 0 to SELECT @UserId
This will return the value in the same way your 2nd part of the IF statement is.
Or, seeing as @UserId is set as an Output, change:
SELECT SCOPE_IDENTITY()
to SET @UserId = SCOPE_IDENTITY()
It depends on how you want to access the data afterwards. If you want the value to be in your result set, use SELECT
. If you want to access the new value of the @UserId parameter afterwards, then use SET @UserId
Seeing as you're accepting the 2nd condition as correct, the query you could write (without having to change anything outside of this query) is:
@EmailAddress varchar(200),
@NickName varchar(100),
@Password varchar(150),
@Sex varchar(50),
@Age int,
@EmailUpdates int,
@UserId int OUTPUT
IF
(SELECT COUNT(UserId) FROM RegUsers WHERE EmailAddress = @EmailAddress) > 0
BEGIN
SELECT 0
END
ELSE
BEGIN
INSERT INTO RegUsers (EmailAddress,NickName,PassWord,Sex,Age,EmailUpdates) VALUES (@EmailAddress,@NickName,@Password,@Sex,@Age,@EmailUpdates)
SELECT SCOPE_IDENTITY()
END
END
According to the android docs view alpha is a value between 0 and 1. So to set it use something like this:
View v;
v.setAlpha(.5f);
The specific method used to set environment variables will vary by CI service, build approach, platform and tools you're using.
If you're using Buddybuild for CI to build an app and manage environment variables, and you need access to config from JS, create a env.js.example
with keys (with empty string values) for check-in to source control, and use Buddybuild to produce an env.js
file at build time in the post-clone
step, hiding the file contents from the build logs, like so:
#!/usr/bin/env bash
ENVJS_FILE="$BUDDYBUILD_WORKSPACE/env.js"
# Echo what's happening to the build logs
echo Creating environment config file
# Create `env.js` file in project root
touch $ENVJS_FILE
# Write environment config to file, hiding from build logs
tee $ENVJS_FILE > /dev/null <<EOF
module.exports = {
AUTH0_CLIENT_ID: '$AUTH0_CLIENT_ID',
AUTH0_DOMAIN: '$AUTH0_DOMAIN'
}
EOF
Tip: Don't forget to add env.js
to .gitignore
so config and secrets aren't checked into source control accidentally during development.
You can then manage how the file gets written using the Buddybuild variables like BUDDYBUILD_VARIANTS
, for instance, to gain greater control over how your config is produced at build time.
The simplest and easiest way is to execute your particular script with -NoExit
param.
1.Open run box by pressing:
Win + R
2.Then type into input prompt:
PowerShell -NoExit "C:\folder\script.ps1"
and execute.
+----------------------------------------------------------------------------------------------+
¦ ¦ foreach ¦ map ¦
¦----------------+-------------------------------------+---------------------------------------¦
¦ Functionality ¦ Performs given operation on each ¦ Performs given "transformation" on ¦
¦ ¦ element of the array ¦ "copy" of each element ¦
¦————————————————+—————————————————————————————————————+———————————————————————————————————————¦
¦ Return value ¦ Returns undefined ¦ Returns new array with tranformed ¦
¦ ¦ ¦ elements leaving back original array ¦
¦ ¦ ¦ unchanged ¦
¦————————————————+—————————————————————————————————————+———————————————————————————————————————¦
¦ Preferrable ¦ Performing non—transformation like ¦ Obtaining array containing output of ¦
¦ usage scenario ¦ processing on each element. ¦ some processing done on each element ¦
¦ and example ¦ ¦ of the array. ¦
¦ ¦ For example, saving all elements in ¦ ¦
¦ ¦ the database ¦ For example, obtaining array of ¦
¦ ¦ ¦ lengths of each string in the ¦
¦ ¦ ¦ array ¦
+----------------------------------------------------------------------------------------------+
I had this problem as well, until I came up with this method.
public static int[] indexesOf(String s, String flag) {
int flagLen = flag.length();
String current = s;
int[] res = new int[s.length()];
int count = 0;
int base = 0;
while(current.contains(flag)) {
int index = current.indexOf(flag);
res[count] = index + base;
base += index + flagLen;
current = current.substring(current.indexOf(flag) + flagLen, current.length());
++ count;
}
return Arrays.copyOf(res, count);
}
This method can be used to find indexes of any flag of any length in a string, for example:
public class Main {
public static void main(String[] args) {
int[] indexes = indexesOf("Hello, yellow jello", "ll");
// Prints [2, 9, 16]
System.out.println(Arrays.toString(indexes));
}
public static int[] indexesOf(String s, String flag) {
int flagLen = flag.length();
String current = s;
int[] res = new int[s.length()];
int count = 0;
int base = 0;
while(current.contains(flag)) {
int index = current.indexOf(flag);
res[count] = index + base;
base += index + flagLen;
current = current.substring(current.indexOf(flag) + flagLen, current.length());
++ count;
}
return Arrays.copyOf(res, count);
}
}
Lets start with some data:
from pyspark.mllib.linalg import SparseVector
from pyspark.sql import Row
df1 = sqlContext.createDataFrame([
Row(a=107831, f=SparseVector(
5, {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0})),
Row(a=125231, f=SparseVector(
5, {0: 0.0, 1: 0.0, 2: 0.0047, 3: 0.0, 4: 0.0043})),
])
df2 = sqlContext.createDataFrame([
Row(a=107831, f=SparseVector(
5, {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0})),
Row(a=107831, f=SparseVector(
5, {0: 0.0, 1: 0.0, 2: 0.0, 3: 0.0, 4: 0.0})),
])
There are a few ways you can approach this problem. First of all you can unambiguously reference child table columns using parent columns:
df1.join(df2, df1['a'] == df2['a']).select(df1['f']).show(2)
## +--------------------+
## | f|
## +--------------------+
## |(5,[0,1,2,3,4],[0...|
## |(5,[0,1,2,3,4],[0...|
## +--------------------+
You can also use table aliases:
from pyspark.sql.functions import col
df1_a = df1.alias("df1_a")
df2_a = df2.alias("df2_a")
df1_a.join(df2_a, col('df1_a.a') == col('df2_a.a')).select('df1_a.f').show(2)
## +--------------------+
## | f|
## +--------------------+
## |(5,[0,1,2,3,4],[0...|
## |(5,[0,1,2,3,4],[0...|
## +--------------------+
Finally you can programmatically rename columns:
df1_r = df1.select(*(col(x).alias(x + '_df1') for x in df1.columns))
df2_r = df2.select(*(col(x).alias(x + '_df2') for x in df2.columns))
df1_r.join(df2_r, col('a_df1') == col('a_df2')).select(col('f_df1')).show(2)
## +--------------------+
## | f_df1|
## +--------------------+
## |(5,[0,1,2,3,4],[0...|
## |(5,[0,1,2,3,4],[0...|
## +--------------------+
You hide Bootstrap modals with:
$('#modal').modal('hide');
Saying $().hide()
makes the matched element invisible, but as far as the modal-related code is concerned, it's still there. See the Methods section in the Modals documentation.
The sexiest version by far is with format strings.
from datetime import datetime
print(f'{datetime.today():%Y-%m-%d}')
it might be due to running of xampp or wampp server stop all services running and try to open mysql command line
the wmic bios get serialnumber
command call the Win32_BIOS
wmi class and get the value of the SerialNumber
property, which retrieves the serial number of the BIOS Chip of your system.
Whitespace is preserved by the browser. Text will wrap when necessary, and on line breaks
.pre-wrap {
white-space: pre-wrap;
word-break: break-word;
}
DEMO
td {_x000D_
word-break: break-word;_x000D_
white-space: pre-wrap;_x000D_
-moz-white-space: pre-wrap; _x000D_
}_x000D_
_x000D_
table {_x000D_
width: 100px;_x000D_
border: 1px solid black;_x000D_
display: block;_x000D_
}
_x000D_
<table>_x000D_
<tr><th>list</th>_x000D_
<td>_x000D_
1.longtextlongtextlongtextlongtextlongtextlongtextlongtextlongtextlongtextlongtextlongtextlongtext_x000D_
2.breaklinebreaklinebreaklinebreaklinebreaklinebreaklinebreaklinebreaklinebreaklinebreaklinebreakline_x000D_
</td>_x000D_
</tr>_x000D_
</table>
_x000D_
sleep(3)
is in unistd.h
, not stdlib.h
. Type man 3 sleep
on your command line to confirm for your machine, but I presume you're on a Mac since you're learning Objective-C, and on a Mac, you need unistd.h
.
I had a similar problem when tweaking with a Repeater after converting it from a DataList.
Problem was that I accidentally united 2 attributes when deleting an unneeded one.
<asp:Repeater runat="server" ID="ClientsRP"DataSourceID="ClientsDS">
.
.
.
</asp:Repeater>
And this prevented the generation of the repeater in the design file.
something like so might work:
<script type="text/javascript">
$(document).ready(function(){
var $input = $("<input name='myField' type='text'>");
$('#section2').append($input);
});
</script>
<form>
<div id="section1"><!-- some controls--></div>
<div id="section2"><!-- for dynamic controls--></div>
</form>
Alen Saqe's latest JSFiddle didn't toggle for me on Firefox, so I thought I would provide a simple html/javascript workaround that will function nicely within forms (regarding submission) until the day that the datalist tag is accepted by all browsers/devices. For more details and see it in action, go to: http://jsfiddle.net/6nq7w/4/ Note: Do not allow any spaces between toggling siblings!
<!DOCTYPE html>
<html>
<script>
function toggleField(hideObj,showObj){
hideObj.disabled=true;
hideObj.style.display='none';
showObj.disabled=false;
showObj.style.display='inline';
showObj.focus();
}
</script>
<body>
<form name="BrowserSurvey" action="#">
Browser: <select name="browser"
onchange="if(this.options[this.selectedIndex].value=='customOption'){
toggleField(this,this.nextSibling);
this.selectedIndex='0';
}">
<option></option>
<option value="customOption">[type a custom value]</option>
<option>Chrome</option>
<option>Firefox</option>
<option>Internet Explorer</option>
<option>Opera</option>
<option>Safari</option>
</select><input name="browser" style="display:none;" disabled="disabled"
onblur="if(this.value==''){toggleField(this,this.previousSibling);}">
<input type="submit" value="Submit">
</form>
</body>
</html>
Quick note: if you're also using coord_flip()
to flip the x and the y axis, you won't be able to set range limits using coord_cartesian()
because those two functions are exclusive (see here).
Fortunately, this is an easy fix; set your limits within coord_flip()
like so:
p + coord_flip(ylim = c(3,5), xlim = c(100, 400))
This just alters the visible range (i.e. doesn't remove data points).
The equals() method on your List implementation should do elementwise comparison, so
assertEquals(argumentComponents, returnedComponents);
is a lot easier.
To do it without using a JavaScript library such as jQuery, you'd do it like this:
var span = document.getElementById("myspan"),
text = document.createTextNode(''+intValue);
span.innerHTML = ''; // clear existing
span.appendChild(text);
If you do want to use jQuery, it's just this:
$("#myspan").text(''+intValue);
Although I take the risk of not being popular I say they are not useful nowadays.
I think they were well intended and useful in the past when for example DELETE told the server to delete the resource found at supplied URL and PUT (with its sibling PATCH) told the server to do update in an idempotent manner.
Things evolved and URLs became virtual (see url rewriting for example) making resources lose their initial meaning of real folder/subforder/file and so, CRUD action verbs covered by HTTP protocol methods (GET, POST, PUT/PATCH, DELETE) lost track.
Let's take an example:
On the left side is not written the HTTP method, essentially it doesn't matter (POST and GET are enough) and on the right side appropriate HTTP methods are used.
Right side looks elegant, clean and professional. Imagine now you have to maintain a code that's been using the elegant API and you have to search where deletion call is done. You'll search for "api/entity" and among results you'll have to see which one is doing DELETE. Or even worse, you have a junior programmer which by mistake switched PUT with DELETE and as URL is the same shit happened.
In my opinion putting the action verb in the URL has advantages over using the appropriate HTTP method for that action even if it's not so elegant. If you want to see where delete call is made you just have to search for "api/entity/delete" and you'll find it straight away.
Building an API without the whole HTTP array of methods makes it easier to be consumed and maintained afterwards
If you want the executable:
System.Reflection.Assembly.GetEntryAssembly().Location
If you want the assembly that's consuming your library (which could be the same assembly as above, if your code is called directly from a class within your executable):
System.Reflection.Assembly.GetCallingAssembly().Location
If you'd like just the filename and not the path, use:
Path.GetFileName(System.Reflection.Assembly.GetEntryAssembly().Location)
If you're just using toString()
for debugging a DTO, you can generate human readable output automatically with something like the following:
import com.fasterxml.jackson.databind.ObjectMapper;
...
public String toString() {
try { return new ObjectMapper().writeValueAsString(this); }
catch (Exception e) { return "{ObjectMapper failed}"; }
}
However, this isn't appropriate for production deployments if the DTO may contain PII (which shouldn't be captured in logs).
