Here's a partial solution using xml2. Breaking the solution up into smaller pieces generally makes it easier to ensure everything is lined up:
library(xml2)
data <- read_xml("http://forecast.weather.gov/MapClick.php?lat=29.803&lon=-82.411&FcstType=digitalDWML")
# Point locations
point <- data %>% xml_find_all("//point")
point %>% xml_attr("latitude") %>% as.numeric()
point %>% xml_attr("longitude") %>% as.numeric()
# Start time
data %>%
xml_find_all("//start-valid-time") %>%
xml_text()
# Temperature
data %>%
xml_find_all("//temperature[@type='hourly']/value") %>%
xml_text() %>%
as.integer()
I really like Tovask's answer but it doesn't work due to the function having the name download
(this answer explains why). I also don't see the point in replacing "data:image/..." with "data:application/...".
The following code has been tested in Chrome and Firefox and seems to work fine in both.
JavaScript:
function prepDownload(a, canvas, name) {
a.download = name
a.href = canvas.toDataURL()
}
HTML:
<a href="#" onclick="prepDownload(this, document.getElementById('canvasId'), 'imgName.png')">Download</a>
<canvas id="canvasId"></canvas>
<?php
$variable1 = "foo";
$variable2 = "bar";
header('Location: http://linkhere.com?fieldname1=$variable1&fieldname2=$variable2&fieldname3=$variable3);
?>
This works without any quotations.
I tested bits and pieces of the following, but not the complete rule set in its entirety, so if you run into trouble with it let me know and I'll dig around a bit more. However, assuming I got everything correct, you could try something like the following:
RewriteEngine On
# Check if this is the noredirect query string
RewriteCond %{QUERY_STRING} (^|&)noredirect=true(&|$)
# Set a cookie, and skip the next rule
RewriteRule ^ - [CO=mredir:0:%{HTTP_HOST},S]
# Check if this looks like a mobile device
# (You could add another [OR] to the second one and add in what you
# had to check, but I believe most mobile devices should send at
# least one of these headers)
RewriteCond %{HTTP:x-wap-profile} !^$ [OR]
RewriteCond %{HTTP:Profile} !^$
# Check if we're not already on the mobile site
RewriteCond %{HTTP_HOST} !^m\.
# Check to make sure we haven't set the cookie before
RewriteCond %{HTTP:Cookie} !\smredir=0(;|$)
# Now redirect to the mobile site
RewriteRule ^ http://m.example.org%{REQUEST_URI} [R,L]
Don't know if it will help, but you can try simulating a submit button click, instead of directly submitting the form. I have the following code in production, and it works fine:
$('.input').keypress(function(e) {
if(e.which == 13) {
jQuery(this).blur();
jQuery('#submit').focus().click();
}
});
Note: jQuery('#submit').focus() makes the button animate when enter is pressed.
I was struggling with Outlook and Office365. Surprisingly the thing that seemed to work was:
<table align='center' style='text-align:center'>
<tr>
<td align='center' style='text-align:center'>
<!-- AMAZING CONTENT! -->
</td>
</tr>
</table>
I only listed some of the key things that resolved my Microsoft email issues.
Might I add that building an email that looks nice on all emails is a pain. This website was super nice for testing: https://putsmail.com/
It allows you to list all the emails you'd like to send your test email to. You can paste your code right into the window, edit, send, and resend. It helped me a ton.
Can you test with surefire 2.6 and either configure Surefire with <testFailureIgnore>true</testFailureIgnore>
.
Or on the command line:
mvn install -Dmaven.test.failure.ignore=true
Using a subshell substitution to parse the words undoes all the work you are doing to put spaces together.
Try instead:
cat CSV_file | sed -n 1'p' | tr ',' '\n' | while read word; do
echo $word
done
That also increases parallelism. Using a subshell as in your question forces the entire subshell process to finish before you can start iterating over the answers. Piping to a subshell (as in my answer) lets them work in parallel. This matters only if you have many lines in the file, of course.
Your missing a ' after night. right here getElementById('Night
This just worked for me
new Date('foo') == 'Invalid Date'; //is true
However this didn't work
new Date('foo') === 'Invalid Date'; //is false
In swift 4.2 I used following code to show and hide code using NSNotification
@objc func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo? [UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
let keyboardheight = keyboardSize.height
print(keyboardheight)
}
}
Object.keys(myObj).length === 0;
As there is need to just check if Object is empty it will be better to directly call a native method Object.keys(myObj).length which returns the array of keys by internally iterating with for..in loop.As Object.hasOwnProperty
returns a boolean result based on the property present in an object which itself iterates with for..in loop and will have time complexity O(N2).
On the other hand calling a UDF which itself has above two implementations or other will work fine for small object but will block the code which will have severe impact on overall perormance if Object size is large unless nothing else is waiting in the event loop.
You can use
git reset
to undo the recently added local files
git reset file_name
to undo the changes for a specific file
You can't: It's a security feature in all modern browsers.
For IE8, it's off by default, but can be reactivated using a security setting:
When a file is selected by using the input type=file object, the value of the value property depends on the value of the "Include local directory path when uploading files to a server" security setting for the security zone used to display the Web page containing the input object.
The fully qualified filename of the selected file is returned only when this setting is enabled. When the setting is disabled, Internet Explorer 8 replaces the local drive and directory path with the string C:\fakepath\ in order to prevent inappropriate information disclosure.
In all other current mainstream browsers I know of, it is also turned off. The file name is the best you can get.
More detailed info and good links in this question. It refers to getting the value server-side, but the issue is the same in JavaScript before the form's submission.
Ahem, because 22 is the port number for ssh and has been for ages?
To merge the two arrays on id
, assuming the arrays are equal length:
arr1.map(item => ({
...item,
...arr2.find(({ id }) => id === item.id),
}));
Do the lines themselves contain any index information? If the content of each line was something like "<line index>:Data
", then the seek()
approach could be used to do a binary search through the file, even if the amount of Data
is variable. You'd seek to the midpoint of the file, read a line, check whether its index is higher or lower than the one you want, etc.
Otherwise, the best you can do is just readlines()
. If you don't want to read all 15MB, you can use the sizehint
argument to at least replace a lot of readline()
s with a smaller number of calls to readlines()
.
For GNU/Linux & MacOS (or generally UNIX like) systems, I've used below method which works fine:
private int tryGetPid(Process process)
{
if (process.getClass().getName().equals("java.lang.UNIXProcess"))
{
try
{
Field f = process.getClass().getDeclaredField("pid");
f.setAccessible(true);
return f.getInt(process);
}
catch (IllegalAccessException | IllegalArgumentException | NoSuchFieldException | SecurityException e)
{
}
}
return 0;
}
I think the best place to look is the Super POM.
As an example, at the time of writing, the linked reference shows some of the properties between lines 32 - 48.
The interpretation of this is to follow the XPath as a .
delimited property.
So, for example:
${project.build.testOutputDirectory}
== ${project.build.directory}/test-classes
And:
${project.build.directory}
== ${project.basedir}/target
Thus combining them, we find:
${project.build.testOutputDirectory}
== ${project.basedir}/target/test-classes
(To reference the resources directory(s), see this stackoverflow question)
<project>
<modelVersion>4.0.0</modelVersion>
.
.
.
<build>
<directory>${project.basedir}/target</directory>
<outputDirectory>${project.build.directory}/classes</outputDirectory>
<finalName>${project.artifactId}-${project.version}</finalName>
<testOutputDirectory>${project.build.directory}/test-classes</testOutputDirectory>
<sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
<scriptSourceDirectory>src/main/scripts</scriptSourceDirectory>
<testSourceDirectory>${project.basedir}/src/test/java</testSourceDirectory>
<resources>
<resource>
<directory>${project.basedir}/src/main/resources</directory>
</resource>
</resources>
<testResources>
<testResource>
<directory>${project.basedir}/src/test/resources</directory>
</testResource>
</testResources>
.
.
.
</build>
.
.
.
</project>
Custom button image without setting button frame:
You can use init(image: UIImage?, style: UIBarButtonItemStyle, target: Any?, action: Selector?)
to initializes a new item using the specified image and other properties.
let button1 = UIBarButtonItem(image: UIImage(named: "imagename"), style: .plain, target: self, action: Selector("action")) // action:#selector(Class.MethodName) for swift 3
self.navigationItem.rightBarButtonItem = button1
Check this Apple Doc. reference
FOR Swift 3.0
let btn1 = UIButton(type: .custom)
btn1.setImage(UIImage(named: "imagename"), for: .normal)
btn1.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btn1.addTarget(self, action: #selector(Class.Methodname), for: .touchUpInside)
let item1 = UIBarButtonItem(customView: btn1)
let btn2 = UIButton(type: .custom)
btn2.setImage(UIImage(named: "imagename"), for: .normal)
btn2.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
btn2.addTarget(self, action: #selector(Class.MethodName), for: .touchUpInside)
let item2 = UIBarButtonItem(customView: btn2)
self.navigationItem.setRightBarButtonItems([item1,item2], animated: true)
FOR Swift 2.0
and older
let btnName = UIButton()
btnName.setImage(UIImage(named: "imagename"), forState: .Normal)
btnName.frame = CGRectMake(0, 0, 30, 30)
btnName.addTarget(self, action: Selector("action"), forControlEvents: .TouchUpInside)
//.... Set Right/Left Bar Button item
let rightBarButton = UIBarButtonItem()
rightBarButton.customView = btnName
self.navigationItem.rightBarButtonItem = rightBarButton
Or simply use init(customView:) like
let rightBarButton = UIBarButtonItem(customView: btnName) self.navigationItem.rightBarButtonItem = rightBarButton
For System UIBarButtonItem
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: Selector("btnOpenCamera"))
self.navigationItem.rightBarButtonItem = camera
For set more then 1 items use rightBarButtonItems
or for left side leftBarButtonItems
let btn1 = UIButton()
btn1.setImage(UIImage(named: "img1"), forState: .Normal)
btn1.frame = CGRectMake(0, 0, 30, 30)
btn1.addTarget(self, action: Selector("action1:"), forControlEvents: .TouchUpInside)
let item1 = UIBarButtonItem()
item1.customView = btn1
let btn2 = UIButton()
btn2.setImage(UIImage(named: "img2"), forState: .Normal)
btn2.frame = CGRectMake(0, 0, 30, 30)
btn2.addTarget(self, action: Selector("action2:"), forControlEvents: .TouchUpInside)
let item2 = UIBarButtonItem()
item2.customView = btn2
self.navigationItem.rightBarButtonItems = [item1,item2]
Using setLeftBarButtonItem
or setRightBarButtonItem
let btn1 = UIButton()
btn1.setImage(UIImage(named: "img1"), forState: .Normal)
btn1.frame = CGRectMake(0, 0, 30, 30)
btn1.addTarget(self, action: Selector("action1:"), forControlEvents: .TouchUpInside)
self.navigationItem.setLeftBarButtonItem(UIBarButtonItem(customView: btn1), animated: true);
For swift >= 2.2 action should be
#selector(Class.MethodName)
... for e.g.btnName.addTarget(self, action: #selector(Class.MethodName), forControlEvents: .TouchUpInside)
You may use pure Node.js and debug the application in the console if you wish.
For example let's create a dummy debug.js
file that we want to debug and put breakpoints in it (debugger
statement):
let a = 5;_x000D_
debugger;_x000D_
_x000D_
a *= 2;_x000D_
debugger;_x000D_
_x000D_
let b = 10;_x000D_
debugger;_x000D_
_x000D_
let c = a + b;_x000D_
debugger;_x000D_
_x000D_
console.log(c);
_x000D_
Then you may run this file for debugging using inspect
command:
node inspect debug.js
This will launch the debugger in the console and you'll se the output that is similar to:
< Debugger listening on ws://127.0.0.1:9229/6da25f21-63a0-480d-b128-83a792b516fc
< For help, see: https://nodejs.org/en/docs/inspector
< Debugger attached.
Break on start in debug.js:1
> 1 (function (exports, require, module, __filename, __dirname) { let a = 5;
2 debugger;
3
You may notice here that file execution has been stopped at first line. From this moment you may go through the file step by step using following commands (hot-keys):
cont
to continue,next
to go to the next breakpoint,in
to step in,out
to step outpause
to pause itLet's type cont
several times and see how we get from breakpoint to breakpoint:
debug> next
break in misc/debug.js:1
> 1 (function (exports, require, module, __filename, __dirname) { let a = 5;
2 debugger;
3
debug> next
break in misc/debug.js:2
1 (function (exports, require, module, __filename, __dirname) { let a = 5;
> 2 debugger;
3
4 a *= 2;
debug> next
break in misc/debug.js:4
2 debugger;
3
> 4 a *= 2;
5 debugger;
6
What we may do now is we may check the variable values at this point by writing repl
command. This will allow you to write variable name and see its value:
debug> repl
Press Ctrl + C to leave debug repl
> a
5
> b
undefined
> c
undefined
>
You may see that we have a = 5
at this moment and b
and c
are undefined.
Of course for more complex debugging you may want to use some external tools (IDE, browser). You may read more here.
Had this error when I had deleted a table from the database. Solved it by right clicking on EDMX diagram, going to Properties, selecting the table from the list in the Properties window, and deleting it (using delete key) from the diagram.
Pyromancer's answer seems pretty good to me, but maybe you wanted:
DateTime.Now.Millisecond
But if you are comparing dates, TimeSpan is the way to go.
==
is a bash-specific alias for =
and it performs a string (lexical) comparison instead of a numeric comparison. eq
being a numeric comparison of course.
Finally, I usually prefer to use the form if [ "$a" == "$b" ]
In your package.json change the devkit builder.
"@angular-devkit/build-angular": "^0.800.1",
to
"@angular-devkit/build-angular": "^0.10.0",
it works for me.
good luck.
I had installed my Git in: C:\Users\_myuserfolder_\AppData\Local\Programs\Git
This question is quite old and the problem seems to have been solved, but if only to remind myself next time I am facing this problem, here is another solution (tested only on Windows 10, though).
The shortcut for the jupyter notebook (be it from the start menu, a desktop shortcut or pinned to the taskbar) calls a number of Scripts (presumably to initialize the jupyter notebook etc.), which are written in the Target text field from the shortcut's Properties window
.
