thanks, Dear all for the right answer, I am using Flutter on Ubuntu
killall -9 dart
this command helps resolve this issue for me as well
[[ $(lsof -t $0| wc -l) > 1 ]] && echo "At least one of $0 is running"
currsh=$0
currpid=$$
runpid=$(lsof -t $currsh| paste -s -d " ")
if [[ $runpid == $currpid ]]
then
sleep 11111111111111111
else
echo -e "\nPID($runpid)($currpid) ::: At least one of \"$currsh\" is running !!!\n"
false
exit 1
fi
"lsof -t" to list all pids of current running scripts named "$0".
Command "lsof" will do two advantages.
Yes, it's a standard practice to commit package-lock.json
.
The main reason for committing package-lock.json
is that everyone in the project is on the same package version.
Pros:
Cons:
npm install
won't make sure that everyone in the project is on the same package version. npm ci
will help with this.
There's a wrapper around the flock(2) system call called, unimaginatively, flock(1). This makes it relatively easy to reliably obtain exclusive locks without worrying about cleanup etc. There are examples on the man page as to how to use it in a shell script.
If you really want to list modified files only you can reduce the output of svn st by leading "M" that indicates a file has been modified. I would do this like that:
svn st | grep ^M
I have managed to achieve this using this XML code only. It might be the case that eclipse does not render the height to show it expanding to fit; however, when you actually run this on a device, it properly renders and provides the desired result. (well at least for me)
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="@drawable/whatever" />
</FrameLayout>
Use ISNULL to overcome it.
Example:
SELECT (ISNULL(field1, '') + '' + ISNULL(field2, '')+ '' + ISNULL(field3, '')) FROM table1
This will then replace your NULL content with an empty string which will preserve the concatentation operation from evaluating as an overall NULL result.
If your two angles are x and y, then one of the angles between them is abs(x - y). The other angle is (2 * PI) - abs(x - y). So the value of the smallest of the 2 angles is:
min((2 * PI) - abs(x - y), abs(x - y))
This gives you the absolute value of the angle, and it assumes the inputs are normalized (ie: within the range [0, 2p)
).
If you want to preserve the sign (ie: direction) of the angle and also accept angles outside the range [0, 2p)
you can generalize the above. Here's Python code for the generalized version:
PI = math.pi
TAU = 2*PI
def smallestSignedAngleBetween(x, y):
a = (x - y) % TAU
b = (y - x) % TAU
return -a if a < b else b
Note that the %
operator does not behave the same in all languages, particularly when negative values are involved, so if porting some sign adjustments may be necessary.
STATICFILES_DIRS
: You can keep the static files for your project here e.g. the ones used by your templates.
STATIC_ROOT
: leave this empty, when you do manage.py collectstatic
, it will search for all the static files on your system and move them here. Your static file server is supposed to be mapped to this folder wherever it is located. Check it after running collectstatic and you'll find the directory structure django has built.
--------Edit----------------
As pointed out by @DarkCygnus, STATIC_ROOT should point at a directory on your filesystem, the folder should be empty since it will be populated by Django.
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
or
STATIC_ROOT = '/opt/web/project/static_files'
--------End Edit -----------------
STATIC_URL
: '/static/' is usually fine, it's just a prefix for static files.
TL;DR:
if (navigate) {
return <Redirect to="/" push={true} />
}
The simple and declarative answer is that you need to use <Redirect to={URL} push={boolean} />
in combination with setState()
push: boolean - when true, redirecting will push a new entry onto the history instead of replacing the current one.
import { Redirect } from 'react-router'
class FooBar extends React.Component {
state = {
navigate: false
}
render() {
const { navigate } = this.state
// here is the important part
if (navigate) {
return <Redirect to="/" push={true} />
}
// ^^^^^^^^^^^^^^^^^^^^^^^
return (
<div>
<button onClick={() => this.setState({ navigate: true })}>
Home
</button>
</div>
)
}
}
Full example here. Read more here.
PS. The example uses ES7+ Property Initializers to initialise state. Look here as well, if you're interested.
This will help you.
debugger;
var today = new Date();
document.getElementById('date').innerHTML = today
This is generic solution:
str.replaceAll("^.|.$", "")
Convert one of them to a double first. This form works in many languages:
real_result = (int_numerator + 0.0) / int_denominator
For the simplest choice, I'd go with minidom: http://docs.python.org/library/xml.dom.minidom.html . It is built in to the python standard library and is straightforward to use in simple cases.
Here's a pretty easy to follow tutorial: http://www.boddie.org.uk/python/XML_intro.html
No, there is no "easy" way. Your best bet would be to do a loop where you first check each previous sibling, then move to the parent node and all of its previous siblings.
You'll need to break the selector into two, 1 to check if the current node could be the top level node in your selector, and 1 to check if it's descendants match.
Edit: This might as well be a plugin. You can use this with any selector in any HTML:
(function($) {
$.fn.closestPrior = function(selector) {
selector = selector.replace(/^\s+|\s+$/g, "");
var combinator = selector.search(/[ +~>]|$/);
var parent = selector.substr(0, combinator);
var children = selector.substr(combinator);
var el = this;
var match = $();
while (el.length && !match.length) {
el = el.prev();
if (!el.length) {
var par = el.parent();
// Don't use the parent - you've already checked all of the previous
// elements in this parent, move to its previous sibling, if any.
while (par.length && !par.prev().length) {
par = par.parent();
}
el = par.prev();
if (!el.length) {
break;
}
}
if (el.is(parent) && el.find(children).length) {
match = el.find(children).last();
}
else if (el.find(selector).length) {
match = el.find(selector).last();
}
}
return match;
}
})(jQuery);
When working with multiple people, it's sometimes difficult to know exactly what's happening. Using a format string instead of concatenation can avoid one particular annoyance that's happened a whole ton of times to us:
Say, a function requires an argument, and you write it expecting to get a string:
In [1]: def foo(zeta):
...: print 'bar: ' + zeta
In [2]: foo('bang')
bar: bang
So, this function may be used pretty often throughout the code. Your coworkers may know exactly what it does, but not necessarily be fully up-to-speed on the internals, and may not know that the function expects a string. And so they may end up with this:
In [3]: foo(23)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/izkata/<ipython console> in <module>()
/home/izkata/<ipython console> in foo(zeta)
TypeError: cannot concatenate 'str' and 'int' objects
There would be no problem if you just used a format string:
In [1]: def foo(zeta):
...: print 'bar: %s' % zeta
...:
...:
In [2]: foo('bang')
bar: bang
In [3]: foo(23)
bar: 23
The same is true for all types of objects that define __str__
, which may be passed in as well:
In [1]: from datetime import date
In [2]: zeta = date(2012, 4, 15)
In [3]: print 'bar: ' + zeta
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/izkata/<ipython console> in <module>()
TypeError: cannot concatenate 'str' and 'datetime.date' objects
In [4]: print 'bar: %s' % zeta
bar: 2012-04-15
So yes: If you can use a format string do it and take advantage of what Python has to offer.
In principle, you can pass any reformatting function to the labels
parameter:
+ scale_y_continuous(labels = function(x) paste0(x*100, "%")) # Multiply by 100 & add %
Or
+ scale_y_continuous(labels = function(x) paste0(x, "%")) # Add percent sign
Reproducible example:
library(ggplot2)
df = data.frame(x=seq(0,1,0.1), y=seq(0,1,0.1))
ggplot(df, aes(x,y)) +
geom_point() +
scale_y_continuous(labels = function(x) paste0(x*100, "%"))
Angular does not support this kind of query string.
The query part of the URL is supposed to be a &
-separated sequence of key-value pairs, thus perfectly interpretable as an object.
There is no API at all to manage query strings that do not represent sets of key-value pairs.
Try this:
try{
Thread.sleep(100);
}catch(Exception e)
{
System.out.println("Exception caught");
}
The variables $1 .. $9 are also read only variables so you can't implicitly assign a value to them:
$1 = 'foo'; print $1;
That will return an error: Modification of a read-only value attempted at script line 1.
You also can't use numbers for the beginning of variable names:
$1foo = 'foo'; print $1foo;
The above will also return an error.
Implementation with Guzzle library:
use GuzzleHttp\Client;
use GuzzleHttp\RequestOptions;
$httpClient = new Client();
$response = $httpClient->post(
'https://postman-echo.com/post',
[
RequestOptions::BODY => 'POST raw request content',
RequestOptions::HEADERS => [
'Content-Type' => 'application/x-www-form-urlencoded',
],
]
);
echo(
$response->getBody()->getContents()
);
PHP CURL extension:
$curlHandler = curl_init();
curl_setopt_array($curlHandler, [
CURLOPT_URL => 'https://postman-echo.com/post',
CURLOPT_RETURNTRANSFER => true,
/**
* Specify POST method
*/
CURLOPT_POST => true,
/**
* Specify request content
*/
CURLOPT_POSTFIELDS => 'POST raw request content',
]);
$response = curl_exec($curlHandler);
curl_close($curlHandler);
echo($response);
So, I've really tried to understand this, but it seems that Django still doesn't make this very straightforward. I'm not all that dumb, but I just can't see any (somewhat) simple solution.
I find it generally pretty ugly to have to override the Admin views for this sort of thing, and every example I find never fully applies to the Admin views.
This is such a common circumstance with the models I make that I find it appalling that there's no obvious solution to this...
I've got these classes:
# models.py
class Company(models.Model):
# ...
class Contract(models.Model):
company = models.ForeignKey(Company)
locations = models.ManyToManyField('Location')
class Location(models.Model):
company = models.ForeignKey(Company)
This creates a problem when setting up the Admin for Company, because it has inlines for both Contract and Location, and Contract's m2m options for Location are not properly filtered according to the Company that you're currently editing.
In short, I would need some admin option to do something like this:
# admin.py
class LocationInline(admin.TabularInline):
model = Location
class ContractInline(admin.TabularInline):
model = Contract
class CompanyAdmin(admin.ModelAdmin):
inlines = (ContractInline, LocationInline)
inline_filter = dict(Location__company='self')
Ultimately I wouldn't care if the filtering process was placed on the base CompanyAdmin, or if it was placed on the ContractInline. (Placing it on the inline makes more sense, but it makes it hard to reference the base Contract as 'self'.)
Is there anyone out there who knows of something as straightforward as this badly needed shortcut? Back when I made PHP admins for this sort of thing, this was considered basic functionality! In fact, it was always automatic, and had to be disabled if you really didn't want it!
As said before, you code will not work the way it is. A solution to that would be using a callback function, but if you think it would carry you to a 'Callback hell', you can search for "Promisses".
A possible solution using a callback function:
//DECLARE numberofDocs OUT OF FUNCTIONS
var numberofDocs;
userModel.count({}, setNumberofDocuments); //this search all DOcuments in a Collection
if you want to search the number of documents based on a query, you can do this:
userModel.count({yourQueryGoesHere}, setNumberofDocuments);
setNumberofDocuments is a separeted function :
var setNumberofDocuments = function(err, count){
if(err) return handleError(err);
numberofDocs = count;
};
Now you can get the number of Documents anywhere with a getFunction:
function getNumberofDocs(){
return numberofDocs;
}
var number = getNumberofDocs();
In addition , you use this asynchronous function inside a synchronous one by using a callback, example:
function calculateNumberOfDoc(someParameter, setNumberofDocuments){
userModel.count({}, setNumberofDocuments); //this search all DOcuments in a Collection
setNumberofDocuments(true);
}
Hope it can help others. :)
Use the decimal module. But if you must use floats and still somehow coerce them into a given number of decimal points converting to string an back provides a (rather clumsy, I'm afraid) method of doing it.
>>> q = 1324343032.324325235 * 1000 / 1000
>>> a = "%.3f" % q
>>> a
'1324343032.324'
>>> b = float(a)
>>> b
1324343032.324
So:
float("%3.f" % q)
matlab function:
function [lineAngle] = getLineAngle(x1, y1, x2, y2)
deltaY = y2 - y1;
deltaX = x2 - x1;
lineAngle = rad2deg(atan2(deltaY, deltaX));
if deltaY < 0
lineAngle = lineAngle + 360;
end
end
Since SDK 21
LOLLIPOP
it is possible to use the following to get current battery level as a percentage:
BatteryManager bm = (BatteryManager) context.getSystemService(BATTERY_SERVICE);
int batLevel = bm.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);
Read BatteryManager | Android Developers - BATTERY_PROPERTY_CAPACITY
You can use the IF
statement in a new cell to replace text, such as:
=IF(A4="C", "Other", A4)
This will check and see if cell value A4 is "C", and if it is, it replaces it with the text "Other"; otherwise, it uses the contents of cell A4.
EDIT
Assuming that the Employee_Count
values are in B1-B10, you can use this:
=IF(B1=LARGE($B$1:$B$10, 10), "Other", B1)
This function doesn't even require the data to be sorted; the LARGE
function will find the 10th largest number in the series, and then the rest of the formula will compare against that.
According to the man page the -P flag is:
-P prefix --directory-prefix=prefix Set directory prefix to prefix. The directory prefix is the directory where all other files and subdirectories will be saved to, i.e. the top of the retrieval tree. The default is . (the current directory).
This mean that it only specifies the destination but where to save the directory tree. It does not flatten the tree into just one directory. As mentioned before the -nd flag actually does that.
@Jon in the future it would be beneficial to describe what the flag does so we understand how something works.
The best way using a button is
<input type= 'button' onclick='javascript:history.back();return false;' value='Back'>
The font-min-size
and font-max-size
CSS properties were removed from the CSS Fonts Module Level 4 specification (and never implemented in browsers AFAIK). And the CSS Working Group replaced the CSS examples with font-size: clamp(...)
which doesn't have the greatest browser support yet so we'll have to wait for browsers to support it. See example in https://developer.mozilla.org/en-US/docs/Web/CSS/clamp#Examples.
I did the following steps to resolve the issue. On the branch which was giving me the error:
git pull origin [branch-name]<current branch>
When you compare two DataFrames, you must ensure that the number of records in the first DataFrame matches with the number of records in the second DataFrame. In our example, each of the two DataFrames had 4 records, with 4 products and 4 prices.