Depends on implementation but I would use
(?i)G[a-b].
VARIATIONS:
(?i) case-insensitive mode ON
(?-i) case-insensitive mode OFF
Modern regex flavors allow you to apply modifiers to only part of the regular expression. If you insert the modifier (?im) in the middle of the regex then the modifier only applies to the part of the regex to the right of the modifier. With these flavors, you can turn off modes by preceding them with a minus sign (?-i).
Description is from the page: https://www.regular-expressions.info/modifiers.html
My Intellij version is 13.4.1
Intellij IDEA->Perference->Code Style(Project Setting)
Casting to an int implicitly drops any decimal. No need to call Math.floor() (assuming positive numbers)
Simply typecast with (int), e.g.:
System.out.println((int)(99.9999)); // Prints 99
This being said, it does have a different behavior from Math.floor
which rounds towards negative infinity (@Chris Wong)
Use org.apache.commons.lang3.StringUtils
String emptyString = new String();
result = StringUtils.defaultIfEmpty(emptyString, "default");
System.out.println(result);
String nullString = null;
result = StringUtils.defaultIfEmpty(nullString, "default");
System.out.println(result);
Both of the above options will print:
default
default
$("#dropDownId").val('2');
var SelectedValue= $("#dropDownId option:selected").text();
$(".ParentClass .select-value").html(SelectedValue);
<p class="inline-large-label button-height ParentClass" >
<label for="large-label-2" class="label">Country <span style="color: Red;">*</span><small></small></label>
<asp:DropDownList runat="server" ID="dropDownId " CssClass="select" Width="200px">
</asp:DropDownList>
</p>
Just adding some more operations on data. Suppose we have a dataframe df
, we can do several operations to get desired outputs
ID cost tax label
1 216590 1600 test
2 523213 1800 test
3 250 1500 experiment
(df['label'].value_counts().to_frame().reset_index()).sort_values('label', ascending=False)
will give sorted
output of labels as a dataframe
index label
0 test 2
1 experiment 1
The full TypeScript code
public getClassName() {
var funcNameRegex = /function (.{1,})\(/;
var results = (funcNameRegex).exec(this["constructor"].toString());
return (results && results.length > 1) ? results[1] : "";
}
It's worth mentioning that
$('a').attr('href'); // gets the actual value
$('a').prop('href'); // gets the full URL always
As you see from the other post you have linked, there isn't a way for the app to know if the user has left a review or not. And for good reason.
Think about it, if an app could tell if the user has left a review or not, the developer could restrict certain features that would only be unlocked if the user leaves a 5/5 rating. This would lead the other users of Google Play to not trust the reviews and would undermine the rating system.
The alternative solutions I have seen is that the app reminds the user to submit a rating whenever the app is opened a specific number of times, or a set interval. For example, on every 10th time the app is opened, ask the user to leave a rating and provide a "already done" and "remind me later" button. Keep showing this message if the user has chosen to remind him/her later. Some other apps developers show this message with an increasing interval (like, 5, 10, 15nth time the app is opened), because if a user hasn't left a review on the, for example, 100th time the app was opened, it's probably likely s/he won't be leaving one.
This solution isn't perfect, but I think it's the best you have for now. It does lead you to trust the user, but realize that the alternative would mean a potentially worse experience for everyone in the app market.
You could also position the hidden div off the screen with a negative margin rather than using display:none, much like a the text indent image replacement technique.
eg.
position:absolute;
left: -2000px;
top: 0;
This way the height() is still available.
The simplest solution is to use option -B or --databases.Then CREATE database command appears in the output file. For example:
mysqldump -uuser -ppassword -d -B --events --routines --triggers database_example > database_example.sql
Here is a dumpfile's header:
-- MySQL dump 10.13 Distrib 5.5.36-34.2, for Linux (x86_64)
--
-- Host: localhost Database: database_example
-- ------------------------------------------------------
-- Server version 5.5.36-34.2-log
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
--
-- Current Database: `database_example`
--
CREATE DATABASE /*!32312 IF NOT EXISTS*/ `database_example` /*!40100 DEFAULT CHARACTER SET utf8 */;
typedef
is used to alias types; in this case you're aliasing FunctionFunc
to void(*)()
.
Indeed the syntax does look odd, have a look at this:
typedef void (*FunctionFunc) ( );
// ^ ^ ^
// return type type name arguments
No, this simply tells the compiler that the FunctionFunc
type will be a function pointer, it doesn't define one, like this:
FunctionFunc x;
void doSomething() { printf("Hello there\n"); }
x = &doSomething;
x(); //prints "Hello there"
[Edit] There's another solution not mentioned yet, and it seems to outperform the others given so far in most cases.
Use string.translate to replace all valid characters in the string, and see if we have any invalid ones left over. This is pretty fast as it uses the underlying C function to do the work, with very little python bytecode involved.
Obviously performance isn't everything - going for the most readable solutions is probably the best approach when not in a performance critical codepath, but just to see how the solutions stack up, here's a performance comparison of all the methods proposed so far. check_trans is the one using the string.translate method.
Test code:
import string, re, timeit
pat = re.compile('[\w-]*$')
pat_inv = re.compile ('[^\w-]')
allowed_chars=string.ascii_letters + string.digits + '_-'
allowed_set = set(allowed_chars)
trans_table = string.maketrans('','')
def check_set_diff(s):
return not set(s) - allowed_set
def check_set_all(s):
return all(x in allowed_set for x in s)
def check_set_subset(s):
return set(s).issubset(allowed_set)
def check_re_match(s):
return pat.match(s)
def check_re_inverse(s): # Search for non-matching character.
return not pat_inv.search(s)
def check_trans(s):
return not s.translate(trans_table,allowed_chars)
test_long_almost_valid='a_very_long_string_that_is_mostly_valid_except_for_last_char'*99 + '!'
test_long_valid='a_very_long_string_that_is_completely_valid_' * 99
test_short_valid='short_valid_string'
test_short_invalid='/$%$%&'
test_long_invalid='/$%$%&' * 99
test_empty=''
def main():
funcs = sorted(f for f in globals() if f.startswith('check_'))
tests = sorted(f for f in globals() if f.startswith('test_'))
for test in tests:
print "Test %-15s (length = %d):" % (test, len(globals()[test]))
for func in funcs:
print " %-20s : %.3f" % (func,
timeit.Timer('%s(%s)' % (func, test), 'from __main__ import pat,allowed_set,%s' % ','.join(funcs+tests)).timeit(10000))
print
if __name__=='__main__': main()
The results on my system are:
Test test_empty (length = 0):
check_re_inverse : 0.042
check_re_match : 0.030
check_set_all : 0.027
check_set_diff : 0.029
check_set_subset : 0.029
check_trans : 0.014
Test test_long_almost_valid (length = 5941):
check_re_inverse : 2.690
check_re_match : 3.037
check_set_all : 18.860
check_set_diff : 2.905
check_set_subset : 2.903
check_trans : 0.182
Test test_long_invalid (length = 594):
check_re_inverse : 0.017
check_re_match : 0.015
check_set_all : 0.044
check_set_diff : 0.311
check_set_subset : 0.308
check_trans : 0.034
Test test_long_valid (length = 4356):
check_re_inverse : 1.890
check_re_match : 1.010
check_set_all : 14.411
check_set_diff : 2.101
check_set_subset : 2.333
check_trans : 0.140
Test test_short_invalid (length = 6):
check_re_inverse : 0.017
check_re_match : 0.019
check_set_all : 0.044
check_set_diff : 0.032
check_set_subset : 0.037
check_trans : 0.015
Test test_short_valid (length = 18):
check_re_inverse : 0.125
check_re_match : 0.066
check_set_all : 0.104
check_set_diff : 0.051
check_set_subset : 0.046
check_trans : 0.017
The translate approach seems best in most cases, dramatically so with long valid strings, but is beaten out by regexes in test_long_invalid (Presumably because the regex can bail out immediately, but translate always has to scan the whole string). The set approaches are usually worst, beating regexes only for the empty string case.
Using all(x in allowed_set for x in s) performs well if it bails out early, but can be bad if it has to iterate through every character. isSubSet and set difference are comparable, and are consistently proportional to the length of the string regardless of the data.
There's a similar difference between the regex methods matching all valid characters and searching for invalid characters. Matching performs a little better when checking for a long, but fully valid string, but worse for invalid characters near the end of the string.
A TextinputLayout
is not a view, but a Layout
, as very nicely described by Dimitrios Tsigouris in his blog post here. Therefore, you don't need a Style
, which is for Views
only, but use a Theme
. Following the blog post, I ended up with the following solution:
Start in your styles.xml
with
<style name="TextInputLayoutAppearance" parent="Widget.Design.TextInputLayout">
<!-- reference our hint & error styles -->
<item name="android:textColor">@color/your_colour_here</item>
<item name="android:textColorHint">@color/your_colour_here</item>
<item name="colorControlNormal">@color/your_colour_here</item>
<item name="colorControlActivated">@color/your_colour_here</item>
<item name="colorControlHighlight">@color/your_colour_here</item>
</style>
And in your layout add
<com.google.android.material.textfield.TextInputLayout
android:theme="@style/TextInputLayoutAppearance"
...
There is a way to make it automatically load up javascript before the rest of the code runs.
Go into Views\Shared_Layout.html and add the following
<head>
<*@ Omitted code*@>
<script src="~/Scripts/jquery-1.10.2.min.js" type="text/javascript"></script>
</head>
It may or may not be appropriate for your situation but you can use CSS selectors for a lot of these type of situations.
If, for example you wanted of the 3rd and 6th instances of .cssText to have a different width you could write:
.cssText:nth-of-type(3), .cssText:nth-of-type(6) {width:100px !important;}
Or:
.container:nth-of-type(3).cssText, .container:nth-of-type(6).cssText {width:100px !important;}
To build ontop of @tomloprod's answer. By the odd chance that you are using x-editable, and have a select2(v4) field and have multiple items you need to pre-select. You can use the following piece of code:
$("#select2field").on("shown", function(e, editable){
$(["test1", "test2", "test3", "test4"]).each(function(k, v){
// Create a DOM Option and pre-select by default~
var newOption = new Option(v.text, v.id, true, true);
// Append it to the select
$(editable.input.$input).append(newOption).trigger('change');
});
});
and here it is in action:
var data = [_x000D_
{_x000D_
id: 0,_x000D_
text: 'enhancement'_x000D_
},_x000D_
{_x000D_
id: 1,_x000D_
text: 'bug'_x000D_
},_x000D_
{_x000D_
id: 2,_x000D_
text: 'duplicate'_x000D_
},_x000D_
{_x000D_
id: 3,_x000D_
text: 'invalid'_x000D_
},_x000D_
{_x000D_
id: 4,_x000D_
text: 'wontfix'_x000D_
}_x000D_
];_x000D_
_x000D_
$("#select2field").editable({_x000D_
type: "select2",_x000D_
url: './',_x000D_
name: 'select2field',_x000D_
savenochange: true,_x000D_
send: 'always',_x000D_
mode: 'inline',_x000D_
source: data,_x000D_
value: "bug, wontfix",_x000D_
tpl: '<select style="width: 201px;">',_x000D_
select2: {_x000D_
width: '201px',_x000D_
tags: true,_x000D_
tokenSeparators: [',', ' '],_x000D_
multiple: true,_x000D_
data:data_x000D_
},_x000D_
success: function(response, newValue) {_x000D_
console.log("success")_x000D_
},_x000D_
error: function(response, newValue) {_x000D_
if (response.status === 500) {_x000D_
return 'Service unavailable. Please try later.';_x000D_
} else {_x000D_
return response.responseJSON;_x000D_
}_x000D_
}_x000D_
});_x000D_
_x000D_
var preselect= [_x000D_
{_x000D_
id: 1,_x000D_
text: 'bug'_x000D_
},_x000D_
{_x000D_
id: 4,_x000D_
text: 'wontfix'_x000D_
}_x000D_
];_x000D_
_x000D_
$("#select2field").on("shown", function(e, editable){_x000D_
$(preselect).each(function(k, v){_x000D_
// Create a DOM Option and pre-select by default~_x000D_
var newOption = new Option(v.text, v.id, true, true);_x000D_
// Append it to the select_x000D_
$(editable.input.$input).append(newOption).trigger('change');_x000D_
});_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.1/js/select2.min.js"></script>_x000D_
<link href="//cdnjs.cloudflare.com/ajax/libs/select2/4.0.1/css/select2.min.css" rel="stylesheet" />_x000D_
_x000D_
<link href="//cdnjs.cloudflare.com/ajax/libs/x-editable/1.5.0/bootstrap3-editable/css/bootstrap-editable.css" rel="stylesheet"/>_x000D_
<script src="//cdnjs.cloudflare.com/ajax/libs/x-editable/1.5.0/bootstrap3-editable/js/bootstrap-editable.min.js"></script>_x000D_
_x000D_
<a id="select2field">bug, wontfix</a>
_x000D_
I guess that this would work even if you aren't using x-editable. I hope that htis could help someone.
