Without any libraries, you could do this instead:
def to_frequency_table(data):
frequencytable = {}
for key in data:
if key in frequencytable:
frequencytable[key] += 1
else:
frequencytable[key] = 1
return frequencytable
Example:
to_frequency_table([1,1,1,1,2,3,4,4])
>>> {1: 4, 2: 1, 3: 1, 4: 2}
Here is a way to do it in the shell:
FIELD=2
cut -f $FIELD * | sort| uniq -c |sort -nr
This is the sort of thing bash is great at.
You can use list comprehension on a dataframe to count frequencies of the columns as such
[my_series[c].value_counts() for c in list(my_series.select_dtypes(include=['O']).columns)]
Breakdown:
my_series.select_dtypes(include=['O'])
Selects just the categorical data
list(my_series.select_dtypes(include=['O']).columns)
Turns the columns from above into a list
[my_series[c].value_counts() for c in list(my_series.select_dtypes(include=['O']).columns)]
Iterates through the list above and applies value_counts() to each of the columns
Here 2 ways to do it:
set.seed(1)
tt <- sample(letters,100,rep=TRUE)
## using table
table(tt)
tt
a b c d e f g h i j k l m n o p q r s t u v w x y z
2 3 3 3 2 4 6 1 6 5 6 4 7 2 2 2 5 4 5 3 8 4 5 4 3 1
## using tapply
tapply(tt,tt,length)
a b c d e f g h i j k l m n o p q r s t u v w x y z
2 3 3 3 2 4 6 1 6 5 6 4 7 2 2 2 5 4 5 3 8 4 5 4 3 1
Using Counter would be the best way, but if you don't want to do that, you can implement it yourself this way.
# The list you already have
word_list = ['words', ..., 'other', 'words']
# Get a set of unique words from the list
word_set = set(word_list)
# create your frequency dictionary
freq = {}
# iterate through them, once per unique word.
for word in word_set:
freq[word] = word_list.count(word) / float(len(word_list))
freq will end up with the frequency of each word in the list you already have.
You need float
in there to convert one of the integers to a float, so the resulting value will be a float.
Edit:
If you can't use a dict or set, here is another less efficient way:
# The list you already have
word_list = ['words', ..., 'other', 'words']
unique_words = []
for word in word_list:
if word not in unique_words:
unique_words += [word]
word_frequencies = []
for word in unique_words:
word_frequencies += [float(word_list.count(word)) / len(word_list)]
for i in range(len(unique_words)):
print(unique_words[i] + ": " + word_frequencies[i])
The indicies of unique_words
and word_frequencies
will match.
Despite the many answers, one more approach which uses prop.table
in combination with dplyr
or data.table
.
library("dplyr")
mtcars %>%
group_by(am, gear) %>%
summarise(n = n()) %>%
mutate(freq = prop.table(n))
library("data.table")
cars_dt <- as.data.table(mtcars)
cars_dt[, .(n = .N), keyby = .(am, gear)][, freq := prop.table(n) , by = "am"]
Without defaultdict:
words = "apple banana apple strawberry banana lemon"
my_count = {}
for word in words.split():
try: my_count[word] += 1
except KeyError: my_count[word] = 1
Note: You should sort the list before using groupby
.
You can use groupby
from itertools
package if the list is an ordered list.
a = [1,1,1,1,2,2,2,2,3,3,4,5,5]
from itertools import groupby
[len(list(group)) for key, group in groupby(a)]
Output:
[4, 4, 2, 1, 2]
update: Note that sorting takes O(n log(n)) time.
The simple way of doing this would be (assuming your list is in 'l'):
>>> counter = {}
>>> for i in l: counter[i] = counter.get(i, 0) + 1
>>> sorted([ (freq,word) for word, freq in counter.items() ], reverse=True)[:3]
[(6, 'Jellicle'), (5, 'Cats'), (3, 'to')]
Complete sample:
>>> l = ['Jellicle', 'Cats', 'are', 'black', 'and', 'white,', 'Jellicle', 'Cats', 'are', 'rather', 'small;', 'Jellicle', 'Cats', 'are', 'merry', 'and', 'bright,', 'And', 'pleasant', 'to', 'hear', 'when', 'they', 'caterwaul.', 'Jellicle', 'Cats', 'have', 'cheerful', 'faces,', 'Jellicle', 'Cats', 'have', 'bright', 'black', 'eyes;', 'They', 'like', 'to', 'practise', 'their', 'airs', 'and', 'graces', 'And', 'wait', 'for', 'the', 'Jellicle', 'Moon', 'to', 'rise.', '']
>>> counter = {}
>>> for i in l: counter[i] = counter.get(i, 0) + 1
...
>>> counter
{'and': 3, '': 1, 'merry': 1, 'rise.': 1, 'small;': 1, 'Moon': 1, 'cheerful': 1, 'bright': 1, 'Cats': 5, 'are': 3, 'have': 2, 'bright,': 1, 'for': 1, 'their': 1, 'rather': 1, 'when': 1, 'to': 3, 'airs': 1, 'black': 2, 'They': 1, 'practise': 1, 'caterwaul.': 1, 'pleasant': 1, 'hear': 1, 'they': 1, 'white,': 1, 'wait': 1, 'And': 2, 'like': 1, 'Jellicle': 6, 'eyes;': 1, 'the': 1, 'faces,': 1, 'graces': 1}
>>> sorted([ (freq,word) for word, freq in counter.items() ], reverse=True)[:3]
[(6, 'Jellicle'), (5, 'Cats'), (3, 'to')]
With simple I mean working in nearly every version of python.
if you don't understand some of the functions used in this sample, you can always do this in the interpreter (after pasting the code above):
>>> help(counter.get)
>>> help(sorted)
I've taken your code and adapted it with library react-form-with-constraints: https://codepen.io/tkrotoff/pen/LLraZp
const {
FormWithConstraints,
FieldFeedbacks,
FieldFeedback
} = ReactFormWithConstraints;
class Form extends React.Component {
handleChange = e => {
this.form.validateFields(e.target);
}
contactSubmit = e => {
e.preventDefault();
this.form.validateFields();
if (!this.form.isValid()) {
console.log('form is invalid: do not submit');
} else {
console.log('form is valid: submit');
}
}
render() {
return (
<FormWithConstraints
ref={form => this.form = form}
onSubmit={this.contactSubmit}
noValidate>
<div className="col-md-6">
<input name="name" size="30" placeholder="Name"
required onChange={this.handleChange}
className="form-control" />
<FieldFeedbacks for="name">
<FieldFeedback when="*" />
</FieldFeedbacks>
<input type="email" name="email" size="30" placeholder="Email"
required onChange={this.handleChange}
className="form-control" />
<FieldFeedbacks for="email">
<FieldFeedback when="*" />
</FieldFeedbacks>
<input name="phone" size="30" placeholder="Phone"
required onChange={this.handleChange}
className="form-control" />
<FieldFeedbacks for="phone">
<FieldFeedback when="*" />
</FieldFeedbacks>
<input name="address" size="30" placeholder="Address"
required onChange={this.handleChange}
className="form-control" />
<FieldFeedbacks for="address">
<FieldFeedback when="*" />
</FieldFeedbacks>
</div>
<div className="col-md-6">
<textarea name="comments" cols="40" rows="20" placeholder="Message"
required minLength={5} maxLength={50}
onChange={this.handleChange}
className="form-control" />
<FieldFeedbacks for="comments">
<FieldFeedback when="*" />
</FieldFeedbacks>
</div>
<div className="col-md-12">
<button className="btn btn-lg btn-primary">Send Message</button>
</div>
</FormWithConstraints>
);
}
}
Screenshot:
This is a quick hack. For a proper demo, check https://github.com/tkrotoff/react-form-with-constraints#examples
l=[['A', 1], ['B', 2], ['C', 3]]
d={}
for i,j in l:
d.setdefault(i,j)
print(d)
What about this? I never found this patter around but I was just trying to exclude one or more properties without the need of creating an extra object. This seems to do the job but there are some side effects I'm not able to see. For sure is not very readable.
const postData = {
token: 'secret-token',
publicKey: 'public is safe',
somethingElse: true,
};
const a = {
...(({token, ...rest} = postData) => (rest))(),
}
/**
a: {
publicKey: 'public is safe',
somethingElse: true,
}
*/
One addition to @Omid Ariyan's answer is permissions on directories. Add this after the for
loop's done
in his pre-commit
script.
for DIR in $(find ./ -mindepth 1 -type d -not -path "./.git" -not -path "./.git/*" | sed 's@^\./@@')
do
# Save the permissions of all the files in the index
echo $DIR";"`stat -c "%a;%U;%G" $DIR` >> $DATABASE
done
This will save directory permissions as well.
json.loads
take a string as input and returns a dictionary as output.
json.dumps
take a dictionary as input and returns a string as output.
With json.loads({"('Hello',)": 6, "('Hi',)": 5})
,
You are calling json.loads
with a dictionary as input.
You can fix it as follows (though I'm not quite sure what's the point of that):
d1 = {"('Hello',)": 6, "('Hi',)": 5}
s1 = json.dumps(d1)
d2 = json.loads(s1)
Preferences >> General >> Editors >> Text editors >> Spelling: Enconding
P.S.: Eclipse Indigo and Juno.
To get the memory usage of just your application (as opposed to the shared libraries it uses, you need to use the Linux smaps interface). This answer explains it well.
Since you've already stashed your changes, all you need is this one-liner:
git stash branch <branchname> [<stash>]
From the docs (https://www.kernel.org/pub/software/scm/git/docs/git-stash.html):
Creates and checks out a new branch named <branchname> starting from the commit at which the <stash> was originally created, applies the changes recorded in <stash> to the new working tree and index. If that succeeds, and <stash> is a reference of the form stash@{<revision>}, it then drops the <stash>. When no <stash> is given, applies the latest one.
This is useful if the branch on which you ran git stash save has changed enough that git stash apply fails due to conflicts. Since the stash is applied on top of the commit that was HEAD at the time git stash was run, it restores the originally stashed state with no conflicts.
Your query has 8 or possibly even 9 variables, ie. Name, Description etc. But the values, these things ---> '', '%s', '%s', '%s', '%s', '%s', '%s', '%s')"
, only total 7, the number of variables have to be the same as the values.
I had the same problem but I figured it out. Hopefully it will also work for you.
There is no real ascii codes for these keys as such, you will need to check out the scan codes for these keys, known as Make and Break key codes as per helppc's information. The reason the codes sounds 'ascii' is because the key codes are handled by the old BIOS interrupt 0x16 and keyboard interrupt 0x9.
Normal Mode Num lock on Make Break Make Break Down arrow E0 50 E0 D0 E0 2A E0 50 E0 D0 E0 AA Left arrow E0 4B E0 CB E0 2A E0 4B E0 CB E0 AA Right arrow E0 4D E0 CD E0 2A E0 4D E0 CD E0 AA Up arrow E0 48 E0 C8 E0 2A E0 48 E0 C8 E0 AA
Hence by looking at the codes following E0 for the Make key code, such as 0x50, 0x4B, 0x4D, 0x48 respectively, that is where the confusion arise from looking at key-codes and treating them as 'ascii'... the answer is don't as the platform varies, the OS varies, under Windows it would have virtual key code corresponding to those keys, not necessarily the same as the BIOS codes, VK_UP, VK_DOWN, VK_LEFT, VK_RIGHT.. this will be found in your C++'s header file windows.h, as I recall in the SDK's include folder.
Do not rely on the key-codes to have the same 'identical ascii' codes shown here as the Operating system will reprogram the entire BIOS code in whatever the OS sees fit, naturally that would be expected because since the BIOS code is 16bit, and the OS (nowadays are 32bit protected mode), of course those codes from the BIOS will no longer be valid.
Hence the original keyboard interrupt 0x9 and BIOS interrupt 0x16 would be wiped from the memory after the BIOS loads it and when the protected mode OS starts loading, it would overwrite that area of memory and replace it with their own 32 bit protected mode handlers to deal with those keyboard scan codes.
Here is a code sample from the old days of DOS programming, using Borland C v3:
#include <bios.h> int getKey(void){ int key, lo, hi; key = bioskey(0); lo = key & 0x00FF; hi = (key & 0xFF00) >> 8; return (lo == 0) ? hi + 256 : lo; }
This routine actually, returned the codes for up, down is 328 and 336 respectively, (I do not have the code for left and right actually, this is in my old cook book!) The actual scancode is found in the lo
variable. Keys other than the A-Z,0-9, had a scan code of 0 via the bioskey
routine.... the reason 256 is added, because variable lo
has code of 0 and the hi
variable would have the scan code and adds 256 on to it in order not to confuse with the 'ascii' codes...
It's programming where the architecture of your system fits the REST style laid out by Roy Fielding in his thesis. Since this is the architectural style that describes the web (more or less), lots of people are interested in it.
Bonus answer: No. Unless you're studying software architecture as an academic or designing web services, there's really no reason to have heard the term.
One possible PHP solution:
// load XML to SimpleXML
$x = simplexml_load_string($xmlstr);
// index it by title once
$index = array();
foreach ($x->CD as &$cd) {
$title = strtolower((string)$cd['title']);
if (!array_key_exists($title, $index)) $index[$title] = array();
$index[$title][] = &$cd;
}
// query the index
$result = $index[strtolower("EMPIRE BURLESQUE")];
double value= 200.3456;
DecimalFormat df = new DecimalFormat("0.00");
System.out.println(df.format(value));
To create a new helper you can follow the instructions from The Pixel Developer, but my advice is not to create a helper just for the logic required by a particular part of a particular application. Instead, use that logic in the controller to set the arrays to their final intended values. Once you got that, you pass them to the view using the Template Parser Class and (hopefully) you can keep the view clean from anything that looks like PHP using simple variables or variable tag pairs instead of echos and foreachs. i.e:
{blog_entries}
<h5>{title}</h5>
<p>{body}</p>
{/blog_entries}
instead of
<?php foreach ($blog_entries as $blog_entry): ?>
<h5><?php echo $blog_entry['title']; ?></h5>
<p><?php echo $blog_entry['body']; ?></p>
<?php endforeach; ?>
Another benefit from this approach is that you don't have to worry about adding the CI instance as you would if you use custom helpers to do all the work.
A little thing I put together
domready.js
(function(exports, d) {
function domReady(fn, context) {
function onReady(event) {
d.removeEventListener("DOMContentLoaded", onReady);
fn.call(context || exports, event);
}
function onReadyIe(event) {
if (d.readyState === "complete") {
d.detachEvent("onreadystatechange", onReadyIe);
fn.call(context || exports, event);
}
}
d.addEventListener && d.addEventListener("DOMContentLoaded", onReady) ||
d.attachEvent && d.attachEvent("onreadystatechange", onReadyIe);
}
exports.domReady = domReady;
})(window, document);
How to use it
<script src="domready.js"></script>
<script>
domReady(function(event) {
alert("dom is ready!");
});
</script>
You can also change the context in which the callback runs by passing a second argument
function init(event) {
alert("check the console");
this.log(event);
}
domReady(init, console);
Storing a list of strings in Django model:
class Bar(models.Model):
foo = models.TextField(blank=True)
def set_list(self, element):
if self.foo:
self.foo = self.foo + "," + element
else:
self.foo = element
def get_list(self):
if self.foo:
return self.foo.split(",")
else:
None
and you can call it like this:
bars = Bar()
bars.set_list("str1")
bars.set_list("str2")
list = bars.get_list()
if list is not None:
for bar in list:
print bar
else:
print "List is empty."
You need to correctly separate static data from instance data. In your code, onLoan
and setLoanItem()
are instance members. If you want to reference/call them you must do so via an instance. So you either want
public void loanItem() {
this.media.setLoanItem("Yes");
}
or
public void loanItem(Media object) {
object.setLoanItem("Yes");
}
depending on how you want to pass that instance around.