If, for example, one of the DataFrames had 5 products, while the other DataFrame had 4 products, and you tried to run the comparison, you would get the following error:
ValueError: Can only compare identically-labeled Series objects
this should work
import pandas as pd
import numpy as np
firstProductSet = {'Product1': ['Computer','Phone','Printer','Desk'],
'Price1': [1200,800,200,350]
}
df1 = pd.DataFrame(firstProductSet,columns= ['Product1', 'Price1'])
secondProductSet = {'Product2': ['Computer','Phone','Printer','Desk'],
'Price2': [900,800,300,350]
}
df2 = pd.DataFrame(secondProductSet,columns= ['Product2', 'Price2'])
df1['Price2'] = df2['Price2'] #add the Price2 column from df2 to df1
df1['pricesMatch?'] = np.where(df1['Price1'] == df2['Price2'], 'True', 'False') #create new column in df1 to check if prices match
df1['priceDiff?'] = np.where(df1['Price1'] == df2['Price2'], 0, df1['Price1'] - df2['Price2']) #create new column in df1 for price diff
print (df1)
example from https://datatofish.com/compare-values-dataframes/
Why not just using
<div [ngClass]="classes"> </div>
https://angular.io/docs/ts/latest/api/common/index/NgClass-directive.html
You can resolve this in several ways:
g++
in stead of gcc
: g++ -g -o MatSim MatSim.cpp
-lstdc++
: gcc -g -o MatSim MatSim.cpp -lstdc++
<string.h>
by <string>
This is a linker problem, not a compiler issue. The same problem is covered in the question iostream linker error – it explains what is going on.
If there is a null
in an array and you want to avoid it:
db.test.find({"contain" : {$ne :[] }}).pretty()
Ctrl + F11, numpad 7 and numpad 9 don't work on my Ubuntu box, but Ctrl + F12 does.
Here's my simple solution. That does not require any dependency.
However, the date will be in string format. If you want the time then change the substring values
print(new DateTime.now()
.toString()
.substring(0,10)
); // 2020-06-10
If you're looking for currency formatting (which you didn't specify, but it seems that is what you're looking for) try the NumberFormat
class. It's very simple:
double d = 2.3d;
NumberFormat formatter = NumberFormat.getCurrencyInstance();
String output = formatter.format(d);
Which will output (depending on locale):
$2.30
Also, if currency isn't required (just the exact two decimal places) you can use this instead:
NumberFormat formatter = NumberFormat.getNumberInstance();
formatter.setMinimumFractionDigits(2);
formatter.setMaximumFractionDigits(2);
String output = formatter.format(d);
Which will output 2.30
CHARINDEX is what you are looking for
select CHARINDEX('@', '[email protected]')
-----------
8
(1 row(s) affected)
-or-
select CHARINDEX('c', 'abcde')
-----------
3
(1 row(s) affected)
How about something like this:
var MyNamespace = {
convertToBoolean: function (value) {
//VALIDATE INPUT
if (typeof value === 'undefined' || value === null) return false;
//DETERMINE BOOLEAN VALUE FROM STRING
if (typeof value === 'string') {
switch (value.toLowerCase()) {
case 'true':
case 'yes':
case '1':
return true;
case 'false':
case 'no':
case '0':
return false;
}
}
//RETURN DEFAULT HANDLER
return Boolean(value);
}
};
Then you can use it like this:
MyNamespace.convertToBoolean('true') //true
MyNamespace.convertToBoolean('no') //false
MyNamespace.convertToBoolean('1') //true
MyNamespace.convertToBoolean(0) //false
I have not tested it for performance, but converting from type to type should not happen too often otherwise you open your app up to instability big time!
patterns[1]="1\.2\.3\.4.*Has exploded"
patterns[2]="5\.6\.7\.8.*Has died"
patterns[3]="\!9\.10\.11\.12.*Has exploded"
for i in {1..3}
do
grep "${patterns[$i]}" logfile.log
done
should be the the same as
egrep "(1\.2\.3\.4.*Has exploded|5\.6\.7\.8.*Has died)" logfile.log | egrep -v "9\.10\.11\.12.*Has exploded"
just get rid of those speech marks
Sub test()
Dim thesentence As String
thesentence = InputBox("Type the filename with full extension", "Raw Data File")
Range("A1").Value = thesentence
If Dir(thesentence) <> "" Then
MsgBox "File exists."
Else
MsgBox "File doesn't exist."
End If
End Sub
This is the one I like:
Option Explicit
Enum IsFileOpenStatus
ExistsAndClosedOrReadOnly = 0
ExistsAndOpenSoBlocked = 1
NotExists = 2
End Enum
Function IsFileReadOnlyOpen(FileName As String) As IsFileOpenStatus
With New FileSystemObject
If Not .FileExists(FileName) Then
IsFileReadOnlyOpen = 2 ' NotExists = 2
Exit Function 'Or not - I don't know if you want to create the file or exit in that case.
End If
End With
Dim iFilenum As Long
Dim iErr As Long
On Error Resume Next
iFilenum = FreeFile()
Open FileName For Input Lock Read As #iFilenum
Close iFilenum
iErr = Err
On Error GoTo 0
Select Case iErr
Case 0: IsFileReadOnlyOpen = 0 'ExistsAndClosedOrReadOnly = 0
Case 70: IsFileReadOnlyOpen = 1 'ExistsAndOpenSoBlocked = 1
Case Else: IsFileReadOnlyOpen = 1 'Error iErr
End Select
End Function 'IsFileReadOnlyOpen
Just to add one case to unutbu's list.
One of the biggest practical differences for me of numpy ndarrays compared to numpy matrices or matrix languages like matlab, is that the dimension is not preserved in reduce operations. Matrices are always 2d, while the mean of an array, for example, has one dimension less.
For example demean rows of a matrix or array:
with matrix
>>> m = np.mat([[1,2],[2,3]])
>>> m
matrix([[1, 2],
[2, 3]])
>>> mm = m.mean(1)
>>> mm
matrix([[ 1.5],
[ 2.5]])
>>> mm.shape
(2, 1)
>>> m - mm
matrix([[-0.5, 0.5],
[-0.5, 0.5]])
with array
>>> a = np.array([[1,2],[2,3]])
>>> a
array([[1, 2],
[2, 3]])
>>> am = a.mean(1)
>>> am.shape
(2,)
>>> am
array([ 1.5, 2.5])
>>> a - am #wrong
array([[-0.5, -0.5],
[ 0.5, 0.5]])
>>> a - am[:, np.newaxis] #right
array([[-0.5, 0.5],
[-0.5, 0.5]])
I also think that mixing arrays and matrices gives rise to many "happy" debugging hours. However, scipy.sparse matrices are always matrices in terms of operators like multiplication.
To stop autostart of mysql on boot, the following worked for me with mysql 8.0.12
installed using Homebrew in macOS Mojave 10.14.1
:
rm -rf ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist
Edit: (after the code change)
There is no way for us to tell you whether you need or not to call your parent's __init__
(or any other function). Inheritance obviously would work without such call. It all depends on the logic of your code: for example, if all your __init__
is done in parent class, you can just skip child-class __init__
altogether.
consider the following example:
>>> class A:
def __init__(self, val):
self.a = val
>>> class B(A):
pass
>>> class C(A):
def __init__(self, val):
A.__init__(self, val)
self.a += val
>>> A(4).a
4
>>> B(5).a
5
>>> C(6).a
12
I’d suggest you find yourself a 3rd party tool for this such as ApexSQL Search (there are probably others out there too but I use this one because it’s free).
If you really want to go the SQL way you can try using stored procedure created by Sorna Kumar Muthuraj – copied code is below. Just execute this stored procedure for all tables in your schema (easy with dynamics SQL)
CREATE PROCEDURE SearchTables
@Tablenames VARCHAR(500)
,@SearchStr NVARCHAR(60)
,@GenerateSQLOnly Bit = 0
AS
/*
Parameters and usage
@Tablenames -- Provide a single table name or multiple table name with comma seperated.
If left blank , it will check for all the tables in the database
@SearchStr -- Provide the search string. Use the '%' to coin the search.
EX : X%--- will give data staring with X
%X--- will give data ending with X
%X%--- will give data containig X
@GenerateSQLOnly -- Provide 1 if you only want to generate the SQL statements without seraching the database.
By default it is 0 and it will search.
Samples :
1. To search data in a table
EXEC SearchTables @Tablenames = 'T1'
,@SearchStr = '%TEST%'
The above sample searches in table T1 with string containing TEST.
2. To search in a multiple table
EXEC SearchTables @Tablenames = 'T2'
,@SearchStr = '%TEST%'
The above sample searches in tables T1 & T2 with string containing TEST.
3. To search in a all table
EXEC SearchTables @Tablenames = '%'
,@SearchStr = '%TEST%'
The above sample searches in all table with string containing TEST.
4. Generate the SQL for the Select statements
EXEC SearchTables @Tablenames = 'T1'
,@SearchStr = '%TEST%'
,@GenerateSQLOnly = 1
*/
SET NOCOUNT ON
DECLARE @CheckTableNames Table
(
Tablename sysname
)
DECLARE @SQLTbl TABLE
(
Tablename SYSNAME
,WHEREClause VARCHAR(MAX)
,SQLStatement VARCHAR(MAX)
,Execstatus BIT
)
DECLARE @sql VARCHAR(MAX)
DECLARE @tmpTblname sysname
IF LTRIM(RTRIM(@Tablenames)) IN ('' ,'%')
BEGIN
INSERT INTO @CheckTableNames
SELECT Name
FROM sys.tables
END
ELSE
BEGIN
SELECT @sql = 'SELECT ''' + REPLACE(@Tablenames,',',''' UNION SELECT ''') + ''''
INSERT INTO @CheckTableNames
EXEC(@sql)
END
INSERT INTO @SQLTbl
( Tablename,WHEREClause)
SELECT SCh.name + '.' + ST.NAME,
(
SELECT '[' + SC.name + ']' + ' LIKE ''' + @SearchStr + ''' OR ' + CHAR(10)
FROM SYS.columns SC
JOIN SYS.types STy
ON STy.system_type_id = SC.system_type_id
AND STy.user_type_id =SC.user_type_id
WHERE STY.name in ('varchar','char','nvarchar','nchar')
AND SC.object_id = ST.object_id
ORDER BY SC.name
FOR XML PATH('')
)
FROM SYS.tables ST
JOIN @CheckTableNames chktbls
ON chktbls.Tablename = ST.name
JOIN SYS.schemas SCh
ON ST.schema_id = SCh.schema_id
WHERE ST.name <> 'SearchTMP'
GROUP BY ST.object_id, SCh.name + '.' + ST.NAME ;
UPDATE @SQLTbl
SET SQLStatement = 'SELECT * INTO SearchTMP FROM ' + Tablename + ' WHERE ' + substring(WHEREClause,1,len(WHEREClause)-5)
DELETE FROM @SQLTbl
WHERE WHEREClause IS NULL
WHILE EXISTS (SELECT 1 FROM @SQLTbl WHERE ISNULL(Execstatus ,0) = 0)
BEGIN
SELECT TOP 1 @tmpTblname = Tablename , @sql = SQLStatement
FROM @SQLTbl
WHERE ISNULL(Execstatus ,0) = 0
IF @GenerateSQLOnly = 0
BEGIN
IF OBJECT_ID('SearchTMP','U') IS NOT NULL
DROP TABLE SearchTMP
EXEC (@SQL)
IF EXISTS(SELECT 1 FROM SearchTMP)
BEGIN
SELECT Tablename=@tmpTblname,* FROM SearchTMP
END
END
ELSE
BEGIN
PRINT REPLICATE('-',100)
PRINT @tmpTblname
PRINT REPLICATE('-',100)
PRINT replace(@sql,'INTO SearchTMP','')
END
UPDATE @SQLTbl
SET Execstatus = 1
WHERE Tablename = @tmpTblname
END
SET NOCOUNT OFF
go
Use jline3:
Example:
Terminal terminal = TerminalBuilder.builder()
.jna(true)
.system(true)
.build();
// raw mode means we get keypresses rather than line buffered input
terminal.enterRawMode();
reader = terminal .reader();
...
int read = reader.read();
....
reader.close();
terminal.close();
In case of Linear Regression the outcome is continuous while in case of Logistic Regression outcome is discrete (not continuous)
To perform Linear regression we require a linear relationship between the dependent and independent variables. But to perform Logistic regression we do not require a linear relationship between the dependent and independent variables.
Linear Regression is all about fitting a straight line in the data while Logistic Regression is about fitting a curve to the data.
Linear Regression is a regression algorithm for Machine Learning while Logistic Regression is a classification Algorithm for machine learning.
Linear regression assumes gaussian (or normal) distribution of dependent variable. Logistic regression assumes binomial distribution of dependent variable.
Matt's answer is the right one for older Pythons and Kevin's the right answer for newer ones.
If you wish not to copy the function for silentremove
, this functionality is exposed in path.py as remove_p:
from path import Path
Path(filename).remove_p()
In addition to Tony's answer, if you are looking to find out where your PL/SQL program is spending it's time, it is also worth checking out this part of the Oracle PL/SQL documentation.
Based on your comment it looks like your'e only adding the new column if: mysql_query("SELECT * FROM assessment");
returns false. That's probably not what you wanted. Try removing the '!' on front of $sql in the first 'if' statement. So your code will look like:
$sql=mysql_query("SELECT * FROM assessment");
if ($sql) {
mysql_query("ALTER TABLE assessment ADD q6 INT(1) NOT NULL AFTER q5");
echo 'Q6 created';
}else...
naturalWidth and naturalHeight
var img = document.createElement("img");
img.onload = function (event)
{
console.log("natural:", img.naturalWidth, img.naturalHeight);
console.log("width,height:", img.width, img.height);
console.log("offsetW,offsetH:", img.offsetWidth, img.offsetHeight);
}
img.src = "image.jpg";
document.body.appendChild(img);
// css for tests
img { width:50%;height:50%; }
I found that JimTheDev's answer only worked when the state definition had cache:false
set. With the view cached, you can do $ionicHistory.clearCache()
and then $state.go('app.fooDestinationView')
if you're navigating from one state to the one that is cached but needs refreshing.
See my answer here as it requires a simple change to Ionic and I created a pull request: https://stackoverflow.com/a/30224972/756177
Use tiles. It saved my life.
But if you can't, there's the include tag, making it similar to php.
The body tag might not actually do what you need it to, unless you have super simple content. The body tag is used to define the body of a specified element. Take a look at this example:
<jsp:element name="${content.headerName}"
xmlns:jsp="http://java.sun.com/JSP/Page">
<jsp:attribute name="lang">${content.lang}</jsp:attribute>
<jsp:body>${content.body}</jsp:body>
</jsp:element>
You specify the element name, any attributes that element might have ("lang" in this case), and then the text that goes in it--the body. So if
content.headerName = h1
,content.lang = fr
, andcontent.body = Heading in French
Then the output would be
<h1 lang="fr">Heading in French</h1>
The answer given works but disables outgoing links. Below a version with an added bonus ease out (swing) and respects outgoing links.
