Try this:
import pandas as pd
with open('filename.csv') as f:
data = pd.read_csv(f)
Looks like it will take care of the encoding without explicitly expressing it through argument
RMDIR or RD if you are using the classic Command Prompt (cmd.exe):
rd /s /q "path"
RMDIR [/S] [/Q] [drive:]path
RD [/S] [/Q] [drive:]path
/S Removes all directories and files in the specified directory in addition to the directory itself. Used to remove a directory tree.
/Q Quiet mode, do not ask if ok to remove a directory tree with /S
If you are using PowerShell you can use Remove-Item
(which is aliased to del
, erase
, rd
, ri
, rm
and rmdir
) and takes a -Recurse
argument that can be shorted to -r
rd -r "path"
I think is better automate the process:
Add the composer.lock file in your git repository, make sure you use composer.phar install --no-dev when you release, but in you dev machine you could use any composer command without concerns, this will no go to production, the production will base its dependencies in the lock file.
On the server you checkout this specific version or label, and run all the tests before replace the app, if the tests pass you continue the deployment.
If the test depend on dev dependencies, as composer do not have a test scope dependency, a not much elegant solution could be run the test with the dev dependencies (composer.phar install), remove the vendor library, run composer.phar install --no-dev again, this will use cached dependencies so is faster. But that is a hack if you know the concept of scopes in other build tools
Automate this and forget the rest, go drink a beer :-)
PS.: As in the @Sven comment bellow, is not a good idea not checkout the composer.lock file, because this will make composer install work as composer update.
You could do that automation with http://deployer.org/ it is a simple tool.
How about this function:
public static String toString(final Collection<?> collection) {
final StringBuilder sb = new StringBuilder("{");
boolean isFirst = true;
for (final Object object : collection) {
if (!isFirst)
sb.append(',');
else
isFirst = false;
sb.append(object);
}
sb.append('}');
return sb.toString();
}
it works for any type of collection...
You mean like this?
void foo ( int i ) {
if ( i < 0 ) return; // do nothing
// do something
}
It's difficult to answer without knowing how the "full name" is formatted.
It could be "Last Name, First Name Middle Name" or "First Name Middle Name Last Name", etc.
Basically you'll have to use the SUBSTRING function
SUBSTRING ( expression , start , length )
And probably the CHARINDEX function
CHARINDEX (substr, expression)
To figure out the start and length for each part you want to extract.
So let's say the format is "First Name Last Name" you could (untested.. but should be close) :
SELECT
SUBSTRING(fullname, 1, CHARINDEX(' ', fullname) - 1) AS FirstName,
SUBSTRING(fullname, CHARINDEX(' ', fullname) + 1, len(fullname)) AS LastName
FROM YourTable
In order to perform chmod, you need to be owner of the file you are trying to modify, or the root user.
For the convenience of usage, I sum up the note of striping punctuation from a string in both Python 2 and Python 3. Please refer to other answers for the detailed description.
Python 2
import string
s = "string. With. Punctuation?"
table = string.maketrans("","")
new_s = s.translate(table, string.punctuation) # Output: string without punctuation
Python 3
import string
s = "string. With. Punctuation?"
table = str.maketrans(dict.fromkeys(string.punctuation)) # OR {key: None for key in string.punctuation}
new_s = s.translate(table) # Output: string without punctuation
Html
<img id="imgElem"></img>
Js
string baseStr64="/9j/4AAQSkZJRgABAQE...";
imgElem.setAttribute('src', "data:image/jpg;base64," + baseStr64);
If you want to pass parameters like user names, product names, ... etc. you can use open source template engine NVelocity to produce your final email / HTML's.
An example of NVelocity template (MailTemplate.vm) :
A sample email template by <b>$name</b>.
<br />
Foreach example :
<br />
#foreach ($item in $itemList)
[Date: $item.Date] Name: $item.Name, Value: $itemValue.Value
<br /><br />
#end
Generating mail body by MailTemplate.vm in your application :
VelocityContext context = new VelocityContext();
context.Put("name", "ScarletGarden");
context.Put("itemList", itemList);
StringWriter writer = new StringWriter();
Velocity.MergeTemplate("MailTemplate.vm", context, writer);
string mailBody = writer.GetStringBuilder().ToString();
The result mail body is :
A sample email template by ScarletGarden.
Foreach example :
[Date: 12.02.2009] Name: Item 1, Value: 09
[Date: 21.02.2009] Name: Item 4, Value: 52
[Date: 01.03.2009] Name: Item 2, Value: 21
[Date: 23.03.2009] Name: Item 6, Value: 24
For editing the templates, maybe you can use FCKEditor and save your templates to files.
You can use a library like ShieldUI to do that.
It supports exporting to both XML and XLSX widely-used Excel formats.
More details here: http://demos.shieldui.com/web/grid-general/export-to-excel
I hope it's not a "suicide note", but I can see your point. You hit on what is at the same time both a strength and a problem of Scala: its extensibility. This lets us implement most major functionality in libraries. In some other languages, sequences with something like map
or collect
would be built in, and nobody has to see all the hoops the compiler has to go through to make them work smoothly. In Scala, it's all in a library, and therefore out in the open.
In fact the functionality of map
that's supported by its complicated type is pretty advanced. Consider this:
scala> import collection.immutable.BitSet
import collection.immutable.BitSet
scala> val bits = BitSet(1, 2, 3)
bits: scala.collection.immutable.BitSet = BitSet(1, 2, 3)
scala> val shifted = bits map { _ + 1 }
shifted: scala.collection.immutable.BitSet = BitSet(2, 3, 4)
scala> val displayed = bits map { _.toString + "!" }
displayed: scala.collection.immutable.Set[java.lang.String] = Set(1!, 2!, 3!)
See how you always get the best possible type? If you map Int
s to Int
s you get again a BitSet
, but if you map Int
s to String
s, you get a general Set
. Both the static type and the runtime representation of map's result depend on the result type of the function that's passed to it. And this works even if the set is empty, so the function is never applied! As far as I know there is no other collection framework with an equivalent functionality. Yet from a user perspective this is how things are supposed to work.
The problem we have is that all the clever technology that makes this happen leaks into the type signatures which become large and scary. But maybe a user should not be shown by default the full type signature of map
? How about if she looked up map
in BitSet
she got:
map(f: Int => Int): BitSet (click here for more general type)
The docs would not lie in that case, because from a user perspective indeed map has the type (Int => Int) => BitSet
. But map
also has a more general type which can be inspected by clicking on another link.
We have not yet implemented functionality like this in our tools. But I believe we need to do this, to avoid scaring people off and to give more useful info. With tools like that, hopefully smart frameworks and libraries will not become suicide notes.
If You need sth different than AUTO_INCREMENT you can still use triggers.
If your UIBarButtonItem is already allocated like in a storyboard. (printBtn)
let btn = UIButton(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
btn.setImage(UIImage(named: Constants.ImageName.print)?.withRenderingMode(.alwaysTemplate), for: .normal)
btn.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handlePrintPress(tapGesture:))))
printBtn.customView = btn
For JSON:
Content-Type: application/json
For JSON-P:
Content-Type: application/javascript
In Windows, capitalization in paths doesn't matter. In Linux it does.
When you autoload, use "Foo" not "foo".
I believe that will do the trick.
I think it works when you take it out of autoloading because codeigniter is smart enough to figure out the capitalization in the path and classes are case independent in php.
One obvious and straightforward possibility is to use "if-else conditions". In that example
x <- c(1, 2, 4)
y <- c(1, 4, 5)
w <- ifelse(x <= 1, "good", ifelse((x >= 3) & (x <= 5), "bad", "fair"))
data.frame(x, y, w)
** For the additional question in the edit** Is that what you expect ?
> d1 <- c("e", "c", "a")
> d2 <- c("e", "a", "b")
>
> w <- ifelse((d1 == "e") & (d2 == "e"), 1,
+ ifelse((d1=="a") & (d2 == "b"), 2,
+ ifelse((d1 == "e"), 3, 99)))
>
> data.frame(d1, d2, w)
d1 d2 w
1 e e 1
2 c a 99
3 a b 2
If you do not feel comfortable with the ifelse
function, you can also work with the if
and else
statements for such applications.
Here you go. Set justify-content: space-between
on the flex container.
.main { _x000D_
display: flex; _x000D_
justify-content: space-between;_x000D_
}_x000D_
.a, .b, .c { background: #efefef; border: 1px solid #999; }_x000D_
.b { text-align: center; }
_x000D_
<h2>With title</h2>_x000D_
<div class="main">_x000D_
<div class="a"><a href="#">Home</a></div>_x000D_
<div class="b"><a href="#">Some title centered</a></div>_x000D_
<div class="c"><a href="#">Contact</a></div>_x000D_
</div>_x000D_
<h2>Without title</h2>_x000D_
<div class="main">_x000D_
<div class="a"><a href="#">Home</a></div>_x000D_
<!-- <div class="b"><a href="#">Some title centered</a></div> -->_x000D_
<div class="c"><a href="#">Contact</a></div>_x000D_
</div>
_x000D_
You need to specify what are the class invariants, i.e. properties which will always be true for an instance of the class (for example, the title of a book will never be null, or the size of a dog will always be > 0).
These invariants should be established during construction, and be preserved along the lifetime of the object, which means that methods shall not break the invariants. The constructors can set these invariants either by having compulsory arguments, or by setting default values:
class Book {
private String title; // not nullable
private String isbn; // nullable
// Here we provide a default value, but we could also skip the
// parameterless constructor entirely, to force users of the class to
// provide a title
public Book()
{
this("Untitled");
}
public Book(String title) throws IllegalArgumentException
{
if (title == null)
throw new IllegalArgumentException("Book title can't be null");
this.title = title;
// leave isbn without value
}
// Constructor with title and isbn
}
However, the choice of these invariants highly depends on the class you're writing, how you'll use it, etc., so there's no definitive answer to your question.
If you have same columns in all your csv
files then you can try the code below.
I have added header=0
so that after reading csv
first row can be assigned as the column names.
import pandas as pd
import glob
path = r'C:\DRO\DCL_rawdata_files' # use your path
all_files = glob.glob(path + "/*.csv")
li = []
for filename in all_files:
df = pd.read_csv(filename, index_col=None, header=0)
li.append(df)
frame = pd.concat(li, axis=0, ignore_index=True)
The line in your controller code, which reads $scope.myFunc={
should be $scope.myFunc = function() {
the function()
part is important to indicate, it is a function!
The updated controller code would be
app.controller('myCtrl',['$scope',function($cope){
$scope.myFunc = function() {
console.log("function called");
};
}]);
If the hilighting gets messed up, if your ivars aren't hilighted or anything else, just do ?-A ?-X ?-V, which will select all, cut, and paste and all the hilighting will be corrected. So just hold down ? and press A then X then V.
Python idiom to return first item or None?
The most Pythonic approach is what the most upvoted answer demonstrated, and it was the first thing to come to my mind when I read the question. Here's how to use it, first if the possibly empty list is passed into a function:
def get_first(l):
return l[0] if l else None
And if the list is returned from a get_list
function:
l = get_list()
return l[0] if l else None
for
When I began trying to think of clever ways to do this, this is the second thing I thought of:
for item in get_list():
return item
This presumes the function ends here, implicitly returning None
if get_list
returns an empty list. The below explicit code is exactly equivalent:
for item in get_list():
return item
return None
if some_list
The following was also proposed (I corrected the incorrect variable name) which also uses the implicit None
. This would be preferable to the above, as it uses the logical check instead of an iteration that may not happen. This should be easier to understand immediately what is happening. But if we're writing for readability and maintainability, we should also add the explicit return None
at the end:
some_list = get_list()
if some_list:
return some_list[0]
or [None]
and select zeroth indexThis one is also in the most up-voted answer:
return (get_list()[:1] or [None])[0]
The slice is unnecessary, and creates an extra one-item list in memory. The following should be more performant. To explain, or
returns the second element if the first is False
in a boolean context, so if get_list
returns an empty list, the expression contained in the parentheses will return a list with 'None', which will then be accessed by the 0
index:
return (get_list() or [None])[0]
The next one uses the fact that and returns the second item if the first is True
in a boolean context, and since it references my_list twice, it is no better than the ternary expression (and technically not a one-liner):
my_list = get_list()
return (my_list and my_list[0]) or None
next
Then we have the following clever use of the builtin next
and iter
return next(iter(get_list()), None)
To explain, iter
returns an iterator with a .next
method. (.__next__
in Python 3.) Then the builtin next
calls that .next
method, and if the iterator is exhausted, returns the default we give, None
.
a if b else c
) and circling backThe below was proposed, but the inverse would be preferable, as logic is usually better understood in the positive instead of the negative. Since get_list
is called twice, unless the result is memoized in some way, this would perform poorly:
return None if not get_list() else get_list()[0]
The better inverse:
return get_list()[0] if get_list() else None
Even better, use a local variable so that get_list
is only called one time, and you have the recommended Pythonic solution first discussed:
l = get_list()
return l[0] if l else None
The easiest way if you have
<div ng-repeat="person in data | filter: query"></div>
Filtered data length
<div>{{ (data | filter: query).length }}</div>
I had the same problem but I was using a reverse proxy.
So I had to set
client_max_body_size 50m;
inside both configure files :
Building on Jon Skeet's reply, there are times when you want to invoke a delegate and wait for its execution to complete before the current thread continues. In those cases the Invoke call is what you want.
In multi-threading applications, you may not want a thread to wait on a delegate to finish execution, especially if that delegate performs I/O (which could make the delegate and your thread block).
In those cases the BeginInvoke would be useful. By calling it, you're telling the delegate to start but then your thread is free to do other things in parallel with the delegate.
Using BeginInvoke increases the complexity of your code but there are times when the improved performance is worth the complexity.
Set padding-top to be an appropriate value to push the x down, then subtract the value you have for padding-top from the height.
This works:
import matplotlib.pyplot as plt
fig, ax1 = plt.subplots(1,1)
x1 = [0,1,2,3]
squad = ['Fultz','Embiid','Dario','Simmons']
ax1.set_xticks(x1)
ax1.set_xticklabels(squad, minor=False, rotation=45)
First
ps -ef
to list all processes. Note the the process number of the one you want to kill. Then
kill 1234
were you replace 1234 with the process number that you want.
Alternatively, if you are absolutely certain that there is only one process with a particular name, or you want to kill multiple processes which share the same name
killall processname
Given a known locality, for reference in functional form. The ECHOTIMESTAMP
call shows how to get the timestamp into a variable (DTS
in this example.)
@ECHO off
CALL :ECHOTIMESTAMP
GOTO END
:TIMESTAMP
SETLOCAL EnableDelayedExpansion
SET DATESTAMP=!DATE:~10,4!-!DATE:~4,2!-!DATE:~7,2!