Just had same issue. In Python 3, Binary modes 'wb', 'rb' must be specified whereas in Python 2x, they are not needed. When you follow tutorials that are based on Python 2x, that's why you are here.
import pickle
class MyUser(object):
def __init__(self,name):
self.name = name
user = MyUser('Peter')
print("Before serialization: ")
print(user.name)
print("------------")
serialized = pickle.dumps(user)
filename = 'serialized.native'
with open(filename,'wb') as file_object:
file_object.write(serialized)
with open(filename,'rb') as file_object:
raw_data = file_object.read()
deserialized = pickle.loads(raw_data)
print("Loading from serialized file: ")
user2 = deserialized
print(user2.name)
print("------------")
str_replace will do the trick thusly
$new_str = str_replace(' ', '', $old_str);
I had to do same on multiple input, so i updated @Endy Tjahjono method. It returns an array containing all readed files.
.directive("fileread", function () {
return {
scope: {
fileread: "="
},
link: function (scope, element, attributes) {
element.bind("change", function (changeEvent) {
var readers = [] ,
files = changeEvent.target.files ,
datas = [] ;
for ( var i = 0 ; i < files.length ; i++ ) {
readers[ i ] = new FileReader();
readers[ i ].onload = function (loadEvent) {
datas.push( loadEvent.target.result );
if ( datas.length === files.length ){
scope.$apply(function () {
scope.fileread = datas;
});
}
}
readers[ i ].readAsDataURL( files[i] );
}
});
}
}
});
I was dealing with this running Artifactory version 5.8.4. The "Set Me Up" function would generate settings.xml as follows:
<servers>
<server>
<username>${security.getCurrentUsername()}</username>
<password>${security.getEscapedEncryptedPassword()!"AP56eMPz8L12T5u4J6rWdqWqyhQ"}</password>
<id>central</id>
</server>
<server>
<username>${security.getCurrentUsername()}</username>
<password>${security.getEscapedEncryptedPassword()!"AP56eMPz8L12T5u4J6rWdqWqyhQ"}</password>
<id>snapshots</id>
</server>
</servers>
After using the mvn deploy -e -X switch, I noticed the credentials were not accurate. I removed the ${security.getCurrentUsername()} and replaced it with my username and removed ${security.getEscapedEncryptedPassword()!""} and just put my encrypted password which worked for me:
<servers>
<server>
<username>username</username>
<password>AP56eMPz8L12T5u4J6rWdqWqyhQ</password>
<id>central</id>
</server>
<server>
<username>username</username>
<password>AP56eMPz8L12T5u4J6rWdqWqyhQ</password>
<id>snapshots</id>
</server>
</servers>
Hope this helps!
There are lots of answers are already available but i think all of them are missing an important part of this question. Before reading data from an internal database or its table we have to understand how data is stored in it and then we can find the solution of the above question that is :
How can I read SMS messages from the device programmatically in Android?
So,In android SMS table is like look like this
Know,we can select whatever we want from the database.In our case we have only required
id,address and body
In case of reading SMS:
1.Ask for permissions
int REQUEST_PHONE_CALL = 1;
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_SMS) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_SMS}, REQUEST_PHONE_CALL);
}
or
<uses-permission android:name="android.permission.READ_SMS" />
2.Now your code goes like this
// Create Inbox box URI
Uri inboxURI = Uri.parse("content://sms/inbox");
// List required columns
String[] reqCols = new String[]{"_id", "address", "body"};
// Get Content Resolver object, which will deal with Content Provider
ContentResolver cr = getContentResolver();
// Fetch Inbox SMS Message from Built-in Content Provider
Cursor c = cr.query(inboxURI, reqCols, null, null, null);
// Attached Cursor with adapter and display in listview
adapter = new SimpleCursorAdapter(this, R.layout.a1_row, c,
new String[]{"body", "address"}, new int[]{
R.id.A1_txt_Msg, R.id.A1_txt_Number});
lst.setAdapter(adapter);
I hope this one will be helpful. Thanks.
It is probably failing because 1.0.0
is an annotated tag. Perhaps you saw the following error message:
error: Trying to write non-commit object to branch refs/heads/master
Annotated tags have their own distinct type of object that points to the tagged commit object. Branches can not usefully point to tag objects, only commit objects. You need to “peel” the annotated tag back to commit object and push that instead.
git push production +1.0.0^{commit}:master
git push production +1.0.0~0:master # shorthand
There is another syntax that would also work in this case, but it means something slightly different if the tag object points to something other than a commit (or a tag object that points to (a tag object that points to a …) a commit).
git push production +1.0.0^{}:master
These tag peeling syntaxes are described in git-rev-parse(1) under Specifying Revisions.
filenames = '000'.upto('100').map { |index| "file_#{index}" }
Outputs
[file_000, file_001, file_002, file_003, ..., file_098, file_099, file_100]
Can't you style the forms themselves? Then, style the divs accordingly.
form
{
/* styles */
}
You can always overrule inherited styles by making it important:
form
{
/* styles */ !important
}
To set thousand separator, say 123,456.78
you have to use DecimalFormat:
DecimalFormat df = new DecimalFormat("#,###.00");
System.out.println(df.format(new BigDecimal(123456.75)));
System.out.println(df.format(new BigDecimal(123456.00)));
System.out.println(df.format(new BigDecimal(123456123456.78)));
Here is the result:
123,456.75
123,456.00
123,456,123,456.78
Although I set #,###.00
mask, it successfully formats the longer values too.
Note that the comma(,) separator in result depends on your locale. It may be just space( ) for Russian locale.
white-space: normal;
word-wrap: break-word;
"Both" worked for me.
Wrap the sections you want to hide in their own tbody and dynamically show/hide that.
based on https://stackoverflow.com/a/27891752/2642478
class Version(private val value: String) : Comparable<Version> {
private val splitted by lazy { value.split("-").first().split(".").map { it.toIntOrNull() ?: 0 } }
override fun compareTo(other: Version): Int {
for (i in 0 until maxOf(splitted.size, other.splitted.size)) {
val compare = splitted.getOrElse(i) { 0 }.compareTo(other.splitted.getOrElse(i) { 0 })
if (compare != 0)
return compare
}
return 0
}
}
you can use like:
System.err.println(Version("1.0").compareTo( Version("1.0")))
System.err.println(Version("1.0") < Version("1.1"))
System.err.println(Version("1.10") > Version("1.9"))
System.err.println(Version("1.10.1") > Version("1.10"))
System.err.println(Version("0.0.1") < Version("1"))
Your javascript values are client-side, your scriptlet is running server-side. So if you want to use your javascript variables in a scriptlet, you will need to submit them.
To achieve this, either store them in input fields and submit a form, or perform an ajax request. I suggest you look into JQuery for this.
A scrolling comes from a box with class pre-scrollable
<div class="pre-scrollable"></div>
There's more examples: http://getbootstrap.com/css/#code-block
Wish it helps.
You need to add a a gesture recognizer (For tap use UITapGestureRecognizer, for tap and hold use UILongPressGestureRecognizer) to your UIImageView
.
let tap = UITapGestureRecognizer(target: self, action: #selector(YourClass.tappedMe))
imageView.addGestureRecognizer(tap)
imageView.isUserInteractionEnabled = true
And Implement the selector method like:
@objc func tappedMe()
{
println("Tapped on Image")
}
The modern way to do this is with flexbox, adding align-items: flex-end;
on the container.
With this content:
<div class="Container">
<div>one</div>
<div>two</div>
</div>
Use this style:
.Container {
display: flex;
align-items: flex-end;
}
This worked well for me, additionally using BASIC authentication:
curl -v --proxy '' --basic -u Administrator:password -X POST -H "Content-Type: application/json"
--data-binary '{"value":"30","type":"Tip 3","targetModule":"Target 3","configurationGroup":null,"name":"Configuration Deneme 3","description":null,"identity":"Configuration Deneme 3","version":0,"systemId":3,"active":true}'
http://httpbin.org/post
Of course, you should never use BASIC authentication without SSL and a checked certificate.
I ran into this again today, using Cygwin's cURL 7.49.1 for Windows... And when using --data
or --data-binary
with a JSON argument, cURL got confused and would interpret the {}
in the JSON as a URL template. Adding a -g
argument to turn off cURL globbing fixed that.
See also Passing a URL with brackets to curl.
Swift Version of Lithu T.V's answer:
webView.loadHTMLString(htmlString, baseURL: NSBundle.mainBundle().bundleURL)
So I had a lot of problems with all of the solutions mentioned so far...
I have a local package that I want to always reference (rather than npm link) because it won't be used outside of this project (for now) and also won't be uploaded to an npm repository for wide use as of yet.
I also need it to work on Windows AND Unix, so sym-links aren't ideal.
Pointing to the tar.gz result of (npm package) works for the dependent npm package folder, however this causes issues with the npm cache if you want to update the package. It doesn't always pull in the new one from the referenced npm package when you update it, even if you blow away node_modules and re-do your npm-install for your main project.
so.. This is what worked well for me!
Main Project's Package.json File Snippet:
"name": "main-project-name",
"version": "0.0.0",
"scripts": {
"ng": "ng",
...
"preinstall": "cd ../some-npm-package-angular && npm install && npm run build"
},
"private": true,
"dependencies": {
...
"@com/some-npm-package-angular": "file:../some-npm-package-angular/dist",
...
}
This achieves 3 things:
I hope this is clear, and helps someone out.
The tar.gz approach also sort of works..
npm install (file path) also sort of works.
This was all based off of a generated client from an openapi spec that we wanted to keep in a separate location (rather than using copy-pasta for individual files)
====== UPDATE: ======
There are additional errors with a regular development flow with the above solution, as npm's versioning scheme with local files is absolutely terrible. If your dependent package changes frequently, this whole scheme breaks because npm will cache your last version of the project and then blow up when the SHA hash doesn't match anymore with what was saved in your package-lock.json file, among other issues.
As a result, I recommend using the *.tgz approach with a version update for each change. This works by doing three things.
First:
For your dependent package, use the npm library "ng-packagr". This is automatically added to auto-generated client packages created by the angular-typescript code generator for OpenAPI 3.0.
As a result the project that I'm referencing has a "scripts" section within package.json that looks like this:
"scripts": {
"build": "ng-packagr -p ng-package.json",
"package": "npm install && npm run build && cd dist && npm pack"
},
And the project referencing this other project adds a pre-install step to make sure the dependent project is up to date and rebuilt before building itself:
"scripts": {
"preinstall": "npm run clean && cd ../some-npm-package-angular && npm run package"
},
Second
Reference the built tgz npm package from your main project!
"dependencies": {
"@com/some-npm-package-angular": "file:../some-npm-package-angular/dist/some-npm-package-angular-<packageVersion>.tgz",
...
}
Third
Update the dependent package's version EVERY TIME you update the dependent package. You'll also have to update the version in the main project.
If you do not do this, NPM will choke and use a cached version and explode when the SHA hash doesn't match. NPM versions file-based packages based on the filename changing. It won't check the package itself for an updated version in package.json, and the NPM team stated that they will not fix this, but people keep raising the issue: https://github.com/microsoft/WSL/issues/348
for now, just update the:
"version": "1.0.0-build5",
In the dependent package's package.json file, then update your reference to it in the main project to reference the new filename, ex:
"dependencies": {
"@com/some-npm-package-angular": "file:../some-npm-package-angular/dist/some-npm-package-angular-1.0.0-build5.tgz",
...
}
You get used to it. Just update the two package.json files - version then the ref to the new filename.
Hope that helps someone...
[HttpPost]
public ActionResult SaveComments(int id, string comments){
var actions = new Actions(User.Identity.Name);
var status = actions.SaveComments(id, comments);
return Content(status);
}
Here is a swift 4 sample code which execute API calling using SOAP service format.
func callSOAPWSToGetData() {
let strSOAPMessage =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" +
"<soap:Body>" +
"<CelsiusToFahrenheit xmlns=\"http://www.yourapi.com/webservices/\">" +
"<Celsius>50</Celsius>" +
"</CelsiusToFahrenheit>" +
"</soap:Body>" +
"</soap:Envelope>"
guard let url = URL.init(string: "http://www.example.org") else {
return
}
var request = URLRequest.init(url: url)
let length = (strSOAPMessage as NSString).length
request.addValue("application/soap+xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.addValue("http://www.yourapi.com/webservices/CelsiusToFahrenheit", forHTTPHeaderField: "SOAPAction")
request.addValue(String(length), forHTTPHeaderField: "Content-Length")
request.httpMethod = "POST"
request.httpBody = strSOAPMessage.data(using: .utf8)
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)
let task = session.dataTask(with: request) { (data, response, error) in
guard let responseData = data else {
print("Error: did not receive data")
return
}
guard error == nil else {
print("error calling GET on /todos/1")
print(error ?? "")
return
}
print(responseData)
let strData = String.init(data: responseData, encoding: .utf8)
print(strData ?? "")
}
task.resume()
}
The reason you cannot import path is because it is new in Django 2.0 as is mentioned here: https://docs.djangoproject.com/en/2.0/ref/urls/#path.
On that page in the bottom right hand corner you can change the documentation version to the version that you have installed. If you do this you will see that there is no entry for path
on the 1.11
docs.
I have resolved this issue using below steps
Click on run search this %APPDATA%\NuGet\NuGet.config.
Open the setting and add this http_proxy keyin NuGet.config.
Then you will able install the BouncyCastle.Crypto.dll in your application.
Thank you! Responses are welcome if you help this answer.
Use a DecimalFormatter:
double number = 0.9999999999999;
DecimalFormat numberFormat = new DecimalFormat("#.00");
System.out.println(numberFormat.format(number));
Will give you "0.99". You can add or subtract 0 on the right side to get more or less decimals.
Or use '#' on the right to make the additional digits optional, as in with #.## (0.30) would drop the trailing 0 to become (0.3).
With HSQLDB, you have several built-in options.
There are two GUI database managers and a command line interface to the database. The classes for these are:
org.hsqldb.util.DatabaseManager
org.hsqldb.util.DatabaseManagerSwing
org.hsqldb.cmdline.SqlTool
You can start one of the above from your application and access the in-memory databases.
An example with JBoss is given here:
http://docs.jboss.org/jbpm/v3.2/userguide/html/ch07s03.html
You can also start a server with your application, pointing it to an in-memory database.
org.hsqldb.Server
A simple calculation that can be verified with nvidia-smi for memory usage on the GPU.
import tensorflow as tf
c1 = []
n = 10
def matpow(M, n):
if n < 1: #Abstract cases where n < 1
return M
else:
return tf.matmul(M, matpow(M, n-1))
with tf.device('/gpu:0'):
a = tf.Variable(tf.random.uniform(shape=(10000, 10000)), name="a")
b = tf.Variable(tf.random.uniform(shape=(10000, 10000)), name="b")
c1.append(matpow(a, n))
c1.append(matpow(b, n))
To get the output of ls
, use stdout=subprocess.PIPE
.
>>> proc = subprocess.Popen('ls', stdout=subprocess.PIPE)
>>> output = proc.stdout.read()
>>> print output
bar
baz
foo
The command cdrecord --help
outputs to stderr, so you need to pipe that indstead. You should also break up the command into a list of tokens as I've done below, or the alternative is to pass the shell=True
argument but this fires up a fully-blown shell which can be dangerous if you don't control the contents of the command string.
>>> proc = subprocess.Popen(['cdrecord', '--help'], stderr=subprocess.PIPE)
>>> output = proc.stderr.read()
>>> print output
Usage: wodim [options] track1...trackn
Options:
-version print version information and exit
dev=target SCSI target to use as CD/DVD-Recorder
gracetime=# set the grace time before starting to write to #.
...
If you have a command that outputs to both stdout and stderr and you want to merge them, you can do that by piping stderr to stdout and then catching stdout.
subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
As mentioned by Chris Morgan, you should be using proc.communicate()
instead of proc.read()
.
>>> proc = subprocess.Popen(['cdrecord', '--help'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
>>> out, err = proc.communicate()
>>> print 'stdout:', out
stdout:
>>> print 'stderr:', err
stderr:Usage: wodim [options] track1...trackn
Options:
-version print version information and exit
dev=target SCSI target to use as CD/DVD-Recorder
gracetime=# set the grace time before starting to write to #.