<form method="post" action="">
<table>
<tr><td><input name="Submit" type="submit" value="refresh"></td></tr>
</table>
</form>
<?php
if(isset($_POST['Submit']))
{
header("Location: http://yourpagehere.com");
}
?>
I recommend http://stacktrace.sourceforge.net/ project. It support Windows, Mac OS and also Linux
I had the same problem so that the dumb API I decided as follows changing the import line
import com.google.android.gms.maps.model.LatLng;
I found the following code the jQuery UI dialog function for open.
c([]).add(d.find(".ui-dialog-content :tabbable:first")).add(d.find(".ui-dialog-buttonpane :tabbable:first")).add(d).filter(":first").focus();
You can either workaround the jQuery behaviour or change the behaviour.
tabindex -1 works as a workaround.
For proper error handling:
#!/bin/bash
set -Ee
trap "echo error" EXIT
test -e ${FILENAME} || exit
while read -r line
do
echo ${line}
done < ${FILENAME}
You could just set the width to auto. Then the width of the div will equal 0 if it has no content.
width:auto;
Your update syntax is incorrect. Please check Update Syntax for the correct syntax.
$sql = "UPDATE `access_users` set `contact_first_name` = :firstname, `contact_surname` = :surname, `contact_email` = :email, `telephone` = :telephone";
SIGABRT means in general that there is an uncaught exception. There should be more information on the console.
Alternate Vanilla JS version with click outside to hide checkboxes:
let expanded = false;
const multiSelect = document.querySelector('.multiselect');
multiSelect.addEventListener('click', function(e) {
const checkboxes = document.getElementById("checkboxes");
if (!expanded) {
checkboxes.style.display = "block";
expanded = true;
} else {
checkboxes.style.display = "none";
expanded = false;
}
e.stopPropagation();
}, true)
document.addEventListener('click', function(e){
if (expanded) {
checkboxes.style.display = "none";
expanded = false;
}
}, false)
I'm using addEventListener instead of onClick in order to take advantage of the capture/bubbling phase options along with stopPropagation(). You can read more about the capture/bubbling here: https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
The rest of the code matches vitfo's original answer (but no need for onclick() in the html). A couple of people have requested this functionality sans jQuery.
Here's codepen example https://codepen.io/davidysoards/pen/QXYYYa?editors=1010
I had the same issue and my issue was the device not having the right date and time. Once I fixed that the certificate is being trusted.
I see a couple of issues.
First:
ser.read() is only going to return 1 byte at a time.
If you specify a count
ser.read(5)
it will read 5 bytes (less if timeout occurrs before 5 bytes arrive.)
If you know that your input is always properly terminated with EOL characters, better way is to use
ser.readline()
That will continue to read characters until an EOL is received.
Second:
Even if you get ser.read() or ser.readline() to return multiple bytes, since you are iterating over the return value, you will still be handling it one byte at a time.
Get rid of the
for line in ser.read():
and just say:
line = ser.readline()
Deletes all child fields in the database then we use on_delete as so:
class user(models.Model):
commodities = models.ForeignKey(commodity, on_delete=models.CASCADE)
deasync turns async function into sync, implemented with a blocking mechanism by calling Node.js event loop at JavaScript layer. As a result, deasync only blocks subsequent code from running without blocking entire thread, nor incuring busy wait. With this module, here is the answer to the jsFiddle challenge:
function AnticipatedSyncFunction(){
var ret;
setTimeout(function(){
ret = "hello";
},3000);
while(ret === undefined) {
require('deasync').runLoopOnce();
}
return ret;
}
var output = AnticipatedSyncFunction();
//expected: output=hello (after waiting for 3 sec)
console.log("output="+output);
//actual: output=hello (after waiting for 3 sec)
(disclaimer: I am the co-author of deasync
. The module was created after posting this question and found no workable proposal.)
My problem was, that the SDK Tools updated it to the latest version, in my case it was 1.0.0-alpha9, but in my gradle dependency was set to
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha8' So, you can change your gradle build file to
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha9' Or you check "Show package details" in the SDK Tools Editor and install your needed version. See screenshow below. Image of SDK Tools
There is a useful difference between call
and start /wait
when calling regsvr32.exe /s
for example, also referenced by Gary in
in his answer to how-do-i-get-the-application-exit-code-from-a-windows-command-line
call regsvr32.exe /s broken.dll
echo %errorlevel%
will always return 0 but
start /wait regsvr32.exe /s broken.dll
echo %errorlevel%
will return the error level from regsvr32.exe
<div class="rmz-srchbg">
<input type="text" id="globalsearchstr" name="search" value="" class="rmz-txtbox">
<input type="submit" value=" " id="srchbtn" class="rmz-srchico">
<br style="clear:both;">
</div>
$(document).ready(function() {
$('#globalsearchstr').bind('mouseenter', function() {
$(this).parent().css("background", "black");
});
});
You can not "attach" a SASS/SCSS file to an HTML document.
SASS/SCSS is a CSS preprocessor that runs on the server and compiles to CSS code that your browser understands.
There are client-side alternatives to SASS that can be compiled in the browser using javascript such as LESS CSS, though I advise you compile to CSS for production use.
It's as simple as adding 2 lines of code to your HTML file.
<link rel="stylesheet/less" type="text/css" href="styles.less" />
<script src="less.js" type="text/javascript"></script>
you can simply use your own code but add name for the select tag
<form method="POST" action="index.php?action=contact_agent&agent_id=">
<select name="agent_id">
<option value="1">Agent Homer</option>
<option value="2">Agent Lenny</option>
<option value="3">Agent Carl</option>
</select>
then you can access it like this
String agent=request.getparameter("agent_id");
you can use setTextColor(int) method or add style to change text color.
<style name="ReviewScreenKbbViewMoreStyle">
<item name="android:textColor">#2F2E86</item>
<item name="android:textStyle">bold</item>
<item name="android:textSize">10dip</item>
You may use this package renderer, I have written to solve this kind of problem, it's a wrapper to serve JSON, JSONP, XML, HTML etc.
Like this:
InputStream stream = new ByteArrayInputStream(exampleString.getBytes(StandardCharsets.UTF_8));
Note that this assumes that you want an InputStream that is a stream of bytes that represent your original string encoded as UTF-8.
For versions of Java less than 7, replace StandardCharsets.UTF_8
with "UTF-8"
.
Another way to get the user name (and most of the information) is to access the database directly and read the info from the tables.
Solr I am not sure but you can delete all the data from hbase using truncate command like below:
truncate 'table_name'
It will delete all row-keys from hbase table.
Based on the suggestion of using the PushbackInputStream, you'll find an exemple implementation here:
/**
* @author Lorber Sebastien <i>([email protected])</i>
*/
public class NonEmptyInputStream extends FilterInputStream {
/**
* Once this stream has been created, do not consume the original InputStream
* because there will be one missing byte...
* @param originalInputStream
* @throws IOException
* @throws EmptyInputStreamException
*/
public NonEmptyInputStream(InputStream originalInputStream) throws IOException, EmptyInputStreamException {
super( checkStreamIsNotEmpty(originalInputStream) );
}
/**
* Permits to check the InputStream is empty or not
* Please note that only the returned InputStream must be consummed.
*
* see:
* http://stackoverflow.com/questions/1524299/how-can-i-check-if-an-inputstream-is-empty-without-reading-from-it
*
* @param inputStream
* @return
*/
private static InputStream checkStreamIsNotEmpty(InputStream inputStream) throws IOException, EmptyInputStreamException {
Preconditions.checkArgument(inputStream != null,"The InputStream is mandatory");
PushbackInputStream pushbackInputStream = new PushbackInputStream(inputStream);
int b;
b = pushbackInputStream.read();
if ( b == -1 ) {
throw new EmptyInputStreamException("No byte can be read from stream " + inputStream);
}
pushbackInputStream.unread(b);
return pushbackInputStream;
}
public static class EmptyInputStreamException extends RuntimeException {
public EmptyInputStreamException(String message) {
super(message);
}
}
}
And here are some passing tests:
@Test(expected = EmptyInputStreamException.class)
public void test_check_empty_input_stream_raises_exception_for_empty_stream() throws IOException {
InputStream emptyStream = new ByteArrayInputStream(new byte[0]);
new NonEmptyInputStream(emptyStream);
}
@Test
public void test_check_empty_input_stream_ok_for_non_empty_stream_and_returned_stream_can_be_consummed_fully() throws IOException {
String streamContent = "HELLooooô wörld";
InputStream inputStream = IOUtils.toInputStream(streamContent, StandardCharsets.UTF_8);
inputStream = new NonEmptyInputStream(inputStream);
assertThat(IOUtils.toString(inputStream,StandardCharsets.UTF_8)).isEqualTo(streamContent);
}
typedef is your friend
After going back and looking at many of the other answers I found that a deeper explanation is in order, as many of the other answers either suffer from performance problems or force you to use unusual or burdensome syntax to declare the array, or access the array elements ( or all the above ).
First off, this answer assumes you know the dimensions of the array at compile time. If you do, then this is the best solution as it will both give the best performance and allows you to use standard array syntax to access the array elements.
The reason this gives the best performance is because it allocates all of the arrays as a contiguous block of memory meaning that you are likely to have less page misses and better spacial locality. Allocating in a loop may cause the individual arrays to end up scattered on multiple non-contiguous pages through the virtual memory space as the allocation loop could be interrupted ( possibly multiple times ) by other threads or processes, or simply due to the discretion of the allocator filling in small, empty memory blocks it happens to have available.
The other benefits are a simple declaration syntax and standard array access syntax.
In C++ using new:
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
typedef double (array5k_t)[5000];
array5k_t *array5k = new array5k_t[5000];
array5k[4999][4999] = 10;
printf("array5k[4999][4999] == %f\n", array5k[4999][4999]);
return 0;
}
Or C style using calloc:
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
typedef double (*array5k_t)[5000];
array5k_t array5k = calloc(5000, sizeof(double)*5000);
array5k[4999][4999] = 10;
printf("array5k[4999][4999] == %f\n", array5k[4999][4999]);
return 0;
}
A very simple example is that if you have a UserService
that has @Autowired
jpa resposiroty UserRepository
...
class UserService{
@Autowired
UserRepository userRepository;
...
}
then in the test class for UserService
you will do
...
class TestUserService{
@Mock
UserRepository userRepository;
@InjectMocks
UserService userService;
...
}
@InjectMocks
tells the framework that take the @Mock UserRepository userRespository;
and inject that into userService
so rather than auto wiring a real instance of UserRepository
a Mock of UserRepository
will be injected in userService
.
From Windows 10 version 1607, the limitation has been removed by setting a registry key
If you're interested in producing HTML5 hybrid applications (web apps wrapped in a native container giving access to device functions), the Nomad Visual Studio extension supports building for android devices.
Wildcards aren't expanded inside quoted strings. And when wildcard is expanded, it's returned unchanged if there are no matches, it doesn't expand into an empty string. Try:
output="$(ls home/edward/bank1/fiche/Test* 2>/dev/null)"
if [ -n "$output" ]
then echo "Found one"
else echo "Found none"
fi
If the wildcard expanded to filenames, ls
will list them on stdout
; otherwise it will print an error on stderr
, and nothing on stdout. The contents of stdout
are assigned to output
.
if [ -n "$output" ]
tests whether $output
contains anything.
