If your class performs all of its initialization in the constructor, then @PostConstruct
is indeed redundant.
However, if your class has its dependencies injected using setter methods, then the class's constructor cannot fully initialize the object, and sometimes some initialization needs to be performed after all the setter methods have been called, hence the use case of @PostConstruct
.
You're thinking of Boolean algebra.
There is no explicitly defined limit. The amount of available address space forms a practical limit.
(Taken from this site). See the docs on Numeric Types where you'll see that Long integers have unlimited precision
. In Python 2, Integers will automatically switch to longs when they grow beyond their limit:
>>> import sys
>>> type(sys.maxsize)
<type 'int'>
>>> type(sys.maxsize+1)
<type 'long'>
for integers we have
The maximum value of an int can be found in Python 2.x with sys.maxint
. It was removed in Python 3, but sys.maxsize
can often be used instead. From the changelog:
The sys.maxint constant was removed, since there is no longer a limit to the value of integers. However, sys.maxsize can be used as an integer larger than any practical list or string index. It conforms to the implementation’s “natural” integer size and is typically the same as sys.maxint in previous releases on the same platform (assuming the same build options).
and, for anyone interested in the difference (Python 2.x):
sys.maxint The largest positive integer supported by Python’s regular integer type. This is at least 2**31-1. The largest negative integer is -maxint-1 — the asymmetry results from the use of 2’s complement binary arithmetic.
sys.maxsize The largest positive integer supported by the platform’s Py_ssize_t type, and thus the maximum size lists, strings, dicts, and many other containers can have.
and for completeness, here's the Python 3 version:
sys.maxsize An integer giving the maximum value a variable of type Py_ssize_t can take. It’s usually 2^31 - 1 on a 32-bit platform and 2^63 - 1 on a 64-bit platform.
There's float("inf")
and float("-inf")
. These can be compared to other numeric types:
>>> import sys
>>> float("inf") > sys.maxsize
True
I also face same issue after some search I found a good solution as @GreyBeardedGeek mentioned that setTimeout is the key of this solution.He is totally correct. In your method you just need to add setTimeout and your problem will be solved.
setTimeout(() => this.inputEl.nativeElement.focus(), 0);
The only solution that worked for me and $.each
was definitely causing the error. so i used for loop
and it's not throwing error anymore.
Example code
$.ajax({
type: 'GET',
url: 'https://example.com/api',
data: { get_param: 'value' },
success: function (data) {
for (var i = 0; i < data.length; ++i) {
console.log(data[i].NameGerman);
}
}
});
SELECT tab.*,
row_number() OVER () as rnum
FROM tab;
Here's the relevant section in the docs.
P.S. This, in fact, fully matches the answer in the referenced question.
The Java keyword list specifies the goto keyword, but it is marked as "not used".
This was probably done in case it were to be added to a later version of Java.
If goto weren't on the list, and it were added to the language later on, existing code that used the word goto as an identifier (variable name, method name, etcetera) would break. But because goto is a keyword, such code will not even compile in the present, and it remains possible to make it actually do something later on, without breaking existing code.
A simpler way is to use the below on the command line
find /home/www/ -type f|xargs perl -pi -e 's/subdomainA\.example\.com/subdomainB.example.com/g'
Use enumerate()
like so:
def draw_menu(options, selected_index):
for counter, option in enumerate(options):
if counter == selected_index:
print " [*] %s" % option
else:
print " [ ] %s" % option
options = ['Option 0', 'Option 1', 'Option 2', 'Option 3']
draw_menu(options, 2)
Note: You can optionally put parenthesis around counter, option
, like (counter, option)
, if you want, but they're extraneous and not normally included.
Create a .env file that will hold your credentials at the root of your project and leave it out of versioning:
$ echo ".env" >> .gitignore
In the .env file, add the variables (adapt them according to your installation):
$ echo "DJANGO_SETTINGS_MODULE=myproject.settings.production"> .env
#50 caracter random key
$ echo "SECRET_KEY='####'">> .env
To use them, put this on top of your production.py settings file:
import os
env = os.environ.copy()
SECRET_KEY = env['SECRET_KEY']
Publish it to Heroku using this gem: http://github.com/ddollar/heroku-config.git
$ heroku plugins:install git://github.com/ddollar/heroku-config.git
$ heroku config:push
This way you avoid to change virtualenv files.
*Based on this tutorial
LINQ is a query tool (Q = Query) - so there is no magic LINQ way to update just the single row, except through the (object-oriented) data-context (in the case of LINQ-to-SQL). To update data, you need to fetch it out, update the record, and submit the changes:
using(var ctx = new FooContext()) {
var obj = ctx.Bars.Single(x=>x.Id == id);
obj.SomeProp = 123;
ctx.SubmitChanges();
}
Or write an SP that does the same in TSQL, and expose the SP through the data-context:
using(var ctx = new FooContext()) {
ctx.UpdateBar(id, 123);
}
If it does not work by using the click()
method like suggested in the accepted answer, then you can try this:
//trigger second button
$("#second").mousedown();
$("#second").mouseup();
I have fixed the same issue with below steps
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('SHA384', 'composer-setup.php') === 'the-provided-hash-code') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php php -r "unlink('composer-setup.php');"
Everything is working fine now because the composer.phar
file is available within the current project directory.
Copied from https://stackoverflow.com/questions/21670709/running-composer-returns-could-not-open-input-file-composer-phar/51907013#51907013
thanks
Update 2019 - Bootstrap 4
You can simply use the SASS mixin to change the number of cards across in each breakpoint / grid tier.
.card-columns {
@include media-breakpoint-only(xl) {
column-count: 5;
}
@include media-breakpoint-only(lg) {
column-count: 4;
}
@include media-breakpoint-only(md) {
column-count: 3;
}
@include media-breakpoint-only(sm) {
column-count: 2;
}
}
SASS Demo: http://www.codeply.com/go/FPBCQ7sOjX
Or, CSS only like this...
@media (min-width: 576px) {
.card-columns {
column-count: 2;
}
}
@media (min-width: 768px) {
.card-columns {
column-count: 3;
}
}
@media (min-width: 992px) {
.card-columns {
column-count: 4;
}
}
@media (min-width: 1200px) {
.card-columns {
column-count: 5;
}
}
CSS-only Demo: https://www.codeply.com/go/FIqYTyyWWZ
I know this is old but this seems to work well for me in 2020...
Using the border-image CSS property I was able to quickly manipulate the borders for this fading purpose.
Note: I don't think border-image
works well with border-radius
... I seen someone saying that somewhere but for this purpose it works well.
1 Liner:
CSS
.bbdr_rfade_1 { border: 4px solid; border-image: linear-gradient(90deg, rgba(60,74,83,0.90), rgba(60,74,83,.00)) 1; border-left:none; border-top:none; border-right:none; }
HTML
<div class = 'bbdr_rfade_1'>Oh I am so going to not up-vote this guy...</div>
Do you need the cursor to be a "wait" cursor only when it's over that particular page/usercontrol? If not, I'd suggest using Mouse.OverrideCursor:
Mouse.OverrideCursor = Cursors.Wait;
try
{
// do stuff
}
finally
{
Mouse.OverrideCursor = null;
}
This overrides the cursor for your application rather than just for a part of its UI, so the problem you're describing goes away.
I've got this one, which sets a cookie. And as you can see, it first checks if the language is posted by the user. Because browser language not always tells about the user.
<?php
$lang = getenv("HTTP_ACCEPT_LANGUAGE");
$set_lang = explode(',', $lang);
if (isset($_POST['lang']))
{
$taal = $_POST['lang'];
setcookie("lang", $taal);
header('Location: /p/');
}
else
{
setcookie("lang", $set_lang[0]);
echo $set_lang[0];
echo '<br>';
echo $set_lang[1];
header('Location: /p/');
}
?>
newer .net versions allow you to use $ in front of the literal which allows you to use variables inside like follows:
var x = $"Line 1{Environment.NewLine}Line 2{Environment.NewLine}Line 3";
To discover any constraints used, use the code below:
-- Set the long data type for display purposes to 500000.
SET LONG 500000
-- Define a session scope variable.
VARIABLE output CLOB
-- Query the table definition through the <code>DBMS_METADATA</code> package.
SELECT dbms_metadata.get_ddl('TABLE','[Table Described]') INTO :output FROM dual;
This essentially shows a create statement for how the referenced table is made. By knowing how the table is created, you can see all of the table constraints.
Answer taken from Michael McLaughlin's blog: http://michaelmclaughlin.info/db1/lesson-5-querying-data/lab-5-querying-data/ From his Database Design I class.
# print line number 52
sed -n '52p' # method 1
sed '52!d' # method 2
sed '52q;d' # method 3, efficient on large files
method 3 efficient on large files
fastest way to display specific lines
Almost all Magento Models have a corresponding Collection object that can be used to fetch multiple instances of a Model.
To instantiate a Product collection, do the following
$collection = Mage::getModel('catalog/product')->getCollection();
Products are a Magento EAV style Model, so you'll need to add on any additional attributes that you want to return.
$collection = Mage::getModel('catalog/product')->getCollection();
//fetch name and orig_price into data
$collection->addAttributeToSelect('name');
$collection->addAttributeToSelect('orig_price');
There's multiple syntaxes for setting filters on collections. I always use the verbose one below, but you might want to inspect the Magento source for additional ways the filtering methods can be used.
The following shows how to filter by a range of values (greater than AND less than)
$collection = Mage::getModel('catalog/product')->getCollection();
$collection->addAttributeToSelect('name');
$collection->addAttributeToSelect('orig_price');
//filter for products whose orig_price is greater than (gt) 100
$collection->addFieldToFilter(array(
array('attribute'=>'orig_price','gt'=>'100'),
));
//AND filter for products whose orig_price is less than (lt) 130
$collection->addFieldToFilter(array(
array('attribute'=>'orig_price','lt'=>'130'),
));
While this will filter by a name that equals one thing OR another.
$collection = Mage::getModel('catalog/product')->getCollection();
$collection->addAttributeToSelect('name');
$collection->addAttributeToSelect('orig_price');
//filter for products who name is equal (eq) to Widget A, or equal (eq) to Widget B
$collection->addFieldToFilter(array(
array('attribute'=>'name','eq'=>'Widget A'),
array('attribute'=>'name','eq'=>'Widget B'),
));
A full list of the supported short conditionals (eq,lt, etc.) can be found in the _getConditionSql
method in lib/Varien/Data/Collection/Db.php
Finally, all Magento collections may be iterated over (the base collection class implements on of the the iterator interfaces). This is how you'll grab your products once filters are set.
$collection = Mage::getModel('catalog/product')->getCollection();
$collection->addAttributeToSelect('name');
$collection->addAttributeToSelect('orig_price');
//filter for products who name is equal (eq) to Widget A, or equal (eq) to Widget B
$collection->addFieldToFilter(array(
array('attribute'=>'name','eq'=>'Widget A'),
array('attribute'=>'name','eq'=>'Widget B'),
));
foreach ($collection as $product) {
//var_dump($product);
var_dump($product->getData());
}
On Dashboard, Go to User Accounts, Select user, Click Change Password, Fill the New Password, Go.
Sorry for joining the party late, but there is a way to do this with Microsoft public API.
Here's what you need:
System.Net.Http.dll
System.Net.Http.Formatting.dll
Note The Nuget packages come with more assemblies, but at the time of writing you only need the above.
Once you have the assemblies referenced, the code can look like this (using .NET 4.5 for convenience):
public static async Task ParseFiles(
Stream data, string contentType, Action<string, Stream> fileProcessor)
{
var streamContent = new StreamContent(data);
streamContent.Headers.ContentType = MediaTypeHeaderValue.Parse(contentType);
var provider = await streamContent.ReadAsMultipartAsync();
foreach (var httpContent in provider.Contents)
{
var fileName = httpContent.Headers.ContentDisposition.FileName;
if (string.IsNullOrWhiteSpace(fileName))
{
continue;
}
using (Stream fileContents = await httpContent.ReadAsStreamAsync())
{
fileProcessor(fileName, fileContents);
}
}
}
As for usage, say you have the following WCF REST method:
[OperationContract]
[WebInvoke(Method = WebRequestMethods.Http.Post, UriTemplate = "/Upload")]
void Upload(Stream data);
You could implement it like so
public void Upload(Stream data)
{
MultipartParser.ParseFiles(
data,
WebOperationContext.Current.IncomingRequest.ContentType,
MyProcessMethod);
}
Edit:
Are you trying to do sth like this? See: http://twitter.github.com/bootstrap/javascript.html#tabs
See the working example: http://jsfiddle.net/U6aKT/
<a href="#id">go to id</a>
<div style="margin-top:2000px;"></div>
<a id="id">id</a>
// Disable #x
$( "#x" ).prop( "disabled", true );
// Enable #x
$( "#x" ).prop( "disabled", false );
Sometimes you need to disable/enable the form element like input or textarea. Jquery helps you to easily make this with setting disabled attribute to "disabled". For e.g.:
//To disable
$('.someElement').attr('disabled', 'disabled');
To enable disabled element you need to remove "disabled" attribute from this element or empty it's string. For e.g:
//To enable
$('.someElement').removeAttr('disabled');
// OR you can set attr to ""
$('.someElement').attr('disabled', '');
refer :http://garmoncheg.blogspot.fr/2011/07/how-to-disableenable-element-with.html
For me it turned out that I had a @JsonManagedReferece
in one entity without a @JsonBackReference
in the other referenced entity. This caused the marshaller to throw an error.