...
Have you tried switching over to WebInvokeAttribute and setting the Method to "GET"?
I believe I had a similar problem and switched to explicitly telling which Method (GET/PUT/POST/DELETE) is expected on most, if not all, my methods.
public class SomeController : ApiController
{
[WebInvoke(UriTemplate = "{itemSource}/Items"), Method="GET"]
public SomeValue GetItems(CustomParam parameter) { ... }
[WebInvoke(UriTemplate = "{itemSource}/Items/{parent}", Method = "GET")]
public SomeValue GetChildItems(CustomParam parameter, SomeObject parent) { ... }
}
The WebGet should handle it but I've seen it have some issues with multiple Get much less multiple Get of the same return type.
[Edit: none of this is valid with the sunset of WCF WebAPI and the migration to ASP.Net WebAPI on the MVC stack]
I had the same problem and what I did is to replace the single quotes with the double one, but what was worse is the fact I had the same error when I had a comma for the last attribute of the json object. So I used regex in python to replace it before using the json.loads()
function. (Be careful about the s at the end of "loads")
import re
with open("file.json", 'r') as f:
s = f.read()
correct_format = re.sub(", *\n *}", "}", s)
data_json = json.loads(correct_format)
The used regex return each comma followed by a newline and "}", replacing it just with a "}".
h:button
- clicking on a h:button
issues a bookmarkable GET
request.
h:commandbutton
- Instead of a get request, h:commandbutton
issues a POST request which sends the form data back to the server.
Here is my experience with Jenkins version 1.636: as long as I have only one "Install automatically" JDK configured in Jenkins JDK section, I don't see "JDK" dropdown in Job=>Configure section, but as soon as I added second JDK in Jenkins config, JDK dropdown appeared in Job=>Configure section with 3 options [(System), JDK1, JDK2]
One way is to add this to a new c# class or HtmlExtensions class
public static class HtmlExtensions
{
public static MvcHtmlString Image(this HtmlHelper html, byte[] image)
{
var img = String.Format("data:image/jpg;base64,{0}", Convert.ToBase64String(image));
return new MvcHtmlString("<img src='" + img + "' />");
}
}
then you can do this in any view
@Html.Image(Model.ImgBytes)
Here is a Ray Wenderlich tutorial that shows you how to use AutoLayout to dynamically size UITableViewCell
s. I would think it would be the same for UICollectionViewCell
.
Basically, though, you end up dequeueing and configuring a prototype cell and grabbing its height. After reading this article, I decided to NOT implement this method and just write some clear, explicit sizing code.
Here's what I consider the "secret sauce" for the entire article:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return [self heightForBasicCellAtIndexPath:indexPath];
}
- (CGFloat)heightForBasicCellAtIndexPath:(NSIndexPath *)indexPath {
static RWBasicCell *sizingCell = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sizingCell = [self.tableView dequeueReusableCellWithIdentifier:RWBasicCellIdentifier];
});
[self configureBasicCell:sizingCell atIndexPath:indexPath];
return [self calculateHeightForConfiguredSizingCell:sizingCell];
}
- (CGFloat)calculateHeightForConfiguredSizingCell:(UITableViewCell *)sizingCell {
[sizingCell setNeedsLayout];
[sizingCell layoutIfNeeded];
CGSize size = [sizingCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize];
return size.height + 1.0f; // Add 1.0f for the cell separator height
}
Once you've done that, code like the following will get you going:
// ViewController.m
#import "ViewController.h"
#import "CollectionViewCell.h"
@interface ViewController () <UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout> {
}
@property (weak, nonatomic) IBOutlet CollectionViewCell *cell;
@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor lightGrayColor];
[self.collectionView registerNib:[UINib nibWithNibName:@"CollectionViewCell" bundle:nil] forCellWithReuseIdentifier:@"cell"];
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
NSLog(@"viewDidAppear...");
}
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return 50;
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {
return 10.0f;
}
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
return 10.0f;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return [self sizingForRowAtIndexPath:indexPath];
}
- (CGSize)sizingForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *title = @"This is a long title that will cause some wrapping to occur. This is a long title that will cause some wrapping to occur.";
static NSString *subtitle = @"This is a long subtitle that will cause some wrapping to occur. This is a long subtitle that will cause some wrapping to occur.";
static NSString *buttonTitle = @"This is a really long button title that will cause some wrapping to occur.";
static CollectionViewCell *sizingCell = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sizingCell = [[NSBundle mainBundle] loadNibNamed:@"CollectionViewCell" owner:self options:nil][0];
});
[sizingCell configureWithTitle:title subtitle:[NSString stringWithFormat:@"%@: Number %d.", subtitle, (int)indexPath.row] buttonTitle:buttonTitle];
[sizingCell setNeedsLayout];
[sizingCell layoutIfNeeded];
CGSize cellSize = [sizingCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize];
NSLog(@"cellSize: %@", NSStringFromCGSize(cellSize));
return cellSize;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
static NSString *title = @"This is a long title that will cause some wrapping to occur. This is a long title that will cause some wrapping to occur.";
static NSString *subtitle = @"This is a long subtitle that will cause some wrapping to occur. This is a long subtitle that will cause some wrapping to occur.";
static NSString *buttonTitle = @"This is a really long button title that will cause some wrapping to occur.";
CollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
[cell configureWithTitle:title subtitle:[NSString stringWithFormat:@"%@: Number %d.", subtitle, (int)indexPath.row] buttonTitle:buttonTitle];
return cell;
}
@end
The code above (along with a very basic UICollectionViewCell
subclass and associated XIB) gives me this:
You can also try using multiprocessing.Process
with daemon=True
; the process.start()
method does not block and you can return a response/status immediately to the caller while your expensive function executes in the background.
I experienced similar problem while working with falcon framework and using daemon
process helped.
You'd need to do the following:
from multiprocessing import Process
@app.route('/render/<id>', methods=['POST'])
def render_script(id=None):
...
heavy_process = Process( # Create a daemonic process with heavy "my_func"
target=my_func,
daemon=True
)
heavy_process.start()
return Response(
mimetype='application/json',
status=200
)
# Define some heavy function
def my_func():
time.sleep(10)
print("Process finished")
You should get a response immediately and, after 10s you should see a printed message in the console.
NOTE: Keep in mind that daemonic
processes are not allowed to spawn any child processes.
sed
can be put into multi-line search & replace mode to match newline characters \n
.
To do so sed
first has to read the entire file or string into the hold buffer ("hold space") so that it then can treat the file or string contents as a single line in "pattern space".
To replace a single newline portably (with respect to GNU and FreeBSD sed
) you can use an escaped "real" newline.
# cf. http://austinmatzko.com/2008/04/26/sed-multi-line-search-and-replace/
echo 'California
Massachusetts
Arizona' |
sed -n -e '
# if the first line copy the pattern to the hold buffer
1h
# if not the first line then append the pattern to the hold buffer
1!H
# if the last line then ...
$ {
# copy from the hold to the pattern buffer
g
# double newlines
s/\n/\
\
/g
s/$/\
/
p
}'
# output
# California
#
# Massachusetts
#
# Arizona
#
There is, however, a much more convenient was to achieve the same result:
echo 'California
Massachusetts
Arizona' |
sed G
In internet explorer, if the new url is from the same domain as the current url, the window will be open without an address bar. Otherwise, it will cause an address bar to appear. One workaround is to open a page from the same domain and then redirect from that page.
IF you want to derive usg Boolean true False need to add "[]" around value
<form [formGroup]="form">
<input type="radio" [value]=true formControlName="gender" >Male
<input type="radio" [value]=false formControlName="gender">Female
</form>
It's not basic css, but if you're using LESS (http://lesscss.org), you can do this using recursion:
.hClass (@index) when (@index > 0) {
h@{index} {
font: 32px/42px trajan-pro-1,trajan-pro-2;
}
.hClass(@index - 1);
}
.hClass(6);
Sass (http://sass-lang.com) will allow you to manage this, but won't allow recursion; they have @for
syntax for these instances:
@for $index from 1 through 6 {
h#{$index}{
font: 32px/42px trajan-pro-1,trajan-pro-2;
}
}
If you're not using a dynamic language that compiles to CSS like LESS or Sass, you should definitely check out one of these options. They can really simplify and make more dynamic your CSS development.
Simply use the Get-Content
and Set-Content
cmdlets:
Get-Content inputFile1.txt, inputFile2.txt | Set-Content joinedFile.txt
You can concatenate more than two files with this style, too.
If the source files are named similarly, you can use wildcards:
Get-Content inputFile*.txt | Set-Content joinedFile.txt
Note 1: PowerShell 5 and older versions allowed this to be done more concisely using the aliases cat
and sc
for Get-Content
and Set-Content
respectively. However, these aliases are problematic because cat
is a system command in *nix systems, and sc
is a system command in Windows systems - therefore using them is not recommended, and in fact sc
is no longer even defined as of PowerShell Core (v7). The PowerShell team recommends against using aliases in general.
Note 2: Be careful with wildcards - if you try to output to examples.txt
(or similar that matches the pattern), PowerShell will get into an infinite loop! (I just tested this.)
Note 3: Outputting to a file with >
does not preserve character encoding! This is why using Set-Content
is recommended.
For Internet Explorer, go to Tools. Click on the print option and then page set up. Under headers and Footer, make all the choices "empty". Then it will not print out on your printed pages.
I hope this helps.
Per HTML syntax, and even HTML5, the following are all valid options:
<option value=""asd">test</option>
<option value=""asd">test</option>
<option value='"asd'>test</option>
<option value='"asd'>test</option>
<option value='"asd'>test</option>
<option value="asd>test</option>
<option value="asd>test</option>
Note that if you are using XML syntax the quotes (single or double) are required.
Here are a couple of things to notice in order to understand the connected component's behavior in your code:
The Arity of connect
Matters: connect(mapStateToProps, mapDispatchToProps)
React-Redux calls connect
with the first argument mapStateToProps
, and second argument mapDispatchToProps
.
Therefore, although you've passed in your mapDispatchToProps
, React-Redux in fact treats that as mapState
because it is the first argument. You still get the injected onSubmit
function in your component because the return of mapState
is merged into your component's props. But that is not how mapDispatch
is supposed to be injected.
You may use mapDispatch
without defining mapState
. Pass in null
in place of mapState
and your component will not subject to store changes.
Connected Component Receives dispatch
by Default, When No mapDispatch
Is Provided
Also, your component receives dispatch
because it received null
for its second position for mapDispatch
. If you properly pass in mapDispatch
, your component will not receive dispatch
.
The above answers why the component behaved that way. Although, it is common practice that you simply pass in your action creator using mapStateToProps
's object shorthand. And call that within your component's onSubmit
That is:
import { setAddresses } from '../actions.js'
const Start = (props) => {
// ... omitted
return <div>
{/** omitted */}
<FlatButton
label='Does Not Work'
onClick={this.props.setAddresses({
pickup: this.refs.pickup.state.address,
dropoff: this.refs.dropoff.state.address
})}
/>
</div>
};
const mapStateToProps = { setAddresses };
export default connect(null, mapDispatchToProps)(Start)
I have an idea that I don't have time to try to implement immediately.
But what if you do something like the following:
$ MY_HISTORY_FILE = `get_temp_filename`
$ MY_HISTORY_FILE=$MY_HISTORY_FILE bash -i 2>&1 | tee $MY_HISTORY_FILE
$ some_command
$ cat $MY_HISTORY_FILE
$ # ^You'll want to filter that down in practice!
There might be issues with IO buffering. Also the file might get too huge. One would have to come up with a solution to these problems.
When do I use git rebase
? Almost never, because it rewrites history. git merge
is almost always the preferable choice, because it respects what actually happened in your project.
Here is my approach- download the freemind and CAM XML Template Editor.
Then open CAM XML, create new Template from XML, View -> View Template As Mind Map
Pros of this solution:
Cons:
you can use the weight value specified in the Google Fonts.
body{
font-family: 'Heebo', sans-serif;
font-weight: 100;
}
Javascript doesn't have "associative arrays" the way you're thinking of them. Instead, you simply have the ability to set object properties using array-like syntax (as in your example), plus the ability to iterate over an object's properties.
The upshot of this is that there is no guarantee as to the order in which you iterate over the properties, so there is nothing like a sort for them. Instead, you'll need to convert your object properties into a "true" array (which does guarantee order). Here's a code snippet for converting an object into an array of two-tuples (two-element arrays), sorting it as you describe, then iterating over it:
var tuples = [];
for (var key in obj) tuples.push([key, obj[key]]);
tuples.sort(function(a, b) {
a = a[1];
b = b[1];
return a < b ? -1 : (a > b ? 1 : 0);
});
for (var i = 0; i < tuples.length; i++) {
var key = tuples[i][0];
var value = tuples[i][1];
// do something with key and value
}
You may find it more natural to wrap this in a function which takes a callback:
function bySortedValue(obj, callback, context) {_x000D_
var tuples = [];_x000D_
_x000D_
for (var key in obj) tuples.push([key, obj[key]]);_x000D_
_x000D_
tuples.sort(function(a, b) {_x000D_
return a[1] < b[1] ? 1 : a[1] > b[1] ? -1 : 0_x000D_
});_x000D_
_x000D_
var length = tuples.length;_x000D_
while (length--) callback.call(context, tuples[length][0], tuples[length][1]);_x000D_
}_x000D_
_x000D_
bySortedValue({_x000D_
foo: 1,_x000D_
bar: 7,_x000D_
baz: 3_x000D_
}, function(key, value) {_x000D_
document.getElementById('res').innerHTML += `${key}: ${value}<br>`_x000D_
});
_x000D_
<p id='res'>Result:<br/><br/><p>
_x000D_
if you want to send arguments and receive the result from second fragment, you may use Fragment.setArguments to accomplish this task
static class FirstFragment extends Fragment {
final Handler mUIHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 101: // receive the result from SecondFragment
Object result = msg.obj;
// do something according to the result
break;
}
};
};
void onStartSecondFragments() {
Message msg = Message.obtain(mUIHandler, 101, 102, 103, new Object()); // replace Object with a Parcelable if you want to across Save/Restore
// instance
putParcelable(new SecondFragment(), msg).show(getFragmentManager().beginTransaction(), null);
}
}
static class SecondFragment extends DialogFragment {
Message mMsg; // arguments from the caller/FirstFragment
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onViewCreated(view, savedInstanceState);
mMsg = getParcelable(this);
}
void onClickOK() {
mMsg.obj = new Object(); // send the result to the caller/FirstFragment
mMsg.sendToTarget();
}
}
static <T extends Fragment> T putParcelable(T f, Parcelable arg) {
if (f.getArguments() == null) {
f.setArguments(new Bundle());
}
f.getArguments().putParcelable("extra_args", arg);
return f;
}
static <T extends Parcelable> T getParcelable(Fragment f) {
return f.getArguments().getParcelable("extra_args");
}
In our case, beside changing ToolsVersion from 14.0 to 15.0 on .csproj projet file, as stated by Dominik Litschauer, we also had to install an updated version of MSBuild, since compilation is being triggered by a Jenkins job. After installing Build Tools for Visual Studio 2019, we had got MsBuild version 16.0 and all new C# features compiled ok.
I assume that you have some sort of List
component and some sort of Item
component. The way I did it in one project was to let the item know if it was active or not; the item would ask the list to scroll it into view if necessary. Consider the following pseudocode:
class List extends React.Component {
render() {
return <div>{this.props.items.map(this.renderItem)}</div>;
}
renderItem(item) {
return <Item key={item.id} item={item}
active={item.id === this.props.activeId}
scrollIntoView={this.scrollElementIntoViewIfNeeded} />
}
scrollElementIntoViewIfNeeded(domNode) {
var containerDomNode = React.findDOMNode(this);
// Determine if `domNode` fully fits inside `containerDomNode`.