Appending
--notebook-dir='C:/Your/Desired/Start/Directory/'
should start the notebook in the specified directory (as @Victor O pointed out, it cannot be a drive, but has to be a folder).
If that doesn't do the trick, it can't hurt to also add the same directory to the Start in field.
Note: I used forward-slashes in the Target field and back-slashes in the Start in field. Feel free to change that up, if you are curious which combinations are working.
Also, this was not my idea, but I forgot where it came from (I checked the shortcut from my previous installation, because I was sure not to have tried anything from this page, but the proposed way from the link the OP provided.). If anyone wants to supply the link, please do so.
Sorry if I can't add any fundamental research to this, but the solution worked for me on four separate systems and is fairly simple to implement.
Try using rowMeans
:
z$mean=rowMeans(z[,c("x", "y")], na.rm=TRUE)
w x y mean
1 5 1 1 1
2 6 2 2 2
3 7 3 3 3
4 8 4 NA 4
My solution to this problem was to use the $() sub-expression block.
Add-Type -Language CSharp @"
public class Thing{
public string Name;
}
"@;
$x = New-Object Thing
$x.Name = "Bill"
Write-Output "My name is $($x.Name)"
Write-Output "This won't work right: $x.Name"
Gives:
My name is Bill
This won't work right: Thing.Name
I think if you are looking for fullscreen only, no need to set geometry or maxsize etc.
You just need to do this:
-If you are working on ubuntu:
root=tk.Tk()
root.attributes('-zoomed', True)
-and if you are working on windows:
root.state('zoomed')
Now for toggling between fullscreen, for minimising it to taskbar you can use:
Root.iconify()
I just tried to use ranges from bigger to smaller amount and got the result I didn't expect:
irb(main):007:0> Array(1..5)
=> [1, 2, 3, 4, 5]
irb(main):008:0> Array(5..1)
=> []
That's because of ranges implementations.
So I had to use the following option:
(1..5).to_a.reverse
There are actually two ways to add a favicon to a website.
<link rel="icon">
Simply add the following code to the <head>
element:
<link rel="icon" href="http://example.com/favicon.png">
PNG favicons are supported by most browsers, except IE <= 10. For backwards compatibility, you can use ICO favicons.
Note that you don't have to precede icon
in rel
attribute with shortcut
anymore. From MDN Link types:
The
shortcut
link type is often seen beforeicon
, but this link type is non-conforming, ignored and web authors must not use it anymore.
favicon.ico
in the root directoryFrom another SO answer (by @mercator):
All modern browsers (tested with Chrome 4, Firefox 3.5, IE8, Opera 10 and Safari 4) will always request a
favicon.ico
unless you've specified a shortcut icon via<link>
.
So all you have to do is to make the /favicon.ico
request to your website return your favicon. This option unfortunately doesn't allow you to use a PNG icon.
See also favicon.png vs favicon.ico - why should I use PNG instead of ICO?
You can use finish()
method or you can use:
android:noHistory="true"
And then there is no need to call finish()
anymore.
<activity android:name=".ClassName" android:noHistory="true" ... />
Following short code can help:
df3 = df3.rename(columns={c: c.replace(' ', '') for c in df3.columns})
Remove spaces from columns.
Here's a solution that avoids the (often slow) rbind
call:
existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4))
r <- 3
newrow <- seq(4)
insertRow <- function(existingDF, newrow, r) {
existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),]
existingDF[r,] <- newrow
existingDF
}
> insertRow(existingDF, newrow, r)
V1 V2 V3 V4
1 1 6 11 16
2 2 7 12 17
3 1 2 3 4
4 3 8 13 18
5 4 9 14 19
6 5 10 15 20
If speed is less important than clarity, then @Simon's solution works well:
existingDF <- rbind(existingDF[1:r,],newrow,existingDF[-(1:r),])
> existingDF
V1 V2 V3 V4
1 1 6 11 16
2 2 7 12 17
3 3 8 13 18
4 1 2 3 4
41 4 9 14 19
5 5 10 15 20
(Note we index r
differently).
And finally, benchmarks:
library(microbenchmark)
microbenchmark(
rbind(existingDF[1:r,],newrow,existingDF[-(1:r),]),
insertRow(existingDF,newrow,r)
)
Unit: microseconds
expr min lq median uq max
1 insertRow(existingDF, newrow, r) 660.131 678.3675 695.5515 725.2775 928.299
2 rbind(existingDF[1:r, ], newrow, existingDF[-(1:r), ]) 801.161 831.7730 854.6320 881.6560 10641.417
Benchmarks
As @MatthewDowle always points out to me, benchmarks need to be examined for the scaling as the size of the problem increases. Here we go then:
benchmarkInsertionSolutions <- function(nrow=5,ncol=4) {
existingDF <- as.data.frame(matrix(seq(nrow*ncol),nrow=nrow,ncol=ncol))
r <- 3 # Row to insert into
newrow <- seq(ncol)
m <- microbenchmark(
rbind(existingDF[1:r,],newrow,existingDF[-(1:r),]),
insertRow(existingDF,newrow,r),
insertRow2(existingDF,newrow,r)
)
# Now return the median times
mediansBy <- by(m$time,m$expr, FUN=median)
res <- as.numeric(mediansBy)
names(res) <- names(mediansBy)
res
}
nrows <- 5*10^(0:5)
benchmarks <- sapply(nrows,benchmarkInsertionSolutions)
colnames(benchmarks) <- as.character(nrows)
ggplot( melt(benchmarks), aes(x=Var2,y=value,colour=Var1) ) + geom_line() + scale_x_log10() + scale_y_log10()
@Roland's solution scales quite well, even with the call to rbind
:
5 50 500 5000 50000 5e+05
insertRow2(existingDF, newrow, r) 549861.5 579579.0 789452 2512926 46994560 414790214
insertRow(existingDF, newrow, r) 895401.0 905318.5 1168201 2603926 39765358 392904851
rbind(existingDF[1:r, ], newrow, existingDF[-(1:r), ]) 787218.0 814979.0 1263886 5591880 63351247 829650894
Plotted on a linear scale:
And a log-log scale:
Komodo is wonderful, and it runs on OS X; they have a free version, Komodo Edit.
UPDATE from 2015: I've switched to PHPStorm from Jetbrains, the same folks that built IntelliJ IDEA and Resharper. It's better. Not just better. It's well worth the money.
It may be important to point out the current stable, unstable and dev versions of each (including date):
http://pecl.php.net/package/apc
dev dev 2013-09-12
3.1.14 beta 2013-01-02
3.1.9 stable 2011-05-14
dev/3.2 dev 2013-12-13
dev/3.1 dev 2013-11-05
3.1.0 stable 2013-10-10
3.0.4 stable 2013-10-10
https://github.com/eaccelerator/eaccelerator
dev dev 2012-08-16
0.9.6-rc1 unstable 2010-01-26
0.9.5.1 stable 2007-05-16
This is based off another answer on this page, https://stackoverflow.com/a/21498316/525649
This answer generates just hex characters, 0-9,a-f
. For something that doesn't look like hex, try this:
str_shuffle(
rtrim(
base64_encode(bin2hex(openssl_random_pseudo_bytes(5))),
'='
).
strtoupper(bin2hex(openssl_random_pseudo_bytes(7))).
bin2hex(openssl_random_pseudo_bytes(13))
)
base64_encode
returns a wider spread of alphanumeric charsrtrim
removes the =
sometimes at the end Examples:
32eFVfGDg891Be5e7293e54z1D23110M3ZU3FMjb30Z9a740Ej0jz4
b280R72b48eOm77a25YCj093DE5d9549Gc73Jg8TdD9Z0Nj4b98760
051b33654C0Eg201cfW0e6NA4b9614ze8D2FN49E12Y0zY557aUCb8
y67Q86ffd83G0z00M0Z152f7O2ADcY313gD7a774fc5FF069zdb5b7
This isn't very configurable for creating an interface for users, but for some purposes that's okay. Increase the number of chars to account for the lack of special characters.
Update
While what I write below is true as a general answer about shared libraries, I think the most frequent cause of these sorts of message is because you've installed a package, but not installed the "-dev" version of that package.
Well, it's not lying - there is no libpthread_rt.so.1
in that listing. You probably need to re-configure and re-build it so that it depends on the library you have, or install whatever provides libpthread_rt.so.1
.
Generally, the numbers after the .so are version numbers, and you'll often find that they are symlinks to each other, so if you have version 1.1 of libfoo.so, you'll have a real file libfoo.so.1.0, and symlinks foo.so and foo.so.1 pointing to the libfoo.so.1.0. And if you install version 1.1 without removing the other one, you'll have a libfoo.so.1.1, and libfoo.so.1 and libfoo.so will now point to the new one, but any code that requires that exact version can use the libfoo.so.1.0 file. Code that just relies on the version 1 API, but doesn't care if it's 1.0 or 1.1 will specify libfoo.so.1. As orip pointed out in the comments, this is explained well at http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html.
In your case, you might get away with symlinking libpthread_rt.so.1
to libpthread_rt.so
. No guarantees that it won't break your code and eat your TV dinners, though.
Most suggestions are assuming that you need to somehow destroy the last 20 commits, which is why it means "rewriting history", but you don't have to.
Just create a new branch from the commit #80 and work on that branch going forward. The other 20 commits will stay on the old orphaned branch.
If you absolutely want your new branch to have the same name, remember that branch are basically just labels. Just rename your old branch to something else, then create the new branch at commit #80 with the name you want.
I'm sure there's some nice library that does this sort of thing already for you... But to just stick with the approach you're already going with, Map#entrySet
gives you a combined Object
with the key
and the value
. So something like:
for (Map.Entry<String, Object> entry : map.entrySet()) {
System.out.println(entry.getKey() + ":" + entry.getValue().toString());
}
will do what you're after.
If you're using java 8, there's also the new streaming approach.
map.forEach((key, value) -> System.out.println(key + ":" + value));
- name: Move the src file to dest
command: mv /path/to/src /path/to/dest
args:
removes: /path/to/src
creates: /path/to/dest
This runs the mv
command only when /path/to/src
exists and /path/to/dest
does not, so it runs once per host, moves the file, then doesn't run again.
I use this method when I need to move a file or directory on several hundred hosts, many of which may be powered off at any given time. It's idempotent and safe to leave in a playbook.
just put #login-box
before <h2>Welcome</h2>
will be ok.
<div class='container'>
<div class='hero-unit'>
<div id='login-box' class='pull-right control-group'>
<div class='clearfix'>
<input type='text' placeholder='Username' />
</div>
<div class='clearfix'>
<input type='password' placeholder='Password' />
</div>
<button type='button' class='btn btn-primary'>Log in</button>
</div>
<h2>Welcome</h2>
<p>Please log in</p>
</div>
</div>
here is jsfiddle http://jsfiddle.net/SyjjW/4/
You are trying to create a wrapper to get Application Context and there is a possibility that it might return "null
" pointer.
As per my understanding, I guess its better approach to call- any of the 2
Context.getApplicationContext()
or Activity.getApplication()
.
Google Maps actually uses signed values to represent the position:
Latitude : max/min 90.0000000
to -90.0000000
Longitude : max/min 180.0000000
to -180.0000000
So if you want to work with Coordinates in your projects you would need DECIMAL(10,7) ie. for SQL.
This can be done using HTML5's placeHolder or using JavaScript. Checkout this post.
Use the bootstrap classes col-xx-#
and col-xx-offset-#
So what is happening here is your screen is getting divided into 12 columns. In col-xx-#
, #
is the number of columns you cover and offset is the number of columns you leave.
For xx
, in a general website, md
is preferred and if you want your layout to look the same in a mobile device, xs
is preferred.
With what I can make of your requirement,
<div class="row">
<div class="col-md-4">First Div</div>
<div class="col-md-8">Second DIV </div>
</div>
Should do the trick.
I found this question through another question which was KeystoneJS specific but was marked as duplicate. If anyone here might be looking for a Keystone answer, this is how I did my deep populate query in Keystone.
Mongoose two level population using KeystoneJs [duplicate]
exports.getStoreWithId = function (req, res) {
Store.model
.find()
.populate({
path: 'productTags productCategories',
populate: {
path: 'tags',
},
})
.where('updateId', req.params.id)
.exec(function (err, item) {
if (err) return res.apiError('database error', err);
// possibly more than one
res.apiResponse({
store: item,
});
});
};
The syntax is token-level, so the meaning of the dollar sign depends on the token it's in. The expression $(command)
is a modern synonym for `command`
which stands for command substitution; it means run command
and put its output here. So
echo "Today is $(date). A fine day."
will run the date
command and include its output in the argument to echo
. The parentheses are unrelated to the syntax for running a command in a subshell, although they have something in common (the command substitution also runs in a separate subshell).
By contrast, ${variable}
is just a disambiguation mechanism, so you can say ${var}text
when you mean the contents of the variable var
, followed by text
(as opposed to $vartext
which means the contents of the variable vartext
).
The while
loop expects a single argument which should evaluate to true or false (or actually multiple, where the last one's truth value is examined -- thanks Jonathan Leffler for pointing this out); when it's false, the loop is no longer executed. The for
loop iterates over a list of items and binds each to a loop variable in turn; the syntax you refer to is one (rather generalized) way to express a loop over a range of arithmetic values.
A for
loop like that can be rephrased as a while
loop. The expression
for ((init; check; step)); do
body
done
is equivalent to
init
while check; do
body
step
done
It makes sense to keep all the loop control in one place for legibility; but as you can see when it's expressed like this, the for
loop does quite a bit more than the while
loop.
Of course, this syntax is Bash-specific; classic Bourne shell only has
for variable in token1 token2 ...; do
(Somewhat more elegantly, you could avoid the echo
in the first example as long as you are sure that your argument string doesn't contain any %
format codes:
date +'Today is %c. A fine day.'
Avoiding a process where you can is an important consideration, even though it doesn't make a lot of difference in this isolated example.)
I believe James Hunt's answer will solve the problem.