SET TIMESTAMP=!TIME:~0,2!-!TIME:~3,2!-!TIME:~6,2!
SET DTS=!DATESTAMP: =0!-!TIMESTAMP: =0!
ENDLOCAL & SET "%~1=%DTS%"
GOTO :EOF
:ECHOTIMESTAMP
SETLOCAL
CALL :TIMESTAMP DTS
ECHO %DTS%
ENDLOCAL
GOTO :EOF
:END
EXIT /b 0
And saved to file, timestamp.bat, here's the output:
Another quick way:
date_default_timezone_set($userTimezone);
echo date("l");
// C++11.
std::string index_html=R"html(
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>VIPSDK MONITOR</title>
<meta http-equiv="refresh" content="10">
</head>
<style type="text/css">
</style>
</html>
)html";
The right answer is : $("#videoContainer")[0].pause();
I experienced this issue when calling my web api endpoint and solved it.
In my case it was an issue in the way the client was encoding the body content. I was not specifying the encoding or media type. Specifying them solved it.
Not specifying encoding type, caused 415 error:
var content = new StringContent(postData);
httpClient.PostAsync(uri, content);
Specifying the encoding and media type, success:
var content = new StringContent(postData, Encoding.UTF8, "application/json");
httpClient.PostAsync(uri, content);
The solution that worked for me with PHP / PDO.
public function createTrainingDatabase($p_iRecordnr){
// Methode: Create an database envirioment for a student by copying the original
// @parameter: $p_iRecordNumber, type:integer, scope:local
// @var: $this->sPdoQuery, type:string, scope:member
// @var: $bSuccess, type:boolean, scope:local
// @var: $aTables, type:array, scope:local
// @var: $iUsernumber, type:integer, scope:local
// @var: $sNewDBName, type:string, scope:local
// @var: $iIndex, type:integer, scope:local
// -- Create first the name of the new database --
$aStudentcard = $this->fetchUsercardByRecordnr($p_iRecordnr);
$iUserNumber = $aStudentcard[0][3];
$sNewDBName = $_SESSION['DB_name']."_".$iUserNumber;
// -- Then create the new database --
$this->sPdoQuery = "CREATE DATABASE `".$sNewDBName."`;";
$this->PdoSqlReturnTrue();
// -- Create an array with the tables you want to be copied --
$aTables = array('1eTablename','2ndTablename','3thTablename');
// -- Populate the database --
for ($iIndex = 0; $iIndex < count($aTables); $iIndex++)
{
// -- Create the table --
$this->sPdoQuery = "CREATE TABLE `".$sNewDBName."`.`".$aTables[$iIndex]."` LIKE `".$_SESSION['DB_name']."`.`".$aTables[$iIndex]."`;";
$bSuccess = $this->PdoSqlReturnTrue();
if(!$bSuccess ){echo("Could not create table: ".$aTables[$iIndex]."<BR>");}
else{echo("Created the table ".$aTables[$iIndex]."<BR>");}
// -- Fill the table --
$this->sPdoQuery = "REPLACE `".$sNewDBName."`.`".$aTables[$iIndex]."` SELECT * FROM `".$_SESSION['DB_name']."`.`".$aTables[$iIndex]."`";
$bSuccess = $this->PdoSqlReturnTrue();
if(!$bSuccess ){echo("Could not fill table: ".$aTables[$iIndex]."<BR>");}
else{echo("Filled table ".$aTables[$index]."<BR>");}
}
}
I had this exact same problem which made loss hours so i'm inspired to share my findings and solutions that worked for me.
1. Use an excel file
This is the approach I adopted. Instead of using a csv file, I used an excel file (.xlsx) with content like below.
id username email token website
johndoe [email protected] divostar.com
bobstone [email protected] divosays.com
Notice that the id column has no value.
Next, connect to your DB using Microsoft SQL Server Management Studio and right click on your database and select import data (submenu under task). Select Microsoft Excel as source. When you arrive at the stage called "Select Source Tables and Views", click edit mappings. For id
column under destination, click on it and select ignore . Don't check Enable Identity insert
unless you want to mantain ids incases where you are importing data from another database and would like to maintain the auto increment id of the source db. Proceed to finish and that's it. Your data will be imported smoothly.
2. Using CSV file
In your csv file, make sure your data is like below.
id,username,email,token,website
,johndoe,[email protected],,divostar.com
,bobstone,[email protected],,divosays.com
Run the query below:
BULK INSERT Metrics FROM 'D:\Data Management\Data\CSV2\Production Data 2004 - 2016.csv '
WITH (FIRSTROW = 2, FIELDTERMINATOR = ',', ROWTERMINATOR = '\n');
The problem with this approach is that the CSV should be in the DB server or some shared folder that the DB can have access to otherwise you may get error like "Cannot opened file. The operating system returned error code 21 (The device is not ready)".
If you are connecting to a remote database, then you can upload your CSV to a directory on that server and reference the path in bulk insert.
3. Using CSV file and Microsoft SQL Server Management Studio import option
Launch your import data like in the first approach. For source, select Flat file Source and browse for your CSV file. Make sure the right menu (General, Columns, Advanced, Preview) are ok. Make sure to set the right delimiter under columns menu (Column delimiter). Just like in the excel approach above, click edit mappings. For id column under destination, click on it and select ignore .
Proceed to finish and that's it. Your data will be imported smoothly.
This worked for me:
ActiveWindow.SmallScroll down:=0
or more simply:
ActiveWindow.SmallScroll 0
Try to do this:
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
getSupportActionBar().setDisplayShowTitleEnabled(false);
and if you made your custom toolbar (which i presume you did) then you can use the simplest way possible to do this:
toolbarTitle = (TextView)findViewById(R.id.toolbar_title);
toolbarSubTitle = (TextView)findViewById(R.id.toolbar_subtitle);
toolbarTitle.setText("Title");
toolbarSubTitle.setText("Subtitle");
Same goes for any other views you put in your toolbar. Hope it helps.
since I have no enough reputation to comment after the highest post, so I add here.
use '|' on linux platform to save disk space.
thx @Hariboo, add events/triggers/routints parameters
mysqldump -x -u [uname] -p[pass] -C --databases db_name --events --triggers --routines | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/ ' | awk '{ if (index($0,"GTID_PURGED")) { getline; while (length($0) > 0) { getline; } } else { print $0 } }' | grep -iv 'set @@' | trickle -u 10240 mysql -u username -p -h localhost DATA-BASE-NAME
some issues/tips:
Error: ......not exist when using LOCK TABLES
# --lock-all-tables,-x , this parameter is to keep data consistency because some transaction may still be working like schedule.
# also you need check and confirm: grant all privileges on *.* to root@"%" identified by "Passwd";
ERROR 2006 (HY000) at line 866: MySQL server has gone away mysqldump: Got errno 32 on write
# set this values big enough on destination mysql server, like: max_allowed_packet=1024*1024*20
# use compress parameter '-C'
# use trickle to limit network bandwidth while write data to destination server
ERROR 1419 (HY000) at line 32730: You do not have the SUPER privilege and binary logging is enabled (you might want to use the less safe log_bin_trust_function_creators variable)
# set SET GLOBAL log_bin_trust_function_creators = 1;
# or use super user import data
ERROR 1227 (42000) at line 138: Access denied; you need (at least one of) the SUPER privilege(s) for this operation mysqldump: Got errno 32 on write
# add sed/awk to avoid some privilege issues
hope this help!
Simple math.
double result = ((double)number) / 100.0;
Although you may want to use decimal
rather than double
: decimal vs double! - Which one should I use and when?
You can use the following command:
git reset -- my-file.txt
which will update both the working copy of my-file.txt
when added.
From docs and example it is not clear that classpath manipulation is not allowed.
<configuration>
<compilerArgs>
<arg>classpath=${basedir}/lib/bad.jar</arg>
</compilerArgs>
</configuration>
But see Java docs (also https://www.cis.upenn.edu/~bcpierce/courses/629/jdkdocs/tooldocs/solaris/javac.html)
-classpath path Specifies the path javac uses to look up classes needed to run javac or being referenced by other classes you are compiling. Overrides the default or the CLASSPATH environment variable if it is set.
Maybe it is possible to get current classpath and extend it,
see in maven, how output the classpath being used?
<properties>
<cpfile>cp.txt</cpfile>
</properties>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.9</version>
<executions>
<execution>
<id>build-classpath</id>
<phase>generate-sources</phase>
<goals>
<goal>build-classpath</goal>
</goals>
<configuration>
<outputFile>${cpfile}</outputFile>
</configuration>
</execution>
</executions>
</plugin>
Read file (Read a file into a Maven property)
<plugin>
<groupId>org.codehaus.gmaven</groupId>
<artifactId>gmaven-plugin</artifactId>
<version>1.4</version>
<executions>
<execution>
<phase>generate-resources</phase>
<goals>
<goal>execute</goal>
</goals>
<configuration>
<source>
def file = new File(project.properties.cpfile)
project.properties.cp = file.getText()
</source>
</configuration>
</execution>
</executions>
</plugin>
and finally
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<compilerArgs>
<arg>classpath=${cp}:${basedir}/lib/bad.jar</arg>
</compilerArgs>
</configuration>
</plugin>
Please note that the authors of seaborn
only want seaborn.heatmap
to work with categorical dataframes. It's not general.
If your index and columns are numeric and/or datetime values, this code will serve you well.
Matplotlib heat-mapping function pcolormesh
requires bins instead of indices, so there is some fancy code to build bins from your dataframe indices (even if your index isn't evenly spaced!).
The rest is simply np.meshgrid
and plt.pcolormesh
.
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
def conv_index_to_bins(index):
"""Calculate bins to contain the index values.
The start and end bin boundaries are linearly extrapolated from
the two first and last values. The middle bin boundaries are
midpoints.
Example 1: [0, 1] -> [-0.5, 0.5, 1.5]
Example 2: [0, 1, 4] -> [-0.5, 0.5, 2.5, 5.5]
Example 3: [4, 1, 0] -> [5.5, 2.5, 0.5, -0.5]"""
assert index.is_monotonic_increasing or index.is_monotonic_decreasing
# the beginning and end values are guessed from first and last two
start = index[0] - (index[1]-index[0])/2
end = index[-1] + (index[-1]-index[-2])/2
# the middle values are the midpoints
middle = pd.DataFrame({'m1': index[:-1], 'p1': index[1:]})
middle = middle['m1'] + (middle['p1']-middle['m1'])/2
if isinstance(index, pd.DatetimeIndex):
idx = pd.DatetimeIndex(middle).union([start,end])
elif isinstance(index, (pd.Float64Index,pd.RangeIndex,pd.Int64Index)):
idx = pd.Float64Index(middle).union([start,end])
else:
print('Warning: guessing what to do with index type %s' %
type(index))
idx = pd.Float64Index(middle).union([start,end])
return idx.sort_values(ascending=index.is_monotonic_increasing)
def calc_df_mesh(df):
"""Calculate the two-dimensional bins to hold the index and
column values."""
return np.meshgrid(conv_index_to_bins(df.index),
conv_index_to_bins(df.columns))
def heatmap(df):
"""Plot a heatmap of the dataframe values using the index and
columns"""
X,Y = calc_df_mesh(df)
c = plt.pcolormesh(X, Y, df.values.T)
plt.colorbar(c)
Call it using heatmap(df)
, and see it using plt.show()
.
I've found some success with this:
/^((ftp|http|https):\/\/)?www\.([A-z]+)\.([A-z]{2,})/
It's obviously not perfect but it handled my cases pretty well
dtList = dtList.Where(s => !string.IsNullOrWhiteSpace(s)).Distinct().ToList()
I assumed empty string and whitespace are like null. If not you can use IsNullOrEmpty
(allow whitespace), or s != null
If you simply want to see the column names this one line should provide it without changing any settings:
describe database.tablename;
However, if that doesn't work for your version of hive this code will provide it, but your default database will now be the database you are using:
use database;
describe tablename;
I will try to explain the results of all the commands you tried.
scala> val l = 1.0 :: 5.5 :: Nil
l: List[Double] = List(1.0, 5.5)
First of all, List
is a type alias to scala.collection.immutable.List
(defined in Predef.scala).
Using the List companion object is more straightforward way to instantiate a List
. Ex: List(1.0,5.5)
scala> l
res0: List[Double] = List(1.0, 5.5)
scala> l ::: List(2.2, 3.7)
res1: List[Double] = List(1.0, 5.5, 2.2, 3.7)
:::
returns a list resulting from the concatenation of the given list prefix and this list
The original List is NOT modified
scala> List(l) :+ 2.2
res2: List[Any] = List(List(1.0, 5.5), 2.2)
List(l)
is a List[List[Double]]
Definitely not what you want.
:+
returns a new list consisting of all elements of this list followed by elem.
The type is List[Any]
because it is the common superclass between List[Double]
and Double
scala> l
res3: List[Double] = List(1.0, 5.5)
l is left unmodified because no method on immutable.List
modified the List.
OpenSSH cannot use PKCS#12 files out of the box. As others suggested, you must extract the private key in PEM format which gets you from the land of OpenSSL to OpenSSH. Other solutions mentioned here don’t work for me. I use OS X 10.9 Mavericks (10.9.3 at the moment) with “prepackaged” utilities (OpenSSL 0.9.8y, OpenSSH 6.2p2).
First, extract a private key in PEM format which will be used directly by OpenSSH:
openssl pkcs12 -in filename.p12 -clcerts -nodes -nocerts | openssl rsa > ~/.ssh/id_rsa
I strongly suggest to encrypt the private key with password:
openssl pkcs12 -in filename.p12 -clcerts -nodes -nocerts | openssl rsa -passout 'pass:Passw0rd!' > ~/.ssh/id_rsa
Obviously, writing a plain-text password on command-line is not safe either, so you should delete the last command from history or just make sure it doesn’t get there. Different shells have different ways. You can prefix your command with space to prevent it from being saved to history in Bash and many other shells. Here is also how to delete the command from history in Bash:
history -d $(history | tail -n 2 | awk 'NR == 1 { print $1 }')
Alternatively, you can use different way to pass a private key password to OpenSSL - consult OpenSSL documentation for pass phrase arguments.
Then, create an OpenSSH public key which can be added to authorized_keys file:
ssh-keygen -y -f ~/.ssh/id_rsa > ~/.ssh/id_rsa.pub
If you want to place the cursor in a certain position on an EditText, you can use:
yourEditText.setSelection(position);
Additionally, there is the possibility to set the initial and final position, so that you programmatically select some text, this way:
yourEditText.setSelection(startPosition, endPosition);
Please note that setting the selection might be tricky since you can place the cursor before or after a character, the image below explains how to index works in this case:
So, if you want the cursor at the end of the text, just set it to yourEditText.length()
.