Here's one way: You basically re-write your sort function to take a list of sort functions, each sort function compares the attributes you want to test, on each sort test, you look and see if the cmp function returns a non-zero return if so break and send the return value. You call it by calling a Lambda of a function of a list of Lambdas.
Its advantage is that it does single pass through the data not a sort of a previous sort as other methods do. Another thing is that it sorts in place, whereas sorted seems to make a copy.
I used it to write a rank function, that ranks a list of classes where each object is in a group and has a score function, but you can add any list of attributes. Note the un-lambda-like, though hackish use of a lambda to call a setter. The rank part won't work for an array of lists, but the sort will.
#First, here's a pure list version
my_sortLambdaLst = [lambda x,y:cmp(x[0], y[0]), lambda x,y:cmp(x[1], y[1])]
def multi_attribute_sort(x,y):
r = 0
for l in my_sortLambdaLst:
r = l(x,y)
if r!=0: return r #keep looping till you see a difference
return r
Lst = [(4, 2.0), (4, 0.01), (4, 0.9), (4, 0.999),(4, 0.2), (1, 2.0), (1, 0.01), (1, 0.9), (1, 0.999), (1, 0.2) ]
Lst.sort(lambda x,y:multi_attribute_sort(x,y)) #The Lambda of the Lambda
for rec in Lst: print str(rec)
Here's a way to rank a list of objects
class probe:
def __init__(self, group, score):
self.group = group
self.score = score
self.rank =-1
def set_rank(self, r):
self.rank = r
def __str__(self):
return '\t'.join([str(self.group), str(self.score), str(self.rank)])
def RankLst(inLst, group_lambda= lambda x:x.group, sortLambdaLst = [lambda x,y:cmp(x.group, y.group), lambda x,y:cmp(x.score, y.score)], SetRank_Lambda = lambda x, rank:x.set_rank(rank)):
#Inner function is the only way (I could think of) to pass the sortLambdaLst into a sort function
def multi_attribute_sort(x,y):
r = 0
for l in sortLambdaLst:
r = l(x,y)
if r!=0: return r #keep looping till you see a difference
return r
inLst.sort(lambda x,y:multi_attribute_sort(x,y))
#Now Rank your probes
rank = 0
last_group = group_lambda(inLst[0])
for i in range(len(inLst)):
rec = inLst[i]
group = group_lambda(rec)
if last_group == group:
rank+=1
else:
rank=1
last_group = group
SetRank_Lambda(inLst[i], rank) #This is pure evil!! The lambda purists are gnashing their teeth
Lst = [probe(4, 2.0), probe(4, 0.01), probe(4, 0.9), probe(4, 0.999), probe(4, 0.2), probe(1, 2.0), probe(1, 0.01), probe(1, 0.9), probe(1, 0.999), probe(1, 0.2) ]
RankLst(Lst, group_lambda= lambda x:x.group, sortLambdaLst = [lambda x,y:cmp(x.group, y.group), lambda x,y:cmp(x.score, y.score)], SetRank_Lambda = lambda x, rank:x.set_rank(rank))
print '\t'.join(['group', 'score', 'rank'])
for r in Lst: print r
It doesn't look like the Rails API exposes methods to do this generically. You could try accessing the underlying connection and using it's methods, e.g. for MySQL:
st = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st.close
I'm not sure if there are other ramifications to doing this (connections left open, etc). I would trace the Rails code for a normal update to see what it's doing aside from the actual query.
Using prepared queries can save you a small amount of time in the database, but unless you're doing this a million times in a row, you'd probably be better off just building the update with normal Ruby substitution, e.g.
ActiveRecord::Base.connection.execute("update table set f1=#{ActiveRecord::Base.sanitize(f1)}")
or using ActiveRecord like the commenters said.
The one-to-many table relationship looks as follows:
In a relational database system, a one-to-many table relationship links two tables based on a Foreign Key
column in the child which references the Primary Key
of the parent table row.
In the table diagram above, the post_id
column in the post_comment
table has a Foreign Key
relationship with the post
table id Primary Key
column:
ALTER TABLE
post_comment
ADD CONSTRAINT
fk_post_comment_post_id
FOREIGN KEY (post_id) REFERENCES post
The one-to-one table relationship looks as follows:
In a relational database system, a one-to-one table relationship links two tables based on a Primary Key
column in the child which is also a Foreign Key
referencing the Primary Key
of the parent table row.
Therefore, we can say that the child table shares the Primary Key
with the parent table.
In the table diagram above, the id
column in the post_details
table has also a Foreign Key
relationship with the post
table id
Primary Key
column:
ALTER TABLE
post_details
ADD CONSTRAINT
fk_post_details_id
FOREIGN KEY (id) REFERENCES post
The many-to-many table relationship looks as follows:
In a relational database system, a many-to-many table relationship links two parent tables via a child table which contains two Foreign Key
columns referencing the Primary Key
columns of the two parent tables.
In the table diagram above, the post_id
column in the post_tag
table has also a Foreign Key
relationship with the post
table id Primary Key
column:
ALTER TABLE
post_tag
ADD CONSTRAINT
fk_post_tag_post_id
FOREIGN KEY (post_id) REFERENCES post
And, the tag_id
column in the post_tag
table has a Foreign Key
relationship with the tag
table id Primary Key
column:
ALTER TABLE
post_tag
ADD CONSTRAINT
fk_post_tag_tag_id
FOREIGN KEY (tag_id) REFERENCES tag
Reportlab. There is an open source version, and a paid version which adds the Report Markup Language (an alternative method of defining your document).
By this you can get any index in *ngFor
loop in ANGULAR ...
<ul>
<li *ngFor="let object of myArray; let i = index; let first = first ;let last = last;">
<div *ngIf="first">
// write your code...
</div>
<div *ngIf="last">
// write your code...
</div>
</li>
</ul>
We can use these alias in *ngFor
index
: number
: let i = index
to get all index of object.first
: boolean
: let first = first
to get first index of object.last
: boolean
: let last = last
to get last index of object.odd
: boolean
: let odd = odd
to get odd index of object.even
: boolean
: let even = even
to get even index of object.If you want each individual web page to load the chosen content and are using asp.net. Just apply it as the first tag under the heading tag in Views>shared>Layout.cshtml
just a tip
If you don't care about supporting old browsers, you can use :not()
to exclude that element:
.parent:hover span:not(:hover) {
border: 10px solid red;
}
Demo: http://jsfiddle.net/vz9A9/1/
If you do want to support them, the I guess you'll have to either use JavaScript or override the CSS properties again:
.parent span:hover {
border: 10px solid green;
}
Your android app needs to correct 12-digit number id (aka GCM Project Number). If this 12-digit number is incorrect, then you will also get this error.
This 12-digit number is found in your Google Play Console under your specific app, 'Service & API' -> 'LINKED SENDER IDS'
The amount of capacity which is to be exhausted for the HashMap to increase its capacity ?
Load factor is by default 0.75 of the initial capacity (16) therefore 25% of the buckets will be free before there is an increase in the capacity & this makes many new buckets with new hashcodes pointing to them to exist just after the increase in the number of buckets.
If you set the loading factor to say 1.0 then something very interesting might happen.
Say you are adding an object x to your hashmap whose hashCode is 888 & in your hashmap the bucket representing the hashcode is free , so the object x gets added to the bucket, but now again say if you are adding another object y whose hashCode is also 888 then your object y will get added for sure BUT at the end of the bucket (because the buckets are nothing but linkedList implementation storing key,value & next) now this has a performance impact ! Since your object y is no longer present in the head of the bucket if you perform a lookup the time taken is not going to be O(1) this time it depends on how many items are there in the same bucket. This is called hash collision by the way & this even happens when your loading factor is less than 1.
Lower load factor = more free buckets = less chances of collision = high performance = high space requirement.
Correct me if i am wrong somewhere.
You can use the function array_key_exists
to do that.
For example,
$a=array("a"=>"Dog","b"=>"Cat");
if (array_key_exists("a",$a))
{
echo "Key exists!";
}
else
{
echo "Key does not exist!";
}
PS : Example taken from here.
Try this instead:
sumall = summ + sumd + sumy
print "The sum of your numbers is", sumall
sumall = str(sumall) # add this line
sumln = (int(sumall[0])+int(sumall[1]))
print "Your lucky number is", sumln
sumall
is a number, and you can't access its digits using the subscript notation (sumall[0]
, sumall[1]
). For that to work, you'll need to transform it back to a string.
You're on the right track - the keyword you should be googling is Regular Expressions. R does support them in a more direct way than this using grep()
and a few other alternatives.
Here's a detailed discussion: http://www.regular-expressions.info/rlanguage.html
There is no official datepicker for bootstrap; as such, you should explicitly state which one you're using.
If you're using eternicode/bootstrap-datepicker, there's a startDate option. As discussed directly under the Options section in the README:
All options that take a "Date" can handle a Date object; a String formatted according to the given format; or a timedelta relative to today, eg '-1d', '+6m +1y', etc, where valid units are 'd' (day), 'w' (week), 'm' (month), and 'y' (year).
So you would do:
$('#datepicker').datepicker({
startDate: '+1d'
})
Placing your list view in a Flexible widget may also help,
Flexible( fit: FlexFit.tight, child: _buildYourListWidget(..),)
This is how Visual Studio 2013 does it:
Single item:
comboBox1->Items->AddRange(gcnew cli::array< System::Object^ >(1) { L"Combo Item 1" });
Multiple Items:
comboBox1->Items->AddRange(gcnew cli::array< System::Object^ >(3)
{
L"Combo Item 1",
L"Combo Item 2",
L"Combo Item 3"
});
No need to do class overrides or include anything else. And yes the comboBox1->SelectedItem
and comboBox1->SelectedIndex
calls still work.
Assuming your DateColumn formatted 3312018.0 should be converted to 03/31/2018 as a string. And, some records are missing or 0.
df['DateColumn'] = df['DateColumn'].astype(int)
df['DateColumn'] = df['DateColumn'].astype(str)
df['DateColumn'] = df['DateColumn'].apply(lambda x: x.zfill(8))
df.loc[df['DateColumn'] == '00000000','DateColumn'] = '01011980'
df['DateColumn'] = pd.to_datetime(df['DateColumn'], format="%m%d%Y")
df['DateColumn'] = df['DateColumn'].apply(lambda x: x.strftime('%m/%d/%Y'))
If you use auto-layout.
button.titleLabel?.adjustsFontSizeToFitWidth = true
button.titleLabel?.numberOfLines = 2
According to the doc you can ignore selected fields or all uknown fields:
// to prevent specified fields from being serialized or deserialized
// (i.e. not include in JSON output; or being set even if they were included)
@JsonIgnoreProperties({ "internalId", "secretKey" })
// To ignore any unknown properties in JSON input without exception:
@JsonIgnoreProperties(ignoreUnknown=true)
You can also do it this way to reference the previous branch implicitly:
git checkout mainline
git pull
git merge -
git push
From docs,
There is no limit to the number of objects that can be stored in a bucket and no difference in performance whether you use many buckets or just a few. You can store all of your objects in a single bucket, or you can organize them across several buckets.
as of Aug 2016
vec1[i] = vec2[i]
will set the value of vec1[i]
to the value of vec2[i]
. Nothing is inserted. Your second approach is almost correct. Instead of +i+1
you need just +i
v1.insert(v1.begin()+i, v2[i])
Use OLEDB Connection to communicate with excel files. it gives better result
using System.Data.OleDb;
string physicalPath = "Your Excel file physical path";
OleDbCommand cmd = new OleDbCommand();
OleDbDataAdapter da = new OleDbDataAdapter();
DataSet ds = new DataSet();
String strNewPath = physicalPath;
String connString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + strNewPath + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\"";
String query = "SELECT * FROM [Sheet1$]"; // You can use any different queries to get the data from the excel sheet
OleDbConnection conn = new OleDbConnection(connString);
if (conn.State == ConnectionState.Closed) conn.Open();
try
{
cmd = new OleDbCommand(query, conn);
da = new OleDbDataAdapter(cmd);
da.Fill(ds);
}
catch
{
// Exception Msg
}
finally
{
da.Dispose();
conn.Close();
}
The Output data will be stored in dataset, using the dataset object you can easily access the datas. Hope this may helpful
For just a few items, the difference is small. If you have many items you should definitely use a switch.
If a switch contains more than five items, it's implemented using a lookup table or a hash list. This means that all items get the same access time, compared to a list of if:s where the last item takes much more time to reach as it has to evaluate every previous condition first.
Example:
import React from 'react';
import PropTypes from 'prop-types';
class MenuItem extends React.Component {
render() {
return (
<li>
<a href={this.props.href}>{this.props.children}</a>
</li>
);
}
}
MenuItem.defaultProps = {
href: "/",
children: "Main page"
};
MenuItem.propTypes = {
href: PropTypes.string.isRequired,
children: PropTypes.string.isRequired
};
export default MenuItem;
Picture: Shows you error in console if the expected type is different
i've had this problem in tell i recive an email from google telling me that someone try to login to your account is it you and i answer yes then it start workin so if this is the case for you look in your email and allow the server
Enter the following code in the opened settings file
{
"editor.formatOnSave": true
}
Save file
Here is a robust function for using UTL_File.putline that includes the necessary error handling. It also handles headers, footers and a few other exceptional cases.