@user3731784: In your new message, the compiler seems to be confused because of the "C:\Program Files\IAR systems\Embedded Workbench 7.0\430\lib\dlib\d1430fn.h" argument. Why are you giving this header file at the middle of other compiler switches? Please correct this and try again. Also, it probably is a good idea to give the source file name after all the compiler switches and not at the beginning.
I solved it by setting attachToRoot
of inflater.inflate()
to false
.
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_overview, container, false);
return view;
}
You can use the tee
command to redirect output:
/usr/bin/mysqldump -u user -pupasswd my-database | \
tee >(gzip -9 -c > /home/user/backup/mydatabase-backup-`date +\%m\%d_\%Y`.sql.gz) | \
gzip> /home/user/backup2/mydatabase-backup-`date +\%m\%d_\%Y`.sql.gz 2>&1
see documentation here
#!/usr/bin/env bash
instead of #!/bin/sh
to prevent the problem caused by /bin/sh
linked to different default shell in different platforms, or there will be error like unexpected operator, that's what happened on my computer (Ubuntu 64 bits 12.04).expr
program unless you install it, so I just use uname
.uname
to get the system information (-s
parameter).expr
and substr
to deal with the string.if
elif
fi
to do the matching job.uname -s
specification.#!/usr/bin/env bash
if [ "$(uname)" == "Darwin" ]; then
# Do something under Mac OS X platform
elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then
# Do something under GNU/Linux platform
elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW32_NT" ]; then
# Do something under 32 bits Windows NT platform
elif [ "$(expr substr $(uname -s) 1 10)" == "MINGW64_NT" ]; then
# Do something under 64 bits Windows NT platform
fi
Following is my TypeScript code which can be converted easily into JavaScript and you can use
/**
* Convert BASE64 to BLOB
* @param base64Image Pass Base64 image data to convert into the BLOB
*/
private convertBase64ToBlob(base64Image: string) {
// Split into two parts
const parts = base64Image.split(';base64,');
// Hold the content type
const imageType = parts[0].split(':')[1];
// Decode Base64 string
const decodedData = window.atob(parts[1]);
// Create UNIT8ARRAY of size same as row data length
const uInt8Array = new Uint8Array(decodedData.length);
// Insert all character code into uInt8Array
for (let i = 0; i < decodedData.length; ++i) {
uInt8Array[i] = decodedData.charCodeAt(i);
}
// Return BLOB image after conversion
return new Blob([uInt8Array], { type: imageType });
}
You can use javascript's indexOf function.
var str1 = "ABCDEFGHIJKLMNOP";
var str2 = "DEFG";
if(str1.indexOf(str2) != -1){
alert(str2 + " found");
}
I use this to get the Parent, similarly for child
$( this ).children( 'li.target' ).css("border", "3px double red");
Good Luck
You can do this in a one liner using the JSON methods if you're willing to lose a tiny bit of performance (though some have reported it being faster than iterating through the objects recursively - most likely because PHP is slow at calling functions). "But I already did this" you say. Not exactly - you used json_decode
on the array, but you need to encode it with json_encode
first.
The json_encode
and json_decode
methods. These are automatically bundled in PHP 5.2.0 and up. If you use any older version there's also a PECL library (that said, in that case you should really update your PHP installation. Support for 5.1 stopped in 2006.)
array
/stdClass
-> stdClass
$stdClass = json_decode(json_encode($booking));
array
/stdClass
-> array
The manual specifies the second argument of json_decode
as:
assoc
WhenTRUE
, returned objects will be converted into associative arrays.
Hence the following line will convert your entire object into an array:
$array = json_decode(json_encode($booking), true);
You can also try the find
command. If you only want files in the current directory:
find . -d 1 -prune -ls
Run a command on each of them?
find . -d 1 -prune -exec echo {} \;
Count lines, but only in files?
find . -d 1 -prune -type f -exec wc -l {} \;
Slight improvement over the version that uses a sequence I think:
CREATE OR REPLACE FUNCTION in_sort(anyarray, out id anyelement, out ordinal int)
LANGUAGE SQL AS
$$
SELECT $1[i], i FROM generate_series(array_lower($1,1),array_upper($1,1)) i;
$$;
SELECT
*
FROM
comments c
INNER JOIN (SELECT * FROM in_sort(ARRAY[1,3,2,4])) AS in_sort
USING (id)
ORDER BY in_sort.ordinal;
To extend on rk rk's solution: In case you want the format to include the time, you can add the toTimeString()
to your string, and then strip the GMT part, as follows:
var d = new Date('2013-03-10T02:00:00Z');
var fd = d.toLocaleDateString() + ' ' + d.toTimeString().substring(0, d.toTimeString().indexOf("GMT"));
I know it's an old post but I had the same issue today, what I did is simple : changing my script that send my playbook from my local host to the server, before sending it with maven command, I did this :
cat common_vars.yml > vars.yml
cat snapshot_vars.yml >> vars.yml
# or
#cat release_vars.yml >> vars.yml
mvn ....
in map.jsx
or map.js
file, if you exporting as default like:
export default MapComponent;
then you can import it like
import MapComponent from './map'
but if you do not export it as default like this one here
export const MapComponent = () => { ...whatever }
you need to import in inside curly braces like
import { MapComponent } from './map'
like below:
import './css/app.css'
if you are using sass all you need to do is just use sass loader with webpack!
For more generic advice on debugging this kind of problem MDN have a good article TypeError: "x" is not a function:
It was attempted to call a value like a function, but the value is not actually a function. Some code expects you to provide a function, but that didn't happen.
Maybe there is a typo in the function name? Maybe the object you are calling the method on does not have this function? For example, JavaScript objects have no map function, but JavaScript Array object do.
Basically the object (all functions in js are also objects) does not exist where you think it does. This could be for numerous reasons including(not an extensive list):
var x = function(){_x000D_
var y = function() {_x000D_
alert('fired y');_x000D_
}_x000D_
};_x000D_
_x000D_
//the global scope can't access y because it is closed over in x and not exposed_x000D_
//y is not a function err triggered_x000D_
x.y();
_x000D_
var x = function(){_x000D_
var y = function() {_x000D_
alert('fired y');_x000D_
}_x000D_
};_x000D_
_x000D_
//z is not a function error (as above) triggered_x000D_
x.z();
_x000D_
I often do this:
arr = ["a", "b", "c"]
(0...arr.length).map do |int|
[arr[int], int + 2]
end
#=> [["a", 2], ["b", 3], ["c", 4]]
Instead of directly iterating over the elements of the array, you're iterating over a range of integers and using them as the indices to retrieve the elements of the array.
Could this class from this forum post help you?
public class BaseConverter {
public static string ToBase(string number, int start_base, int target_base) {
int base10 = this.ToBase10(number, start_base);
string rtn = this.FromBase10(base10, target_base);
return rtn;
}
public static int ToBase10(string number, int start_base) {
if (start_base < 2 || start_base > 36) return 0;
if (start_base == 10) return Convert.ToInt32(number);
char[] chrs = number.ToCharArray();
int m = chrs.Length - 1;
int n = start_base;
int x;
int rtn = 0;
foreach(char c in chrs) {
if (char.IsNumber(c))
x = int.Parse(c.ToString());
else
x = Convert.ToInt32(c) - 55;
rtn += x * (Convert.ToInt32(Math.Pow(n, m)));
m--;
}
return rtn;
}
public static string FromBase10(int number, int target_base) {
if (target_base < 2 || target_base > 36) return "";
if (target_base == 10) return number.ToString();
int n = target_base;
int q = number;
int r;
string rtn = "";
while (q >= n) {
r = q % n;
q = q / n;
if (r < 10)
rtn = r.ToString() + rtn;
else
rtn = Convert.ToChar(r + 55).ToString() + rtn;
}
if (q < 10)
rtn = q.ToString() + rtn;
else
rtn = Convert.ToChar(q + 55).ToString() + rtn;
return rtn;
}
}
Totally untested... let me know if it works! (Copy-pasted it in case the forum post goes away or something...)
I needed to achieve the same results, but using something more generic (as the type was not known). Thanks to marc's answer I finally figured out what I was trying to achieve:
public static LambdaExpression CombineOr(Type sourceType, LambdaExpression exp, LambdaExpression newExp)
{
var parameter = Expression.Parameter(sourceType);
var leftVisitor = new ReplaceExpressionVisitor(exp.Parameters[0], parameter);
var left = leftVisitor.Visit(exp.Body);
var rightVisitor = new ReplaceExpressionVisitor(newExp.Parameters[0], parameter);
var right = rightVisitor.Visit(newExp.Body);
var delegateType = typeof(Func<,>).MakeGenericType(sourceType, typeof(bool));
return Expression.Lambda(delegateType, Expression.Or(left, right), parameter);
}
or you can use another approach:
$( "#serverMsg", window.opener.document )
I am adding my 2 cents here, a satisfyingly small combination of different answers:
const colorShade = (col, amt) => {
col = col.replace(/^#/, '')
if (col.length === 3) col = col[0] + col[0] + col[1] + col[1] + col[2] + col[2]
let [r, g, b] = col.match(/.{2}/g);
([r, g, b] = [parseInt(r, 16) + amt, parseInt(g, 16) + amt, parseInt(b, 16) + amt])
r = Math.max(Math.min(255, r), 0).toString(16)
g = Math.max(Math.min(255, g), 0).toString(16)
b = Math.max(Math.min(255, b), 0).toString(16)
const rr = (r.length < 2 ? '0' : '') + r
const gg = (g.length < 2 ? '0' : '') + g
const bb = (b.length < 2 ? '0' : '') + b
return `#${rr}${gg}${bb}`
}
accepts a color starting with #
or not, with 6 characters or 3 characters.
example of use: colorShade('#54b946', -40)
Here is the output of 4 colors with 3 shades lighter and 3 shades darker for each of them (amount is a multiple of 40 here).
As of Node.js 14.3.0 the top-level await is supported.
Required flag: --experimental-top-level-await
.
Further details: https://v8.dev/features/top-level-await
It has nothing to do about <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
.
Just go to project and right click then project menu -> Clean the project error will definitely remove and update maven .
What are non-recursive mutexes good for?
They are absolutely good when you have to make sure the mutex is unlocked before doing something. This is because pthread_mutex_unlock
can guarantee that the mutex is unlocked only if it is non-recursive.
pthread_mutex_t g_mutex;
void foo()
{
pthread_mutex_lock(&g_mutex);
// Do something.
pthread_mutex_unlock(&g_mutex);
bar();
}
If g_mutex
is non-recursive, the code above is guaranteed to call bar()
with the mutex unlocked.
Thus eliminating the possibility of a deadlock in case bar()
happens to be an unknown external function which may well do something that may result in another thread trying to acquire the same mutex. Such scenarios are not uncommon in applications built on thread pools, and in distributed applications, where an interprocess call may spawn a new thread without the client programmer even realising that. In all such scenarios it's best to invoke the said external functions only after the lock is released.
If g_mutex
was recursive, there would be simply no way to make sure it is unlocked before making a call.
ARIA stands for Accessible Rich Internet Applications.
WAI-ARIA is an incredibly powerful technology that allows developers to easily describe the purpose, state and other functionality of visually rich user interfaces - in a way that can be understood by Assistive Technology. WAI-ARIA has finally been integrated into the current working draft of the HTML 5 specification.
And if you are wondering what WAI-ARIA is, its the same thing.
Please note the terms WAI-ARIA and ARIA refer to the same thing. However, it is more correct to use WAI-ARIA to acknowledge its origins in WAI.
WAI = Web Accessibility Initiative
From the looks of it, ARIA is used for assistive technologies and mostly screen reading.
Most of your doubts will be cleared if you read this article
A simple solution could be css-only. You can set styles in your stylesheet, and then adjust them on the bottom of it. Modern smartphones act like they are just 480px wide, while they are actually a lot more. The code to detect a smaller screen in css is
@media handheld, only screen and (max-width: 560px), only screen and (max-device-width: 480px) {
#hoofdcollumn {margin: 10px 5%; width:90%}
}
Hope this helps!
The best way I see is to use live() or delegate() to capture the event in a parent and not in each child element.
If your button is inside a #parent element, you can replace:
$('#myButton').bind('click', onButtonClicked);
by
$('#parent').delegate('#myButton', 'click', onButtonClicked);
even if #myButton doesn't exist yet when this code is executed.
You should not be doing this. Instead, do:
test1.py:
def print_test():
print "I am a test"
print "see! I do nothing productive."
service.py
#near the top
from test1 import print_test
#lots of stuff here
print_test()
Using mordernizr to detect browsers that are not supporting Placeholder, I created this short code to fix them.
//If placeholder is not supported
if (!Modernizr.input.placeholder){
//Loops on inputs and place the placeholder attribute
//in the textbox.
$("input[type=text]").each( function() {
$(this).val($(this).attr('placeholder'));
})
}
Try this one also...
<!DOCTYPE html>_x000D_
<html>_x000D_
_x000D_
<body>_x000D_
_x000D_
<p>Click the button to join two arrays.</p>_x000D_
_x000D_
<button onclick="myFunction()">Try it</button>_x000D_
_x000D_
<p id="demo"></p>_x000D_
<p id="demo1"></p>_x000D_
<script>_x000D_
function myFunction() {_x000D_
var hege = [{_x000D_
1: "Cecilie",_x000D_
2: "Lone"_x000D_
}];_x000D_
var stale = [{_x000D_
1: "Emil",_x000D_
2: "Tobias"_x000D_
}];_x000D_
var hege = hege.concat(stale);_x000D_
document.getElementById("demo1").innerHTML = hege;_x000D_
document.getElementById("demo").innerHTML = stale;_x000D_
}_x000D_
</script>_x000D_
_x000D_
</body>_x000D_
_x000D_
</html>
_x000D_
Try this awk
awk -F, '{$0=$3}1' file
column3
,
Divide fields by ,
$0=$3
Set the line to only field 3
1
Print all out. (explained here)This could also be used:
awk -F, '{print $3}' file
If you want to convert from char to int, why not think about unicode number?
SELECT UNICODE(';') -- 59
This way you can convert any char to int without any error. Cheers.