$(document).ready(function () {
$('a[href^="#"]').on('click', function (e) {
e.preventDefault();
var target = this.hash;
var $target = $(target);
$('html, body').stop().animate({
'scrollTop': $target.offset().top
}, 900, 'swing', function () {
window.location.hash = target;
});
});
});
In general, that's not how systems use GET requests. So, it will be hard to get your libraries to play along. In fact, the spec says that "If the request method is a case-sensitive match for GET or HEAD act as if data is null." So, I think you are out of luck unless the browser you are using doesn't respect that part of the spec.
You can probably setup an endpoint on your own server for a POST ajax request, then redirect that in your server code to a GET request with a body.
If you aren't absolutely tied to GET requests with the body being the data, you have two options.
POST with data: This is probably what you want. If you are passing data along, that probably means you are modifying some model or performing some action on the server. These types of actions are typically done with POST requests.
GET with query string data: You can convert your data to query string parameters and pass them along to the server that way.
url: 'somesite.com/models/thing?ids=1,2,3'
It's because, even in "raw" strings (=strings with an r
before the starting quote(s)), an unescaped escape character cannot be the last character in the string. This should work instead:
'\\ '[0]
This is a very simple solution, but it works for me:
<!--TEXT-AREA-->_x000D_
<textarea id="textBox1" name="content" TextMode="MultiLine" onkeyup="setHeight('textBox1');" onkeydown="setHeight('textBox1');">Hello World</textarea>_x000D_
_x000D_
<!--JAVASCRIPT-->_x000D_
<script type="text/javascript">_x000D_
function setHeight(fieldId){_x000D_
document.getElementById(fieldId).style.height = document.getElementById(fieldId).scrollHeight+'px';_x000D_
}_x000D_
setHeight('textBox1');_x000D_
</script>
_x000D_
What he wants to say is:
"If you have two classes which share most of the same properties you can cast an object from class a
to class b
and automatically make the system understand the assignment via the shared property names?"
Option 1: Use reflection
Disadvantage : It's gonna slow you down more than you think.
Option 2: Make one class derive from another, the first one with common properties and other an extension of that.
Disadvantage: Coupled! if your're doing that for two layers in your application then the two layers will be coupled!
Let there be:
class customer
{
public string firstname { get; set; }
public string lastname { get; set; }
public int age { get; set; }
}
class employee
{
public string firstname { get; set; }
public int age { get; set; }
}
Now here is an extension for Object type:
public static T Cast<T>(this Object myobj)
{
Type objectType = myobj.GetType();
Type target = typeof(T);
var x = Activator.CreateInstance(target, false);
var z = from source in objectType.GetMembers().ToList()
where source.MemberType == MemberTypes.Property select source ;
var d = from source in target.GetMembers().ToList()
where source.MemberType == MemberTypes.Property select source;
List<MemberInfo> members = d.Where(memberInfo => d.Select(c => c.Name)
.ToList().Contains(memberInfo.Name)).ToList();
PropertyInfo propertyInfo;
object value;
foreach (var memberInfo in members)
{
propertyInfo = typeof(T).GetProperty(memberInfo.Name);
value = myobj.GetType().GetProperty(memberInfo.Name).GetValue(myobj,null);
propertyInfo.SetValue(x,value,null);
}
return (T)x;
}
Now you use it like this:
static void Main(string[] args)
{
var cus = new customer();
cus.firstname = "John";
cus.age = 3;
employee emp = cus.Cast<employee>();
}
Method cast checks common properties between two objects and does the assignment automatically.
Why don't you simply use set_index
method?
In : col = ['a','b','c']
In : data = DataFrame([[1,2,3],[10,11,12],[20,21,22]],columns=col)
In : data
Out:
a b c
0 1 2 3
1 10 11 12
2 20 21 22
In : data2 = data.set_index('a')
In : data2
Out:
b c
a
1 2 3
10 11 12
20 21 22
Firstly, the Django docs strongly recommend not using NULL values for string-based fields such as CharField or TextField. Read the documentation for the explanation:
https://docs.djangoproject.com/en/dev/ref/models/fields/#null
Solution: You can also chain together methods on QuerySets, I think. Try this:
Name.objects.exclude(alias__isnull=True).exclude(alias="")
That should give you the set you're looking for.
You need to re-parse the form after adding dynamic content in order to validate the content
$('form').data('validator', null);
$.validator.unobtrusive.parse($('form'));
To emphasize a point made by @MatteoItalia, the efficiency difference is where the data is stored. Heap memory (required with vector
) requires a call to the system to allocate memory and this can be expensive if you are counting cycles. Stack memory (possible for array
) is virtually "zero-overhead" in terms of time, because the memory is allocated by just adjusting the stack pointer and it is done just once on entry to a function. The stack also avoids memory fragmentation. To be sure, std::array
won't always be on the stack; it depends on where you allocate it, but it will still involve one less memory allocation from the heap compared to vector. If you have a
definitely use a std::array
over a vector. If any of those requirements is not true, then use a std::vector
.
If you are running ZSH shell in MacOS you should rerun the installation and when you be asked for this question:
Modify profile to update your $PATH and enable shell command
completion?
answer YES
and
Enter a path to an rc file to update, or leave blank to use
[/Users/your_user/.bash_profile]:
answer(your zshrc path): /Users/your_user/.zshrc
Restart Terminal and that's all.
I did a little experiment to see which of these methods
string.startswith('hello')
string.rfind('hello') == 0
string.rpartition('hello')[0] == ''
string.rindex('hello') == 0
are most efficient to return whether a certain string begins with another string.
Here is the result of one of the many test runs I've made, where each list is ordered to show the least time it took (in seconds) to parse 5 million of each of the above expressions during each iteration of the while
loop I used:
['startswith: 1.37', 'rpartition: 1.38', 'rfind: 1.62', 'rindex: 1.62']
['startswith: 1.28', 'rpartition: 1.44', 'rindex: 1.67', 'rfind: 1.68']
['startswith: 1.29', 'rpartition: 1.42', 'rindex: 1.63', 'rfind: 1.64']
['startswith: 1.28', 'rpartition: 1.43', 'rindex: 1.61', 'rfind: 1.62']
['rpartition: 1.48', 'startswith: 1.48', 'rfind: 1.62', 'rindex: 1.67']
['startswith: 1.34', 'rpartition: 1.43', 'rfind: 1.64', 'rindex: 1.64']
['startswith: 1.36', 'rpartition: 1.44', 'rindex: 1.61', 'rfind: 1.63']
['startswith: 1.29', 'rpartition: 1.37', 'rindex: 1.64', 'rfind: 1.67']
['startswith: 1.34', 'rpartition: 1.44', 'rfind: 1.66', 'rindex: 1.68']
['startswith: 1.44', 'rpartition: 1.41', 'rindex: 1.61', 'rfind: 2.24']
['startswith: 1.34', 'rpartition: 1.45', 'rindex: 1.62', 'rfind: 1.67']
['startswith: 1.34', 'rpartition: 1.38', 'rindex: 1.67', 'rfind: 1.74']
['rpartition: 1.37', 'startswith: 1.38', 'rfind: 1.61', 'rindex: 1.64']
['startswith: 1.32', 'rpartition: 1.39', 'rfind: 1.64', 'rindex: 1.61']
['rpartition: 1.35', 'startswith: 1.36', 'rfind: 1.63', 'rindex: 1.67']
['startswith: 1.29', 'rpartition: 1.36', 'rfind: 1.65', 'rindex: 1.84']
['startswith: 1.41', 'rpartition: 1.44', 'rfind: 1.63', 'rindex: 1.71']
['startswith: 1.34', 'rpartition: 1.46', 'rindex: 1.66', 'rfind: 1.74']
['startswith: 1.32', 'rpartition: 1.46', 'rfind: 1.64', 'rindex: 1.74']
['startswith: 1.38', 'rpartition: 1.48', 'rfind: 1.68', 'rindex: 1.68']
['startswith: 1.35', 'rpartition: 1.42', 'rfind: 1.63', 'rindex: 1.68']
['startswith: 1.32', 'rpartition: 1.46', 'rfind: 1.65', 'rindex: 1.75']
['startswith: 1.37', 'rpartition: 1.46', 'rfind: 1.74', 'rindex: 1.75']
['startswith: 1.31', 'rpartition: 1.48', 'rfind: 1.67', 'rindex: 1.74']
['startswith: 1.44', 'rpartition: 1.46', 'rindex: 1.69', 'rfind: 1.74']
['startswith: 1.44', 'rpartition: 1.42', 'rfind: 1.65', 'rindex: 1.65']
['startswith: 1.36', 'rpartition: 1.44', 'rfind: 1.64', 'rindex: 1.74']
['startswith: 1.34', 'rpartition: 1.46', 'rfind: 1.61', 'rindex: 1.74']
['startswith: 1.35', 'rpartition: 1.56', 'rfind: 1.68', 'rindex: 1.69']
['startswith: 1.32', 'rpartition: 1.48', 'rindex: 1.64', 'rfind: 1.65']
['startswith: 1.28', 'rpartition: 1.43', 'rfind: 1.59', 'rindex: 1.66']
I believe that it is pretty obvious from the start that the startswith
method would come out the most efficient, as returning whether a string begins with the specified string is its main purpose.
What surprises me is that the seemingly impractical string.rpartition('hello')[0] == ''
method always finds a way to be listed first, before the string.startswith('hello')
method, every now and then. The results show that using str.partition
to determine if a string starts with another string is more efficient then using both rfind
and rindex
.
Another thing I've noticed is that string.rindex('hello') == 0
and string.rindex('hello') == 0
have a good battle going on, each rising from fourth to third place, and dropping from third to fourth place, which makes sense, as their main purposes are the same.
Here is the code:
from time import perf_counter
string = 'hello world'
places = dict()
while True:
start = perf_counter()
for _ in range(5000000):
string.startswith('hello')
end = perf_counter()
places['startswith'] = round(end - start, 2)
start = perf_counter()
for _ in range(5000000):
string.rfind('hello') == 0
end = perf_counter()
places['rfind'] = round(end - start, 2)
start = perf_counter()
for _ in range(5000000):
string.rpartition('hello')[0] == ''
end = perf_counter()
places['rpartition'] = round(end - start, 2)
start = perf_counter()
for _ in range(5000000):
string.rindex('hello') == 0
end = perf_counter()
places['rindex'] = round(end - start, 2)
print([f'{b}: {str(a).ljust(4, "4")}' for a, b in sorted(i[::-1] for i in places.items())])
You can use Environment Injector Plugin to set environment variables in Jenkins at job and node levels. Below I will show how to set them at job level.
Manage Jenkins > Manage Plugins
and install the plugin.Configure
screenAdd build step
in Build
section and select Inject environment variables
If you need to define a new environment variable depending on some conditions (e.g. job parameters), then you can refer to this answer.
The best method to convert multiple images to PDF I have tried so far is to use PIL
purely. It's quite simple yet powerful:
from PIL import Image
im1 = Image.open("/Users/apple/Desktop/bbd.jpg")
im2 = Image.open("/Users/apple/Desktop/bbd1.jpg")
im3 = Image.open("/Users/apple/Desktop/bbd2.jpg")
im_list = [im2,im3]
pdf1_filename = "/Users/apple/Desktop/bbd1.pdf"
im1.save(pdf1_filename, "PDF" ,resolution=100.0, save_all=True, append_images=im_list)
Just set save_all
to True
and append_images
to the list of images which you want to add.
You might encounter the AttributeError: 'JpegImageFile' object has no attribute 'encoderinfo'
. The solution is here Error while saving multiple JPEGs as a multi-page PDF
Note:Install the newest PIL
to make sure save_all
argument is available for PDF.
export my store variable
export const store = createStore(rootReducer, applyMiddleware(ReduxThunk));
in action file or your file need them import this (store)
import {store} from "./path...";
this step get sate from store variable with function
const state = store.getState();
and get all of state your app
If you have a number, for example 65, and if you want to get the corresponding ASCII character, you can use the chr
function, like this
>>> chr(65)
'A'
similarly if you have 97,
>>> chr(97)
'a'
EDIT: The above solution works for 8 bit characters or ASCII characters. If you are dealing with unicode characters, you have to specify unicode value of the starting character of the alphabet to ord
and the result has to be converted using unichr
instead of chr
.
>>> print unichr(ord(u'\u0B85'))
?
>>> print unichr(1 + ord(u'\u0B85'))
?
NOTE: The unicode characters used here are of the language called "Tamil", my first language. This is the unicode table for the same http://www.unicode.org/charts/PDF/U0B80.pdf
Dupx
Dupx is a simple *nix utility to redirect standard output/input/error of an already running process.
Motivation
I've often found myself in a situation where a process I started on a remote system via SSH takes much longer than I had anticipated. I need to break the SSH connection, but if I do so, the process will die if it tries to write something on stdout/error of a broken pipe. I wish I could suspend the process with ^Z and then do a
bg %1 >/tmp/stdout 2>/tmp/stderr
Unfortunately this will not work (in shells I know).
Maybe I completely misread your question, but the "I am hoping to retain the columns that do not match after the bind" makes me think you are looking for a left join
or right join
similar to an SQL query. R has the merge
function that lets you specify left, right, or inner joins similar to joining tables in SQL.
There is already a great question and answer on this topic here: How to join (merge) data frames (inner, outer, left, right)?
Your code won't work because you haven't assigned anything to n
before you first use it. Try this:
def oracle():
n = None
while n != 'Correct':
# etc...
A more readable approach is to move the test until later and use a break
:
def oracle():
guess = 50
while True:
print 'Current number = {0}'.format(guess)
n = raw_input("lower, higher or stop?: ")
if n == 'stop':
break
# etc...
Also input
in Python 2.x reads a line of input and then evaluates it. You want to use raw_input
.
Note: In Python 3.x, raw_input
has been renamed to input
and the old input
method no longer exists.
I was not actually able to render an image without borders or axis data based on any of the code snippets here (even the one accepted at the answer). After digging through some API documentation, I landed on this code to render my image
plt.axis('off')
plt.tick_params(axis='both', left='off', top='off', right='off', bottom='off', labelleft='off', labeltop='off', labelright='off', labelbottom='off')
plt.savefig('foo.png', dpi=100, bbox_inches='tight', pad_inches=0.0)
I used the tick_params
call to basically shut down any extra information that might be rendered and I have a perfect graph in my output file.
Heres a good one with NSRegularExpression that's working for me.