PROCEDURE usp_OUTPUT_ToFileAscii(p_Path IN VARCHAR2, p_FileName IN VARCHAR2, p_Input IN refCursor, p_Header in VARCHAR2, p_Footer IN VARCHAR2, p_WriteMode VARCHAR2) IS
vLine VARCHAR2(30000);
vFile UTL_FILE.file_type;
vExists boolean;
vLength number;
vBlockSize number;
BEGIN
UTL_FILE.fgetattr(p_path, p_FileName, vExists, vLength, vBlockSize);
FETCH p_Input INTO vLine;
IF p_input%ROWCOUNT > 0
THEN
IF vExists THEN
vFile := UTL_FILE.FOPEN_NCHAR(p_Path, p_FileName, p_WriteMode);
ELSE
--even if the append flag is passed if the file doesn't exist open it with W.
vFile := UTL_FILE.FOPEN(p_Path, p_FileName, 'W');
END IF;
--GET HANDLE TO FILE
IF p_Header IS NOT NULL THEN
UTL_FILE.PUT_LINE(vFile, p_Header);
END IF;
UTL_FILE.PUT_LINE(vFile, vLine);
DBMS_OUTPUT.PUT_LINE('Record count > 0');
--LOOP THROUGH CURSOR VAR
LOOP
FETCH p_Input INTO vLine;
EXIT WHEN p_Input%NOTFOUND;
UTL_FILE.PUT_LINE(vFile, vLine);
END LOOP;
IF p_Footer IS NOT NULL THEN
UTL_FILE.PUT_LINE(vFile, p_Footer);
END IF;
CLOSE p_Input;
UTL_FILE.FCLOSE(vFile);
ELSE
DBMS_OUTPUT.PUT_LINE('Record count = 0');
END IF;
EXCEPTION
WHEN UTL_FILE.INVALID_PATH THEN
DBMS_OUTPUT.PUT_LINE ('invalid_path');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN UTL_FILE.INVALID_MODE THEN
DBMS_OUTPUT.PUT_LINE ('invalid_mode');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN UTL_FILE.INVALID_FILEHANDLE THEN
DBMS_OUTPUT.PUT_LINE ('invalid_filehandle');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN UTL_FILE.INVALID_OPERATION THEN
DBMS_OUTPUT.PUT_LINE ('invalid_operation');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN UTL_FILE.READ_ERROR THEN
DBMS_OUTPUT.PUT_LINE ('read_error');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN UTL_FILE.WRITE_ERROR THEN
DBMS_OUTPUT.PUT_LINE ('write_error');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN UTL_FILE.INTERNAL_ERROR THEN
DBMS_OUTPUT.PUT_LINE ('internal_error');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE ('other write error');
DBMS_OUTPUT.PUT_LINE(SQLERRM);
RAISE;
END;
Quoting directly from the help page for factor
:
To transform a factor f to its original numeric values, as.numeric(levels(f))[f]
is recommended and slightly more efficient than as.numeric(as.character(f))
.
The short version is that you cannot use variable-width patterns in lookbehinds using Python's re
module. There is no way to change this:
>>> import re
>>> re.sub("(?<=foo)bar(?=baz)", "quux", "foobarbaz")
'fooquuxbaz'
>>> re.sub("(?<=fo+)bar(?=baz)", "quux", "foobarbaz")
Traceback (most recent call last):
File "<pyshell#2>", line 1, in <module>
re.sub("(?<=fo+)bar(?=baz)", "quux", string)
File "C:\Development\Python25\lib\re.py", line 150, in sub
return _compile(pattern, 0).sub(repl, string, count)
File "C:\Development\Python25\lib\re.py", line 241, in _compile
raise error, v # invalid expression
error: look-behind requires fixed-width pattern
This means that you'll need to work around it, the simplest solution being very similar to what you're doing now:
>>> re.sub("(fo+)bar(?=baz)", "\\1quux", "foobarbaz")
'fooquuxbaz'
>>>
>>> # If you need to turn this into a callable function:
>>> def replace(start, replace, end, replacement, search):
return re.sub("(" + re.escape(start) + ")" + re.escape(replace) + "(?=" + re.escape + ")", "\\1" + re.escape(replacement), search)
This doesn't have the elegance of the lookbehind solution, but it's still a very clear, straightforward one-liner. And if you look at what an expert has to say on the matter (he's talking about JavaScript, which lacks lookbehinds entirely, but many of the principles are the same), you'll see that his simplest solution looks a lot like this one.
Look into this one ... call from anywhere you want.
public String setdoubleQuote(String myText) {
String quoteText = "";
if (!myText.isEmpty()) {
quoteText = "\"" + myText + "\"";
}
return quoteText;
}
apply double quotes to non empty dynamic string. Hope this is helpful.
You can quickly get to blur effect by doing the following.
// Add this to build.gradle app //
Compile ' com.github.jgabrielfreitas:BlurImageView:1.0.1 '
// Add to XML
<com.jgbrielfreitas.core.BlurImageView
android:id="@+id/iv_blur_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
//Add this to java
Import com.jgabrielfreitas.core.BlueImageView;
// Under public class *activity name * //
BlurImageView myBlurImage;
// Under Oncreate//
myBlurImage = (ImageView) findViewById(R.id.iv_blur_image)
MyBlurImage.setBlue(5)
I hope that helps someone
The recent openssh version deprecated DSA keys by default. You should suggest to your GIT provider to add some reasonable host key. Relying only on DSA is not a good idea.
As a workaround, you need to tell your ssh
client that you want to accept DSA host keys, as described in the official documentation for legacy usage. You have few possibilities, but I recommend to add these lines into your ~/.ssh/config
file:
Host your-remote-host
HostkeyAlgorithms +ssh-dss
Other possibility is to use environment variable GIT_SSH
to specify these options:
GIT_SSH_COMMAND="ssh -oHostKeyAlgorithms=+ssh-dss" git clone ssh://user@host/path-to-repository
Different implementations of the Python DB-API are allowed to use different placeholders, so you'll need to find out which one you're using -- it could be (e.g. with MySQLdb):
cursor.execute("INSERT INTO table VALUES (%s, %s, %s)", (var1, var2, var3))
or (e.g. with sqlite3 from the Python standard library):
cursor.execute("INSERT INTO table VALUES (?, ?, ?)", (var1, var2, var3))
or others yet (after VALUES
you could have (:1, :2, :3)
, or "named styles" (:fee, :fie, :fo)
or (%(fee)s, %(fie)s, %(fo)s)
where you pass a dict instead of a map as the second argument to execute
). Check the paramstyle
string constant in the DB API module you're using, and look for paramstyle at http://www.python.org/dev/peps/pep-0249/ to see what all the parameter-passing styles are!
Firstly I must say that it's much much simpler if you put your headers in separate files - this is the convention in big data.
Anyway Daniel's answer is pretty good, but it has an inefficiency and a bug, so I'm going to post my own. The inefficiency is that you don't need to check every record to see if it's the header, you just need to check the first record for each partition. The bug is that by using .split(",")
you could get an exception thrown or get the wrong column when entries are the empty string and occur at the start or end of the record - to correct that you need to use .split(",", -1)
. So here is the full code:
val header =
scala.io.Source.fromInputStream(
hadoop.fs.FileSystem.get(new java.net.URI(filename), sc.hadoopConfiguration)
.open(new hadoop.fs.Path(path)))
.getLines.head
val columnIndex = header.split(",").indexOf(columnName)
sc.textFile(path).mapPartitions(iterator => {
val head = iterator.next()
if (head == header) iterator else Iterator(head) ++ iterator
})
.map(_.split(",", -1)(columnIndex))
Final points, consider Parquet if you want to only fish out certain columns. Or at least consider implementing a lazily evaluated split function if you have wide rows.
TL;DR
Java caches boxed Integer instances from -128
to 127
. Since you are using ==
to compare objects references instead of values, only cached objects will match. Either work with long
unboxed primitive values or use .equals()
to compare your Long
objects.
Long (pun intended) version
Why there is problem in comparing Long variable with value greater than 127? If the data type of above variable is primitive (long) then code work for all values.
Java caches Integer objects instances from the range -128 to 127. That said:
127
(cached), the same object instance will be pointed by all references. (N variables, 1 instance)128
(not cached), you will have an object instance pointed by every reference. (N variables, N instances)That's why this:
Long val1 = 127L;
Long val2 = 127L;
System.out.println(val1 == val2);
Long val3 = 128L;
Long val4 = 128L;
System.out.println(val3 == val4);
Outputs this:
true
false
For the 127L value, since both references (val1 and val2) point to the same object instance in memory (cached), it returns true
.
On the other hand, for the 128 value, since there is no instance for it cached in memory, a new one is created for any new assignments for boxed values, resulting in two different instances (pointed by val3 and val4) and returning false
on the comparison between them.
That happens solely because you are comparing two Long
object references, not long
primitive values, with the ==
operator. If it wasn't for this Cache mechanism, these comparisons would always fail, so the real problem here is comparing boxed values with ==
operator.
Changing these variables to primitive long
types will prevent this from happening, but in case you need to keep your code using Long
objects, you can safely make these comparisons with the following approaches:
System.out.println(val3.equals(val4)); // true
System.out.println(val3.longValue() == val4.longValue()); // true
System.out.println((long)val3 == (long)val4); // true
(Proper null checking is necessary, even for castings)
IMO, it's always a good idea to stick with .equals() methods when dealing with Object comparisons.
Reference links:
If you are dealing with a web service call using the Axis framework, there is a much simpler answer. If all want is for your client to be able to call the SSL web service and ignore SSL certificate errors, just put this statement before you invoke any web services:
System.setProperty("axis.socketSecureFactory",
"org.apache.axis.components.net.SunFakeTrustSocketFactory");
The usual disclaimers about this being a Very Bad Thing to do in a production environment apply.
I found this at the Axis wiki.
I would say to err on the high side. Since you'll probably be using varchar, any extra space you allow won't actually use up any extra space unless somebody needs it. I would say for names (first or last), go at least 50 chars, and for email address, make it at least 128. There are some really long email addresses out there.
Another thing I like to do is go to Lipsum.com and ask it to generate some text. That way you can get a good idea of just what 100 bytes looks like.
I applied componentDidUpdate to table to have all columns same height. it works same as on $(window).load() in jquery.
eg:
componentDidUpdate: function() {
$(".tbl-tr").height($(".tbl-tr ").height());
}
I don't exactly understand what's the problem. Incomplete type is not the type that's "missing". Incompete type is a type that is declared but not defined (in case of struct types). To find the non-defining declaration is easy. As for the finding the missing definition... the compiler won't help you here, since that is what caused the error in the first place.
A major reason for incomplete type errors in C are typos in type names, which prevent the compiler from matching one name to the other (like in matching the declaration to the definition). But again, the compiler cannot help you here. Compiler don't make guesses about typos.
I found a way to view it in PHP. After doing some more snooping I found 2 solutions for offline and online viewing of .md files:
I recommend the offline version so you can do your editing even while you're doing your business on the throne. :)
Did you try passwd -d root
? Most likely, this will do what you want.
You can also manually edit /etc/shadow
: (Create a backup copy. Be sure that you can log even if you mess up, for example from a rescue system.) Search for "root". Typically, the root entry looks similar to
root:$X$SK5xfLB1ZW:0:0...
There, delete the second field (everything between the first and second colon):
root::0:0...
Some systems will make you put an asterisk (*) in the password field instead of blank, where a blank field would allow no password (CentOS 8 for example)
root:*:0:0...
Save the file, and try logging in as root. It should skip the password prompt. (Like passwd -d
, this is a "no password" solution. If you are really looking for a "blank password", that is "ask for a password, but accept if the user just presses Enter", look at the manpage of mkpasswd
, and use mkpasswd
to create the second field for the /etc/shadow.)
Actually in case if you have any file that has key value pairs like this:
someKey=someValue
someOtherKey=someOtherValue
You can import that into webpack by a npm module called properties-reader
I found this really helpful since I'm integrating react with Java Spring framework where there is already an application.properties file. This helps me to keep all config together in one place.
"properties-reader": "0.0.16"
const PropertiesReader = require('properties-reader');
const appProperties = PropertiesReader('Path/to/your/properties.file')._properties;
externals: {
'Config': JSON.stringify(appProperties)
}
var Config = require('Config')
fetchData(Config.serverUrl + '/Enterprises/...')
Using jQuery it is very simple assuming the URL you wish to post to is on the same server or has implemented CORS
$(function() {
$("#employeeLink").on("click",function(e) {
e.preventDefault(); // cancel the link itself
$.post(this.href,function(data) {
$("#someContainer").html(data);
});
});
});
If you insist on using frames which I strongly discourage, have a form and submit it with the link
<form action="employee.action" method="post" target="myFrame" id="myForm"></form>
and use (in plain JS)
window.addEventListener("load",function() {
document.getElementById("employeeLink").addEventListener("click",function(e) {
e.preventDefault(); // cancel the link
document.getElementById("myForm").submit(); // but make sure nothing has name or ID="submit"
});
});
Without a form we need to make one
window.addEventListener("load",function() {
document.getElementById("employeeLink").addEventListener("click",function(e) {
e.preventDefault(); // cancel the actual link
var myForm = document.createElement("form");
myForm.action=this.href;// the href of the link
myForm.target="myFrame";
myForm.method="POST";
myForm.submit();
});
});
CREATE TEMPORARY TABLE IF NOT EXISTS table2 AS (SELECT * FROM table1)
From the manual found at http://dev.mysql.com/doc/refman/5.7/en/create-table.html
You can use the TEMPORARY keyword when creating a table. A TEMPORARY table is visible only to the current session, and is dropped automatically when the session is closed. This means that two different sessions can use the same temporary table name without conflicting with each other or with an existing non-TEMPORARY table of the same name. (The existing table is hidden until the temporary table is dropped.) To create temporary tables, you must have the CREATE TEMPORARY TABLES privilege.