In case you want store the value:
Pair.of<List<>, List<>> output = opt.map(details -> Pair.of(details.a, details.b))).orElseGet(() -> Pair.of(Collections.emptyList(), Collections.emptyList()));
I had the same problem, even with no other errors showing on the "Error List" view after "Rebuild Solution". However, on the "Output" view, I saw the error that was behind the issue:
The primary reference "C:...\myproj.dll" could not be resolved because it was built against the ".NETFramework,Version=v4.6.1" framework. This is a higher version than the currently targeted framework ".NETFramework,Version=v4.5"
Once I corrected this, the issue was resolved.
you have to name your checkboxes accordingly:
<input type="checkbox" name="check_list[]" value="…" />
you can then access all checked checkboxes with
// loop over checked checkboxes
foreach($_POST['check_list'] as $checkbox) {
// do something
}
ps. make sure to properly escape your output (htmlspecialchars()
)
Use the DateTime.SpecifyKind
static method.
Creates a new DateTime object that has the same number of ticks as the specified DateTime, but is designated as either local time, Coordinated Universal Time (UTC), or neither, as indicated by the specified DateTimeKind value.
Example:
DateTime dateTime = DateTime.Now;
DateTime other = DateTime.SpecifyKind(dateTime, DateTimeKind.Utc);
Console.WriteLine(dateTime + " " + dateTime.Kind); // 6/1/2011 4:14:54 PM Local
Console.WriteLine(other + " " + other.Kind); // 6/1/2011 4:14:54 PM Utc
From Bloch, J., Effective Java, 2nd ed, Item 48:
The
float
anddouble
types are particularly ill-suited for monetary calculations because it is impossible to represent 0.1 (or any other negative power of ten) as afloat
ordouble
exactly.For example, suppose you have $1.03 and you spend 42c. How much money do you have left?
System.out.println(1.03 - .42);
prints out
0.6100000000000001
.The right way to solve this problem is to use
BigDecimal
,int
orlong
for monetary calculations.
Though BigDecimal
has some caveats (please see currently accepted answer).
Post.find().sort({date:-1}, function(err, posts){
});
Should work as well
EDIT:
You can also try using this if you get the error sort() only takes 1 Argument
:
Post.find({}, {
'_id': 0, // select keys to return here
}, {sort: '-date'}, function(err, posts) {
// use it here
});
FYI Under certain network conditions your hostname may change or be incorrect. If you are on a mac the following will let you set your hostname fairly permanently:
sudo scutil --set HostName correct-name
Real simple. You just need to have the string 'selected' added to the right option. In the following code, ${myBean.foo == val ? 'selected' : ' '} will add the string 'selected' if the option's value is the same as the bean value;
<select name="foo" id="foo" value="${myBean.foo}">
<option value="">ALL</option>
<c:forEach items="${fooList}" var="val">
<option value="${val}" ${myBean.foo == val ? 'selected' : ' '}><c:out value="${val}" ></c:out></option>
</c:forEach>
</select>
This example here is only applicable to pure blittable types, e.g., types that can be memcpy'd directly in C.
Example - well known 64-bit struct
[StructLayout(LayoutKind.Sequential)]
public struct Voxel
{
public ushort m_id;
public byte m_red, m_green, m_blue, m_alpha, m_matid, m_custom;
}
Defined exactly like this, the struct will be automatically packed as 64-bit.
Now we can create volume of voxels:
Voxel[,,] voxels = new Voxel[16,16,16];
And save them all to a byte array:
int size = voxels.Length * 8; // Well known size: 64 bits
byte[] saved = new byte[size];
GCHandle h = GCHandle.Alloc(voxels, GCHandleType.Pinned);
Marshal.Copy(h.AddrOfPinnedObject(), saved, 0, size);
h.Free();
// now feel free to save 'saved' to a File / memory stream.
However, since the OP wants to know how to convert the struct itself, our Voxel struct can have following method ToBytes
:
byte[] bytes = new byte[8]; // Well known size: 64 bits
GCHandle h = GCHandle.Alloc(this, GCHandleType.Pinned);
Marshal.Copy(hh.AddrOfPinnedObject(), bytes, 0, 8);
h.Free();
You can do the descending sort of a user-defined class this way overriding the compare() method,
Collections.sort(unsortedList,new Comparator<Person>() {
@Override
public int compare(Person a, Person b) {
return b.getName().compareTo(a.getName());
}
});
Or by using Collection.reverse()
to sort descending as user Prince mentioned in his comment.
And you can do the ascending sort like this,
Collections.sort(unsortedList,new Comparator<Person>() {
@Override
public int compare(Person a, Person b) {
return a.getName().compareTo(b.getName());
}
});
Replace the above code with a Lambda expression(Java 8 onwards) we get concise:
Collections.sort(personList, (Person a, Person b) -> b.getName().compareTo(a.getName()));
As of Java 8, List has sort() method which takes Comparator as parameter(more concise) :
personList.sort((a,b)->b.getName().compareTo(a.getName()));
Here a
and b
are inferred as Person type by lambda expression.
For a precise answer to this question on "How to send data via intent from an Activity to Service", Is that you have to override the onStartCommand()
method which is where you receive the intent object:
When you create a Service
you should override the onStartCommand()
method so if you closely look at the signature below, this is where you receive the intent
object which is passed to it:
public int onStartCommand(Intent intent, int flags, int startId)
So from an activity you will create the intent object to start service and then you place your data inside the intent object for example you want to pass a UserID
from Activity
to Service
:
Intent serviceIntent = new Intent(YourService.class.getName())
serviceIntent.putExtra("UserID", "123456");
context.startService(serviceIntent);
When the service is started its onStartCommand()
method will be called so in this method you can retrieve the value (UserID) from the intent object for example
public int onStartCommand (Intent intent, int flags, int startId) {
String userID = intent.getStringExtra("UserID");
return START_STICKY;
}
Note: the above answer specifies to get an Intent with getIntent()
method which is not correct in context of a service
This will help:
http://www.w3schools.com/tags/att_hr_width.asp
<hr width="50%">
This creates a horizontal line with a width of 50%, you would need to create/modify the class if you would like to edit the style.
I use Toad for Oracle and if the table is owned by another username than the one you logged in as and you have access to read the table, you still may need to add the original table owner to the table name.
For example, lets say the table owner's name is 'OWNER1' and you are logged in as 'USER1'. This query may give you a ORA-00904 error:
select * from table_name where x='test';
Prefixing the table_name with the table owner eliminated the error and gives results:
select * from
To understand the differences, you have to first understand what Node.js does to every module during runtime. Node.js creates a wrapper function for every module:
(function(exports, require, module, __filename, __dirname) {
})()
Notice the first param exports
is an empty object, and the third param module
is an object with many properties, and one of the properties is named exports
. This is what exports
comes from and what module.exports
comes from. The former one is a variable object, and the latter one is a property of module
object.
Within the module, Node.js automatically does this thing at the beginning: module.exports = exports
, and ultimately returns module.exports
.
So you can see that if you reassign some value to exports
, it won't have any effect to module.exports
. (Simply because exports
points to another new object, but module.exports
still holds the old exports
)
let exports = {};
const module = {};
module.exports = exports;
exports = { a: 1 }
console.log(module.exports) // {}
But if you updates properties of exports
, it will surely have effect on module.exports
. Because they both point to the same object.
let exports = {};
const module = {};
module.exports = exports;
exports.a = 1;
module.exports.b = 2;
console.log(module.exports) // { a: 1, b: 2 }
Also notice that if you reassign another value to module.exports
, then it seems meaningless for exports
updates. Every updates on exports
is ignored because module.exports
points to another object.
let exports = {};
const module = {};
module.exports = exports;
exports.a = 1;
module.exports = {
hello: () => console.log('hello')
}
console.log(module.exports) // { hello: () => console.log('hello')}
Try These steps if you have tried everything mentioned in above solutions:
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
for the latest Chrome version, this works for me :
var win = window.open("", "Title", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=780,height=200,top="+(screen.height-400)+",left="+(screen.width-840));
win.document.body.innerHTML = 'iframe width="100%" height="100%" src="data:application/pdf;base64,"+base64+"></iframe>';
Thanks
You can even use a version range with pip install
command. Something like this:
pip install 'stevedore>=1.3.0,<1.4.0'
And if the package is already installed and you want to downgrade it add --force-reinstall
like this:
pip install 'stevedore>=1.3.0,<1.4.0' --force-reinstall
Use atof()
But this is deprecated, use this instead:
const char* flt = "4.0800";
float f;
sscanf(flt, "%f", &f);
http://www.cplusplus.com/reference/clibrary/cstdlib/atof/
atof()
returns 0
for both failure and on conversion of 0.0
, best to not use it.
All of the information you are looking for can be found here and here (thanks Reed Copsey):
From the first link:
Classes and structs that are declared directly within a namespace (in other words, that are not nested within other classes or structs) can be either public or internal. Internal is the default if no access modifier is specified.
...
The access level for class members and struct members, including nested classes and structs, is private by default.
...
interfaces default to internal access.
...
Delegates behave like classes and structs. By default, they have internal access when declared directly within a namespace, and private access when nested.
From the second link:
Top-level types, which are not nested in other types, can only have internal or public accessibility. The default accessibility for these types is internal.
And for nested types:
Members of Default member accessibility ---------- ---------------------------- enum public class private interface public struct private
I have successfully styled my Bootstrap navbar using the following CSS. Also you didn't define any font in your CSS so that's why the font isn't changing. The site for which this CSS is used can be found here.
.navbar-default .navbar-nav > li > a:hover, .navbar-default .navbar-nav > li > a:focus {
color: #000; /*Sets the text hover color on navbar*/
}
.navbar-default .navbar-nav > .active > a, .navbar-default .navbar-nav > .active >
a:hover, .navbar-default .navbar-nav > .active > a:focus {
color: white; /*BACKGROUND color for active*/
background-color: #030033;
}
.navbar-default {
background-color: #0f006f;
border-color: #030033;
}
.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
color: #262626;
text-decoration: none;
background-color: #66CCFF; /*change color of links in drop down here*/
}
.nav > li > a:hover,
.nav > li > a:focus {
text-decoration: none;
background-color: silver; /*Change rollover cell color here*/
}
.navbar-default .navbar-nav > li > a {
color: white; /*Change active text color here*/
}
You could use Reflection to get the value of the property.
list = list.OrderBy( x => TypeHelper.GetPropertyValue( x, sortBy ) )
.ToList();
Where TypeHelper has a static method like:
public static class TypeHelper
{
public static object GetPropertyValue( object obj, string name )
{
return obj == null ? null : obj.GetType()
.GetProperty( name )
.GetValue( obj, null );
}
}
You might also want to look at Dynamic LINQ from the VS2008 Samples library. You could use the IEnumerable extension to cast the List as an IQueryable and then use the Dynamic link OrderBy extension.
list = list.AsQueryable().OrderBy( sortBy + " " + sortDirection );
Used below code to set driver type based on need of Headless / Head for both Firefox and chrome:
// Can pass browser type
if brower.lower() == 'chrome':
driver = webdriver.Chrome('..\drivers\chromedriver')
elif brower.lower() == 'headless chrome':
ch_Options = Options()
ch_Options.add_argument('--headless')
ch_Options.add_argument("--disable-gpu")
driver = webdriver.Chrome('..\drivers\chromedriver',options=ch_Options)
elif brower.lower() == 'firefox':
driver = webdriver.Firefox(executable_path=r'..\drivers\geckodriver.exe')
elif brower.lower() == 'headless firefox':
ff_option = FFOption()
ff_option.add_argument('--headless')
ff_option.add_argument("--disable-gpu")
driver = webdriver.Firefox(executable_path=r'..\drivers\geckodriver.exe', options=ff_option)
elif brower.lower() == 'ie':
driver = webdriver.Ie('..\drivers\IEDriverServer')
else:
raise Exception('Invalid Browser Type')
You can unload a ClassLoader but you cannot unload specific classes. More specifically you cannot unload classes created in a ClassLoader that's not under your control.
If possible, I suggest using your own ClassLoader so you can unload.
if not exist "%USERPROFILE%\.qgis-custom\" (
mkdir "%USERPROFILE%\.qgis-custom" 2>nul
if not errorlevel 1 (
xcopy "%OSGEO4W_ROOT%\qgisconfig" "%USERPROFILE%\.qgis-custom" /s /v /e
)
)
You have it almost done. The logic is correct, just some little changes.
This code checks for the existence of the folder (see the ending backslash, just to differentiate a folder from a file with the same name).
If it does not exist then it is created and creation status is checked. If a file with the same name exists or you have no rights to create the folder, it will fail.
If everyting is ok, files are copied.
All paths are quoted to avoid problems with spaces.
It can be simplified (just less code, it does not mean it is better). Another option is to always try to create the folder. If there are no errors, then copy the files
mkdir "%USERPROFILE%\.qgis-custom" 2>nul
if not errorlevel 1 (
xcopy "%OSGEO4W_ROOT%\qgisconfig" "%USERPROFILE%\.qgis-custom" /s /v /e
)
In both code samples, files are not copied if the folder is not being created during the script execution.
EDITED - As dbenham comments, the same code can be written as a single line
md "%USERPROFILE%\.qgis-custom" 2>nul && xcopy "%OSGEO4W_ROOT%\qgisconfig" "%USERPROFILE%\.qgis-custom" /s /v /e
The code after the &&
will only be executed if the previous command does not set errorlevel. If mkdir
fails, xcopy
is not executed.
Mark Russinovich wrote a terrific tool called AccessChk that lets you get this information from the command line. No installation is necessary.
http://technet.microsoft.com/en-us/sysinternals/bb664922.aspx
For example:
accesschk.exe /accepteula -q -a SeServiceLogonRight
Returns this for me:
IIS APPPOOL\DefaultAppPool
IIS APPPOOL\Classic .NET AppPool
NT SERVICE\ALL SERVICES
By contrast, whoami /priv
and whoami /all
were missing some entries for me, like SeServiceLogonRight
.
This is totally valid, I do it all the time. I usually use IllegalArguemntException if it is a result of parameter checking.