Another way to write this would be:
if [ $(ls home/edward/bank1/fiche/Test* 2>/dev/null | wc -l) -gt 0 ]
The formula above didn't work for me, but I used this without any issue. Pass your current location to the function, and loop through an array of markers to find the closest:
function find_closest_marker( lat1, lon1 ) {
var pi = Math.PI;
var R = 6371; //equatorial radius
var distances = [];
var closest = -1;
for( i=0;i<markers.length; i++ ) {
var lat2 = markers[i].position.lat();
var lon2 = markers[i].position.lng();
var chLat = lat2-lat1;
var chLon = lon2-lon1;
var dLat = chLat*(pi/180);
var dLon = chLon*(pi/180);
var rLat1 = lat1*(pi/180);
var rLat2 = lat2*(pi/180);
var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
Math.sin(dLon/2) * Math.sin(dLon/2) * Math.cos(rLat1) * Math.cos(rLat2);
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
var d = R * c;
distances[i] = d;
if ( closest == -1 || d < distances[closest] ) {
closest = i;
}
}
// (debug) The closest marker is:
console.log(markers[closest]);
}
To demonstrate how this works--
CREATE TABLE T1 (ID INT NOT NULL, SomeVal CHAR(1));
ALTER TABLE T1 ADD CONSTRAINT [PK_ID] PRIMARY KEY CLUSTERED (ID);
CREATE TABLE T2 (FKID INT, SomeOtherVal CHAR(2));
INSERT T1 (ID, SomeVal) SELECT 1, 'A';
INSERT T1 (ID, SomeVal) SELECT 2, 'B';
INSERT T2 (FKID, SomeOtherVal) SELECT 1, 'A1';
INSERT T2 (FKID, SomeOtherVal) SELECT 1, 'A2';
INSERT T2 (FKID, SomeOtherVal) SELECT 2, 'B1';
INSERT T2 (FKID, SomeOtherVal) SELECT 2, 'B2';
INSERT T2 (FKID, SomeOtherVal) SELECT 3, 'C1'; --orphan
INSERT T2 (FKID, SomeOtherVal) SELECT 3, 'C2'; --orphan
--Add the FK CONSTRAINT will fail because of existing orphaned records
ALTER TABLE T2 ADD CONSTRAINT FK_T2_T1 FOREIGN KEY (FKID) REFERENCES T1 (ID); --fails
--Same as ADD above, but explicitly states the intent to CHECK the FK values before creating the CONSTRAINT
ALTER TABLE T2 WITH CHECK ADD CONSTRAINT FK_T2_T1 FOREIGN KEY (FKID) REFERENCES T1 (ID); --fails
--Add the CONSTRAINT without checking existing values
ALTER TABLE T2 WITH NOCHECK ADD CONSTRAINT FK_T2_T1 FOREIGN KEY (FKID) REFERENCES T1 (ID); --succeeds
ALTER TABLE T2 CHECK CONSTRAINT FK_T2_T1; --succeeds since the CONSTRAINT is attributed as NOCHECK
--Attempt to enable CONSTRAINT fails due to orphans
ALTER TABLE T2 WITH CHECK CHECK CONSTRAINT FK_T2_T1; --fails
--Remove orphans
DELETE FROM T2 WHERE FKID NOT IN (SELECT ID FROM T1);
--Enabling the CONSTRAINT succeeds
ALTER TABLE T2 WITH CHECK CHECK CONSTRAINT FK_T2_T1; --succeeds; orphans removed
--Clean up
DROP TABLE T2;
DROP TABLE T1;
"mysql" may be found even if mysql and mariadb is uninstalled, but not "mysqld".
Faster than rpm -qa | grep mysqld is:
which mysqld
Just add these lines of code to your activity/fragment java file:
getWindow().setFlags(
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
);
Add android:fitsSystemWindows="true"
to the layout, and this layout will resize.
>>> import datetime
>>> d = datetime.datetime.strptime('2011-06-09', '%Y-%m-%d')
>>> d.strftime('%b %d,%Y')
'Jun 09,2011'
In pre-2.5 Python, you can replace datetime.strptime
with time.strptime
, like so (untested): datetime.datetime(*(time.strptime('2011-06-09', '%Y-%m-%d')[0:6]))
The transcript mode is what you want and is used by Google Talk and the SMS/MMS application. Are you correctly calling notifyDatasetChanged() on your adapter when you add items?
Following query helped me. Instead of using LIKE
, you can use ~*
.
select id, name from hosts where name ~* 'julia|lena|jack';
You have two choices to do this.
The Quick and Dirty is selecting your files (using ctrl) in Project Explorer view, right-click them, choose Replace with...
and then you choose the best option for you, from Latest from Repository
, or some Branch
version. After getting those files you modify them (with a space, or fix something, your call and commit them to create a newer revision.
A more clean way is choosing Merge
at team menu and navigate through the wizard that will help you to recovery the old version in the actual revision.
Both commands have their command-line equivalents: svn revert
and svn merge
.
Such unexpected problems can appear when you copy the code from a web page or email and the text contains unprintable characters like individual CR or LF and non-breaking spaces.
I'm sorry to disagree, but according to the rules for parsing a legacy color value posted by @Yuhong Bao, chucknorris
DOES NOT equate to #CC0000
, but rather to #C00000
, a very similar but slightly different hue of red. I used the Firefox ColorZilla add-on to verify this.
The rules state:
chucknorris0
chuc knor ris0
ch kn ri
C0 00 00
I was able to use these rules to correctly interpret the following strings:
LuckyCharms
Luck
LuckBeALady
LuckBeALadyTonight
GangnamStyle
UPDATE: The original answerers who said the color was #CC0000
have since edited their answers to include the correction.
You can use &
in place of &
So I ran into this problem recently. The issue was in the build/run configuration. Apparently android studio had chosen an activity in my project as the launch activity thus disregarding my choice in the manifest file.
Click on the module name just to the left of the run button and click on "Edit configurations..." Now make sure "Launch default Activity" is selected.
The funny thing when I got this error was that I could still launch the app with from the device and it starts with the preferred Activity. But launching from the IDE seemed impossible.
select fields
from tableA --left
left join tableB --right
on tableA.key = tableB.key
The table in the from
in this example tableA
, is on the left side of relation.
tableA <- tableB
[left]------[right]
So if you want to take all rows from the left table (tableA
), even if there are no matches in the right table (tableB
), you'll use the "left join".
And if you want to take all rows from the right table (tableB
), even if there are no matches in the left table (tableA
), you will use the right join
.
Thus, the following query is equivalent to that used above.
select fields
from tableB
right join tableA on tableB.key = tableA.key
If you are open to use third party tools you'd have a look at this one: https://github.com/CircleOfNice/DoctrineRestDriver
This is a completely new way to work with APIs.
First of all you define an entity which is defining the structure of incoming and outcoming data and annotate it with datasources:
/*
* @Entity
* @DataSource\Select("http://www.myApi.com/products/{id}")
* @DataSource\Insert("http://www.myApi.com/products")
* @DataSource\Select("http://www.myApi.com/products/update/{id}")
* @DataSource\Fetch("http://www.myApi.com/products")
* @DataSource\Delete("http://www.myApi.com/products/delete/{id}")
*/
class Product {
private $name;
public function setName($name) {
$this->name = $name;
}
public function getName() {
return $this->name;
}
}
Now it's pretty easy to communicate with the REST API:
$product = new Product();
$product->setName('test');
// sends an API request POST http://www.myApi.com/products ...
$em->persist($product);
$em->flush();
$product->setName('newName');
// sends an API request UPDATE http://www.myApi.com/products/update/1 ...
$em->flush();
Once you have add your layout with at least one widget in it, select your window and click the "Update" button of QtDesigner. The interface will be resized at the most optimized size and your layout will fit the whole window. Then when resizing the window, the layout will be resized in the same way.
Tried in Hive and got the below output
table1
1,wqe,chennai,india
2,stu,salem,india
3,mia,bangalore,india
4,yepie,newyork,USA
table2
1,wqe,chennai,india
2,stu,salem,india
3,mia,bangalore,india
5,chapie,Los angels,USA
Inner Join
SELECT * FROM table1 INNER JOIN table2 ON (table1.id = table2.id);
1 wqe chennai india 1 wqe chennai india
2 stu salem india 2 stu salem india
3 mia bangalore india 3 mia bangalore india
Left Join
SELECT * FROM table1 LEFT JOIN table2 ON (table1.id = table2.id);
1 wqe chennai india 1 wqe chennai india
2 stu salem india 2 stu salem india
3 mia bangalore india 3 mia bangalore india
4 yepie newyork USA NULL NULL NULL NULL
Left Semi Join
SELECT * FROM table1 LEFT SEMI JOIN table2 ON (table1.id = table2.id);
1 wqe chennai india
2 stu salem india
3 mia bangalore india
note: Only records in left table are displayed whereas for Left Join both the table records displayed
For Kotlin :
fun getFolderName() {
val uri: Uri
val cursor: Cursor?
uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
val projection = arrayOf(MediaStore.Audio.AudioColumns.DATA)
cursor = requireActivity().contentResolver.query(uri, projection, null, null, null)
if (cursor != null) {
column_index_data = cursor.getColumnIndexOrThrow(MediaStore.Audio.AudioColumns.DATA)
}
while (cursor!!.moveToNext()) {
absolutePathOfImage = cursor.getString(column_index_data)
val fileName: String = File(absolutePathOfImage).parentFile.name
}
}
These are literals and are described in section 3.10 of the Java language spec.
Alternatively, you could go with pgrep
or Process Grep. (Busybox is needed)
You could do a adb shell pgrep com.example.app
and it would display just the process Id.
As a suggestion, since Android is Linux, you can use most basic Linux commands with adb shell
to navigate/control around. :D
I faced the same problem but When I changed the skin of AVD device to HVGA, it worked.
An elegant option is writing an extension method (see below) for the DataTable class of .net framework.
This extention method can be called as follows:
using System;
using System.Collections.Generic;
using System.Linq;
using Excel = Microsoft.Office.Interop.Excel;
using System.Data;
using System.Data.OleDb;
DataTable dt;
// fill table data in dt here
...
// export DataTable to excel
// save excel file without ever making it visible if filepath is given
// don't save excel file, just make it visible if no filepath is given
dt.ExportToExcel(ExcelFilePath);
Extension method for DataTable class:
public static class My_DataTable_Extensions
{
// Export DataTable into an excel file with field names in the header line
// - Save excel file without ever making it visible if filepath is given
// - Don't save excel file, just make it visible if no filepath is given
public static void ExportToExcel(this DataTable tbl, string excelFilePath = null) {
try {
if (tbl == null || tbl.Columns.Count == 0)
throw new Exception("ExportToExcel: Null or empty input table!\n");
// load excel, and create a new workbook
var excelApp = new Excel.Application();
excelApp.Workbooks.Add();
// single worksheet
Excel._Worksheet workSheet = excelApp.ActiveSheet;
// column headings
for (var i = 0; i < tbl.Columns.Count; i++) {
workSheet.Cells[1, i + 1] = tbl.Columns[i].ColumnName;
}
// rows
for (var i = 0; i < tbl.Rows.Count; i++) {
// to do: format datetime values before printing
for (var j = 0; j < tbl.Columns.Count; j++) {
workSheet.Cells[i + 2, j + 1] = tbl.Rows[i][j];
}
}
// check file path
if (!string.IsNullOrEmpty(excelFilePath)) {
try {
workSheet.SaveAs(excelFilePath);
excelApp.Quit();
MessageBox.Show("Excel file saved!");
}
catch (Exception ex) {
throw new Exception("ExportToExcel: Excel file could not be saved! Check filepath.\n"
+ ex.Message);
}
} else { // no file path is given
excelApp.Visible = true;
}
}
catch (Exception ex) {
throw new Exception("ExportToExcel: \n" + ex.Message);
}
}
}
You can do it this with two replace's
//let stw be "John Smith $100,000.00 M"
sb_trim = Regex.Replace(stw, @"\s+\$|\s+(?=\w+$)", ",");
//sb_trim becomes "John Smith,100,000.00,M"
sb_trim = Regex.Replace(sb_trim, @"(?<=\d),(?=\d)|[.]0+(?=,)", "");
//sb_trim becomes "John Smith,100000,M"
sw.WriteLine(sb_trim);
Old question but i feel i should add the following, even more because .net 4.0 had already launched at the time the question was written.
Starting with .net 4.0 there is the namespace System.Collections.Concurrent
which includes collections that are thread-safe.
The collection System.Collections.Concurrent.ConcurrentDictionary<>
does exactly what you want. It has the AddOrUpdate()
method with the added advantage of being thread-safe.
If you're in a high-performance scenario and not handling multiple threads the already given answers of map[key] = value
are faster.
In most scenarios this performance benefit is insignificant. If so i'd advise to use the ConcurrentDictionary because:
If your list is contained in the Adapter itself, calling the function that updates the list should also call notifyDataSetChanged()
.
Running this function from the UI Thread did the trick for me:
The refresh()
function inside the Adapter
public void refresh(){
//manipulate list
notifyDataSetChanged();
}
Then in turn run this function from the UI Thread
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
adapter.refresh()
}
});
Follow these steps then you solve your problem 100%.
Then open command prompt by pressing (window
+ r
) keys and type services.msc
and click OK or press Enter key.