This will loop through only once.
Item biggest = items.Aggregate((i1,i2) => i1.ID > i2.ID ? i1 : i2);
Thanks Nick - Here's the proof
class Program
{
static void Main(string[] args)
{
IEnumerable<Item> items1 = new List<Item>()
{
new Item(){ ClientID = 1, ID = 1},
new Item(){ ClientID = 2, ID = 2},
new Item(){ ClientID = 3, ID = 3},
new Item(){ ClientID = 4, ID = 4},
};
Item biggest1 = items1.Aggregate((i1, i2) => i1.ID > i2.ID ? i1 : i2);
Console.WriteLine(biggest1.ID);
Console.ReadKey();
}
}
public class Item
{
public int ClientID { get; set; }
public int ID { get; set; }
}
Rearrange the list and get the same result
MySQL lacks support for FULL OUTER JOIN.
So if you want to emulate a Full join on MySQL take a look here .
A commonly suggested workaround looks like this:
SELECT t_13.value AS val13, t_17.value AS val17
FROM t_13
LEFT JOIN
t_17
ON t_13.value = t_17.value
UNION ALL
SELECT t_13.value AS val13, t_17.value AS val17
FROM t_13
RIGHT JOIN
t_17
ON t_13.value = t_17.value
WHERE t_13.value IS NULL
ORDER BY
COALESCE(val13, val17)
LIMIT 30
This works for me:
$('#element').click(function (e) {
if (e.offsetX > e.target.offsetLeft) {
// click on element
}
else{
// click on ::before element
}
});
Or, you may exclude the options in quotes:
FOR /F %%i IN (myfile.txt) DO ECHO %%i
Under the Links Tab ==> Edit the URL Item ==> Under the URL (Type the Web address)- format the value as follows:
Example: if the URL = http://www.abc.com ==> then suffix the value with ==>
SO, the final value should read as ==> http://www.abc.com#openinnewwindow/,'" target="http://www.abc.com'
DONE ==> this will open the URL in New Window
A spent a lot of time on this issue and finally found that selenium 2.44 not working with node version 0.12. Use node version 0.10.38.
SIMPLE ANSWER:
onclick="functionName(ID.value);
Where ID is the ID of the input field.
Fixing must override a super class method error is not difficult, You just need to change Java source version to 1.6 because from Java 1.6 @Override annotation can be used along with interface method. In order to change source version to 1.6 follow below steps :
This piece of code helps.
Bitmap icon = BitmapFactory.decodeResource(context.getResources(),
R.drawable.icon_resource);
Here a version where the image gets downloaded.
String name = c.getString(str_url);
URL url_value = new URL(name);
ImageView profile = (ImageView)v.findViewById(R.id.vdo_icon);
if (profile != null) {
Bitmap mIcon1 =
BitmapFactory.decodeStream(url_value.openConnection().getInputStream());
profile.setImageBitmap(mIcon1);
}
pyspellchecker
is the one of the best solutions for this problem. pyspellchecker
library is based on Peter Norvig’s blog post.
It uses a Levenshtein Distance algorithm to find permutations within an edit distance of 2 from the original word.
There are two ways to install this library. The official document highly recommends using the pipev package.
pip
pip install pyspellchecker
git clone https://github.com/barrust/pyspellchecker.git
cd pyspellchecker
python setup.py install
the following code is the example provided from the documentation
from spellchecker import SpellChecker
spell = SpellChecker()
# find those words that may be misspelled
misspelled = spell.unknown(['something', 'is', 'hapenning', 'here'])
for word in misspelled:
# Get the one `most likely` answer
print(spell.correction(word))
# Get a list of `likely` options
print(spell.candidates(word))
16kb is about right; if you're using gigabit ethernet, each packet could be 9kb in size.
I couldn't respond to Mark above, but I just made one modification which fixed the error which was caused if data in the cells was not unicode, i.e. float or int data. I replaced this line into the UnicodeWriter function: "self.writer.writerow([s.encode("utf-8") if type(s)==types.UnicodeType else s for s in row])" so that it became:
class UnicodeWriter:
def __init__(self, f, dialect=csv.excel, encoding="utf-8-sig", **kwds):
self.queue = cStringIO.StringIO()
self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
self.stream = f
self.encoder = codecs.getincrementalencoder(encoding)()
def writerow(self, row):
'''writerow(unicode) -> None
This function takes a Unicode string and encodes it to the output.
'''
self.writer.writerow([s.encode("utf-8") if type(s)==types.UnicodeType else s for s in row])
data = self.queue.getvalue()
data = data.decode("utf-8")
data = self.encoder.encode(data)
self.stream.write(data)
self.queue.truncate(0)
def writerows(self, rows):
for row in rows:
self.writerow(row)
You will also need to "import types".
Include the following into build.gradle:
android.libraryVariants.all { variant ->
task("generate${variant.name}Javadoc", type: Javadoc) {
description "Generates Javadoc for $variant.name."
source = variant.javaCompile.source
ext.androidJar = "${android.plugin.sdkDirectory}/platforms/${android.compileSdkVersion}/android.jar"
classpath = files(variant.javaCompile.classpath.files) + files(ext.androidJar)
}
task("javadoc${variant.name}", type: Jar) {
classifier = "javadoc"
description "Bundles Javadoc into a JAR file for $variant.name."
from tasks["generate${variant.name}Javadoc"]
}
task("jar${variant.name}", type: Jar) {
description "Bundles compiled .class files into a JAR file for $variant.name."
dependsOn variant.javaCompile
from variant.javaCompile.destinationDir
exclude '**/R.class', '**/R$*.class', '**/R.html', '**/R.*.html'
}
}
You can then execute gradle with: ./gradlew clean javadocRelease jarRelease
which will build you your Jar and also a javadoc jar into the build/libs/
folder.
EDIT: With android gradle tools 1.10.+ getting the android SDK dir is different than before. You have to change the following (thanks Vishal!):
android.sdkDirectory
instead of
android.plugin.sdkDirectory
EDIT: the following is wrong, because Cell("width") returns the width of the last modified cell.
Cell("width")
returns the width of the current cell, so you don't need a reference to the current cell. If you need one, though, cell("address")
returns the address of the current cell, so if you need a reference to the current cell, use indirect(cell("address"))
. See the documentation: http://www.techonthenet.com/excel/formulas/cell.php
You can try this:
string timeexample= string.Format("{0:hh:mm:ss tt}", DateTime.Now);
you can remove hh or mm or ss or tt according your need where hh is hour in 12 hr formate, mm is minutes,ss is seconds,and tt is AM/PM.
Maybe your changes are not lost. Check "git reflog"
I quote the article below:
"Basically every action you perform inside of Git where data is stored, you can find it inside of the reflog. Git tries really hard not to lose your data, so if for some reason you think it has, chances are you can dig it out using git reflog"
See details:
http://gitready.com/intermediate/2009/02/09/reflog-your-safety-net.html
Pandas timestamp differences returns a datetime.timedelta object. This can easily be converted into hours by using the *as_type* method, like so
import pandas
df = pandas.DataFrame(columns=['to','fr','ans'])
df.to = [pandas.Timestamp('2014-01-24 13:03:12.050000'), pandas.Timestamp('2014-01-27 11:57:18.240000'), pandas.Timestamp('2014-01-23 10:07:47.660000')]
df.fr = [pandas.Timestamp('2014-01-26 23:41:21.870000'), pandas.Timestamp('2014-01-27 15:38:22.540000'), pandas.Timestamp('2014-01-23 18:50:41.420000')]
(df.fr-df.to).astype('timedelta64[h]')
to yield,
0 58
1 3
2 8
dtype: float64
Usinge the file
argument in the print
function, you can have different files per print:
print('Redirect output to file', file=open('/tmp/example.log', 'w'))
You are using Python 2 for which the input()
function tries to evaluate the expression entered. Because you enter a string, Python treats it as a name and tries to evaluate it. If there is no variable defined with that name you will get a NameError
exception.
To fix the problem, in Python 2, you can use raw_input()
. This returns the string entered by the user and does not attempt to evaluate it.
Note that if you were using Python 3, input()
behaves the same as raw_input()
does in Python 2.
jQuery
$('head').append( ... );
JavaScript:
document.getElementsByTagName('head')[0].appendChild( ... );
This question showed up when I was searching for a fast way to use git builtin way to locate differences. My solution criteria:
I found this answer to get color in git.
To get side by side diff instead of line diff I tweaked mb14's excellent answer on this question with the following parameters:
$ git diff --word-diff-regex="[A-Za-z0-9. ]|[^[:space:]]"
If you do not like the extra [- or {+ the option --word-diff=color
can be used.
$ git diff --word-diff-regex="[A-Za-z0-9. ]|[^[:space:]]" --word-diff=color
That helped to get proper comparison with both json and xml text and java code.
In summary the --word-diff-regex
options has a helpful visibility together with color settings to get a colorized side by side source code experience compared to the standard line diff, when browsing through big files with small line changes.
extern "C"
doesn't really change the way that the compiler reads the code. If your code is in a .c file, it will be compiled as C, if it is in a .cpp file, it will be compiled as C++ (unless you do something strange to your configuration).
What extern "C"
does is affect linkage. C++ functions, when compiled, have their names mangled -- this is what makes overloading possible. The function name gets modified based on the types and number of parameters, so that two functions with the same name will have different symbol names.
Code inside an extern "C"
is still C++ code. There are limitations on what you can do in an extern "C" block, but they're all about linkage. You can't define any new symbols that can't be built with C linkage. That means no classes or templates, for example.
extern "C"
blocks nest nicely. There's also extern "C++"
if you find yourself hopelessly trapped inside of extern "C"
regions, but it isn't such a good idea from a cleanliness perspective.
Now, specifically regarding your numbered questions:
Regarding #1: __cplusplus will stay defined inside of extern "C"
blocks. This doesn't matter, though, since the blocks should nest neatly.
Regarding #2: __cplusplus will be defined for any compilation unit that is being run through the C++ compiler. Generally, that means .cpp files and any files being included by that .cpp file. The same .h (or .hh or .hpp or what-have-you) could be interpreted as C or C++ at different times, if different compilation units include them. If you want the prototypes in the .h file to refer to C symbol names, then they must have extern "C"
when being interpreted as C++, and they should not have extern "C"
when being interpreted as C -- hence the #ifdef __cplusplus
checking.
To answer your question #3: functions without prototypes will have C++ linkage if they are in .cpp files and not inside of an extern "C"
block. This is fine, though, because if it has no prototype, it can only be called by other functions in the same file, and then you don't generally care what the linkage looks like, because you aren't planning on having that function be called by anything outside the same compilation unit anyway.
For #4, you've got it exactly. If you are including a header for code that has C linkage (such as code that was compiled by a C compiler), then you must extern "C"
the header -- that way you will be able to link with the library. (Otherwise, your linker would be looking for functions with names like _Z1hic
when you were looking for void h(int, char)
5: This sort of mixing is a common reason to use extern "C"
, and I don't see anything wrong with doing it this way -- just make sure you understand what you are doing.
Generally, you can use the func(*tuple)
syntax. You can even pass a part of the tuple, which seems like what you're trying to do here:
t = (2010, 10, 2, 11, 4, 0, 2, 41, 0)
dt = datetime.datetime(*t[0:7])
This is called unpacking a tuple, and can be used for other iterables (such as lists) too. Here's another example (from the Python tutorial):
>>> range(3, 6) # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>>> range(*args) # call with arguments unpacked from a list
[3, 4, 5]
SELECT [ReportId],
SUBSTRING(d.EmailList,1, LEN(d.EmailList) - 1) EmailList
FROM
(
SELECT DISTINCT [ReportId]
FROM Table1
) a
CROSS APPLY
(
SELECT [Email] + ', '
FROM Table1 AS B
WHERE A.[ReportId] = B.[ReportId]
FOR XML PATH('')
) D (EmailList)
f = open("Path/To/Your/File.txt", "w") # 'r' for reading and 'w' for writing
f.write("Hello World from " + f.name) # Write inside file
f.close() # Close file
# Method 2shush
with open("Path/To/Your/File.txt", "w") as f: # Opens file and casts as f
f.write("Hello World form " + f.name) # Writing
# File closed automatically
Let me throw out some example code that I got from http://www3.ntu.edu.sg/home/ehchua/programming/java/DateTimeCalendar.html Then you can play around with different options until you understand it.
import java.text.SimpleDateFormat;
import java.util.Date;
public class DateTest {
public static void main(String[] args) {
Date now = new Date();
//This is just Date's toString method and doesn't involve SimpleDateFormat
System.out.println("toString(): " + now); // dow mon dd hh:mm:ss zzz yyyy
//Shows "Mon Oct 08 08:17:06 EDT 2012"
SimpleDateFormat dateFormatter = new SimpleDateFormat("E, y-M-d 'at' h:m:s a z");
System.out.println("Format 1: " + dateFormatter.format(now));
// Shows "Mon, 2012-10-8 at 8:17:6 AM EDT"
dateFormatter = new SimpleDateFormat("E yyyy.MM.dd 'at' hh:mm:ss a zzz");
System.out.println("Format 2: " + dateFormatter.format(now));
// Shows "Mon 2012.10.08 at 08:17:06 AM EDT"
dateFormatter = new SimpleDateFormat("EEEE, MMMM d, yyyy");
System.out.println("Format 3: " + dateFormatter.format(now));
// Shows "Monday, October 8, 2012"
// SimpleDateFormat can be used to control the date/time display format:
// E (day of week): 3E or fewer (in text xxx), >3E (in full text)
// M (month): M (in number), MM (in number with leading zero)
// 3M: (in text xxx), >3M: (in full text full)
// h (hour): h, hh (with leading zero)
// m (minute)
// s (second)
// a (AM/PM)
// H (hour in 0 to 23)
// z (time zone)
// (there may be more listed under the API - I didn't check)
}
}
Good luck!