In this case I wouldn't suggest asserts because they are turned off in a deployment build and you always want to stop this from happening, but they are valid if your group does ALL it's testing with asserts turned on and you think the chance of missing a parameter problem at runtime is more acceptable than throwing an exception that is maybe more likely to cause a runtime crash.
Also, an assert would be more difficult for the caller to trap, this is easy.
You probably want to list it as a "throws" in your method's javadocs along with the reason so that callers aren't surprised.
A lambda can only be converted to a function pointer if it does not capture, from the draft C++11 standard section 5.1.2
[expr.prim.lambda] says (emphasis mine):
The closure type for a lambda-expression with no lambda-capture has a public non-virtual non-explicit const conversion function to pointer to function having the same parameter and return types as the closure type’s function call operator. The value returned by this conversion function shall be the address of a function that, when invoked, has the same effect as invoking the closure type’s function call operator.
Note, cppreference also covers this in their section on Lambda functions.
So the following alternatives would work:
typedef bool(*DecisionFn)(int);
Decide greaterThanThree{ []( int x ){ return x > 3; } };
and so would this:
typedef bool(*DecisionFn)();
Decide greaterThanThree{ [](){ return true ; } };
and as 5gon12eder points out, you can also use std::function
, but note that std::function
is heavy weight, so it is not a cost-less trade-off.
MySQL is most likely in STRICT
mode, which isn't necessarily a bad thing, as you'll identify bugs/issues early and not just blindly think everything is working as you intended.
Change the column to allow null:
ALTER TABLE `x` CHANGE `display_name` `display_name` TEXT NULL
or, give it a default value as empty string:
ALTER TABLE `x` CHANGE `display_name` `display_name` TEXT NOT NULL DEFAULT ''
Every library I can think of returns a stream. You could use IOUtils.toString()
from Apache Commons IO to read an InputStream
into a String
in one method call. E.g.:
URL url = new URL("http://www.example.com/");
URLConnection con = url.openConnection();
InputStream in = con.getInputStream();
String encoding = con.getContentEncoding();
encoding = encoding == null ? "UTF-8" : encoding;
String body = IOUtils.toString(in, encoding);
System.out.println(body);
Update: I changed the example above to use the content encoding from the response if available. Otherwise it'll default to UTF-8 as a best guess, instead of using the local system default.
You could try this notattion:
SELECT * from table1,table2
More complicated one :
SELECT table1.field1,table1.field2, table2.field3,table2.field8 from table1,table2 where table1.field2 = something and table2.field3 = somethingelse
CSS3 grab
and grabbing
are now allowed values for cursor
.
In order to provide several fallbacks for cross-browser compatibility3 including custom cursor files, a complete solution would look like this:
.draggable {
cursor: move; /* fallback: no `url()` support or images disabled */
cursor: url(images/grab.cur); /* fallback: Internet Explorer */
cursor: -webkit-grab; /* Chrome 1-21, Safari 4+ */
cursor: -moz-grab; /* Firefox 1.5-26 */
cursor: grab; /* W3C standards syntax, should come least */
}
.draggable:active {
cursor: url(images/grabbing.cur);
cursor: -webkit-grabbing;
cursor: -moz-grabbing;
cursor: grabbing;
}
Update 2019-10-07:
.draggable {
cursor: move; /* fallback: no `url()` support or images disabled */
cursor: url(images/grab.cur); /* fallback: Chrome 1-21, Firefox 1.5-26, Safari 4+, IE, Edge 12-14, Android 2.1-4.4.4 */
cursor: grab; /* W3C standards syntax, all modern browser */
}
.draggable:active {
cursor: url(images/grabbing.cur);
cursor: grabbing;
}
Use raw string literals for multi-line strings:
func main(){
multiline := `line
by line
and line
after line`
}
Raw string literals are character sequences between back quotes, as in
`foo`
. Within the quotes, any character may appear except back quote.
A significant part is that is raw literal not just multi-line and to be multi-line is not the only purpose of it.
The value of a raw string literal is the string composed of the uninterpreted (implicitly UTF-8-encoded) characters between the quotes; in particular, backslashes have no special meaning...
So escapes will not be interpreted and new lines between ticks will be real new lines.
func main(){
multiline := `line
by line \n
and line \n
after line`
// \n will be just printed.
// But new lines are there too.
fmt.Print(multiline)
}
Possibly you have long line which you want to break and you don't need new lines in it. In this case you could use string concatenation.
func main(){
multiline := "line " +
"by line " +
"and line " +
"after line"
fmt.Print(multiline) // No new lines here
}
Since " " is interpreted string literal escapes will be interpreted.
func main(){
multiline := "line " +
"by line \n" +
"and line \n" +
"after line"
fmt.Print(multiline) // New lines as interpreted \n
}
This is a simplified answer of how to run SQL query from Flask Shell
First, map your module (if your module/app is manage.py in the principal folder and you are in a UNIX Operating system), run:
export FLASK_APP=manage
Run Flask shell
flask shell
Import what we need::
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy(app)
from sqlalchemy import text
Run your query:
result = db.engine.execute(text("<sql here>").execution_options(autocommit=True))
This use the currently database connection which has the application.
The below worked for me
[Edit]: Please ignore, not available in php now.
There is one more which you can use
<?php
$fields = array(
'name' => 'mike',
'pass' => 'se_ret'
);
$files = array(
array(
'name' => 'uimg',
'type' => 'image/jpeg',
'file' => './profile.jpg',
)
);
$response = http_post_fields("http://www.example.com/", $fields, $files);
?>
In CSS you need to use a Unicode escape sequence in place of HTML Entities. This is based on the hexadecimal value of a character.
I found that the easiest way to convert symbol to their hexadecimal equivalent is, such as from ▾ (▾
) to \25BE
is to use the Microsoft calculator =)
Yes. Enable programmers mode, turn on the decimal system, enter 9662
, then switch to hex and you'll get 25BE
. Then just add a backslash \
to the beginning.
Here is the code and demo for Adding the marker, deleting any of the marker and also getting all the present/added markers :
Here is the entire JSFiddle code . Also here is the full page demo.
// Script for adding marker on map click
map.on('click', onMapClick);
function onMapClick(e) {
var geojsonFeature = {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Point",
"coordinates": [e.latlng.lat, e.latlng.lng]
}
}
var marker;
L.geoJson(geojsonFeature, {
pointToLayer: function(feature, latlng){
marker = L.marker(e.latlng, {
title: "Resource Location",
alt: "Resource Location",
riseOnHover: true,
draggable: true,
}).bindPopup("<input type='button' value='Delete this marker' class='marker-delete-button'/>");
marker.on("popupopen", onPopupOpen);
return marker;
}
}).addTo(map);
}
// Function to handle delete as well as other events on marker popup open
function onPopupOpen() {
var tempMarker = this;
// To remove marker on click of delete button in the popup of marker
$(".marker-delete-button:visible").click(function () {
map.removeLayer(tempMarker);
});
}
// getting all the markers at once
function getAllMarkers() {
var allMarkersObjArray = []; // for marker objects
var allMarkersGeoJsonArray = []; // for readable geoJson markers
$.each(map._layers, function (ml) {
if (map._layers[ml].feature) {
allMarkersObjArray.push(this)
allMarkersGeoJsonArray.push(JSON.stringify(this.toGeoJSON()))
}
})
console.log(allMarkersObjArray);
}
// any html element such as button, div to call the function()
$(".get-markers").on("click", getAllMarkers);
The servlet API lacks this feature because it was created in a time when many believed that the query string and the message body was just two different ways of sending parameters, not realizing that the purposes of the parameters are fundamentally different.
The query string parameters ?foo=bar are a part of the URL because they are involved in identifying a resource (which could be a collection of many resources), like "all persons aged 42":
GET /persons?age=42
The message body parameters in POST or PUT are there to express a modification to the target resource(s). Fx setting a value to the attribute "hair":
PUT /persons?age=42
hair=grey
So it is definitely RESTful to use both query parameters and body parameters at the same time, separated so that you can use them for different purposes. The feature is definitely missing in the Java servlet API.
HTML 5 video does go fullscreen in the latest nightly build of Safari, though I'm not sure how it is technically accomplished.
Alternatively:
if( jQuery('#elem').get(0) ) {}
int* test();
but it would be "more C++" to use vectors:
std::vector< int > test();
EDIT
I'll clarify some point. Since you mentioned C++, I'll go with new[]
and delete[]
operators, but it's the same with malloc/free.
In the first case, you'll write something like:
int* test() {
return new int[size_needed];
}
but it's not a nice idea because your function's client doesn't really know the size of the array you are returning, although the client can safely deallocate it with a call to delete[]
.
int* theArray = test();
for (size_t i; i < ???; ++i) { // I don't know what is the array size!
// ...
}
delete[] theArray; // ok.
A better signature would be this one:
int* test(size_t& arraySize) {
array_size = 10;
return new int[array_size];
}
And your client code would now be:
size_t theSize = 0;
int* theArray = test(theSize);
for (size_t i; i < theSize; ++i) { // now I can safely iterate the array
// ...
}
delete[] theArray; // still ok.
Since this is C++, std::vector<T>
is a widely-used solution:
std::vector<int> test() {
std::vector<int> vector(10);
return vector;
}
Now you don't have to call delete[]
, since it will be handled by the object, and you can safely iterate it with:
std::vector<int> v = test();
std::vector<int>::iterator it = v.begin();
for (; it != v.end(); ++it) {
// do your things
}
which is easier and safer.
Not sure if this answers the question. But I know this took me a while to figure out. I was looping through a website and all of sudden the name of the authors weren't there anymore. So needed a check statement.
if type(author) == type(None):
my if body
else:
my else body
Author can be any variable in this case, and None
can be any type that you are checking for.
If you have only these regular shapes, there is a simple procedure as follows :
approxPolyDP
function.Below is my example in Python:
import numpy as np
import cv2
img = cv2.imread('shapes.png')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
ret,thresh = cv2.threshold(gray,127,255,1)
contours,h = cv2.findContours(thresh,1,2)
for cnt in contours:
approx = cv2.approxPolyDP(cnt,0.01*cv2.arcLength(cnt,True),True)
print len(approx)
if len(approx)==5:
print "pentagon"
cv2.drawContours(img,[cnt],0,255,-1)
elif len(approx)==3:
print "triangle"
cv2.drawContours(img,[cnt],0,(0,255,0),-1)
elif len(approx)==4:
print "square"
cv2.drawContours(img,[cnt],0,(0,0,255),-1)
elif len(approx) == 9:
print "half-circle"
cv2.drawContours(img,[cnt],0,(255,255,0),-1)
elif len(approx) > 15:
print "circle"
cv2.drawContours(img,[cnt],0,(0,255,255),-1)
cv2.imshow('img',img)
cv2.waitKey(0)
cv2.destroyAllWindows()
Below is the output:
Remember, it works only for regular shapes.
Alternatively to find circles, you can use houghcircles
. You can find a tutorial here.
Regarding iOS, OpenCV devs are developing some iOS samples this summer, So visit their site : www.code.opencv.org and contact them.
You can find slides of their tutorial here : http://code.opencv.org/svn/gsoc2012/ios/trunk/doc/CVPR2012_OpenCV4IOS_Tutorial.pdf
Data transfer between two platform requires a common data format. JSON is a common global format to send cross platform data.
drawChart(600/50, JSON.parse('<?php echo json_encode($day); ?>'), JSON.parse('<?php echo json_encode($week); ?>'), JSON.parse('<?php echo json_encode($month); ?>'), JSON.parse('<?php echo json_encode(createDatesArray(cal_days_in_month(CAL_GREGORIAN, date('m',strtotime('-1 day')), date('Y',strtotime('-1 day'))))); ?>'))
This is the answer to your question. The answer may look very complex. You can see a simple example describing the communication between server side and client side here
$employee = array(
"employee_id" => 10011,
"Name" => "Nathan",
"Skills" =>
array(
"analyzing",
"documentation" =>
array(
"desktop",
"mobile"
)
)
);
Conversion to JSON format is required to send the data back to client application ie, JavaScript. PHP has a built in function json_encode(), which can convert any data to JSON format. The output of the json_encode function will be a string like this.
{
"employee_id": 10011,
"Name": "Nathan",
"Skills": {
"0": "analyzing",
"documentation": [
"desktop",
"mobile"
]
}
}
On the client side, success function will get the JSON string. Javascript also have JSON parsing function JSON.parse() which can convert the string back to JSON object.
$.ajax({
type: 'POST',
headers: {
"cache-control": "no-cache"
},
url: "employee.php",
async: false,
cache: false,
data: {
employee_id: 10011
},
success: function (jsonString) {
var employeeData = JSON.parse(jsonString); // employeeData variable contains employee array.
});
Your @POST
method should be accepting a JSON object instead of a string. Jersey uses JAXB to support marshaling and unmarshaling JSON objects (see the jersey docs for details). Create a class like:
@XmlRootElement
public class MyJaxBean {
@XmlElement public String param1;
@XmlElement public String param2;
}
Then your @POST
method would look like the following:
@POST @Consumes("application/json")
@Path("/create")
public void create(final MyJaxBean input) {
System.out.println("param1 = " + input.param1);
System.out.println("param2 = " + input.param2);
}
This method expects to receive JSON object as the body of the HTTP POST. JAX-RS passes the content body of the HTTP message as an unannotated parameter -- input
in this case. The actual message would look something like:
POST /create HTTP/1.1
Content-Type: application/json
Content-Length: 35
Host: www.example.com
{"param1":"hello","param2":"world"}
Using JSON in this way is quite common for obvious reasons. However, if you are generating or consuming it in something other than JavaScript, then you do have to be careful to properly escape the data. In JAX-RS, you would use a MessageBodyReader and MessageBodyWriter to implement this. I believe that Jersey already has implementations for the required types (e.g., Java primitives and JAXB wrapped classes) as well as for JSON. JAX-RS supports a number of other methods for passing data. These don't require the creation of a new class since the data is passed using simple argument passing.
HTML <FORM>
The parameters would be annotated using @FormParam:
@POST
@Path("/create")
public void create(@FormParam("param1") String param1,
@FormParam("param2") String param2) {
...