And search **SQL Server (SQLEXPRESS) as I show in the image.
Now see left upper side and click start.
If you open Microsoft SQL Server Management then you not get any type error.
Enjoy!!!
In Java 7 and higher you can use listdir
Path dir = ...;
try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
for (Path file: stream) {
System.out.println(file.getFileName());
}
} catch (IOException | DirectoryIteratorException x) {
// IOException can never be thrown by the iteration.
// In this snippet, it can only be thrown by newDirectoryStream.
System.err.println(x);
}
You can also create a filter that can then be passed into the newDirectoryStream
method above
DirectoryStream.Filter<Path> filter = new DirectoryStream.Filter<Path>() {
public boolean accept(Path file) throws IOException {
try {
return (Files.isRegularFile(path));
} catch (IOException x) {
// Failed to determine if it's a file.
System.err.println(x);
return false;
}
}
};
For other filtering examples, [see documentation].(http://docs.oracle.com/javase/tutorial/essential/io/dirs.html#glob)
For future googlers (thousands have now googled this question):
To set your mind at ease, the onClick
event does work with divs in react, so double-check your code syntax.
These are right:
<div onClick={doThis}>
<div onClick={() => doThis()}>
These are wrong:
<div onClick={doThis()}>
<div onClick={() => doThis}>
(and don't forget to close your tags... Watch for this:
<div onClick={doThis}
missing closing tag on the div)
To dismiss or cancel AlertDialog.Builder
dialog.setNegativeButton("?????", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
you call dismiss() on the dialog interface
Why are you using a macro? Excel has Password Protection built-in. When you select File/Save As... there should be a Tools button by the Save button, click it then "General Options" where you can enter a "Password to Open" and a "Password to Modify".
Firstly make sure that you have installed python 2.7 or higher
Open Command Prompt as administrator and change directory to python and then change directory to Scripts by typing cd Scripts then type pip.exe and now you can install modules Step by Step:
Open Cmd
type in "cd \" and then enter
type in "cd python2.7" and then enter
Note that my python version is 2.7 so my directory is that so use your python folder here...
type in "cd Scripts" and enter
Now enter this "pip.exe"
Now it prompts you to install modules
You can use not only now()
, also current_timestamp()
and localtimestamp()
.
The main reason of incorrect display timestamp is inserting NOW() with single quotes! It didn't work for me in MySQL Workbench because of this IDE add single quotes for mysql functions and i didn't recognize it at once )
Don't use functions with single quotes like in MySQL Workbench. It doesn't work.
You can find your app package name by below command:
adb shell pm list packages
Above command returns package list of all apps, Example:
org.linphone.debug
.
.
com.android.email
Now I want to start app linphone by using below command and this worked for me:
adb shell am start org.belphone.debug
There is no single statement that can be used to achieve this aim.
You could of course create yourself a stored procedure
that you could use to perform these various administrative tasks.
You could then execute the procedure using this single statement.
Exec sp_CleanDatabases @DatabaseName='DBname'
Script for backward-compatibility: https://github.com/douglascrockford/JSON-js/blob/master/json2.js
And call:
var myJsonString = JSON.stringify(yourArray);
Note: The JSON object is now part of most modern web browsers (IE 8 & above). See caniuse for full listing. Credit goes to: @Spudley for his comment below
It depends on what the zip contains. Take a look to see if it got content.jar and artifacts.jar. If it does, it is an archived updated site. Install from it the same way as you install from a remote site.
If the zip doesn't contain content.jar and artifacts.jar, go to your Eclipse install's dropins directory, create a subfolder (name doesn't matter) and expand your zip into that folder. Restart Eclipse.
There's a bridge based on JavaScriptCore (from WebKit), but it's pretty incomplete: http://code.google.com/p/pyjscore/
If you are using Float or Integer then you can assign default value like this ...
Integer[] data = new Integer[20];
Arrays.fill(data,new Integer(0));
For Active Directory users, an alternative way to do this would be -- assuming all your groups are stored in OU=Groups,DC=CorpDir,DC=QA,DC=CorpName
-- to use the query (&(objectCategory=group)(CN=GroupCN))
. This will work well for all groups with less than 1500 members. If you want to list all members of a large AD group, the same query will work, but you'll have to use ranged retrieval to fetch all the members, 1500 records at a time.
The key to performing ranged retrievals is to specify the range in the attributes using this syntax: attribute;range=low-high. So to fetch all members of an AD Group with 3000 members, first run the above query asking for the member;range=0-1499
attribute to be returned, then for the member;range=1500-2999
attribute.
Definitely it is a concern. Dockerfiles are commonly checked in to repositories and shared with other people. An alternative is to provide any credentials (usernames, passwords, tokens, anything sensitive) as environment variables at runtime. This is possible via the -e
argument (for individual vars on the CLI) or --env-file
argument (for multiple variables in a file) to docker run
. Read this for using environmental with docker-compose.
Using --env-file
is definitely a safer option since this protects against the secrets showing up in ps
or in logs if one uses set -x
.
However, env vars are not particularly secure either. They are visible via docker inspect
, and hence they are available to any user that can run docker
commands. (Of course, any user that has access to docker
on the host also has root anyway.)
My preferred pattern is to use a wrapper script as the ENTRYPOINT
or CMD
. The wrapper script can first import secrets from an outside location in to the container at run time, then execute the application, providing the secrets. The exact mechanics of this vary based on your run time environment. In AWS, you can use a combination of IAM roles, the Key Management Service, and S3 to store encrypted secrets in an S3 bucket. Something like HashiCorp Vault or credstash is another option.
AFAIK there is no optimal pattern for using sensitive data as part of the build process. In fact, I have an SO question on this topic. You can use docker-squash to remove layers from an image. But there's no native functionality in Docker for this purpose.
You may find shykes comments on config in containers useful.
To be honest I don't know that you can. If you just set up a test instance and open Excel twice, because that is what you are talking about happening, if you name one workbook "test1" and another "test2" if you try to move a workbook, or even a worksheet between the two applications they are totally unaware of each other. I also notice odd behavior while simply manually cutting and pasting from Excel instance 1 and Excel instance 2.
You may have to write two macros kind of a drop off and then a pick up from a location that you share between them. Maybe a command button on the tool bar.
Maybe one of the super excel guys on here have a better answer.
The targeted browsers I need to support already support async/await, but when writing mocha tests, without the proper setting I still got this error.
Most of the articles I googled are outdated, including the accepted answer and high voted answers here, i.e. you don't need polyfill
, babel-regenerator-runtime
, babel-plugin-transform-runtime
. etc. if your target browser(s) already supports async/await (of course if not you need polyfill)
I don't want to use webpack
either.
Tyler Long's answer is actually on the right track since he suggested babel-preset-env
(but I omitted it first as he mentioned polifill at the beginning). I still got the ReferenceError: regeneratorRuntime is not defined
at the first then I realized it was because I didn't set the target. After setting the target for node I fix the regeneratorRuntime error:
"scripts": {
//"test": "mocha --compilers js:babel-core/register"
//https://github.com/mochajs/mocha/wiki/compilers-deprecation
"test": "mocha --require babel-core/register"
},
"devDependencies": {
"babel-core": "^6.26.3",
"babel-preset-env": "^1.7.0",
"mocha": "^5.2.0"
},
//better to set it .bablerc, I list it here for brevity and it works too.
"babel": {
"presets": [
["env",{
"targets": {
"node": "current"
"chrome": 66,
"firefox": 60,
},
"debug":true
}]
]
}
I had the same exception, this is how I solved the problem:
Preconditions:
Junit class (and test), that extended another class.
ApplicationContext initialized using spring, that init the project.
The Application context was initialized in @Before method
Solution:
Init the application context from @BeforeClass method, since the parent class also required some classes that were initialized from within the application context.
Hope this will help.
That SSL error is misleading. I am using Anaconda 3, conda version 4.6.11, have the most current version of openssl on a Windows 10 instance. I got the issue resolved by changing the security settings on the Anaconda3 folder to Full Control. Don't think this helped, but I also have modified the ..\Anaconda3\Lib\site-packages\certifi\cacert.pem file to include the company's SSL cert.
Hope this info helps you.
In order to do this for multiple items do something like:
foreach (var item in Model)
{
@Html.RadioButtonFor(m => m.item, "Yes") @:Yes
@Html.RadioButtonFor(m => m.item, "No") @:No
}
You would need also to import the HttpClientModule
from Angular '@angular/common/http'
into your main AppModule for making HTTP requests.
app.module.ts
import { HttpClientModule } from '@angular/common/http';
import { ServiceService } from '../../../services/service.service';
@NgModule({
imports: [
HttpClientModule
],
providers: [
ServiceService
]
})
export class AppModule {...}
In the situation where you are NOT going to use this over and over (i.e. not needed in your style sheet), inline style statements usually work anywhere they would work inyour style sheet. E.g:
<div data-role="controlgroup" data-type="horizontal" style="text-align:center;">
The Theory
In theory, when a thread tries to lock a mutex and it does not succeed, because the mutex is already locked, it will go to sleep, immediately allowing another thread to run. It will continue to sleep until being woken up, which will be the case once the mutex is being unlocked by whatever thread was holding the lock before. When a thread tries to lock a spinlock and it does not succeed, it will continuously re-try locking it, until it finally succeeds; thus it will not allow another thread to take its place (however, the operating system will forcefully switch to another thread, once the CPU runtime quantum of the current thread has been exceeded, of course).
The Problem
The problem with mutexes is that putting threads to sleep and waking them up again are both rather expensive operations, they'll need quite a lot of CPU instructions and thus also take some time. If now the mutex was only locked for a very short amount of time, the time spent in putting a thread to sleep and waking it up again might exceed the time the thread has actually slept by far and it might even exceed the time the thread would have wasted by constantly polling on a spinlock. On the other hand, polling on a spinlock will constantly waste CPU time and if the lock is held for a longer amount of time, this will waste a lot more CPU time and it would have been much better if the thread was sleeping instead.
The Solution
Using spinlocks on a single-core/single-CPU system makes usually no sense, since as long as the spinlock polling is blocking the only available CPU core, no other thread can run and since no other thread can run, the lock won't be unlocked either. IOW, a spinlock wastes only CPU time on those systems for no real benefit. If the thread was put to sleep instead, another thread could have ran at once, possibly unlocking the lock and then allowing the first thread to continue processing, once it woke up again.
On a multi-core/multi-CPU systems, with plenty of locks that are held for a very short amount of time only, the time wasted for constantly putting threads to sleep and waking them up again might decrease runtime performance noticeably. When using spinlocks instead, threads get the chance to take advantage of their full runtime quantum (always only blocking for a very short time period, but then immediately continue their work), leading to much higher processing throughput.
The Practice
Since very often programmers cannot know in advance if mutexes or spinlocks will be better (e.g. because the number of CPU cores of the target architecture is unknown), nor can operating systems know if a certain piece of code has been optimized for single-core or multi-core environments, most systems don't strictly distinguish between mutexes and spinlocks. In fact, most modern operating systems have hybrid mutexes and hybrid spinlocks. What does that actually mean?
A hybrid mutex behaves like a spinlock at first on a multi-core system. If a thread cannot lock the mutex, it won't be put to sleep immediately, since the mutex might get unlocked pretty soon, so instead the mutex will first behave exactly like a spinlock. Only if the lock has still not been obtained after a certain amount of time (or retries or any other measuring factor), the thread is really put to sleep. If the same code runs on a system with only a single core, the mutex will not spinlock, though, as, see above, that would not be beneficial.
A hybrid spinlock behaves like a normal spinlock at first, but to avoid wasting too much CPU time, it may have a back-off strategy. It will usually not put the thread to sleep (since you don't want that to happen when using a spinlock), but it may decide to stop the thread (either immediately or after a certain amount of time) and allow another thread to run, thus increasing chances that the spinlock is unlocked (a pure thread switch is usually less expensive than one that involves putting a thread to sleep and waking it up again later on, though not by far).
Summary
If in doubt, use mutexes, they are usually the better choice and most modern systems will allow them to spinlock for a very short amount of time, if this seems beneficial. Using spinlocks can sometimes improve performance, but only under certain conditions and the fact that you are in doubt rather tells me, that you are not working on any project currently where a spinlock might be beneficial. You might consider using your own "lock object", that can either use a spinlock or a mutex internally (e.g. this behavior could be configurable when creating such an object), initially use mutexes everywhere and if you think that using a spinlock somewhere might really help, give it a try and compare the results (e.g. using a profiler), but be sure to test both cases, a single-core and a multi-core system before you jump to conclusions (and possibly different operating systems, if your code will be cross-platform).
