Not sure what language you're using (you didn't specify), but you should be able to "escape" the quotation mark character with a backslash: "\"ROM\""
Try using cURL
set_time_limit(0); // unlimited max execution time
$options = array(
CURLOPT_FILE => '/path/to/download/the/file/to.zip',
CURLOPT_TIMEOUT => 28800, // set this to 8 hours so we dont timeout on big files
CURLOPT_URL => 'http://remoteserver.com/path/to/big/file.zip',
);
$ch = curl_init();
curl_setopt_array($ch, $options);
curl_exec($ch);
curl_close($ch);
I'm not sure but I believe with the CURLOPT_FILE
option it writes as it pulls the data, ie. not buffered.
you can use this
List<Car> requiredCars = cars.stream()
.filter (t-> t!= null && StringUtils.startsWith(t.getName(),"M"))
.collect(Collectors.toList());
In addition to the anwser of Bill the Lizard:
Most of the backends parse the raw post data. In PHP for example, you will have an array $_POST
in which individual variables within the post data will be stored. In this case you have to use an additional header "Content-type: application/x-www-form-urlencoded"
:
Set objHTTP = CreateObject("WinHttp.WinHttpRequest.5.1")
URL = "http://www.somedomain.com"
objHTTP.Open "POST", URL, False
objHTTP.setRequestHeader "User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"
objHTTP.setRequestHeader "Content-type", "application/x-www-form-urlencoded"
objHTTP.send ("var1=value1&var2=value2&var3=value3")
Otherwise you have to read the raw post data on the variable "$HTTP_RAW_POST_DATA"
.
It helps to make a clear distinction between the function foo, and the generator foo(n):
def foo(n):
yield n
yield n+1
foo is a function. foo(6) is a generator object.
The typical way to use a generator object is in a loop:
for n in foo(6):
print(n)
The loop prints
# 6
# 7
Think of a generator as a resumable function.
yield
behaves like return
in the sense that values that are yielded get "returned" by the generator. Unlike return, however, the next time the generator gets asked for a value, the generator's function, foo, resumes where it left off -- after the last yield statement -- and continues to run until it hits another yield statement.
Behind the scenes, when you call bar=foo(6)
the generator object bar is defined for you to have a next
attribute.
You can call it yourself to retrieve values yielded from foo:
next(bar) # Works in Python 2.6 or Python 3.x
bar.next() # Works in Python 2.5+, but is deprecated. Use next() if possible.
When foo ends (and there are no more yielded values), calling next(bar)
throws a StopInteration error.
in which element is currently the class '.bar' ? Here is another solution but it's up to you.
var reg = /Image/g, // regexp for an image element
query = document.querySelector('.bar'); // returns [object HTMLImageElement]
query += this.toString(); // turns object into a string
if (query.match(reg)) { // checks if it matches
alert('the class .bar is attached to the following Element:\n' + query);
}
Of course this is only a lookup for 1 simple element <img>
(/Image/g
) but you can put all in an array like <li>
is /LI/g
, <ul>
= /UL/g
etc.
I'd use a templating library like TemplateMachine. this allows you mostly put your email template together with normal text and then use rules to inject/replace values as necessary. Very similar to ERB in Ruby. This allows you to separate the generation of the mail content without tying you too heavily to something like ASPX etc. then once the content is generated with this, you can email away.
Download the file from http://www.java2s.com/Code/Jar/STUVWXYZ/Downloadjavaxservletjar.htm
Make a folder ("lib") inside the project folder and move that jar file to there.
In Eclipse, right click on project > BuildPath > Configure BuildPath > Libraries > Add External Jar
Thats all
cv2 vs. "opencv3"
To get a potential misunderstanding out of the way:
The python OpenCV module is named and imported via import cv2
in all versions > 2.0, including > 3.0. If you want to work with cv2
, installing OpenCV versions > 3 is fine - unless you're looking for specific compatibility with older versions or are a fan of the 2.4.x versions. The switch from 2.4.x to 3.x was in 2015 and in terms of features, speed and transparency, it makes much sense to use the newer versions. You can read here and here about major differences. 2.4.x versions are still supported though, current release is 2.4.13.5.
Installing a specific version, e.g. OpenCV 2.4.9
That said:
If you want to install a specific version that neither pip install opencv-python==2.4.X
, sudo apt-get install opencv
nor conda install opencv=2.4.x
provide (as explained by other answers here), you can always install from sources. In the sourceforge repository you can find all major versions for each operating system. Although for unxeperienced users this might be scary, it is well explained in some tutorials. E.g. here for 2.4.9 on Ubuntu 14.04. Or here is the official Linux install doc for the latest release 2.4.13.5.
In essence, the install process boils down to:
install dependencies, refer to docs (e.g. here) for required packages
get sources from OpenCVs sourceforge
e.g. wget http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.9/opencv-2.4.9.zip
unzip sources and prepare build by creating build directory and running cmake
mkdir build
cd build
cmake (... your build options ...)
build in the created build directory with:
make
sudo make install
Some ad-hoc code:
row_format ="{:>15}" * (len(teams_list) + 1)
print(row_format.format("", *teams_list))
for team, row in zip(teams_list, data):
print(row_format.format(team, *row))
This relies on str.format()
and the Format Specification Mini-Language.
Not sure whether I miss the point, but I think none of the answers here are "simple" state machines. What i usually call a simple state machine is using a loop with a switch inside. That is what we used in PLC / microchip programming or in C/C++ programming at the university.
advantages:
disadvantages:
It looked like that:
public enum State
{
First,
Second,
Third,
}
static void Main(string[] args)
{
var state = State.First;
// x and i are just examples for stuff that you could change inside the state and use for state transitions
var x = 0;
var i = 0;
// does not have to be a while loop. you could loop over the characters of a string too
while (true)
{
switch (state)
{
case State.First:
// Do sth here
if (x == 2)
state = State.Second;
// you may or may not add a break; right after setting the next state
// or do sth here
if (i == 3)
state = State.Third;
// or here
break;
case State.Second:
// Do sth here
if (x == 10)
state = State.First;
// or do sth here
break;
case State.Third:
// Do sth here
if (x == 10)
state = State.First;
// or do sth here
break;
default:
// you may wanna throw an exception here.
break;
}
}
}
if it should be really a state machine on which you call methods which react depending on which state you are in differently: state design pattern is the better approach
I know this is an old question, but in Python 3.7 you can do this using asyncio
and aiohttp
.
import asyncio
import aiohttp
from aiohttp import ClientSession, ClientConnectorError
async def fetch_html(url: str, session: ClientSession, **kwargs) -> tuple:
try:
resp = await session.request(method="GET", url=url, **kwargs)
except ClientConnectorError:
return (url, 404)
return (url, resp.status)
async def make_requests(urls: set, **kwargs) -> None:
async with ClientSession() as session:
tasks = []
for url in urls:
tasks.append(
fetch_html(url=url, session=session, **kwargs)
)
results = await asyncio.gather(*tasks)
for result in results:
print(f'{result[1]} - {str(result[0])}')
if __name__ == "__main__":
import pathlib
import sys
assert sys.version_info >= (3, 7), "Script requires Python 3.7+."
here = pathlib.Path(__file__).parent
with open(here.joinpath("urls.txt")) as infile:
urls = set(map(str.strip, infile))
asyncio.run(make_requests(urls=urls))
You can read more about it and see an example here.
Use
Console.WriteLine(String.Format(" {0:G17}", i));
That will give you all the 17 digits it have. By default, a Double value contains 15 decimal digits of precision, although a maximum of 17 digits is maintained internally. {0:R} will not always give you 17 digits, it will give 15 if the number can be represented with that precision.
which returns 15 digits if the number can be represented with that precision or 17 digits if the number can only be represented with maximum precision. There isn't any thing you can to do to make the the double return more digits that is the way it's implemented. If you don't like it do a new double class yourself...
.NET's double cant store any more digits than 17 so you cant see 6.89999999999999946709 in the debugger you would see 6.8999999999999995. Please provide an image to prove us wrong.
To fetch even records
select *
from (select id,row_number() over (order by id) as r from table_name) T
where mod(r,2)=0;
To fetch odd records
select *
from (select id,row_number() over (order by id) as r from table_name) T
where mod(r,2)=1;
I just had this issue and it was because of me trying to included jQuery via http while my page was loaded as https.
Go to this JVM online test and run it.
Then check the architecture displayed: x86_64 means you have the 64bit version installed, otherwise it's 32bit.
I found a solution to this. It's bloody witchcraft, but it works.
When you install the client, open Control Panel > Network Connections.
You'll see a disabled network connection that was added by the TAP installer (Local Area Connection 3 or some such).
Right Click it, click Enable.
The device will not reset itself to enabled, but that's ok; try connecting w/ the client again. It'll work.
Ask first yourself: Is your file an internal component of your application? (That usually implies that it's packed inside your JAR, or WAR if it is a web-app; typically, it's some configuration file or static resource, read-only).
If the answer is yes, you don't want to specify an absolute path for the file. But you neither want to access it with a relative path (as your example), because Java assumes that path is relative to the "current directory". Usually the preferred way for this scenario is to load it relatively from the classpath.
Java provides you the classLoader.getResource() method for doing this. And Eclipse (in the normal setup) assumes src/
is to be in the root of your classpath, so that, after compiling, it copies everything to your output directory ( bin/
), the java files in compiled form ( .class
), the rest as is.
So, for example, if you place your file in src/Files/myfile.txt
, it will be copied at compile time to bin/Files/myfile.txt
; and, at runtime, bin/
will be in (the root of) your classpath. So, by calling getResource("/Files/myfile.txt")
(in some of its variants) you will be able to read it.
Edited: Further, if your file is conceptually tied to a java class (eg, some com.example.MyClass
has a MyClass.cfg
associated configuration file), you can use the getResource() method from the class and use a (resource) relative path: MyClass.getResource("MyClass.cfg")
. The file then will be searched in the classpath, but with the class package pre-appended. So that, in this scenario, you'll typically place your MyClass.cfg
and MyClass.java
files in the same directory.
In my case, I was using Glide library and the image passed to it was null. So it was throwing this error. I put a check like this:
if (imageData != null) {
// add value in View here
}
And it worked fine. Hope this helps someone.
You can try this:table1.GroupBy(t => t.Text).Select(shape => shape.r)).Distinct();
The cleanest way to check for admin privileges using a CMD script, that I have found, is something like this:
@echo off
REM Calling verify with no args just checks the verify flag,
REM we use this for its side effect of setting errorlevel to zero
verify >nul
REM Attempt to read a particular system directory - the DIR
REM command will fail with a nonzero errorlevel if the directory is
REM unreadable by the current process. The DACL on the
REM c:\windows\system32\config\systemprofile directory, by default,
REM only permits SYSTEM and Administrators.
dir %windir%\system32\config\systemprofile >nul 2>nul
REM Use IF ERRORLEVEL or %errorlevel% to check the result
if not errorlevel 1 echo has Admin privs
if errorlevel 1 echo has only User privs
This method only uses CMD.exe builtins, so it should be very fast. It also checks for the actual capabilities of the process rather than checking for SIDs or group memberships, so the effective permission is tested. And this works as far back as Windows 2003 and XP. Normal user processes or nonelevated processes fail the directory probe, where as Admin or elevated processes succeed.
You can use a C preprocessor (like mcpp) and rig it into your .csproj file. Then you chnage "build action" on your source file from Compile to Preprocess or whatever you call it. Just add BeforBuild to your .csproj like this:
<Target Name="BeforeBuild" Inputs="@(Preprocess)" Outputs="@(Preprocess->'%(Filename)_P.cs')">
<Exec Command="..\Bin\cpp.exe @(Preprocess) -P -o %(RelativeDir)%(Filename)_P.cs" />
<CreateItem Include="@(Preprocess->'%(RelativeDir)%(Filename)_P.cs')">
<Output TaskParameter="Include" ItemName="Compile" />
</CreateItem>
You may have to manually change Compile to Preprocess on at least one file (in a text editor) - then the "Preprocess" option should be available for selection in Visual Studio.
I know that macros are heavily overused and misused but removing them completely is equally bad if not worse. A classic example of macro usage would be NotifyPropertyChanged. Every programmer who had to rewrite this code by hand thousands of times knows how painful it is without macros.