}
The browser will encode the form using "application/x-www-form-urlencoded". The JAX-RS runtime will take care of decoding the body and passing it to the method. Here's what you should see on the wire:
POST /create HTTP/1.1
Host: www.example.com
Content-Type: application/x-www-form-urlencoded;charset=UTF-8
Content-Length: 25
param1=hello¶m2=world
The content is URL encoded in this case.
If you do not know the names of the FormParam's you can do the following:
@POST @Consumes("application/x-www-form-urlencoded")
@Path("/create")
public void create(final MultivaluedMap<String, String> formParams) {
...
}
HTTP Headers
You can using the @HeaderParam annotation if you want to pass parameters via HTTP headers:
@POST
@Path("/create")
public void create(@HeaderParam("param1") String param1,
@HeaderParam("param2") String param2) {
...
}
Here's what the HTTP message would look like. Note that this POST does not have a body.
POST /create HTTP/1.1
Content-Length: 0
Host: www.example.com
param1: hello
param2: world
I wouldn't use this method for generalized parameter passing. It is really handy if you need to access the value of a particular HTTP header though.
HTTP Query Parameters
This method is primarily used with HTTP GETs but it is equally applicable to POSTs. It uses the @QueryParam annotation.
@POST
@Path("/create")
public void create(@QueryParam("param1") String param1,
@QueryParam("param2") String param2) {
...
}
Like the previous technique, passing parameters via the query string does not require a message body. Here's the HTTP message:
POST /create?param1=hello¶m2=world HTTP/1.1
Content-Length: 0
Host: www.example.com
You do have to be particularly careful to properly encode query parameters on the client side. Using query parameters can be problematic due to URL length restrictions enforced by some proxies as well as problems associated with encoding them.
HTTP Path Parameters
Path parameters are similar to query parameters except that they are embedded in the HTTP resource path. This method seems to be in favor today. There are impacts with respect to HTTP caching since the path is what really defines the HTTP resource. The code looks a little different than the others since the @Path annotation is modified and it uses @PathParam:
@POST
@Path("/create/{param1}/{param2}")
public void create(@PathParam("param1") String param1,
@PathParam("param2") String param2) {
...
}
The message is similar to the query parameter version except that the names of the parameters are not included anywhere in the message.
POST /create/hello/world HTTP/1.1
Content-Length: 0
Host: www.example.com
This method shares the same encoding woes that the query parameter version. Path segments are encoded differently so you do have to be careful there as well.
As you can see, there are pros and cons to each method. The choice is usually decided by your clients. If you are serving FORM
-based HTML pages, then use @FormParam
. If your clients are JavaScript+HTML5-based, then you will probably want to use JAXB-based serialization and JSON objects. The MessageBodyReader/Writer
implementations should take care of the necessary escaping for you so that is one fewer thing that can go wrong. If your client is Java based but does not have a good XML processor (e.g., Android), then I would probably use FORM
encoding since a content body is easier to generate and encode properly than URLs are. Hopefully this mini-wiki entry sheds some light on the various methods that JAX-RS supports.
Note: in the interest of full disclosure, I haven't actually used this feature of Jersey yet. We were tinkering with it since we have a number of JAXB+JAX-RS applications deployed and are moving into the mobile client space. JSON is a much better fit that XML on HTML5 or jQuery-based solutions.
Short and simple:
Function.prototype.clone = function() {
return new Function('return ' + this.toString())();
};
That won't work if the string contains more than one match... try this:
echo "/x/y/z/x" | awk '{ gsub("/", "_") ; system( "echo " $0) }'
or better (if the echo
isn't a placeholder for something else):
echo "/x/y/z/x" | awk '{ gsub("/", "_") ; print $0 }'
In your case you want to make a copy of the value before changing it:
echo "/x/y/z/x" | awk '{ c=$0; gsub("/", "_", c) ; system( "echo " $0 " " c )}'
Linq.Min()
/ Linq.Max()
approach:
DateTime date1 = new DateTime(2000,1,1);
DateTime date2 = new DateTime(2001,1,1);
DateTime minresult = new[] { date1,date2 }.Min();
DateTime maxresult = new[] { date1,date2 }.Max();
In my case, the problem was with a scatterplot of a dataframe X[]:
ax.scatter(X[:,0],X[:,1],c=colors,
cmap=CMAP, edgecolor='k', s=40) #c=y[:,0],
#ValueError: setting an array element with a sequence.
#Fix with .toarray():
colors = 'br'
y = label_binarize(y, classes=['Irrelevant','Relevant'])
ax.scatter(X[:,0].toarray(),X[:,1].toarray(),c=colors,
cmap=CMAP, edgecolor='k', s=40)
open dconf Editor and go to org > gnome > desktop > application > terminal and change gnome-terminal to terminator
Easy,Tested and working 100%
Import webkit :
import WebKit
Assign IBOutlet to webview:
var webView : WKWebView!
set delegate:
class ViewController: UIViewController , WKNavigationDelegate{
Write code on viewDidLoad():
// loading URL :
let myBlog = "https://stackoverflow.com/users/4600136/mr-javed-multani?tab=profile"
let url = NSURL(string: myBlog)
let request = NSURLRequest(url: url! as URL)
// init and load request in webview.
webView = WKWebView(frame: self.view.frame)
webView.navigationDelegate = self
webView.load(request as URLRequest)
self.view.addSubview(webView)
self.view.sendSubview(toBack: webView)
Write delegate methods:
//MARK:- WKNavigationDelegate
func webView(webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: NSError) {
print(error.localizedDescription)
}
func webView(webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
print("Strat to load")
}
func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
print("finish to load")
}
simply you can use jquery plugin to get/set the content of the div.
var divContent = $('#'DIV1).html(); $('#'DIV2).html(divContent );
for this you need to include jquery library.
If you have a bitmap image and you want to use it in drawable, like
Bitmap contact_pic; //a picture to show in drawable
drawable = new BitmapDrawable(contact_pic);
foreach only works with a single array. To step through multiple arrays, it's better to use the each() function in a while loop:
while(($code = each($codes)) && ($name = each($names))) {
echo '<option value="' . $code['value'] . '">' . $name['value'] . '</option>';
}
each() returns information about the current key and value of the array and increments the internal pointer by one, or returns false if it has reached the end of the array. This code would not be dependent upon the two arrays having identical keys or having the same sort of elements. The loop terminates when one of the two arrays is finished.
A convenient function for saving plots is ggsave()
, which can automatically guess the device type based on the file extension, and smooths over differences between devices. You save with a certain size and units like this:
ggsave("mtcars.png", width = 20, height = 20, units = "cm")
In R markdown, figure size can be specified by chunk:
```{r, fig.width=6, fig.height=4}
plot(1:5)
```
regexObject.test( String ) is faster than string.match( RegExp ).
The MDN site describes the format for document.cookie, and has an example regex to grab a cookie (document.cookie.replace(/(?:(?:^|.*;\s*)test2\s*\=\s*([^;]*).*$)|^.*$/, "$1");
). Based on that, I'd go for this:
/^(.*;)?\s*cookie1\s*=/.test(document.cookie);
The question seems to ask for a solution which returns false when the cookie is set, but empty. In that case:
/^(.*;)?\s*cookie1\s*=\s*[^;]/.test(document.cookie);
Tests
function cookieExists(input) {return /^(.*;)?\s*cookie1\s*=/.test(input);}
function cookieExistsAndNotBlank(input) {return /^(.*;)?\s*cookie1\s*=\s*[^;]/.test(input);}
var testCases = ['cookie1=;cookie1=345534;', 'cookie1=345534;cookie1=;', 'cookie1=345534;', ' cookie1 = 345534; ', 'cookie1=;', 'cookie123=345534;', 'cookie=345534;', ''];
console.table(testCases.map(function(s){return {'Test String': s, 'cookieExists': cookieExists(s), 'cookieExistsAndNotBlank': cookieExistsAndNotBlank(s)}}));
The default parser can parse your input. So you don't need a custom formatter and
String dateTime = "2012-02-22T02:06:58.147Z";
ZonedDateTime d = ZonedDateTime.parse(dateTime);
works as expected.
You don't need to set the value at all. ng-model takes care of it all:
Here's the fiddle for this: http://jsfiddle.net/terebentina/9mFpp/
graywh's answer is the best if it actually locales different in displaying the field name. In the case of a dynamic field name (based on other fields to display), I would do something like this
<% object.errors.each do |attr, msg| %>
<li>
<% case attr.to_sym %>
<% when :song_rep_xyz %>
<%= #display error how you want here %>
<% else %>
<%= object.errors.full_message(attr, msg) %>
<% end %>
</li>
<% end %>
the full_message method on the else is what rails use inside of full_messages method, so it will give out the normal Rails errors for other cases (Rails 3.2 and up)
Something like this worked for me (references columns C and D from the row 8 till the end of the columns, in Excel 2013 if relevant):
=SUMIFS(INDIRECT(ADDRESS(ROW(D$8), COLUMN())&":"&ADDRESS(ROWS($C:$C), COLUMN())),INDIRECT("C$8:C"&ROWS($C:$C)),$C$2)
I converted Sam Wirch's guide to swift and it worked well for me, although there's some very slight "squishing" in the final image that I couldn't resolve.
func resizedCroppedImage(image: UIImage, newSize:CGSize) -> UIImage {
var ratio: CGFloat = 0
var delta: CGFloat = 0
var offset = CGPointZero
if image.size.width > image.size.height {
ratio = newSize.width / image.size.width
delta = (ratio * image.size.width) - (ratio * image.size.height)
offset = CGPointMake(delta / 2, 0)
} else {
ratio = newSize.width / image.size.height
delta = (ratio * image.size.height) - (ratio * image.size.width)
offset = CGPointMake(0, delta / 2)
}
let clipRect = CGRectMake(-offset.x, -offset.y, (ratio * image.size.width) + delta, (ratio * image.size.height) + delta)
UIGraphicsBeginImageContextWithOptions(newSize, true, 0.0)
UIRectClip(clipRect)
image.drawInRect(clipRect)
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage
}
If anyone wants the objective c version, it's on his website.
h2.text-left{
position:relative;
top:50%;
transform: translateY(-50%);
-webkit-transform: translateY(-50%);
-ms-transform: translateY(-50%);
}
Explanation:
The top:50% style essentially pushes the header element down 50% from the top of the parent element. The translateY stylings also act in a similar manner by moving then element down 50% from the top.
Please note that this works well for headers with 1 (maybe 2) lines of text as this simply moves the top of the header element down 50% and then the rest of the content fills in below that, which means that with multiple lines of text it would appear to be slightly below vertically aligned.
A possible fix for multiple lines would be to use a percentage slightly less than 50%.
The double arrow operator, =>
, is used as an access mechanism for arrays. This means that what is on the left side of it will have a corresponding value of what is on the right side of it in array context. This can be used to set values of any acceptable type into a corresponding index of an array. The index can be associative (string based) or numeric.
$myArray = array(
0 => 'Big',
1 => 'Small',
2 => 'Up',
3 => 'Down'
);
The object operator, ->
, is used in object scope to access methods and properties of an object. It’s meaning is to say that what is on the right of the operator is a member of the object instantiated into the variable on the left side of the operator. Instantiated is the key term here.
// Create a new instance of MyObject into $obj
$obj = new MyObject();
// Set a property in the $obj object called thisProperty
$obj->thisProperty = 'Fred';
// Call a method of the $obj object named getProperty
$obj->getProperty();
I've been wrestling with the same issue today for a checkbox that binds to a nullable bool, and since I can't change my model (not my code) I had to come up with a better way of handling this. It's a bit brute force, but it should work for 99% of cases I might encounter. You'd obviously have to do some manual population of valid attributes for each input type, but I think I've gotten all of them for checkbox.
In my Boolean.cshtml editor template:
@model bool?
@{
var attribs = new Dictionary<string, object>();
var validAttribs = new string[] {"style", "class", "checked", "@class",
"classname","id", "required", "value", "disabled", "readonly",
"accesskey", "lang", "tabindex", "title", "onblur", "onfocus",
"onclick", "onchange", "ondblclick", "onmousedown", "onmousemove",
"onmouseout", "onmouseover", "onmouseup", "onselect"};
foreach (var item in ViewData)
{
if (item.Key.ToLower().IndexOf("data_") == 0 || item.Key.ToLower().IndexOf("aria_") == 0)
{
attribs.Add(item.Key.Replace('_', '-'), item.Value);
}
else
{
if (validAttribs.Contains(item.Key.ToLower()))
{
attribs.Add(item.Key, item.Value);
}
}
}
}
@Html.CheckBox("", Model.GetValueOrDefault(), attribs)
" ".join(my_list)
you need to join with a space not an empty string ...
You can use pandas.Dataframe.isin
.
pandas.Dateframe.isin
will return boolean values depending on whether each element is inside the list a
or not. You then invert this with the ~
to convert True
to False
and vice versa.
import pandas as pd
a = ['2015-01-01' , '2015-02-01']
df = pd.DataFrame(data={'date':['2015-01-01' , '2015-02-01', '2015-03-01' , '2015-04-01', '2015-05-01' , '2015-06-01']})
print(df)
# date
#0 2015-01-01
#1 2015-02-01
#2 2015-03-01
#3 2015-04-01
#4 2015-05-01
#5 2015-06-01
df = df[~df['date'].isin(a)]
print(df)
# date
#2 2015-03-01
#3 2015-04-01
#4 2015-05-01
#5 2015-06-01
This really isn't too hard to implement with ModelForms. So lets say you have Forms A, B, and C. You print out each of the forms and the page and now you need to handle the POST.
if request.POST():
a_valid = formA.is_valid()
b_valid = formB.is_valid()
c_valid = formC.is_valid()
# we do this since 'and' short circuits and we want to check to whole page for form errors
if a_valid and b_valid and c_valid:
a = formA.save()
b = formB.save(commit=False)
c = formC.save(commit=False)
b.foreignkeytoA = a
b.save()
c.foreignkeytoB = b
c.save()
Here are the docs for custom validation.