Actually not iOS specific but iOS is the platform where most developers may face that problem: If your system has a thread scheduler, that does not guarantee that any thread, no matter how low its priority may be, will eventually get a chance to run, then spinlocks can lead to permanent deadlocks. The iOS scheduler distinguishes different classes of threads and threads on a lower class will only run if no thread in a higher class wants to run as well. There is no back-off strategy for this, so if you permanently have high class threads available, low class threads will never get any CPU time and thus never any chance to perform any work.
The problem appears as follow: Your code obtains a spinlock in a low prio class thread and while it is in the middle of that lock, the time quantum has exceeded and the thread stops running. The only way how this spinlock can be released again is if that low prio class thread gets CPU time again but this is not guaranteed to happen. You may have a couple of high prio class threads that constantly want to run and the task scheduler will always prioritize those. One of them may run across the spinlock and try to obtain it, which isn't possible of course, and the system will make it yield. The problem is: A thread that yielded is immediately available for running again! Having a higher prio than the thread holding the lock, the thread holding the lock has no chance to get CPU runtime. Either some other thread will get runtime or the thread that just yielded.
Why does this problem not occur with mutexes? When the high prio thread cannot obtain the mutex, it won't yield, it may spin a bit but will eventually be sent to sleep. A sleeping thread is not available for running until it is woken up by an event, e.g. an event like the mutex being unlocked it has been waiting for. Apple is aware of that problem and has thus deprecated OSSpinLock
as a result. The new lock is called os_unfair_lock
. This lock avoids the situation mentioned above as it is aware of the different thread priority classes. If you are sure that using spinlocks is a good idea in your iOS project, use that one. Stay away from OSSpinLock
! And under no circumstances implement your own spinlocks in iOS! If in doubt, use a mutex! macOS is not affected by this issue as it has a different thread scheduler that won't allow any thread (even low prio threads) to "run dry" on CPU time, still the same situation can arise there and will then lead to very poor performance, thus OSSpinLock
is deprecated on macOS as well.
The number of arguments is $#
Search for it on this page to learn more: http://tldp.org/LDP/abs/html/internalvariables.html#ARGLIST
use explode() .
Example from the docs.
// Example 1
$pizza = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2
note that explode has a limit function. So you could do something like
$message = implode(" ", explode(" ", $long_message, 20));
Might not be a solution for all but I found that if I reduced the screen resolution of the RDP session, I was able to get in. The server was at 95% capacity I went from 3 high res monitors to 1 800x600 window.
Use intrinsicContentSize to find the text height and width.
yourLabel.intrinsicContentSize.width
This will work even you have custom spacing between your string like "T E X T"
PowerShell has built-in XML and XPath functions. You can use the Select-Xml cmdlet with an XPath query to select nodes from XML object and then .Node.'#text' to access node value.
[xml]$xml = Get-Content $serviceStatePath
$nodes = Select-Xml "//Object[Property/@Name='ServiceState' and Property='Running']/Property[@Name='DisplayName']" $xml
$nodes | ForEach-Object {$_.Node.'#text'}
Or shorter
[xml]$xml = Get-Content $serviceStatePath
Select-Xml "//Object[Property/@Name='ServiceState' and Property='Running']/Property[@Name='DisplayName']" $xml |
% {$_.Node.'#text'}
Make sure your iframe is already loaded. Old but reliable way without jQuery:
<iframe src="samedomain.com/page.htm" id="iframe" onload="access()"></iframe>
<script>
function access() {
var iframe = document.getElementById("iframe");
var innerDoc = iframe.contentDocument || iframe.contentWindow.document;
console.log(innerDoc.body);
}
</script>
They are not identical. Memcache is older but it has some limitations. I was using just fine in my application until I realized you can't store literal FALSE
in cache. Value FALSE
returned from the cache is the same as FALSE returned when a value is not found in the cache. There is no way to check which is which. Memcached has additional method (among others) Memcached::getResultCode
that will tell you whether key was found.
Because of this limitation I switched to storing empty arrays instead of FALSE
in cache. I am still using Memcache, but I just wanted to put this info out there for people who are deciding.
In bash $1
is the first argument passed to the script, $2
second and so on
/usr/local/bin/abbyyocr9 -rl Swedish -if "$1" -of "$2" 2>&1
So you can use:
./your_script.sh some_source_file.png destination_file.txt
Explanation on double quotes;
consider three scripts:
# foo.sh
bash bar.sh $1
# cat foo2.sh
bash bar.sh "$1"
# bar.sh
echo "1-$1" "2-$2"
Now invoke:
$ bash foo.sh "a b"
1-a 2-b
$ bash foo2.sh "a b"
1-a b 2-
When you invoke foo.sh "a b"
then it invokes bar.sh a b
(two arguments), and with foo2.sh "a b"
it invokes bar.sh "a b"
(1 argument). Always have in mind how parameters are passed and expaned in bash, it will save you a lot of headache.
/usr/local/ssl/openssl.cnf
A path like this means the program has been compiled with either Cygwin or MSYS. If you must use this openssl
then you will need an interpreter that understands those paths, like Bash, which is provided by Cygwin or MSYS.
Another option would be to download or compile a Windows Native version of openssl
. Using that the program would instead require a path like
C:\Users\Steven\ssl\openssl.cnf
which would be better suited for the Command Prompt.
1)In your client side you can send you http.post request in string like below
var IndexInfo = JSON.stringify(this.scope.IndexTree);
this.$http.post('../../../api/EvaluationProcess/InsertEvaluationProcessInputType', "'" + IndexInfo + "'" ).then((response: any) => {}
2)Then in your web api controller you can deserialize it
public ApiResponce InsertEvaluationProcessInputType([FromBody]string IndexInfo)
{
var des = (ApiReceivedListOfObjects<TempDistributedIndex>)Newtonsoft.Json.JsonConvert.DeserializeObject(DecryptedProcessInfo, typeof(ApiReceivedListOfObjects<TempDistributedIndex>));}
3)Your ApiReceivedListOfObjects class should be like below
public class ApiReceivedListOfObjects<T>
{
public List<T> element { get; set; }
}
4)make sure that your serialized string (IndexInfo here) becomes like below structure before JsonConvert.DeserializeObject command in step 2
var resp = @"
{
""element"": [
{
""A"": ""A Jones"",
""B"": ""500015763""
},
{
""A"": ""B Smith"",
""B"": ""504986213""
},
{
""A"": ""C Brown"",
""B"": ""509034361""
}
]
}";
One item that seems to have been missed is star transformations. Index Intersection operators resolve the predicate by calculating the set of rows hit by each of the predicates before any I/O is done on the fact table. On a star schema you would index each individual dimension key and the query optimiser can resolve which rows to select by the index intersection computation. The indexes on individual columns give the best flexibility for this.
why?
because there is a great chance that your database contains serialized data (especially wp_options table), so using just "replace" might break data.
Use recommended serialization: https://puvox.software/tools/wordpress-migrator
Please see Python OS X development environment. The best way is to use MacPorts. Download and install MacPorts, then install Python via MacPorts by typing the following commands in the Terminal:
sudo port install python26 python_select sudo port select --set python python26
OR
sudo port install python30 python_select sudo port select --set python python30
Use the first set of commands to install Python 2.6 and the second set to install Python 3.0. Then use:
sudo port install py26-packagename
OR
sudo port install py30-packagename
In the above commands, replace packagename with the name of the package, for example:
sudo port install py26-setuptools
These commands will automatically install the package (and its dependencies) for the given Python version.
For a full list of available packages for Python, type:
port list | grep py26-
OR
port list | grep py30-
Which command you use depends on which version of Python you chose to install.
You must press twice on tap and (_) key each time, it must look like:
__init__
FYI - if you are importing a List into a JSP, chances are pretty good that you are violating MVC principles. Take a few hours now to read up on the MVC approach to web app development (including use of taglibs) - do some more googling on the subject, it's fascinating and will definitely help you write better apps.
If you are doing anything more complicated than a single JSP displaying some database results, please consider using a framework like Spring, Grails, etc... It will absolutely take you a bit more effort to get going, but it will save you so much time and effort down the road that I really recommend it. Besides, it's cool stuff :-)
Update April 2019
jQuery isn't needed for cookie reading/manipulation, so don't use the original answer below.
Go to https://github.com/js-cookie/js-cookie instead, and use the library there that doesn't depend on jQuery.
Basic examples:
// Set a cookie
Cookies.set('name', 'value');
// Read the cookie
Cookies.get('name') => // => 'value'
See the docs on github for details.
Before April 2019 (old)
See the plugin:
https://github.com/carhartl/jquery-cookie
You can then do:
$.cookie("test", 1);
To delete:
$.removeCookie("test");
Additionally, to set a timeout of a certain number of days (10 here) on the cookie:
$.cookie("test", 1, { expires : 10 });
If the expires option is omitted, then the cookie becomes a session cookie and is deleted when the browser exits.
To cover all the options:
$.cookie("test", 1, {
expires : 10, // Expires in 10 days
path : '/', // The value of the path attribute of the cookie
// (Default: path of page that created the cookie).
domain : 'jquery.com', // The value of the domain attribute of the cookie
// (Default: domain of page that created the cookie).
secure : true // If set to true the secure attribute of the cookie
// will be set and the cookie transmission will
// require a secure protocol (defaults to false).
});
To read back the value of the cookie:
var cookieValue = $.cookie("test");
You may wish to specify the path parameter if the cookie was created on a different path to the current one:
var cookieValue = $.cookie("test", { path: '/foo' });
UPDATE (April 2015):
As stated in the comments below, the team that worked on the original plugin has removed the jQuery dependency in a new project (https://github.com/js-cookie/js-cookie) which has the same functionality and general syntax as the jQuery version. Apparently the original plugin isn't going anywhere though.
SELECT REPLACE(CONVERT(varchar, MONTH(GetDate()) * 0.01), '0.', '')
Cacerts are details of trusted signing authorities who can issue certs. This what most of the browsers have due to which certs determined to be authentic. Keystone has your service related certs to authenticate clients.
A simple and elegant solution for the case where one needs to copy the dependencies to a target directory without using any other phases of maven (I found this very useful when working with Vaadin).
Complete pom example:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>groupId</groupId>
<artifactId>artifactId</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<phase>process-sources</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${targetdirectory}</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Then run mvn process-sources
The jar file dependencies can be found in /target/dependency
This is building upon the answer by @Ryu
His solution is great as long as you're in a country where dots are used as separators. By default NSNumberFormatter
uses the devices locale. Therefore this will fail in all countries where a comma is used as the default separator (including France as @PeterK. mentioned) if the number uses dots as separators (which is normally the case). To set the locale of this NSNumberFormatter to be US and thus use dots as separators replace the line
return NSNumberFormatter().numberFromString(self)?.doubleValue
with
let numberFormatter = NSNumberFormatter()
numberFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
return numberFormatter.numberFromString(self)?.doubleValue
Therefore the full code becomes
extension String {
func toDouble() -> Double? {
let numberFormatter = NSNumberFormatter()
numberFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
return numberFormatter.numberFromString(self)?.doubleValue
}
}
To use this, just call "Your text goes here".toDouble()
This will return an optional Double?
As @Ryu mentioned you can either force unwrap:
println("The value is \(myDouble!)") // prints: The value is 4.2
or use an if let
statement:
if let myDouble = myDouble {
println("The value is \(myDouble)") // prints: The value is 4.2
}
Expanding on Adam Rackis's answer - we can make the extension method generic simply like this:
public static TResult GetPropertyValue<TResult>(this object t, string propertyName)
{
object val = t.GetType().GetProperties().Single(pi => pi.Name == propertyName).GetValue(t, null);
return (TResult)val;
}
You can throw some error handling around that too if you like.
You could make the init
method return this
, and then chain the calls together, like this:
var userB = {
init: function(nameParam) {
this.id = MY_GLOBAL.nextId();
this.name = nameParam;
return this;
},
sayHello: function() {
console.log('Hello '+ this.name);
}
};
var bob = Object.create(userB).init('Bob');
Open Control Panel - Programs - Turn Windows Features on or off expand - Internet Information Services expand - World Wide Web Services expand - Application development Features check - ASP.Net
Its advisable you check other feature to avoid future problem that might not give direct error messages Please don't forget to mark this question as answered if it solves your problem for the purpose of others
Other answers state how to pass in the command line variables but not how to access them, so if you do:
--extra-vars "version=1.23.45 other_variable=foo"
In your yml file you assign these to scoped ansible variables by doing something like:
vars:
my_version: "{{ version }}"
my_other_variable: {{ other_variable }}
An alternative to using command line args is to utilise environmental variables that are already defined within your session, you can reference these within your ansible yml files like this:
vars:
my_version: "{{ lookup('env', 'version') }}"
my_other_variable: {{ lookup('env', 'other_variable') }}
In sass (scss):
button {
color: white;
cursor: pointer;
border-radius: 4px;
&:disabled{
opacity: 0.4;
&:hover{
opacity: 0.4; //this is what you want
}
}
&:hover{
opacity: 0.9;
}
}
The COM threading model is called an "apartment" model, where the execution context of initialized COM objects is associated with either a single thread (Single Thread Apartment) or many threads (Multi Thread Apartment). In this model, a COM object, once initialized in an apartment, is part of that apartment for the duration of its runtime.