Languages like scala&python give to you very powerful stuff like patternMatching, unfortunately this is still a missing-feature in Java...
but there is a solution (which I don't like in most of the cases), you can do something like this:
final int s1Value = 0;
final int s2Value = 0;
final String s1 = "a";
final String s2 = "g";
switch (s1 + s2 + s1Value + s2Value){
case "ag00": return true;
default: return false;
}
The problem is that it triggers the form submission. If you make the getData
function return false
then it should stop the form from submitting.
Alternatively, you could also use the preventDefault
method of the event object:
function getData(e) {
e.preventDefault();
}
Thanks to @nekno and @ale84 for great answers.
However, I modified @ale84's script it little to increment build numbers for floating point.
the value of incl can be changed according to your floating format requirements. For eg: if incl = .01, output format would be ... 1.19, 1.20, 1.21 ...
buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$INFOPLIST_FILE")
incl=.01
buildNumber=`echo $buildNumber + $incl|bc`
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $buildNumber" "$INFOPLIST_FILE"
From the Java docs, this is an intentional feature when specifying a seed value for the Random class.
If two instances of Random are created with the same seed, and the same sequence of method calls is made for each, they will generate and return identical sequences of numbers. In order to guarantee this property, particular algorithms are specified for the class Random. Java implementations must use all the algorithms shown here for the class Random, for the sake of absolute portability of Java code.
http://docs.oracle.com/javase/1.4.2/docs/api/java/util/Random.html
Odd though, you would think there are implicit security issues in having predictable 'random' numbers.
you can make custom style for switch widget that use color accent as a default when do custom style for it
<style name="switchStyle" parent="Theme.AppCompat.Light">
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorPrimary</item> <!-- set your color -->
</style>
#include"stdio.h"//rmv coding for randam number access
#include"conio.h"
#include"time.h"
void main()
{
time_t t;
int rmvivek;
srand(time(&t));
rmvivek=1;
while(rmvivek<=5)
{
printf("%c\t",rand()%10);
rmvivek++;
}
getch();
}
Try ctrl+F5, it will hold your Screen until you press any key. Regards
Try checking his post. It shows how to implement transitions between web pages using AngularJS's ngRoute and ngAnimate: How to Make iPhone-Style Web Page Transitions Using AngularJS & CSS
Using python-docx, as @Chinmoy Panda 's answer shows:
for para in doc.paragraphs:
fullText.append(para.text)
However, para.text
will lost the text in w:smarttag
(Corresponding github issue is here: https://github.com/python-openxml/python-docx/issues/328), you should use the following function instead:
def para2text(p):
rs = p._element.xpath('.//w:t')
return u" ".join([r.text for r in rs])
http://facebook.com/sharer.php is deprecated
You have a few options (use the iframe version):
http://developers.facebook.com/docs/reference/plugins/like/
http://developers.facebook.com/docs/reference/plugins/send/
https://developers.facebook.com/docs/reference/plugins/like-box/
Without more details as to what the question is exactly asking, I am going to answer the title of the question,
Create an Array
:
String[] myArray = new String[2];
int[] intArray = new int[2];
// or can be declared as follows
String[] myArray = {"this", "is", "my", "array"};
int[] intArray = {1,2,3,4};
Create an ArrayList
:
ArrayList<String> myList = new ArrayList<String>();
myList.add("Hello");
myList.add("World");
ArrayList<Integer> myNum = new ArrayList<Integer>();
myNum.add(1);
myNum.add(2);
This means, create an ArrayList
of String
and Integer
objects. You cannot use int
because thats a primitive data types, see the link for a list of primitive data types.
Create a Stack
:
Stack myStack = new Stack();
// add any type of elements (String, int, etc..)
myStack.push("Hello");
myStack.push(1);
Create an Queue
: (using LinkedList)
Queue<String> myQueue = new LinkedList<String>();
Queue<Integer> myNumbers = new LinkedList<Integer>();
myQueue.add("Hello");
myQueue.add("World");
myNumbers.add(1);
myNumbers.add(2);
Same thing as an ArrayList
, this declaration means create an Queue
of String
and Integer
objects.
In response to your comment from the other given answer,
i am pretty confused now, why are using string. and what does
<String>
means
We are using String
only as a pure example, but you can add any other object, but the main point is that you use an object not a primitive type. Each primitive data type has their own primitive wrapper class, see link for list of primitive data type's wrapper class.
I have posted some links to explain the difference between the two, but here are a list of primitive types
byte
short
char
int
long
boolean
double
float
Which means, you are not allowed to make an ArrayList
of integer's like so:
ArrayList<int> numbers = new ArrayList<int>();
^ should be an object, int is not an object, but Integer is!
ArrayList<Integer> numbers = new ArrayList<Integer>();
^ perfectly valid
Also, you can use your own objects, here is my Monster
object I created,
public class Monster {
String name = null;
String location = null;
int age = 0;
public Monster(String name, String loc, int age) {
this.name = name;
this.loc = location;
this.age = age;
}
public void printDetails() {
System.out.println(name + " is from " + location +
" and is " + age + " old.");
}
}
Here we have a Monster
object, but now in our Main.java
class we want to keep a record of all our Monster
's that we create, so let's add them to an ArrayList
public class Main {
ArrayList<Monster> myMonsters = new ArrayList<Monster>();
public Main() {
Monster yetti = new Monster("Yetti", "The Mountains", 77);
Monster lochness = new Monster("Lochness Monster", "Scotland", 20);
myMonsters.add(yetti); // <-- added Yetti to our list
myMonsters.add(lochness); // <--added Lochness to our list
for (Monster m : myMonsters) {
m.printDetails();
}
}
public static void main(String[] args) {
new Main();
}
}
(I helped my girlfriend's brother with a Java game, and he had to do something along those lines as well, but I hope the example was well demonstrated)
I like how gitk
can show you exactly what was untracked or sitting in the index, but by default it will show those stash "commits" in the middle of all your other commits on the current branch.
The trick is to run gitk as follows:
gitk "stash@{0}^!"
(The quoting is there to make it work in Powershell but this way it should still work in other shells as well.)
If you look up this syntax in the gitrevisions help page you'll find the following:
The
r1^!
notation includes commit r1 but excludes all of its parents. By itself, this notation denotes the single commit r1.
This will apparently put gitk in such a mode that only the immediate parents of the selected commit are shown, which is exactly what I like.
If you want to take this further and list all stashes then you can run this:
gitk `git stash list '--pretty=format:%gd^!'`
(Those single quotes inside the backticks are necessary to appease Bash, otherwise it complains about the exclamation mark)
If you are on Windows and using cmd or Powershell:
gitk "--argscmd=git stash list --pretty=format:%gd^!"
Sublime Text -> Preferences -> Setting:
Write your style in right screen:
I recommend using .htaccess
. You only need to add:
DirectoryIndex home.php
or whatever page name you want to have for it.
EDIT: basic htaccess tutorial.
1) Create .htaccess
file in the directory where you want to change the index file.
.
in front, to ensure it is a "hidden" fileEnter the line above in there. There will likely be many, many other things you will add to this (AddTypes for webfonts / media files, caching for headers, gzip declaration for compression, etc.), but that one line declares your new "home" page.
2) Set server to allow reading of .htaccess
files (may only be needed on your localhost, if your hosting servce defaults to allow it as most do)
Assuming you have access, go to your server's enabled site location. I run a Debian server for development, and the default site setup is at /etc/apache2/sites-available/default
for Debian / Ubuntu. Not sure what server you run, but just search for "sites-available" and go into the "default" document. In there you will see an entry for Directory. Modify it to look like this:
<Directory /var/www/>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all
</Directory>
Then restart your apache server. Again, not sure about your server, but the command on Debian / Ubuntu is:
sudo service apache2 restart
Technically you only need to reload, but I restart just because I feel safer with a full refresh like that.
Once that is done, your site should be reading from your .htaccess file, and you should have a new default home page! A side note, if you have a sub-directory that runs a site (like an admin section or something) and you want to have a different "home page" for that directory, you can just plop another .htaccess
file in that sub-site's root and it will overwrite the declaration in the parent.
but I can't initialize my derived class, I mean I did this Inheritance so I can add animals to my PetStore but now since sizeF is private how can I do that ?? so I'm thinking maybe in the PetStore default constructor I can call Farm()... so any Idea ???
Don't panic.
Farm constructor will be called in the constructor of PetStore, automatically.
See the base class inheritance calling rules: What are the rules for calling the superclass constructor?
A somewhat late answer, but with pandas, it is possible to get directly a column of an excel file:
import pandas
df = pandas.read_excel('sample.xls')
#print the column names
print df.columns
#get the values for a given column
values = df['Arm_id'].values
#get a data frame with selected columns
FORMAT = ['Arm_id', 'DSPName', 'Pincode']
df_selected = df[FORMAT]
Make sure you have installed xlrd and pandas:
pip install pandas xlrd
Many of the examples here will not work for 11, 12, 13. This is more generic and will work for all case.
switch (date) {
case 1:
case 21:
case 31:
return "" + date + "st";
case 2:
case 22:
return "" + date + "nd";
case 3:
case 23:
return "" + date + "rd";
default:
return "" + date + "th";
}
If you are creating an array then there is no difference, however, the following is neater:
String[] suit = {
"spades",
"hearts",
"diamonds",
"clubs"
};
But, if you want to pass an array into a method you have to call it like this:
myMethod(new String[] {"spades", "hearts"});
myMethod({"spades", "hearts"}); //won't compile!
I hope this will help reloading/refreshing directive on value from parent scope
<html>
<head>
<!-- version 1.4.5 -->
<script src="angular.js"></script>
</head>
<body ng-app="app" ng-controller="Ctrl">
<my-test reload-on="update"></my-test><br>
<button ng-click="update = update+1;">update {{update}}</button>
</body>
<script>
var app = angular.module('app', [])
app.controller('Ctrl', function($scope) {
$scope.update = 0;
});
app.directive('myTest', function() {
return {
restrict: 'AE',
scope: {
reloadOn: '='
},
controller: function($scope) {
$scope.$watch('reloadOn', function(newVal, oldVal) {
// all directive code here
console.log("Reloaded successfully......" + $scope.reloadOn);
});
},
template: '<span> {{reloadOn}} </span>'
}
});
</script>
</html>
This is quite simple.
Assuming the data is stored in a column called A in a table called T, you can use
select A, count(A) from T group by A
As RPM1984 refers to, this is mostly likely caused by the fact that your script is loading before jQuery is loaded.
You can do it by lodash _.head
so easily.
var arr = ['first', 'second', 'third', 'fourth', 'fifth'];_x000D_
console.log(_.head(arr));
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>
_x000D_
ifdef $(HAVE_CLIENT) libtest_LIBS = \ $(top_builddir)/libclient.la else ifdef $(HAVE_SERVER) libtest_LIBS = \ $(top_builddir)/libserver.la else libtest_LIBS = endif endif
NOTE: DO NOT indent the if then it don't work!
If you're OK with viewing it as XML:
DECLARE @xmltmp xml = (SELECT * FROM table FOR XML AUTO)
PRINT CONVERT(NVARCHAR(MAX), @xmltmp)
While the OP's question as asked doesn't necessarily require this, it's useful if you got here looking to print multiple rows/columns (within reason).
Another example : I use it to group Data by date. But some data don't have date. I can group it with the header "NoDate"
I am using
Request.Url.GetLeftPart(UriPartial.Authority) +
VirtualPathUtility.ToAbsolute("~/")
another solution using logging module:
import logging
import sys
log = logging.getLogger('stdxxx')
class StreamLogger(object):
def __init__(self, stream, prefix=''):
self.stream = stream
self.prefix = prefix
self.data = ''
def write(self, data):
self.stream.write(data)
self.stream.flush()
self.data += data
tmp = str(self.data)
if '\x0a' in tmp or '\x0d' in tmp:
tmp = tmp.rstrip('\x0a\x0d')
log.info('%s%s' % (self.prefix, tmp))
self.data = ''
logging.basicConfig(level=logging.INFO,
filename='text.log',
filemode='a')
sys.stdout = StreamLogger(sys.stdout, '[stdout] ')
print 'test for stdout'
You'd have to use WebSockets (or some similar protocol module e.g. as supported by the Flash plugin) because a normal browser application simply can't open a pure TCP socket.
The Socket.IO
module available for node.js
can help a lot, but note that it is not a pure WebSocket module in its own right.