// If not, set the container's scrollTop appropriately.
}
}
class Item extends React.Component {
render() {
return <div>something...</div>;
}
componentDidMount() {
this.ensureVisible();
}
componentDidUpdate() {
this.ensureVisible();
}
ensureVisible() {
if (this.props.active) {
this.props.scrollIntoView(React.findDOMNode(this));
}
}
}
A better solution is probably to make the list responsible for scrolling the item into view (without the item being aware that it's even in a list). To do so, you could add a ref
attribute to a certain item and find it with that:
class List extends React.Component {
render() {
return <div>{this.props.items.map(this.renderItem)}</div>;
}
renderItem(item) {
var active = item.id === this.props.activeId;
var props = {
key: item.id,
item: item,
active: active
};
if (active) {
props.ref = "activeItem";
}
return <Item {...props} />
}
componentDidUpdate(prevProps) {
// only scroll into view if the active item changed last render
if (this.props.activeId !== prevProps.activeId) {
this.ensureActiveItemVisible();
}
}
ensureActiveItemVisible() {
var itemComponent = this.refs.activeItem;
if (itemComponent) {
var domNode = React.findDOMNode(itemComponent);
this.scrollElementIntoViewIfNeeded(domNode);
}
}
scrollElementIntoViewIfNeeded(domNode) {
var containerDomNode = React.findDOMNode(this);
// Determine if `domNode` fully fits inside `containerDomNode`.
// If not, set the container's scrollTop appropriately.
}
}
If you don't want to do the math to determine if the item is visible inside the list node, you could use the DOM method scrollIntoView()
or the Webkit-specific scrollIntoViewIfNeeded
, which has a polyfill available so you can use it in non-Webkit browsers.
The simplest way to create a manifest is:
Project Properties -> Security -> Click "enable ClickOnce security settings"
(it will generate default manifest in your project Properties) -> then Click
it again in order to uncheck that Checkbox -> open your app.maifest and edit
it as you wish.
To animate your 3D object, use the code:
<script>
$(document).ready(function(){
var x = 100;
var y = 0;
setInterval(function(){
x += 1;
y += 1;
var element = document.getElementById('cube');
element.style.webkitTransform = "translateZ(-100px) rotateY("+x+"deg) rotateX("+y+"deg)"; //for safari and chrome
element.style.MozTransform = "translateZ(-100px) rotateY("+x+"deg) rotateX("+y+"deg)"; //for firefox
},50);
//for other browsers use: "msTransform", "OTransform", "transform"
});
</script>
Assuming your example text is representative of all the text, one line would consume about 75 bytes on my machine:
In [3]: sys.getsizeof('usedfor zipper fasten_coat')
Out[3]: 75
Doing some rough math:
75 bytes * 8,000,000 lines / 1024 / 1024 = ~572 MB
So roughly 572 meg to store the strings alone for one of these files. Once you start adding in additional, similarly structured and sized files, you'll quickly approach your virtual address space limits, as mentioned in @ShadowRanger's answer.
If upgrading your python isn't feasible for you, or if it only kicks the can down the road (you have finite physical memory after all), you really have two options: write your results to temporary files in-between loading in and reading the input files, or write your results to a database. Since you need to further post-process the strings after aggregating them, writing to a database would be the superior approach.
All DECLAREs need to be at the top. ie.
delimiter //
CREATE TRIGGER pgl_new_user
AFTER INSERT ON users FOR EACH ROW
BEGIN
DECLARE m_user_team_id integer;
DECLARE m_projects_id integer;
DECLARE cur CURSOR FOR SELECT project_id FROM user_team_project_relationships WHERE user_team_id = m_user_team_id;
SET @m_user_team_id := (SELECT id FROM user_teams WHERE name = "pgl_reporters");
OPEN cur;
ins_loop: LOOP
FETCH cur INTO m_projects_id;
IF done THEN
LEAVE ins_loop;
END IF;
INSERT INTO users_projects (user_id, project_id, created_at, updated_at, project_access)
VALUES (NEW.id, m_projects_id, now(), now(), 20);
END LOOP;
CLOSE cur;
END//
Add an entry in /etc/profile
that executes the script. This will be run during every log-on. If you are only doing this for your own account, use one of your login scripts (e.g. .bash_profile
) to run it.
There are MYSQL functions you can use. Like this one that resolves the user:
SELECT USER();
This will return something like root@localhost
so you get the host and the user.
To get the current database run this statement:
SELECT DATABASE();
Other useful functions can be found here: http://dev.mysql.com/doc/refman/5.0/en/information-functions.html
just posting in case anyone else has the same error...
I was using 'await' outside of an 'async' function and for whatever reason that results in a 'missing ) after argument list' error.
The solution was to make the function asynchronous
function functionName(args) {}
becomes
async function functionName(args) {}
.center {
margin: auto;
margin-top: 15vh;
}
Should do the trick
The detach/copy/attach method will take down the database. That's not something you'd want in production.
The backup/restore will only work if you have write permissions to the production server. I work with Amazon RDS and I don't.
The import/export method doesn't really work because of foreign keys - unless you do tables one by one in the order they reference one another. You can do an import/export to a new database. That will copy all the tables and data, but not the foreign keys.
This sounds like a common operation one needs to do with database. Why isn't SQL Server handling this properly? Every time I had to do this it was frustrating.
That being said, the only painless solution I've encountered was Sql Azure Migration Tool which is maintained by the community. It works with SQL Server too.
It's even easier to do without a library
window.onload = function() {
// code
};
If you prefer to use a class name, by all means use a class name.
className={completed ? 'text-strike' : null}
You may also find the classnames package helpful. With it, your code would look like this:
className={classNames({ 'text-strike': completed })}
There's no "correct" way to do conditional styling. Do whatever works best for you. For myself, I prefer to avoid inline styling and use classes in the manner just described.
POSTSCRIPT [06-AUG-2019]
Whilst it remains true that React is unopinionated about styling, these days I would recommend a CSS-in-JS solution; namely styled components or emotion. If you're new to React, stick to CSS classes or inline styles to begin with. But once you're comfortable with React I recommend adopting one of these libraries. I use them in every project.
Try Request.Url.Query
if you want the raw querystring as a string.
In case this is useful to anyone I had this same issue. I was bringing in a footer into a web page via jQuery. Inside that footer were some Google scripts for ads and retargeting. I had to move those scripts from the footer and place them directly in the page and that eliminated the notice.
you can swipe the key and the value. For example
String[] k = {"Elena", "Thomas", "Hamilton", "Suzie", "Phil"};
int[] v = {341, 273, 278, 329, 445};
TreeMap<Integer,String>a=new TreeMap();
for (int i = 0; i < k.length; i++)
a.put(v[i],k[i]);
System.out.println(a.firstEntry().getValue()+"\t"+a.firstEntry().getKey());
a.remove(a.firstEntry().getKey());
System.out.println(a.firstEntry().getValue()+"\t"+a.firstEntry().getKey());
As a novice user it took me a while to understand how to fix this in a correct way. After searching and understating many answers on SO I came out with the Following steps that you need to follow to fix the issue.
Please Note:
Although the simplest solution is to update the Info.plist of android studio . But it is not recommended and not the correct way to fix it .
Official statement- "Please note: Do not edit Info.plist to pick a different version. That will break not only the application signature, but also future patch updates to your installation."
First Solution : If you run your Android Studio from command line, you can add these two lines into your .bash_profile
$ export STUDIO_JDK=/Library/Java/JavaVirtualMachines/jdk1.7.0_67.jdk
$ open /Applications/Android\ Studio.app
From next time whenever you open your terminal your studio will start automatically.
Second Solution: If you want to run Android Studio from UI(by click on Icon) follow below steps:
Copy past the below line
do shell script "launchctl setenv STUDIO_JDK /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk"
Note :- Change the jdk version according to your version. To check which version you are using open terminal and run the following command
java -version
3.Now save (?+s) as File format: Application. Finally open System Settings ? Users & Groups ? Login Items and add your new application that you have just created.
woolaaaa…Its done.
References :
Most browsers don't display the custom message passed to confirm()
.
With this method, you can show a popup with a custom message if your user changed the value of any <input>
field.
You can apply this only to some links, or even other HTML elements in your page. Just add a custom class to all the links that need confirmation and apply use the following code:
$(document).ready(function() {_x000D_
let unsaved = false;_x000D_
// detect changes in all input fields and set the 'unsaved' flag_x000D_
$(":input").change(() => unsaved = true);_x000D_
// trigger popup on click_x000D_
$('.dangerous-link').click(function() {_x000D_
if (unsaved && !window.confirm("Are you sure you want to nuke the world?")) {_x000D_
return; // user didn't confirm_x000D_
}_x000D_
// either there are no unsaved changes or the user confirmed_x000D_
window.location.href = $(this).data('destination');_x000D_
});_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
_x000D_
_x000D_
<input type="text" placeholder="Nuclear code here" />_x000D_
<a data-destination="https://en.wikipedia.org/wiki/Boom" class="dangerous-link">_x000D_
Launch nuke!_x000D_
</a>
_x000D_
Try changing the input value in the example to get a preview of how it works.
Update (2008-09-19 10:05) - Solution:
My Solution: Social engineering, I dug real hard and found someone who knew the schema name.
Technical Solution: Searching the .dmp file did yield the schema name.
Once I knew the schema name, I searched the dump file and learned where to find it.
Places the Schemas name were seen, in the .dmp file:
<OWNER_NAME>SOURCE_SCHEMA</OWNER_NAME>
This was seen before each table name/definition.
SCHEMA_LIST 'SOURCE_SCHEMA'
This was seen near the end of the .dmp.
Interestingly enough, around the SCHEMA_LIST 'SOURCE_SCHEMA'
section, it also had the command line used to create the dump, directories used, par files used, windows version it was run on, and export session settings (language, date formats).
So, problem solved :)
In my case, it was caused by a missing (0)
in javascript:void(0)
in an anchor.
In the standard library, there is no cross-platform way to create aware timezones without creating your own timezone class.
On Windows, there's win32timezone.utcnow()
, but that's part of pywin32. I would rather suggest to use the pytz library, which has a constantly updated database of most timezones.
Working with local timezones can be very tricky (see "Further reading" links below), so you may rather want to use UTC throughout your application, especially for arithmetic operations like calculating the difference between two time points.
You can get the current date/time like so:
import pytz
from datetime import datetime
datetime.utcnow().replace(tzinfo=pytz.utc)
Mind that datetime.today()
and datetime.now()
return the local time, not the UTC time, so applying .replace(tzinfo=pytz.utc)
to them would not be correct.
Another nice way to do it is:
datetime.now(pytz.utc)
which is a bit shorter and does the same.
Further reading/watching why to prefer UTC in many cases:
For practically all date and time matters I prefer to simplify things, very, very simple... Down to seconds stored in integers.
Integers will always be supported as integers in databases, flat files, etc. You do a little math and cast it into another type and you can format the date anyway you want.
Doing it this way, you don't have to worry when [insert current favorite database here] is replaced with [future favorite database] which coincidentally didn't use the date format you chose today.
It's just a little math overhead (eg. methods--takes two seconds, I'll post a gist if necessary) and simplifies things for a lot of operations regarding date/time later.
I am now returning to setters and getters but I am also putting the getters and setters in the magic methos __get and __set. This way I have a default behavior when I do this
$class->var;
This will just call the getter I have set in the __get. Normally I will just use the getter directly but there are still some instances where this is just simpler.
Since you have used datepicker as a class I'm assuming you are using a Jquery datepicker or something similar.
There is a way to do what you are intending without using moment.js at all, purely using just datepicker and angularjs directives.
I've given a example here in this Fiddle
Excerpts from the fiddle here:
Datepicker has a different format and angularjs format is different, need to find the appropriate match so that date is preselected in the control and is also populated in the input field while the ng-model is bound. The below format is equivalent to 'mediumDate'
format of AngularJS.
$(element).find(".datepicker")
.datepicker({
dateFormat: 'M d, yy'
});
The date input directive needs to have an interim string variable to represent the human readable form of date.
Refreshing across different sections of page should happen via events, like $broadcast
and $on
.
Using filter to represent date in human readable form is possible in ng-model as well but with a temporary model variable.
$scope.dateValString = $filter('date')($scope.dateVal, 'mediumDate');
I have done this in the past, and have always used this:
With Me.RecordsetClone
.MoveFirst
Do Until .EOF
If Me.Dirty Then
Me.Dirty = False
End If
.MoveNext
Me.Bookmark = .Bookmark
Loop
End With
Some people would use the form's Recordset, which doesn't require setting the bookmark (i.e., navigating the form's Recordset navigates the form's edit buffer automatically, so the user sees the move immediately), but I prefer the indirection of the RecordsetClone.
Select File>New>Folder>Assets Folder
Click finish
Right click on assets and create a folder called fonts
Put your font file in assets > fonts
Use code below to change your textView's font
TextView textView = (TextView) findViewById(R.id.textView);
Typeface typeface = Typeface.createFromAsset(getAssets(), "fonts/yourfont.ttf");
textView.setTypeface(typeface);
I also found Symfony Process Component useful for this.
use Symfony\Component\Process\Process;
$process = new Process('ls -lsa');
// ... run process in background
$process->start();
// ... do other things
// ... if you need to wait
$process->wait();
// ... do things after the process has finished
See how it works in its GitHub repo.
If you have the following HTML snippet:
<link id="favicon" rel="shortcut icon" type="image/png" href="favicon.png" />
You can change the favicon using Javascript by changing the HREF element on this link, for instance (assuming you're using JQuery):
$("#favicon").attr("href","favicon2.png");
You can also create a Canvas element and set the HREF as a ToDataURL() of the canvas, much like the Favicon Defender does.
.navigationLevel2 li { color: #aa0000 }
As answer by Neodan mongoexport is quite useful with -q
option for query. It also convert ObjectId
to standard format of JSON "$oid"
. E.g:
mongoexport -d yourdb -c yourcol --jsonArray --pretty -q '{"field": "filter value"}' -o output.json
If you are using Matplotlib and are trying to get good figures in a LaTeX document, save as an EPS. Specifically, try something like this after running the commands to plot the image:
plt.savefig('destination_path.eps', format='eps')
I have found that EPS files work best and the dpi
parameter is what really makes them look good in a document.
To specify the orientation of the figure before saving, simply call the following before the plt.savefig
call, but after creating the plot (assuming you have plotted using an axes with the name ax
):
ax.view_init(elev=elevation_angle, azim=azimuthal_angle)
Where elevation_angle
is a number (in degrees) specifying the polar angle (down from vertical z axis) and the azimuthal_angle
specifies the azimuthal angle (around the z axis).
I find that it is easiest to determine these values by first plotting the image and then rotating it and watching the current values of the angles appear towards the bottom of the window just below the actual plot. Keep in mind that the x, y, z, positions appear by default, but they are replaced with the two angles when you start to click+drag+rotate the image.
I would like to share more about the usage of the scroll text fragment
syntax: #:~:text=[prefix-,]textStart[,textEnd][,-suffix]
Example | Demo link |
---|---|
#:~:text=to |
How to highlight text using javascript |
#:~:text=to,text |
How to highlight text using javascript |
#:~:text=tex-,t |
How to highlight text using javascript |
#:~:text=text-,using,-javascript |
How to highlight text using javascript |
If you want to highlight multiple text fragments in one URL (&text=
)
Example | Demo link |
---|---|
#:~:text=javascript&text=highlight&text=Ankit |
How to highlight text using javascript |
If you are not using Conda but vanilla Python, 'brew install graphviz' works.
You can stop the video by calling the stopVideo()
method on the YouTube player instance before hiding the div e.g.
player.stopVideo()
For more details see here: http://code.google.com/apis/youtube/js_api_reference.html#Playback_controls
localStorage.username = 'blah'
If you're guaranteed to be on a modern browser. Though know your values will all be turned into strings.
Also has the handy benefit of being cached between reloads.