Type "gg" in command mode. This brings the cursor to the first line.
One thing, regardless of how you initialize the field, use of the final
qualifier, if possible, will ensure the visibility of the field's value in a multi-threaded environment.
You need to do
Update table_xpto
set column_xpto = x.xpto_New
,column2 = x.column2New
from table_xpto xpto
inner join table_xptoNew xptoNew ON xpto.bla = xptoNew.Bla
where <clause where>
If you need a better answer, you can give us more information :)
for Sprig-boot User both PropertyPlaceholderConfigurer and the new PropertySourcesPlaceholderConfigurer added in Spring 3.1. so it's straightforward to access properties file. just inject
Note: Make sure your property must not be Static
@Value("${key.value1}")
private String value;
Probably working Perl solution, if the string is on one line:
my $NesteD ;
$NesteD = qr/ \{( [^{}] | (??{ $NesteD }) )* \} /x ;
if ( $Stringy =~ m/\b( \w+$NesteD )/x ) {
print "Found: $1\n" ;
}
HTH
EDIT: check:
And one more thing by Torsten Marek (who had pointed out correctly, that it's not a regex anymore):
Simple way to say is: If you implement interface that means you are implementing all methods of it and if you extending the class you are inheriting method of your choice... In this case,there is only a one method named Run() so better to implement Runnable interface..
$myArray = [];
Creates empty array.
You can push values onto the array later, like so:
$myArray[] = "tree";
$myArray[] = "house";
$myArray[] = "dog";
At this point, $myArray contains "tree", "house" and "dog". Each of the above commands appends to the array, preserving the items that were already there.
Having come from other languages, this way of appending to an array seemed strange to me. I expected to have to do something like $myArray += "dog" or something... or maybe an "add()" method like Visual Basic collections have. But this direct append syntax certainly is short and convenient.
You actually have to use the unset() function to remove items:
unset($myArray[1]);
... would remove "house" from the array (arrays are zero-based).
unset($myArray);
... would destroy the entire array.
To be clear, the empty square brackets syntax for appending to an array is simply a way of telling PHP to assign the indexes to each value automatically, rather than YOU assigning the indexes. Under the covers, PHP is actually doing this:
$myArray[0] = "tree";
$myArray[1] = "house";
$myArray[2] = "dog";
You can assign indexes yourself if you want, and you can use any numbers you want. You can also assign index numbers to some items and not others. If you do that, PHP will fill in the missing index numbers, incrementing from the largest index number assigned as it goes.
So if you do this:
$myArray[10] = "tree";
$myArray[20] = "house";
$myArray[] = "dog";
... the item "dog" will be given an index number of 21. PHP does not do intelligent pattern matching for incremental index assignment, so it won't know that you might have wanted it to assign an index of 30 to "dog". You can use other functions to specify the increment pattern for an array. I won't go into that here, but its all in the PHP docs.
Cheers,
-=Cameron
If you want to use something similar to the JavaScript, you just need to convert to strings first:
Console.WriteLine(mon.ToString() + "." + da.ToString() + "." + yer.ToString());
But a (much) better way would be to use the format option:
Console.WriteLine("{0}.{1}.{2}", mon, da, yer);
I was having the same exact problem, I wasnt being asked for a password, and it seems that I had the wrong path for the keystore file.
In fact, if the keytool doesn't find the keystore you have set, it will create one and give you the wrong key since it isn't using the correct one.
The general rule is that if you aren't being asked for a password then you have the wrong key being generated.
You should put your model class before create_all()
call, like this:
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql+psycopg2://login:pass@localhost/flask_app'
db = SQLAlchemy(app)
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(80), unique=True)
email = db.Column(db.String(120), unique=True)
def __init__(self, username, email):
self.username = username
self.email = email
def __repr__(self):
return '<User %r>' % self.username
db.create_all()
db.session.commit()
admin = User('admin', '[email protected]')
guest = User('guest', '[email protected]')
db.session.add(admin)
db.session.add(guest)
db.session.commit()
users = User.query.all()
print users
If your models are declared in a separate module, import them before calling create_all()
.
Say, the User
model is in a file called models.py
,
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql+psycopg2://login:pass@localhost/flask_app'
db = SQLAlchemy(app)
# See important note below
from models import User
db.create_all()
db.session.commit()
admin = User('admin', '[email protected]')
guest = User('guest', '[email protected]')
db.session.add(admin)
db.session.add(guest)
db.session.commit()
users = User.query.all()
print users
Important note: It is important that you import your models after initializing the db
object since, in your models.py
_you also need to import the db
object from this module.
If you are using the table interface you can type in NULL (all caps)
otherwise you can run an update statement where you could:
Update table set ColumnName = NULL where [Filter for record here]
Hi everyone I found the solution regarding this github issue and it works for me no longer able to use private ssh key
Try following theses steps:
1 - Use HTTPS if possible. That will avoid SSH keys entirely.
2 - Manually add the SSH key to the running SSH agent. See manually generate ssh key
3 - If the two others doesn't work, delete all your ssh keys and generate some new one thats what I did after weeks of issues.
Hope it will help you..
More specifically to what is being asked. Pass in a String and a position to check. Very close to Josh's except that this one will compare a larger string. Would have added as a comment but I don't have that ability yet.
function isUpperCase(myString, pos) {
return (myString.charAt(pos) == myString.charAt(pos).toUpperCase());
}
function isLowerCase(myString, pos) {
return (myString.charAt(pos) == myString.charAt(pos).toLowerCase());
}
Get the current Windows username:
using System;
class Sample
{
public static void Main()
{
Console.WriteLine();
// <-- Keep this information secure! -->
Console.WriteLine("UserName: {0}", Environment.UserName);
}
}
Open Control Panel - Programs - Turn Windows Features on or off expand - Internet Information Services expand - World Wide Web Services expand - Application development Features check - ASP.Net
Its advisable you check other feature to avoid future problem that might not give direct error messages Please don't forget to mark this question as answered if it solves your problem for the purpose of others
It could be useful to change the encoding just on the command line before the file is read:
rem On MicroSoft Windows
vim --cmd "set encoding=utf-8" file.ext
# In *nix shell
vim --cmd 'set encoding=utf-8' file.ext
assuming you have a SQL table called mydata - you can load data from a csv file as follows:
COPY MYDATA FROM '<PATH>/MYDATA.CSV' CSV HEADER;
For more details refer to: http://www.postgresql.org/docs/9.2/static/sql-copy.html
Bootstrap Version
<a class="btn btn-danger" role="button" href="path_to_file"
download="proposed_file_name">
Download
</a>
Documented in Bootstrap 4 docs, and works in Bootstrap 3 as well.
The error raised here is in importing the python module. This can be solved by adding the python site-packages folder to the environment variable $PYTHONPATH on OS X. So we can add the following command to the .bash_profile file:
export PYTHONPATH="$PYTHONPATH:/usr/local/lib/pythonx.x/site-packages/"
*replace x.x with the python version you are using
You can use socket.settimeout()
which accepts a integer argument representing number of seconds. For example, socket.settimeout(1)
will set the timeout to 1 second
As far as I can tell there is no upper limit in 2008.
In SQL Server 2005 the code in your question fails on the assignment to the @GGMMsg
variable with
Attempting to grow LOB beyond maximum allowed size of 2,147,483,647 bytes.
the code below fails with
REPLICATE: The length of the result exceeds the length limit (2GB) of the target large type.
However it appears these limitations have quietly been lifted. On 2008
DECLARE @y VARCHAR(MAX) = REPLICATE(CAST('X' AS VARCHAR(MAX)),92681);
SET @y = REPLICATE(@y,92681);
SELECT LEN(@y)
Returns
8589767761
I ran this on my 32 bit desktop machine so this 8GB string is way in excess of addressable memory
Running
select internal_objects_alloc_page_count
from sys.dm_db_task_space_usage
WHERE session_id = @@spid
Returned
internal_objects_alloc_page_co
------------------------------
2144456
so I presume this all just gets stored in LOB
pages in tempdb
with no validation on length. The page count growth was all associated with the SET @y = REPLICATE(@y,92681);
statement. The initial variable assignment to @y
and the LEN
calculation did not increase this.
The reason for mentioning this is because the page count is hugely more than I was expecting. Assuming an 8KB page then this works out at 16.36 GB which is obviously more or less double what would seem to be necessary. I speculate that this is likely due to the inefficiency of the string concatenation operation needing to copy the entire huge string and append a chunk on to the end rather than being able to add to the end of the existing string. Unfortunately at the moment the .WRITE
method isn't supported for varchar(max) variables.
Addition
I've also tested the behaviour with concatenating nvarchar(max) + nvarchar(max)
and nvarchar(max) + varchar(max)
. Both of these allow the 2GB limit to be exceeded. Trying to then store the results of this in a table then fails however with the error message Attempting to grow LOB beyond maximum allowed size of 2147483647 bytes.
again. The script for that is below (may take a long time to run).
DECLARE @y1 VARCHAR(MAX) = REPLICATE(CAST('X' AS VARCHAR(MAX)),2147483647);
SET @y1 = @y1 + @y1;
SELECT LEN(@y1), DATALENGTH(@y1) /*4294967294, 4294967292*/
DECLARE @y2 NVARCHAR(MAX) = REPLICATE(CAST('X' AS NVARCHAR(MAX)),1073741823);
SET @y2 = @y2 + @y2;
SELECT LEN(@y2), DATALENGTH(@y2) /*2147483646, 4294967292*/
DECLARE @y3 NVARCHAR(MAX) = @y2 + @y1
SELECT LEN(@y3), DATALENGTH(@y3) /*6442450940, 12884901880*/
/*This attempt fails*/
SELECT @y1 y1, @y2 y2, @y3 y3
INTO Test
SLF4J 1.5.11 and 1.6.0 versions are not compatible (see compatibility report) because the argument list of org.slf4j.spi.LocationAwareLogger.log
method has been changed (added Object[] p5):
SLF4J 1.5.11:
LocationAwareLogger.log ( org.slf4j.Marker p1, String p2, int p3,
String p4, Throwable p5 )
SLF4J 1.6.0:
LocationAwareLogger.log ( org.slf4j.Marker p1, String p2, int p3,
String p4, Object[] p5, Throwable p6 )
See compatibility reports for other SLF4J versions on this page.
You can generate such reports by the japi-compliance-checker tool.
If you need VBA, you could do something quick like this:
Sub Test()
With ActiveSheet
lastRow = .Cells(.Rows.Count, "A").End(xlUp).Row
MsgBox lastRow
End With
End Sub
This will print the number of the last row with data in it. Obviously don't need MsgBox in there if you're using it for some other purpose, but lastRow will become that value nonetheless.
You have at least 5 different ways to view the commit you currently have checked out into your working copy during a git bisect
session (note that options 1-4 will also work when you're not doing a bisect):
git show
.git log -1
.git status
.git bisect visualize
.I'll explain each option in detail below.
As explained in this answer to the general question of how to determine which commit you currently have checked-out (not just during git bisect
), you can use git show
with the -s
option to suppress patch output:
$ git show --oneline -s
a9874fd Merge branch 'epic-feature'
You can also simply do git log -1
to find out which commit you're currently on.
$ git log -1 --oneline
c1abcde Add feature-003
In Git version 1.8.3+ (or was it an earlier version?), if you have your Bash prompt configured to show the current branch you have checked out into your working copy, then it will also show you the current commit you have checked out during a bisect session or when you're in a "detached HEAD" state. In the example below, I currently have c1abcde
checked out:
# Prompt during a bisect
user ~ (c1abcde...)|BISECTING $
# Prompt at detached HEAD state
user ~ (c1abcde...) $
Also as of Git version 1.8.3+ (and possibly earlier, again not sure), running git status
will also show you what commit you have checked out during a bisect and when you're in detached HEAD state:
$ git status
# HEAD detached at c1abcde <== RIGHT HERE
Finally, while you're doing a git bisect
, you can also simply use git bisect visualize
or its built-in alias git bisect view
to launch gitk
, so that you can graphically view which commit you are on, as well as which commits you have marked as bad and good so far. I'm pretty sure this existed well before version 1.8.3, I'm just not sure in which version it was introduced:
git bisect visualize
git bisect view # shorter, means same thing
C++ provides a good mechanism to manage the life time of an object though class/struct constructs. This is one of the best features of C++ over other languages.