It's actually a more generic communications module that can run on top of various other network protocols, including WebSockets, and Flash sockets.
Hence if you want to use Socket.IO
on the server end you must also use their client code and objects. You can't easily make raw WebSocket
connections to a socket.io
server as you'd have to emulate their message protocol.
OpenTK is an improvement over the Tao API, as it uses idiomatic C# style with overloading, strongly-typed enums, exceptions, and standard .NET types:
GL.Begin(BeginMode.Points);
GL.Color3(Color.Yellow);
GL.Vertex3(Vector3.Up);
as opposed to Tao which merely mirrors the C API:
Gl.glBegin(Gl.GL_POINTS); // double "gl" prefix
Gl.glColor3ub(255, 255, 0); // have to pass RGB values as separate args
Gl.glVertex3f(0, 1, 0); // explicit "f" qualifier
This makes for harder porting but is incredibly nice to use.
As a bonus it provides font rendering, texture loading, input handling, audio, math...
Update 18th January 2016: Today the OpenTK maintainer has stepped away from the project, leaving its future uncertain. The forums are filled with spam. The maintainer recommends moving to MonoGame or SDL2#.
Update 30th June 2020: OpenTK has had new maintainers for a while now and has an active discord community. So the previous recommendation of using another library isn't necessarily true.
Remove these two lines:
xmlHttp.setRequestHeader("Content-length", params.length);
xmlHttp.setRequestHeader("Connection", "close");
XMLHttpRequest isn't allowed to set these headers, they are being set automatically by the browser. The reason is that by manipulating these headers you might be able to trick the server into accepting a second request through the same connection, one that wouldn't go through the usual security checks - that would be a security vulnerability in the browser.
Try creating a symlink, make sure you have openssl installed in /usr/local/include
first.
ln -s /usr/local/Cellar/openssl/{version}/include/openssl /usr/local/include/openssl
More info at Openssl with El Capitan.
I hope this help:
<meta property="og:title" content="Title goes here">
<meta property="og:site_name" content="Site name">
<meta property="og:image" content="imageURLShouldBeFromSameDomainName">
<meta property="og:image:width" content="640">
<meta property="og:image:height" content="300">
Take note of the imgURL that should be hosted from same domain, or it will not show up on whatsapp. I tried loading a url from amazon, image preview is not working.
I hit this discussion while trying to figure out how to get a value from a nested map of unknown depth and it helped me come up with the following solution to my problem. It is overkill for the original question but maybe it will be helpful to someone that finds themselves in a situation where you have less knowledge about the map being searched.
private static Object pullNestedVal(
Map<Object, Object> vmap,
Object ... keys) {
if ((keys.length == 0) || (vmap.size() == 0)) {
return null;
} else if (keys.length == 1) {
return vmap.get(keys[0]);
}
Object stageObj = vmap.get(keys[0]);
if (stageObj instanceof Map) {
Map<Object, Object> smap = (Map<Object, Object>) stageObj;
Object[] skeys = Arrays.copyOfRange(keys, 1, keys.length);
return pullNestedVal(smap, skeys);
} else {
return null;
}
}
The splat and spread operators are part of ES6, the planned next version of Javascript. So far only Firefox supports them. This code works in FF16+:
var arr = ['quick', 'brown', 'lazy'];
var sprintf = function(str, ...args)
{
for (arg of args) {
str = str.replace(/%s/, arg);
}
return str;
}
sprintf.apply(null, ['The %s %s fox jumps over the %s dog.', ...arr]);
sprintf('The %s %s fox jumps over the %s dog.', 'slow', 'red', 'sleeping');
Note the awkard syntax for spread. The usual syntax of sprintf('The %s %s fox jumps over the %s dog.', ...arr);
is not yet supported. You can find an ES6 compatibility table here.
Note also the use of for...of
, another ES6 addition. Using for...in
for arrays is a bad idea.
The last 9 elements can be read from left to right using numlist[-9:], or from right to left using numlist[:-10:-1], as you want.
>>> a=range(17)
>>> print a
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]
>>> print a[-9:]
[8, 9, 10, 11, 12, 13, 14, 15, 16]
>>> print a[:-10:-1]
[16, 15, 14, 13, 12, 11, 10, 9, 8]
There is at least one middleware on npm for handling CORS in Express: cors.
In Java a class can implement an interface. See http://en.wikipedia.org/wiki/Interface_(Java) for more details. Not sure about PHP.
Hope this helps.
I have got same error for Android-28. In SDK manager - SDK Platform it shows me that Android API 28 is partially installed and no further updates available. so that I updated ANDROID-SDK-BUILD-TOOLS from SDK Tools and after restarting project. It will work. This might be helpful for other who faces same issue as I faced.
Have been fighting this all morning and now have it solved and why it happened. Posting with the hope it helps others
I installed the Krypton.Toolkit which added the tools to the Visual studio toolbox automatically. I then added the tools to the designer, which automatically added the dll to the projrect references, however the toolkit was marked as CopyLocal=false
I built an installer, using all dlls in the release build folder (of course the above dll wasn't there).
Setting copylocal=true, then rebuilding the installer, everything worked fine.
Best way to solve this until a fix is available (if a fix comes) is to force IE compatibility mode on the user.
Use <META http-equiv="X-UA-Compatible" content="IE=9">
ideally in the masterpage so all pages in your site get the workaround.
I case you are running SpringBoot:
I just had the same problem, that I could not Autowire one of my services from the static main method.
See below an approach in case you are relying on SpringApplication.run:
@SpringBootApplication
public class PricingOnlineApplication {
@Autowired
OrchestratorService orchestratorService;
public static void main(String[] args) {
ConfigurableApplicationContext context = SpringApplication.run(PricingOnlineApplication.class, args);
PricingOnlineApplication application = context.getBean(PricingOnlineApplication.class);
application.start();
}
private void start() {
orchestratorService.performPricingRequest(null);
}
}
I noticed that SpringApplication.run returns a context which can be used similar to the above described approaches. From there, it is exactly the same as above ;-)
If you have a view with no background this line will help you
android:outlineProvider="bounds"
If you have a view with background this line will help you
android:outlineProvider="paddedBounds"
To complement the other answers: if you want to reset all background properties to their initial value (which includes background-color: transparent
and background-image: none
) without explicitly specifying any value such as transparent
or none
, you can do so by writing:
background: initial;
private void textBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
button.PerformClick();
}
Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"JukeboxV2.0\JukeboxV2.0\Datos\ich will.mp3")
base directory + your filename
you can easily
The Python reference manual includes several string literals that can be used in a string. These special sequences of characters are replaced by the intended meaning of the escape sequence.
Here is a table of some of the more useful escape sequences and a description of the output from them.
Escape Sequence Meaning
\t Tab
\\ Inserts a back slash (\)
\' Inserts a single quote (')
\" Inserts a double quote (")
\n Inserts a ASCII Linefeed (a new line)
Basic Example
If i wanted to print some data points separated by a tab space I could print this string.
DataString = "0\t12\t24"
print (DataString)
Returns
0 12 24
Example for Lists
Here is another example where we are printing the items of list and we want to sperate the items by a TAB.
DataPoints = [0,12,24]
print (str(DataPoints[0]) + "\t" + str(DataPoints[1]) + "\t" + str(DataPoints[2]))
Returns
0 12 24
Raw Strings
Note that raw strings (a string which include a prefix "r"), string literals will be ignored. This allows these special sequences of characters to be included in strings without being changed.
DataString = r"0\t12\t24"
print (DataString)
Returns
0\t12\t24
Which maybe an undesired output
String Lengths
It should also be noted that string literals are only one character in length.
DataString = "0\t12\t24"
print (len(DataString))
Returns
7
The raw string has a length of 9.
In the Tools -> Visual Studio Options Dialog -> Debugging -> Check the "Redirect All Output Window Text to the Immediate Window".
table.setDefaultEditor(Object.class, null);
Guys don't forget to call xmlWriter.Close() and xmlWriter.Dispose() or else your string won't finish creating. It will just be an empty string
There is a more accurate way when there are multi ip addresses available on local machine. Connect
a UDP socket and read its local endpoint:
string localIP;
using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0))
{
socket.Connect("8.8.8.8", 65530);
IPEndPoint endPoint = socket.LocalEndPoint as IPEndPoint;
localIP = endPoint.Address.ToString();
}
Connect
on a UDP socket has the following effect: it sets the destination for Send
/Recv
, discards all packets from other addresses, and - which is what we use - transfers the socket into "connected" state, settings its appropriate fields. This includes checking the existence of the route to the destination according to the system's routing table and setting the local endpoint accordingly. The last part seems to be undocumented officially but it looks like an integral trait of Berkeley sockets API (a side effect of UDP "connected" state) that works reliably in both Windows and Linux across versions and distributions.
So, this method will give the local address that would be used to connect to the specified remote host. There is no real connection established, hence the specified remote ip can be unreachable.
HttpUtil being deprecated, this is the correct method
StringBuffer url = req.getRequestURL();
String queryString = req.getQueryString();
if (queryString != null) {
url.append('?');
url.append(queryString);
}
String requestURL = url.toString();
Just set object-fit: cover;
on the img .
body {
margin: 0;
}
img {
display: block;
width: 100vw;
height: 100vh;
object-fit: cover; /* or object-fit: contain; */
}
_x000D_
<img src="http://lorempixel.com/1500/1000" />
_x000D_
See MDN - regarding object-fit: cover
:
The replaced content is sized to maintain its aspect ratio while filling the element’s entire content box. If the object's aspect ratio does not match the aspect ratio of its box, then the object will be clipped to fit.
And for object-fit: contain
:
The replaced content is scaled to maintain its aspect ratio while fitting within the element’s content box. The entire object is made to fill the box, while preserving its aspect ratio, so the object will be "letterboxed" if its aspect ratio does not match the aspect ratio of the box.
Also, see this Codepen demo which compares object-fit: cover
applied to an image with background-size: cover
applied to a background image
body {
margin: 0;
}
img {
position: fixed;
width: 0;
height: 0;
padding: 50vh 50vw;
background: url(http://lorempixel.com/1500/1000/city/Dummy-Text) no-repeat;
background-size: cover;
}
_x000D_
<img src="http://placehold.it/1500x1000" />
_x000D_
To create setup projects in Visual Studio 2012 with InstallShield Limited Edition, watch this video.
The InstallShield limited edition that cannot install services.
"ISLE is by far the worst installer option and the upgraded, read - paid for, version is cumbersome to use at best and impossible in most situations. InnoSetup, Nullsoft, Advanced, WiX, or just about any other installer is better. If you did a survey you would see that nobody is using ISLE. I don't know why you guys continue to associate with InstallShield. It damages your credibility. Any developer worth half his weight in salt knows ISLE is worthless and when you stand behind it we have to question Microsoft's judgment."
By Edward Miller (comments in Visual Studio Installer Projects Extension).
The WiX Toolset, which, while powerful is exceeding user-unfriendly and has a steep learning curve. There is even a downloadable template for installing Windows services (ref. VS2012: Installer for Windows services?).
For Visual Studio 2013, see blog post Creating installers with Visual Studio.
I had issues getting event.stopPropagation()
working. If you do too, try moving it to the top of your click handler function, that was what I needed to do to stop the event from bubbling. Example function:
toggleFilter(e) {
e.stopPropagation(); // If moved to the end of the function, will not work
let target = e.target;
let i = 10; // Sanity breaker
while(true) {
if (--i === 0) { return; }
if (target.classList.contains("filter")) {
target.classList.toggle("active");
break;
}
target = target.parentNode;
}
}
create a batch-file with the following code:
dir %1 /b /a-d > list.txt
Then drag & drop a directory on it and the files inside the directory will be listed in list.txt
Yes, countries have specific IP address ranges as you mentioned.
For example, Australia is between 16777216 - 16777471. China is between 16777472 - 16778239. But one country may have multiple ranges. For example, Australia also has this range between 16778240 - 16779263
(These are numerical conversions of IP addresses. It depends whether you use IPv4 or IPv6)
More information about these ranges can be seen here: http://software77.net/cidr-101.html
We get the ip addresses of our website visitors and sometimes want to make relevant campaign for a specific country. We were using bulk conversion tools but later on decided to define the rules in an Excel file and convert it in the tool. And we have built this Excel template: https://www.someka.net/excel-template/ip-to-country-converter/
Now we use this for our own needs and also sell it. I don't want it to be a sales pitch but for those who are looking for an easy solution can benefit from this.
I would do this:
data["list"].append({'b':'2'})
so simply you are adding an object to the list that is present in "data"
If you find yourself unable to catch errors with any of the solutions provided here, it may be that the server isn't handling CORS requests.
In that event, Javascript, much less Angular, can access the error information.
Look for warnings in your console that include CORB
or Cross-Origin Read Blocking
.
Also, the syntax has changed for handling errors (as described in every other answer). You now use pipe-able operators, like so:
this.service.requestsMyInfo(payload).pipe(
catcheError(err => {
// handle the error here.
})
);
If you have thousands of lines, I guess the easiest way is like this:
-select the line that is the start point for your cursor
-while you are holding alt + shift select the line that is endpoint for your cursor
That's it. Now you have a giant cursor. You can write anything to all of these lines.