Resolution is simple. Open the "Android SDK Manager", update all packages and then restart your Android Studio. After that you project should compile without any issues.
with GNU-grep you could just say
grep --context=10 ...
From man curl
:
-x, --proxy <[protocol://][user:password@]proxyhost[:port]>
Use the specified HTTP proxy.
If the port number is not specified, it is assumed at port 1080.
General way:
export http_proxy=http://your.proxy.server:port/
Then you can connect through proxy from (many) application.
And, as per comment below, for https:
export https_proxy=https://your.proxy.server:port/
Need to add package
sudo apt-get install libpq-dev
to install pg gem in RoR
The only thing that worked for me was inspired from here: https://stackoverflow.com/a/35527407/2310544
For pure dd/MM/yyyy, this worked for me, with angular 2 beta 16:
{{ myDate | date:'d'}}/{{ myDate | date:'MM'}}/{{ myDate | date:'y'}}
Your json contains an array, but you're trying to parse it as an object.
This error occurs because objects must start with {
.
You have 2 options:
You can get rid of the ShopContainer
class and use Shop[]
instead
ShopContainer response = restTemplate.getForObject(
url, ShopContainer.class);
replace with
Shop[] response = restTemplate.getForObject(url, Shop[].class);
and then make your desired object from it.
You can change your server to return an object instead of a list
return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(list);
replace with
return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(
new ShopContainer(list));
I found two links of performance compare among several ways of converting string
to int
.
parseInt(str,10)
parseFloat(str)
str << 0
+str
str*1
str-0
Number(str)
window.open('https://support.wwf.org.uk', '_blank');
The second parameter is what makes it open in a new window. Don't forget to read Jakob Nielsen's informative article :)
If you want to set the active tab by ID instead of index, you can also use the following:
$('#tabs').tabs({ active: $('#tabs ul').index($('#tab-101')) });
The problem is that you are using getSystemResourceAsStream
. Use simply getResourceAsStream
. System resources load from the system classloader, which is almost certainly not the class loader that your jar is loaded into when run as a webapp.
It works in Eclipse because when launching an application, the system classloader is configured with your jar as part of its classpath. (E.g. java -jar my.jar will load my.jar in the system class loader.) This is not the case with web applications - application servers use complex class loading to isolate webapplications from each other and from the internals of the application server. For example, see the tomcat classloader how-to, and the diagram of the classloader hierarchy used.
EDIT: Normally, you would call getClass().getResourceAsStream()
to retrieve a resource in the classpath, but as you are fetching the resource in a static initializer, you will need to explicitly name a class that is in the classloader you want to load from. The simplest approach is to use the class containing the static initializer,
e.g.
[public] class MyClass {
static
{
...
props.load(MyClass.class.getResourceAsStream("/someProps.properties"));
}
}
First, it is just a presentation of the float
number you see in the debugger. The real value is approximately exact (as much as it's possible).
Note: Use always CultureInfo information when dealing with floating point numbers versus strings.
float.Parse("41.00027357629127",
System.Globalization.CultureInfo.InvariantCulture);
This is just an example; choose an appropriate culture for your case.
You need to handle it via ajax
submit.
Something like this:
$(function(){
$('#subscribe-email-form').on('submit', function(e){
e.preventDefault();
$.ajax({
url: url, //this is the submit URL
type: 'GET', //or POST
data: $('#subscribe-email-form').serialize(),
success: function(data){
alert('successfully submitted')
}
});
});
});
A better way would be to use a django form, and then render the following snippet:
<form>
<div class="modal-body">
<input type="email" placeholder="email"/>
<p>This service will notify you by email should any issue arise that affects your plivo service.</p>
</div>
<div class="modal-footer">
<input type="submit" value="SUBMIT" class="btn"/>
</div>
</form>
via the context - example : {{form}}
.
In the following, an anchor tag has a child and a grandchild. The grandchild has the far background gradient. The child in the near background is transparent, but has the gradient to transition to. On hover, the child's opacity is transitioned from 0 to 1, over a period of 1 second.
Here is the CSS:
.bkgrndfar {
position:absolute;
top:0;
left:0;
z-index:-2;
height:100%;
width:100%;
background:linear-gradient(#eee, #aaa);
}
.bkgrndnear {
position:absolute;
top:0;
left:0;
height:100%;
width:100%;
background:radial-gradient(at 50% 50%, blue 1%, aqua 100%);
opacity:0;
transition: opacity 1s;
}
a.menulnk {
position:relative;
text-decoration:none;
color:#333;
padding: 0 20px;
text-align:center;
line-height:27px;
float:left;
}
a.menulnk:hover {
color:#eee;
text-decoration:underline;
}
/* This transitions child opacity on parent hover */
a.menulnk:hover .bkgrndnear {
opacity:1;
}
And, this is the HTML:
<a href="#" class="menulnk">Transgradient
<div class="bkgrndfar">
<div class="bkgrndnear">
</div>
</div>
</a>
The above is only tested in the latest version of Chrome. These are the before hover, halfway on-hover and fully transitioned on-hover images:
Swift 2.0: Coloring Navigation Bar & buttons
navigationController?.navigationBar.barTintColor = UIColor.blueColor()
navigationController?.navigationBar.tintColor = UIColor.whiteColor()
navigationController!.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()]
Use this code it will help for getting any type of device's screen resolution
[[UIScreen mainScreen] bounds].size.height
[[UIScreen mainScreen] bounds].size.width
Its only possible to get the WSDL if the webservice is configured to deliver it. Therefor you have to specify a serviceBehavior and enable httpGetEnabled:
<serviceBehaviors>
<behavior name="BindingBehavior">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
</behavior>
</serviceBehaviors>
In case the webservice is only accessible via https you have to enable httpsGetEnabled instead of httpGetEnabled.
According to Wikipedia, (and many programming books) the definition of method/function overloading is the following:
In some programming languages, function overloading or method overloading is the ability to create multiple functions of the same name with different implementations. Calls to an overloaded function will run a specific implementation of that function appropriate to the context of the call, allowing one function call to perform different tasks depending on context.
In typescript we cannot have different implementations of the same function that are called according to the number and type of arguments. This is because when TS is compiled to JS, the functions in JS have the following characteristics:
Therefore, in a strict sense, one could argue that TS function overloading doesn't exists. However, there are things you can do within your TS code that can perfectly mimick function overloading.
Here is an example:
function add(a: number, b: number, c: number): number;
function add(a: number, b: number): any;
function add(a: string, b: string): any;
function add(a: any, b: any, c?: any): any {
if (c) {
return a + c;
}
if (typeof a === 'string') {
return `a is ${a}, b is ${b}`;
} else {
return a + b;
}
}
The TS docs call this method overloading, and what we basically did is supplying multiple method signatures (descriptions of possible parameters and types) to the TS compiler. Now TS can figure out if we called our function correctly during compile time and give us an error if we called the function incorrectly.
Loop through all files ending with: .img
, .bin
, .txt
suffix, and print the file name:
for i in *.img *.bin *.txt;
do
echo "$i"
done
Or in a recursive manner (find also in all subdirectories):
for i in `find . -type f -name "*.img" -o -name "*.bin" -o -name "*.txt"`;
do
echo "$i"
done
The TextWatcher
interface has 3 callbacks methods which are all called in the following order when a change occurred to the text:
beforeTextChanged(CharSequence s, int start, int count, int after)
s
parameter is the text before any change is applied.start
parameter is the position of the beginning of the changed part in the text.count
parameter is the length of the changed part in the s
sequence since the start
position.after
parameter is the length of the new sequence which will replace the part of the s
sequence from start
to start+count
.TextView
from this method (by using myTextView.setText(String newText)
).onTextChanged(CharSequence s, int start, int before, int count)`
beforeTextChanged
method but called after the text changes.s
parameter is the text after changes have been applied.start
parameter is the same as in the beforeTextChanged
method.count
parameter is the after
parameter in the beforeTextChanged method.before
parameter is the count
parameter in the beforeTextChanged method.TextView
from this method (by using myTextView.setText(String newText)
).afterTextChanged(Editable s)
TextView
from this method.TextView
, the TextWatcher
will be triggered again, starting an infinite loop. You should then add like a boolean _ignore
property which prevent the infinite loop.new TextWatcher() {
boolean _ignore = false; // indicates if the change was made by the TextWatcher itself.
@Override
public void afterTextChanged(Editable s) {
if (_ignore)
return;
_ignore = true; // prevent infinite loop
// Change your text here.
// myTextView.setText(myNewText);
_ignore = false; // release, so the TextWatcher start to listen again.
}
// Other methods...
}
TextViewListener
Personally, I made my custom text listener, which gives me the 4 parts in separate strings, which is, for me, much more intuitive to use.
/**
* Text view listener which splits the update text event in four parts:
* <ul>
* <li>The text placed <b>before</b> the updated part.</li>
* <li>The <b>old</b> text in the updated part.</li>
* <li>The <b>new</b> text in the updated part.</li>
* <li>The text placed <b>after</b> the updated part.</li>
* </ul>
* Created by Jeremy B.
*/
public abstract class TextViewListener implements TextWatcher {
/**
* Unchanged sequence which is placed before the updated sequence.
*/
private String _before;
/**
* Updated sequence before the update.
*/
private String _old;
/**
* Updated sequence after the update.
*/
private String _new;
/**
* Unchanged sequence which is placed after the updated sequence.
*/
private String _after;
/**
* Indicates when changes are made from within the listener, should be omitted.
*/
private boolean _ignore = false;
@Override
public void beforeTextChanged(CharSequence sequence, int start, int count, int after) {
_before = sequence.subSequence(0,start).toString();
_old = sequence.subSequence(start, start+count).toString();
_after = sequence.subSequence(start+count, sequence.length()).toString();
}
@Override
public void onTextChanged(CharSequence sequence, int start, int before, int count) {
_new = sequence.subSequence(start, start+count).toString();
}
@Override
public void afterTextChanged(Editable sequence) {
if (_ignore)
return;
onTextChanged(_before, _old, _new, _after);
}
/**
* Triggered method when the text in the text view has changed.
* <br/>
* You can apply changes to the text view from this method
* with the condition to call {@link #startUpdates()} before any update,
* and to call {@link #endUpdates()} after them.
*
* @param before Unchanged part of the text placed before the updated part.
* @param old Old updated part of the text.
* @param aNew New updated part of the text?
* @param after Unchanged part of the text placed after the updated part.
*/
protected abstract void onTextChanged(String before, String old, String aNew, String after);
/**
* Call this method when you start to update the text view, so it stops listening to it and then prevent an infinite loop.
* @see #endUpdates()
*/
protected void startUpdates(){
_ignore = true;
}
/**
* Call this method when you finished to update the text view in order to restart to listen to it.
* @see #startUpdates()
*/
protected void endUpdates(){
_ignore = false;
}
}
Example:
myEditText.addTextChangedListener(new TextViewListener() {
@Override
protected void onTextChanged(String before, String old, String aNew, String after) {
// intuitive use of parameters
String completeOldText = before + old + after;
String completeNewText = before + aNew + after;
// update TextView
startUpdates(); // to prevent infinite loop.
myEditText.setText(myNewText);
endUpdates();
}
}
For some reason, it seems that using "text" attribute is the way to go with most browsers. It worked for me
$("#span_id").text("text value to assign");
The above example will work if you are using rear camera. If you are using front camera, you will have to adjust some things:
First off, you will need to add new permission in the manifest.
<uses-feature android:name="android.hardware.camera.front" android:required="false" />
In your initRecorder
method, instead of
CamcorderProfile cpHigh = CamcorderProfile
.get(CamcorderProfile.QUALITY_HIGH);
recorder.setProfile(cpHigh);
You need to use:
CamcorderProfile profile = CamcorderProfile.get(Camera.CameraInfo.CAMERA_FACING_FRONT, CamcorderProfile.QUALITY_LOW);
recorder.setProfile(profile);
because CamcorderProfile.QUALITY_HIGH
is reserved for the rear camera.
You will also have to set the video size for mediarecorder as it is in your surface view.
Here is the full example of recording video from front camera with a small preview display:
Android.manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" android:required="false" />
<uses-feature android:name="android.hardware.camera.front" android:required="false" />
activity_camera.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="CameraActivity">
<SurfaceView
android:layout_width="200dp"
android:layout_height="wrap_content"
android:id="@+id/surfaceView"/>
<Button
android:layout_width="100dp"
android:layout_height="100dp"
android:text="REC"
android:id="@+id/btnRecord"
android:layout_alignParentBottom="true"
android:layout_marginBottom="25dp" />
</RelativeLayout>
CameraActivity.java
public class SongVideoActivity extends BaseActivity implements SurfaceHolder.Callback {
private int mCameraContainerWidth = 0;
private SurfaceView mSurfaceView = null;
private SurfaceHolder mSurfaceHolder = null;
private Camera mCamera = null;
private boolean mIsRecording = false;
private int mPreviewHeight;
private int mPreviewWidth;
MediaRecorder mRecorder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_song_video);
Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread thread, Throwable ex) {
releaseMediaRecorder();
releaseCamera();
}
});
mCamera = getCamera();
//camera preview
mSurfaceView = (SurfaceView) findViewById(R.id.surfaceView);
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
// deprecated setting, but required on Android versions prior to 3.0
mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mCameraContainerWidth = mSurfaceView.getLayoutParams().width;
findViewById(R.id.btnRecord).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mIsRecording) {
stopRecording();
} else {
// initialize video camera
if (prepareVideoRecorder()) {
// Camera is available and unlocked, MediaRecorder is prepared,
// now you can start recording
mRecorder.start();
// inform the user that recording has started
Toast.makeText(getApplicationContext(), "Started recording", Toast.LENGTH_SHORT).show();
mIsRecording = true;
} else {
// prepare didn't work, release the camera
releaseMediaRecorder();
// inform user
}
}
}
});
}
private void stopRecording() {
mRecorder.stop(); // stop the recording
releaseMediaRecorder(); // release the MediaRecorder object
mCamera.lock(); // take camera access back from MediaRecorder
// inform the user that recording has stopped
Toast.makeText(this, "Recording complete", Toast.LENGTH_SHORT).show();
mIsRecording = false;
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaRecorder(); // if you are using MediaRecorder, release it first
releaseCamera(); // release the camera immediately on pause event
}
private Camera getCamera() {
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
for (int camIdx = 0; camIdx < Camera.getNumberOfCameras(); camIdx++) {
Camera.getCameraInfo(camIdx, cameraInfo);
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
try {
return mCamera = Camera.open(camIdx);
} catch (RuntimeException e) {
Log.e("cameras", "Camera failed to open: " + e.getLocalizedMessage());
}
}
}
return null;
}
@Override
protected void onPause() {
super.onPause();
releaseMediaRecorder(); // if you are using MediaRecorder, release it first
releaseCamera(); // release the camera immediately on pause event
}
private Camera.Size getBestPreviewSize(Camera.Parameters parameters) {
Camera.Size result=null;
for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
if(size.width < size.height) continue; //we are only interested in landscape variants
if (result == null) {
result = size;
}
else {
int resultArea = result.width*result.height;
int newArea = size.width*size.height;
if (newArea > resultArea) {
result = size;
}
}
}
return(result);
}
private boolean prepareVideoRecorder(){
mRecorder = new MediaRecorder();
// Step 1: Unlock and set camera to MediaRecorder
mCamera.unlock();
mRecorder.setCamera(mCamera);
// Step 2: Set sources
mRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
//recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
// Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
// Customise your profile based on a pre-existing profile
CamcorderProfile profile = CamcorderProfile.get(Camera.CameraInfo.CAMERA_FACING_FRONT, CamcorderProfile.QUALITY_LOW);
mRecorder.setProfile(profile);
// Step 4: Set output file
mRecorder.setOutputFile(new File(getFilesDir(), "movie-" + UUID.randomUUID().toString()).getAbsolutePath());
//recorder.setMaxDuration(50000); // 50 seconds
//recorder.setMaxFileSize(500000000); // Approximately 500 megabytes
mRecorder.setVideoSize(mPreviewWidth, mPreviewHeight);
// Step 5: Set the preview output
mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
// Step 6: Prepare configured MediaRecorder
try {
mRecorder.prepare();
} catch (IllegalStateException e) {
Toast.makeText(getApplicationContext(), "exception: " + e.getMessage(), Toast.LENGTH_LONG).show();
releaseMediaRecorder();
return false;
} catch (IOException e) {
Toast.makeText(getApplicationContext(), "exception: " + e.getMessage(), Toast.LENGTH_LONG).show();
releaseMediaRecorder();
return false;
}
return true;
}
private void releaseMediaRecorder(){
if (mRecorder != null) {
mRecorder.reset(); // clear recorder configuration
mRecorder.release(); // release the recorder object
mRecorder = null;
mCamera.lock(); // lock camera for later use
}
}
private void releaseCamera(){
if (mCamera != null){
mCamera.release(); // release the camera for other applications
mCamera = null;
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw the preview.