Maybe this old topic but i found this library is very helpful and easy to use
example for using it in android
Bitmap myBitmap = QRCode.from("www.example.org").bitmap();
ImageView myImage = (ImageView) findViewById(R.id.imageView);
myImage.setImageBitmap(myBitmap);
Have you tried:
sudo apt-get install ruby1.8-dev
I use the following Interactivity Behavior to provide an unloading event to WPF UserControls. You can include the behavior in the UserControls XAML. So you can have the functionality without placing the logic it in every single UserControl.
XAML declaration:
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
<i:Interaction.Behaviors>
<behaviors:UserControlSupportsUnloadingEventBehavior UserControlClosing="UserControlClosingHandler" />
</i:Interaction.Behaviors>
CodeBehind handler:
private void UserControlClosingHandler(object sender, EventArgs e)
{
// to unloading stuff here
}
Behavior Code:
/// <summary>
/// This behavior raises an event when the containing window of a <see cref="UserControl"/> is closing.
/// </summary>
public class UserControlSupportsUnloadingEventBehavior : System.Windows.Interactivity.Behavior<UserControl>
{
protected override void OnAttached()
{
AssociatedObject.Loaded += UserControlLoadedHandler;
}
protected override void OnDetaching()
{
AssociatedObject.Loaded -= UserControlLoadedHandler;
var window = Window.GetWindow(AssociatedObject);
if (window != null)
window.Closing -= WindowClosingHandler;
}
/// <summary>
/// Registers to the containing windows Closing event when the UserControl is loaded.
/// </summary>
private void UserControlLoadedHandler(object sender, RoutedEventArgs e)
{
var window = Window.GetWindow(AssociatedObject);
if (window == null)
throw new Exception(
"The UserControl {0} is not contained within a Window. The UserControlSupportsUnloadingEventBehavior cannot be used."
.FormatWith(AssociatedObject.GetType().Name));
window.Closing += WindowClosingHandler;
}
/// <summary>
/// The containing window is closing, raise the UserControlClosing event.
/// </summary>
private void WindowClosingHandler(object sender, CancelEventArgs e)
{
OnUserControlClosing();
}
/// <summary>
/// This event will be raised when the containing window of the associated <see cref="UserControl"/> is closing.
/// </summary>
public event EventHandler UserControlClosing;
protected virtual void OnUserControlClosing()
{
var handler = UserControlClosing;
if (handler != null)
handler(this, EventArgs.Empty);
}
}
In my case, It was returning one output parameter and was not Returning any value.
So changed it to
param.Direction = ParameterDirection.Output;
command.ExecuteScalar();
and then it was throwing size error. so had to set the size as well
SqlParameter param = new SqlParameter("@Name",SqlDbType.NVarChar);
param.Size = 10;
I ended up creating my own plugin. Here it is in case this helps anyone:
(function($) {
$.fn.countTo = function(options) {
// merge the default plugin settings with the custom options
options = $.extend({}, $.fn.countTo.defaults, options || {});
// how many times to update the value, and how much to increment the value on each update
var loops = Math.ceil(options.speed / options.refreshInterval),
increment = (options.to - options.from) / loops;
return $(this).each(function() {
var _this = this,
loopCount = 0,
value = options.from,
interval = setInterval(updateTimer, options.refreshInterval);
function updateTimer() {
value += increment;
loopCount++;
$(_this).html(value.toFixed(options.decimals));
if (typeof(options.onUpdate) == 'function') {
options.onUpdate.call(_this, value);
}
if (loopCount >= loops) {
clearInterval(interval);
value = options.to;
if (typeof(options.onComplete) == 'function') {
options.onComplete.call(_this, value);
}
}
}
});
};
$.fn.countTo.defaults = {
from: 0, // the number the element should start at
to: 100, // the number the element should end at
speed: 1000, // how long it should take to count between the target numbers
refreshInterval: 100, // how often the element should be updated
decimals: 0, // the number of decimal places to show
onUpdate: null, // callback method for every time the element is updated,
onComplete: null, // callback method for when the element finishes updating
};
})(jQuery);
Here's some sample code of how to use it:
<script type="text/javascript"><!--
jQuery(function($) {
$('.timer').countTo({
from: 50,
to: 2500,
speed: 1000,
refreshInterval: 50,
onComplete: function(value) {
console.debug(this);
}
});
});
//--></script>
<span class="timer"></span>
View the demo on JSFiddle: http://jsfiddle.net/YWn9t/
you can also use a hashmap for this
@GetMapping
public HashMap<String, Object> get() {
HashMap<String, Object> map = new HashMap<>();
map.put("key1", "value1");
map.put("results", somePOJO);
return map;
}
Just use "javascript:" in your action attribute of form if you are not using action.
Now iOS 7 devices – are always returning a MAC address of 02:00:00:00:00:00.
So better use [UIDevice identifierForVendor].
so better to call this method to get app specific unique key
Category will more suitable
import "UIDevice+Identifier.h"
- (NSString *) identifierForVendor1
{
if ([[UIDevice currentDevice] respondsToSelector:@selector(identifierForVendor)]) {
return [[[UIDevice currentDevice] identifierForVendor] UUIDString];
}
return @"";
}
Now call above method to get unique address
NSString *like_UDID=[NSString stringWithFormat:@"%@",
[[UIDevice currentDevice] identifierForVendor1]];
NSLog(@"%@",like_UDID);
Just to complement @Marcus Ekwall 's answer. Doing like this will get only anchor links. And you aren't going to have problems if you have a mix of anchor links and regular ones.
jQuery(document).ready(function(jQuery) {
var topMenu = jQuery("#top-menu"),
offset = 40,
topMenuHeight = topMenu.outerHeight()+offset,
// All list items
menuItems = topMenu.find('a[href*="#"]'),
// Anchors corresponding to menu items
scrollItems = menuItems.map(function(){
var href = jQuery(this).attr("href"),
id = href.substring(href.indexOf('#')),
item = jQuery(id);
//console.log(item)
if (item.length) { return item; }
});
// so we can get a fancy scroll animation
menuItems.click(function(e){
var href = jQuery(this).attr("href"),
id = href.substring(href.indexOf('#'));
offsetTop = href === "#" ? 0 : jQuery(id).offset().top-topMenuHeight+1;
jQuery('html, body').stop().animate({
scrollTop: offsetTop
}, 300);
e.preventDefault();
});
// Bind to scroll
jQuery(window).scroll(function(){
// Get container scroll position
var fromTop = jQuery(this).scrollTop()+topMenuHeight;
// Get id of current scroll item
var cur = scrollItems.map(function(){
if (jQuery(this).offset().top < fromTop)
return this;
});
// Get the id of the current element
cur = cur[cur.length-1];
var id = cur && cur.length ? cur[0].id : "";
menuItems.parent().removeClass("active");
if(id){
menuItems.parent().end().filter("[href*='#"+id+"']").parent().addClass("active");
}
})
})
Basically i replaced
menuItems = topMenu.find("a"),
by
menuItems = topMenu.find('a[href*="#"]'),
To match all links with anchor somewhere, and changed all that what was necessary to make it work with this
See it in action on jsfiddle
If it "doesn't care about the output", couldn't the exec to the script be called with the &
to background the process?
EDIT - incorporating what @AdamTheHut commented to this post, you can add this to a call to exec
:
" > /dev/null 2>/dev/null &"
That will redirect both stdio
(first >
) and stderr
(2>
) to /dev/null
and run in the background.
There are other ways to do the same thing, but this is the simplest to read.
An alternative to the above double-redirect:
" &> /dev/null &"
That's micro optimization and premature optimization, which are evil. Rather worry about readabililty and maintainability of the code in question. If there are more than two if/else
blocks glued together or its size is unpredictable, then you may highly consider a switch
statement.
Alternatively, you can also grab Polymorphism. First create some interface:
public interface Action {
void execute(String input);
}
And get hold of all implementations in some Map
. You can do this either statically or dynamically:
Map<String, Action> actions = new HashMap<String, Action>();
Finally replace the if/else
or switch
by something like this (leaving trivial checks like nullpointers aside):
actions.get(name).execute(input);
It might be microslower than if/else
or switch
, but the code is at least far better maintainable.
As you're talking about webapplications, you can make use of HttpServletRequest#getPathInfo()
as action key (eventually write some more code to split the last part of pathinfo away in a loop until an action is found). You can find here similar answers:
If you're worrying about Java EE webapplication performance in general, then you may find this article useful as well. There are other areas which gives a much more performance gain than only (micro)optimizing the raw Java code.
On the Mac
version of Android Studio Beta 1.2
, it's under
Android Studio->preferences->Build, Execution, Deployment->Compiler
The reason I think is that ProgressDialog
is attached to the activity that props up the ProgressDialog
as the dialog cannot remain after the activity gets destroyed so it needs to be passed this
(ActivityContext) that also gets destroyed with the activity whereas the ApplicationContext remains even after the activity gets destroyed.
I put my images in a subdirectory of the assets folder. Whenever I add new images, I restart the application and it works fine.
assets:
- assets/sub_folder/
I do this so that I don't have to list each asset name.
To get the address of p do:
int **pp = &p;
and you can go on:
int ***ppp = &pp;
int ****pppp = &ppp;
...
or, only in C++11, you can do:
auto pp = std::addressof(p);
To print the address in C, most compilers support %p
, so you can simply do:
printf("addr: %p", pp);
otherwise you need to cast it (assuming a 32 bit platform)
printf("addr: 0x%u", (unsigned)pp);
In C++ you can do:
cout << "addr: " << pp;
Expanding on eumiro's comment, normally tuple(l)
will convert a list l
into a tuple:
In [1]: l = [4,5,6]
In [2]: tuple
Out[2]: <type 'tuple'>
In [3]: tuple(l)
Out[3]: (4, 5, 6)
However, if you've redefined tuple
to be a tuple rather than the type
tuple
:
In [4]: tuple = tuple(l)
In [5]: tuple
Out[5]: (4, 5, 6)
then you get a TypeError since the tuple itself is not callable:
In [6]: tuple(l)
TypeError: 'tuple' object is not callable
You can recover the original definition for tuple
by quitting and restarting your interpreter, or (thanks to @glglgl):
In [6]: del tuple
In [7]: tuple
Out[7]: <type 'tuple'>
In this part of your SP:
IF @DateFirst <> '' and @DateLast <> ''
set @FinalSQL = @FinalSQL
+ ' or convert (Date,DateLog) >= ''' + @DateFirst
+ ' and convert (Date,DateLog) <=''' + @DateLast
you are trying to concatenate strings and datetimes.
As the datetime
type has higher priority than varchar
/nvarchar
, the +
operator, when it happens between a string and a datetime, is interpreted as addition, not as concatenation, and the engine then tries to convert your string parts (' or convert (Date,DateLog) >= '''
and others) to datetime or numeric values. And fails.
That doesn't happen if you omit the last two parameters when invoking the procedure, because the condition evaluates to false and the offending statement isn't executed.
To amend the situation, you need to add explicit casting of your datetime variables to strings:
set @FinalSQL = @FinalSQL
+ ' or convert (Date,DateLog) >= ''' + convert(date, @DateFirst)
+ ' and convert (Date,DateLog) <=''' + convert(date, @DateLast)
You'll also need to add closing single quotes:
set @FinalSQL = @FinalSQL
+ ' or convert (Date,DateLog) >= ''' + convert(date, @DateFirst) + ''''
+ ' and convert (Date,DateLog) <=''' + convert(date, @DateLast) + ''''
You have to provide the full path that you want to import.
import com.my.stuff.main.Main; import com.my.stuff.second.*;
So, in your main class, you'd have:
package com.my.stuff.main import com.my.stuff.second.Second; // THIS IS THE IMPORTANT LINE FOR YOUR QUESTION class Main { public static void main(String[] args) { Second second = new Second(); second.x(); } }
EDIT: adding example in response to Shawn D's comment
There is another alternative, as Shawn D points out, where you can specify the full package name of the object that you want to use. This is very useful in two locations. First, if you're using the class exactly once:
class Main {
void function() {
int x = my.package.heirarchy.Foo.aStaticMethod();
another.package.heirarchy.Baz b = new another.package.heirarchy.Bax();
}
}
Alternatively, this is useful when you want to differentiate between two classes with the same short name:
class Main {
void function() {
java.util.Date utilDate = ...;
java.sql.Date sqlDate = ...;
}
}
On my linux system to get just the filenames
diff -q /dir1 /dir2|cut -f2 -d' '
If you are using Android Studio 3.0 or above make sure your project build.gradle should have content similar to-
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
Note- position really matters add google() before jcenter()
And for below Android Studio 3.0 and starting from support libraries 26.+ your project build.gradle must look like this-
allprojects {
repositories {
jcenter()
maven {
url "https://maven.google.com"
}
}
}
check these links below for more details-
use this method:
private ArrayList<myClass> sortList(ArrayList<myClass> list) {
if (list != null && list.size() > 1) {
Collections.sort(list, new Comparator<myClass>() {
public int compare(myClass o1, myClass o2) {
if (o1.getsortnumber() == o2.getsortnumber()) return 0;
return o1.getsortnumber() < o2.getsortnumber() ? 1 : -1;
}
});
}
return list;
}
`
and use: mySortedlist = sortList(myList);
No need to implement comparator in your class.
If you want inverse order swap 1
and -1
Its based on from which file you are trying to access those files.
If it is in the same folder where your working project file is, then you can use just the file name. no need of path.
If it is in the another folder which is under the same parent folder of your working project file then you can use location like in the following /javascript/sample.js
In your example if you are trying to access your js file from your html file you can use the following location
../javascript/sample.js
the prefix../ will go to the parent folder of the file(Folder upward journey)
for p in [0-9][0-9][0-9];do
(
cd $p
for f in [0-9][0-9][0-9][0-9]*.txt;do
ls $f; # Your operands
done
)
done
Took me a while figuring this one out, leave it as type="text"
, and add onfocus="(this.type='date')"
, just as shown above.
I even like the onBlur idea mentioned above
<input placeholder="Date" class="textbox-n" type="text" onfocus="(this.type='date')" onblur="(this.type='text')" id="date">
Hope this helps anyone who didn't quite gather whats going on above
Both are logical AND operations. The && though, is a "short-circuit" operator. From the MATLAB docs:
They are short-circuit operators in that they evaluate their second operand only when the result is not fully determined by the first operand.