When you have member variables exposed through ref or pointer it violates the encapsulation in principle. This idiom enables the consumer of the class to change the state of an object of A without it(A) having any knowledge or control of it. It also enables the consumer to hold on to a ref/pointer to A's internal state, beyond the life time of the object of A. This is bad design. Instead the class could be refactored to hold a ref/pointer to the shared object (not own it) and these could be set using the constructor (Mandate the life time rules). The shared object's class may be designed to support multithreading/concurrency as the case may apply.
One of the challenges I had with the answers is that it assumed that the object was a single level. For example,
const testObj = { testKey: 'testValue' }
const refString = 'testKey';
const refObj = testObj[refString];
works fine, but
const testObj = { testKey:
{ level2Key: 'level2Value' }
}
const refString = 'testKey.level2Key';
const refObj = testObj[refString];
does not work.
What I ended up doing was building a function to access multi-level objects:
objVar(str) {
let obj = this;
const parts = str.split('.');
for (let p of parts) {
obj = obj[p];
}
return obj;
}
In the second scenario, then, I can pass the string to this function to get back the object I'm looking for:
const testObj = { testKey:
{ level2Key: 'level2Value' }
}
const refString = 'testObj.testKey.level2Key';
const refObj = objVar[refString];
Homebrew's services
tap integrates formulas with the launchctl
manager. Adding it is easy:
brew tap homebrew/services
You can then launch MongoDB with this command (this will also start mongodb on boot):
brew services start mongodb
You can also use stop
or restart
:
brew services stop mongodb
brew services restart mongodb
Taken from the NSString reference, you can use :
NSString *theFileName = [[string lastPathComponent] stringByDeletingPathExtension];
The lastPathComponent
call will return thefile.ext
, and the stringByDeletingPathExtension
will remove the extension suffix from the end.
You should not use your domain models
in your views. ViewModels
are the correct way to do it.
You need to map your domain model's necessary fields to viewmodel and then use this viewmodel in your controllers. This way you will have the necessery abstraction in your application.
If you never heard of viewmodels, take a look at this.
Use the below function.
function utf8_converter($array)
{
array_walk_recursive($array, function (&$item, $key) {
if (!mb_detect_encoding($item, 'utf-8', true)) {
$item = utf8_encode($item);
}
});
return $array;
}
If you want to work with xlsx, you'll have to use the org.apache.poi.ss
package. This package has class XSSF, which can be used for parsing xlxs file. This Sample code works on Excel 2007 or later (.xlsx)
OPCPackage pkg = OPCPackage.open(new ByteArrayInputStream(data));
Workbook wb = new XSSFWorkbook(pkg);
Sheet sheet = wb.getSheetAt(0);
Iterator<Row> rows = sheet.rowIterator();
while (rows.hasNext()) {
int j = 5;
Person person= new Person ();
Row row = rows.next();
if (row.getRowNum() > 0) {
person.setPersonId((int)(row.getCell(0).getNumericCellValue()));
person.setFirstName(row.getCell(1).getStringCellValue());
person.setLastName(row.getCell(2).getStringCellValue());
person.setGroupId((int)(row.getCell(3).getNumericCellValue()));
person.setUserName(row.getCell(4).getStringCellValue());
person.setCreditId((int)(row.getCell(5).getNumericCellValue()));
}
}
Excel 1998-2003 file (.xls) - you may use HSSF library.
just use : Workbook wb = new HSSFWorkbook(pkg);
You need to use dynamic SQL to achieve this; something like:
DECLARE
TYPE cur_type IS REF CURSOR;
CURSOR client_cur IS
SELECT DISTING username
FROM all_users
WHERE length(username) = 3;
emails_cur cur_type;
l_cur_string VARCHAR2(128);
l_email_id <type>;
l_name <type>;
BEGIN
FOR client IN client_cur LOOP
dbms_output.put_line('Client is '|| client.username);
l_cur_string := 'SELECT id, name FROM '
|| client.username || '.org';
OPEN emails_cur FOR l_cur_string;
LOOP
FETCH emails_cur INTO l_email_id, l_name;
EXIT WHEN emails_cur%NOTFOUND;
dbms_output.put_line('Org id is ' || l_email_id
|| ' org name ' || l_name);
END LOOP;
CLOSE emails_cur;
END LOOP;
END;
/
Edited to correct two errors, and to add links to 10g documentation for OPEN-FOR
and an example.
Edited to make the inner cursor query a string variable.
Most likely JDK configuration is not valid, try to remove and add the JDK again as I've described in the related question here.
The CompileSdkVersion
is the version of the SDK platform your app works with for compilation, etc DURING the development process (you should always use the latest) This is shipped with the API version you are using
You will see this in your build.gradle
file:
targetSdkVersion:
contains the info your app ships with AFTER the development process to the app store that allows it to TARGET the SPECIFIED version of the Android platform
. Depending on the functionality of your app, it can target API versions lower than the current.For instance, you can target API 18 even if the current version is 23.
Take a good look at this official Google page.
if you only need the field names and types (perhaps for easy copy-pasting into Excel):
SELECT COLUMN_NAME, DATA_TYPE
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA='databasenamegoeshere'
AND DATA_TYPE='decimal' and TABLE_NAME = 'tablenamegoeshere'
remove
DATA_TYPE='decimal'
if you want all data types
I've recently used both Raphael and jQuery SVG - and here are my thoughts:
Pros: a good starter library, easy to do a LOT of things with SVG quickly. Well written and documented. Lots of examples and Demos. Very extensible architecture. Great with animation.
Cons: is a layer over the actual SVG markup, makes it difficult to do more complex things with SVG - such as grouping (it supports Sets, but not groups). Doesn't do great w/ editing of already existing elements.
Pros: a jquery plugin, if you're already using jQuery. Well written and documented. Lots of examples and demos. Supports most SVG elements, allows native access to elements easily
Cons: architecture not as extensible as Raphael. Some things could be better documented (like configure of SVG element). Doesn't do great w/ editing of already existing elements. Relies on SVG semantics for animation - which is not that great.
SnapSVG is the successor of Raphael. It is supported only in the SVG enabled browsers and supports almost all the features of SVG.
If you're doing something quick and easy, Raphael is an easy choice. If you're going to do something more complex, I chose to use jQuery SVG because I can manipulate the actual markup significantly easier than with Raphael. And if you want a non-jQuery solution then SnapSVG is a good option.
I think I just found a way to read MAC addresses without LOCATION permission: Run ip link
and parse its output. (you could probably do the similar by looking at this binary's source code)
svn revert deletedDirectory
Here's the documentation for the svn revert
command.
If deletedDirectory
was deleted using rmdir
and not svn rm
, you'll need to do
svn update deletedDirectory
instead.
You can try as.vector(t(test))
. Please note that, if you want to do it by columns you should use unlist(test)
.
I use MVC 3. An example of email address property in one of my classes is:
[Display(Name = "Email address")]
[Required(ErrorMessage = "The email address is required")]
[Email(ErrorMessage = "The email address is not valid")]
public string Email { get; set; }
Remove the Required
if the input is optional. No need for regular expressions although I have one which covers all of the options within an email address up to RFC 2822 level (it's very long).
A bit late to the game, but non of the above solutions pointed me in the direction of a pure and simple .NET, no json.net solution. So here it is, ended up being very simple. Below a full running example of how it is done with standard .NET Json serialization, the example has dictionary both in the root object and in the child objects.
The golden bullet is this cat, parse the settings as second parameter to the serializer:
DataContractJsonSerializerSettings settings =
new DataContractJsonSerializerSettings();
settings.UseSimpleDictionaryFormat = true;
Full code below:
using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
namespace Kipon.dk
{
public class JsonTest
{
public const string EXAMPLE = @"{
""id"": ""some id"",
""children"": {
""f1"": {
""name"": ""name 1"",
""subs"": {
""1"": { ""name"": ""first sub"" },
""2"": { ""name"": ""second sub"" }
}
},
""f2"": {
""name"": ""name 2"",
""subs"": {
""37"": { ""name"": ""is 37 in key""}
}
}
}
}
";
[DataContract]
public class Root
{
[DataMember(Name ="id")]
public string Id { get; set; }
[DataMember(Name = "children")]
public Dictionary<string,Child> Children { get; set; }
}
[DataContract]
public class Child
{
[DataMember(Name = "name")]
public string Name { get; set; }
[DataMember(Name = "subs")]
public Dictionary<int, Sub> Subs { get; set; }
}
[DataContract]
public class Sub
{
[DataMember(Name = "name")]
public string Name { get; set; }
}
public static void Test()
{
var array = System.Text.Encoding.UTF8.GetBytes(EXAMPLE);
using (var mem = new System.IO.MemoryStream(array))
{
mem.Seek(0, System.IO.SeekOrigin.Begin);
DataContractJsonSerializerSettings settings =
new DataContractJsonSerializerSettings();
settings.UseSimpleDictionaryFormat = true;
var ser = new DataContractJsonSerializer(typeof(Root), settings);
var data = (Root)ser.ReadObject(mem);
Console.WriteLine(data.Id);
foreach (var childKey in data.Children.Keys)
{
var child = data.Children[childKey];
Console.WriteLine(" Child: " + childKey + " " + child.Name);
foreach (var subKey in child.Subs.Keys)
{
var sub = child.Subs[subKey];
Console.WriteLine(" Sub: " + subKey + " " + sub.Name);
}
}
}
}
}
}
As dudewat said external linkage means the symbol (function or global variable) is accessible throughout your program and internal linkage means that it is only accessible in one translation unit.
You can explicitly control the linkage of a symbol by using the extern
and static
keywords. If the linkage is not specified then the default linkage is extern
(external linkage) for non-const
symbols and static
(internal linkage) for const
symbols.
// In namespace scope or global scope.
int i; // extern by default
const int ci; // static by default
extern const int eci; // explicitly extern
static int si; // explicitly static
// The same goes for functions (but there are no const functions).
int f(); // extern by default
static int sf(); // explicitly static
Note that instead of using static
(internal linkage), it is better to use anonymous namespaces into which you can also put class
es. Though they allow extern
linkage, anonymous namespaces are unreachable from other translation units, making linkage effectively static
.
namespace {
int i; // extern by default but unreachable from other translation units
class C; // extern by default but unreachable from other translation units
}
<form id='form'>
<input type='text' name='title'>
<input type='text' name='text'>
<input type='email' name='email'>
</form>
const element = document.getElementByID('#form')
const data = new FormData(element)
const form = Array.from(data.entries())
/*
form = [
["title", "a"]
["text", "b"]
["email", "c"]
]
*/
for (const [name, value] of form) {
console.log({ name, value })
/*
{name: "title", value: "a"}
{name: "text", value: "b"}
{name: "email", value: "c"}
*/
}
This is a common situation in all router versions if you are using the default HTML location strategy.
What happens is that the URL on the browser bar is a normal full HTML url, like for example: http://localhost/route
.
So when we hit Enter in the browser bar, there is an actual HTTP request sent to the server to get a file named route
.
The server does not have such file, and neither something like express is configured on the server to handle the request and provide a response, so the server return 404 Not Found, because it could not find the route
file.
What we would like is for the server to return the index.html
file containing the single page application. Then the router should kick in and process the /route
url and display the component mapped to it.
So to fix the issue we need to configure the server to return index.html
(assuming that is the name of your single page application file) in case the request could not be handled, as opposed to a 404 Not Found.
The way to do this will depend on the server side technology being used. If its Java for example you might have to write a servlet, in Rails it will be different, etc.
To give a concrete example, if for example you are using NodeJs, you would have to write a middleware like this:
function sendSpaFileIfUnmatched(req,res) {
res.sendFile("index.html", { root: '.' });
}
And then register it at the very end of the middleware chain:
app.use(sendSpaFileIfUnmatched);
This will serve index.html
instead of returning a 404, the router will kick in and everything will work as expected.