Simple Right Click and go to Properties Option of any project on your Existing application and see the Application option on Left menu and then click on Application option see target Framework to see current Framework version .
import datetime
Todays date
td=datetime.datetime.now().date()
Your birthdate
bd=datetime.date(1989,3,15)
Your age
age_years=int((td-bd).days /365.25)
Aside from personal design preferences, there are cases where one wants to make use of composite primary keys. Tables may have two or more fields that provide a unique combination, and not necessarily by way of foreign keys.
As an example, each US state has a set of unique Congressional districts. While many states may individually have a CD-5, there will never be more than one CD-5 in any of the 50 states, and vice versa. Therefore, creating an autonumber field for Massachusetts CD-5 would be redundant.
If the database drives a dynamic web page, writing code to query on a two-field combination could be much simpler than extracting/resubmitting an autonumbered key.
So while I'm not answering the original question, I certainly appreciate Adam's direct answer.
Wget 404 error also always happens if you want to download the pages from Wordpress-website by typing
wget -r http://somewebsite.com
If this website is built using Wordpress you'll get such an error:
ERROR 404: Not Found.
There's no way to mirror Wordpress-website because the website content is stored in the database and wget is not able to grab .php files. That's why you get Wget 404 error.
I know it's not this question's case, because Sam only wants to download a single picture, but it can be helpful for others.
If you want statically make columns not sortable. You can do this way
.slice() isn't always better. In my case, with jQuery 1.7 in Chrome 36, .slice(0, 20) failed with error:
RangeError: Maximum call stack size exceeded
I found that :lt(20) worked without error in this case. I had probably tens of thousands of matching elements.
It's important to note that the order of parameters is actually important to spring. The BindingResult needs to come right after the Form that is being validated. Likewise, the [optional] Model parameter needs to come after the BindingResult. Example:
Valid:
@RequestMapping(value = "/entry/updateQuantity", method = RequestMethod.POST)
public String updateEntryQuantity(@Valid final UpdateQuantityForm form,
final BindingResult bindingResult,
@RequestParam("pk") final long pk,
final Model model) {
}
Not Valid:
RequestMapping(value = "/entry/updateQuantity", method = RequestMethod.POST)
public String updateEntryQuantity(@Valid final UpdateQuantityForm form,
@RequestParam("pk") final long pk,
final BindingResult bindingResult,
final Model model) {
}
To do anything other than declare a pointer to an object, you need the full definition.
The best solution is to move the implementation in a separate file.
If you must keep this in a header, move the definition after both declarations:
class tile_tree_apple;
class tile_tree : public tile
{
public:
tile onDestroy();
tile tick();
void onCreate();
};
class tile_tree_apple : public tile
{
public:
tile onDestroy();
tile tick();
void onCreate();
tile onUse();
};
tile tile_tree::onDestroy() {return *new tile_grass;};
tile tile_tree::tick() {if (rand()%20==0) return *new tile_tree_apple;};
void tile_tree::onCreate() {health=rand()%5+4; type=TILET_TREE;};
tile tile_tree_apple::onDestroy() {return *new tile_grass;};
tile tile_tree_apple::tick() {if (rand()%20==0) return *new tile_tree;};
void tile_tree_apple::onCreate() {health=rand()%5+4; type=TILET_TREE_APPLE;};
tile tile_tree_apple::onUse() {return *new tile_tree;};
Important
You have memory leaks:
tile tile_tree::onDestroy() {return *new tile_grass;};
will create an object on the heap, which you can't destroy afterwards, unless you do some ugly hacking. Also, your object will be sliced. Don't do this, return a pointer.
if you are using django use forloop.counter
instead of loop.counter
<ul>
{% for user in userlist %}
<li>
{{ user }} {{forloop.counter}}
</li>
{% if forloop.counter == 1 %}
This is the First user
{% endif %}
{% endfor %}
</ul>
Yes there is.
But OCR is very vast. I know an Android application that has an OCR feature, but that might not be the kind of OCR you are looking after.
This open-source application is called Aedict, and it does OCR on handwritten Japanese characters. It is not that slow.
If it is not what you are looking for, please precise which kind of characters, and which data input (image or X-Y touch history).
when a derived class object is assigned to a base class object, additional attributes of a derived class object are sliced off (discard) form the base class object.
class Base {
int x;
};
class Derived : public Base {
int z;
};
int main()
{
Derived d;
Base b = d; // Object Slicing, z of d is sliced off
}
Padding is the space inside the border, between the border and the actual view's content. Note that padding goes completely around the content: there is padding on the top, bottom, right and left sides (which can be independent).
Margins are the spaces outside the border, between the border and the other elements next to this view. In the image, the margin is the grey area outside the entire object. Note that, like the padding, the margin goes completely around the content: there are margins on the top, bottom, right, and left sides.
An image says more than 1000 words (extracted from Margin Vs Padding - CSS Properties):
Angular 9:
forkJoin([
this.http.get().pipe(
catchError((error) => {
return of([]);
})
),
this.http.get().pipe(
catchError((error) => {
return of([]);
})
),
Well that's a very interesting question. I would divide the two constants in your question according to their type. int MAX_COUNT
is a constant of primitive type while Logger log
is a non-primitive type.
When we are making use of a constant of a primitive types, we are mutating the constant only once in our code public static final in MAX_COUNT = 10
and we are just accessing the value of the constant elsewhere for(int i = 0; i<MAX_COUNT; i++)
. This is the reason we are comfortable with using this convention.
While in the case of non-primitive types, although, we initialize the constant in only one place private static final Logger log = Logger.getLogger(MyClass.class);
, we are expected to mutate or call a method on this constant elsewhere log.debug("Problem")
. We guys don't like to put a dot operator after the capital characters. After all we have to put a function name after the dot operator which is surely going to be a camel-case name. That's why LOG.debug("Problem")
would look awkward.
Same is the case with String
types. We are usually not mutating or calling a method on a String
constant in our code and that's why we use the capital naming convention for a String
type object.
def valid = pointAddress.findAll { a ->
validPointTypes.any { a.contains(it) }
}
Should do it
Calling this function has worked for me:
VOID Win32ForceSettingsChange()
{
DWORD dwReturnValue;
::SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, (LPARAM) "Environment", SMTO_ABORTIFHUNG, 5000, &dwReturnValue);
}
Here is what worked for me:
If you are installing on a 64-bit machine, make sure the application properties under the Build tab have "Any CPU" as the platform target, and unselect the check box for "Prefer 32-bit" if you have the option. Crystal is very touchy about 32/64 bit assemblies, and makes some pretty counterintuitive assumptions which are very difficult to troubleshoot.
Simple way of solving this issue is save the both entity. first save the child entity and then save the parent entity. Because parent entity is depend on child entity for the foreign key value.
Below simple exam of one to one relationship
insert into Department (name, numOfemp, Depno) values (?, ?, ?)
Hibernate: insert into Employee (SSN, dep_Depno, firstName, lastName, middleName, empno) values (?, ?, ?, ?, ?, ?)
Session session=sf.openSession();
session.beginTransaction();
session.save(dep);
session.save(emp);
In this case you use -1.
I think this workaround should work in IE, Chrome, Firefox, Safari, Opera -
Using jQuery :
<xmp id="unique_id" style="display:none;">
Some plain text
Both type of quotes : " ' " And ' " '
JS Code : alert("Hello World");
HTML Code : <div class="some_class"></div>
</xmp>
<script>
alert($('#unique_id').html());
</script>
Using Pure Javascript :
<xmp id="unique_id" style="display:none;">
Some plain text
Both type of quotes : " ' " And ' " '
JS Code : alert("Hello World");
HTML Code : <div class="some_class"></div>
</xmp>
<script>
alert(document.getElementById('unique_id').innerHTML);
</script>
Cheers!!
Use a non-consuming regular expression.
The typical (i.e. Perl/Java) notation is:
(?=
expr)
This means "match expr but after that continue matching at the original match-point."
You can do as many of these as you want, and this will be an "and." Example:
(?=match this expression)(?=match this too)(?=oh, and this)
You can even add capture groups inside the non-consuming expressions if you need to save some of the data therein.
Just add the onclick-attribute:
<div class="drill_cursor" onclick='alert("youClickedMe!");'>
....
</div>
It's javascript, but it's automatically bound using an html-attribute instead of manually binding it within <script>
tags - maybe it does what you want.
While it might be good enough for very small projects or test pages, you should definitly consider using addEventListener
(as pointed out by other answers), if you expect the code to grow and stay maintainable.
I used this solution.
If you have a nested state like this:
this.state = {
formInputs:{
friendName:{
value:'',
isValid:false,
errorMsg:''
},
friendEmail:{
value:'',
isValid:false,
errorMsg:''
}
}
}
you can declare the handleChange function that copy current status and re-assigns it with changed values
handleChange(el) {
let inputName = el.target.name;
let inputValue = el.target.value;
let statusCopy = Object.assign({}, this.state);
statusCopy.formInputs[inputName].value = inputValue;
this.setState(statusCopy);
}
here the html with the event listener. Make sure to use the same name used into state object (in this case 'friendName')
<input type="text" onChange={this.handleChange} " name="friendName" />
awalker's answer helped me a lot!
I've changed his example to work with Django 1.3, using get_readonly_fields.
Usually you should declare something like this in app/admin.py
:
class ItemAdmin(admin.ModelAdmin):
...
readonly_fields = ('url',)
I've adapted in this way:
# In the admin.py file
class ItemAdmin(admin.ModelAdmin):
...
def get_readonly_fields(self, request, obj=None):
if obj:
return ['url']
else:
return []
And it works fine. Now if you add an Item, the url
field is read-write, but on change it becomes read-only.
/usr/local/ssl/openssl.cnf
This is a local installation. You downloaded and built OpenSSL taking the default prefix
, of you configured with ./config --prefix=/usr/local/ssl
or ./config --openssldir=/usr/local/ssl
.
You will use this if you use the OpenSSL in /usr/local/ssl/bin
. That is, /usr/local/ssl/openssl.cnf
will be used when you issue:
/usr/local/ssl/bin/openssl s_client -connect localhost:443 -tls1 -servername localhost
/usr/lib/ssl/openssl.cnf
This is where Ubuntu places openssl.cnf
for the OpenSSL they provide.
You will use this if you use the OpenSSL in /usr/bin
. That is, /usr/lib/ssl/openssl.cnf
will be used when you issue:
openssl s_client -connect localhost:443 -tls1 -servername localhost
/etc/ssl/openssl.cnf
I don't know when this is used. The stuff in /etc/ssl
is usually certificates and private keys, and it sometimes contains a copy of openssl.cnf
. But I've never seen it used for anything.
Which is the main/correct one that I should use to make changes?
From the sounds of it, you should probably add the engine to /usr/lib/ssl/openssl.cnf
. That ensures most "off the shelf" gear will use the new engine.
After you do that, add it to /usr/local/ssl/openssl.cnf
also because copy/paste is easy.
Here's how to see which openssl.cnf
directory is associated with a OpenSSL installation. The library and programs look for openssl.cnf
in OPENSSLDIR
. OPENSSLDIR
is a configure option, and its set with --openssldir
.
I'm on a MacBook with 3 different OpenSSL's (Apple's, MacPort's and the one I build):
# Apple
$ /usr/bin/openssl version -a | grep OPENSSLDIR
OPENSSLDIR: "/System/Library/OpenSSL"
# MacPorts
$ /opt/local/bin/openssl version -a | grep OPENSSLDIR
OPENSSLDIR: "/opt/local/etc/openssl"
# My build of OpenSSL
$ openssl version -a | grep OPENSSLDIR
OPENSSLDIR: "/usr/local/ssl/darwin"
I have an Ubuntu system and I have installed openssl.
Just bike shedding, but be careful of Ubuntu's version of OpenSSL. It disables TLSv1.1 and TLSv1.2, so you will only have clients capable of older cipher suites; and you will not be able to use newer ciphers like AES/CTR (to replace RC4) and elliptic curve gear (like ECDHE_ECDSA_*
and ECDHE_RSA_*
). See Ubuntu 12.04 LTS: OpenSSL downlevel version is 1.0.0, and does not support TLS 1.2 in Launchpad.
EDIT: Ubuntu enabled TLS 1.1 and TLS 1.2 recently. See Comment 17 on the bug report.
There is no such functionality in jQuery. Use JSON.stringify
or alternatively any jQuery plugin with similar functionality (e.g jquery-json).
To limit what you run as sudo, you could run
python non_sudo_stuff.py
sudo -E python -c "import os; os.system('sudo echo 1')"
without needing to store the password. The -E
parameter passes your current user's env to the process. Note that your shell will have sudo priveleges after the second command, so use with caution!
I would go with a simple regex which will check that days doesn't have more than 31 days and months no more than 12. Something like:
(0?[1-9]|[12][0-9]|3[01])-(0?[1-9]|1[012])-((18|19|20|21)\\d\\d)
This is the format "dd-MM-yyyy". You can tweak it to your needs (for example take off the ? to make the leading 0 required - now its optional), and then use a custom logic to cut down to the specific rules like leap years February number of days case, and other months number of days cases. See the DateChecker code below.
I am choosing this approach since I tested that this is the best one when performance is taken into account. I checked this (1st) approach versus 2nd approach of validating a date against a regex that takes care of the other use cases, and 3rd approach of using the same simple regex above in combination with SimpleDateFormat.parse(date).
The 1st approach was 4 times faster than the 2nd approach, and 8 times faster than the 3rd approach. See the self contained date checker and performance tester main class at the bottom.
One thing that I left unchecked is the joda time approach(s). (The more efficient date/time library).
Date checker code:
class DateChecker {
private Matcher matcher;
private Pattern pattern;
public DateChecker(String regex) {
pattern = Pattern.compile(regex);
}
/**
* Checks if the date format is a valid.
* Uses the regex pattern to match the date first.
* Than additionally checks are performed on the boundaries of the days taken the month into account (leap years are covered).
*
* @param date the date that needs to be checked.
* @return if the date is of an valid format or not.