Camera.Parameters parameters = mCamera.getParameters();
parameters.setRecordingHint(true);
Camera.Size size = getBestPreviewSize(parameters);
mCamera.setParameters(parameters);
//resize the view to the specified surface view width in layout
int newHeight = size.height / (size.width / mCameraContainerWidth);
mSurfaceView.getLayoutParams().height = newHeight;
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
mPreviewHeight = mCamera.getParameters().getPreviewSize().height;
mPreviewWidth = mCamera.getParameters().getPreviewSize().width;
mCamera.stopPreview();
try {
mCamera.setPreviewDisplay(mSurfaceHolder);
} catch (IOException e) {
e.printStackTrace();
}
mCamera.startPreview();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mIsRecording) {
stopRecording();
}
releaseMediaRecorder();
releaseCamera();
}
}
This one works for me.
Here's my PHP:
<div id="pageContent">
<?php
while($row = mysqli_fetch_assoc($stmt)) {
?>
<br/>
<input id="vendorName_" name="vendorName_<?php echo $row["id"]; ?>" value='<?php echo $row["vendorName"]; ?>'>
<input id="owner_" name="owner_<?php echo $row["id"]; ?>" value='<?php echo $row["owner"]; ?>'>
<input id="city_" name="city_<?php echo $row["id"]; ?>" value='<?php echo $row["city"]; ?>'>
<button id="btn_update_<?php echo $row["id"]; ?>">Update</button>
<button id="btn_delete_<?php echo $row["id"]; ?>">Delete</button>
<?php
}
?>
</br></br>
<input id = "vendorName_new" value="">
<input id = "owner_new" value="">
<input id = "city_new" value="">
<button id = "addNewVendor" type="submit">+ New Vendor</button>
</div>
Here's my jQuery using AJAX:
$("#addNewVendor").click(function() {
alert();
$.ajax({
type: "POST",
url: "create.php",
data: {vendorName: $("#vendorName_new").val(), owner: $("#owner_new").val(), city: $("#city_new").val()},
success: function(){
$(this).hide();
$('div.success').fadeIn();
showUsers()
}
});
});
1 : if you are interested only in the static block of the class , the loading the class only would do , and would execute static blocks then all you need is:
Class.forName("Somthing");
2 : if you are interested in loading the class , execute its static blocks and also want to access its its non static part , then you need an instance and then you need:
Class.forName("Somthing").newInstance();
The easy option is to use group by and select min/max for all other fields
SELECT TOP 10
p.id,
max(pl.nm),
max(pl.val),
max(pl.txt_val)
from
dm.labs pl
join
mas_data.patients p
on
pl.id = p.id
where
pl.nm like '%LDL%'
and
val is not null
group by
p.id
This can get quite tedious for wide table so the other option is to use rank over and partiion
SELECT TOP 10
p.id,
pl.nm,
pl.val,
pl.txt_val,
rank() over(partition by p.id order by p.id) as Rank
from
dm.labs pl
join
mas_data.patients p
on
pl.id = p.id
where
pl.nm like '%LDL%'
and
val is not null
and
Rank = 1
Following is simple example that may help you:
json_string = """
{
"pk": 1,
"fa": "cc.ee",
"fb": {
"fc": "",
"fd_id": "12345"
}
}"""
import json
data = json.loads(json_string)
if data["fa"] == "cc.ee":
data["fb"]["new_key"] = "cc.ee was present!"
print json.dumps(data)
The output for the above code will be:
{"pk": 1, "fb": {"new_key": "cc.ee was present!", "fd_id": "12345",
"fc": ""}, "fa": "cc.ee"}
Note that you can set the ident argument of dump to print it like so (for example,when using print json.dumps(data , indent=4)):
{
"pk": 1,
"fb": {
"new_key": "cc.ee was present!",
"fd_id": "12345",
"fc": ""
},
"fa": "cc.ee"
}
By default the Ant will considered the JRE as the workspace JRE version. You need to change according to your required version by following the below.
In Eclipse:
Right click on your build.xml click "Run As", click on "External Tool Configurations..." Select tab JRE.
Select the JRE you are using.
Re-run the task, it should be fine now.
You can try importing them and then handle the ImportError if the module doesn't exist.
try:
import numpy
except ImportError:
print "numpy is not installed"
For most controls, you set its height and width to Auto
in the XAML, and it will size to fit its content.
In code, you set the width/height to double.NaN
. For details, see FrameworkElement.Width, particularly the "remarks" section.
I know this is an old question but this may help someone looking for a different method. This is what I use on windows to kill processes that I've called.
si = subprocess.STARTUPINFO()
si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
subprocess.call(["taskkill", "/IM", "robocopy.exe", "/T", "/F"], startupinfo=si)
/IM is the image name, you can also do /PID if you want. /T kills the process as well as the child processes. /F force terminates it. si, as I have it set, is how you do this without showing a CMD window. This code is used in python 3.
function printCrossword(printContainer) {
var DocumentContainer = getElement(printContainer);
var WindowObject = window.open('', "PrintWindow", "width=5,height=5,top=200,left=200,toolbars=no,scrollbars=no,status=no,resizable=no");
WindowObject.document.writeln(DocumentContainer.innerHTML);
WindowObject.document.close();
WindowObject.focus();
WindowObject.print();
WindowObject.close();
}
You can simply add data attribute in html input tag:
In rails html :
<%= form.text_field :appointment_date, 'data-provide': 'datepicker', 'data-date-start-date': "+0d" %>
HTML :
<input data-provide="datepicker" data-date-start-date="+0d" type="text" name="appointment_date" id="appointment_date">
if you read a bit further - "Of course, on the backend, there are threads and processes for DB access and process execution. However, these are not explicitly exposed to your code, so you can’t worry about them other than by knowing that I/O interactions e.g. with the database, or with other processes will be asynchronous from the perspective of each request since the results from those threads are returned via the event loop to your code."
about - "everything runs in parallel except your code" - your code is executed synchronously, whenever you invoke an asynchronous operation such as waiting for IO, the event loop handles everything and invokes the callback. it just not something you have to think about.
in your example: there are two requests A (comes first) and B. you execute request A, your code continue to run synchronously and execute request B. the event loop handles request A, when it finishes it invokes the callback of request A with the result, same goes to request B.
If you need to both get the raw content from the request, but also need to use a bound model version of it in the controller, you will likely get this exception.
NotSupportedException: Specified method is not supported.
For example, your controller might look like this, leaving you wondering why the solution above doesn't work for you:
public async Task<IActionResult> Index(WebhookRequest request)
{
using var reader = new StreamReader(HttpContext.Request.Body);
// this won't fix your string empty problems
// because exception will be thrown
reader.BaseStream.Seek(0, SeekOrigin.Begin);
var body = await reader.ReadToEndAsync();
// Do stuff
}
You'll need to take your model binding out of the method parameters, and manually bind yourself:
public async Task<IActionResult> Index()
{
using var reader = new StreamReader(HttpContext.Request.Body);
// You shouldn't need this line anymore.
// reader.BaseStream.Seek(0, SeekOrigin.Begin);
// You now have the body string raw
var body = await reader.ReadToEndAsync();
// As well as a bound model
var request = JsonConvert.DeserializeObject<WebhookRequest>(body);
}
It's easy to forget this, and I've solved this issue before in the past, but just now had to relearn the solution. Hopefully my answer here will be a good reminder for myself...
This is how I got the H2 console working in spring-boot with H2. I am not sure if this is right but since no one else has offered a solution then I am going to suggest this is the best way to do it.
In my case, I chose a specific name for the database so that I would have something to enter when starting the H2 console (in this case, "AZ"). I think all of these are required though it seems like leaving out the spring.jpa.database-platform does not hurt anything.
In application.properties:
spring.datasource.url=jdbc:h2:mem:AZ;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
In Application.java (or some configuration):
@Bean
public ServletRegistrationBean h2servletRegistration() {
ServletRegistrationBean registration = new ServletRegistrationBean(new WebServlet());
registration.addUrlMappings("/console/*");
return registration;
}
Then you can access the H2 console at {server}/console/. Enter this as the JDBC URL: jdbc:h2:mem:AZ
I saw a nested function technique for computing a weighted average on S.O. one time, altering that technique can solve your issue.
def group_weight(overall_size):
def inner(group):
return len(group)/float(overall_size)
inner.__name__ = 'weight'
return inner
d = {"my_label": pd.Series(['A','B','A','C','D','D','E'])}
df = pd.DataFrame(d)
print df.groupby('my_label').apply(group_weight(len(df)))
my_label
A 0.285714
B 0.142857
C 0.142857
D 0.285714
E 0.142857
dtype: float64
Here is how to do a weighted average within groups
def wavg(val_col_name,wt_col_name):
def inner(group):
return (group[val_col_name] * group[wt_col_name]).sum() / group[wt_col_name].sum()
inner.__name__ = 'wgt_avg'
return inner
d = {"P": pd.Series(['A','B','A','C','D','D','E'])
,"Q": pd.Series([1,2,3,4,5,6,7])
,"R": pd.Series([0.1,0.2,0.3,0.4,0.5,0.6,0.7])
}
df = pd.DataFrame(d)
print df.groupby('P').apply(wavg('Q','R'))
P
A 2.500000
B 2.000000
C 4.000000
D 5.545455
E 7.000000
dtype: float64
To request a new password for the postgres user (without showing it in the command):
sudo -u postgres psql -c "\password"
Made Simple with XML only
res/anim/layout_animation.xml
<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
android:animation="@anim/item_animation_fall_down"
android:animationOrder="normal"
android:delay="15%" />
res/anim/item_animation_fall_down.xml
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="500">
<translate
android:fromYDelta="-20%"
android:toYDelta="0"
android:interpolator="@android:anim/decelerate_interpolator"
/>
<alpha
android:fromAlpha="0"
android:toAlpha="1"
android:interpolator="@android:anim/decelerate_interpolator"
/>
<scale
android:fromXScale="105%"
android:fromYScale="105%"
android:toXScale="100%"
android:toYScale="100%"
android:pivotX="50%"
android:pivotY="50%"
android:interpolator="@android:anim/decelerate_interpolator"
/>
</set>
Use in layouts and recylcerview like:
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layoutAnimation="@anim/layout_animation"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
In order to assign a variable safely you have to use the SET-SELECT statement:
SET @PrimaryContactKey = (SELECT c.PrimaryCntctKey
FROM tarcustomer c, tarinvoice i
WHERE i.custkey = c.custkey
AND i.invckey = @tmp_key)
Make sure you have both a starting and an ending parenthesis!
The reason the SET-SELECT version is the safest way to set a variable is twofold.
1. The SELECT returns several posts
What happens if the following select results in several posts?
SELECT @PrimaryContactKey = c.PrimaryCntctKey
FROM tarcustomer c, tarinvoice i
WHERE i.custkey = c.custkey
AND i.invckey = @tmp_key
@PrimaryContactKey
will be assigned the value from the last post in the result.
In fact @PrimaryContactKey
will be assigned one value per post in the result, so it will consequently contain the value of the last post the SELECT-command was processing.
Which post is "last" is determined by any clustered indexes or, if no clustered index is used or the primary key is clustered, the "last" post will be the most recently added post. This behavior could, in a worst case scenario, be altered every time the indexing of the table is changed.
With a SET-SELECT statement your variable will be set to null
.
2. The SELECT returns no posts
What happens, when using the second version of the code, if your select does not return a result at all?
In a contrary to what you may believe the value of the variable will not be null - it will retain it's previous value!
This is because, as stated above, SQL will assign a value to the variable once per post - meaning it won't do anything with the variable if the result contains no posts. So, the variable will still have the value it had before you ran the statement.
With the SET-SELECT statement the value will be null
.
You could try to assign properties to the ENUM you're trying to create and statically contruct it by using a loaded properties file. Big hack, but it works :)
Here is a version that works in all modern browsers. The key is using appearance:none
which removes the default formatting. Since all of the formatting is gone, you have to add back in the arrow that visually differentiates the select from the input.
Working example: https://jsfiddle.net/gs2q1c7p/
select:not([multiple]) {_x000D_
-webkit-appearance: none;_x000D_
-moz-appearance: none;_x000D_
background-position: right 50%;_x000D_
background-repeat: no-repeat;_x000D_
background-image: url(data:image/png;base64,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);_x000D_
padding: .5em;_x000D_
padding-right: 1.5em_x000D_
}_x000D_
_x000D_
#mySelect {_x000D_
border-radius: 0_x000D_
}
_x000D_
<select id="mySelect">_x000D_
<option>Option 1</option>_x000D_
<option>Option 2</option>_x000D_
</select>
_x000D_
I've found my optimal blocksize to be 8 MB (equal to disk cache?) I needed to wipe (some say: wash) the empty space on a disk before creating a compressed image of it. I used:
cd /media/DiskToWash/
dd if=/dev/zero of=zero bs=8M; rm zero
I experimented with values from 4K to 100M.
After letting dd to run for a while I killed it (Ctlr+C) and read the output:
36+0 records in
36+0 records out
301989888 bytes (302 MB) copied, 15.8341 s, 19.1 MB/s
As dd displays the input/output rate (19.1MB/s in this case) it's easy to see if the value you've picked is performing better than the previous one or worse.
My scores:
bs= I/O rate
---------------
4K 13.5 MB/s
64K 18.3 MB/s
8M 19.1 MB/s <--- winner!
10M 19.0 MB/s
20M 18.6 MB/s
100M 18.6 MB/s
Note: To check what your disk cache/buffer size is, you can use sudo hdparm -i /dev/sda
I am posting this answer because in this way you will never need any plugin like jQuery and any other, This has the solution by simple javascript.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script language="javascript" type="text/javascript">
function dynamicdropdown(listindex)
{
switch (listindex)
{
case "manual" :
document.getElementById("status").options[0]=new Option("Select status","");
document.getElementById("status").options[1]=new Option("OPEN","open");
document.getElementById("status").options[2]=new Option("DELIVERED","delivered");
break;
case "online" :
document.getElementById("status").options[0]=new Option("Select status","");
document.getElementById("status").options[1]=new Option("OPEN","open");
document.getElementById("status").options[2]=new Option("DELIVERED","delivered");
document.getElementById("status").options[3]=new Option("SHIPPED","shipped");
break;
}
return true;
}
</script>
</head>
<title>Dynamic Drop Down List</title>
<body>
<div class="category_div" id="category_div">Source:
<select id="source" name="source" onchange="javascript: dynamicdropdown(this.options[this.selectedIndex].value);">
<option value="">Select source</option>
<option value="manual">MANUAL</option>
<option value="online">ONLINE</option>
</select>
</div>
<div class="sub_category_div" id="sub_category_div">Status:
<script type="text/javascript" language="JavaScript">
document.write('<select name="status" id="status"><option value="">Select status</option></select>')
</script>
<noscript>
<select id="status" name="status">
<option value="open">OPEN</option>
<option value="delivered">DELIVERED</option>
</select>
</noscript>
</div>
</body>
</html>
For more details, I mean to make dynamic and more dependency please take a look at my article create dynamic drop-down list
This is how I handle it.
window.open(doc.output('bloburl'), '_blank');
Another solution I ran across tonight, which worked for my needs, was to add box-sizing
attributes:
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
These attributes force the border to be part of the box model's width and height and correct the issue as well.