See more here.
So, what output does this code produce?
fruits = [ 'apple', 'pear', 'carrot', 'banana' ]
found = False
try:
for i in range(len(fruit)):
if fruits[i] == 'apple':
found = true
except:
pass
if found:
print "Found an apple"
else:
print "No apples in list"
Now imagine the try
-except
block is hundreds of lines of calls to a complex object hierarchy, and is itself called in the middle of large program's call tree. When the program goes wrong, where do you start looking?
FileCopy "1.mis", "1.txt"
This worked for me endDate: "today"
$('#datepicker').datepicker({
format: "dd/mm/yyyy",
autoclose: true,
orientation: "top",
endDate: "today"
});
this remove orange frame in chrome from all and any element no matter what and where is it
*:focus {
outline: none;
}
PHP 7 improved query.........
$sql = mysqli_query($conn, "SELECT * from users WHERE user_uid = '$uid'");
if (mysqli_num_rows($sql) > 0) {
echo 'Username taken.';
}
(Linux/WSL at least) From the browser at bitbucket.org, create an empty repo with the same name as your local repo, follow the instructions proposed by bitbucket for importing a local repo (two commands to type).
First, make sure you have Tkinter module installed.
sudo apt-get install python-tk
In python 2 the package name is Tkinter not tkinter.
from Tkinter import *
ref: http://www.techinfected.net/2015/09/how-to-install-and-use-tkinter-in-ubuntu-debian-linux-mint.html
Excellent answer from above turned into a simple utility method.
private Uri buildURI(String url, Map<String, String> params) {
// build url with parameters.
Uri.Builder builder = Uri.parse(url).buildUpon();
for (Map.Entry<String, String> entry : params.entrySet()) {
builder.appendQueryParameter(entry.getKey(), entry.getValue());
}
return builder.build();
}
As noted by Mattias Nordqvist in the comments below, you can also select the radio button option "Run whether user is logged on or not". When saving the task, you will be prompted once for the user password. bambams noted that this wouldn't grant System permissions to the process, and also seems to hide the command window.
It's not an obvious solution, but to make a Scheduled Task run in the background, change the User running the task to "SYSTEM", and nothing will appear on your screen.
In my opinion using a BroadcastReceiver
is a cleaner way to cancel a Notification:
In AndroidManifest.xml:
<receiver
android:name=.NotificationCancelReceiver" >
<intent-filter android:priority="999" >
<action android:name="com.example.cancel" />
</intent-filter>
</receiver>
In java File:
Intent cancel = new Intent("com.example.cancel");
PendingIntent cancelP = PendingIntent.getBroadcast(context, 0, cancel, PendingIntent.FLAG_CANCEL_CURRENT);
NotificationCompat.Action actions[] = new NotificationCompat.Action[1];
NotificationCancelReceiver
public class NotificationCancelReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//Cancel your ongoing Notification
};
}
You have already staged the changes (presumably by running git add
), so in order to get their diff, you need to run:
git diff --cached
(A plain git diff
will only show unstaged changes.)
For example:
I fixed the generation of UUID (or sequences) with Hibernate using @PrePersist
annotation:
@PrePersist
public void initializeUUID() {
if (uuid == null) {
uuid = UUID.randomUUID().toString();
}
}
an alternative would be to do something like:
SELECT
CAST(P0.seconds as bigint) as seconds
FROM
(
SELECT
seconds
FROM
TableName
WHERE
ISNUMERIC(seconds) = 1
) P0
Write the queue job information in long format to text file
qstat -f > queue.txt
Grep job names
grep 'Job_Name' queue.txt
If you want the latest Beta, it will not be in the AppStore. Instead you have to login to https://developer.apple.com and download from there.
There are 2 main options...
Object mapping. When you deserialize JSON data to a number of instances of:
1.1. Some predefined classes, like Maps. In this case, you don't have to design your own POJO classes. Some libraries: org.json.simple https://www.mkyong.com/java/json-simple-example-read-and-write-json/
1.2. Your own POJO classes. You have to design your own POJO classes to present JSON data, but this may be helpful if you are going to use them into your business logic as well. Some libraries: Gson, Jackson (see http://tutorials.jenkov.com/java-json/index.html)
The main backwards of the mapping is that it leads to intensive memory allocation (and GC pressure) and CPU utilization.
I would not use an array in this case. Instead I would use a StringCollection.
using System.Collections.Specialized;
private StringCollection ColeccionDeCortes(string Path)
{
DirectoryInfo X = new DirectoryInfo(Path);
FileInfo[] listaDeArchivos = X.GetFiles();
StringCollection Coleccion = new StringCollection();
foreach (FileInfo FI in listaDeArchivos)
{
Coleccion.Add( FI.Name );
}
return Coleccion;
}
A work around you can try is defining a getInstance()
method in your interface so the implementer is aware of what parameters need to be handled. It isn't as solid as an abstract class, but it allows more flexibility as being an interface.
However this workaround does require you to use the getInstance()
to instantiate all objects of this interface.
E.g.
public interface Module {
Module getInstance(Receiver receiver);
}
Integrating OpenCV v3.1.0 into Android Studio v1.4.1, instructions with additional detail and this-is-what-you-should-get type screenshots.
Most of the credit goes to Kiran, Kool, 1", and SteveLiles over at opencv.org for their explanations. I'm adding this answer because I believe that Android Studio's interface is now stable enough to work with on this type of integration stuff. Also I have to write these instructions anyway for our project.
Experienced A.S. developers will find some of this pedantic. This answer is targeted at people with limited experience in Android Studio.
Create a new Android Studio project using the project wizard (Menu:/File/New Project):
Blank Activity named MainActivity
You should have a cvtest1 directory where this project is stored. (the title bar of Android studio shows you where cvtest1 is when you open the project)
Verify that your app runs correctly. Try changing something like the "Hello World" text to confirm that the build/test cycle is OK for you. (I'm testing with an emulator of an API 19 device).
Download the OpenCV package for Android v3.1.0 and unzip it in some temporary directory somewhere. (Make sure it is the package specifically for Android and not just the OpenCV for Java package.) I'll call this directory "unzip-dir" Below unzip-dir you should have a sdk/native/libs directory with subdirectories that start with things like arm..., mips... and x86... (one for each type of "architecture" Android runs on)
From Android Studio import OpenCV into your project as a module: Menu:/File/New/Import_Module:
Click on next. You get a screen with three checkboxes and questions about jars, libraries and import options. All three should be checked. Click on Finish.
Android Studio starts to import the module and you are shown an import-summary.txt file that has a list of what was not imported (mostly javadoc files) and other pieces of information.
But you also get an error message saying failed to find target with hash string 'android-14'.... This happens because the build.gradle file in the OpenCV zip file you downloaded says to compile using android API version 14, which by default you don't have with Android Studio v1.4.1.
Open the project structure dialogue (Menu:/File/Project_Structure). Select the "app" module, click on the Dependencies tab and add :openCVLibrary310 as a Module Dependency. When you select Add/Module_Dependency it should appear in the list of modules you can add. It will now show up as a dependency but you will get a few more cannot-find-android-14 errors in the event log.
Look in the build.gradle file for your app module. There are multiple build.gradle files in an Android project. The one you want is in the cvtest1/app directory and from the project view it looks like build.gradle (Module: app). Note the values of these four fields:
Your project now has a cvtest1/OpenCVLibrary310 directory but it is not visible from the project view:
Use some other tool, such as any file manager, and go to this directory. You can also switch the project view from Android to Project Files and you can find this directory as shown in this screenshot:
Inside there is another build.gradle file (it's highlighted in the above screenshot). Update this file with the four values from step 6.
Resynch your project and then clean/rebuild it. (Menu:/Build/Clean_Project) It should clean and build without errors and you should see many references to :openCVLibrary310 in the 0:Messages screen.
At this point the module should appear in the project hierarchy as openCVLibrary310, just like app. (Note that in that little drop-down menu I switched back from Project View to Android View ). You should also see an additional build.gradle file under "Gradle Scripts" but I find the Android Studio interface a little bit glitchy and sometimes it does not do this right away. So try resynching, cleaning, even restarting Android Studio.
You should see the openCVLibrary310 module with all the OpenCV functions under java like in this screenshot:
Copy the {unzip-dir}/sdk/native/libs directory (and everything under it) to your Android project, to cvtest1/OpenCVLibrary310/src/main/, and then rename your copy from libs to jniLibs. You should now have a cvtest1/OpenCVLibrary310/src/main/jniLibs directory. Resynch your project and this directory should now appear in the project view under openCVLibrary310.
Go to the onCreate method of MainActivity.java and append this code:
if (!OpenCVLoader.initDebug()) {
Log.e(this.getClass().getSimpleName(), " OpenCVLoader.initDebug(), not working.");
} else {
Log.d(this.getClass().getSimpleName(), " OpenCVLoader.initDebug(), working.");
}
Then run your application. You should see lines like this in the Android Monitor: (I don't know why that line with the error message is there)
Now try to actually use some openCV code. In the example below I copied a .jpg file to the cache directory of the cvtest1 application on the android emulator. The code below loads this image, runs the canny edge detection algorithm and then writes the results back to a .png file in the same directory.
Put this code just below the code from the previous step and alter it to match your own files/directories.
String inputFileName="simm_01";
String inputExtension = "jpg";
String inputDir = getCacheDir().getAbsolutePath(); // use the cache directory for i/o
String outputDir = getCacheDir().getAbsolutePath();
String outputExtension = "png";
String inputFilePath = inputDir + File.separator + inputFileName + "." + inputExtension;
Log.d (this.getClass().getSimpleName(), "loading " + inputFilePath + "...");
Mat image = Imgcodecs.imread(inputFilePath);
Log.d (this.getClass().getSimpleName(), "width of " + inputFileName + ": " + image.width());
// if width is 0 then it did not read your image.
// for the canny edge detection algorithm, play with these to see different results
int threshold1 = 70;
int threshold2 = 100;
Mat im_canny = new Mat(); // you have to initialize output image before giving it to the Canny method
Imgproc.Canny(image, im_canny, threshold1, threshold2);
String cannyFilename = outputDir + File.separator + inputFileName + "_canny-" + threshold1 + "-" + threshold2 + "." + outputExtension;
Log.d (this.getClass().getSimpleName(), "Writing " + cannyFilename);
Imgcodecs.imwrite(cannyFilename, im_canny);
Run your application. Your emulator should create a black and white "edge" image. You can use the Android Device Monitor to retrieve the output or write an activity to show it.
The Gotchas:
/var/lib/docker/containers/${container_id}
directory and edit hostconfig.json
PortBindings.HostPort
that you want the change.Android Studio 1.2.2 has moved the setting into the General
subfolder of Editor settings.
You can find the DMGs or XIPs for Xcode and other development tools on https://developer.apple.com/download/more/ (requires Apple ID to login).
You must login to have a valid session before downloading anything below.
*(Newest on top. For each minor version (6.3, 5.1, etc.) only the latest revision is kept in the list.)
*With Xcode 12.2, Apple introduces the term “Release Candidate” (RC) which replaces “GM seed” and indicates this version is near final.
Xcode 12
12.4 (requires a Mac with Apple silicon running macOS Big Sur 11 or later, or an Intel-based Mac running macOS Catalina 10.15.4 or later) (Latest as of 27-Jan-2021)
12.3 (requires a Mac with Apple silicon running macOS Big Sur 11 or later, or an Intel-based Mac running macOS Catalina 10.15.4 or later)
12.0.1 (Requires macOS 10.15.4 or later) (Latest as of 24-Sept-2020)
Xcode 11
11.7 (Latest as of Sept 02 2020)
11.4.1 (Requires macOS 10.15.2 or later)
11 (Requires macOS 10.14.4 or later)
Xcode 10 (unsupported for iTunes Connect)
Xcode 9
Xcode 8
Xcode 7
Xcode 6
Even Older Versions (unsupported for iTunes Connect)
foreach (Control field in container.Controls)
{
if (field is TextBox)
((TextBox)field).Clear();
else if (field is ComboBox)
((ComboBox)field).SelectedIndex=0;
else
dgView.DataSource = null;
ClearAllText(field);
}
You can also use the jQuery JavaScript framework:
To Hide Div Block
$(".divIDClass").hide();
To show Div Block
$(".divIDClass").show();
The difference is that
window.location = document.URL;
will not reload the page if there is a hash (#) in the URL (with or without something after it), whereas
window.location.reload();
will reload the page.
How about
user r = {"",{}};
or
user r = {"",{'\0'}};
or
user r = {"",std::vector<unsigned char>()};
or
user r;
You have to reference System.Configuration
via explorer (not only append using System.Configuration
). Then you can write:
string xmlDataDirectory =
System.Configuration.ConfigurationManager.AppSettings.Get("xmlDataDirectory");
Tested with VS2010 (thanks to www.developpez.net). Hope this helps.
Note that URI encoding is good for the query part, it's not good for the domain. The domain gets encoded using punycode. You need a library like URI.js to convert between a URI and IRI (Internationalized Resource Identifier).
This is correct if you plan on using the string later as a query string:
> encodeURIComponent("http://examplé.org/rosé?rosé=rosé")
'http%3A%2F%2Fexampl%C3%A9.org%2Fros%C3%A9%3Fros%C3%A9%3Dros%C3%A9'
If you don't want ASCII characters like /
, :
and ?
to be escaped, use encodeURI
instead:
> encodeURI("http://examplé.org/rosé?rosé=rosé")
'http://exampl%C3%A9.org/ros%C3%A9?ros%C3%A9=ros%C3%A9'
However, for other use-cases, you might need uri-js instead:
> var URI = require("uri-js");
undefined
> URI.serialize(URI.parse("http://examplé.org/rosé?rosé=rosé"))
'http://xn--exampl-gva.org/ros%C3%A9?ros%C3%A9=ros%C3%A9'
The javadoc for Math.atan(double) is pretty clear that the returning value can range from -pi/2 to pi/2. So you need to compensate for that return value.
(based on anser from Hakan Fistik)
You can also set the postBuffer globally, which might be necessary, if you haven't checkout out the repository yet!
git config http.postBuffer 524288000