*/
public boolean check(final String date) {
matcher = pattern.matcher(date);
if (matcher.matches()) {
matcher.reset();
if (matcher.find()) {
int day = Integer.parseInt(matcher.group(1));
int month = Integer.parseInt(matcher.group(2));
int year = Integer.parseInt(matcher.group(3));
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: return day < 32;
case 4:
case 6:
case 9:
case 11: return day < 31;
case 2:
int modulo100 = year % 100;
//http://science.howstuffworks.com/science-vs-myth/everyday-myths/question50.htm
if ((modulo100 == 0 && year % 400 == 0) || (modulo100 != 0 && year % LEAP_STEP == 0)) {
//its a leap year
return day < 30;
} else {
return day < 29;
}
default:
break;
}
}
}
return false;
}
public String getRegex() {
return pattern.pattern();
}
}
Date checking/testing and performance testing:
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Tester {
private static final String[] validDateStrings = new String[]{
"1-1-2000", //leading 0s for day and month optional
"01-1-2000", //leading 0 for month only optional
"1-01-2000", //leading 0 for day only optional
"01-01-1800", //first accepted date
"31-12-2199", //last accepted date
"31-01-2000", //January has 31 days
"31-03-2000", //March has 31 days
"31-05-2000", //May has 31 days
"31-07-2000", //July has 31 days
"31-08-2000", //August has 31 days
"31-10-2000", //October has 31 days
"31-12-2000", //December has 31 days
"30-04-2000", //April has 30 days
"30-06-2000", //June has 30 days
"30-09-2000", //September has 30 days
"30-11-2000", //November has 30 days
};
private static final String[] invalidDateStrings = new String[]{
"00-01-2000", //there is no 0-th day
"01-00-2000", //there is no 0-th month
"31-12-1799", //out of lower boundary date
"01-01-2200", //out of high boundary date
"32-01-2000", //January doesn't have 32 days
"32-03-2000", //March doesn't have 32 days
"32-05-2000", //May doesn't have 32 days
"32-07-2000", //July doesn't have 32 days
"32-08-2000", //August doesn't have 32 days
"32-10-2000", //October doesn't have 32 days
"32-12-2000", //December doesn't have 32 days
"31-04-2000", //April doesn't have 31 days
"31-06-2000", //June doesn't have 31 days
"31-09-2000", //September doesn't have 31 days
"31-11-2000", //November doesn't have 31 days
"001-02-2000", //SimpleDateFormat valid date (day with leading 0s) even with lenient set to false
"1-0002-2000", //SimpleDateFormat valid date (month with leading 0s) even with lenient set to false
"01-02-0003", //SimpleDateFormat valid date (year with leading 0s) even with lenient set to false
"01.01-2000", //. invalid separator between day and month
"01-01.2000", //. invalid separator between month and year
"01/01-2000", /// invalid separator between day and month
"01-01/2000", /// invalid separator between month and year
"01_01-2000", //_ invalid separator between day and month
"01-01_2000", //_ invalid separator between month and year
"01-01-2000-12345", //only whole string should be matched
"01-13-2000", //month bigger than 13
};
/**
* These constants will be used to generate the valid and invalid boundary dates for the leap years. (For no leap year, Feb. 28 valid and Feb. 29 invalid; for a leap year Feb. 29 valid and Feb. 30 invalid)
*/
private static final int LEAP_STEP = 4;
private static final int YEAR_START = 1800;
private static final int YEAR_END = 2199;
/**
* This date regex will find matches for valid dates between 1800 and 2199 in the format of "dd-MM-yyyy".
* The leading 0 is optional.
*/
private static final String DATE_REGEX = "((0?[1-9]|[12][0-9]|3[01])-(0?[13578]|1[02])-(18|19|20|21)[0-9]{2})|((0?[1-9]|[12][0-9]|30)-(0?[469]|11)-(18|19|20|21)[0-9]{2})|((0?[1-9]|1[0-9]|2[0-8])-(0?2)-(18|19|20|21)[0-9]{2})|(29-(0?2)-(((18|19|20|21)(04|08|[2468][048]|[13579][26]))|2000))";
/**
* This date regex is similar to the first one, but with the difference of matching only the whole string. So "01-01-2000-12345" won't pass with a match.
* Keep in mind that String.matches tries to match only the whole string.
*/
private static final String DATE_REGEX_ONLY_WHOLE_STRING = "^" + DATE_REGEX + "$";
/**
* The simple regex (without checking for 31 day months and leap years):
*/
private static final String DATE_REGEX_SIMPLE = "(0?[1-9]|[12][0-9]|3[01])-(0?[1-9]|1[012])-((18|19|20|21)\\d\\d)";
/**
* This date regex is similar to the first one, but with the difference of matching only the whole string. So "01-01-2000-12345" won't pass with a match.
*/
private static final String DATE_REGEX_SIMPLE_ONLY_WHOLE_STRING = "^" + DATE_REGEX_SIMPLE + "$";
private static final SimpleDateFormat SDF = new SimpleDateFormat("dd-MM-yyyy");
static {
SDF.setLenient(false);
}
private static final DateChecker dateValidatorSimple = new DateChecker(DATE_REGEX_SIMPLE);
private static final DateChecker dateValidatorSimpleOnlyWholeString = new DateChecker(DATE_REGEX_SIMPLE_ONLY_WHOLE_STRING);
/**
* @param args
*/
public static void main(String[] args) {
DateTimeStatistics dateTimeStatistics = new DateTimeStatistics();
boolean shouldMatch = true;
for (int i = 0; i < validDateStrings.length; i++) {
String validDate = validDateStrings[i];
matchAssertAndPopulateTimes(
dateTimeStatistics,
shouldMatch, validDate);
}
shouldMatch = false;
for (int i = 0; i < invalidDateStrings.length; i++) {
String invalidDate = invalidDateStrings[i];
matchAssertAndPopulateTimes(dateTimeStatistics,
shouldMatch, invalidDate);
}
for (int year = YEAR_START; year < (YEAR_END + 1); year++) {
FebruaryBoundaryDates februaryBoundaryDates = createValidAndInvalidFebruaryBoundaryDateStringsFromYear(year);
shouldMatch = true;
matchAssertAndPopulateTimes(dateTimeStatistics,
shouldMatch, februaryBoundaryDates.getValidFebruaryBoundaryDateString());
shouldMatch = false;
matchAssertAndPopulateTimes(dateTimeStatistics,
shouldMatch, februaryBoundaryDates.getInvalidFebruaryBoundaryDateString());
}
dateTimeStatistics.calculateAvarageTimesAndPrint();
}
private static void matchAssertAndPopulateTimes(
DateTimeStatistics dateTimeStatistics,
boolean shouldMatch, String date) {
dateTimeStatistics.addDate(date);
matchAndPopulateTimeToMatch(date, DATE_REGEX, shouldMatch, dateTimeStatistics.getTimesTakenWithDateRegex());
matchAndPopulateTimeToMatch(date, DATE_REGEX_ONLY_WHOLE_STRING, shouldMatch, dateTimeStatistics.getTimesTakenWithDateRegexOnlyWholeString());
boolean matchesSimpleDateFormat = matchWithSimpleDateFormatAndPopulateTimeToMatchAndReturnMatches(date, dateTimeStatistics.getTimesTakenWithSimpleDateFormatParse());
matchAndPopulateTimeToMatchAndReturnMatchesAndCheck(
dateTimeStatistics.getTimesTakenWithDateRegexSimple(), shouldMatch,
date, matchesSimpleDateFormat, DATE_REGEX_SIMPLE);
matchAndPopulateTimeToMatchAndReturnMatchesAndCheck(
dateTimeStatistics.getTimesTakenWithDateRegexSimpleOnlyWholeString(), shouldMatch,
date, matchesSimpleDateFormat, DATE_REGEX_SIMPLE_ONLY_WHOLE_STRING);
matchAndPopulateTimeToMatch(date, dateValidatorSimple, shouldMatch, dateTimeStatistics.getTimesTakenWithdateValidatorSimple());
matchAndPopulateTimeToMatch(date, dateValidatorSimpleOnlyWholeString, shouldMatch, dateTimeStatistics.getTimesTakenWithdateValidatorSimpleOnlyWholeString());
}
private static void matchAndPopulateTimeToMatchAndReturnMatchesAndCheck(
List<Long> times,
boolean shouldMatch, String date, boolean matchesSimpleDateFormat, String regex) {
boolean matchesFromRegex = matchAndPopulateTimeToMatchAndReturnMatches(date, regex, times);
assert !((matchesSimpleDateFormat && matchesFromRegex) ^ shouldMatch) : "Parsing with SimpleDateFormat and date:" + date + "\nregex:" + regex + "\nshouldMatch:" + shouldMatch;
}
private static void matchAndPopulateTimeToMatch(String date, String regex, boolean shouldMatch, List<Long> times) {
boolean matches = matchAndPopulateTimeToMatchAndReturnMatches(date, regex, times);
assert !(matches ^ shouldMatch) : "date:" + date + "\nregex:" + regex + "\nshouldMatch:" + shouldMatch;
}
private static void matchAndPopulateTimeToMatch(String date, DateChecker dateValidator, boolean shouldMatch, List<Long> times) {
long timestampStart;
long timestampEnd;
boolean matches;
timestampStart = System.nanoTime();
matches = dateValidator.check(date);
timestampEnd = System.nanoTime();
times.add(timestampEnd - timestampStart);
assert !(matches ^ shouldMatch) : "date:" + date + "\ndateValidator with regex:" + dateValidator.getRegex() + "\nshouldMatch:" + shouldMatch;
}
private static boolean matchAndPopulateTimeToMatchAndReturnMatches(String date, String regex, List<Long> times) {
long timestampStart;
long timestampEnd;
boolean matches;
timestampStart = System.nanoTime();
matches = date.matches(regex);
timestampEnd = System.nanoTime();
times.add(timestampEnd - timestampStart);
return matches;
}
private static boolean matchWithSimpleDateFormatAndPopulateTimeToMatchAndReturnMatches(String date, List<Long> times) {
long timestampStart;
long timestampEnd;
boolean matches = true;
timestampStart = System.nanoTime();
try {
SDF.parse(date);
} catch (ParseException e) {
matches = false;
} finally {
timestampEnd = System.nanoTime();
times.add(timestampEnd - timestampStart);
}
return matches;
}
private static FebruaryBoundaryDates createValidAndInvalidFebruaryBoundaryDateStringsFromYear(int year) {
FebruaryBoundaryDates februaryBoundaryDates;
int modulo100 = year % 100;
//http://science.howstuffworks.com/science-vs-myth/everyday-myths/question50.htm
if ((modulo100 == 0 && year % 400 == 0) || (modulo100 != 0 && year % LEAP_STEP == 0)) {
februaryBoundaryDates = new FebruaryBoundaryDates(
createFebruaryDateFromDayAndYear(29, year),
createFebruaryDateFromDayAndYear(30, year)
);
} else {
februaryBoundaryDates = new FebruaryBoundaryDates(
createFebruaryDateFromDayAndYear(28, year),
createFebruaryDateFromDayAndYear(29, year)
);
}
return februaryBoundaryDates;
}
private static String createFebruaryDateFromDayAndYear(int day, int year) {
return String.format("%d-02-%d", day, year);
}
static class FebruaryBoundaryDates {
private String validFebruaryBoundaryDateString;
String invalidFebruaryBoundaryDateString;
public FebruaryBoundaryDates(String validFebruaryBoundaryDateString,
String invalidFebruaryBoundaryDateString) {
super();
this.validFebruaryBoundaryDateString = validFebruaryBoundaryDateString;
this.invalidFebruaryBoundaryDateString = invalidFebruaryBoundaryDateString;
}
public String getValidFebruaryBoundaryDateString() {
return validFebruaryBoundaryDateString;
}
public void setValidFebruaryBoundaryDateString(
String validFebruaryBoundaryDateString) {
this.validFebruaryBoundaryDateString = validFebruaryBoundaryDateString;
}
public String getInvalidFebruaryBoundaryDateString() {
return invalidFebruaryBoundaryDateString;
}
public void setInvalidFebruaryBoundaryDateString(
String invalidFebruaryBoundaryDateString) {
this.invalidFebruaryBoundaryDateString = invalidFebruaryBoundaryDateString;
}
}
static class DateTimeStatistics {
private List<String> dates = new ArrayList<String>();
private List<Long> timesTakenWithDateRegex = new ArrayList<Long>();
private List<Long> timesTakenWithDateRegexOnlyWholeString = new ArrayList<Long>();
private List<Long> timesTakenWithDateRegexSimple = new ArrayList<Long>();
private List<Long> timesTakenWithDateRegexSimpleOnlyWholeString = new ArrayList<Long>();
private List<Long> timesTakenWithSimpleDateFormatParse = new ArrayList<Long>();
private List<Long> timesTakenWithdateValidatorSimple = new ArrayList<Long>();
private List<Long> timesTakenWithdateValidatorSimpleOnlyWholeString = new ArrayList<Long>();
public List<String> getDates() {
return dates;
}
public List<Long> getTimesTakenWithDateRegex() {
return timesTakenWithDateRegex;
}
public List<Long> getTimesTakenWithDateRegexOnlyWholeString() {
return timesTakenWithDateRegexOnlyWholeString;
}
public List<Long> getTimesTakenWithDateRegexSimple() {
return timesTakenWithDateRegexSimple;
}
public List<Long> getTimesTakenWithDateRegexSimpleOnlyWholeString() {
return timesTakenWithDateRegexSimpleOnlyWholeString;
}
public List<Long> getTimesTakenWithSimpleDateFormatParse() {
return timesTakenWithSimpleDateFormatParse;
}
public List<Long> getTimesTakenWithdateValidatorSimple() {
return timesTakenWithdateValidatorSimple;
}
public List<Long> getTimesTakenWithdateValidatorSimpleOnlyWholeString() {
return timesTakenWithdateValidatorSimpleOnlyWholeString;
}
public void addDate(String date) {
dates.add(date);
}
public void addTimesTakenWithDateRegex(long time) {
timesTakenWithDateRegex.add(time);
}
public void addTimesTakenWithDateRegexOnlyWholeString(long time) {
timesTakenWithDateRegexOnlyWholeString.add(time);
}
public void addTimesTakenWithDateRegexSimple(long time) {
timesTakenWithDateRegexSimple.add(time);
}
public void addTimesTakenWithDateRegexSimpleOnlyWholeString(long time) {
timesTakenWithDateRegexSimpleOnlyWholeString.add(time);
}
public void addTimesTakenWithSimpleDateFormatParse(long time) {
timesTakenWithSimpleDateFormatParse.add(time);
}
public void addTimesTakenWithdateValidatorSimple(long time) {
timesTakenWithdateValidatorSimple.add(time);
}
public void addTimesTakenWithdateValidatorSimpleOnlyWholeString(long time) {
timesTakenWithdateValidatorSimpleOnlyWholeString.add(time);
}
private void calculateAvarageTimesAndPrint() {
long[] sumOfTimes = new long[7];
int timesSize = timesTakenWithDateRegex.size();
for (int i = 0; i < timesSize; i++) {
sumOfTimes[0] += timesTakenWithDateRegex.get(i);
sumOfTimes[1] += timesTakenWithDateRegexOnlyWholeString.get(i);
sumOfTimes[2] += timesTakenWithDateRegexSimple.get(i);
sumOfTimes[3] += timesTakenWithDateRegexSimpleOnlyWholeString.get(i);
sumOfTimes[4] += timesTakenWithSimpleDateFormatParse.get(i);
sumOfTimes[5] += timesTakenWithdateValidatorSimple.get(i);
sumOfTimes[6] += timesTakenWithdateValidatorSimpleOnlyWholeString.get(i);
}
System.out.println("AVG from timesTakenWithDateRegex (in nanoseconds):" + (double) sumOfTimes[0] / timesSize);
System.out.println("AVG from timesTakenWithDateRegexOnlyWholeString (in nanoseconds):" + (double) sumOfTimes[1] / timesSize);
System.out.println("AVG from timesTakenWithDateRegexSimple (in nanoseconds):" + (double) sumOfTimes[2] / timesSize);
System.out.println("AVG from timesTakenWithDateRegexSimpleOnlyWholeString (in nanoseconds):" + (double) sumOfTimes[3] / timesSize);
System.out.println("AVG from timesTakenWithSimpleDateFormatParse (in nanoseconds):" + (double) sumOfTimes[4] / timesSize);
System.out.println("AVG from timesTakenWithDateRegexSimple + timesTakenWithSimpleDateFormatParse (in nanoseconds):" + (double) (sumOfTimes[2] + sumOfTimes[4]) / timesSize);
System.out.println("AVG from timesTakenWithDateRegexSimpleOnlyWholeString + timesTakenWithSimpleDateFormatParse (in nanoseconds):" + (double) (sumOfTimes[3] + sumOfTimes[4]) / timesSize);
System.out.println("AVG from timesTakenWithdateValidatorSimple (in nanoseconds):" + (double) sumOfTimes[5] / timesSize);
System.out.println("AVG from timesTakenWithdateValidatorSimpleOnlyWholeString (in nanoseconds):" + (double) sumOfTimes[6] / timesSize);
}
}
static class DateChecker {
private Matcher matcher;
private Pattern pattern;
public DateChecker(String regex) {
pattern = Pattern.compile(regex);
}
/**
* Checks if the date format is a valid.