[text rangeOfString:@"^.+@.+\\..{2,}$" options:NSRegularExpressionSearch].location != NSNotFound;
You can insert whatever regex you want but I like being able to do it in one line.
I came across this post looking for a "shaking" implementation. millenomi's answer worked well for me, although i was looking for something that required a bit more "shaking action" to trigger. I've replaced to Boolean value with an int shakeCount. I also reimplemented the L0AccelerationIsShaking() method in Objective-C. You can tweak the ammount of shaking required by tweaking the ammount added to shakeCount. I'm not sure i've found the optimal values yet, but it seems to be working well so far. Hope this helps someone:
- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration {
if (self.lastAcceleration) {
if ([self AccelerationIsShakingLast:self.lastAcceleration current:acceleration threshold:0.7] && shakeCount >= 9) {
//Shaking here, DO stuff.
shakeCount = 0;
} else if ([self AccelerationIsShakingLast:self.lastAcceleration current:acceleration threshold:0.7]) {
shakeCount = shakeCount + 5;
}else if (![self AccelerationIsShakingLast:self.lastAcceleration current:acceleration threshold:0.2]) {
if (shakeCount > 0) {
shakeCount--;
}
}
}
self.lastAcceleration = acceleration;
}
- (BOOL) AccelerationIsShakingLast:(UIAcceleration *)last current:(UIAcceleration *)current threshold:(double)threshold {
double
deltaX = fabs(last.x - current.x),
deltaY = fabs(last.y - current.y),
deltaZ = fabs(last.z - current.z);
return
(deltaX > threshold && deltaY > threshold) ||
(deltaX > threshold && deltaZ > threshold) ||
(deltaY > threshold && deltaZ > threshold);
}
PS: I've set the update interval to 1/15th of a second.
[[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / 15)];
Typescript fails in your case because it expects all the fields to be present. Use Record and Partial utility types to solve it.
Record<string, Partial<IPerson>>
interface IPerson {
firstName: string;
lastName: string;
}
var persons: Record<string, Partial<IPerson>> = {
"p1": { firstName: "F1", lastName: "L1" },
"p2": { firstName: "F2" }
};
Explanation.
Alternate.
If you wish to make last name optional you can append a ? Typescript will know that it's optional.
lastName?: string;
https://www.typescriptlang.org/docs/handbook/utility-types.html
exit code 139 (people say this means memory fragmentation)
No, it means that your program died with signal 11
(SIGSEGV
on Linux and most other UNIXes), also known as segmentation fault
.
Could anybody tell me why the run fails but debug doesn't?
Your program exhibits undefined behavior, and can do anything (that includes appearing to work correctly sometimes).
Your first step should be running this program under Valgrind, and fixing all errors it reports.
If after doing the above, the program still crashes, then you should let it dump core (ulimit -c unlimited; ./a.out
) and then analyze that core dump with GDB: gdb ./a.out core
; then use where
command.
argc
is the number of arguments being passed into your program from the command line and argv
is the array of arguments.
You can loop through the arguments knowing the number of them like:
for(int i = 0; i < argc; i++)
{
// argv[i] is the argument at index i
}
You can try like below
DECLARE @sqlCommand NVARCHAR(4000)
DECLARE @ID INT
DECLARE @Name NVARCHAR(100)
SET @ID = 4
SET @sqlCommand = 'SELECT @Name = [Name]
FROM [AdventureWorks2014].[HumanResources].[Department]
WHERE DepartmentID = @ID'
EXEC sp_executesql @sqlCommand, N'@ID INT, @Name NVARCHAR(100) OUTPUT',
@ID = @ID, @Name = @Name OUTPUT
SELECT @Name ReturnedName
Source : blog.sqlauthority.com
Go to your functions.php
page and delete any spaces immediately above or below your PHP tags.
There are some working solutions here already, but here's another one:
>>> import types
>>> class Dummy: pass
>>> type(Dummy) is types.ClassType
True
SELECT mu_file, mudate
FROM flightdata t_ext
WHERE mudate = (SELECT MAX (mudate)
FROM flightdata where mudate < sysdate)
TLDR; Performance-wise Any
seems to be slower (if I have set this up properly to evaluate both values at almost same time)
var list1 = Generate(1000000);
var forceListEval = list1.SingleOrDefault(o => o == "0123456789012");
if (forceListEval != "sdsdf")
{
var s = string.Empty;
var start2 = DateTime.Now;
if (!list1.Exists(o => o == "0123456789012"))
{
var end2 = DateTime.Now;
s += " Exists: " + end2.Subtract(start2);
}
var start1 = DateTime.Now;
if (!list1.Any(o => o == "0123456789012"))
{
var end1 = DateTime.Now;
s +=" Any: " +end1.Subtract(start1);
}
if (!s.Contains("sdfsd"))
{
}
testing list generator:
private List<string> Generate(int count)
{
var list = new List<string>();
for (int i = 0; i < count; i++)
{
list.Add( new string(
Enumerable.Repeat("ABCDEFGHIJKLMNOPQRSTUVWXYZ", 13)
.Select(s =>
{
var cryptoResult = new byte[4];
new RNGCryptoServiceProvider().GetBytes(cryptoResult);
return s[new Random(BitConverter.ToInt32(cryptoResult, 0)).Next(s.Length)];
})
.ToArray()));
}
return list;
}
With 10M records
" Any: 00:00:00.3770377 Exists: 00:00:00.2490249"
With 5M records
" Any: 00:00:00.0940094 Exists: 00:00:00.1420142"
With 1M records
" Any: 00:00:00.0180018 Exists: 00:00:00.0090009"
With 500k, (I also flipped around order in which they get evaluated to see if there is no additional operation associated with whichever runs first.)
" Exists: 00:00:00.0050005 Any: 00:00:00.0100010"
With 100k records
" Exists: 00:00:00.0010001 Any: 00:00:00.0020002"
It would seem Any
to be slower by magnitude of 2.
Edit: For 5 and 10M records I changed the way it generates the list and Exists
suddenly became slower than Any
which implies there's something wrong in the way I am testing.
New testing mechanism:
private static IEnumerable<string> Generate(int count)
{
var cripto = new RNGCryptoServiceProvider();
Func<string> getString = () => new string(
Enumerable.Repeat("ABCDEFGHIJKLMNOPQRSTUVWXYZ", 13)
.Select(s =>
{
var cryptoResult = new byte[4];
cripto.GetBytes(cryptoResult);
return s[new Random(BitConverter.ToInt32(cryptoResult, 0)).Next(s.Length)];
})
.ToArray());
var list = new ConcurrentBag<string>();
var x = Parallel.For(0, count, o => list.Add(getString()));
return list;
}
private static void Test()
{
var list = Generate(10000000);
var list1 = list.ToList();
var forceListEval = list1.SingleOrDefault(o => o == "0123456789012");
if (forceListEval != "sdsdf")
{
var s = string.Empty;
var start1 = DateTime.Now;
if (!list1.Any(o => o == "0123456789012"))
{
var end1 = DateTime.Now;
s += " Any: " + end1.Subtract(start1);
}
var start2 = DateTime.Now;
if (!list1.Exists(o => o == "0123456789012"))
{
var end2 = DateTime.Now;
s += " Exists: " + end2.Subtract(start2);
}
if (!s.Contains("sdfsd"))
{
}
}
Edit2: Ok so to eliminate any influence from generating test data I wrote it all to file and now read it from there.
private static void Test()
{
var list1 = File.ReadAllLines("test.txt").Take(500000).ToList();
var forceListEval = list1.SingleOrDefault(o => o == "0123456789012");
if (forceListEval != "sdsdf")
{
var s = string.Empty;
var start1 = DateTime.Now;
if (!list1.Any(o => o == "0123456789012"))
{
var end1 = DateTime.Now;
s += " Any: " + end1.Subtract(start1);
}
var start2 = DateTime.Now;
if (!list1.Exists(o => o == "0123456789012"))
{
var end2 = DateTime.Now;
s += " Exists: " + end2.Subtract(start2);
}
if (!s.Contains("sdfsd"))
{
}
}
}
10M
" Any: 00:00:00.1640164 Exists: 00:00:00.0750075"
5M
" Any: 00:00:00.0810081 Exists: 00:00:00.0360036"
1M
" Any: 00:00:00.0190019 Exists: 00:00:00.0070007"
500k
" Any: 00:00:00.0120012 Exists: 00:00:00.0040004"
With storyboard:
Make sure that your UITableView top constraint doesn't say "Under top layout guide". Instead it should say "Top space to: Superview" (Superview.Top).
Plus of course in the UIViewController that contains the UITableView uncheck "Adjust Scroll View Insets".
The element outerHTML
property (note: supported by Firefox after version 11) returns the HTML of the entire element.
<div id="new-element-1">Hello world.</div>
<script type="text/javascript"><!--
var element = document.getElementById("new-element-1");
var elementHtml = element.outerHTML;
// <div id="new-element-1">Hello world.</div>
--></script>
Similarly, you can use innerHTML
to get the HTML contained within a given element, or innerText
to get the text inside an element (sans HTML markup).
NOTE: onKeyListener
doesn't work for soft keyboards.
You can set OnKeyListener
for you editText
so you can detect any key press
EDIT: A common mistake we are checking KeyEvent.KEYCODE_BACK
for backspace
, but really it is KeyEvent.KEYCODE_DEL
(Really that name is very confusing! )
editText.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
//You can identify which key pressed buy checking keyCode value with KeyEvent.KEYCODE_
if(keyCode == KeyEvent.KEYCODE_DEL) {
//this is for backspace
}
return false;
}
});
I wondered if it would be possible to avoid some of the disadvantages of using global variables (see e.g. http://wiki.c2.com/?GlobalVariablesAreBad) by using a class namespace rather than a global/module namespace to pass values of variables. The following code indicates that the two methods are essentially identical. There is a slight advantage in using class namespaces as explained below.
The following code fragments also show that attributes or variables may be dynamically created and deleted in both global/module namespaces and class namespaces.
wall.py
# Note no definition of global variables
class router:
""" Empty class """
I call this module 'wall' since it is used to bounce variables off of. It will act as a space to temporarily define global variables and class-wide attributes of the empty class 'router'.
source.py
import wall
def sourcefn():
msg = 'Hello world!'
wall.msg = msg
wall.router.msg = msg
This module imports wall and defines a single function sourcefn
which defines a message and emits it by two different mechanisms, one via globals and one via the router function. Note that the variables wall.msg
and wall.router.message
are defined here for the first time in their respective namespaces.
dest.py
import wall
def destfn():
if hasattr(wall, 'msg'):
print 'global: ' + wall.msg
del wall.msg
else:
print 'global: ' + 'no message'
if hasattr(wall.router, 'msg'):
print 'router: ' + wall.router.msg
del wall.router.msg
else:
print 'router: ' + 'no message'
This module defines a function destfn
which uses the two different mechanisms to receive the messages emitted by source. It allows for the possibility that the variable 'msg' may not exist. destfn
also deletes the variables once they have been displayed.
main.py
import source, dest
source.sourcefn()
dest.destfn() # variables deleted after this call
dest.destfn()
This module calls the previously defined functions in sequence. After the first call to dest.destfn
the variables wall.msg
and wall.router.msg
no longer exist.
The output from the program is:
global: Hello world!
router: Hello world!
global: no message
router: no message
The above code fragments show that the module/global and the class/class variable mechanisms are essentially identical.
If a lot of variables are to be shared, namespace pollution can be managed either by using several wall-type modules, e.g. wall1, wall2 etc. or by defining several router-type classes in a single file. The latter is slightly tidier, so perhaps represents a marginal advantage for use of the class-variable mechanism.
Single line code.. will return true or false
!!(arr.indexOf("val")+1)
For those looking for a Swift version of @amro's answer:
let userDefaults = NSUserDefaults.standardUserDefaults()
if userDefaults.boolForKey("hasRunBefore") == false {
// remove keychain items here
// update the flag indicator
userDefaults.setBool(true, forKey: "hasRunBefore")
userDefaults.synchronize() // forces the app to update the NSUserDefaults
return
}
Click the mse7.exe
installed along with Office typically at \Program Files\Microsoft Office\OFFICE11
.
This will open up the debugger, open the file and then run the debugger in the GUI mode.
If you need this once write:
NSString *stringToSearchThrough = @"-rangeOfString method finds and returns the range of the first occurrence of a given string within the receiver.";
BOOL contains = [stringToSearchThrough rangeOfString:@"occurence of a given string"].location != NSNotFound;
If you want to cut the whitespaces before and behind the word, but keep the middle ones.
You could use:
word = ' Hello World '
stripped = word.strip()
print(stripped)
Have a look at the syntax for adding a remote repo.
git remote add origin <url_of_remote repository>
Example:
git remote add origin [email protected]:peter/first_app.git
Let us dissect the command :
git remote this is used to manage your Central servers for hosting your git repositories.
May be you are using Github for your central repository stuff. I will give you a example and explain the git remote add origin command
Suppose I am working with GitHub and BitBucket for the central servers for the git repositories and have created repositories on both the websites for my first-app project.
Now if I want to push my changes to both these git servers then I will need to tell git how to reach these central repositories. So I will have to add these,
For GitHub
git remote add gh_origin https://github.com/user/first-app-git.git
And For BitBucket
git remote add bb_origin https://[email protected]/user/first-app-git.git
I have used two variables ( as far it is easy for me to call them variables ) gh_origin ( gh FOR GITHUB ) and bb_origin ( bb for BITBUCKET ) just to explain you we can call origin anything we want.
Now after making some changes I will have to send(push) all these changes to central repositories so that other users can see these changes. So I call
Pushing to GitHub
git push gh_origin master
Pushing to BitBucket
git push bb_origin master
gh_origin is holding value of https://github.com/user/first-app-git.git and bb_origin is holding value of https://[email protected]/user/first-app-git.git
This two variables are making my life easier
as whenever I need to send my code changes I need to use this words instead of remembering or typing the URL for the same.
Most of the times you wont see anything except than origin as most of the times you will deal with only one central repository like Github or BitBucket for example.
Annotate your field (or getter) with @Temporal(TemporalType.TIMESTAMP)
, like this:
public class MyEntity {
...
@Temporal(TemporalType.TIMESTAMP)
private java.util.Date myDate;
...
}
That should do the trick.
You can check an example in Plunker over here plunker example filters
filter() {
let storeId = 1;
this.bookFilteredList = this.bookList
.filter((book: Book) => book.storeId === storeId);
this.bookList = this.bookFilteredList;
}
I think you have to store the number on heap. The int ret
variable was on stack and was destructed at the end of execution of function myThread
.
void *myThread()
{
int *ret = malloc(sizeof(int));
if (ret == NULL) {
// ...