#!/usr/bin/python
# -*- coding: utf-8 -*-
# consume_wsdl_soap_ws_pss.py
import logging.config
from pysimplesoap.client import SoapClient
logging.config.dictConfig({
'version': 1,
'formatters': {
'verbose': {
'format': '%(name)s: %(message)s'
}
},
'handlers': {
'console': {
'level': 'DEBUG',
'class': 'logging.StreamHandler',
'formatter': 'verbose',
},
},
'loggers': {
'pysimplesoap.helpers': {
'level': 'DEBUG',
'propagate': True,
'handlers': ['console'],
},
}
})
WSDL_URL = 'http://www.webservicex.net/stockquote.asmx?WSDL'
client = SoapClient(wsdl=WSDL_URL, ns="web", trace=True)
client['AuthHeaderElement'] = {'username': 'someone', 'password': 'nottelling'}
#Discover operations
list_of_services = [service for service in client.services]
print(list_of_services)
#Discover params
method = client.services['StockQuote']
response = client.GetQuote(symbol='GOOG')
print('GetQuote: {}'.format(response['GetQuoteResult']))
Open Sql server 2014 Configuration Manager.
Click Sql server services and start the sql server service if it is stopped
Then click Check SQL server Network Configuration for TCP/IP Enabled
then restart the sql server management studio (SSMS) and connect your local database engine
axis = 0 means up to down axis = 1 means left to right
sums[key] = lang_sets[key].iloc[:,1:].sum(axis=0)
Given example is taking sum of all the data in column == key.
For many objects, you can use this code, replacing 'object' with the object you're interested in:
object_methods = [method_name for method_name in dir(object)
if callable(getattr(object, method_name))]
I discovered it at diveintopython.net (now archived). Hopefully, that should provide some further detail!
If you get an AttributeError
, you can use this instead:
getattr(
is intolerant of pandas style python3.6 abstract virtual sub-classes. This code does the same as above and ignores exceptions.
import pandas as pd
df = pd.DataFrame([[10, 20, 30], [100, 200, 300]],
columns=['foo', 'bar', 'baz'])
def get_methods(object, spacing=20):
methodList = []
for method_name in dir(object):
try:
if callable(getattr(object, method_name)):
methodList.append(str(method_name))
except:
methodList.append(str(method_name))
processFunc = (lambda s: ' '.join(s.split())) or (lambda s: s)
for method in methodList:
try:
print(str(method.ljust(spacing)) + ' ' +
processFunc(str(getattr(object, method).__doc__)[0:90]))
except:
print(method.ljust(spacing) + ' ' + ' getattr() failed')
get_methods(df['foo'])
With SQL Server you'd SELECT SCOPE_IDENTITY() to get the last identity value for the current process.
With SQlite, it looks like for an autoincrement you would do
SELECT last_insert_rowid()
immediately after your insert.
http://www.mail-archive.com/[email protected]/msg09429.html
In answer to your comment to get this value you would want to use SQL or OleDb code like:
using (SqlConnection conn = new SqlConnection(connString))
{
string sql = "SELECT last_insert_rowid()";
SqlCommand cmd = new SqlCommand(sql, conn);
conn.Open();
int lastID = (Int32) cmd.ExecuteScalar();
}
Using newInstance()
directly is deprecated as of Java 8. You need to use Class.getDeclaredConstructor(...).newInstance(...)
with the corresponding exceptions.
With the help of jquery, it can be done like this. Code:
$("input.custom-file-input").on("change",function(){if(this.files.length){var filename=this.file[0].name;if(filename.length>23){filename=filename.substr(0,11)+"..."+filename.substr(-10);}$(this).siblings(".custom-file-label").text(filename);}});
if you use typescript then you can :
import { Watch } from "vue-property-decorator";_x000D_
_x000D_
.._x000D_
_x000D_
@Watch("$store.state.something")_x000D_
private watchSomething() {_x000D_
// use this.$store.state.something for access_x000D_
..._x000D_
}
_x000D_
Put it inside your <footer>
by all means, but the most fitting element is the small element.
The HTML5 spec for this says:
Small print typically features disclaimers, caveats, legal restrictions, or copyrights. Small print is also sometimes used for attribution, or for satisfying licensing requirements.
I guess it might be because it is expecting a single value?
taken from the animate page on jQuery:
All animated properties should be animated to a single numeric value, except as noted below; most properties that are non-numeric cannot be animated using basic jQuery functionality. (For example, width, height, or left can be animated but background-color cannot be.) Property values are treated as a number of pixels unless otherwise specified. The units em and % can be specified where applicable.
Swift 4
extension String {
func convertToDictionary() -> [String: Any]? {
if let data = self.data(using: .utf8) {
do {
return try JSONSerialization.jsonObject(with: data, options: []) as? [String: Any]
} catch {
print(error.localizedDescription)
}
}
return nil
}
}
Alternatively you can try the basic thing to get your need,
<audio autoplay loop>
<source src="johann_sebastian_bach_air.mp3">
</audio>
For further reference click here
I think your answer will be background-size:cover
.
.ui-page
{
background: #000;
background-image:url(image.gif);
background-size:cover;
}
%(letter) denotes the format type of the replacement text. %s specifies a string, %d an integer, and %c a char.
Heres a script I made to auto create your .gitignore and .gitattributes files using Xcode... I hacked it together with a few other people's stuff. Have fun!
No warranties... I suck at most of this - so use at your own peril
When you're serving an .ico file to be used as a favicon, it doesn't matter. All major browsers recognize both mime types correctly. So you could put:
<!-- IE -->
<link rel="shortcut icon" type="image/x-icon" href="favicon.ico" />
<!-- other browsers -->
<link rel="icon" type="image/x-icon" href="favicon.ico" />
or the same with image/vnd.microsoft.icon
, and it will work with all browsers.
Note: There is no IANA specification for the MIME-type image/x-icon
, so it does appear that it is a little more unofficial than image/vnd.microsoft.icon
.
The only case in which there is a difference is if you were trying to use an .ico file in an <img>
tag (which is pretty unusual).
Based on previous testing, some browsers would only display .ico files as images when they were served with the MIME-type image/x-icon
. More recent tests show: Chromium, Firefox and Edge are fine with both content types, IE11 is not. If you can, just avoid using ico
files as images, use png
.
In Eclipse you can do it simply as follows :
Right click on your Java Project and select Export.
Select Java -> Runnable JAR file -> Next.
Select the Launch Configuration and choose project file as your Main class
Select the Destination folder where you would like to save it and click Finish.
Time changes everything. I was looking to do the same recently and came up with this:
added 02/17/2021
Stable Portal Page thanks Palec
added 12/18/2017
As indicated by shadowbq, the DirectoryId and TenantId both equate to the GUID representing the ActiveDirectory Tenant. Depending on context, either term may be used by Microsoft documentation and products, which can be confusing.
The tenant ID is tied to ActiveDirectoy in Azure
Yes I used paint, don't judge me.
to install uuid
npm install --save uuid
uuid is updated and the old import
const uuid= require('uuid/v4');
is not working and we should now use this import
const {v4:uuid} = require('uuid');
and for using it use as a funciton like this
const createdPlace = {
id: uuid(),
title,
description,
location:coordinates,
address,
creator
};
You can use form.get to get the specific control object and use setValue
this.form.get(<formControlName>).setValue(<newValue>);
This is the purpose of the rbundler package: to provide a way to control the packages that are installed for a specific project. Right now the package works with the devtools functionality to install packages to your project's directory. The functionality is similar to Ruby's bundler.
If your project is a package (recommended) then all you have to do is load rbundler and bundle the packages. The bundle
function will look at your package's DESCRIPTION
file to determine which packages to bundle.
library(rbundler)
bundle('.', repos="http://cran.us.r-project.org")
Now the packages will be installed in the .Rbundle directory.
If your project isn't a package, then you can fake it by creating a DESCRIPTION
file in your project's root directory with a Depends field that lists the packages that you want installed (with optional version information):
Depends: ggplot2 (>= 0.9.2), arm, glmnet
Here's the github repo for the project if you're interested in contributing: rbundler.
You can read a CSV file with headers into a NumPy structured array with np.genfromtxt. For example:
import numpy as np
csv_fname = 'file.csv'
with open(csv_fname, 'w') as fp:
fp.write("""\
"A","B","C","D","E","F","timestamp"
611.88243,9089.5601,5133.0,864.07514,1715.37476,765.22777,1.291111964948E12
611.88243,9089.5601,5133.0,864.07514,1715.37476,765.22777,1.291113113366E12
611.88243,9089.5601,5133.0,864.07514,1715.37476,765.22777,1.291120650486E12
""")
# Read the CSV file into a Numpy record array
r = np.genfromtxt(csv_fname, delimiter=',', names=True, case_sensitive=True)
print(repr(r))
which looks like this:
array([(611.88243, 9089.5601, 5133., 864.07514, 1715.37476, 765.22777, 1.29111196e+12),
(611.88243, 9089.5601, 5133., 864.07514, 1715.37476, 765.22777, 1.29111311e+12),
(611.88243, 9089.5601, 5133., 864.07514, 1715.37476, 765.22777, 1.29112065e+12)],
dtype=[('A', '<f8'), ('B', '<f8'), ('C', '<f8'), ('D', '<f8'), ('E', '<f8'), ('F', '<f8'), ('timestamp', '<f8')])
You can access a named column like this r['E']
:
array([1715.37476, 1715.37476, 1715.37476])
Note: this answer previously used np.recfromcsv to read the data into a NumPy record array. While there was nothing wrong with that method, structured arrays are generally better than record arrays for speed and compatibility.
This can happen when:
You have multiple copies of the Android SDK installed on your machine. You may be updating the available images and devices for one copy of the Android SDK, and trying to debug or run your application in another.
If you're using Eclipse, take a look at your "Preferences | Android | SDK Location". Make sure it's the path you expect. If not, change the path to point to where you think the Android SDK is installed.
You don't have an Android device setup in your emulator as detailed in other answers on this page.
You could create a function who consumes an list of int, transforms in string to concatenate and cast do int again, something like this:
import random
def generate_random_number(length):
return int(''.join([str(random.randint(0,10)) for _ in range(length)]))
If you use bash, then the terminal history is saved in a file called .bash_history. Delete it, and history will be gone.
However, for MySQL the better approach is not to enter the password in the command line. If you just specify the -p option, without a value, then you will be prompted for the password and it won't be logged.
Another option, if you don't want to enter your password every time, is to store it in a my.cnf file. Create a file named ~/.my.cnf with something like:
[client]
user = <username>
password = <password>
Make sure to change the file permissions so that only you can read the file.
Of course, this way your password is still saved in a plaintext file in your home directory, just like it was previously saved in .bash_history.
One easy solution is to use HTML entities instead of actual characters. For example, the "[email protected]" will be converted into :
<a href="mailto:me@example.com">email me</A>
use app:cardUseCompatPadding="true"
inside your cardview.
For Example
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginRight="@dimen/cardviewMarginRight"
app:cardBackgroundColor="@color/menudetailsbgcolor"
app:cardCornerRadius="@dimen/cardCornerRadius"
app:cardUseCompatPadding="true"
app:elevation="0dp">
</android.support.v7.widget.CardView>
=IF(CR<=10, "RED", if(CR<50, "YELLOW", if(CR<101, "GREEN")))
CR = ColRow (Cell)
This is an example. In this example when value in Cell is less then or equal to 10 then RED word will appear on that cell. In the same manner other if conditions are true if first if is false.
It can be done in your code via WMI. I've found a tool from Microsoft that creates code for it.
The WMI Code Creator tool allows you to generate VBScript, C#, and VB .NET code that uses WMI to complete a management task such as querying for management data, executing a method from a WMI class, or receiving event notifications using WMI.
You can download it here.
Your JSX code will compile into pure JavaScript code, any tags will be replaced by ReactElement
objects. In JavaScript, you cannot call a function multiple times to collect their returned variables.
It is illegal, the only way is to use an array to store the function returned variables.
Or you can use Array.prototype.map
which is available since JavaScript ES5 to handle this situation.
Maybe we can write other compiler to recreate a new JSX syntax to implement a repeat function just like Angular's ng-repeat
.
Consider the tricks that <a href> knows by default but javascript linking won't do for you. On a decent website, anything that wants to behave as a link should implement these features one way or another. Namely:
Now if you don't want to simulate all that behaviour, I suggest to use <a href> and style it like a button, since the button itself is roughly a shape and a hover effect. I think if it's not semantically important to only have "the button and nothing else", <a href> is the way of the samurai. And if you worry about semantics and readability, you can also replace the button element when your document is ready(). It's clear and safe.