* Uses the regex pattern to match the date first.
* Than additionally checks are performed on the boundaries of the days taken the month into account (leap years are covered).
*
* @param date the date that needs to be checked.
* @return if the date is of an valid format or not.
*/
public boolean check(final String date) {
matcher = pattern.matcher(date);
if (matcher.matches()) {
matcher.reset();
if (matcher.find()) {
int day = Integer.parseInt(matcher.group(1));
int month = Integer.parseInt(matcher.group(2));
int year = Integer.parseInt(matcher.group(3));
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: return day < 32;
case 4:
case 6:
case 9:
case 11: return day < 31;
case 2:
int modulo100 = year % 100;
//http://science.howstuffworks.com/science-vs-myth/everyday-myths/question50.htm
if ((modulo100 == 0 && year % 400 == 0) || (modulo100 != 0 && year % LEAP_STEP == 0)) {
//its a leap year
return day < 30;
} else {
return day < 29;
}
default:
break;
}
}
}
return false;
}
public String getRegex() {
return pattern.pattern();
}
}
}
Some useful notes:
- to enable the assertions (assert checks) you need to use -ea argument when running the tester. (In eclipse this is done by editing the Run/Debug configuration -> Arguments tab -> VM Arguments -> insert "-ea"
- the regex above is bounded to years 1800 to 2199
- you don't need to use ^ at the beginning and $ at the end to match only the whole date string. The String.matches takes care of that.
- make sure u check the valid and invalid cases and change them according the rules that you have.
- the "only whole string" version of each regex gives the same speed as the "normal" version (the one without ^ and $). If you see performance differences this is because java "gets used" to processing the same instructions so the time lowers. If you switch the lines where the "normal" and the "only whole string" version execute, you will see this proven.
Hope this helps someone!
Cheers,
Despot
I got this message after removing two files from the SRC library, and when I brought them back I kept seeing this error message.
My solution was: Restart Eclipse. Since then I haven't seen this message again :-)
Be aware "document:keypress" is deprecated. We should use document:keydown instead.
Link: https://developer.mozilla.org/fr/docs/Web/API/Document/keypress_event
It seems that onkeypress and onkeydown do the same (whithin the small difference of shortcut keys already mentioned above).
You can try this:
<textarea type="text" onkeypress="this.value=this.value + 'onkeypress '"></textarea>
<textarea type="text" onkeydown="this.value=this.value + 'onkeydown '" ></textarea>
<textarea type="text" onkeyup="this.value=this.value + 'onkeyup '" ></textarea>
And you will see that the events onkeypress and onkeydown are both triggered while the key is pressed and not when the key is pressed.
The difference is that the event is triggered not once but many times (as long as you hold the key pressed). Be aware of that and handle them accordingly.
Moreover, mousemove
events are not triggered if you perform drag'n'drop over a browser window.
To track mouse coordinates during drag'n'drop you should attach handler for document.ondragover
event and use it's originalEvent property.
Example:
var globalDragOver = function (e)
{
var original = e.originalEvent;
if (original)
{
window.x = original.pageX;
window.y = original.pageY;
}
}
This is not an answer to the original question, but rather an extension of the accepted answer by @Samuel Jack. I did the following in my own application, and was in awe of the elegance of Samuel's solution. It is very clean, and very reusable, as it can be used on any control, not just the TextBox
. I thought this should be shared with the community.
If you have a Window with a thousand TextBoxes
that all require to update the Binding Source on Enter, you can attach this behaviour to all of them by including the XAML below into your Window
Resources
rather than attaching it to each TextBox. First you must implement the attached behaviour as per Samuel's post, of course.
<Window.Resources>
<Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
<Style.Setters>
<Setter Property="b:InputBindingsManager.UpdatePropertySourceWhenEnterPressed" Value="TextBox.Text"/>
</Style.Setters>
</Style>
</Window.Resources>
You can always limit the scope, if needed, by putting the Style into the Resources of one of the Window's child elements (i.e. a Grid
) that contains the target TextBoxes.
I just tried on windows XP, it worked
local computer: sc \\. delete [service-name]
Deleting services in Windows Server 2003
We can use sc.exe in the Windows Server 2003 to control services, create services and delete services. Since some people thought they must directly modify the registry to delete a service, I would like to share how to use sc.exe to delete a service without directly modifying the registry so that decreased the possibility for system failures.
To delete a service:
Click “start“ - “run“, and then enter “cmd“ to open Microsoft Command Console.
Enter command:
sc servername delete servicename
For instance, sc \\dc delete myservice
(Note: In this example, dc is my Domain Controller Server name, which is not the local machine, myservice is the name of the service I want to delete on the DC server.)
Below is the official help of all sc functions:
DESCRIPTION:
SC is a command line program used for communicating with the
NT Service Controller and services.
USAGE:
sc
function hasCookie(cookieName){
return document.cookie.split(';')
.map(entry => entry.split('='))
.some(([name, value]) => (name.trim() === cookieName) && !!value);
}
Note: The author wanted the function to return false if the cookie is empty i.e. cookie=;
this is achieved with the && !!value
condition. Remove it if you consider an empty cookie is still an existing cookie…
The process of using SCP to copy files from a local machine to an AWS EC2 Linux instance is covered step-by-step (including the points mentioned below) in this video.
To correct this particular issue with using SCP:
You need to specify the correct Linux user. From Amazon:
Your private key must not be publicly visible. Run the following command so that only the root user can read the file.
chmod 400 /path/to/yourKeyFile.pem
little few change in your code :
TextView tv = (TextView)findViewById(R.id.charCounts);
textMessage = (EditText)findViewById(R.id.textMessage);
textMessage.addTextChangedListener(new TextWatcher(){
public void afterTextChanged(Editable s) {
tv.setText(String.valueOf(s.toString().length()));
}
public void beforeTextChanged(CharSequence s, int start, int count, int after){}
public void onTextChanged(CharSequence s, int start, int before, int count){}
});
From the man page:
search, -S text|/text/ Perform a substring search of formula names for text. If text is surrounded with slashes, then it is interpreted as a regular expression. If no search term is given, all available formula are displayed.
For your purposes, brew search
will suffice.
what is a SID and Service name
please look into oracle's documentation at https://docs.oracle.com/cd/B19306_01/network.102/b14212/concepts.htm
In case if the above link is not accessable in future, At the time time of writing this answer, the above link will direct you to, "Database Service and Database Instance Identification" topic in Connectivity Concepts chapter of "Database Net Services Administrator's Guide". This guide is published by oracle as part of "Oracle Database Online Documentation, 10g Release 2 (10.2)"
When I have to use one or another? Why do I need two of them?
Consider below mapping in a RAC Environment,
SID SERVICE_NAME
bob1 bob
bob2 bob
bob3 bob
bob4 bob
if load balancing is configured, the listener will 'balance' the workload across all four SIDs. Even if load balancing is configured, you can connect to bob1 all the time if you want to by using the SID instead of SERVICE_NAME.
Please refer, https://community.oracle.com/thread/4049517
Turned out to be an issue with Webpack just not resolving an import - talk about horrible horrible error messages :(
// Had to change
import DoISuportIt from 'components/DoISuportIt';
// To (notice the missing `./`)
import DoISuportIt from './components/DoISuportIt';
Yes, it is 128, except for temp tables, whose names can only be up to 116 character long. It is perfectly explained here.
And the verification can be easily made with the following script contained in the blog post before:
DECLARE @i NVARCHAR(800)
SELECT @i = REPLICATE('A', 116)
SELECT @i = 'CREATE TABLE #'+@i+'(i int)'
PRINT @i
EXEC(@i)
While yourTextField.requestFocus()
is A solution, it is not the best since in the official Java documentation this is discourage as the method requestFocus()
is platform dependent.
The documentation says:
Note that the use of this method is discouraged because its behavior is platform dependent. Instead we recommend the use of requestFocusInWindow().
Use yourJTextField.requestFocusInWindow()
instead.
; For Windows Users to back to temp directory
set backup
set backupdir=C:\WINDOWS\Temp
set backupskip=C:\WINDOWS\Temp\*
set directory=C:\WINDOWS\Temp
set writebackup
Some of more advanced Oracle database features such as session trace do not work properly in Oracle 11g XE 32-bit if installed on Windows 64-bit system. I needed session trace on Windows 7 64-bit.
Apart from that it works well for me in multiple production MS Windows 64-bit systems: Windows Server 2008 R2 and Windows Server 2003 R2.
I'd say the first, if the array is associative. If not, use a for
loop:
for ($i = 0; $i < count($array); $i++) { unset($array[$i]); }
Although if possible, using
$array = array();
To reset the array to an empty array is preferable.
Yes, It's a public key Problem. I'm a windows user,and the page below help me resolve this problem.
more precisely this link should be helpful
https://help.github.com/articles/error-permission-denied-publickey
The easiest is to use the queryout
option and use union all
to link a column list with the actual table content
bcp "select 'col1', 'col2',... union all select * from myschema.dbo.myTableout" queryout myTable.csv /SmyServer01 /c /t, -T
An example:
create table Question1355876
(id int, name varchar(10), someinfo numeric)
insert into Question1355876
values (1, 'a', 123.12)
, (2, 'b', 456.78)
, (3, 'c', 901.12)
, (4, 'd', 353.76)
This query will return the information with the headers as first row (note the casts of the numeric values):
select 'col1', 'col2', 'col3'
union all
select cast(id as varchar(10)), name, cast(someinfo as varchar(28))
from Question1355876
The bcp command will be:
bcp "select 'col1', 'col2', 'col3' union all select cast(id as varchar(10)), name, cast(someinfo as varchar(28)) from Question1355876" queryout myTable.csv /SmyServer01 /c /t, -T
Expanding on Jörn Eyrich answer (upvote his answer if you upvote this one), if you do not have control over the dispatch_async
calls for your blocks, as might be the case for async completion blocks, you can use the GCD groups using dispatch_group_enter
and dispatch_group_leave
directly.
In this example, we're pretending computeInBackground
is something we cannot change (imagine it is a delegate callback, NSURLConnection completionHandler, or whatever), and thus we don't have access to the dispatch calls.
// create a group
dispatch_group_t group = dispatch_group_create();
// pair a dispatch_group_enter for each dispatch_group_leave
dispatch_group_enter(group); // pair 1 enter
[self computeInBackground:1 completion:^{
NSLog(@"1 done");
dispatch_group_leave(group); // pair 1 leave
}];
// again... (and again...)
dispatch_group_enter(group); // pair 2 enter
[self computeInBackground:2 completion:^{
NSLog(@"2 done");
dispatch_group_leave(group); // pair 2 leave
}];
// Next, setup the code to execute after all the paired enter/leave calls.
//
// Option 1: Get a notification on a block that will be scheduled on the specified queue:
dispatch_group_notify(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
NSLog(@"finally!");
});
// Option 2: Block an wait for the calls to complete in code already running
// (as cbartel points out, be careful with running this on the main/UI queue!):
//
// dispatch_group_wait(group, DISPATCH_TIME_FOREVER); // blocks current thread
// NSLog(@"finally!");
In this example, computeInBackground:completion: is implemented as:
- (void)computeInBackground:(int)no completion:(void (^)(void))block {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
NSLog(@"%d starting", no);
sleep(no*2);
block();
});
}
Output (with timestamps from a run):
12:57:02.574 2 starting
12:57:02.574 1 starting
12:57:04.590 1 done
12:57:06.590 2 done
12:57:06.591 finally!
Expanding on Atrur Klesun's idea... you can just access it by its name if you use getElementById to reach the form. In one line:
document.getElementById('form_id').elements['select_name'].value;
I used it like so for radio buttons and worked fine. I guess it's the same here.
Because you send custom headers so your CORS request is not a simple request, so the browser first sends a preflight OPTIONS request to check that the server allows your request.