}
*ret = 42;
pthread_exit(ret);
}
Don't forget to free
it when you don't need it :)
Another solution is to return the number as value of the pointer, like Neil Butterworth suggests.
You can use the following methods to specify C:\Program Files without a space in it for programs that can't handle spaces in file paths:
'Path to Continuum Reports Subdirectory - Note use DOS equivalent (no spaces)
RepPath = "c:\progra~1\continuum_reports\" or
RepPath = C:\Program Files\Continuum_Reports 'si es para 64 bits.
' Path to Continuum Reports Subdirectory - Note use DOS equivalent (no spaces)
RepPath = "c:\progra~2\continuum_reports\" 'or
RepPath = C:\Program Files (x86)\Continuum_Reports 'si es para 32 bits.
Remove existing origin and add new origin to your project directory
>$ git remote show origin
>$ git remote rm origin
>$ git add .
>$ git commit -m "First commit"
>$ git remote add origin Copied_origin_url
>$ git remote show origin
>$ git push origin master
You can do a custom namespace of events.
$('span').bind('click.doStuff1',function(){doStuff1();});
$('span').bind('click.doStuff2',function(){doStuff2();});
Then, when you need to trigger them you can choose the order.
$('span').trigger('click.doStuff1').trigger('click.doStuff2');
or
$('span').trigger('click.doStuff2').trigger('click.doStuff1');
Also, just triggering click SHOULD trigger both in the order they were bound... so you can still do
$('span').trigger('click');
Yes you can, set the position: relative
for the container and position: absolute
for the help_panel
Yes. You can use the title
attribute on cell elements, with poor usability, or you can use CSS tooltips (several existing questions, possibly duplicates of this one).
package com.mycompany;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
public class Car {
@NotNull
private String manufacturer;
@NotNull
@Size(min = 2, max = 14)
private String licensePlate;
@Min(2)
private int seatCount;
public Car(String manufacturer, String licencePlate, int seatCount) {
this.manufacturer = manufacturer;
this.licensePlate = licencePlate;
this.seatCount = seatCount;
}
//getters and setters ...
}
@NotNull
, @Size
and @Min
are so-called constraint annotations, that we use to declare constraints, which shall be applied to the fields of a Car instance:
manufacturer
shall never be null
licensePlate
shall never be null and must be between 2 and 14 characters long
seatCount
shall be at least 2.
The reason you should leave off the php closing tag (?>
) is so that the programmer doesn't accidentally send extra newline chars.
The reason you shouldn't leave off the php closing tag is because it causes an imbalance in the php tags and any programmer with half a mind can remember to not add extra white-space.
So for your question:
Is there another good reason to skip the ending php tag?
No, there isn't another good reason to skip the ending php tags.
I will finish with some arguments for not bothering with the closing tag:
People are always able to make mistakes, no matter how smart they are. Adhering to a practice that reduces the number of possible mistakes is (IMHO) a good idea.
PHP is not XML. PHP doesn't need to adhere to XMLs strict standards to be well written and functional. If a missing closing tag annoys you, you're allowed to use a closing tag, it's not a set-in-stone rule one way or the other.
Try this:
List list = new ArrayList();
list.add("Apple");
list.add("Banana");
Object[] ol = list.toArray();
or you can simply have
$('.date-pick').datePicker().val(new Date()).trigger('change')
This would be a get/set in C# using the smallest amount of code possible. You get auto-implemented properties in C# 3.0+.
public class Contact
{
public string Name { get; set; }
}
For anyone wishing to do this in a single line (e.g in the Display/Immediate window, a watch expression or similar in a debug session), the following will do so and "pretty print" the SQL:
new org.hibernate.jdbc.util.BasicFormatterImpl().format((new org.hibernate.loader.criteria.CriteriaJoinWalker((org.hibernate.persister.entity.OuterJoinLoadable)((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory().getEntityPersister(((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory().getImplementors(((org.hibernate.impl.CriteriaImpl)crit).getEntityOrClassName())[0]),new org.hibernate.loader.criteria.CriteriaQueryTranslator(((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory(),((org.hibernate.impl.CriteriaImpl)crit),((org.hibernate.impl.CriteriaImpl)crit).getEntityOrClassName(),org.hibernate.loader.criteria.CriteriaQueryTranslator.ROOT_SQL_ALIAS),((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory(),(org.hibernate.impl.CriteriaImpl)crit,((org.hibernate.impl.CriteriaImpl)crit).getEntityOrClassName(),((org.hibernate.impl.CriteriaImpl)crit).getSession().getEnabledFilters())).getSQLString());
...or here's an easier to read version:
new org.hibernate.jdbc.util.BasicFormatterImpl().format(
(new org.hibernate.loader.criteria.CriteriaJoinWalker(
(org.hibernate.persister.entity.OuterJoinLoadable)
((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory().getEntityPersister(
((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory().getImplementors(
((org.hibernate.impl.CriteriaImpl)crit).getEntityOrClassName())[0]),
new org.hibernate.loader.criteria.CriteriaQueryTranslator(
((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory(),
((org.hibernate.impl.CriteriaImpl)crit),
((org.hibernate.impl.CriteriaImpl)crit).getEntityOrClassName(),
org.hibernate.loader.criteria.CriteriaQueryTranslator.ROOT_SQL_ALIAS),
((org.hibernate.impl.CriteriaImpl)crit).getSession().getFactory(),
(org.hibernate.impl.CriteriaImpl)crit,
((org.hibernate.impl.CriteriaImpl)crit).getEntityOrClassName(),
((org.hibernate.impl.CriteriaImpl)crit).getSession().getEnabledFilters()
)
).getSQLString()
);
Notes:
crit
. If named differently, do a search and replace.getEnabledFilters
rather than getLoadQueryInfluencers()
for backwards compatibility since the latter was introduced in a later version of Hibernate (3.5???)The best and easy way to get the activity context is putting .this
after the name of the Activity. For example: If your Activity's name is SecondActivity
, its context will be SecondActivity.this
The cause of your problem is simple. So many people will run into the same problem, Because I did too and it took me hour to figure out. Just in case, someone else stumbles, The problem is in your query, your select statement is calling $dbname
instead of table name. So its not found whereby returning false
which is boolean
. Good luck.
I tried to optimize solution by handling user input exceptions.
public class Solution {
private static Integer TERMINATION_VALUE = 0;
public static void main(String[] args) {
Integer value = null;
Integer minimum = Integer.MAX_VALUE;
Integer maximum = Integer.MIN_VALUE;
Scanner scanner = new Scanner(System.in);
while (value != TERMINATION_VALUE) {
Boolean inputValid = Boolean.TRUE;
try {
System.out.print("Enter a value: ");
value = scanner.nextInt();
} catch (InputMismatchException e) {
System.out.println("Value must be greater or equal to " + Integer.MIN_VALUE + " and less or equals to " + Integer.MAX_VALUE );
inputValid = Boolean.FALSE;
scanner.next();
}
if(Boolean.TRUE.equals(inputValid)){
minimum = Math.min(minimum, value);
maximum = Math.max(maximum, value);
}
}
if(TERMINATION_VALUE.equals(minimum) || TERMINATION_VALUE.equals(maximum)){
System.out.println("There is not any valid input.");
} else{
System.out.println("Minimum: " + minimum);
System.out.println("Maximum: " + maximum);
}
scanner.close();
}
}
1) Suppose you create a SEQUENCE like shown below:
CREATE SEQUENCE TESTSEQ
INCREMENT BY 1
MINVALUE 1
MAXVALUE 500
NOCACHE
NOCYCLE
NOORDER
2) Now you fetch values from SEQUENCE. Lets say I have fetched four times as shown below.
SELECT TESTSEQ.NEXTVAL FROM dual
SELECT TESTSEQ.NEXTVAL FROM dual
SELECT TESTSEQ.NEXTVAL FROM dual
SELECT TESTSEQ.NEXTVAL FROM dual
3) After executing above four commands the value of the SEQUENCE will be 4. Now suppose I have reset the value of the SEQUENCE to 1 again. The follow the following steps. Follow all the steps in the same order as shown below:
ALTER SEQUENCE TESTSEQ INCREMENT BY -3;
SELECT TESTSEQ.NEXTVAL FROM dual
ALTER SEQUENCE TESTSEQ INCREMENT BY 1;
SELECT TESTSEQ.NEXTVAL FROM dual
The whole point of exceptions is to encourage the first style: letting the error handling be consolidated and handled once, not immediately at every possible error site.
Here is an elegant way to do similar thing. But why do partly JSON unmarshal? That doesn't make sense.
Look below at the working code. Copy and paste it.
import (
"bytes"
"encoding/json" // Encoding and Decoding Package
"fmt"
)
var messeging = `{
"say":"Hello",
"sendMsg":{
"user":"ANisus",
"msg":"Trying to send a message"
}
}`
type SendMsg struct {
User string `json:"user"`
Msg string `json:"msg"`
}
type Chat struct {
Say string `json:"say"`
SendMsg *SendMsg `json:"sendMsg"`
}
func main() {
/** Clean way to solve Json Decoding in Go */
/** Excellent solution */
var chat Chat
r := bytes.NewReader([]byte(messeging))
chatErr := json.NewDecoder(r).Decode(&chat)
errHandler(chatErr)
fmt.Println(chat.Say)
fmt.Println(chat.SendMsg.User)
fmt.Println(chat.SendMsg.Msg)
}
func errHandler(err error) {
if err != nil {
fmt.Println(err)
return
}
}
Try the following, note that when user refreshes the page, the value is "Male" again, data should be stored on database.
<p id="pTest">Male</p>
<button>change</button>
<script>
$('button').click(function(){
$('#pTest').text('test')
})
</script>
as Drew Noakes quoted, kotlin use if statement as expression, so Ternary Conditional Operator is not necessary anymore,
but with the extension function and infix overloading, you could implement that yourself, here is an example
infix fun <T> Boolean.then(value: T?) = TernaryExpression(this, value)
class TernaryExpression<out T>(val flag: Boolean, val truly: T?) {
infix fun <T> or(falsy: T?) = if (flag) truly else falsy
}
then use it like this
val grade = 90
val clazz = (grade > 80) then "A" or "B"
I agree with the other two answers: install the Apple Developer Tools.
But it is also worth noting that OS X ships with ant and rake.
the val
function called from the select
will return an array if its a multiple. $('select#my_multiselect').val()
will return an array of the values for the selected options - you dont need to loop through and get them yourself.
The data
variable contains a Buffer
object. Convert it into ASCII encoding using the following syntax:
data.toString('ascii', 0, data.length)
Asynchronously:
fs.readFile('test.txt', 'utf8', function (error, data) {
if (error) throw error;
console.log(data.toString());
});
Number of parameters is the amount of numbers that can be changed in the model. Mathematically this means number of dimensions of your optimization problem. For you as a programmer, each of this parameters is a floating point number, which typically takes 4 bytes of memory, allowing you to predict the size of this model once saved.
This formula for this number is different for each neural network layer type, but for Dense layer it is simple: each neuron has one bias parameter and one weight per input:
N = n_neurons * ( n_inputs + 1)
.
If there's a problem with authentication or connection, such as not being able to read a password from the terminal, ssh will exit with 255 without being able to run your actual script. Verify to make sure you can run 'true' instead, to see if the ssh connection is established successfully.
Find timestamp from DateTime:
private long ConvertToTimestamp(DateTime value)
{
TimeZoneInfo NYTimeZone = TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time");
DateTime NyTime = TimeZoneInfo.ConvertTime(value, NYTimeZone);
TimeZone localZone = TimeZone.CurrentTimeZone;
System.Globalization.DaylightTime dst = localZone.GetDaylightChanges(NyTime.Year);
NyTime = NyTime.AddHours(-1);
DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, 0).ToLocalTime();
TimeSpan span = (NyTime - epoch);
return (long)Convert.ToDouble(span.TotalSeconds);
}
This worked for me:
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var selectedCell:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
selectedCell.contentView.backgroundColor = UIColor.redColor()
}
// if tableView is set in attribute inspector with selection to multiple Selection it should work.
// Just set it back in deselect
override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
var cellToDeSelect:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
cellToDeSelect.contentView.backgroundColor = colorForCellUnselected
}
//colorForCellUnselected is just a var in my class
add this ddl to reference to your project: System.Web.Extensions.dll
use this namespace: using System.Web.Script.Serialization;
public class IdName
{
public int Id { get; set; }
public string Name { get; set; }
}
string jsonStringSingle = "{'Id': 1, 'Name':'Thulasi Ram.S'}".Replace("'", "\"");
var entity = new JavaScriptSerializer().Deserialize<IdName>(jsonStringSingle);
string jsonStringCollection = "[{'Id': 2, 'Name':'Thulasi Ram.S'},{'Id': 2, 'Name':'Raja Ram.S'},{'Id': 3, 'Name':'Ram.S'}]".Replace("'", "\"");
var collection = new JavaScriptSerializer().Deserialize<IEnumerable<IdName>>(jsonStringCollection);
Assume you have one table with name 'table1'. It contain one column 'col1' with varchar type. Query to crate table is give below
CREATE TABLE `table1` (
`col1` VARCHAR(50) NULL DEFAULT NULL
)
Now if you want to insert number from 1 to 50 in that table then use following stored procedure
DELIMITER $$
CREATE PROCEDURE ABC()
BEGIN
DECLARE a INT Default 1 ;
simple_loop: LOOP
insert into table1 values(a);
SET a=a+1;
IF a=51 THEN
LEAVE simple_loop;
END IF;
END LOOP simple_loop;
END $$
To call that stored procedure use
CALL `ABC`()
At the beginning of your file you set raw_input
to 0. Do not do this, at it modifies the built-in raw_input()
function. Therefore, whenever you call raw_input()
, it is essentially calling 0()
, which raises the error. To remove the error, remove the first line of your code:
M = 1.6
# Miles to Kilometers
# Celsius Celsius = (var1 - 32) * 5/9
# Gallons to liters Gallons = 3.6
# Pounds to kilograms Pounds = 0.45
# Inches to centimete Inches = 2.54
def intro():
print("Welcome! This program will convert measures for you.")
main()
def main():
print("Select operation.")
print("1.Miles to Kilometers")
print("2.Fahrenheit to Celsius")
print("3.Gallons to liters")
print("4.Pounds to kilograms")
print("5.Inches to centimeters")
choice = input("Enter your choice by number: ")
if choice == '1':
convertMK()
elif choice == '2':
converCF()
elif choice == '3':
convertGL()
elif choice == '4':
convertPK()
elif choice == '5':
convertPK()
else:
print("Error")
def convertMK():
input_M = float(raw_input(("Miles: ")))
M_conv = (M) * input_M
print("Kilometers: %f\n" % M_conv)
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print("I didn't quite understand that answer. Terminating.")
main()
def converCF():
input_F = float(raw_input(("Fahrenheit: ")))
F_conv = (input_F - 32) * 5/9
print("Celcius: %f\n") % F_conv
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print("I didn't quite understand that answer. Terminating.")
main()
def convertGL():
input_G = float(raw_input(("Gallons: ")))
G_conv = input_G * 3.6
print("Centimeters: %f\n" % G_conv)
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
def convertPK():
input_P = float(raw_input(("Pounds: ")))
P_conv = input_P * 0.45
print("Centimeters: %f\n" % P_conv)
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
def convertIC():
input_cm = float(raw_input(("Inches: ")))
inches_conv = input_cm * 2.54
print("Centimeters: %f\n" % inches_conv)
restart = str(input("Do you wish to make another conversion? [y]Yes or [n]no: "))
if restart == 'y':
main()
elif restart == 'n':
end()
else:
print ("I didn't quite understand that answer. Terminating.")
main()
def end():
print("This program will close.")
exit()
intro()
we can change the icon of markers, i did it on right click event. Lets see if it works for you...