Try BeanComparator from Apache Commons.
import org.apache.commons.beanutils.BeanComparator;
BeanComparator fieldComparator = new BeanComparator("fruitName");
Collections.sort(fruits, fieldComparator);
When you use the start command to a website it will use the default browser by default but if you want to use a specific browser then use start iexplorer.exe www.website.com
Also you cannot have http://
in the url.
self.navigationItem.rightBarButtonItem =[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(refreshData)];
}
-(void)refreshData{
progressHud= [MBProgressHUD showHUDAddedTo:self.navigationController.view animated:YES];
[progressHud setLabelText:@"?????..."];
[self loadNetwork];
}
I have seen a pretty neat article about this... so if you like this:
CREATE PROC [dbo].[spUpdateMarks]
@inputJSON VARCHAR(MAX) -- '[{"ID":"1","C":"60","CPP":"60","CS":"60"}]'
AS
BEGIN
-- Temp table to hold the parsed data
DECLARE @TempTableVariable TABLE(
element_id INT,
sequenceNo INT,
parent_ID INT,
[Object_ID] INT,
[NAME] NVARCHAR(2000),
StringValue NVARCHAR(MAX),
ValueType NVARCHAR(10)
)
-- Parse JSON string into a temp table
INSERT INTO @TempTableVariable
SELECT * FROM parseJSON(@inputJSON)
END
Try to look here:
https://www.simple-talk.com/sql/t-sql-programming/consuming-json-strings-in-sql-server/
There is a complete ASP.Net project about this here: http://www.codeproject.com/Articles/788208/Update-Multiple-Rows-of-GridView-using-JSON-in-ASP
Your Activity
is extending ActionBarActivity
which requires the AppCompat.theme
to be applied.
Change from ActionBarActivity
to Activity
or FragmentActivity
, it will solve the problem.
set myPATH="C:\Users\DEB\Downloads\10.1.1.0.4"
cd %myPATH%
The single quotes do not indicate a string, they make it starts: 'C:\
instead of C:\
so
%name%
is the usual syntax for expanding a variable, the !name!
syntax needs to be enabled using the command setlocal ENABLEDELAYEDEXPANSION
first, or by running the command prompt with CMD /V:ON
.
Don't use PATH as your name, it is a system name that contains all the locations of executable programs. If you overwrite it, random bits of your script will stop working. If you intend to change it, you need to do set PATH=%PATH%;C:\Users\DEB\Downloads\10.1.1.0.4
to keep the current PATH content, and add something to the end.
Start Visual Studio. Go to Tools->Options and expand Projects and solutions. Select VC++ Directories from the tree and choose Include Files from the combo on the right.
You should see:
$(WindowsSdkDir)\include
If this is missing, you found a problem. If not, search for a file. It should be located in
32 bit systems:
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include
64 bit systems:
C:\Program Files (x86)\Microsoft SDKs\Windows\v6.0A\Include
if VS was installed in the default directory.
In latest ES script, you can do something like this:
let p = {foo: "bar"};_x000D_
for (let [key, value] of Object.entries(p)) {_x000D_
console.log(key, value);_x000D_
}
_x000D_
class Permutation
{
public static List<string> Permutate(string seed, List<string> lstsList)
{
loopCounter = 0;
// string s="\w{0,2}";
var lstStrs = PermuateRecursive(seed);
Trace.WriteLine("Loop counter :" + loopCounter);
return lstStrs;
}
// Recursive function to find permutation
private static List<string> PermuateRecursive(string seed)
{
List<string> lstStrs = new List<string>();
if (seed.Length > 2)
{
for (int i = 0; i < seed.Length; i++)
{
str = Swap(seed, 0, i);
PermuateRecursive(str.Substring(1, str.Length - 1)).ForEach(
s =>
{
lstStrs.Add(str[0] + s);
loopCounter++;
});
;
}
}
else
{
lstStrs.Add(seed);
lstStrs.Add(Swap(seed, 0, 1));
}
return lstStrs;
}
//Loop counter variable to count total number of loop execution in various functions
private static int loopCounter = 0;
//Non recursive version of permuation function
public static List<string> Permutate(string seed)
{
loopCounter = 0;
List<string> strList = new List<string>();
strList.Add(seed);
for (int i = 0; i < seed.Length; i++)
{
int count = strList.Count;
for (int j = i + 1; j < seed.Length; j++)
{
for (int k = 0; k < count; k++)
{
strList.Add(Swap(strList[k], i, j));
loopCounter++;
}
}
}
Trace.WriteLine("Loop counter :" + loopCounter);
return strList;
}
private static string Swap(string seed, int p, int p2)
{
Char[] chars = seed.ToCharArray();
char temp = chars[p2];
chars[p2] = chars[p];
chars[p] = temp;
return new string(chars);
}
}
You need something like this :
UPDATE P
SET ExtrasPrice = E.TotalPrice
FROM dbo.BookingPitches AS P
INNER JOIN (SELECT BPE.PitchID, Sum(BPE.Price) AS TotalPrice
FROM BookingPitchExtras AS BPE
WHERE BPE.[Required] = 1
GROUP BY BPE.PitchID) AS E ON P.ID = E.PitchID
WHERE P.BookingID = 1
$('#divID').css("background-image", "url(/myimage.jpg)");
Should do the trick, just hook it up in a click event on the element
$('#divID').click(function()
{
// do my image switching logic here.
});
This depends entirely on the processor you're talking about but it tends to be of the form:
cmp r1, r2
ble label7
In other words, a compare instruction to set the relevant flags, followed by a conditional branch depending on those flags.
This is generally as low as you need to get for programming. You only need to know the machine language for it if you're writing assemblers and you only need to know the microcode and/or circuit designs if you're building processors.
I found this in the PHP manual comments:
/**
* function xml2array
*
* This function is part of the PHP manual.
*
* The PHP manual text and comments are covered by the Creative Commons
* Attribution 3.0 License, copyright (c) the PHP Documentation Group
*
* @author k dot antczak at livedata dot pl
* @date 2011-04-22 06:08 UTC
* @link http://www.php.net/manual/en/ref.simplexml.php#103617
* @license http://www.php.net/license/index.php#doc-lic
* @license http://creativecommons.org/licenses/by/3.0/
* @license CC-BY-3.0 <http://spdx.org/licenses/CC-BY-3.0>
*/
function xml2array ( $xmlObject, $out = array () )
{
foreach ( (array) $xmlObject as $index => $node )
$out[$index] = ( is_object ( $node ) ) ? xml2array ( $node ) : $node;
return $out;
}
It could help you. However, if you convert XML to an array you will loose all attributes that might be present, so you cannot go back to XML and get the same XML.
There is an illustrative example of how to create custom colormaps here.
The docstring is essential for understanding the meaning of
cdict
. Once you get that under your belt, you might use a cdict
like this:
cdict = {'red': ((0.0, 1.0, 1.0),
(0.1, 1.0, 1.0), # red
(0.4, 1.0, 1.0), # violet
(1.0, 0.0, 0.0)), # blue
'green': ((0.0, 0.0, 0.0),
(1.0, 0.0, 0.0)),
'blue': ((0.0, 0.0, 0.0),
(0.1, 0.0, 0.0), # red
(0.4, 1.0, 1.0), # violet
(1.0, 1.0, 0.0)) # blue
}
Although the cdict
format gives you a lot of flexibility, I find for simple
gradients its format is rather unintuitive. Here is a utility function to help
generate simple LinearSegmentedColormaps:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.colors as mcolors
def make_colormap(seq):
"""Return a LinearSegmentedColormap
seq: a sequence of floats and RGB-tuples. The floats should be increasing
and in the interval (0,1).
"""
seq = [(None,) * 3, 0.0] + list(seq) + [1.0, (None,) * 3]
cdict = {'red': [], 'green': [], 'blue': []}
for i, item in enumerate(seq):
if isinstance(item, float):
r1, g1, b1 = seq[i - 1]
r2, g2, b2 = seq[i + 1]
cdict['red'].append([item, r1, r2])
cdict['green'].append([item, g1, g2])
cdict['blue'].append([item, b1, b2])
return mcolors.LinearSegmentedColormap('CustomMap', cdict)
c = mcolors.ColorConverter().to_rgb
rvb = make_colormap(
[c('red'), c('violet'), 0.33, c('violet'), c('blue'), 0.66, c('blue')])
N = 1000
array_dg = np.random.uniform(0, 10, size=(N, 2))
colors = np.random.uniform(-2, 2, size=(N,))
plt.scatter(array_dg[:, 0], array_dg[:, 1], c=colors, cmap=rvb)
plt.colorbar()
plt.show()
By the way, the for-loop
for i in range(0, len(array_dg)):
plt.plot(array_dg[i], markers.next(),alpha=alpha[i], c=colors.next())
plots one point for every call to plt.plot
. This will work for a small number of points, but will become extremely slow for many points. plt.plot
can only draw in one color, but plt.scatter
can assign a different color to each dot. Thus, plt.scatter
is the way to go.
There are a few options available for you depending on the library in question, how it's written, and what level of accuracy you're looking for. Let's review the options, in roughly descending order of desirability.
Always check DefinitelyTyped (https://github.com/DefinitelyTyped/DefinitelyTyped) first. This is a community repo full of literally thousands of .d.ts files and it's very likely the thing you're using is already there. You should also check TypeSearch (https://microsoft.github.io/TypeSearch/) which is a search engine for NPM-published .d.ts files; this will have slightly more definitions than DefinitelyTyped. A few modules are also shipping their own definitions as part of their NPM distribution, so also see if that's the case before trying to write your own.
TypeScript now supports the --allowJs
flag and will make more JS-based inferences in .js files. You can try including the .js file in your compilation along with the --allowJs
setting to see if this gives you good enough type information. TypeScript will recognize things like ES5-style classes and JSDoc comments in these files, but may get tripped up if the library initializes itself in a weird way.
--allowJs
If --allowJs
gave you decent results and you want to write a better definition file yourself, you can combine --allowJs
with --declaration
to see TypeScript's "best guess" at the types of the library. This will give you a decent starting point, and may be as good as a hand-authored file if the JSDoc comments are well-written and the compiler was able to find them.
If --allowJs
didn't work, you might want to use dts-gen (https://github.com/Microsoft/dts-gen) to get a starting point. This tool uses the runtime shape of the object to accurately enumerate all available properties. On the plus side this tends to be very accurate, but the tool does not yet support scraping the JSDoc comments to populate additional types. You run this like so:
npm install -g dts-gen
dts-gen -m <your-module>
This will generate your-module.d.ts
in the current folder.
If you just want to do it all later and go without types for a while, in TypeScript 2.0 you can now write
declare module "foo";
which will let you import
the "foo"
module with type any
. If you have a global you want to deal with later, just write
declare const foo: any;
which will give you a foo
variable.
I found that in my code when I used a ration or percentage for line-height line-height;1.5;
My page would scale in such a way that lower case font and upper case font would take up different page heights (I.E. All caps took more room than all lower). Normally I think this looks better, but I had to go to a fixed height line-height:24px;
so that I could predict exactly how many pixels each page would take with a given number of lines.
(Since I use Gson quite liberally, I am sharing a Gson based approach)
Gson gson = new Gson();
Map<Object,Object> attributes = gson.fromJson(gson.toJson(value),Map.class);
What it does is:
gson.toJson(value)
will serialize your object into its equivalent Json representation. gson.fromJson
will convert the Json string to specified object. (in this example - Map
)There are 2 advantages with this approach:
toJson
method.if you put the alter into a transaction the table should not be locked:
BEGIN;
ALTER TABLE "public"."mytable" ALTER COLUMN "mycolumn" TYPE varchar(40);
COMMIT;
this worked for me blazing fast, few seconds on a table with more than 400k rows.
This example reads 6 bytes into a byte array and writes it to another byte array. It does an XOR operation with the bytes so that the result written to the file is the same as the original starting values. The file is always 6 bytes in size, since it writes at position 0.
using System;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
static void Main()
{
byte[] b1 = { 1, 2, 4, 8, 16, 32 };
byte[] b2 = new byte[6];
byte[] b3 = new byte[6];
byte[] b4 = new byte[6];
FileStream f1;
f1 = new FileStream("test.txt", FileMode.Create, FileAccess.Write);
// write the byte array into a new file
f1.Write(b1, 0, 6);
f1.Close();
// read the byte array
f1 = new FileStream("test.txt", FileMode.Open, FileAccess.Read);
f1.Read(b2, 0, 6);
f1.Close();
// make changes to the byte array
for (int i = 1; i < b2.Length; i++)
{
b2[i] = (byte)(b2[i] ^ (byte)10); //xor 10
}
f1 = new FileStream("test.txt", FileMode.Open, FileAccess.Write);
// write the new byte array into the file
f1.Write(b2, 0, 6);
f1.Close();
f1 = new FileStream("test.txt", FileMode.Open, FileAccess.Read);
// read the byte array
f1.Read(b3, 0, 6);
f1.Close();
// make changes to the byte array
for (int i = 1; i < b3.Length; i++)
{
b4[i] = (byte)(b3[i] ^ (byte)10); //xor 10
}
f1 = new FileStream("test.txt", FileMode.Open, FileAccess.Write);
// b4 will have the same values as b1
f1.Write(b4, 0, 6);
f1.Close();
}
}
}
Unless you write your own Homescreen launcher or use an existing one from Goolge Play, there's "no way" to resize icons.
Well, "no way" does not mean its impossible:
Easy. Won't need to get confused but paths and variables and what to click. Just follow my steps:
Go to the python installer. Run it. Out of the 3 options choose modify. Check py launcher. Next. Check "Add python to environment variables" Install.