The STA model is used for COM objects that are not thread safe. That means they do not handle their own synchronization. A common use of this is a UI component. So if another thread needs to interact with the object (such as pushing a button in a form) then the message is marshalled onto the STA thread. The windows forms message pumping system is an example of this.
If the COM object can handle its own synchronization then the MTA model can be used where multiple threads are allowed to interact with the object without marshalled calls.
This method does the trick.
boolean contains(char c, char[] array) {
for (char x : array) {
if (x == c) {
return true;
}
}
return false;
}
Example of usage:
class Main {
static boolean contains(char c, char[] array) {
for (char x : array) {
if (x == c) {
return true;
}
}
return false;
}
public static void main(String[] a) {
char[] charArray = new char[] {'h','e','l','l','o'};
if (!contains('q', charArray)) {
// Do something...
System.out.println("Hello world!");
}
}
}
Alternative way:
if (!String.valueOf(charArray).contains("q")) {
// do something...
}
Use fabs
instead of abs
to find absolute value of double
(or float
) data types. Include the <math.h>
header for fabs
function.
double d1 = fabs(-3.8951);
if you create a console application, console will stay opened until you close the application.
if you already creat an application and you dont know how to open a console, you can change the subsystem as Console(/Subsystem:Console) in project configurations -> linker -> system.
Using Windows 7 with Cygwin, I came across:
Compile failed: command 'gcc' failed with exit status 1
cc -I/usr/include/libxml2 -I/usr/include/libxml2 -c /tmp/xmlXPathInitZsgdMQ.c -o tmp/xmlXPathInitZsgdMQ.o
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: command 'gcc' failed with exit status 1
I fixed it by installing mingw64-x86_64-libxslt
The following returns the first word in cell A1 when separated by a space (works in Excel 2003):
=LEFT(A1, SEARCH(" ",A1,1))
from collections import Counter
from scipy import stats
labels = [0.9, 0.09, 0.1]
stats.entropy(list(Counter(labels).keys()), base=2)
Note that, for PIPE
being any command or sequence of commands, then:
if PIPE ; then
# do one thing if PIPE returned with zero status ($?=0)
else
# do another thing if PIPE returned with non-zero status ($?!=0), e.g. error
fi
For the record, [ expr ]
is a shell builtin† shorthand for test expr
.
Since grep
returns with status 0 in case of a match, and non-zero status in case of no matches, you can use:
if grep -lq '^MYSQL_ROLE=master' ; then
# do one thing
else
# do another thing
fi
Note the use of -l
which only cares about the file having at least one match (so that grep
returns as soon as it finds one match, without needlessly continuing to parse the input file.)
†on some platforms [ expr ]
is not a builtin, but an actual executable /bin/[
(whose last argument will be ]
), which is why [ expr ]
should contain blanks around the square brackets, and why it must be followed by one of the command list separators (;
, &&
, ||
, |
, &
, newline)
The date values from the text fields can be fetched by jquery's .val() Method like
var datestr1 = $('#datefield1-id').val();
var datestr2 = $('#datefield2-id').val();
I'd strongly recommend to parse the date strings before comparing them. Javascript's Date object has a parse()-Method, but it only supports US date formats (YYYY/MM/DD). It returns the milliseconds since the beginning of the unix epoch, so you can simply compare your values with > or <.
If you want different formats (e.g. ISO 8661), you need to resort to regular expressions or the free date.js library.
If you want to be super user-fiendly, you can use jquery ui datepickers instead of textfields. There is a datepicker variant that allows to enter date ranges:
http://www.filamentgroup.com/lab/date_range_picker_using_jquery_ui_16_and_jquery_ui_css_framework/
It depends on what compiler you're using.
For example, if you are using Visual C++ .NET 2010 Express, run Visual C++ 2010 Express Command Prompt from the start menu, and you can simply compile and run the code.
> cl /EHsc mycode.cpp
> mycode.exe
or from the regular command line, you can run vcvars32.bat
first to set up the environment. Alternatively search for setvcvars.cmd
(part of a FLOSS project) and use that to even locate the installed VS and have it call vcvars32.bat
for you.
Please check your compiler's manual for command lines.
Here is a complete working example. paste into empty C# console project:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
namespace TestTrapCtrlC {
public class Program {
static bool exitSystem = false;
#region Trap application termination
[DllImport("Kernel32")]
private static extern bool SetConsoleCtrlHandler(EventHandler handler, bool add);
private delegate bool EventHandler(CtrlType sig);
static EventHandler _handler;
enum CtrlType {
CTRL_C_EVENT = 0,
CTRL_BREAK_EVENT = 1,
CTRL_CLOSE_EVENT = 2,
CTRL_LOGOFF_EVENT = 5,
CTRL_SHUTDOWN_EVENT = 6
}
private static bool Handler(CtrlType sig) {
Console.WriteLine("Exiting system due to external CTRL-C, or process kill, or shutdown");
//do your cleanup here
Thread.Sleep(5000); //simulate some cleanup delay
Console.WriteLine("Cleanup complete");
//allow main to run off
exitSystem = true;
//shutdown right away so there are no lingering threads
Environment.Exit(-1);
return true;
}
#endregion
static void Main(string[] args) {
// Some biolerplate to react to close window event, CTRL-C, kill, etc
_handler += new EventHandler(Handler);
SetConsoleCtrlHandler(_handler, true);
//start your multi threaded program here
Program p = new Program();
p.Start();
//hold the console so it doesn’t run off the end
while (!exitSystem) {
Thread.Sleep(500);
}
}
public void Start() {
// start a thread and start doing some processing
Console.WriteLine("Thread started, processing..");
}
}
}
I stumbled upon this exception, and found out that I forgot to add a Main.
Check out if you have public static void main(String[] args)
correctly.
Good luck!
Use the query below to find out pending transaction.
If it returns a value, it means there is a pending transaction.
Here is the query:
select dbms_transaction.step_id from dual
;
References:
http://www.acehints.com/2011/07/how-to-check-pending-transaction-in.html
http://www.acehints.com/p/site-map.html
One possible way is to use .map()
method:
var all = $(".mbox").map(function() {
return this.innerHTML;
}).get();
console.log(all.join());
DEMO: http://jsfiddle.net/Y4bHh/
N.B. Please don't use document.write
. For testing purposes console.log
is the best way to go.
Paste this function in your Module and use it as like formula
Public Function format_date(t As String)
format_date = Format(t, "YYYY-MM-DD")
End Function
for example in Cell A1 apply this formula
=format_date(now())
it will return in YYYY-MM-DD format. Change any format (year month date) as your wish.
Your array is of byte
primitives, but you're trying to call a method on them.
You don't need to do anything explicit to convert a byte
to an int
, just:
int i=rno[0];
...since it's not a downcast.
Note that the default behavior of byte
-to-int
conversion is to preserve the sign of the value (remember byte
is a signed type in Java). So for instance:
byte b1 = -100;
int i1 = b1;
System.out.println(i1); // -100
If you were thinking of the byte
as unsigned (156) rather than signed (-100), as of Java 8 there's Byte.toUnsignedInt
:
byte b2 = -100; // Or `= (byte)156;`
int = Byte.toUnsignedInt(b2);
System.out.println(i2); // 156
Prior to Java 8, to get the equivalent value in the int
you'd need to mask off the sign bits:
byte b2 = -100; // Or `= (byte)156;`
int i2 = (b2 & 0xFF);
System.out.println(i2); // 156
Just for completeness #1: If you did want to use the various methods of Byte
for some reason (you don't need to here), you could use a boxing conversion:
Byte b = rno[0]; // Boxing conversion converts `byte` to `Byte`
int i = b.intValue();
Or the Byte
constructor:
Byte b = new Byte(rno[0]);
int i = b.intValue();
But again, you don't need that here.
Just for completeness #2: If it were a downcast (e.g., if you were trying to convert an int
to a byte
), all you need is a cast:
int i;
byte b;
i = 5;
b = (byte)i;
This assures the compiler that you know it's a downcast, so you don't get the "Possible loss of precision" error.
I've developed my own MySQL escape method in Java (if useful for anyone).
See class code below.
Warning: wrong if NO_BACKSLASH_ESCAPES SQL mode is enabled.
private static final HashMap<String,String> sqlTokens;
private static Pattern sqlTokenPattern;
static
{
//MySQL escape sequences: http://dev.mysql.com/doc/refman/5.1/en/string-syntax.html
String[][] search_regex_replacement = new String[][]
{
//search string search regex sql replacement regex
{ "\u0000" , "\\x00" , "\\\\0" },
{ "'" , "'" , "\\\\'" },
{ "\"" , "\"" , "\\\\\"" },
{ "\b" , "\\x08" , "\\\\b" },
{ "\n" , "\\n" , "\\\\n" },
{ "\r" , "\\r" , "\\\\r" },
{ "\t" , "\\t" , "\\\\t" },
{ "\u001A" , "\\x1A" , "\\\\Z" },
{ "\\" , "\\\\" , "\\\\\\\\" }
};
sqlTokens = new HashMap<String,String>();
String patternStr = "";
for (String[] srr : search_regex_replacement)
{
sqlTokens.put(srr[0], srr[2]);
patternStr += (patternStr.isEmpty() ? "" : "|") + srr[1];
}
sqlTokenPattern = Pattern.compile('(' + patternStr + ')');
}
public static String escape(String s)
{
Matcher matcher = sqlTokenPattern.matcher(s);
StringBuffer sb = new StringBuffer();
while(matcher.find())
{
matcher.appendReplacement(sb, sqlTokens.get(matcher.group(1)));
}
matcher.appendTail(sb);
return sb.toString();
}
A Unix timestamp is simply the number of seconds since January the first 1970, so to add 24 hours to a Unix timestamp we just add the number of seconds in 24 hours. (24 * 60 *60)
time() + 24*60*60;
You can use this configuration for cuda 10.0 (10.1 does not work as of 3/18), this runs for me:
Install version tensorflow gpu:
pip install tensorflow-gpu==1.4.0
PHP can be easily utilized for reading bar codes printed on paper documents. Connecting manual barcode reader to the computer via USB significantly extends usability of PHP (or any other web programming language) into tasks involving document and product management, like finding a book records in the database or listing all bills for a particular customer.
Following sections briefly describe process of connecting and using manual bar code reader with PHP.
The usage of bar code scanners described in this article are in the same way applicable to any web programming language, such as ASP, Python or Perl. This article uses only PHP since all tests have been done with PHP applications.
What is a bar code reader (scanner)
Bar code reader is a hardware pluggable into computer that sends decoded bar code strings into computer. The trick is to know how to catch that received string. With PHP (and any other web programming language) the string will be placed into focused input HTML element in browser. Thus to catch received bar code string, following must be done:
just before reading the bar code, proper input element, such as INPUT TEXT FIELD must be focused (mouse cursor is inside of the input field). once focused, start reading the code when the code is recognized (bar code reader usually shortly beeps), it is send to the focused input field. By default, most of bar code readers will append extra special character to decoded bar code string called CRLF (ENTER). For example, if decoded bar code is "12345AB", then computer will receive "12345ABENTER". Appended character ENTER (or CRLF) emulates pressing the key ENTER causing instant submission of the HTML form:
<form action="search.php" method="post">
<input name="documentID" onmouseover="this.focus();" type="text">
</form>
Choosing the right bar code scanner
When choosing bar code reader, one should consider what types of bar codes will be read with it. Some bar codes allow only numbers, others will not have checksum, some bar codes are difficult to print with inkjet printers, some barcode readers have narrow reading pane and cannot read for example barcodes with length over 10 cm. Most of barcode readers support common barcodes, such as EAN8, EAN13, CODE 39, Interleaved 2/5, Code 128 etc.
For office purposes, the most suitable barcodes seem to be those supporting full range of alphanumeric characters, which might be:
Other important things to note:
Installing scanner drivers
Installing manual bar code reader requires installing drivers for your particular operating system and should be normally supplied with purchased bar code reader.
Once installed and ready, bar code reader turns on signal LED light. Reading the barcode starts with pressing button for reading.
Scanning the barcode - how does it work?