// Create a Marker
var marker = new google.maps.Marker({
position: location,
map: map,
title:'Sample Tool Tip'
});
// Set Icon on any event
google.maps.event.addListener(marker, "rightclick", function() {
marker.setIcon('blank.png'); // set image path here...
});
df['FirstName']=df['ID'].apply(lambda x: 'Matt' if x==103 else '')
df['LastName']=df['ID'].apply(lambda x: 'Jones' if x==103 else '')
First you need to check if your java process is already running with JMX parameters. Do this:
ps -ef | grep java
Check your java process you need to monitor. If you can see jmx rmi parameter Djmx.rmi.registry.port=xxxx then use the port mentioned here in your java visualvm to connect it remotely under jmx connection.
If it's not running through jmx rmi port then you need to run your java process with below mentioned parameters :
-Djmx.rmi.registry.port=1234 -Djmx.rmi.port=1235 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false
Note: port numbers are based on your choice.
Now you can use this port for jmx coneection. Here it is port 1234
.
You can also Right Click on the table, choose modify, then go to the attribute, right click on it, and choose drop primary key.
You can also use the latextable function from the R package micsFuncs:
http://cran.r-project.org/web/packages/miscFuncs/index.html
latextable(M) where M is a matrix with mixed alphabetic and numeric entries outputs a basic LaTeX table onto screen, which can be copied and pasted into a LaTeX document. Where there are small numbers, it also replaces these with index notation (eg 1.2x10^{-3}).
You could try:
$rows = array();
while($row = mysql_fetch_array($result)){
array_push($rows, $row);
}
echo json_encode($rows);
Microsoft Enterprise Library (referenced by .NetTiers) was our problem, which was in turn referencing an older version of Unity. In order to solve the problem we used the following binding redirection in the web.config:
<configuration>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Microsoft.Practices.Unity" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="1.0.0.0-2.0.414.0" newVersion="2.1.505.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Practices.Unity.Configuration" publicKeyToken="31bf3856ad364e35" culture="neutral" />
<bindingRedirect oldVersion="1.0.0.0-2.0.414.0" newVersion="2.1.505.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
Alternatively, you may want to just update the Enterprise Library to the latest version.
The simplest way to install jq
and test that it works is through brew and then using the simplest filter that merely formats the JSON
brew
is the easiest way to manage packages on a mac:
brew install jq
Need brew
? Run the following command:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Failing that: instructions to install and use are on https://brew.sh/
The .
filter takes its input and produces it unchanged as output. This is the identity operator. (quote the docs)
echo '{ "name":"John", "age":31, "city":"New York" }' | jq .
The result should appear like so in your terminal:
{
"name": "John",
"age": 31,
"city": "New York"
}
File temp = File.createTempFile("preview", ".png" );
String fullfileName= temp.getAbsolutePath();
final String fileName = Uri.parse(fullfileName)
.getLastPathSegment();
final String filePath = fullfileName.
substring(0,fullfileName.lastIndexOf(File.separator));
Log.d("filePath", "filePath: " + filePath);
fullfileName:
/mnt/sdcard/Download_Manager_Farsi/preview.png
filePath:
/mnt/sdcard/Download_Manager_Farsi
A .tex file should be a LaTeX source file.
If this is the case, that file contains the source code for a LaTeX document. You can open it with any text editor (notepad, notepad++ should work) and you can view the source code. But if you want to view the final formatted document, you need to install a LaTeX distribution and compile the .tex file.
Of course, any program can write any file with any extension, so if this is not a LaTeX document, then we can't know what software you need to install to open it. Maybe if you upload the file somewhere and link it in your question we can see the file and provide more help to you.
Yes, this is the source code of a LaTeX document. If you were able to paste it here, then you are already viewing it. If you want to view the compiled document, you need to install a LaTeX distribution. You can try to install MiKTeX then you can use that to compile the document to a .pdf file.
You can also check out this question and answer for how to do it: How to compile a LaTeX document?
Also, there's an online LaTeX editor and you can paste your code in there to preview the document: https://www.overleaf.com/.
Just use generator expressions:
blahblah = (l.rstrip() for l in open(filename))
for x in blahblah:
print x
Also I want to advise you against reading whole file in memory -- looping over generators is much more efficient on big datasets.
RouterModule.forRoot([
{ path: 'welcome', component: WelcomeComponent },
{ path: '', redirectTo: 'welcome', pathMatch: 'full' },
{ path: '**', component: 'pageNotFoundComponent' }
])
Case 1 pathMatch:'full'
:
In this case, when app is launched on localhost:4200
(or some server) the default page will be welcome screen, since the url will be https://localhost:4200/
If https://localhost:4200/gibberish
this will redirect to pageNotFound screen because of path:'**'
wildcard
Case 2
pathMatch:'prefix'
:
If the routes have { path: '', redirectTo: 'welcome', pathMatch: 'prefix' }
, now this will never reach the wildcard route since every url would match path:''
defined.
In Google's closure library project , there is a module which has do the job , below is the API and source code.
Quick and dirty test for whether an index exists or not. in your implementation replace list With your list you are testing.
public boolean hasIndex(int index){
if(index < list.size())
return true;
return false;
}
or for 2Dimensional ArrayLists...
public boolean hasRow(int row){
if(row < _matrix.size())
return true;
return false;
}
I think this may the most easy way to finish this work:
from random import random
from pandas import DataFrame
from statsmodels.api import OLS
lr = lambda : [random() for i in range(100)]
x = DataFrame({'x1': lr(), 'x2':lr(), 'x3':lr()})
x['b'] = 1
y = x.x1 + x.x2 * 2 + x.x3 * 3 + 4
print x.head()
x1 x2 x3 b
0 0.433681 0.946723 0.103422 1
1 0.400423 0.527179 0.131674 1
2 0.992441 0.900678 0.360140 1
3 0.413757 0.099319 0.825181 1
4 0.796491 0.862593 0.193554 1
print y.head()
0 6.637392
1 5.849802
2 7.874218
3 7.087938
4 7.102337
dtype: float64
model = OLS(y, x)
result = model.fit()
print result.summary()
OLS Regression Results
==============================================================================
Dep. Variable: y R-squared: 1.000
Model: OLS Adj. R-squared: 1.000
Method: Least Squares F-statistic: 5.859e+30
Date: Wed, 09 Dec 2015 Prob (F-statistic): 0.00
Time: 15:17:32 Log-Likelihood: 3224.9
No. Observations: 100 AIC: -6442.
Df Residuals: 96 BIC: -6431.
Df Model: 3
Covariance Type: nonrobust
==============================================================================
coef std err t P>|t| [95.0% Conf. Int.]
------------------------------------------------------------------------------
x1 1.0000 8.98e-16 1.11e+15 0.000 1.000 1.000
x2 2.0000 8.28e-16 2.41e+15 0.000 2.000 2.000
x3 3.0000 8.34e-16 3.6e+15 0.000 3.000 3.000
b 4.0000 8.51e-16 4.7e+15 0.000 4.000 4.000
==============================================================================
Omnibus: 7.675 Durbin-Watson: 1.614
Prob(Omnibus): 0.022 Jarque-Bera (JB): 3.118
Skew: 0.045 Prob(JB): 0.210
Kurtosis: 2.140 Cond. No. 6.89
==============================================================================
I encountered the same issue. You have to use ActiveX or Flash (or Java). The good thing is that it doesn't have to be invasive. I have a simple ActiveX method that will return the size of the to-be-uploaded file.
If you go with Flash, you can even do some fancy js/css to cusomize the uploading experience--only using Flash (as a 1x1 "movie") to access it's file uploading features.
I had a similar problem. I needed to get the last version of page content translation, in other words - to get that specific record which has highest number in version column. So I select all records ordered by version and then take the first row from result (by using LIMIT clause).
SELECT *
FROM `page_contents_translations`
ORDER BY version DESC
LIMIT 1
This might help:
basename($_SERVER['PHP_SELF'])
it will work even if you are using include.
There are an infinite number of rational numbers, and a finite number of bits with which to represent them. See http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems.
You'll find that in javascript, there are usually many different ways to do the same thing or find the same information. In your example, you are looking for some element that is guaranteed to always exist. window
and document
both fit the bill (with just a few differences).
From mozilla dev network:
addEventListener() registers a single event listener on a single target. The event target may be a single element in a document, the document itself, a window, or an XMLHttpRequest.
So as long as you can count on your "target" always being there, the only difference is what events you're listening for, so just use your favorite.
A string is just a character array so use Linq to do the replace (similar to Albin above except uses a linq contains statement to do the replace):
var resultString = new string(
(from ch in "My name @is ,Wan.;'; Wan"
where ! @"@,.;\'".Contains(ch)
select ch).ToArray());
The first string is the string to replace chars in and the second is a simple string containing the chars
In general, you can pass any query to mysql
from shell with -e option.
mysql -u username -p -D dbname -e "DROP DATABASE dbname"
PHP is a normal sripting language similar to bash or python or perl. So a script with shebang works, at least on linux.
Example PHP file:
#!/usr/bin/env php
<?php
echo("Hello World!\n")
?>
How to run it:
$ chmod 755 hello.php # do this only once
$ ./hello.php
You could use a flag to keep track of the status:
var output = $('h1');_x000D_
var isPaused = false;_x000D_
var time = 0;_x000D_
var t = window.setInterval(function() {_x000D_
if(!isPaused) {_x000D_
time++;_x000D_
output.text("Seconds: " + time);_x000D_
}_x000D_
}, 1000);_x000D_
_x000D_
//with jquery_x000D_
$('.pause').on('click', function(e) {_x000D_
e.preventDefault();_x000D_
isPaused = true;_x000D_
});_x000D_
_x000D_
$('.play').on('click', function(e) {_x000D_
e.preventDefault();_x000D_
isPaused = false;_x000D_
});
_x000D_
h1 {_x000D_
font-family: Helvetica, Verdana, sans-serif;_x000D_
font-size: 12px;_x000D_
}
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<h1>Seconds: 0</h1>_x000D_
<button class="play">Play</button>_x000D_
<button class="pause">Pause</button>
_x000D_
This is just what I would do, I'm not sure if you can actually pause the setInterval.
Note: This system is easy and works pretty well for applications that don't require a high level of precision, but it won't consider the time elapsed in between ticks: if you click pause after half a second and later click play your time will be off by half a second.
If you dont want to hard-code the cell addresses you can use the ROW()
function.
eg: =AVERAGE(INDIRECT("A" & ROW()), INDIRECT("C" & ROW()))
Its probably not the best way to do it though! Using Auto-Fill and static columns like @JaiGovindani suggests would be much better.
You can use:
<a ng-href="#/about">About</a>
If you want some dynamic variable inside href you can do like this way:
<a ng-href="{{link + 123}}">Link to 123</a>
Where link is Angular scope variable.
As mentioned above the "accepted" solution fails on reparse points - yet people still mark it up(???). There's a much shorter solution that properly replicates the functionality:
public static void rmdir(string target, bool recursive)
{
string tfilename = Path.GetDirectoryName(target) +
(target.Contains(Path.DirectorySeparatorChar.ToString()) ? Path.DirectorySeparatorChar.ToString() : string.Empty) +
Path.GetRandomFileName();
Directory.Move(target, tfilename);
Directory.Delete(tfilename, recursive);
}
I know, doesn't handle the permissions cases mentioned later, but for all intents and purposes FAR BETTER provides the expected functionality of the original/stock Directory.Delete() - and with a lot less code too.
You can safely carry on processing because the old dir will be out of the way ...even if not gone because the 'file system is still catching up' (or whatever excuse MS gave for providing a broken function).
As a benefit, if you know your target directory is large/deep and don't want to wait (or bother with exceptions) the last line can be replaced with:
ThreadPool.QueueUserWorkItem((o) => { Directory.Delete(tfilename, recursive); });
You are still safe to carry on working.
I usually do it this way when it's a quite a few rows:
(On larger datasets i'd use one of the solutions mentioned above though).
Update Swift 4.2
Here, for instance, we encrypt a string to base64encoded string. And then we decrypt the same to a readable string. (That would be same as our input string).
In my case, I use this to encrypt a string and embed that to QR Code. Then another party scan that and decrypt the same. So intermediate won't understand the QR codes.
Step 1: Encrypt a string "Encrypt My Message 123"
Step 2: Encrypted base64Encoded string : +yvNjiD7F9/JKmqHTc/Mjg== (The same printed on QR code)
Step 3: Scan and decrypt the string "+yvNjiD7F9/JKmqHTc/Mjg=="
Step 4: It comes final result - "Encrypt My Message 123"
Functions for Encrypt & Decrypt
func encryption(stringToEncrypt: String) -> String{
let key = "MySecretPKey"
//let iv = "92c9d2c07a9f2e0a"
let data = stringToEncrypt.data(using: .utf8)
let keyD = key.data(using: .utf8)
let encr = (data as NSData?)!.aes128EncryptedData(withKey: keyD)
let base64String: String = (encr as NSData?)!.base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0))
print(base64String)
return base64String
}
func decryption(encryptedString:String) -> String{
let key = "MySecretPKey"
//let iv = "92c9d2c07a9f2e0a"
let keyD = key.data(using: .utf8)
let decrpStr = NSData(base64Encoded: encryptedString, options: NSData.Base64DecodingOptions(rawValue: 0))
let dec = (decrpStr)!.aes128DecryptedData(withKey: keyD)
let backToString = String(data: dec!, encoding: String.Encoding.utf8)
print(backToString!)
return backToString!