If you turn on CORS on the server then your code will work. You can also use JavaScript fetch instead (here)
let url='https://server.test-cors.org/server?enable=true&status=200&methods=POST&headers=My-First-Header,My-Second-Header';_x000D_
_x000D_
_x000D_
$.ajax({_x000D_
type: 'POST',_x000D_
url: url,_x000D_
headers: {_x000D_
"My-First-Header":"first value",_x000D_
"My-Second-Header":"second value"_x000D_
}_x000D_
}).done(function(data) {_x000D_
alert(data[0].request.httpMethod + ' was send - open chrome console> network to see it');_x000D_
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
_x000D_
Here is an example configuration which turns on CORS on nginx (nginx.conf file):
location ~ ^/index\.php(/|$) {_x000D_
..._x000D_
add_header 'Access-Control-Allow-Origin' "$http_origin" always;_x000D_
add_header 'Access-Control-Allow-Credentials' 'true' always;_x000D_
if ($request_method = OPTIONS) {_x000D_
add_header 'Access-Control-Allow-Origin' "$http_origin"; # DO NOT remove THIS LINES (doubled with outside 'if' above)_x000D_
add_header 'Access-Control-Allow-Credentials' 'true';_x000D_
add_header 'Access-Control-Max-Age' 1728000; # cache preflight value for 20 days_x000D_
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';_x000D_
add_header 'Access-Control-Allow-Headers' 'My-First-Header,My-Second-Header,Authorization,Content-Type,Accept,Origin';_x000D_
add_header 'Content-Length' 0;_x000D_
add_header 'Content-Type' 'text/plain charset=UTF-8';_x000D_
return 204;_x000D_
}_x000D_
}
_x000D_
Here is an example configuration which turns on CORS on Apache (.htaccess file)
# ------------------------------------------------------------------------------_x000D_
# | Cross-domain Ajax requests |_x000D_
# ------------------------------------------------------------------------------_x000D_
_x000D_
# Enable cross-origin Ajax requests._x000D_
# http://code.google.com/p/html5security/wiki/CrossOriginRequestSecurity_x000D_
# http://enable-cors.org/_x000D_
_x000D_
# <IfModule mod_headers.c>_x000D_
# Header set Access-Control-Allow-Origin "*"_x000D_
# </IfModule>_x000D_
_x000D_
#Header set Access-Control-Allow-Origin "http://example.com:3000"_x000D_
#Header always set Access-Control-Allow-Credentials "true"_x000D_
_x000D_
Header set Access-Control-Allow-Origin "*"_x000D_
Header always set Access-Control-Allow-Methods "POST, GET, OPTIONS, DELETE, PUT"_x000D_
Header always set Access-Control-Allow-Headers "My-First-Header,My-Second-Header,Authorization, content-type, csrf-token"
_x000D_
In my case I'd simply forgotten I had a binding set up for (in my case) https://localhost:44300 in full IIS. You can't have both!
Change the name of the .CSS file Load the page and then change the file again in the original name it works for me.
In CSS you need to use a Unicode escape sequence in place of HTML Entities. This is based on the hexadecimal value of a character.
I found that the easiest way to convert symbol to their hexadecimal equivalent is, such as from ▾ (▾
) to \25BE
is to use the Microsoft calculator =)
Yes. Enable programmers mode, turn on the decimal system, enter 9662
, then switch to hex and you'll get 25BE
. Then just add a backslash \
to the beginning.
The purpose of interfaces is abstraction, or decoupling from implementation.
If you introduce an abstraction in your program, you don't care about the possible implementations. You are interested in what it can do and not how, and you use an interface
to express this in Java.
There are 2 solutions for this, but it return all columns separately:
import functools
dfs = [df1, df2, df3]
df_final = functools.reduce(lambda left,right: pd.merge(left,right,on='date'), dfs)
print (df_final)
date a_x b_x a_y b_y c_x a b c_y
0 May 15,2017 900.00 0.2% 1,900.00 1000000 0.2% 2,900.00 2000000 0.2%
k = np.arange(len(dfs)).astype(str)
df = pd.concat([x.set_index('date') for x in dfs], axis=1, join='inner', keys=k)
df.columns = df.columns.map('_'.join)
print (df)
0_a 0_b 1_a 1_b 1_c 2_a 2_b 2_c
date
May 15,2017 900.00 0.2% 1,900.00 1000000 0.2% 2,900.00 2000000 0.2%
curl --anyauth
Tells curl to figure out authentication method by itself, and use the most secure one the remote site claims to support. This is done by first doing a request and checking the response- headers, thus possibly inducing an extra network round-trip. This is used instead of setting a specific authentication method, which you can do with --basic, --digest, --ntlm, and --negotiate.
You have a couple of helpers.
The helper now() https://laravel.com/docs/7.x/helpers#method-now
The helper now() has an optional argument, the timezone. So you can use now:
now();
or
now("Europe/Rome");
In the same way you could use the helper today() https://laravel.com/docs/7.x/helpers#method-today. This is the "same thing" of now() but with no hours, minutes, seconds.
At the end, under the hood they use Carbon as well.
Swift 4
You have 2 ways in order to change the size of CollectionView.
First way -> add this protocol UICollectionViewDelegateFlowLayout
for
In my case I want to divided cell into 3 part in one line. I did this code below
extension ViewController: UICollectionViewDelegate, UICollectionViewDataSource ,UICollectionViewDelegateFlowLayout{
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize
{
// In this function is the code you must implement to your code project if you want to change size of Collection view
let width = (view.frame.width-20)/3
return CGSize(width: width, height: width)
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return collectionData.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath)
if let label = cell.viewWithTag(100) as? UILabel {
label.text = collectionData[indexPath.row]
}
return cell
}
}
Second way -> you don't have to add UICollectionViewDelegateFlowLayout but you have to write some code in viewDidload function instead as code below
class ViewController: UIViewController {
@IBOutlet weak var collectionView1: UICollectionView!
var collectionData = ["1.", "2.", "3.", "4.", "5.", "6.", "7.", "8.", "9.", "10.", "11.", "12."]
override func viewDidLoad() {
super.viewDidLoad()
let width = (view.frame.width-20)/3
let layout = collectionView.collectionViewLayout as! UICollectionViewFlowLayout
layout.itemSize = CGSize(width: width, height: width)
}
}
extension ViewController: UICollectionViewDelegate, UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return collectionData.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath)
if let label = cell.viewWithTag(100) as? UILabel {
label.text = collectionData[indexPath.row]
}
return cell
}
}
Whatever you write a code as the first way or second way you will get the same result as above. I wrote it. It worked for me
Modals always load the content into an element on the page, which more often than not is a div
. Think of this div
as the iframe
equivalent when it comes to jQuery UI Dialogs. Now it depends on your requirements whether you want static content that resides within the page or you want to fetch the content from some other location. You may use this code and see if it works for you:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>test</title>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<link rel="stylesheet" type="text/css" media="screen" href="css/jquery-ui-1.8.23.custom.css"/>
</head>
<body>
<p>First open a modal <a href="http://ibm.com" class="example"> dialog</a></p>
<div id="dialog"></div>
</body>
<!--jQuery-->
<script src="http://code.jquery.com/jquery-latest.pack.js"></script>
<script src="js/jquery-ui-1.8.23.custom.min.js"></script>
<script type="text/javascript">
$(function(){
//modal window start
$(".example").unbind('click');
$(".example").bind('click',function(){
showDialog();
var titletext=$(this).attr("title");
var openpage=$(this).attr("href");
$("#dialog").dialog( "option", "title", titletext );
$("#dialog").dialog( "option", "resizable", false );
$("#dialog").dialog( "option", "buttons", {
"Close": function() {
$(this).dialog("close");
$(this).dialog("destroy");
}
});
$("#dialog").load(openpage);
return false;
});
//modal window end
//Modal Window Initiation start
function showDialog(){
$("#dialog").dialog({
height: 400,
width: 500,
modal: true
}
</script>
</html>
There are, however, a few things which you should keep in mind. You will not be able to load remote URL's on your local system, you need to upload to a server if you want to load remote URL. Even then, you may only load URL's which belong to the same domain; e.g. if you upload this file to 'www.example.com' you may only access files hosted on 'www.example.com'. For loading external links this might help. All this information you will find in the link as suggested by @Robin.
You can use "translateX(-100%)" and "text-align: right" if your absolute element is "display: inline-block"
<div class="box">
<div class="absolute-right"></div>
</div>
<style type="text/css">
.box{
text-align: right;
}
.absolute-right{
display: inline-block;
position: absolute;
}
/*The magic:*/
.absolute-right{
-moz-transform: translateX(-100%);
-ms-transform: translateX(-100%);
-webkit-transform: translateX(-100%);
-o-transform: translateX(-100%);
transform: translateX(-100%);
}
</style>
You will get absolute-element aligned to the right relative its parent
This is related to this answer: https://stackoverflow.com/a/2653406/931265 Creating an object solved all of my problems.
Insert > Object > Opendocument Text
This will open a document window, paste your text, format it how you want, and close it.
The result is a figure. Right click the object, and select 'add a caption'.
You can now make cross references, create a table of figures.
You can quote if you like, or you can escape the spaces with a preceding \, but most UNIX paths (Mac OS X aside) don't have spaces in them.
/Applications/Image\ Capture.app/Contents/MacOS/Image\ Capture
"/Applications/Image Capture.app/Contents/MacOS/Image Capture"
/Applications/"Image Capture.app"/Contents/MacOS/"Image Capture"
All refer to the same executable under Mac OS X.
I'm not sure what you mean about recognizing a path - if any of the above paths are passed as a parameter to a program the shell will put the entire string in one variable - you don't have to parse multiple arguments to get the entire path.
I did this for an array of objects. Its basically creating new keys in the same array and unsetting the old keys.
public function transform($key, $results)
{
foreach($results as $k=>$result)
{
if( property_exists($result, $key) )
{
$results[$result->$key] = $result;
unset($results[$k]);
}
}
return $results;
}
Try:
#!/bin/bash
# .... some previous code ...
# help set exec | less
set -- 1 2 3 4 5 # fake command line arguments
exec bash --login -c '
echo $0
echo $@
echo my script continues here
' arg0 "$@"
Here's a one-liner updated for 2019:
//your date
var someDate = new Date("Wed Jun 26 2019 09:38:02 GMT+0100")
var result = `${String(someDate.getHours()).padStart(2,"0")}:${String(someDate.getMinutes()).padStart(2,"0")}:${String(someDate.getSeconds()).padStart(2,"0")}`
//result will be "09:38:02"
shared_ptr : holds the real object.
weak_ptr : uses lock
to connect to the real owner or returns a NULL shared_ptr
otherwise.
Roughly speaking, weak_ptr
role is similar to the role of housing agency. Without agents, to get a house on rent we may have to check random houses in the city. The agents make sure that we visit only those houses which are still accessible and available for rent.
Use this
<input type="checkbox" onclick="onClickHandler()" id="box" />
<script>
function onClickHandler(){
var chk=document.getElementById("box").value;
//use this value
}
</script>
I just input some value that I knew was invalid and here is the output:
'whatToInput' is not a supported event for HtmlPanelGrid. Please specify one of these supported event names: click, dblclick, keydown, keypress, keyup, mousedown, mousemove, mouseout, mouseover, mouseup.
So values you can pass to event are
Here is a swift 4 sample code which execute API calling using SOAP service format.
func callSOAPWSToGetData() {
let strSOAPMessage =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" +
"<soap:Body>" +
"<CelsiusToFahrenheit xmlns=\"http://www.yourapi.com/webservices/\">" +
"<Celsius>50</Celsius>" +
"</CelsiusToFahrenheit>" +
"</soap:Body>" +
"</soap:Envelope>"
guard let url = URL.init(string: "http://www.example.org") else {
return
}
var request = URLRequest.init(url: url)
let length = (strSOAPMessage as NSString).length
request.addValue("application/soap+xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
request.addValue("http://www.yourapi.com/webservices/CelsiusToFahrenheit", forHTTPHeaderField: "SOAPAction")
request.addValue(String(length), forHTTPHeaderField: "Content-Length")
request.httpMethod = "POST"
request.httpBody = strSOAPMessage.data(using: .utf8)
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)
let task = session.dataTask(with: request) { (data, response, error) in
guard let responseData = data else {
print("Error: did not receive data")
return
}
guard error == nil else {
print("error calling GET on /todos/1")
print(error ?? "")
return
}
print(responseData)
let strData = String.init(data: responseData, encoding: .utf8)
print(strData ?? "")
}
task.resume()
}
=IFERROR(LEFT(A3, FIND(" ", A3, 1)), A3)
This will firstly check if the cell contains a space, if it does it will return the first value from the space, otherwise it will return the cell value.
Edit
Just to add to the above formula, as it stands if there is no value in the cell it would return 0. If you are looking to display a message or something to tell the user it is empty you could use the following:
=IF(IFERROR(LEFT(A3, FIND(" ", A3, 1)), A3)=0, "Empty", IFERROR(LEFT(A3, FIND(" ", A3, 1)), A3))
I don't know if this will help, but here's the SWT FAQ question How do I use Mozilla as the Browser's underlying renderer?
Edit: Having researched this further, it sounds like this isn't possible in Eclipse 3.4, but may be slated for a later release.
This will remove the margin and padding from your page elements, since there is a paragraph with a script inside that is causing an added margin. this way you should reset it and then you can style the other elements of your page, or you could give that paragraph an id and set margin to zero only for it.
<style>
* {
margin: 0;
padding: 0;
}
</style>
Try to put this as the first style.
Here is my solution:
def chunks(l, amount):
if amount < 1:
raise ValueError('amount must be positive integer')
chunk_len = len(l) // amount
leap_parts = len(l) % amount
remainder = amount // 2 # make it symmetrical
i = 0
while i < len(l):
remainder += leap_parts
end_index = i + chunk_len
if remainder >= amount:
remainder -= amount
end_index += 1
yield l[i:end_index]
i = end_index
Produces
>>> list(chunks([1, 2, 3, 4, 5, 6, 7], 3))
[[1, 2], [3, 4, 5], [6, 7]]
git branch
with no arguments displays the current branch marked with an asterisk in front of it:
user@host:~/gittest$ git branch
* master
someotherbranch
In order to not have to type this all the time, I can recommend git prompt:
https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh
In the AIX box how I can see that I am using master or inside a particular branch. What changes inside .git that drives which branch I am on?
Git stores the HEAD
in the file .git/HEAD
. If you're on the master
branch, it could look like this:
$ cat .git/HEAD
ref: refs/heads/master
The code above will not run in python3 and is less efficient compared to the GCD variants. However, this code is very transparent. It triggered me to create a more compact version:
def imod(a, n):
c = 1
while (c % a > 0):
c += n
return c // a
if in string:
string yourVar = yourTextBoxname.Text;
if in numbers:
int yourVar = int.Parse(yourTextBoxname.Text);
When I need to do this, I make the other values data-values and then use js to assign them to a hidden input
<select id=select>
<option value=1 data-othervalue=2 data-someothervalue=3>
//...
</select>
<input type=hidden name=otherValue id=otherValue />
<input type=hidden name=someOtherValue id=someOtherValue />
<script>
$('#select').change(function () {
var otherValue=$(this).find('option:selected').attr('data-othervalue');
var someOtherValue=$(this).find('option:selected').attr('data-someothervalue');
$('#otherValue').val(otherValue);
$('#someOtherValue').val(someOtherValue);
});
</script>
The main problem in your case would be failure of accessing \\localhost\c$
If you get an error while trying to access the Windows hidden C share (C$):
C:\> net use \\localhost\c$
System error 53 has occurred.