STEP 1 - Focused input field ready for receiving character stream from bar code scanner:
STEP 2 - Received barcode string from bar code scanner is immediatelly submitted for search into database, which creates nice "automated" effect:
STEP 3 - Results returned after searching the database with submitted bar code:
Conclusion
It seems, that utilization of PHP (and actually any web programming language) for scanning the bar codes has been quite overlooked so far. However, with natural support of emulated keypress (ENTER/CRLF) it is very easy to automate collecting & processing recognized bar code strings via simple HTML (GUI) fomular.
The key is to understand, that recognized bar code string is instantly sent to the focused HTML element, such as INPUT text field with appended trailing character ASCII 13 (=ENTER/CRLF, configurable option), which instantly sends input text field with populated received barcode as a HTML formular to any other script for further processing.
Reference: http://www.synet.sk/php/en/280-barcode-reader-scanner-in-php
Hope this helps you :)
Try this code to download an image from a URL on Android:
DownloadManager downloadManager = (DownloadManager)getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri = Uri.parse(imageName);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
Long reference = downloadManager.enqueue(request);
session_start();
if(isset($_SESSION['current'])){
$_SESSION['oldlink']=$_SESSION['current'];
}else{
$_SESSION['oldlink']='no previous page';
}
$_SESSION['current']=$_SERVER['PHP_SELF'];
Maybe this is what you're looking for? It will remember the old link/page you're coming from (within your website).
Put that piece on top of each page.
If you want to make it 'refresh proof' you can add another check:
if(isset($_SESSION['current']) && $_SESSION['current']!=$_SERVER['PHP_SELF'])
This will make the page not remember itself.
UPDATE: Almost the same as @Brandon though... Just use a php variable, I know this looks like a security risk, but when done correct it isn't.
<a href="home.php?a=register">Register Now!</a>
PHP:
if(isset($_GET['a']) /*you can validate the link here*/){
$_SESSION['link']=$_GET['a'];
}
Why even store the GET in a session? Just use it. Please tell me why you do not want to use GET. « Validate for more security. I maybe can help you with a better script.
Yes, querySelectorAll
does take a group of selectors:
form, p, legend
I've had this same problem, and I wrote a one-liner in shell to do it.
rm -rf $(mvn help:evaluate -Dexpression=settings.localRepository\
-Dorg.slf4j.simpleLogger.defaultLogLevel=WARN -B \
-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn | grep -vF '[INFO]')/*
I did it as a one-liner because I wanted to have a Jenkins-project to simply run this whenever I needed, so I wouldn't have to log on to stuff, etc. If you allow yourself a shell-script for it, you can write it cleaner:
#!/usr/bin/env bash
REPOSITORY=$(mvn help:evaluate \
-Dexpression=settings.localRepository \
-Dorg.slf4j.simpleLogger.defaultLogLevel=WARN \
-Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn \
--batch-mode \
| grep -vF '[INFO]')
rm -rf $REPOSITORY/*
Should work, but I have not tested all of that script. (I've tested the first command, but not the whole script.) This approach has the downside of running a large complicated command first. It is idempotent, so you can test it out for yourself. The deletion is its own command afterwards, and this lets you try it all out and check that it does what you think it does, because you shouldn't trust deletion commands without verification. However, it is smart for one good reason: It's portable. It respects your settings.xml file. If you're running this command, and tell maven to use a specific xml file (the -s or --settings argument), this will still work. So you don't have to fiddle with making sure everything is the same everywhere.
It's a bit wieldy, but it's a decent way of doing business, IMO.
This function convert wildcard to regexp and make test (it supports .
and *
wildcharts)
function wildTest(wildcard, str) {
let w = wildcard.replace(/[.+^${}()|[\]\\]/g, '\\$&'); // regexp escape
const re = new RegExp(`^${w.replace(/\*/g,'.*').replace(/\?/g,'.')}$`,'i');
return re.test(str); // remove last 'i' above to have case sensitive
}
function wildTest(wildcard, str) {_x000D_
let w = wildcard.replace(/[.+^${}()|[\]\\]/g, '\\$&'); // regexp escape _x000D_
const re = new RegExp(`^${w.replace(/\*/g,'.*').replace(/\?/g,'.')}$`,'i');_x000D_
return re.test(str); // remove last 'i' above to have case sensitive_x000D_
}_x000D_
_x000D_
_x000D_
// Example usage_x000D_
_x000D_
let arr = ["birdBlue", "birdRed", "pig1z", "pig2z", "elephantBlua" ];_x000D_
_x000D_
let resultA = arr.filter( x => wildTest('biRd*', x) );_x000D_
let resultB = arr.filter( x => wildTest('p?g?z', x) );_x000D_
let resultC = arr.filter( x => wildTest('*Blu?', x) );_x000D_
_x000D_
console.log('biRd*',resultA);_x000D_
console.log('p?g?z',resultB);_x000D_
console.log('*Blu?',resultC);
_x000D_
Look in C:\Program Files\dotnet\shared\Microsoft.NETCore.App
to see which versions of the runtime have directories there. Source.
A lot of the answers here confuse the SDK with the Runtime, which are different.
I guess what you're trying to do, is to keep the header fixed and to scroll the body content. You can scroll the content into 2 directions:
tbody
tag, because assigning display:block
or display:inline-block
will break the layout of the table.Here's a solution using divs
: JSFiddle
HTML:
<div class="wrap_header">
<div class="column">
Name
</div>
<div class="column">
Phone
</div>
<div class="clearfix"></div>
</div>
<div class="wrap_body">
<div class="sliding_wrapper">
<div class="serie">
<div class="cell">
AAAAAA
</div>
<div class="cell">
323232
</div>
<div class="clearfix"></div>
</div>
<div class="serie">
<div class="cell">
BBBBBB
</div>
<div class="cell">
323232
</div>
<div class="clearfix"></div>
</div>
<div class="serie">
<div class="cell">
CCCCCC
</div>
<div class="cell">
3435656
</div>
<div class="clearfix"></div>
</div>
</div>
</div>
CSS:
.wrap_header{width:204px;}
.sliding_wrapper,
.wrap_body {width:221px;}
.sliding_wrapper {overflow-y:scroll; overflow-x:none;}
.sliding_wrapper,
.wrap_body {height:45px;}
.wrap_header,
.wrap_body {overflow:hidden;}
.column {width:100px; float:left; border:1px solid red;}
.cell {width:100px; float:left; border:1px solid red;}
/**
* @info Clearfix: clear all the floated elements
*/
.clearfix:after {
visibility:hidden;
display:block;
font-size:0;
content:" ";
clear:both;
height:0;
}
.clearfix {display:inline-table;}
/**
* @hack Display the Clearfix as a block element
* @hackfor Every browser except IE for Macintosh
*/
/* Hides from IE-mac \*/
* html .clearfix {height:1%;}
.clearfix {display:block;}
/* End hide from IE-mac */
Explanation:
You have a sliding wrapper
which will contain all the data.
Note the following:
.wrap_header{width:204px;}
.sliding_wrapper,
.wrap_body {width:221px;}
There's a difference of 17px because we need to take into consideration the width of the scrollbar.
To save text from the console: run the analysis and then choose (Windows) "File>Save to File".
In Ubuntu 16.04.3 LTS, the next command works for me:
exit
Then I've login again.
// Example: Adding a converter to a column (C#)
Style styleReading = new Style(typeof(TextBlock));
Setter s = new Setter();
s.Property = TextBlock.ForegroundProperty;
Binding b = new Binding();
b.RelativeSource = RelativeSource.Self;
b.Path = new PropertyPath(TextBlock.TextProperty);
b.Converter = new ReadingForegroundSetter();
s.Value = b;
styleReading.Setters.Add(s);
col.ElementStyle = styleReading;
I'm afraid it's the best solution that I can think of. But you can use reserve() to pre-allocate the minimum required memory in advance to speed up things a bit. You'll end up with a new string that will probably be shorter but that takes up the same amount of memory, but you'll avoid reallocations.
EDIT: Depending on your situation, this may incur less overhead than jumbling characters around.
You should try different approaches and see what is best for you: you might not have any performance issues at all.
Just for the record, it's possible to configure Maven's Simple SLF4J logging directly in the command line to output only what we need by configuring:
org.slf4j.simpleLogger.defaultLogLevel=WARN
andorg.slf4j.simpleLogger.log.org.apache.maven.plugins.help=INFO
as documented at http://www.slf4j.org/api/org/slf4j/impl/SimpleLogger.html
MAVEN_OPTS="\
-Dorg.slf4j.simpleLogger.defaultLogLevel=WARN \
-Dorg.slf4j.simpleLogger.log.org.apache.maven.plugins.help=INFO" \
mvn help:evaluate -o -Dexpression=project.version
As a result, one can run simply tail -1
and get:
$ MAVEN_OPTS="\
-Dorg.slf4j.simpleLogger.defaultLogLevel=WARN \
-Dorg.slf4j.simpleLogger.log.org.apache.maven.plugins.help=INFO" \
mvn help:evaluate -o -Dexpression=project.version | tail -1
1.0.0-SNAPSHOT
Note that this is a one-liner. MAVEN_OPTS
are being rewritten only for this particular mvn
execution.
Connect to database:
Method 1 : enter to db : sudo -u postgres psql
Connect to db : \c dbname
Method 2 : directly connect to db : sudo -u postgres psql -d my_database_name
Using POST
function DoAction( id, name )
{
$.ajax({
type: "POST",
url: "someurl.php",
data: "id=" + id + "&name=" + name,
success: function(msg){
alert( "Data Saved: " + msg );
}
});
}
Using GET
function DoAction( id, name )
{
$.ajax({
type: "GET",
url: "someurl.php",
data: "id=" + id + "&name=" + name,
success: function(msg){
alert( "Data Saved: " + msg );
}
});
}
EDIT:
A, perhaps, better way to do this that would work (using GET) if javascript were not enabled would be to generate the URL for the href, then use a click handler to call that URL via ajax instead.
<a href="/someurl.php?id=1&name=Jose" class="ajax-link"> Click </a>
<a href="/someurl.php?id=2&name=Juan" class="ajax-link"> Click </a>
<a href="/someurl.php?id=3&name=Pedro" class="ajax-link"> Click </a>
...
<a href="/someurl.php?id=n&name=xxx" class="ajax-link"> Click </a>
<script type="text/javascript">
$(function() {
$('.ajax-link').click( function() {
$.get( $(this).attr('href'), function(msg) {
alert( "Data Saved: " + msg );
});
return false; // don't follow the link!
});
});
</script>
If you are using Python2.6 or newer, it's convenient to use socket.create_connection
sock = socket.create_connection(address, timeout=10)
sock.settimeout(None)
fileobj = sock.makefile('rb', 0)
I improved Salselvaprabu's answer in several ways:
Call it like this:
Test-Port example.com 999
Test-Port 192.168.0.1 80
function Test-Port($hostname, $port)
{
# This works no matter in which form we get $host - hostname or ip address
try {
$ip = [System.Net.Dns]::GetHostAddresses($hostname) |
select-object IPAddressToString -expandproperty IPAddressToString
if($ip.GetType().Name -eq "Object[]")
{
#If we have several ip's for that address, let's take first one
$ip = $ip[0]
}
} catch {
Write-Host "Possibly $hostname is wrong hostname or IP"
return
}
$t = New-Object Net.Sockets.TcpClient
# We use Try\Catch to remove exception info from console if we can't connect
try
{
$t.Connect($ip,$port)
} catch {}
if($t.Connected)
{
$t.Close()
$msg = "Port $port is operational"
}
else
{
$msg = "Port $port on $ip is closed, "
$msg += "You may need to contact your IT team to open it. "
}
Write-Host $msg
}
Reader they show at http://www.webqr.com/index.html works like a charm, but literaly, you need the one on the webpage, the github version it's really hard to make it work, however, it is possible. The best way to go is reverse-engineer the example shown at the webpage.
However, to edit and get the full potential out of it, it's not so easy. At some point I may post the stripped-down reverse-engineered QR reader, but in the meantime have some fun hacking the code.
Happy coding.
The highly regarded Joda Time library is also worth a look. This is basis for the new date and time api that is pencilled in for Java 7. The design is neat, intuitive, well documented and avoids a lot of the clumsiness of the original java.util.Date
/ java.util.Calendar
classes.
Joda's DateFormatter
can parse a String to a Joda DateTime
.
Not sure why this thread got necroed; but here is a 2014 approved answer, which should be far faster:
import numpy as np
data = np.random.rand(100)
bins = 10
slices = np.linspace(0, 100, bins+1, True).astype(np.int)
counts = np.diff(slices)
mean = np.add.reduceat(data, slices[:-1]) / counts
print mean