Restart the cmd when finished and boom done
With Bootstrap 4+, you can simply add the class custom-select
for your select inputs to drop the browser-specific styling and keep the arrow icons.
Documentation Here: Bootstrap 4 Custom Forms Select Menu
In my case, I have used 2 different context with Unitofwork and Ioc container so i see this problem insistanting while service layer try to make inject second repository to DI. The reason is that exist module has containing other module instance and container supposed to gettng a call from not constractured new repository.. i write here for whome in my shooes
package com.common.test;
public enum Days {
monday(1,"Monday"),tuesday(2,"Tuesday"),wednesday(3,"Wednesday"),
thrusday(4,"Thrusday"),friday(5,"Friday"),saturday(6,"Saturday"),sunday(7,"Sunday");
private int id;
private String desc;
Days(int id,String desc){
this.id=id;
this.desc=desc;
}
public static String getDay(int id){
for (Days day : Days.values()) {
if (day.getId() == id) {
return day.getDesc();
}
}
return null;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
};
Alternatively:
public static T Cast<T>(this dynamic obj) where T:class
{
return obj as T;
}
The answer of Mintir4 is fine, I would also do the following to load the file.
FileInputStream fis = myContext.openFileInput(fn);
BufferedReader r = new BufferedReader(new InputStreamReader(fis));
String s = "";
while ((s = r.readLine()) != null) {
txt += s;
}
r.close();
As an add-on to the answers below, when using INT or non-decimal datatypes in your formulas, remember to multiply the value by 1 and the number of decimals you prefer.
i.e. - TotalPackages
is an INT
and so the denominator TotalContainers
, but I want my result to have up to 6 decimal places.
thus:
((m.TotalPackages * 1.000000) / m.TotalContainers) AS Packages,
My solution was the following:
document.getElementById("agent_details").scrollIntoView();
The property file task is for editing properties files. It contains all sorts of nice features that allow you to modify entries. For example:
<propertyfile file="build.properties">
<entry key="build_number"
type="int"
operation="+"
value="1"/>
</propertyfile>
I've incremented my build_number
by one. I have no idea what the value was, but it's now one greater than what it was before.
<echo>
task to build a property file instead of <propertyfile>
. You can easily layout the content and then use <propertyfile>
to edit that content later on.Example:
<echo file="build.properties">
# Default Configuration
source.dir=1
dir.publish=1
# Source Configuration
dir.publish.html=1
</echo>
Example:
<propertyfile file="default.properties"
comment="Default Configuration">
<entry key="source.dir" value="1"/>
<entry key="dir.publish" value="1"/>
<propertyfile>
<propertyfile file="source.properties"
comment="Source Configuration">
<entry key="dir.publish.html" value="1"/>
<propertyfile>
<concat destfile="build.properties">
<fileset dir="${basedir}">
<include name="default.properties"/>
<include name="source.properties"/>
</fileset>
</concat>
<delete>
<fileset dir="${basedir}">
<include name="default.properties"/>
<include name="source.properties"/>
</fileset>
</delete>
Select the text in nano with the mouse and then right click on the mouse. Text is now copied to your clipboard. If it does not work try to start nano with the mouse option on : nano -m filename
This one worked for me:
def list = [1,2,3,4]
for(item in list){
println item
}
Source: Wikia.
Anyone who is just starting with Haskell and trying to print an Int, use:
module Lib
( someFunc
) where
someFunc :: IO ()
x = 123
someFunc = putStrLn (show x)
If you check the system.log
file for cassandra in /var/log/cassandra
, you will see that this problem occurs because the rpc server has not started.
By default, the start_rpc
is set to false in the cassandra.yaml
file. Set it to start_rpc: true
and then try again.
From Cassandra 3.0 onwards, start_rpc
is set to true by default. https://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html
Only call time pass-by-reference is removed. So change:
call_user_func($func, &$this, &$client ...
To this:
call_user_func($func, $this, $client ...
&$this
should never be needed after PHP4 anyway period.
If you absolutely need $client to be passed by reference, update the function ($func) signature instead (function func(&$client) {
)
Based on Stijn Nevens and modified for Django use to round current time to the nearest 15 minute.
from datetime import date, timedelta, datetime, time
def roundTime(dt=None, dateDelta=timedelta(minutes=1)):
roundTo = dateDelta.total_seconds()
if dt == None : dt = datetime.now()
seconds = (dt - dt.min).seconds
# // is a floor division, not a comment on following line:
rounding = (seconds+roundTo/2) // roundTo * roundTo
return dt + timedelta(0,rounding-seconds,-dt.microsecond)
dt = roundTime(datetime.now(),timedelta(minutes=15)).strftime('%H:%M:%S')
dt = 11:45:00
if you need full date and time just remove the .strftime('%H:%M:%S')
Change string[] lines = File.ReadLines("c:\\file.txt");
to IEnumerable<string> lines = File.ReadLines("c:\\file.txt");
The rest of your code should work fine.
CSS selectors
single class first match
soup.select_one('.stylelistrow')
list of matches
soup.select('.stylelistrow')
compound class (i.e. AND another class)
soup.select_one('.stylelistrow.otherclassname')
soup.select('.stylelistrow.otherclassname')
Spaces in compound class names e.g. class = stylelistrow otherclassname
are replaced with ".". You can continue to add classes.
list of classes (OR - match whichever present
soup.select_one('.stylelistrow, .otherclassname')
soup.select('.stylelistrow, .otherclassname')
bs4 4.7.1 +
Specific class whose innerText
contains a string
soup.select_one('.stylelistrow:contains("some string")')
soup.select('.stylelistrow:contains("some string")')
Specific class which has a certain child element e.g. a
tag
soup.select_one('.stylelistrow:has(a)')
soup.select('.stylelistrow:has(a)')
I had the same problem with three projects in one solution and all of the suggestions didn't work until I made a reference in the reference file of the web site project to the project where the edmx file sits.
I think this is what you're looking for.
List<String> columnData = new List<String>();
using(SqlConnection connection = new SqlConnection("conn_string"))
{
connection.Open();
string query = "SELECT Column1 FROM Table1";
using(SqlCommand command = new SqlCommand(query, connection))
{
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
columnData.Add(reader.GetString(0));
}
}
}
}
Not tested, but this should work fine.
That can be done using the limit function, this might not seem new but i have added something.The code should go:
SELECT * FROM table_name LIMIT 100,10;
for the above case assume that you have 110 rows from the table and you want to select the last ten, 100 is the row you want to start to print(if you are to print), and ten shows how many rows you want to pick from the table. For a more precised way you can start by selecting all the rows you want to print out and then you grab the last row id if you have an id column(i recommend you put one) then subtract ten from the last id number and that will be where you want to start, this will make your program to function autonomously and for any number of rows, but if you write the value directly i think you will have to change the code every time data is inserted into your table.I think this helps.Pax et Bonum.
rev4: A very eloquent comment by user Sammaron has noted that, perhaps, this answer previously confused top-down and bottom-up. While originally this answer (rev3) and other answers said that "bottom-up is memoization" ("assume the subproblems"), it may be the inverse (that is, "top-down" may be "assume the subproblems" and "bottom-up" may be "compose the subproblems"). Previously, I have read on memoization being a different kind of dynamic programming as opposed to a subtype of dynamic programming. I was quoting that viewpoint despite not subscribing to it. I have rewritten this answer to be agnostic of the terminology until proper references can be found in the literature. I have also converted this answer to a community wiki. Please prefer academic sources. List of references: {Web: 1,2} {Literature: 5}
Dynamic programming is all about ordering your computations in a way that avoids recalculating duplicate work. You have a main problem (the root of your tree of subproblems), and subproblems (subtrees). The subproblems typically repeat and overlap.
For example, consider your favorite example of Fibonnaci. This is the full tree of subproblems, if we did a naive recursive call:
TOP of the tree
fib(4)
fib(3)...................... + fib(2)
fib(2)......... + fib(1) fib(1)........... + fib(0)
fib(1) + fib(0) fib(1) fib(1) fib(0)
fib(1) fib(0)
BOTTOM of the tree
(In some other rare problems, this tree could be infinite in some branches, representing non-termination, and thus the bottom of the tree may be infinitely large. Furthermore, in some problems you might not know what the full tree looks like ahead of time. Thus, you might need a strategy/algorithm to decide which subproblems to reveal.)
There are at least two main techniques of dynamic programming which are not mutually exclusive:
Memoization - This is a laissez-faire approach: You assume that you have already computed all subproblems and that you have no idea what the optimal evaluation order is. Typically, you would perform a recursive call (or some iterative equivalent) from the root, and either hope you will get close to the optimal evaluation order, or obtain a proof that you will help you arrive at the optimal evaluation order. You would ensure that the recursive call never recomputes a subproblem because you cache the results, and thus duplicate sub-trees are not recomputed.
fib(100)
, you would just call this, and it would call fib(100)=fib(99)+fib(98)
, which would call fib(99)=fib(98)+fib(97)
, ...etc..., which would call fib(2)=fib(1)+fib(0)=1+0=1
. Then it would finally resolve fib(3)=fib(2)+fib(1)
, but it doesn't need to recalculate fib(2)
, because we cached it.Tabulation - You can also think of dynamic programming as a "table-filling" algorithm (though usually multidimensional, this 'table' may have non-Euclidean geometry in very rare cases*). This is like memoization but more active, and involves one additional step: You must pick, ahead of time, the exact order in which you will do your computations. This should not imply that the order must be static, but that you have much more flexibility than memoization.
fib(2)
,fib(3)
,fib(4)
... caching every value so you can compute the next ones more easily. You can also think of it as filling up a table (another form of caching).(At it's most general, in a "dynamic programming" paradigm, I would say the programmer considers the whole tree, then writes an algorithm that implements a strategy for evaluating subproblems which can optimize whatever properties you want (usually a combination of time-complexity and space-complexity). Your strategy must start somewhere, with some particular subproblem, and perhaps may adapt itself based on the results of those evaluations. In the general sense of "dynamic programming", you might try to cache these subproblems, and more generally, try avoid revisiting subproblems with a subtle distinction perhaps being the case of graphs in various data structures. Very often, these data structures are at their core like arrays or tables. Solutions to subproblems can be thrown away if we don't need them anymore.)
[Previously, this answer made a statement about the top-down vs bottom-up terminology; there are clearly two main approaches called Memoization and Tabulation that may be in bijection with those terms (though not entirely). The general term most people use is still "Dynamic Programming" and some people say "Memoization" to refer to that particular subtype of "Dynamic Programming." This answer declines to say which is top-down and bottom-up until the community can find proper references in academic papers. Ultimately, it is important to understand the distinction rather than the terminology.]
Memoization is very easy to code (you can generally* write a "memoizer" annotation or wrapper function that automatically does it for you), and should be your first line of approach. The downside of tabulation is that you have to come up with an ordering.
*(this is actually only easy if you are writing the function yourself, and/or coding in an impure/non-functional programming language... for example if someone already wrote a precompiled fib
function, it necessarily makes recursive calls to itself, and you can't magically memoize the function without ensuring those recursive calls call your new memoized function (and not the original unmemoized function))
Note that both top-down and bottom-up can be implemented with recursion or iterative table-filling, though it may not be natural.
With memoization, if the tree is very deep (e.g. fib(10^6)
), you will run out of stack space, because each delayed computation must be put on the stack, and you will have 10^6 of them.
Either approach may not be time-optimal if the order you happen (or try to) visit subproblems is not optimal, specifically if there is more than one way to calculate a subproblem (normally caching would resolve this, but it's theoretically possible that caching might not in some exotic cases). Memoization will usually add on your time-complexity to your space-complexity (e.g. with tabulation you have more liberty to throw away calculations, like using tabulation with Fib lets you use O(1) space, but memoization with Fib uses O(N) stack space).
If you are also doing a extremely complicated problems, you might have no choice but to do tabulation (or at least take a more active role in steering the memoization where you want it to go). Also if you are in a situation where optimization is absolutely critical and you must optimize, tabulation will allow you to do optimizations which memoization would not otherwise let you do in a sane way. In my humble opinion, in normal software engineering, neither of these two cases ever come up, so I would just use memoization ("a function which caches its answers") unless something (such as stack space) makes tabulation necessary... though technically to avoid a stack blowout you can 1) increase the stack size limit in languages which allow it, or 2) eat a constant factor of extra work to virtualize your stack (ick), or 3) program in continuation-passing style, which in effect also virtualizes your stack (not sure the complexity of this, but basically you will effectively take the deferred call chain from the stack of size N and de-facto stick it in N successively nested thunk functions... though in some languages without tail-call optimization you may have to trampoline things to avoid a stack blowout).
Here we list examples of particular interest, that are not just general DP problems, but interestingly distinguish memoization and tabulation. For example, one formulation might be much easier than the other, or there may be an optimization which basically requires tabulation:
The Following command displays extra informations
curl -X POST http://httpbin.org/post -v > /dev/null
You can ask server to send just HEAD, instead of full response
curl -X HEAD -I http://httpbin.org/
Note:
In some cases, server may send different headers for POST and HEAD. But in almost all cases headers are same.
Is this what you are looking for ?
Sub getRowCol()
Range("A1").Select ' example
Dim col, row
col = Split(Selection.Address, "$")(1)
row = Split(Selection.Address, "$")(2)
MsgBox "Column is : " & col
MsgBox "Row is : " & row
End Sub