The network path was not found.
You may find the following articles useful: KB254210 and KB951016.
A simple thing is just to make sure your TCP/IP NetBIOS Helper and Server services are running (Start-Run, services.msc) and try again:
C:\> net use \localhost\c$
The command completed successfully.
Of course, your user must be either an administrator or be part of the administrator group.
If it still fails, manually edit the registry (Start-Run, regedit). Browse to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
and create a new DWORD value LocalAccountTokenFilterPolicy set to 1
After solving this issue and installing Oracle Database Server, you can disable back your TCP/IP NetBIOS Helper service if you don't need it anymore.
References: http://groglogs.blogspot.ro/2013/11/windows-cannot-access-hidden-c-admin.html
For others:
If you don't have the problem with \\localhost\c$, then you might have the other problem with your username as the others stated (e.g. username with '_' in it):
This will get solved by changing TEMP and TMP environment variables from a command line and then running setup.exe from there.
If this still doesn't work:
Try running setup.exe with "-debug" option and see what happens in there.
You may also want to check what's in the .log files created in your %TEMP% folder (e.g. ssproiut_%number%.log)
The first part consists of creating a new package under java
folder and selecting then dragging all your source files from the old package
to this new package
. After that you need to remane
the package name in android manifest
to the name of the new package.
In step 2, here is what you need to do.You need to change the old package name in applicationId
under the module build.gradle
in your android studio in addition to changing the package name in the manifest
. So in summary, click on build.gradle
which is below the "AndroidManifest.xml" and modify the value of applicationId
to your new package name.
Then, at the very top, under build
. clean
your project, then rebuild
. It should be fine from here.
Depending on you flavor of SQL, you can also imply the else statement in your aggregate counts.
For example, here's a simple table Grades
:
| Letters |
|---------|
| A |
| A |
| B |
| C |
We can test out each Aggregate counter syntax like this (Interactive Demo in SQL Fiddle):
SELECT
COUNT(CASE WHEN Letter = 'A' THEN 1 END) AS [Count - End],
COUNT(CASE WHEN Letter = 'A' THEN 1 ELSE NULL END) AS [Count - Else Null],
COUNT(CASE WHEN Letter = 'A' THEN 1 ELSE 0 END) AS [Count - Else Zero],
SUM(CASE WHEN Letter = 'A' THEN 1 END) AS [Sum - End],
SUM(CASE WHEN Letter = 'A' THEN 1 ELSE NULL END) AS [Sum - Else Null],
SUM(CASE WHEN Letter = 'A' THEN 1 ELSE 0 END) AS [Sum - Else Zero]
FROM Grades
And here are the results (unpivoted for readability):
| Description | Counts |
|-------------------|--------|
| Count - End | 2 |
| Count - Else Null | 2 |
| Count - Else Zero | 4 | *Note: Will include count of zero values
| Sum - End | 2 |
| Sum - Else Null | 2 |
| Sum - Else Zero | 2 |
Which lines up with the docs for Aggregate Functions in SQL
Docs for COUNT
:
COUNT(*)
- returns the number of items in a group. This includes NULL values and duplicates.
COUNT(ALL expression)
- evaluates expression for each row in a group, and returns the number of nonnull values.
COUNT(DISTINCT expression)
- evaluates expression for each row in a group, and returns the number of unique, nonnull values.
Docs for SUM
:
ALL
- Applies the aggregate function to all values. ALL is the default.
DISTINCT
- Specifies that SUM return the sum of unique values.
Another no-regex solution that works well on Python 3
# Split strings and keep separator
test_strings = ['<Hello>', 'Hi', '<Hi> <Planet>', '<', '']
def split_and_keep(s, sep):
if not s: return [''] # consistent with string.split()
# Find replacement character that is not used in string
# i.e. just use the highest available character plus one
# Note: This fails if ord(max(s)) = 0x10FFFF (ValueError)
p=chr(ord(max(s))+1)
return s.replace(sep, sep+p).split(p)
for s in test_strings:
print(split_and_keep(s, '<'))
# If the unicode limit is reached it will fail explicitly
unicode_max_char = chr(1114111)
ridiculous_string = '<Hello>'+unicode_max_char+'<World>'
print(split_and_keep(ridiculous_string, '<'))
Regarding jQuery
, the following common methods will also remove other constructs such as data and event handlers:
In addition to the elements themselves, all bound events and jQuery data associated with the elements are removed.
To avoid memory leaks, jQuery removes other constructs such as data and event handlers from the child elements before removing the elements themselves.
Additionally, jQuery removes other constructs such as data and event handlers from child elements before replacing those elements with the new content.
Here is a simpler solution. Override the onTouch()
for the ScrollView
OnTouchListener
and return false if you want to bypass the scroll by touch. The programmatic scrolling still works and no need to extend the ScrollView
class.
mScroller.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
return isScrollable;
}
});
define() is part of the AMD spec of js
See:
Edit: Also see Claudio's answer below. Likely the more relevant explanation.
For selenium automation users
Most of what you "know" is wrong.
First of all, as a few of the relational gurus routinely (and sometimes stridently) point out, SQL doesn't really fit nearly as closely with relational theory as many people think. Second, most of the differences in "NoSQL" stuff has relatively little to do with whether it's relational or not. Finally, it's pretty difficult to say how "NoSQL" differs from SQL because both represent a pretty wide range of possibilities.
The one major difference that you can count on is that almost anything that supports SQL supports things like triggers in the database itself -- i.e. you can design rules into the database proper that are intended to ensure that the data is always internally consistent. For example, you can set things up so your database asserts that a person must have an address. If you do so, anytime you add a person, it will basically force you to associate that person with some address. You might add a new address or you might associate them with some existing address, but one way or another, the person must have an address. Likewise, if you delete an address, it'll force you to either remove all the people currently at that address, or associate each with some other address. You can do the same for other relationships, such as saying every person must have a mother, every office must have a phone number, etc.
Note that these sorts of things are also guaranteed to happen atomically, so if somebody else looks at the database as you're adding the person, they'll either not see the person at all, or else they'll see the person with the address (or the mother, etc.)
Most of the NoSQL databases do not attempt to provide this kind of enforcement in the database proper. It's up to you, in the code that uses the database, to enforce any relationships necessary for your data. In most cases, it's also possible to see data that's only partially correct, so even if you have a family tree where every person is supposed to be associated with parents, there can be times that whatever constraints you've imposed won't really be enforced. Some will let you do that at will. Others guarantee that it only happens temporarily, though exactly how long it can/will last can be open to question.
You can use substr
for example:
new Date().getFullYear().toString().substr(-2)
All objects in python are implemented via references so the distinction between objects and pointers to objects does not exist in source code.
The python equivalent of NULL
is called None
(good info here). As all objects in python are implemented via references, you can re-write your struct to look like this:
class Node:
def __init__(self): #object initializer to set attributes (fields)
self.val = 0
self.right = None
self.left = None
And then it works pretty much like you would expect:
node = Node()
node.val = some_val #always use . as everything is a reference and -> is not used
node.left = Node()
Note that unlike in NULL
in C, None
is not a "pointer to nowhere": it is actually the only instance of class NoneType
.
Therefore, as None
is a regular object, you can test for it just like any other object:
if node.left == None:
print("The left node is None/Null.")
Although since None
is a singleton instance, it is considered more idiomatic to use is
and compare for reference equality:
if node.left is None:
print("The left node is None/Null.")
Here's a trick I recently worked out for executing raw sql with binds:
binds = SomeRecord.bind(a_string_field: value1, a_date_field: value2) +
SomeOtherRecord.bind(a_numeric_field: value3)
SomeRecord.connection.exec_query <<~SQL, nil, binds
SELECT *
FROM some_records
JOIN some_other_records ON some_other_records.record_id = some_records.id
WHERE some_records.a_string_field = $1
AND some_records.a_date_field < $2
AND some_other_records.a_numeric_field > $3
SQL
where ApplicationRecord
defines this:
# Convenient way of building custom sql binds
def self.bind(column_values)
column_values.map do |column_name, value|
[column_for_attribute(column_name), value]
end
end
and that is similar to how AR binds its own queries.
$res = ActivityServer::query()->select('channel_id')->where(['id' => $id])->first()->attributesToArray();
I use get()
, it returns an object, I use the attributesToArray()
to change the object attribute to an array.
In addition to the accepted answer, I would like to add one info, that NuGet packages in Visual Studio 2017 are located in the project file itself. I.e., right click on the project -> edit, to find all package reference entries.
Sessions are stored on the server and are set from server side code, not client side code such as JavaScript.
What you want is a cookie, someone's given a brilliant explanation in this Stack Overflow question here: How do I set/unset cookie with jQuery?
You could potentially use sessions and set/retrieve them with jQuery and AJAX, but it's complete overkill if Cookies will do the trick.
You can also do it in one row:
if (MessageBox.Show("Text", "Title", MessageBoxButtons.YesNo) == DialogResult.Yes)
And if you want to show a messagebox on top:
if (MessageBox.Show(new Form() { TopMost = true }, "Text", "Text", MessageBoxButtons.YesNo) == DialogResult.Yes)
Create activity as dialog, Here is Full Example
AndroidManife.xml
<activity android:name=".appview.settings.view.DialogActivity" android:excludeFromRecents="true" android:theme="@style/Theme.AppCompat.Dialog"/>
DialogActivity.kt
class DialogActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_dialog)
this.setFinishOnTouchOutside(true)
btnOk.setOnClickListener {
finish()
}
}
}
activity_dialog.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0072ff"
android:gravity="center"
android:orientation="vertical">
<LinearLayout
android:layout_width="@dimen/_300sdp"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="@+id/txtTitle"
style="@style/normal16Style"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingTop="20dp"
android:paddingBottom="20dp"
android:text="Download"
android:textColorHint="#FFF" />
<View
android:id="@+id/viewDivider"
android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#fff"
android:backgroundTint="@color/white_90"
app:layout_constraintBottom_toBottomOf="@id/txtTitle" />
<TextView
style="@style/normal14Style"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:paddingTop="20dp"
android:paddingBottom="20dp"
android:text="Your file is download"
android:textColorHint="#FFF" />
<Button
android:id="@+id/btnOk"
style="@style/normal12Style"
android:layout_width="100dp"
android:layout_height="40dp"
android:layout_marginBottom="20dp"
android:background="@drawable/circle_corner_layout"
android:text="Ok"
android:textAllCaps="false" />
</LinearLayout>
</LinearLayout>
5000 lines isn't big (well, depends on how long the lines are...)
Anyway: assuming the string will be a word and will be seperated by whitespace...
lines=open(file_path,'r').readlines()
str_wanted="whatever_youre_looking_for"
for i in range(len(lines)):
l1=lines.split()
for p in range(len(l1)):
if l1[p]==str_wanted:
#found
# i is the file line, lines[i] is the full line, etc.
As stated above to define a map as constant is not possible. But you can declare a global variable which is a struct that contains a map.
The Initialization would look like this:
var romanNumeralDict = struct {
m map[int]string
}{m: map[int]string {
1000: "M",
900: "CM",
//YOUR VALUES HERE
}}
func main() {
d := 1000
fmt.Printf("Value of Key (%d): %s", d, romanNumeralDict.m[1000])
}
If non of the above answers don't work you can do this in kotlin dsl
android {
...
tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
kotlinOptions {
jvmTarget = "1.8"
}
}
}
To replace a string in multiple files you can use:
grep -rl string1 somedir/ | xargs sed -i 's/string1/string2/g'
E.g.
grep -rl 'windows' ./ | xargs sed -i 's/windows/linux/g'
I don't think you're fully grasping modulo. a % b
and a mod b
are just two different ways to express modulo. In this case, python uses %
. No, 15 mod 4
is not 1
, 15 % 4 == 15 mod 4 == 3
.
You can define:
Context ctx;
And on onCreate
initialise ctx
to:
ctx=parent.getContext();
Note: Parent is a ViewGroup.
If you have Python installed on your local machine (or you don't mind install one), here is a browser-independent workaround for local JSON file access problem that I use:
Transform the JSON file into a JavaScript by creating a function that returns the data as JavaScript object. Then you can load it with <script> tag and call the function to get the data you want.
Here comes the Python code
import json
def json2js(jsonfilepath, functionname='getData'):
"""function converting json file to javascript file: json_data -> json_data.js
:param jsonfilepath: path to json file
:param functionname: name of javascript function which will return the data
:return None
"""
# load json data
with open(jsonfilepath,'r') as jsonfile:
data = json.load(jsonfile)
# write transformed javascript file
with open(jsonfilepath+'.js', 'w') as jsfile:
jsfile.write('function '+functionname+'(){return ')
jsfile.write(json.dumps(data))
jsfile.write(';}')
if __name__ == '__main__':
from sys import argv
l = len(argv)
if l == 2:
json2js(argv[1])
elif l == 3:
json2js(argv[1], argv[2])
else:
raise ValueError('Usage: python pathTo/json2js.py jsonfilepath [jsfunctionname]')
Try this
`var url = "http://stackoverflow.com";
$(location).attr('href',url);`
Or you can do something like this
// similar behavior as an HTTP redirect
window.location.replace("http://stackoverflow.com");
// similar behavior as clicking on a link
window.location.href = "http://stackoverflow.com";
and add a return false at the end of your function call
I use the ffmpeg-python
binding. You can find more information here.
import ffmpeg
(
ffmpeg
.input('/path/to/jpegs/*.jpg', pattern_type='glob', framerate=25)
.output('movie.mp4')
.run()
)
The file msrdo20.dll is missing from the installation.
According to the Support Statement for Visual Basic 6.0 on Windows Vista, Windows Server 2008 and Windows 7 this file should be distributed with the application.
I'm not sure why it isn't, but my solution is to place the file somewhere on the machine, and register it using regsvr32 in the command line, eg:
regsvr32 c:\windows\system32\msrdo20.dll
In an ideal world you would package this up with the redistributable.
This tutorial should help you:
Getting Started with Oracle SQL Developer
See the prerequisites:
Unlock the HR user. Login to SQL*Plus as the SYS user and execute the following command:
alter user hr identified by hr account unlock;
Download and unzip the sqldev_mngdb.zip file that contains all the files you need to perform this tutorial.
Another version from May 2011: Getting Started with Oracle SQL Developer
For more info check this related question:
How to create a new database after initally installing oracle database 11g Express Edition?