The most easy way as I saw:
Foreach ($Site in get-website) { Foreach ($Bind in $Site.bindings.collection) {[pscustomobject]@{name=$Site.name;Protocol=$Bind.Protocol;Bindings=$Bind.BindingInformation}}}
On Jupyter Notebooks on Anaconda, doing this:
%load_ext autoreload
%autoreload 2
produced the message:
The autoreload extension is already loaded. To reload it, use:
%reload_ext autoreload
It looks like it's preferable to do:
%reload_ext autoreload
%autoreload 2
Version information:
The version of the notebook server is 5.0.0 and is running on: Python 3.6.2 |Anaconda, Inc.| (default, Sep 20 2017, 13:35:58) [MSC v.1900 32 bit (Intel)]
You can simply download the library which you want to include and copy it to libs folder of your project. Then select that file (in my case it was android-support-v4 library) right click on it and select "Add as Library"
Just write docker ps
and get the container id and then write the following;
docker exec -i your_container_id mysql -u root -p123456 your_db_name < /Users/your_pc/your_project_folder/backup.sql
I had a similar experience.
The error was triggered when I initialize a variable on the driver (master), but then tried to use it on one of the workers. When that happens, Spark Streaming will try to serialize the object to send it over to the worker, and fail if the object is not serializable.
I solved the error by making the variable static.
Previous non-working code
private final PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();
Working code
private static final PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();
Credits:
Running as admin didn't help me. (also got errors with syscall: rename)
Turns out this error can also occur if files are locked by Windows.
This can occur if :
Running as admin doesn't get around windows file locking.
I created a new project in VS2017 and then switched to VSCode to try to add more packages. After stopping the project from running and closing VS2017 it was able to complete without error
Disclaimer: I'm not exactly sure if this means running as admin isn't necessary, but try to avoid it if possible to avoid the possibility of some rogue package doing stuff it isn't meant to.
A minor improvement, but after the main loop, you could use System.arraycopy
to copy the tail of either input array when you get to the end of the other. That won't change the O(n)
performance characteristics of your solution, though.
var Rect = (function(){
'use strict';
return {
instance: function(spec){
'use strict';
spec = spec || {};
/* Private attributes and methods */
var x = (spec.x === undefined) ? 0 : spec.x,
y = (spec.x === undefined) ? 0 : spec.x,
width = (spec.width === undefined) ? 1 : spec.width,
height = (spec.height === undefined) ? 1 : spec.height;
/* Public attributes and methods */
var that = { isSolid: (spec.solid === undefined) ? false : spec.solid };
that.getX = function(){ return x; };
that.setX = function(value) { x = value; };
that.getY = function(){ return y; };
that.setY = function(value) { y = value; };
that.getWidth = function(){ return width; };
that.setWidth = function(value) { width = value; };
that.getHeight = function(){ return height; };
that.setHeight = function(value) { height = value; };
return that;
},
copy: function(obj){
return Rect.instance({ x: obj.getX(), y: obj.getY(), width: obj.getWidth, height: obj.getHeight(), solid: obj.isSolid });
}
}
})();
A good way is to use JavaScript native api URL
object. This provides many usefull url parts.
For example:
const url = 'https://stackoverflow.com/questions/1420881/how-to-extract-base-url-from-a-string-in-javascript'
const urlObject = new URL(url);
console.log(urlObject);
// RESULT:
//________________________________
hash: "",
host: "stackoverflow.com",
hostname: "stackoverflow.com",
href: "https://stackoverflow.com/questions/1420881/how-to-extract-base-url-from-a-string-in-javascript",
origin: "https://stackoverflow.com",
password: "",
pathname: "/questions/1420881/how-to-extract-base-url-from-a-string-in-javaript",
port: "",
protocol: "https:",
search: "",
searchParams: [object URLSearchParams]
... + some other methods
As you can see here you can just access whatever you need.
For example: console.log(urlObject.host); // "stackoverflow.com"
doc for URL
From my experience with tutorials, and other things number 2 always seems preferred, but it's a personal preference choice more than anything else.
TL;DR
If you can use iotop
, do so. Else this might help.
Use top
, then use these shortcuts:
d 1 = set refresh time from 3 to 1 second
1 = show stats for each cpu, not cumulated
This has to show values > 1.0 wa
for at least one core - if there are no diskwaits, there is simply no IO load and no need to look further. Significant loads usually start > 15.0 wa
.
x = highlight current sort column
< and > = change sort column
R = reverse sort order
Chose 'S', the process status column. Reverse the sort order so the 'R' (running) processes are shown on top. If you can spot 'D' processes (waiting for disk), you have an indicator what your culprit might be.
Here is your exact answer...
const char LineFeed = '\n'; // #10
string temp = new System.Text.RegularExpressions.Regex(
LineFeed
).Replace(mystring, string.Empty);
But this one is much better... Specially if you are trying to split the lines (you may also use it with Split)
const char CarriageReturn = '\r'; // #13
const char LineFeed = '\n'; // #10
string temp = new System.Text.RegularExpressions.Regex(
string.Format("{0}?{1}", CarriageReturn, LineFeed)
).Replace(mystring, string.Empty);
How about .delay()
?
$("#test").animate({"top":"-=80px"},1500)
.delay(1000)
.animate({"opacity":"0"},500);
If you need only display the trimmed value then I'd suggest against manipulating the original string and using a filter instead.
app.filter('trim', function () {
return function(value) {
if(!angular.isString(value)) {
return value;
}
return value.replace(/^\s+|\s+$/g, ''); // you could use .trim, but it's not going to work in IE<9
};
});
And then
<span>{{ foo | trim }}</span>
Another variation:
if (!Array.prototype.removeArr) {
Array.prototype.removeArr = function(arr) {
if(!Array.isArray(arr)) arr=[arr];//let's be nice to people who put a non-array value here.. that could be me!
var that = this;
if(arr.length){
var i=0;
while(i<that.length){
if(arr.indexOf(that[i])>-1){
that.splice(i,1);
}else i++;
}
}
return that;
}
}
It's indexOf() inside a loop again, but on the assumption that the array to remove is small relative to the array to be cleaned; every removal shortens the while loop.
Here's a method if you want to do it for just one specific file:
RewriteRule ^about$ about.php [L]
Ref: http://css-tricks.com/snippets/htaccess/remove-file-extention-from-urls/
What about this:
var txt="";
var nyc = {
fullName: "New York City",
mayor: "Michael Bloomberg",
population: 8000000,
boroughs: 5
};
for (var x in nyc){
txt += nyc[x];
}
Use GetParent()
as shown, works nicely. Add error checking as you need.
var fn = openFileDialogSapTable.FileName;
var currentPath = Path.GetFullPath( fn );
currentPath = Directory.GetParent(currentPath).FullName;
Here is a better way for doing it. Hope this helps
protected void onPostExecute(String result) {
Log.v(TAG + " result);
if (!result.equals("")) {
// Set up variables for API Call
ArrayList<String> list = new ArrayList<String>();
try {
JSONArray jsonArray = new JSONArray(result);
for (int i = 0; i < jsonArray.length(); i++) {
list.add(jsonArray.get(i).toString());
}//end for
} catch (JSONException e) {
Log.e(TAG, "onPostExecute > Try > JSONException => " + e);
e.printStackTrace();
}
adapter = new ArrayAdapter<String>(ListViewData.this, android.R.layout.simple_list_item_1, android.R.id.text1, list);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// ListView Clicked item index
int itemPosition = position;
// ListView Clicked item value
String itemValue = (String) listView.getItemAtPosition(position);
// Show Alert
Toast.makeText( ListViewData.this, "Position :" + itemPosition + " ListItem : " + itemValue, Toast.LENGTH_LONG).show();
}
});
adapter.notifyDataSetChanged();
...
Something like this?
>>> st = "hello world"
>>> ' '.join(format(ord(x), 'b') for x in st)
'1101000 1100101 1101100 1101100 1101111 100000 1110111 1101111 1110010 1101100 1100100'
#using `bytearray`
>>> ' '.join(format(x, 'b') for x in bytearray(st, 'utf-8'))
'1101000 1100101 1101100 1101100 1101111 100000 1110111 1101111 1110010 1101100 1100100'
For my case, I can use like this.
td { white-space:pre-line , word-break: break-all}
Try this:
$.datepicker.parseDate("yy-mm-dd", minValue);
Simply use this function and pass the count of number you want to generate
Code:
function randomFix($length)
{
$random= "";
srand((double)microtime()*1000000);
$data = "AbcDE123IJKLMN67QRSTUVWXYZ";
$data .= "aBCdefghijklmn123opq45rs67tuv89wxyz";
$data .= "0FGH45OP89";
for($i = 0; $i < $length; $i++)
{
$random .= substr($data, (rand()%(strlen($data))), 1);
}
return $random;}
It's this easy:
update my_table
set path = replace(path, 'oldstring', 'newstring')
The problem is that your ui
property uses a forward declaration of class Ui::MainWindowClass
, hence the "incomplete type" error.
Including the header file in which this class is declared will fix the problem.
EDIT
Based on your comment, the following code:
namespace Ui
{
class MainWindowClass;
}
does NOT declare a class. It's a forward declaration, meaning that the class will exist at some point, at link time.
Basically, it just tells the compiler that the type will exist, and that it shouldn't warn about it.
But the class has to be defined somewhere.
Note this can only work if you have a pointer to such a type.
You can't have a statically allocated instance of an incomplete type.
So either you actually want an incomplete type, and then you should declare your ui
member as a pointer:
namespace Ui
{
// Forward declaration - Class will have to exist at link time
class MainWindowClass;
}
class MainWindow : public QMainWindow
{
private:
// Member needs to be a pointer, as it's an incomplete type
Ui::MainWindowClass * ui;
};
Or you want a statically allocated instance of Ui::MainWindowClass
, and then it needs to be declared.
You can do it in another header file (usually, there's one header file per class).
But simply changing the code to:
namespace Ui
{
// Real class declaration - May/Should be in a specific header file
class MainWindowClass
{};
}
class MainWindow : public QMainWindow
{
private:
// Member can be statically allocated, as the type is complete
Ui::MainWindowClass ui;
};
will also work.
Note the difference between the two declarations. First uses a forward declaration, while the second one actually declares the class (here with no properties nor methods).
Perhaps I've missed the point (that you need the algorithm and not the ready made solution), but it seems that scala does it out of the box (now):
def combis(str:String, k:Int):Array[String] = {
str.combinations(k).toArray
}
Using the method like this:
println(combis("abcd",2).toList)
Will produce:
List(ab, ac, ad, bc, bd, cd)
instead of doing it like that, why not just make the flyout position:fixed, top:0; left:0;
once your window has scrolled pass a certain height:
jQuery
$(window).scroll(function(){
if ($(this).scrollTop() > 135) {
$('#task_flyout').addClass('fixed');
} else {
$('#task_flyout').removeClass('fixed');
}
});
css
.fixed {position:fixed; top:0; left:0;}
While this isn't answering your question directly, I'm putting this here as google brought this page up first in my searches when I was looking for this info.
If you're using Visual Studio, you can right click on your project -> Properties -> Build -> Advanced This should list available versions as well as the one your proj is using.
The thing is that, when you call a function you should not write the type of the function, that means you should call the funnction just like
initializeJSP(Experiment);
I think that you should use this code :-)
// sample string
const param= "Hi you know anybody like pizaa";
// You can change limit parameter(up to you)
const checkTitle = (str, limit = 17) => {
var newTitle = [];
if (param.length >= limit) {
param.split(" ").reduce((acc, cur) => {
if (acc + cur.length <= limit) {
newTitle.push(cur);
}
return acc + cur.length;
}, 0);
return `${newTitle.join(" ")} ...`;
}
return param;
};
console.log(checkTitle(str));
// result : Hi you know anybody ...
You could use diff
with following output formatting:
diff --old-line-format='' --unchanged-line-format='' file1 file2
--old-line-format=''
, disable output for file1 if line was differ compare in file2.