}
Usage:
let enc = encryption(stringToEncrypt: "Encrypt My Message 123")
let decryptedString = decryption(encryptedString: enc)
print(decryptedString)
Classes for supporting AES encrypting functions, these are written in Objective-C. So for swift, you need to use bridge header to support these.
Class Name: NSData+AES.h
#import <Foundation/Foundation.h>
@interface NSData (AES)
- (NSData *)AES128EncryptedDataWithKey:(NSData *)key;
- (NSData *)AES128DecryptedDataWithKey:(NSData *)key;
- (NSData *)AES128EncryptedDataWithKey:(NSData *)key iv:(NSData *)iv;
- (NSData *)AES128DecryptedDataWithKey:(NSData *)key iv:(NSData *)iv;
@end
Class Name: NSData+AES.m
#import "NSData+AES.h"
#import <CommonCrypto/CommonCryptor.h>
@implementation NSData (AES)
- (NSData *)AES128EncryptedDataWithKey:(NSData *)key
{
return [self AES128EncryptedDataWithKey:key iv:nil];
}
- (NSData *)AES128DecryptedDataWithKey:(NSData *)key
{
return [self AES128DecryptedDataWithKey:key iv:nil];
}
- (NSData *)AES128EncryptedDataWithKey:(NSData *)key iv:(NSData *)iv
{
return [self AES128Operation:kCCEncrypt key:key iv:iv];
}
- (NSData *)AES128DecryptedDataWithKey:(NSData *)key iv:(NSData *)iv
{
return [self AES128Operation:kCCDecrypt key:key iv:iv];
}
- (NSData *)AES128Operation:(CCOperation)operation key:(NSData *)key iv:(NSData *)iv
{
NSUInteger dataLength = [self length];
size_t bufferSize = dataLength + kCCBlockSizeAES128;
void *buffer = malloc(bufferSize);
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(operation,
kCCAlgorithmAES128,
kCCOptionPKCS7Padding | kCCOptionECBMode,
key.bytes,
kCCBlockSizeAES128,
iv.bytes,
[self bytes],
dataLength,
buffer,
bufferSize,
&numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
}
free(buffer);
return nil;
}
@end
I hope that helps.
Thanks!!!
You can use Collections.swap(List<?> list, int i, int j);
For React you must use it's per-define keywords to define html attributes.
class
->className
is used and
for
->htmlFor
is used, as react is case sensitive make sure you must follow small and capital as required.
I just did the following (in V 3.5) and it worked like a charm:
<p:column headerText="name" width="20px"/>
setInterval(moveItem, 2000);
is the way to execute the function moveItem
every 2 seconds. The main problem in your code is that you're calling setInterval
inside of, rather than outside of, the callback. If I understand what you're trying to do, you can use this:
function moveItem() {
jQuery('.stripTransmitter ul li a').trigger('click');
}
setInterval(moveItem, 2000);
N.B.:Don't pass strings to setTimeout
or setInterval
- best practice is to pass an anonymous function or a function identifier (as I did above). Also, be careful to not mix single and double quotes. Pick one and stick with it.
It is completely acceptable to use a DIV inside a <form>
tag.
If you look at the default CSS 2.1 stylesheet, div
and p
are both in the display: block
category. Then looking at the HTML 4.01 specification for the form element, they include not only <p>
tags, but <table>
tags, so of course <div>
would meet the same criteria. There is also a <legend>
tag inside the form in the documentation.
For instance, the following passes HTML4 validation in strict mode:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Test</title>
</head>
<body>
<form id="test" action="test.php">
<div>
Test: <input name="blah" value="test" type="text">
</div>
</form>
</body>
</html>
There is a alter way. Open the excel file in Microsoft office Excel, and save it as "Excel 97-2003 Workbook". Then, use the new saved excel file in your file connection.
There are two pair of modal events, one is "show" and "shown", the other is "hide" and "hidden". As you can see from the name, hide event fires when modal is about the be close, such as clicking on the cross on the top-right corner or close button or so on. While hidden is fired after the modal is actually close. You can test these events your self. For exampel:
$( '#modal' )
.on('hide', function() {
console.log('hide');
})
.on('hidden', function(){
console.log('hidden');
})
.on('show', function() {
console.log('show');
})
.on('shown', function(){
console.log('shown' )
});
And, as for your question, I think you should listen to the 'hide' event of your modal.
I initialized a new SPring boot project in IntelliJIdea with Spring Boot dev tools, but in pom.xml I had only dependency
...
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
...
You need to have also artifact spring-boot-starter-web. Just add this dependency to pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
Note that if you use DictWriter, you will have a new line from the open function and a new line from the writerow function. You can use newline='' within the open function to remove the extra newline.
An example that uses RecursiveDirectoryIterator class, it's a convenient way to iterate recursively over filesystem.
$output = array();
foreach( new RecursiveIteratorIterator(
new RecursiveDirectoryIterator( 'path', FilesystemIterator::SKIP_DOTS | FilesystemIterator::UNIX_PATHS ) ) as $value ) {
if ( $value->isFile() ) {
$output[] = array( $value->getMTime(), $value->getRealPath() );
}
}
usort ( $output, function( $a, $b ) {
return $a[0] > $b[0];
});
I'd use pathos.multiprocesssing
, instead of multiprocessing
. pathos.multiprocessing
is a fork of multiprocessing
that uses dill
. dill
can serialize almost anything in python, so you are able to send a lot more around in parallel. The pathos
fork also has the ability to work directly with multiple argument functions, as you need for class methods.
>>> from pathos.multiprocessing import ProcessingPool as Pool
>>> p = Pool(4)
>>> class Test(object):
... def plus(self, x, y):
... return x+y
...
>>> t = Test()
>>> p.map(t.plus, x, y)
[4, 6, 8, 10]
>>>
>>> class Foo(object):
... @staticmethod
... def work(self, x):
... return x+1
...
>>> f = Foo()
>>> p.apipe(f.work, f, 100)
<processing.pool.ApplyResult object at 0x10504f8d0>
>>> res = _
>>> res.get()
101
Get pathos
(and if you like, dill
) here:
https://github.com/uqfoundation
Why not having something simpler?
Just call Request.Path
, it will return a String Separated by the "/"
and then you can use .Split('/')[1]
to get the Controller Name.
Copy "libgcc_s_dw2-1.dll" to were make.exe is. (If you are using Msys, copy it to \msys\bin) Make sure that the path to make.exe is set in the env. PATH (if make.exe is in a folder "bin", most likely, and you have msys, it's \msys\bin) Compile, rund, debug, etc. happy.
You could use the ROLLUP operator
SELECT CASE
WHEN (GROUPING([Type]) = 1) THEN 'Total'
ELSE [Type] END AS [TYPE]
,SUM([Total Sales]) as Total_Sales
From Before
GROUP BY
[Type] WITH ROLLUP
All even numbers divided by 2 will result in an integer
$number = 4;
if(is_int($number/2))
{
echo("Integer");
}
else
{
echo("Not Integer");
}
My use case made insets unmanageable:
This is what I ended up doing and I'm pretty happy with it:
Create the button on the storyboard with a background image (round circle with blur and color).
Declare a UIImageView in my class:
@implementation BlahViewController {
UIImageView *_imageView;
}
Create image view instance on init:
-(id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
if (self) {
_imageView = [[UIImageView alloc] initWithCoder:aDecoder];
}
return self;
}
In viewDidLoad add a new layer to the button for our image view and set text alignment:
[self.btn addSubview:_imageView];
[self.btn.titleLabel setTextAlignment:NSTextAlignmentCenter];
In the button click method add my chosen overlay image to the image view, size it to fit the image and center it in the button but move it up 15 so I can put the text offset below it:
[_imageView setImage:[UIImage imageNamed:@"blahImageBlah]];
[_imageView sizeToFit];
_imageView.center = CGPointMake(ceilf(self.btn.bounds.size.width / 2.0f),
ceilf((self.btn.bounds.size.height / 2.0f) - 15));
[self.btn setTitle:@"Some new text" forState:UIControlStateNormal];
Note: ceilf() is important to ensure it's on a pixel boundary for image quality.
I liked Peter Mortenson's answer, but I would like to expand.
'cd ~' in the .bashrc file causes the "Git Bash Here" feature of Git Bash to stop working. Instead, add this if statement to the .bashrc file:
if [ "$PWD" == '/' ]
then
cd ~
fi
This will change to the home directory when Git Bash is run on its own, but when "Git Bash Here" is run, the current working directory will not be changed.
Call
Calls one batch program from another without stopping the parent batch program. The call command accepts labels as the target of the call. Call has no effect at the command-line when used outside of a script or batch file. https://technet.microsoft.com/en-us/library/bb490873.aspx
Start
Starts a separate Command Prompt window to run a specified program or command. Used without parameters, start opens a second command prompt window. https://technet.microsoft.com/en-us/library/bb491005.aspx
id presentedController = self.navigationController.modalViewController;
if (presentedController) {
// Some view is Presented
} else {
// Some view is Pushed
}
This will let you know if viewController is presented or pushed
The general rule of thumb is that you don't modify a collection/array/list while iterating over it.
Use a secondary list to store the items you want to act upon and execute that logic in a loop after your initial loop.
Handy one-liners
for D in *; do echo "$D"; done
for D in *; do find "$D" -type d; done ### Option A
find * -type d ### Option B
Option A is correct for folders with spaces in between. Also, generally faster since it doesn't print each word in a folder name as a separate entity.
# Option A
$ time for D in ./big_dir/*; do find "$D" -type d > /dev/null; done
real 0m0.327s
user 0m0.084s
sys 0m0.236s
# Option B
$ time for D in `find ./big_dir/* -type d`; do echo "$D" > /dev/null; done
real 0m0.787s
user 0m0.484s
sys 0m0.308s
(It would really have been nice if you'd mentioned which Color
type you were interested in to start with...)
One simple way of doing this is to just build up a dictionary via reflection:
public static class Colors
{
private static readonly Dictionary<string, Color> dictionary =
typeof(Color).GetProperties(BindingFlags.Public |
BindingFlags.Static)
.Where(prop => prop.PropertyType == typeof(Color))
.ToDictionary(prop => prop.Name,
prop => (Color) prop.GetValue(null, null)));
public static Color FromName(string name)
{
// Adjust behaviour for lookup failure etc
return dictionary[name];
}
}
That will be relatively slow for the first lookup (while it uses reflection to find all the properties) but should be very quick after that.
If you want it to be case-insensitive, you can pass in something like StringComparer.OrdinalIgnoreCase
as an extra argument in the ToDictionary
call. You can easily add TryParse
etc methods should you wish.
Of course, if you only need this in one place, don't bother with a separate class etc :)
For Windows users:
Step 1:
You have to enable Developer options in your Android phone.
You can enable Developer options using this way.
• Open Settings> About> Software Information> More.
• Then tap “Build number” seven times to enable Developer options.
• Go back to Settings menu and now you'll be able to see “Developer options” there.
• Tap it and turn on USB Debugging from the menu on the next screen.
Step 2:
Open cmd and type adb.
if you find that adb is not valid command then you have to add a path to the environment variable.
•First go to you SDK installed folder
Follow this path and this path is just for an example.
D:\softwares\Development\Andoird\SDK\sdk\platform-tools\;
D:\softwares\Development\Andoird\SDK\sdk\tools;
• Now search on windows system advanced setting
Open the Environment variable.
then open path and paste the following path
this is an example.
You SDK path is different from mine please use yours. D:\softwares\Development\Andoird\SDK\sdk\platform-tools\;
D:\softwares\Development\Andoird\SDK\sdk\tools;
Step 3:
Open cmd and type adb. if you still see that adb is not valid command then your path has not set properly follow above steps.
Now you can connect your android phone to PC.
Open cmd and type adb devices and you can see your device.
Find you phone ip address.
Type:- adb tcpip 5555
Get the IP address of your phone
adb shell netcfg
Now,
adb connect "IP address of your phone"
Now run your android project and if not see you device then type again adb connect IP address of your phone
For Linux and macOS users:
Step 1: open terminal and install adb using
Connect your phone via USB cable to PC.
Type following command in terminal
adb tcpip 5555
Using adb, connect your android phone ip address.
Remove your phone.
You need to remove the /var/lib/mysql folder. Also, purge when you remove the packages (I'm told this helps).
sudo apt-get remove --purge mysql-server mysql-client mysql-common
sudo rm -rf /var/lib/mysql
I was encountering similar issues. The second line got rid of my issues and allowed me to set up MySql from scratch. Hopefully it helps you too!
Here is a demo react_hooks_debug_print.html
in react hooks that is based on Chris's answer. The json data example is from https://json.org/example.html.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Hello World</title>
<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<!-- Don't use this in production: -->
<script src="https://unpkg.com/[email protected]/babel.min.js"></script>
</head>
<body>
<div id="root"></div>
<script src="https://raw.githubusercontent.com/cassiozen/React-autobind/master/src/autoBind.js"></script>
<script type="text/babel">
let styles = {
root: { backgroundColor: '#1f4662', color: '#fff', fontSize: '12px', },
header: { backgroundColor: '#193549', padding: '5px 10px', fontFamily: 'monospace', color: '#ffc600', },
pre: { display: 'block', padding: '10px 30px', margin: '0', overflow: 'scroll', }
}
let data = {
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
"GlossList": {
"GlossEntry": {
"ID": "SGML",
"SortAs": "SGML",
"GlossTerm": "Standard Generalized Markup Language",
"Acronym": "SGML",
"Abbrev": "ISO 8879:1986",
"GlossDef": {
"para": "A meta-markup language, used to create markup languages such as DocBook.",
"GlossSeeAlso": [
"GML",
"XML"
]
},
"GlossSee": "markup"
}
}
}
}
}
const DebugPrint = () => {
const [show, setShow] = React.useState(false);
return (
<div key={1} style={styles.root}>
<div style={styles.header} onClick={ ()=>{setShow(!show)} }>
<strong>Debug</strong>
</div>
{ show
? (
<pre style={styles.pre}>
{JSON.stringify(data, null, 2) }
</pre>
)
: null
}
</div>
)
}
ReactDOM.render(
<DebugPrint data={data} />,
document.getElementById('root')
);
</script>
</body>
</html>
Or in the following way, add the style into header:
<style>
.root { background-color: #1f4662; color: #fff; fontSize: 12px; }
.header { background-color: #193549; padding: 5px 10px; fontFamily: monospace; color: #ffc600; }
.pre { display: block; padding: 10px 30px; margin: 0; overflow: scroll; }
</style>
And replace DebugPrint
with the follows:
const DebugPrint = () => {
// https://stackoverflow.com/questions/30765163/pretty-printing-json-with-react
const [show, setShow] = React.useState(false);
return (
<div key={1} className='root'>
<div className='header' onClick={ ()=>{setShow(!show)} }>
<strong>Debug</strong>
</div>
{ show
? (
<pre className='pre'>
{JSON.stringify(data, null, 2) }
</pre>
)
: null
}
</div>
)
}
Very similar to Steve's PowerShell scripts. I just added TestResults and packages to it as it is needed for most of the projects.