RefreshScope
have some problems when using with @Configuration
. Please see this github issueChange your class like this:
@ConfigurationProperties(prefix = "available-payment-channels-list")
@Configuration
public class AvailableChannelsConfiguration {
private String xyz;
private List<ChannelConfiguration> channelConfigurations;
// getters, setters
public static class ChannelConfiguration {
private String name;
private String companyBankAccount;
// getters, setters
}
}
You should override Equals
and GetHashCode
meaningfully, in this case to compare the ID:
public class LinqTest
{
public int id { get; set; }
public string value { get; set; }
public override bool Equals(object obj)
{
LinqTest obj2 = obj as LinqTest;
if (obj2 == null) return false;
return id == obj2.id;
}
public override int GetHashCode()
{
return id;
}
}
Now you can use Distinct
:
List<LinqTest> uniqueIDs = myList.Distinct().ToList();
Verify it on SQL Server:
Select top 10 * From emp
EXCEPT
Select top 9 * From emp
This will give you 10th ROW of emp table!
As you are using asp:Button
which is a server control, post back will happen to avoid that go for html
button,
asp:Button .... />
Type to
input type="button" .... />
you can edit the javascrpit files dynamically in the Chrome debugger, under the Sources tab, however your changes will be lost if you refresh the page, to pause page loading before doing your changes, you will need to set a break point then reload the page and edit your changes and finally unpause the debugger to see your changes take effect.
Use:
df['name'].mode()
or
df['name'].value_counts().idxmax()
For a birthday date with format Date/Month/Year
function age($birthday){
list($day, $month, $year) = explode("/", $birthday);
$year_diff = date("Y") - $year;
$month_diff = date("m") - $month;
$day_diff = date("d") - $day;
if ($day_diff < 0 && $month_diff==0) $year_diff--;
if ($day_diff < 0 && $month_diff < 0) $year_diff--;
return $year_diff;
}
or the same function that accepts day, month, year as parameters :
function age($day, $month, $year){
$year_diff = date("Y") - $year;
$month_diff = date("m") - $month;
$day_diff = date("d") - $day;
if ($day_diff < 0 && $month_diff==0) $year_diff--;
if ($day_diff < 0 && $month_diff < 0) $year_diff--;
return $year_diff;
}
You can use it like this :
echo age("20/01/2000");
which will output the correct age (On 4 June, it's 14).
Try pysed:
pysed -r '# deb' 'deb' /etc/apt/sources.list
I was facing the same issue in bitbucket, and this worked for me:
line1
##<2 white spaces><enter>
line2
You can do this with array_keys and count.
$array = array("blue", "red", "green", "blue", "blue");
echo count(array_keys($array, "blue"));
Output:
3
Be careful when you take the exception object or the traceback object out of the exception handler, since this causes circular references and gc.collect()
will fail to collect. This appears to be of a particular problem in the ipython/jupyter notebook environment where the traceback object doesn't get cleared at the right time and even an explicit call to gc.collect()
in finally
section does nothing. And that's a huge problem if you have some huge objects that don't get their memory reclaimed because of that (e.g. CUDA out of memory exceptions that w/o this solution require a complete kernel restart to recover).
In general if you want to save the traceback object, you need to clear it from references to locals()
, like so:
import sys, traceback, gc
type, val, tb = None, None, None
try:
myfunc()
except:
type, val, tb = sys.exc_info()
traceback.clear_frames(tb)
# some cleanup code
gc.collect()
# and then use the tb:
if tb:
raise type(val).with_traceback(tb)
In the case of jupyter notebook, you have to do that at the very least inside the exception handler:
try:
myfunc()
except:
type, val, tb = sys.exc_info()
traceback.clear_frames(tb)
raise type(val).with_traceback(tb)
finally:
# cleanup code in here
gc.collect()
Tested with python 3.7.
p.s. the problem with ipython or jupyter notebook env is that it has %tb
magic which saves the traceback and makes it available at any point later. And as a result any locals()
in all frames participating in the traceback will not be freed until the notebook exits or another exception will overwrite the previously stored backtrace. This is very problematic. It should not store the traceback w/o cleaning its frames. Fix submitted here.
pylint --generate-rcfile
shows it like this:
[MESSAGES CONTROL]
# Enable the message, report, category or checker with the given id(s). You can
# either give multiple identifier separated by comma (,) or put this option
# multiple time.
#enable=
# Disable the message, report, category or checker with the given id(s). You
# can either give multiple identifier separated by comma (,) or put this option
# multiple time (only on the command line, not in the configuration file where
# it should appear only once).
#disable=
So it looks like your ~/.pylintrc
should have the disable=
line/s in it inside a section [MESSAGES CONTROL]
.
If you're using Python 3
then you must install as follows:
sudo apt-get update
sudo apt-get install python3-tk
Tkinter for Python 2
(python-tk
) is different from Python 3
's (python3-tk
).
It is not recursion, it is overloading. The two add methods (the one in your snippet, and the one "provided" by ArrayList that you are extending) are not the same method, cause they are declared with different parameters.
For this example you will need to create your own type, that would be an array. Then you create a bigger array which elements are of type you have just created.
To run my example you will need to fill columns A and B in Sheet1 with some values. Then run test(). It will read first two rows and add the values to the BigArr. Then it will check how many rows of data you have and read them all, from the place it has stopped reading, i.e., 3rd row.
Tested in Excel 2007.
Option Explicit
Private Type SmallArr
Elt() As Variant
End Type
Sub test()
Dim x As Long, max_row As Long, y As Long
'' Define big array as an array of small arrays
Dim BigArr() As SmallArr
y = 2
ReDim Preserve BigArr(0 To y)
For x = 0 To y
ReDim Preserve BigArr(x).Elt(0 To 1)
'' Take some test values
BigArr(x).Elt(0) = Cells(x + 1, 1).Value
BigArr(x).Elt(1) = Cells(x + 1, 2).Value
Next x
'' Write what has been read
Debug.Print "BigArr size = " & UBound(BigArr) + 1
For x = 0 To UBound(BigArr)
Debug.Print BigArr(x).Elt(0) & " | " & BigArr(x).Elt(1)
Next x
'' Get the number of the last not empty row
max_row = Range("A" & Rows.Count).End(xlUp).Row
'' Change the size of the big array
ReDim Preserve BigArr(0 To max_row)
Debug.Print "new size of BigArr with old data = " & UBound(BigArr)
'' Check haven't we lost any data
For x = 0 To y
Debug.Print BigArr(x).Elt(0) & " | " & BigArr(x).Elt(1)
Next x
For x = y To max_row
'' We have to change the size of each Elt,
'' because there are some new for,
'' which the size has not been set, yet.
ReDim Preserve BigArr(x).Elt(0 To 1)
'' Take some test values
BigArr(x).Elt(0) = Cells(x + 1, 1).Value
BigArr(x).Elt(1) = Cells(x + 1, 2).Value
Next x
'' Check what we have read
Debug.Print "BigArr size = " & UBound(BigArr) + 1
For x = 0 To UBound(BigArr)
Debug.Print BigArr(x).Elt(0) & " | " & BigArr(x).Elt(1)
Next x
End Sub
You could use Linq's FirstOrDefault
extension method:
string element = myList.FirstOrDefault(s => s.Contains(myString));
This will return the fist element that contains the substring myString
, or null
if no such element is found.
If all you need is the index, use the List<T>
class's FindIndex
method:
int index = myList.FindIndex(s => s.Contains(myString));
This will return the the index of fist element that contains the substring myString
, or -1
if no such element is found.
The most compatible command I've found for gcc and clang on Linux (thanks to armando.sano):
$ gcc -m64 -Xlinker --verbose 2>/dev/null | grep SEARCH | sed 's/SEARCH_DIR("=\?\([^"]\+\)"); */\1\n/g' | grep -vE '^$'
if you give -m32
, it will output the correct library directories.
Examples on my machine:
for g++ -m64
:
/usr/x86_64-linux-gnu/lib64
/usr/i686-linux-gnu/lib64
/usr/local/lib/x86_64-linux-gnu
/usr/local/lib64
/lib/x86_64-linux-gnu
/lib64
/usr/lib/x86_64-linux-gnu
/usr/lib64
/usr/local/lib
/lib
/usr/lib
for g++ -m32
:
/usr/i686-linux-gnu/lib32
/usr/local/lib32
/lib32
/usr/lib32
/usr/local/lib/i386-linux-gnu
/usr/local/lib
/lib/i386-linux-gnu
/lib
/usr/lib/i386-linux-gnu
/usr/lib
if you using Generic Array List with Class instead of specific type like
EX:
private ArrayList<Model> aListModel = new ArrayList<Model>();
Here, Model = Class
Receiving Intent Like :
aListModel = (ArrayList<Model>) getIntent().getSerializableExtra(KEY);
MUST REMEMBER:
Here Model-class must be implemented like: ModelClass implements Serializable
What you need is this:
a, b, c = [0,3,5] # Unpack the list, now a, b, and c are ints
a = 1 # `a` did equal 0, not [0,3,5]
print(a)
print(b)
print(c)
If you have a worksheet with many rows that all contain the formula, by far the easiest method is to copy a row that is without data (but it does contain formulas), and then "insert copied cells" below/above the row where you want to add. The formulas remain. In a pinch, it is OK to use a row with data. Just clear it or overwrite it after pasting.
Primitives are a different kind of type than objects created from within Javascript. From the Mozilla API docs:
var color1 = new String("green");
color1 instanceof String; // returns true
var color2 = "coral";
color2 instanceof String; // returns false (color2 is not a String object)
I can't find any way to construct primitive types with code, perhaps it's not possible. This is probably why people use typeof "foo" === "string"
instead of instanceof
.
An easy way to remember things like this is asking yourself "I wonder what would be sane and easy to learn"? Whatever the answer is, Javascript does the other thing.
Include using namespace System.Linq
List<string> stringList = line.Split(',').ToList();
you can make use of it with ease for iterating through each item.
foreach(string str in stringList)
{
}
String.Split()
returns an array, hence convert it to a list using ToList()
Can I just ask to compare based on the year and month?
You can. Here's a simple example using the AdventureWorks sample database...
DECLARE @Year INT
DECLARE @Month INT
SET @Year = 2002
SET @Month = 6
SELECT
[pch].*
FROM
[Production].[ProductCostHistory] pch
WHERE
YEAR([pch].[ModifiedDate]) = @Year
AND MONTH([pch].[ModifiedDate]) = @Month
If you are using jdk1.7.0_04, upgrade to jdk1.7.0_21. The problem has been fixed in that update.
If you use the java keyword abstract
you cannot provide an implementation.
Sometimes this idea comes from having a background in C++ and mistaking the virtual
keyword in C++ as being "almost the same" as the abstract
keyword in Java.
In C++ virtual
indicates that a method can be overridden and polymorphism will follow, but abstract
in Java is not the same thing. In Java abstract
is more like a pure virtual
method, or one where the implementation must be provided by a subclass. Since Java supports polymorphism without the need to declare it, all methods are virtual
from a C++ point of view. So if you want to provide a method that might be overridden, just write it as a "normal" method.
Now to protect a method from being overridden, Java uses the keyword final
in coordination with the method declaration to indicate that subclasses cannot override the method.
The suggestion by hjpotter92 does not work in safari! I have made a small adjustment to the script so it now works in Safari as well.
Only change made is resetting height to 0 on every load in order to enable some browsers to decrease height.
Add this to <head>
tag:
<script type="text/javascript">
function resizeIframe(obj){
obj.style.height = 0;
obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
}
</script>
And add the following onload
attribute to your iframe, like so
<iframe onload='resizeIframe(this)'></iframe>
"The only thing you can really say about my taste is that it is old fashioned, and in time yours will be too." -Tolkien.
See the first answer to Accessing a matrix element in the "Mat" object (not the CvMat object) in OpenCV C++
Then just loop over all the elements in cout << M.at<double>(0,0);
rather than just 0,0
Or better still with the C++ interface:
cv::Mat M;
cout << "M = " << endl << " " << M << endl << endl;
I am using ionciv1, in the file ionic.config.json
delete the angular type key and it worked correctly
example:
{
"name": "nombre",
"integrations": {
"cordova": {}
},
"type": "angular", // delete
"gulpStartupTasks": [
"sass",
"templatecache",
"ng_annotate",
"useref",
"watch"
],
"watchPatterns": [
"www/**/*",
"!www/lib/**/*"
],
"browsers": [
{
"platform": "android",
"browser": "crosswalk",
"version": "12.41.296.5"
}
],
"id": "0.1"
}
solved
{
"name": "nombre",
"integrations": {
"cordova": {}
},
"gulpStartupTasks": [
"sass",
"templatecache",
"ng_annotate",
"useref",
"watch"
],
"watchPatterns": [
"www/**/*",
"!www/lib/**/*"
],
"browsers": [
{
"platform": "android",
"browser": "crosswalk",
"version": "12.41.296.5"
}
],
"id": "0.1"
}
$("#item1 span").text();
I am using Spring 4.1.6 and Jackson FasterXML 2.1.4.
<mvc:annotation-driven>
<mvc:message-converters>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="com.fasterxml.jackson.databind.ObjectMapper">
<!-- ?????null??-->
<property name="serializationInclusion" value="NON_NULL"/>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
this works at my applicationContext.xml configration
try with:
tr:last-child td:last-child{
border:none;
/*any other style*/
}
this will only affect the very last td element in the table, assuming is the only one (else, you'll just have to identify your table). Though, is very general, and it will adapt to the last TD if you add more content to your table. So if it is a particular case
td:nth-child(5){
border:none;
}
should be enough.
You have a selector ul
on line 252
which is setting list-style: square outside none
(a square bullet). You'll have to change it to list-style: none
or just remove the line.
If you only want to remove the bullets from that specific instance, you can use the specific selector for that list and its items as follows:
ul#groups-list.items-list { list-style: none }
Since office 2013 use this inbuilt function here.
If before office 2013
Function encodeURL(str As String)
Dim ScriptEngine As ScriptControl
Set ScriptEngine = New ScriptControl
ScriptEngine.Language = "JScript"
ScriptEngine.AddCode "function encode(str) {return encodeURIComponent(str);}"
Dim encoded As String
encoded = ScriptEngine.Run("encode", str)
encodeURL = encoded
End Function
Add Microsoft Script Control as reference and you are done.
Same as last post just complete function ..works!
There are some js-libraries that could help you with it:
You might also want to take a look at Lawnchair, which is a JSON-Document-Store which works in the browser and has all sorts of querying-mechanisms.
I use
select /*+ parallel(a) */ count(1) from table_name a;
newlist=[] #make an empty list
for i in list: # loop to hv a dict in list
s={} # make an empty dict to store new dict data
for k in i.keys(): # to get keys in the dict of the list
s[k]=int(i[k]) # change the values from string to int by int func
newlist.append(s) # to add the new dict with integer to the list
They are project files, that hold the module information and meta data.
Just add *.iml
to .gitignore
.
In Android Studio: Press CTRL + F9 to rebuild your project. The missing *.iml
files will be generated.