--unchanged-line-format=''
, disable output if lines were same.
git log -1 --format="%an %ae%n%cn %ce" a2c25061
The Pretty Formats section of the git show
documentation contains
format:<string>
The
format:<string>
format allows you to specify which information you want to show. It works a little bit like printf format, with the notable exception that you get a newline with%n
instead of\n
…The placeholders are:
%an
: author name%ae
: author email%cn
: committer name%ce
: committer email
Setting null values can be done with np.nan
:
import numpy as np
df.replace('-', np.nan)
Advantage is that df.last_valid_index()
recognizes these as invalid.
my problem was just network connection. using VPN solved the issue.
A more rounded approach
import SnapKit
let containerView = UIView()
containerView.backgroundColor = .red
self.view.addSubview(containerView)
containerView.snp.remakeConstraints { (make) -> Void in
make.width.top.equalToSuperView()
make.top.equalTo(self.view.safeArea.top)
make.bottom.equalTo(self.view.safeArea.bottom)
}
extension UIView {
var safeArea: ConstraintBasicAttributesDSL {
if #available(iOS 11.0, *) {
return self.safeAreaLayoutGuide.snp
}
return self.snp
}
var isIphoneX: Bool {
if #available(iOS 11.0, *) {
if topSafeAreaInset > CGFloat(0) {
return true
} else {
return false
}
} else {
return false
}
}
var topSafeAreaInset: CGFloat {
let window = UIApplication.shared.keyWindow
var topPadding: CGFloat = 0
if #available(iOS 11.0, *) {
topPadding = window?.safeAreaInsets.top ?? 0
}
return topPadding
}
var bottomSafeAreaInset: CGFloat {
let window = UIApplication.shared.keyWindow
var bottomPadding: CGFloat = 0
if #available(iOS 11.0, *) {
bottomPadding = window?.safeAreaInsets.bottom ?? 0
}
return bottomPadding
}
}
Make sure you create the project with conda environment option selected.
My problem solved by recreate the project and select "conda" from "New environment using" options
see image:
There are a couple of ways:
To delete it directly:
SomeModel.objects.filter(id=id).delete()
To delete it from an instance:
instance = SomeModel.objects.get(id=id)
instance.delete()
While you can configure Vim's indentation just fine using the indent plugin or manually using the settings, I recommend using a python script called Vindect that automatically sets the relevant settings for you when you open a python file. Use this tip to make using Vindect even more effective. When I first started editing python files created by others with various indentation styles (tab vs space and number of spaces), it was incredibly frustrating. But Vindect along with this indent file
Also recommend:
lista = list.sort(lista)
This should be
lista.sort()
The .sort()
method is in-place, and returns None. If you want something not in-place, which returns a value, you could use
sorted_list = sorted(lista)
Aside #1: please don't call your lists list
. That clobbers the builtin list type.
Aside #2: I'm not sure what this line is meant to do:
print str("value 1a")+str(" + ")+str("value 2")+str(" = ")+str("value 3a ")+str("value 4")+str("\n")
is it simply
print "value 1a + value 2 = value 3a value 4"
? In other words, I don't know why you're calling str on things which are already str.
Aside #3: sometimes you use print("something")
(Python 3 syntax) and sometimes you use print "something"
(Python 2). The latter would give you a SyntaxError in py3, so you must be running 2.*, in which case you probably don't want to get in the habit or you'll wind up printing tuples, with extra parentheses. I admit that it'll work well enough here, because if there's only one element in the parentheses it's not interpreted as a tuple, but it looks strange to the pythonic eye..
The exception TypeError: 'NoneType' object is not subscriptable
happens because the value of lista
is actually None
. You can reproduce TypeError
that you get in your code if you try this at the Python command line:
None[0]
The reason that lista
gets set to None is because the return value of list.sort()
is None
... it does not return a sorted copy of the original list. Instead, as the documentation points out, the list gets sorted in-place instead of a copy being made (this is for efficiency reasons).
If you do not want to alter the original version you can use
other_list = sorted(lista)
Or add this part
<script type="text/javascript">
var mySpan = document.createElement("span");
mySpan.innerHTML = "This is my span!";
mySpan.style.color = "red";
document.body.appendChild(mySpan);
alert("Why does the span change after this alert? Not before?");
</script>
after the HTML, like:
<html>
<head>...</head>
<body>...</body>
<script type="text/javascript">
var mySpan = document.createElement("span");
mySpan.innerHTML = "This is my span!";
mySpan.style.color = "red";
document.body.appendChild(mySpan);
alert("Why does the span change after this alert? Not before?");
</script>
</html>
For New version of Java JavaPath folder is located
64 bit OS
"C:\Program Files \Common Files\Oracle\Java\javapath\"
X86
"C:\Program Files(x86) \Common Files\Oracle\Java\javapath\"
iOS 11 / Xcode 9
<#yourElement#>.waitForExistence(timeout: 5)
This is a great replacement for all the custom implementations on this site!
Be sure to have a look at my answer here: https://stackoverflow.com/a/48937714/971329. There I describe an alternative to waiting for requests which will greatly reduce the time your tests are running!
Tomcat (Headless) can be integrated with IntelliJ Idea - Community edition.
Step-by-step instructions are as below:
Add tomcatX-maven-plugin
to pom.xml
<build>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<path>SampleProject</path>
</configuration>
</plugin>
</plugins>
</build>
Add new run configuration as below:
Run >> Edit Configurations >> + >> Maven
Parameters tab ...
Name :: Tomcat
Working Directory :: Project Root Directory
Command Line :: tomcat7:run
Runner tab ...
VM Options :: <user needed options>
JRE :: <project needed>
Invoke Tomcat in Run/Debug mode directly from IntelliJ Run >> Run/Debug menu
NOTE: Though this is considered a hacking of using using Tomcat integration features of IntelliJ - Enterprise version features, but I would consider this a programmatic way integrating tomcat to the IntelliJ Idea - community edition.
You could replace any view at any time.
int optionId = someExpression ? R.layout.option1 : R.layout.option2;
View C = findViewById(R.id.C);
ViewGroup parent = (ViewGroup) C.getParent();
int index = parent.indexOfChild(C);
parent.removeView(C);
C = getLayoutInflater().inflate(optionId, parent, false);
parent.addView(C, index);
If you don't want to replace already existing View, but choose between option1/option2 at initialization time, then you could do this easier: set android:id
for parent layout and then:
ViewGroup parent = (ViewGroup) findViewById(R.id.parent);
View C = getLayoutInflater().inflate(optionId, parent, false);
parent.addView(C, index);
You will have to set "index" to proper value depending on views structure. You could also use a ViewStub: add your C view as ViewStub and then:
ViewStub C = (ViewStub) findViewById(R.id.C);
C.setLayoutResource(optionId);
C.inflate();
That way you won't have to worry about above "index" value if you will want to restructure your XML layout.
Note that if you are using Java 5 or newer, you should use StringBuilder
instead of StringBuffer
. From the API documentation:
As of release JDK 5, this class has been supplemented with an equivalent class designed for use by a single thread,
StringBuilder
. TheStringBuilder
class should generally be used in preference to this one, as it supports all of the same operations but it is faster, as it performs no synchronization.
In practice, you will almost never use this from multiple threads at the same time, so the synchronization that StringBuffer
does is almost always unnecessary overhead.
Put the table in the second image on Sheet2, columns D to F.
In Sheet1, cell D2 use the formula
=iferror(vlookup($A2,Sheet2!$D$1:$F$100,column(A1),false),"")
copy across and down.
Edit: here is a picture. The data is in two sheets. On Sheet1, enter the formula into cell D2. Then copy the formula across to F2 and then down as many rows as you need.
To copy text from the begining of line to the cursor position: ctrl + insert
It does the job and save a lot of time for me.
I wrote a very simple class for exporting to "Excel XML" aka SpreadsheetML. It's not quite as convenient for the end user as XSLX (depending on file extension and Excel version, they may get a warning message), but it's a lot easier to work with than XLS or XLSX.
This is similar to both imran's and ralu's answer. It does not use a generator, but instead employs recursion with a closure:
def flatten_dict(d, separator='_'):
final = {}
def _flatten_dict(obj, parent_keys=[]):
for k, v in obj.iteritems():
if isinstance(v, dict):
_flatten_dict(v, parent_keys + [k])
else:
key = separator.join(parent_keys + [k])
final[key] = v
_flatten_dict(d)
return final
>>> print flatten_dict({'a': 1, 'c': {'a': 2, 'b': {'x': 5, 'y' : 10}}, 'd': [1, 2, 3]})
{'a': 1, 'c_a': 2, 'c_b_x': 5, 'd': [1, 2, 3], 'c_b_y': 10}
HTML:
<div id="my-div" class="hide">Hello, TB3</div>
Javascript:
$(function(){
//If the HIDE class exists then remove it, But first hide DIV
if ( $("#my-div").hasClass( 'hide' ) ) $("#my-div").hide().removeClass('hide');
//Now, you can use any of these functions to display
$("#my-div").show();
//$("#my-div").fadeIn();
//$("#my-div").toggle();
});
I'm having same scenario, this worked for me but i'm not having the "hide/show" feature you have. So perhaps you could first check if you get the focus when you have the field always visible, and then try to solve why does not work when you change visibility (probably that's why you need to apply a sleep or a promise)
To set focus, this is the only change you need to do:
your Html mat input should be:
<input #yourControlName matInput>
in your TS class, reference like this in the variables section (
export class blabla...
@ViewChild("yourControlName") yourControl : ElementRef;
Your button it's fine, calling:
showSearch(){
///blabla... then finally:
this.yourControl.nativeElement.focus();
}
and that's it. You can check this solution on this post that I found, so thanks to --> https://codeburst.io/focusing-on-form-elements-the-angular-way-e9a78725c04f
I just wanted to share my experience
For me,
$('#selectorId').val()
returned null.
I had to use
$('#selectorId option:selected').val()
To understand it in a easier way, following are the diffrences between JSON object and JSON array:
Link to Tabular Difference : https://i.stack.imgur.com/GIqI9.png
JSON Array
1. Arrays in JSON are used to organize a collection of related items
(Which could be JSON objects)
2. Array values must be of type string, number, object, array, boolean or null
3. Syntax:
[ "Ford", "BMW", "Fiat" ]
4. JSON arrays are surrounded by square brackets [].
**Tip to remember** : Here, order of element is important. That means you have
to go straight like the shape of the bracket i.e. straight lines.
(Note :It is just my logic to remember the shape of both.)
5. Order of elements is important. Example: ["Ford","BMW","Fiat"] is not
equal to ["Fiat","BMW","Ford"]
6. JSON can store nested Arrays that are passed as a value.
JSON Object
1. JSON objects are written in key/value pairs.
2. Keys must be strings, and values must be a valid JSON data type (string, number,
object, array, boolean or null).Keys and values are separated by a colon.
Each key/value pair is separated by a comma.
3. Syntax:
{ "name":"Somya", "age":25, "car":null }
4. JSON objects are surrounded by curly braces {}
Tip to remember : Here, order of element is not important. That means you can go
the way you like. Therefore the shape of the braces i.e. wavy.
(Note : It is just my logic to remember the shape of both.)
5. Order of elements is not important.
Example: { rollno: 1, firstname: 'Somya'}
is equal to
{ firstname: 'Somya', rollno: 1}
6. JSON can store nested objects in JSON format in addition to nested arrays.
Context java 8
I give my answer here in the context of Oracle java 8 implementation, since after reading all the answers, I found that an answer in the context of java 6 has given by gmgmiller, and another answer has been given in the context of java 7. But how java 8 implementes the size increasement has not been given.
In java 8, the size increasement behavior is the same as java 6, see the grow
method of ArrayList:
private void grow(int minCapacity) {
// overflow-conscious code
int oldCapacity = elementData.length;
int newCapacity = oldCapacity + (oldCapacity >> 1);
if (newCapacity - minCapacity < 0)
newCapacity = minCapacity;
if (newCapacity - MAX_ARRAY_SIZE > 0)
newCapacity = hugeCapacity(minCapacity);
// minCapacity is usually close to size, so this is a win:
elementData = Arrays.copyOf(elementData, newCapacity);
}
the key code is this line:
int newCapacity = oldCapacity + (oldCapacity >> 1);
So clearly, the growth factor is also 1.5, the same as java 6.
array_key_exists() is SLOW compared to isset(). A combination of these two (see below code) would help.