Get-ChildItem .\ -include bin,obj,packages,TestResults -Recurse | foreach ($_) { remove-item $_.fullname -Force -Recurse }
I had the same error, I was updating from within Eclipse and I got many errors. So I tried updating from a DOS command window, and got the same issue.
Then I tried the solution " git gc --prune=now " This gave messages that the files were locked in the refs directory.
Eclipse must have had a locked on something in the "refs" directory.
The solution I found was to simply close Eclipse.
Then I updated the repository from DOS with a " git PULL " command, and everything worked fine.
I'm the co-author of a free, open-source Git extension:
https://github.com/ZoomerAnalytics/git-xltrail
It makes Git work with any Excel workbook file format without any workarounds.
You can compare the length of the string with one where the commas are removed:
len(value) - len(replace(value,',',''))
in angular2 2.1.1 I was not able to catch the exception using the (data),(error) pattern, so I implemented it using .catch(...).
It's nice because it can be used with all other Observable chained methods like .retry .map etc.
import {Observable} from 'rxjs/Rx';
Http
.put(...)
.catch(err => {
notify('UI error handling');
return Observable.throw(err); // observable needs to be returned or exception raised
})
.subscribe(data => ...) // handle success
from documentation:
Returns
(Observable): An observable sequence containing elements from consecutive source sequences until a source sequence terminates successfully.
There seems to be a confusion between "Parent" and "Owner". If you open a form as MDI-form, i.e. imbedded inside another form, then this surrounding form is the Parent. The form property StartPosition with the value FormStartPosition.CenterParent refers to this one. The parameter you may pass to the Show method is the Owner, not the Parent! This is why frm.StartPosition = FormStartPosition.CenterParent does not work as you may expect.
The following code placed in a form will center it with respect to its owner with some offset, if its StartPosition is set to Manual. The small offset opens the forms in a tiled manner. This is an advantage if the owner and the owned form have the same size or if you open several owned forms.
protected override void OnShown(EventArgs e)
{
base.OnShown(e);
if (Owner != null && StartPosition == FormStartPosition.Manual) {
int offset = Owner.OwnedForms.Length * 38; // approx. 10mm
Point p = new Point(Owner.Left + Owner.Width / 2 - Width / 2 + offset, Owner.Top + Owner.Height / 2 - Height / 2 + offset);
this.Location = p;
}
}
Set the property of your DataGridView:
Anchor: Top,Left
AutoSizeColumn: Fill
Dock: Fill
Use git show
, which also shows you the commit message, and defaults to the current commit when given no arguments.
In 5.5
adding
Route::get('logout', 'Auth\LoginController@logout');
to my routes file works fine.
implementation Without a Controller.
<!DOCTYPE html>_x000D_
<html>_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>_x000D_
<body>_x000D_
_x000D_
<script>_x000D_
var app = angular.module("myShoppingList", []); _x000D_
</script>_x000D_
_x000D_
<div ng-app="myShoppingList" ng-init="products = ['Milk','Bread','Cheese']">_x000D_
<ul>_x000D_
<li ng-repeat="x in products track by $index">{{x}}_x000D_
<span ng-click="products.splice($index,1)">×</span>_x000D_
</li>_x000D_
</ul>_x000D_
<input ng-model="addItem">_x000D_
<button ng-click="products.push(addItem)">Add</button>_x000D_
</div>_x000D_
_x000D_
<p>Click the little x to remove an item from the shopping list.</p>_x000D_
_x000D_
</body>_x000D_
</html>
_x000D_
The splice() method adds/removes items to/from an array.
array.splice(index, howmanyitem(s), item_1, ....., item_n)
index: Required. An integer that specifies at what position to add/remove items, Use negative values to specify the position from the end of the array.
howmanyitem(s): Optional. The number of items to be removed. If set to 0, no items will be removed.
item_1, ..., item_n: Optional. The new item(s) to be added to the array
I want the jar to be in a 3rdparty lib in source control, and link to it by relative path from the pom.xml file.
If you really want this (understand, if you can't use a corporate repository), then my advice would be to use a "file repository" local to the project and to not use a system
scoped dependency. The system
scoped should be avoided, such dependencies don't work well in many situation (e.g. in assembly), they cause more troubles than benefits.
So, instead, declare a repository local to the project:
<repositories>
<repository>
<id>my-local-repo</id>
<url>file://${project.basedir}/my-repo</url>
</repository>
</repositories>
Install your third party lib in there using install:install-file
with the localRepositoryPath
parameter:
mvn install:install-file -Dfile=<path-to-file> -DgroupId=<myGroup> \
-DartifactId=<myArtifactId> -Dversion=<myVersion> \
-Dpackaging=<myPackaging> -DlocalRepositoryPath=<path>
Update: It appears that install:install-file
ignores the localRepositoryPath
when using the version 2.2 of the plugin. However, it works with version 2.3 and later of the plugin. So use the fully qualified name of the plugin to specify the version:
mvn org.apache.maven.plugins:maven-install-plugin:2.3.1:install-file \
-Dfile=<path-to-file> -DgroupId=<myGroup> \
-DartifactId=<myArtifactId> -Dversion=<myVersion> \
-Dpackaging=<myPackaging> -DlocalRepositoryPath=<path>
maven-install-plugin documentation
Finally, declare it like any other dependency (but without the system
scope):
<dependency>
<groupId>your.group.id</groupId>
<artifactId>3rdparty</artifactId>
<version>X.Y.Z</version>
</dependency>
This is IMHO a better solution than using a system
scope as your dependency will be treated like a good citizen (e.g. it will be included in an assembly and so on).
Now, I have to mention that the "right way" to deal with this situation in a corporate environment (maybe not the case here) would be to use a corporate repository.
<asp:GridView ID="GridView1" AutoGenerateEditButton="True"
ondatabound="gv_DataBound" runat="server" DataSourceID="SqlDataSource1"
AutoGenerateColumns="False" width="600px">
<Columns>
<asp:BoundField HeaderText="UserId"
DataField="UserId"
SortExpression="UserId" ItemStyle-Width="400px"></asp:BoundField>
</Columns>
</asp:GridView>
<!--
//THIS PROGRAM WILL UPLOAD IMAGE AND WILL RETRIVE FROM DATABASE. UNSING BLOB
(IF YOU HAVE ANY QUERY CONTACT:[email protected])
CREATE TABLE `images` (
`id` int(100) NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
`image` longblob NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB ;
-->
<!-- this form is user to store images-->
<form action="index.php" method="post" enctype="multipart/form-data">
Enter the Image Name:<input type="text" name="image_name" id="" /><br />
<input name="image" id="image" accept="image/JPEG" type="file"><br /><br />
<input type="submit" value="submit" name="submit" />
</form>
<br /><br />
<!-- this form is user to display all the images-->
<form action="index.php" method="post" enctype="multipart/form-data">
Retrive all the images:
<input type="submit" value="submit" name="retrive" />
</form>
<?php
//THIS IS INDEX.PHP PAGE
//connect to database.db name is images
mysql_connect("", "", "") OR DIE (mysql_error());
mysql_select_db ("") OR DIE ("Unable to select db".mysql_error());
//to retrive send the page to another page
if(isset($_POST['retrive']))
{
header("location:search.php");
}
//to upload
if(isset($_POST['submit']))
{
if(isset($_FILES['image'])) {
$name=$_POST['image_name'];
$email=$_POST['mail'];
$fp=addslashes(file_get_contents($_FILES['image']['tmp_name'])); //will store the image to fp
}
// our sql query
$sql = "INSERT INTO images VALUES('null', '{$name}','{$fp}');";
mysql_query($sql) or die("Error in Query insert: " . mysql_error());
}
?>
<?php
//SEARCH.PHP PAGE
//connect to database.db name = images
mysql_connect("localhost", "root", "") OR DIE (mysql_error());
mysql_select_db ("image") OR DIE ("Unable to select db".mysql_error());
//display all the image present in the database
$msg="";
$sql="select * from images";
if(mysql_query($sql))
{
$res=mysql_query($sql);
while($row=mysql_fetch_array($res))
{
$id=$row['id'];
$name=$row['name'];
$image=$row['image'];
$msg.= '<a href="search.php?id='.$id.'"><img src="data:image/jpeg;base64,'.base64_encode($row['image']). ' " /> </a>';
}
}
else
$msg.="Query failed";
?>
<div>
<?php
echo $msg;
?>
You can place a TEXTAREA of similar size under your DIV, so the standard control's frame would be visible around div.
It's probably good to set it to be disabled, to prevent accidental focus stealing.
A threadpool is at core a set of threads all bound to a function working as an event loop. These threads will endlessly wait for a task to be executed, or their own termination.
The threadpool job is to provide an interface to submit jobs, define (and perhaps modify) the policy of running these jobs (scheduling rules, thread instantiation, size of the pool), and monitor the status of the threads and related resources.
So for a versatile pool, one must start by defining what a task is, how it is launched, interrupted, what is the result (see the notion of promise and future for that question), what sort of events the threads will have to respond to, how they will handle them, how these events shall be discriminated from the ones handled by the tasks. This can become quite complicated as you can see, and impose restrictions on how the threads will work, as the solution becomes more and more involved.
The current tooling for handling events is fairly barebones(*): primitives like mutexes, condition variables, and a few abstractions on top of that (locks, barriers). But in some cases, these abstrations may turn out to be unfit (see this related question), and one must revert to using the primitives.
Other problems have to be managed too:
How would these play out in your setting?
This answer to a similar question points to an existing implementation meant for boost and the stl.
I offered a very crude implementation of a threadpool for another question, which doesn't address many problems outlined above. You might want to build up on it. You might also want to have a look of existing frameworks in other languages, to find inspiration.
(*) I don't see that as a problem, quite to the contrary. I think it's the very spirit of C++ inherited from C.
Differences
Use ArrayLists if there is no specific requirement to use Vectors.
Synchronization
If multiple threads access an ArrayList concurrently then we must externally synchronize the block of code which modifies the list either structurally or simply modifies an element. Structural modification means addition or deletion of element(s) from the list. Setting the value of an existing element is not a structural modification.
Collections.synchronizedList
is normally used at the time of creation of the list to avoid any accidental unsynchronized access to the list.
Data growth
Internally, both the ArrayList and Vector hold onto their contents using an Array. When an element is inserted into an ArrayList or a Vector, the object will need to expand its internal array if it runs out of room. A Vector defaults to doubling the size of its array, while the ArrayList increases its array size by 50 percent.
Make sure the hamcrest jar is higher on the import order than your JUnit jar.
JUnit comes with its own org.hamcrest.Matcher
class that is probably being used instead.
You can also download and use the junit-dep-4.10.jar instead which is JUnit without the hamcrest classes.
mockito also has the hamcrest classes in it as well, so you may need to move\reorder it as well
To answer the question. stringstream
basically allows you to treat a string
object like a stream
, and use all stream
functions and operators on it.
I saw it used mainly for the formatted output/input goodness.
One good example would be c++
implementation of converting number to stream object.
Possible example:
template <class T>
string num2str(const T& num, unsigned int prec = 12) {
string ret;
stringstream ss;
ios_base::fmtflags ff = ss.flags();
ff |= ios_base::floatfield;
ff |= ios_base::fixed;
ss.flags(ff);
ss.precision(prec);
ss << num;
ret = ss.str();
return ret;
};
Maybe it's a bit complicated but it is quite complex. You create stringstream
object ss
, modify its flags, put a number into it with operator<<
, and extract it via str()
. I guess that operator>>
could be used.
Also in this example the string
buffer is hidden and not used explicitly. But it would be too long of a post to write about every possible aspect and use-case.
Note: I probably stole it from someone on SO and refined, but I don't have original author noted.
Here's the list of all Win32 error codes. You can use this page to lookup the error code mentioned in IIS logs:
http://msdn.microsoft.com/en-us/library/ms681381.aspx
You can also use command line utility net
to find information about a Win32 error code. The syntax would be:
net helpmsg Win32_Status_Code
Use UIWindow
or UIView
's safeAreaInsets
.bottom
.top
.left
.right
// #available(iOS 11.0, *)
// height - UIApplication.shared.keyWindow!.safeAreaInsets.bottom
// On iPhoneX
// UIApplication.shared.keyWindow!.safeAreaInsets.top = 44
// UIApplication.shared.keyWindow!.safeAreaInsets.bottom = 34
// Other devices
// UIApplication.shared.keyWindow!.safeAreaInsets.top = 0
// UIApplication.shared.keyWindow!.safeAreaInsets.bottom = 0
// example
let window = UIApplication.shared.keyWindow!
let viewWidth = window.frame.size.width
let viewHeight = window.frame.size.height - window.safeAreaInsets.bottom
let viewFrame = CGRect(x: 0, y: 0, width: viewWidth, height: viewHeight)
let aView = UIView(frame: viewFrame)
aView.backgroundColor = .red
view.addSubview(aView)
aView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
This solution worked for me.
<html>
<body>
<form method="post" action="#">
<input type="text" id="number_id"/>
<input type="submit" value="send"/>
</form>
<p id="message"></p>
<script>
var flt=document.getElementById("number_id").value;
if(isNaN(flt)==false && Number.isInteger(flt)==false)
{
document.getElementById("message").innerHTML="the number_id is a float ";
}
else
{
document.getElementById("message").innerHTML="the number_id is a Integer";
}
</script>
</body>
</html>
You can use a simple regex like this:
public static string StripHTML(string input)
{
return Regex.Replace(input, "<.*?>", String.Empty);
}
Be aware that this solution has its own flaw. See Remove HTML tags in String for more information (especially the comments of @mehaase)
Another solution would be to use the HTML Agility Pack.
You can find an example using the library here: HTML agility pack - removing unwanted tags without removing content?