According to caniuse.com » box-sizing, box-sizing
is supported in IE8+.
If you're using LESS or Sass there is a Bootstrap mixin for this.
LESS:
.box-sizing(border-box);
Sass:
@include box-sizing(border-box);
Reading this original article on The Code Project will help you a lot: Visual Representation of SQL Joins.
Also check this post: SQL SERVER – Better Performance – LEFT JOIN or NOT IN?.
Find original one at: Difference between JOIN and OUTER JOIN in MySQL.
You can use string.Split
and string.Join
:
string theString = "Some Very Large String Here";
var array = theString.Split(' ');
string firstElem = array.First();
string restOfArray = string.Join(" ", array.Skip(1));
If you know you always only want to split off the first element, you can use:
var array = theString.Split(' ', 2);
This makes it so you don't have to join:
string restOfArray = array[1];
Remember the IDIOM -
READ - MODIFY- WRITE this you can't achieve with volatile
The best method would be to take the code the sqlite3 db dump would do, excluding schema parts.
Example pseudo code:
SELECT 'INSERT INTO ' || tableName || ' VALUES( ' ||
{for each value} ' quote(' || value || ')' (+ commas until final)
|| ')' FROM 'tableName' ORDER BY rowid DESC
See: src/shell.c:838
(for sqlite-3.5.9) for actual code
You might even just take that shell and comment out the schema parts and use that.
no, you need to do something like:
$('input.sitebg').val('000000');
but you should really be using unique IDs if you can.
You can also get more specific, such as:
$('input[type=text].sitebg').val('000000');
EDIT:
do this to find your input based on the name attribute:
$('input[name=sitebg]').val('000000');
@cnu,
You can stop interval, when try run code before look ur console browser (F12) ... try comment clearInterval(trigger) is look again a console, not beautifier? :P
Check example a source:
var trigger = setInterval(function() { _x000D_
if (document.getElementById('sandroalvares') != null) {_x000D_
document.write('<div id="sandroalvares" style="background: yellow; width:200px;">SandroAlvares</div>');_x000D_
clearInterval(trigger);_x000D_
console.log('Success');_x000D_
} else {_x000D_
console.log('Trigger!!');_x000D_
}_x000D_
}, 1000);
_x000D_
<div id="sandroalvares" style="background: gold; width:200px;">Author</div>
_x000D_
To mock a static method that return void for e.g. Fileutils.forceMKdir(File file),
Sample code:
File file =PowerMockito.mock(File.class);
PowerMockito.doNothing().when(FileUtils.class,"forceMkdir",file);
For Chrome on Android, you can use the -webkit-tap-highlight-color CSS property:
-webkit-tap-highlight-color is a non-standard CSS property that sets the color of the highlight that appears over a link while it's being tapped. The highlighting indicates to the user that their tap is being successfully recognized, and indicates which element they're tapping on.
To remove the highlighting completely, you can set the value to transparent
:
-webkit-tap-highlight-color: transparent;
Be aware that this might have consequences on accessibility: see outlinenone.com
textBox1.Focus()
textBox1.SelectionStart = textBox1.Text.Length;
textBox1.ScrollToCaret();
didn't work for me (Windows 8.1, whatever the reason).
And since I'm still on .NET 2.0, I can't use ScrollToEnd.
But this works:
public class Utils
{
[System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto)]
private static extern int SendMessage(System.IntPtr hWnd, int wMsg, System.IntPtr wParam, System.IntPtr lParam);
private const int WM_VSCROLL = 0x115;
private const int SB_BOTTOM = 7;
/// <summary>
/// Scrolls the vertical scroll bar of a multi-line text box to the bottom.
/// </summary>
/// <param name="tb">The text box to scroll</param>
public static void ScrollToBottom(System.Windows.Forms.TextBox tb)
{
if(System.Environment.OSVersion.Platform != System.PlatformID.Unix)
SendMessage(tb.Handle, WM_VSCROLL, new System.IntPtr(SB_BOTTOM), System.IntPtr.Zero);
}
}
VB.NET:
Public Class Utils
<System.Runtime.InteropServices.DllImport("user32.dll", CharSet := System.Runtime.InteropServices.CharSet.Auto)> _
Private Shared Function SendMessage(hWnd As System.IntPtr, wMsg As Integer, wParam As System.IntPtr, lParam As System.IntPtr) As Integer
End Function
Private Const WM_VSCROLL As Integer = &H115
Private Const SB_BOTTOM As Integer = 7
''' <summary>
''' Scrolls the vertical scroll bar of a multi-line text box to the bottom.
''' </summary>
''' <param name="tb">The text box to scroll</param>
Public Shared Sub ScrollToBottom(tb As System.Windows.Forms.TextBox)
If System.Environment.OSVersion.Platform <> System.PlatformID.Unix Then
SendMessage(tb.Handle, WM_VSCROLL, New System.IntPtr(SB_BOTTOM), System.IntPtr.Zero)
End If
End Sub
End Class
For the less specific case (not just the code in the question - since this is one of the first results in Google for this generic error message. This error also occurs when running certain os command with None argument.
For example:
os.path.exists(arg)
os.stat(arg)
Will raise this exception when arg is None.
Here is the solution which worked for me after MySQL 8.0 Installation on Windows 10.
Suppose MySQL username is root
and password is admin
Open command prompt and enter the following commands:
cd C:\Program Files\MySQL\MySQL Server 8.0\bin
mysql_upgrade -uroot -padmin
mysql -uroot -padmin
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'admin'
A word of caution, all you hard-charging programmers: applying "use strict"
to existing code can be hazardous! This thing is not some feel-good, happy-face sticker that you can slap on the code to make it 'better'. With the "use strict"
pragma, the browser will suddenly THROW exceptions in random places that it never threw before just because at that spot you are doing something that default/loose JavaScript happily allows but strict JavaScript abhors! You may have strictness violations hiding in seldom used calls in your code that will only throw an exception when they do eventually get run - say, in the production environment that your paying customers use!
If you are going to take the plunge, it is a good idea to apply "use strict"
alongside comprehensive unit tests and a strictly configured JSHint build task that will give you some confidence that there is no dark corner of your module that will blow up horribly just because you've turned on Strict Mode. Or, hey, here's another option: just don't add "use strict"
to any of your legacy code, it's probably safer that way, honestly. DEFINITELY DO NOT add "use strict"
to any modules you do not own or maintain, like third party modules.
I think even though it is a deadly caged animal, "use strict"
can be good stuff, but you have to do it right. The best time to go strict is when your project is greenfield and you are starting from scratch. Configure JSHint/JSLint
with all the warnings and options cranked up as tight as your team can stomach, get a good build/test/assert system du jour rigged like Grunt+Karma+Chai
, and only THEN start marking all your new modules as "use strict"
. Be prepared to cure lots of niggly errors and warnings. Make sure everyone understands the gravity by configuring the build to FAIL if JSHint/JSLint
produces any violations.
My project was not a greenfield project when I adopted "use strict"
. As a result, my IDE is full of red marks because I don't have "use strict"
on half my modules, and JSHint complains about that. It's a reminder to me about what refactoring I should do in the future. My goal is to be red mark free due to all of my missing "use strict"
statements, but that is years away now.
Since you copied the table with the SQL produced by SHOW CREATE TABLE MyTable, you could just do the following to load the data into the new table.
INSERT INTO dest_db.dest_table SELECT * FROM source_db.source_table;
If you really want the INSERT statements, then the only way that I know of is to use mysqldump http://dev.mysql.com/doc/refman/5.1/en/mysqldump.htm. You can give it options to just dump data for a specific table and even limit rows.
Use this code for read file with all type of extension file.
string[] sDirectoryInfo = Directory.GetFiles(SourcePath, "*.*");
You can use the following:
extracted_data = data.ix[:,['Column1','Column2']]
Adding some info to the previous answer from @linusg :
sklearn
keeps a release history of all its changes. Think of checking it from time to time. Here is the link to the documentation.
As you can see in the documentation for the version 0.18, a new module was created called model_selection
. Therefore it didn't exist in previous versions.
Update sklearn
and it will work !
This one is working for me for settings environment variable for the test plugin
test {
systemProperties = [
'catalina.home': 'c:/test'
]
println "Starting Tests"
beforeTest { descriptor ->
logger.lifecycle("Running test: " + descriptor)
}
}
If you reconfigure IIS7 to use your new location, then there's no problem. Just test that the new location is working, before deleting the old location.
Change IIS7 Inetpub path
- Open %windir%\system32\inetsrv\config\applicationhost.config and search for
%SystemDrive%\inetpub\wwwroot
- Change the path.
This is late but this may help someone :) :) For adding the view programmatically try like
LinearLayout rlmain = new LinearLayout(this);
LinearLayout.LayoutParams llp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,LinearLayout.LayoutParams.FILL_PARENT);
LinearLayout ll1 = new LinearLayout (this);
ImageView iv = new ImageView(this);
iv.setImageResource(R.drawable.logo);
LinearLayout .LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
iv.setLayoutParams(lp);
ll1.addView(iv);
rlmain.addView(ll1);
setContentView(rlmain, llp);
This will create your entire view programmatcally. You can add any number of view as same. Hope this may help. :)
Using nltk.
from nltk.tokenize import sent_tokenize, word_tokenize
sentences = sent_tokenize("This is a string.")
words_in_each_sentence = word_tokenize(sentences)
You may use TweetTokenizer for parsing casual text with emoticons and such.
Carriage return is "\r"
. Mind the double quotes!
I think you want "\r\n"
btw to put a line break in your text so it will be rendered correctly in different operating systems.
To get a char
from a Scanner
, you can use the findInLine
method.
Scanner sc = new Scanner("abc");
char ch = sc.findInLine(".").charAt(0);
System.out.println(ch); // prints "a"
System.out.println(sc.next()); // prints "bc"
If you need a bunch of char
from a Scanner
, then it may be more convenient to (perhaps temporarily) change the delimiter to the empty string. This will make next()
returns a length-1 string every time.
Scanner sc = new Scanner("abc");
sc.useDelimiter("");
while (sc.hasNext()) {
System.out.println(sc.next());
} // prints "a", "b", "c"
Do you have several swf-files? If your class is imported in one of the swf's, other swf's will also use the same version of the class. One old import with * in one swf will do it. Recompile everything and see if it works.
h2 { display: inline }
Given possible x values, xs
, (think of them as the tick-marks on the x-axis of a plot) and possible y values, ys
, meshgrid
generates the corresponding set of (x, y) grid points---analogous to set((x, y) for x in xs for y in yx)
. For example, if xs=[1,2,3]
and ys=[4,5,6]
, we'd get the set of coordinates {(1,4), (2,4), (3,4), (1,5), (2,5), (3,5), (1,6), (2,6), (3,6)}
.
However, the representation that meshgrid
returns is different from the above expression in two ways:
First, meshgrid
lays out the grid points in a 2d array: rows correspond to different y-values, columns correspond to different x-values---as in list(list((x, y) for x in xs) for y in ys)
, which would give the following array:
[[(1,4), (2,4), (3,4)],
[(1,5), (2,5), (3,5)],
[(1,6), (2,6), (3,6)]]
Second, meshgrid
returns the x and y coordinates separately (i.e. in two different numpy 2d arrays):
xcoords, ycoords = (
array([[1, 2, 3],
[1, 2, 3],
[1, 2, 3]]),
array([[4, 4, 4],
[5, 5, 5],
[6, 6, 6]]))
# same thing using np.meshgrid:
xcoords, ycoords = np.meshgrid([1,2,3], [4,5,6])
# same thing without meshgrid:
xcoords = np.array([xs] * len(ys)
ycoords = np.array([ys] * len(xs)).T
Note, np.meshgrid
can also generate grids for higher dimensions. Given xs, ys, and zs, you'd get back xcoords, ycoords, zcoords as 3d arrays. meshgrid
also supports reverse ordering of the dimensions as well as sparse representation of the result.
Why would we want this form of output?
Apply a function at every point on a grid:
One motivation is that binary operators like (+, -, *, /, **) are overloaded for numpy arrays as elementwise operations. This means that if I have a function def f(x, y): return (x - y) ** 2
that works on two scalars, I can also apply it on two numpy arrays to get an array of elementwise results: e.g. f(xcoords, ycoords)
or f(*np.meshgrid(xs, ys))
gives the following on the above example:
array([[ 9, 4, 1],
[16, 9, 4],
[25, 16, 9]])
Higher dimensional outer product: I'm not sure how efficient this is, but you can get high-dimensional outer products this way: np.prod(np.meshgrid([1,2,3], [1,2], [1,2,3,4]), axis=0)
.
Contour plots in matplotlib: I came across meshgrid
when investigating drawing contour plots with matplotlib for plotting decision boundaries. For this, you generate a grid with meshgrid
, evaluate the function at each grid point (e.g. as shown above), and then pass the xcoords, ycoords, and computed f-values (i.e. zcoords) into the contourf function.
Perhaps try:
var body = document.getElementsByTagName('body')[0];
body.setAttribute("data-body","");
You need to use a global regular expression for this. Try it this way:
str.replace(/"/g, '\\"');
Check out regex syntax and options for the replace function in Using Regular Expressions with JavaScript.
You may try
$("#addRunner input").each(function(){ ... });
Inputs are no selectors, so you do not need the :
Haven't tested it with your code. Just a fast guess!
That means it is timezone naive, so you can't use it with datetime.astimezone
you can give it a timezone like this
import pytz # 3rd party: $ pip install pytz
u = datetime.utcnow()
u = u.replace(tzinfo=pytz.utc) #NOTE: it works only with a fixed utc offset
now you can change timezones
print(u.astimezone(pytz.timezone("America/New_York")))
To get the current time in a given timezone, you could pass tzinfo to datetime.now()
directly:
#!/usr/bin/env python
from datetime import datetime
import pytz # $ pip install pytz
print(datetime.now(pytz.timezone("America/New_York")))
It works for any timezone including those that observe daylight saving time (DST) i.e., it works for timezones that may have different utc offsets at different times (non-fixed utc offset). Don't use tz.localize(datetime.now())
-- it may fail during end-of-DST transition when the local time is ambiguous.
If you want to inspect html, css or maybe you need js console in your mobile browser . You can use excelent tool eruda Using it you have the same Developer Tools on your mobile browser like in your desctop device. Dont forget to upvote :) Here is a link https://github.com/liriliri/eruda
Use a max_allowed_packet
variable issuing a command like
mysql --max_allowed_packet=32M
-u root -p database < dump.sql
Based on the accepted answer and the answer of @LeoCaseiro here is what I ended up using in my case :
@media (max-width: 767px) {
.table-responsive{
overflow-x: auto;
overflow-y: auto;
}
}
@media (min-width: 767px) {
.table-responsive{
overflow: inherit !important; /* Sometimes needs !important */
}
}
on big screens the dropdown won't be hidden behind the reponsive-table and in small screen it will be hidden but it's ok because there is scrolls bar in mobile anyway.
Hope this help someone.
You can only use one color but as many images as you want, here is the format:
background: [ <bg-layer> , ]* <final-bg-layer>
<bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box>{1,2}
<final-bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box>{1,2} || <background-color>
or
background: url(image1.png) center bottom no-repeat, url(image2.png) left top no-repeat;
If you need more colors, make an image of a solid color and use it. I know it’s not what you want to hear, but I hope it helps.
The format is from http://www.css3.info/preview/multiple-backgrounds/
Fetch both the key and the value from the dictionary in the loop:
{% for key, value in mydict.items %}
{{ value }}
{% endfor %}
I find this easier to read and it avoids the need for special coding. I usually need the key and the value inside the loop anyway.