It takes the performance advantage of isset() while maintaining the correct checking result (i.e. return TRUE even when the array element is NULL)
if (isset($a['element']) || array_key_exists('element', $a)) {
//the element exists in the array. write your code here.
}
The benchmarking comparison: (extracted from below blog posts).
array_key_exists() only : 205 ms
isset() only : 35ms
isset() || array_key_exists() : 48ms
See http://thinkofdev.com/php-fast-way-to-determine-a-key-elements-existance-in-an-array/ and http://thinkofdev.com/php-isset-and-multi-dimentional-array/
for detailed discussion.
As a bonus, I'd like to offer kind of a different solution to your issue. You seem to be dealing with nested dictionaries, which is usually tedious, especially when you have to check for existence of an inner key.
There are some interesting libraries regarding this on pypi, here is a quick search for you.
In your specific case, dict_digger seems suited.
>>> import dict_digger
>>> d = {
'Apple': {'American':'16', 'Mexican':10, 'Chinese':5},
'Grapes':{'Arabian':'25','Indian':'20'}
}
>>> print(dict_digger.dig(d, 'Apple','American'))
16
>>> print(dict_digger.dig(d, 'Grapes','American'))
None
If you are using Google Play App Signing, you don't need to add your SHA-1 keys manually, just login into Firebase go into "project settings"->"integration" and press a button to link Google Play with firebase, SHA-1 will be added automatically.
The problem here is your user doesn't have proper rights/permissions to open the file this means that you'd need to grant some administrative privileges to your python ide before you run that command.
As you are a windows user you just need to right click on python ide => select option 'Run as Administrator' and then run your command.
And if you are using the command line to run the codes, do the same open the command prompt with admin rights. Hope it helps
You can just use the normal setTimeout method in JavaScript.
ie...
setTimeout( function(){
// Do something after 1 second
} , 1000 );
In your example, you might want to use showStickySuccessToast
directly.
just use rollback
Example code
try:
cur.execute("CREATE TABLE IF NOT EXISTS test2 (id serial, qa text);")
except:
cur.execute("rollback")
cur.execute("CREATE TABLE IF NOT EXISTS test2 (id serial, qa text);")
mcilist = (from mci in mcilist select mci).Distinct().ToList();
ArrayList
is the collections of different types data whereas List<>
is the collection of similar type of its own depedencties.
After looking in-depth, it's straight forward.
AsyncTask
:
It's a simple way to use a thread without knowing anything about the java thread model.
AsyncTask
gives various callbacks respective to the worker thread and main thread.
Use for small waiting operations like the following:
Handler
:
When we install an application in android, then it creates a thread for that application called MAIN UI Thread. All activities run inside that thread. By the android single thread model rule, we can not access UI elements (bitmap, textview, etc..) directly for another thread defined inside that activity.
A Handler allows you to communicate back with the UI thread from other background threads. This is useful in android as android doesn’t allow other threads to communicate directly with UI thread. A handler can send and process Message and Runnable objects associated with a thread’s MessageQueue. Each Handler instance is associated with a single thread and that thread’s message queue. When a new Handler is created, it is bound to the thread/message queue of the thread that is creating it.
It's the best fit for:
Thread
:
Now it's time to talk about the thread.
Thread is the parent of both AsyncTask
and Handler
. They both internally use thread, which means you can also create your own thread model like AsyncTask
and Handler
, but that requires a good knowledge of Java's Multi-Threading Implementation.
Just to throw in another example. Imagine you have the following list:
nums = [4,2,2,1,3]
and you want to turn it into a dict where the key is the index and value is the element in the list. You can do so with the following line of code:
{index:nums[index] for index in range(0,len(nums))}
You can write different sheets as follows
$objPHPExcel = new PHPExcel();
$objPHPExcel->getProperties()->setCreator("creater");
$objPHPExcel->getProperties()->setLastModifiedBy("Middle field");
$objPHPExcel->getProperties()->setSubject("Subject");
$objWorkSheet = $objPHPExcel->createSheet();
$work_sheet_count=3;//number of sheets you want to create
$work_sheet=0;
while($work_sheet<=$work_sheet_count){
if($work_sheet==0){
$objWorkSheet->setTitle("Worksheet$work_sheet");
$objPHPExcel->setActiveSheetIndex($work_sheet)->setCellValue('A1', 'SR No. In sheet 1')->getStyle('A1')->getFont()->setBold(true);
$objPHPExcel->setActiveSheetIndex($work_sheet)->setCellValueByColumnAndRow($col++, $row++, $i++);//setting value by column and row indexes if needed
}
if($work_sheet==1){
$objWorkSheet->setTitle("Worksheet$work_sheet");
$objPHPExcel->setActiveSheetIndex($work_sheet)->setCellValue('A1', 'SR No. In sheet 2')->getStyle('A1')->getFont()->setBold(true);
$objPHPExcel->setActiveSheetIndex($work_sheet)->setCellValueByColumnAndRow($col++, $row++, $i++);//setting value by column and row indexes if needed
}
if($work_sheet==2){
$objWorkSheet = $objPHPExcel->createSheet($work_sheet_count);
$objWorkSheet->setTitle("Worksheet$work_sheet");
$objPHPExcel->setActiveSheetIndex($work_sheet)->setCellValue('A1', 'SR No. In sheet 3')->getStyle('A1')->getFont()->setBold(true);
$objPHPExcel->setActiveSheetIndex($work_sheet)->setCellValueByColumnAndRow($col++, $row++, $i++);//setting value by column and row indexes if needed
}
$work_sheet++;
}
$filename='file-name'.'.xls'; //save our workbook as this file name
header('Content-Type: application/vnd.ms-excel'); //mime type
header('Content-Disposition: attachment;filename="'.$filename.'"'); //tell browser what's the file name
header('Cache-Control: max-age=0'); //no cach
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
You could try two things:
Make your hashCode
method return something simpler and more effective such as a consecutive int
Initialize your map as:
Map map = new HashMap( 30000000, .95f );
Those two actions will reduce tremendously the amount of rehashing the structure is doing, and are pretty easy to test I think.
If that doesn't work, consider using a different storage such a RDBMS.
EDIT
Is strange that setting the initial capacity reduce the performance in your case.
See from the javadocs:
If the initial capacity is greater than the maximum number of entries divided by the load factor, no rehash operations will ever occur.
I made a microbeachmark ( which is not by anymeans definitive but at least proves this point )
$cat Huge*java
import java.util.*;
public class Huge {
public static void main( String [] args ) {
Map map = new HashMap( 30000000 , 0.95f );
for( int i = 0 ; i < 26000000 ; i ++ ) {
map.put( i, i );
}
}
}
import java.util.*;
public class Huge2 {
public static void main( String [] args ) {
Map map = new HashMap();
for( int i = 0 ; i < 26000000 ; i ++ ) {
map.put( i, i );
}
}
}
$time java -Xms2g -Xmx2g Huge
real 0m16.207s
user 0m14.761s
sys 0m1.377s
$time java -Xms2g -Xmx2g Huge2
real 0m21.781s
user 0m20.045s
sys 0m1.656s
$
So, using the initial capacity drops from 21s to 16s because of the rehasing. That leave us with your hashCode
method as an "area of opportunity" ;)
EDIT
As per your last edition.
I think you should really profile your application and see where it the memory/cpu is being consumed.
I have created a class implementing your same hashCode
That hash code give millions of collisions, then the entries in the HashMap is reduced dramatically.
I pass from 21s, 16s in my previous test to 10s and 8s. The reason is because the hashCode provokes a high number of collisions and you are not storing the 26M objects you think but a much significant lower number ( about 20k I would say ) So:
The problems IS NOT THE HASHMAP is somewhere else in your code.
It is about time to get a profiler and find out where. I would think it is on the creation of the item or probably you're writing to disk or receiving data from the network.
Here's my implementation of your class.
note I didn't use a 0-51 range as you did but -126 to 127 for my values and admits repeated, that's because I did this test before you updated your question
The only difference is that your class will have more collisions thus less items stored in the map.
import java.util.*;
public class Item {
private static byte w = Byte.MIN_VALUE;
private static byte x = Byte.MIN_VALUE;
private static byte y = Byte.MIN_VALUE;
private static byte z = Byte.MIN_VALUE;
// Just to avoid typing :)
private static final byte M = Byte.MAX_VALUE;
private static final byte m = Byte.MIN_VALUE;
private byte [] a = new byte[2];
private byte [] b = new byte[3];
public Item () {
// make a different value for the bytes
increment();
a[0] = z; a[1] = y;
b[0] = x; b[1] = w; b[2] = z;
}
private static void increment() {
z++;
if( z == M ) {
z = m;
y++;
}
if( y == M ) {
y = m;
x++;
}
if( x == M ) {
x = m;
w++;
}
}
public String toString() {
return "" + this.hashCode();
}
public int hashCode() {
int hash = 503;
hash = hash * 5381 + (a[0] + a[1]);
hash = hash * 5381 + (b[0] + b[1] + b[2]);
return hash;
}
// I don't realy care about this right now.
public boolean equals( Object other ) {
return this.hashCode() == other.hashCode();
}
// print how many collisions do we have in 26M items.
public static void main( String [] args ) {
Set set = new HashSet();
int collisions = 0;
for ( int i = 0 ; i < 26000000 ; i++ ) {
if( ! set.add( new Item() ) ) {
collisions++;
}
}
System.out.println( collisions );
}
}
Using this class has Key for the previous program
map.put( new Item() , i );
gives me:
real 0m11.188s
user 0m10.784s
sys 0m0.261s
real 0m9.348s
user 0m9.071s
sys 0m0.161s
summation
and your other functions are defined after they're used in main
, and so the compiler has made a guess about it's signature; in other words, an implicit declaration has been assumed.
You should declare the function before it's used and get rid of the warning. In the C99 specification, this is an error.
Either move the function bodies before main
, or include method signatures before main
, e.g.:
#include <stdio.h>
int summation(int *, int *, int *);
int main()
{
// ...
for unhashable lists. It is faster as it does not iterate about already checked entries.
def purge_dublicates(X):
unique_X = []
for i, row in enumerate(X):
if row not in X[i + 1:]:
unique_X.append(row)
return unique_X
With nginx you can send both tokens like this (even though it's against the standard):
Authorization: Basic basic-token,Bearer bearer-token
This works as long as the basic token is first - nginx successfully forwards it to the application server.
And then you need to make sure your application can properly extract the Bearer from the above string.
This might help:
git config core.longpaths true
Basic explanation: This answer suggests not to have such setting applied to the global system (to all projects so avoiding --system
or --global
tag) configurations. This command only solves the problem by being specific to the current project.
EDIT:
This is an important answer related to the "permission denied" issue for those whom does not granted to change git settings globally.
try adding
position:relative
to your body styles. Whenever positioning anything absolutely, you need one of the parent containers to be positioned relative as this will make the item be positioned absolute to the parent container that is relative.
As you had no relative elements, the css will not know what the div is absolutely position to and therefore will not know what to take 100% height of
background-size: contain;
suits me
You can use super.dispose() method which is more similar to close operation.
Just to add on Jacek's perfect solution. If you're trying to do this in Kotlin, it wont work immediately. Instead, you'll want to use this:
@Throws(IOException::class)
fun getSplashVideo(context: Context): File {
val cacheFile = File(context.cacheDir, "splash_video")
try {
val inputStream = context.assets.open("splash_video")
val outputStream = FileOutputStream(cacheFile)
try {
inputStream.copyTo(outputStream)
} finally {
inputStream.close()
outputStream.close()
}
} catch (e: IOException) {
throw IOException("Could not open splash_video", e)
}
return cacheFile
}
Every class or interface can be used as a type in TypeScript.
const date = new Date();
will already know about the date
type definition as Date
is an internal TypeScript object referenced by the DateConstructor interface.
And for the constructor you used, it is defined as:
interface DateConstructor {
new(): Date;
...
}
To make it more explicit, you can use:
const date: Date = new Date();
You might be missing the type definitions though, the Date
is coming for my example from the ES6 lib, and in my tsconfig.json
I have defined:
"compilerOptions": {
"target": "ES6",
"lib": [
"es6",
"dom"
],
You might adapt these settings to target your wanted version of JavaScript.