Using Swift 2.1+
let vc = self.storyboard?.instantiateViewControllerWithIdentifier("settingsVC") as! SettingsViewController
self.presentViewController(vc, animated: true, completion: nil)
Not a big fan of the solutions provided (ie: multiple variables, helper classes, looping through 'possibly existing variables'). Below is a solution that instead uses an array as opposed to two separate variables. It's also easily extendable to handle multiple errors should you wish but for simplicity, I've kept it to one flash message:
Redirect with flash message array:
return redirect('/admin/permissions')->with('flash_message', ['success','Updated Successfully','Permission "'. $permission->name .'" updated successfully!']);
Output based on array content:
@if(Session::has('flash_message'))
<script type="text/javascript">
jQuery(document).ready(function(){
bootstrapNotify('{{session('flash_message')[0]}}','{{session('flash_message')[1]}}','{{session('flash_message')[2]}}');
});
</script>
@endif
Unrelated since you might have your own notification method/plugin - but just for clarity - bootstrapNotify is just to initiate bootstrap-notify from http://bootstrap-notify.remabledesigns.com/:
function bootstrapNotify(type,title = 'Notification',message) {
switch (type) {
case 'success':
icon = "la-check-circle";
break;
case 'danger':
icon = "la-times-circle";
break;
case 'warning':
icon = "la-exclamation-circle";
}
$.notify({message: message, title : title, icon : "icon la "+ icon}, {type: type,allow_dismiss: true,newest_on_top: false,mouse_over: true,showProgressbar: false,spacing: 10,timer: 4000,placement: {from: "top",align: "right"},offset: {x: 30,y: 30},delay: 1000,z_index: 10000,animate: {enter: "animated bounce",exit: "animated fadeOut"}});
}
The main reason to avoid using the matrix
class is that a) it's inherently 2-dimensional, and b) there's additional overhead compared to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free to use the matrix class... Personally I find it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot
instead of matrixmultiply
.
E.g.
import numpy as np
x = np.arange(9).reshape((3,3))
y = np.arange(3)
print np.dot(x,y)
Or in newer versions of numpy, simply use x.dot(y)
Personally, I find it much more readable than the *
operator implying matrix multiplication...
For arrays in Python 3.5, use x @ y
.
simpally add this code:
<asp:FilteredTextBoxExtender ID="txtAltitudeMin_FilteredTextBoxExtender" runat="server" Enabled="True" TargetControlID="txtAltitudeMin" FilterType="Numbers"></asp:FilteredTextBoxExtender>
OCR which stands for Optical Character Recognition is a computer vision technique used to identify the different types of handwritten digits that are used in common mathematics. To perform OCR in OpenCV we will use the KNN algorithm which detects the nearest k neighbors of a particular data point and then classifies that data point based on the class type detected for n neighbors.
Data Used
This data contains 5000 handwritten digits where there are 500 digits for every type of digit. Each digit is of 20×20 pixel dimensions. We will split the data such that 250 digits are for training and 250 digits are for testing for every class.
Below is the implementation.
import numpy as np import cv2 # Read the image image = cv2.imread( 'digits.png' ) # gray scale conversion gray_img = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY) # We will divide the image # into 5000 small dimensions # of size 20x20 divisions = list (np.hsplit(i, 100 ) for i in np.vsplit(gray_img, 50 )) # Convert into Numpy array # of size (50,100,20,20) NP_array = np.array(divisions) # Preparing train_data # and test_data. # Size will be (2500,20x20) train_data = NP_array[:,: 50 ].reshape( - 1 , 400 ).astype(np.float32) # Size will be (2500,20x20) test_data = NP_array[:, 50 : 100 ].reshape( - 1 , 400 ).astype(np.float32) # Create 10 different labels # for each type of digit k = np.arange( 10 ) train_labels = np.repeat(k, 250 )[:,np.newaxis] test_labels = np.repeat(k, 250 )[:,np.newaxis] # Initiate kNN classifier knn = cv2.ml.KNearest_create() # perform training of data knn.train(train_data, cv2.ml.ROW_SAMPLE, train_labels) # obtain the output from the # classifier by specifying the # number of neighbors. ret, output ,neighbours, distance = knn.findNearest(test_data, k = 3 ) # Check the performance and # accuracy of the classifier. # Compare the output with test_labels # to find out how many are wrong. matched = output = = test_labels correct_OP = np.count_nonzero(matched) #Calculate the accuracy. accuracy = (correct_OP * 100.0 ) / (output.size) # Display accuracy. print (accuracy) |
Output
91.64
Well, I decided to workout myself on my question to solve the above problem. What I wanted is to implement a simple OCR using KNearest or SVM features in OpenCV. And below is what I did and how. (it is just for learning how to use KNearest for simple OCR purposes).
1) My first question was about letter_recognition.data
file that comes with OpenCV samples. I wanted to know what is inside that file.
It contains a letter, along with 16 features of that letter.
And this SOF
helped me to find it. These 16 features are explained in the paper Letter Recognition Using Holland-Style Adaptive Classifiers
.
(Although I didn't understand some of the features at the end)
2) Since I knew, without understanding all those features, it is difficult to do that method. I tried some other papers, but all were a little difficult for a beginner.
So I just decided to take all the pixel values as my features. (I was not worried about accuracy or performance, I just wanted it to work, at least with the least accuracy)
I took the below image for my training data:
(I know the amount of training data is less. But, since all letters are of the same font and size, I decided to try on this).
To prepare the data for training, I made a small code in OpenCV. It does the following things:
key press manually
. This time we press the digit key ourselves corresponding to the letter in the box..txt
files.At the end of the manual classification of digits, all the digits in the training data (train.png
) are labeled manually by ourselves, image will look like below:
Below is the code I used for the above purpose (of course, not so clean):
import sys
import numpy as np
import cv2
im = cv2.imread('pitrain.png')
im3 = im.copy()
gray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
blur = cv2.GaussianBlur(gray,(5,5),0)
thresh = cv2.adaptiveThreshold(blur,255,1,1,11,2)
################# Now finding Contours ###################
contours,hierarchy = cv2.findContours(thresh,cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE)
samples = np.empty((0,100))
responses = []
keys = [i for i in range(48,58)]
for cnt in contours:
if cv2.contourArea(cnt)>50:
[x,y,w,h] = cv2.boundingRect(cnt)
if h>28:
cv2.rectangle(im,(x,y),(x+w,y+h),(0,0,255),2)
roi = thresh[y:y+h,x:x+w]
roismall = cv2.resize(roi,(10,10))
cv2.imshow('norm',im)
key = cv2.waitKey(0)
if key == 27: # (escape to quit)
sys.exit()
elif key in keys:
responses.append(int(chr(key)))
sample = roismall.reshape((1,100))
samples = np.append(samples,sample,0)
responses = np.array(responses,np.float32)
responses = responses.reshape((responses.size,1))
print "training complete"
np.savetxt('generalsamples.data',samples)
np.savetxt('generalresponses.data',responses)
Now we enter in to training and testing part.
For the testing part, I used the below image, which has the same type of letters I used for the training phase.
For training we do as follows:
.txt
files we already saved earlierFor testing purposes, we do as follows:
I included last two steps (training and testing) in single code below:
import cv2
import numpy as np
####### training part ###############
samples = np.loadtxt('generalsamples.data',np.float32)
responses = np.loadtxt('generalresponses.data',np.float32)
responses = responses.reshape((responses.size,1))
model = cv2.KNearest()
model.train(samples,responses)
############################# testing part #########################
im = cv2.imread('pi.png')
out = np.zeros(im.shape,np.uint8)
gray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
thresh = cv2.adaptiveThreshold(gray,255,1,1,11,2)
contours,hierarchy = cv2.findContours(thresh,cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE)
for cnt in contours:
if cv2.contourArea(cnt)>50:
[x,y,w,h] = cv2.boundingRect(cnt)
if h>28:
cv2.rectangle(im,(x,y),(x+w,y+h),(0,255,0),2)
roi = thresh[y:y+h,x:x+w]
roismall = cv2.resize(roi,(10,10))
roismall = roismall.reshape((1,100))
roismall = np.float32(roismall)
retval, results, neigh_resp, dists = model.find_nearest(roismall, k = 1)
string = str(int((results[0][0])))
cv2.putText(out,string,(x,y+h),0,1,(0,255,0))
cv2.imshow('im',im)
cv2.imshow('out',out)
cv2.waitKey(0)
And it worked, below is the result I got:
Here it worked with 100% accuracy. I assume this is because all the digits are of the same kind and the same size.
But anyway, this is a good start to go for beginners (I hope so).
More readable way of achieving this (not a fan of single line ansible tasks)
- local_action:
module: copy
content: "{{ foo_result }}"
dest: /path/to/destination/file
For Power-Shell
./adb shell getprop | Select-String -Pattern '(model)|(version.sdk)|(manufacturer)|(platform)|(serialno)|(product.name)|(brand)'
For linux(burrowing asnwer from @0x8BADF00D)
adb shell getprop | grep "model\|version.sdk\|manufacturer\|hardware\|platform\|revision\|serialno\|product.name\|brand"
For single string find in power shell
./adb shell getprop | Select-String -Pattern 'model'
or
./adb shell getprop | Select-String -Pattern '(model)'
For multiple
./adb shell getprop | Select-String -Pattern '(a|b|c|d)'
Since you also have PHP in the tag, I'm going to suggest some server side options.
The easiest solution is the one most people suggest here. The problem I generally have with this, is that it can causes your CSS files or <style> tags to be up to 20 times bigger than your html documents and can cause browser slowdowns for parsing and processing tags that it can't understand -moz-border-radius
vs -webkit-border-radius
The second best solution(i've found) is to have php output your actual css file i.e.
<link rel="stylesheet" type="text/css" href="mycss.php">
where
<?php header("Content-Type: text/css"); if( preg_match("/chrome/", $_SERVER['HTTP_USER_AGENT']) ) { // output chrome specific css style } else { // output default css style } ?>
This allows you to create smaller easier to process files for the browser.
The best method I've found, is specific to Apache though. The method is to use mod_rewrite or mod_perl's PerlMapToStorageHandler to remap the URL to a file on the system based on the rendering engine.
say your website is http://www.myexample.com/
and it points to /srv/www/html
. For chrome, if you ask for main.css, instead of loading /srv/www/html/main.css
it checks to see if there is a /srv/www/html/main.webkit.css
and if it exists, it dump that, else it'll output the main.css. For IE, it tries main.trident.css
, for firefox it tries main.gecko.css
. Like above, it allows me to create smaller, more targeted, css files, but it also allows me to use caching better, as the browser will attempt to redownload the file, and the web server will present the browser with proper 304's to tell it, you don't need to redownload it. It also allows my web developers a bit more freedom without for them having to write backend code to target platforms. I also have .js files being redirected to javascript engines as well, for main.js
, in chrome it tries main.v8.js
, in safari, main.nitro.js
, in firefox, main.gecko.js
. This allows for outputting of specific javascript that will be faster(less browser testing code/feature testing). Granted the developers don't have to target specific and can write a main.js
and not make main.<js engine>.js
and it'll load that normally. i.e. having a main.js
and a main.jscript.js
file means that IE gets the jscript one, and everyone else gets the default js, same with the css files.
Alejandros answer worked for me, but as I'm using the awesome-typescript-loader
with webpack 4, I also had to add the tsconfig-paths-webpack-plugin
to my webpack.config file for it to resolve correctly
You can make a alias in your ~/.bashrc file :
alias curl="curl -x <proxy_host>:<proxy_port>"
Another solution is to use (maybe the better solution) the ~/.curlrc
file (create it if it does not exist) :
proxy = <proxy_host>:<proxy_port>
There's not really any "raw string"; there are raw string literals, which are exactly the string literals marked by an 'r'
before the opening quote.
A "raw string literal" is a slightly different syntax for a string literal, in which a backslash, \
, is taken as meaning "just a backslash" (except when it comes right before a quote that would otherwise terminate the literal) -- no "escape sequences" to represent newlines, tabs, backspaces, form-feeds, and so on. In normal string literals, each backslash must be doubled up to avoid being taken as the start of an escape sequence.
This syntax variant exists mostly because the syntax of regular expression patterns is heavy with backslashes (but never at the end, so the "except" clause above doesn't matter) and it looks a bit better when you avoid doubling up each of them -- that's all. It also gained some popularity to express native Windows file paths (with backslashes instead of regular slashes like on other platforms), but that's very rarely needed (since normal slashes mostly work fine on Windows too) and imperfect (due to the "except" clause above).
r'...'
is a byte string (in Python 2.*), ur'...'
is a Unicode string (again, in Python 2.*), and any of the other three kinds of quoting also produces exactly the same types of strings (so for example r'...'
, r'''...'''
, r"..."
, r"""..."""
are all byte strings, and so on).
Not sure what you mean by "going back" - there is no intrinsically back and forward directions, because there's no raw string type, it's just an alternative syntax to express perfectly normal string objects, byte or unicode as they may be.
And yes, in Python 2.*, u'...'
is of course always distinct from just '...'
-- the former is a unicode string, the latter is a byte string. What encoding the literal might be expressed in is a completely orthogonal issue.
E.g., consider (Python 2.6):
>>> sys.getsizeof('ciao')
28
>>> sys.getsizeof(u'ciao')
34
The Unicode object of course takes more memory space (very small difference for a very short string, obviously ;-).
//Component. home.ts :
contacts:IContacts[];
ionViewDidLoad() {
this.rest.getContacts()
.subscribe( res=> this.contacts= res as IContacts[]) ;
// reorderArray. accepts only Arrays
Reorder(indexes){
reorderArray(this.contacts, indexes)
}
// Service . res.ts
getContacts(): Observable<IContacts[]> {
return this.http.get<IContacts[]>(this.apiUrl+"?results=5")
And it works fine
have u tried in pgadmin executing query with " EXECUTE QUERY WRITE RESULT TO FILE "
option
its only export the data, else try like
pg_dump -t view_name DB_name > db.sql
-t option used for ==> Dump only tables (or views or sequences) matching table, refer
File Descriptors (FD) :
$ ls mydir 2>errorsfile.txt
The file descriptor for standard error is 2.
If there is no any directory named as mydir then the output of command will be save to file errorfile.txt
Using "2>" we re-direct the error output to a file named "errorfile.txt"
Thus, program output is not cluttered with errors.
I hope you got your answer.
When use codeIgniter Framework then refer this active records link. how the data interact with structure and more.
The following functions allow you to build SQL SELECT statements.
Selecting Data
$this->db->get();
Runs the selection query and returns the result. Can be used by itself to retrieve all records from a table:
$query = $this->db->get('mytable');
With access to each row
$query = $this->db->get('mytable');
foreach ($query->result() as $row)
{
echo $row->title;
}
Where clues
$this->db->get_where();
EG:
$query = $this->db->get_where('mytable', array('id' => $id), $limit, $offset);
Select field
$this->db->select('title, content, date');
$query = $this->db->get('mytable');
// Produces: SELECT title, content, date FROM mytable
E.G
$this->db->select('(SELECT SUM(payments.amount) FROM payments WHERE payments.invoice_id=4') AS amount_paid', FALSE);
$query = $this->db->get('mytable');
JObject obj = JObject.Parse(json);
var attributes = obj["parent"]["child"]...["your desired element"].ToList<JToken>();
foreach (JToken attribute in attributes)
{
JProperty jProperty = attribute.ToObject<JProperty>();
string propertyName = jProperty.Name;
}
Let us see a more updated approach to this question:
Import AudioToolbox
func noteSelector(noteNumber: String) {
if let soundURL = Bundle.main.url(forResource: noteNumber, withExtension: "wav") {
var mySound: SystemSoundID = 0
AudioServicesCreateSystemSoundID(soundURL as CFURL, &mySound)
AudioServicesPlaySystemSound(mySound)
}
I found a way to automate running the clean before you debug your code. (Warning, this runs everytime you hit the button, even for hot restart)
First, find the Run > Edit Configurations Menu
Click the External tool '+' icon under Before launch: External tool, Activate tool window.