The Date is by the way an Interface from lib.es6.d.ts
:
/** Enables basic storage and retrieval of dates and times. */
interface Date {
/** Returns a string representation of a date. The format of the string depends on the locale. */
toString(): string;
/** Returns a date as a string value. */
toDateString(): string;
/** Returns a time as a string value. */
toTimeString(): string;
/** Returns a value as a string value appropriate to the host environment's current locale. */
toLocaleString(): string;
/** Returns a date as a string value appropriate to the host environment's current locale. */
toLocaleDateString(): string;
/** Returns a time as a string value appropriate to the host environment's current locale. */
toLocaleTimeString(): string;
/** Returns the stored time value in milliseconds since midnight, January 1, 1970 UTC. */
valueOf(): number;
/** Gets the time value in milliseconds. */
getTime(): number;
/** Gets the year, using local time. */
getFullYear(): number;
/** Gets the year using Universal Coordinated Time (UTC). */
getUTCFullYear(): number;
/** Gets the month, using local time. */
getMonth(): number;
/** Gets the month of a Date object using Universal Coordinated Time (UTC). */
getUTCMonth(): number;
/** Gets the day-of-the-month, using local time. */
getDate(): number;
/** Gets the day-of-the-month, using Universal Coordinated Time (UTC). */
getUTCDate(): number;
/** Gets the day of the week, using local time. */
getDay(): number;
/** Gets the day of the week using Universal Coordinated Time (UTC). */
getUTCDay(): number;
/** Gets the hours in a date, using local time. */
getHours(): number;
/** Gets the hours value in a Date object using Universal Coordinated Time (UTC). */
getUTCHours(): number;
/** Gets the minutes of a Date object, using local time. */
getMinutes(): number;
/** Gets the minutes of a Date object using Universal Coordinated Time (UTC). */
getUTCMinutes(): number;
/** Gets the seconds of a Date object, using local time. */
getSeconds(): number;
/** Gets the seconds of a Date object using Universal Coordinated Time (UTC). */
getUTCSeconds(): number;
/** Gets the milliseconds of a Date, using local time. */
getMilliseconds(): number;
/** Gets the milliseconds of a Date object using Universal Coordinated Time (UTC). */
getUTCMilliseconds(): number;
/** Gets the difference in minutes between the time on the local computer and Universal Coordinated Time (UTC). */
getTimezoneOffset(): number;
/**
* Sets the date and time value in the Date object.
* @param time A numeric value representing the number of elapsed milliseconds since midnight, January 1, 1970 GMT.
*/
setTime(time: number): number;
/**
* Sets the milliseconds value in the Date object using local time.
* @param ms A numeric value equal to the millisecond value.
*/
setMilliseconds(ms: number): number;
/**
* Sets the milliseconds value in the Date object using Universal Coordinated Time (UTC).
* @param ms A numeric value equal to the millisecond value.
*/
setUTCMilliseconds(ms: number): number;
/**
* Sets the seconds value in the Date object using local time.
* @param sec A numeric value equal to the seconds value.
* @param ms A numeric value equal to the milliseconds value.
*/
setSeconds(sec: number, ms?: number): number;
/**
* Sets the seconds value in the Date object using Universal Coordinated Time (UTC).
* @param sec A numeric value equal to the seconds value.
* @param ms A numeric value equal to the milliseconds value.
*/
setUTCSeconds(sec: number, ms?: number): number;
/**
* Sets the minutes value in the Date object using local time.
* @param min A numeric value equal to the minutes value.
* @param sec A numeric value equal to the seconds value.
* @param ms A numeric value equal to the milliseconds value.
*/
setMinutes(min: number, sec?: number, ms?: number): number;
/**
* Sets the minutes value in the Date object using Universal Coordinated Time (UTC).
* @param min A numeric value equal to the minutes value.
* @param sec A numeric value equal to the seconds value.
* @param ms A numeric value equal to the milliseconds value.
*/
setUTCMinutes(min: number, sec?: number, ms?: number): number;
/**
* Sets the hour value in the Date object using local time.
* @param hours A numeric value equal to the hours value.
* @param min A numeric value equal to the minutes value.
* @param sec A numeric value equal to the seconds value.
* @param ms A numeric value equal to the milliseconds value.
*/
setHours(hours: number, min?: number, sec?: number, ms?: number): number;
/**
* Sets the hours value in the Date object using Universal Coordinated Time (UTC).
* @param hours A numeric value equal to the hours value.
* @param min A numeric value equal to the minutes value.
* @param sec A numeric value equal to the seconds value.
* @param ms A numeric value equal to the milliseconds value.
*/
setUTCHours(hours: number, min?: number, sec?: number, ms?: number): number;
/**
* Sets the numeric day-of-the-month value of the Date object using local time.
* @param date A numeric value equal to the day of the month.
*/
setDate(date: number): number;
/**
* Sets the numeric day of the month in the Date object using Universal Coordinated Time (UTC).
* @param date A numeric value equal to the day of the month.
*/
setUTCDate(date: number): number;
/**
* Sets the month value in the Date object using local time.
* @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively.
* @param date A numeric value representing the day of the month. If this value is not supplied, the value from a call to the getDate method is used.
*/
setMonth(month: number, date?: number): number;
/**
* Sets the month value in the Date object using Universal Coordinated Time (UTC).
* @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively.
* @param date A numeric value representing the day of the month. If it is not supplied, the value from a call to the getUTCDate method is used.
*/
setUTCMonth(month: number, date?: number): number;
/**
* Sets the year of the Date object using local time.
* @param year A numeric value for the year.
* @param month A zero-based numeric value for the month (0 for January, 11 for December). Must be specified if numDate is specified.
* @param date A numeric value equal for the day of the month.
*/
setFullYear(year: number, month?: number, date?: number): number;
/**
* Sets the year value in the Date object using Universal Coordinated Time (UTC).
* @param year A numeric value equal to the year.
* @param month A numeric value equal to the month. The value for January is 0, and other month values follow consecutively. Must be supplied if numDate is supplied.
* @param date A numeric value equal to the day of the month.
*/
setUTCFullYear(year: number, month?: number, date?: number): number;
/** Returns a date converted to a string using Universal Coordinated Time (UTC). */
toUTCString(): string;
/** Returns a date as a string value in ISO format. */
toISOString(): string;
/** Used by the JSON.stringify method to enable the transformation of an object's data for JavaScript Object Notation (JSON) serialization. */
toJSON(key?: any): string;
}
The receiver must set port of receiver to match port set in sender DatagramPacket. For debugging try listening on port > 1024 (e.g. 8000 or 9000). Ports < 1024 are typically used by system services and need admin access to bind on such a port.
If the receiver sends packet to the hard-coded port it's listening to (e.g. port 57) and the sender is on the same machine then you would create a loopback to the receiver itself. Always use the port specified from the packet and in case of production software would need a check in any case to prevent such a case.
Another reason a packet won't get to destination is the wrong IP address specified in the sender. UDP unlike TCP will attempt to send out a packet even if the address is unreachable and the sender will not receive an error indication. You can check this by printing the address in the receiver as a precaution for debugging.
In the sender you set:
byte [] IP= { (byte)192, (byte)168, 1, 106 };
InetAddress address = InetAddress.getByAddress(IP);
but might be simpler to use the address in string form:
InetAddress address = InetAddress.getByName("192.168.1.106");
In other words, you set target as 192.168.1.106. If this is not the receiver then you won't get the packet.
Here's a simple UDP Receiver that works :
import java.io.IOException;
import java.net.*;
public class Receiver {
public static void main(String[] args) {
int port = args.length == 0 ? 57 : Integer.parseInt(args[0]);
new Receiver().run(port);
}
public void run(int port) {
try {
DatagramSocket serverSocket = new DatagramSocket(port);
byte[] receiveData = new byte[8];
String sendString = "polo";
byte[] sendData = sendString.getBytes("UTF-8");
System.out.printf("Listening on udp:%s:%d%n",
InetAddress.getLocalHost().getHostAddress(), port);
DatagramPacket receivePacket = new DatagramPacket(receiveData,
receiveData.length);
while(true)
{
serverSocket.receive(receivePacket);
String sentence = new String( receivePacket.getData(), 0,
receivePacket.getLength() );
System.out.println("RECEIVED: " + sentence);
// now send acknowledgement packet back to sender
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,
receivePacket.getAddress(), receivePacket.getPort());
serverSocket.send(sendPacket);
}
} catch (IOException e) {
System.out.println(e);
}
// should close serverSocket in finally block
}
}
Setting CSS width to 1% or 100% of an element according to all specs I could find out is related to the parent. Although Blink Rendering Engine (Chrome) and Gecko (Firefox) at the moment of writing seems to handle that 1% or 100% (make a columns shrink or a column to fill available space) well, it is not guaranteed according to all CSS specifications I could find to render it properly.
One option is to replace table with CSS4 flex divs:
https://css-tricks.com/snippets/css/a-guide-to-flexbox/
That works in new browsers i.e. IE11+ see table at the bottom of the article.
You need to create both a URL
object and a URLConnection
object. The following code will test both the format of the URL and whether a connection can be established:
try {
URL url = new URL("http://www.yoursite.com/");
URLConnection conn = url.openConnection();
conn.connect();
} catch (MalformedURLException e) {
// the URL is not in a valid form
} catch (IOException e) {
// the connection couldn't be established
}
You can't pass str
to your model fit()
method. as it mentioned here
The training input samples. Internally, it will be converted to dtype=np.float32 and if a sparse matrix is provided to a sparse csc_matrix.
Try transforming your data to float and give a try to LabelEncoder.
Write below code into your MainActivity file after setContentView(R.layout.activity_main);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
And below import statement into your java file.
import android.os.StrictMode;
Since you are working in currency why not simply do this:
Console.Writeline("Earnings this week: {0:c}", answer);
This will format answer as currency, so on my machine (UK) it will come out as:
Earnings this week: £209.00
$('input.myclass[type=checkbox]').each(function () {
var sThisVal = (this.checked ? $(this).val() : ""); });
This is how I did it:
Your items (rows) must have unique ids so you can update them later. Set the tag of every view when the list is getting the view from adapter. (You can also use key tag if the default tag is used somewhere else)
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View view = super.getView(position, convertView, parent);
view.setTag(getItemId(position));
return view;
}
For the update check every element of list, if a view with given id is there it's visible so we perform the update.
private void update(long id)
{
int c = list.getChildCount();
for (int i = 0; i < c; i++)
{
View view = list.getChildAt(i);
if ((Long)view.getTag() == id)
{
// update view
}
}
}
It's actually easier than other methods and better when you dealing with ids not positions! Also you must call update for items which get visible.
The OP is trying to count the number of properties in a JSON object. This could be done with an incremented temp variable in the iterator, but he seems to want to know the count before the iteration begins. A simple function that meets the need is provided at the bottom of this page.
Here's a cut and paste of the code, which worked for me:
function countProperties(obj) {
var prop;
var propCount = 0;
for (prop in obj) {
propCount++;
}
return propCount;
}
This should work well for a JSON object. For other objects, which may derive properties from their prototype chain, you would need to add a hasOwnProperty() test.
If you're using pretty permalinks, get_query_var('page_id')
won't work.
Instead, get the queried object ID from the global :$wp_query
// Since 3.1 - recommended!
$page_object = get_queried_object();
$page_id = get_queried_object_id();
// "Dirty" pre 3.1
global $wp_query;
$page_object = $wp_query->get_queried_object();
$page_id = $wp_query->get_queried_object_id();
In bash, if you don't need decimals in your division, you can do:
>echo $((5+6))
11
>echo $((10/2))
5
>echo $((10/3))
3
I use:
logger = logging.getLogger()
logger.disabled = True
... whatever you want ...
logger.disabled = False
Since it's a long time and people keep suggesting to use Scanner#nextLine()
, there's another chance that Scanner
can take spaces included in input.
A Scanner breaks its input into tokens using a delimiter pattern, which by default matches whitespace.
You can use Scanner#useDelimiter()
to change the delimiter of Scanner
to another pattern such as a line feed
or something else.
Scanner in = new Scanner(System.in);
in.useDelimiter("\n"); // use LF as the delimiter
String question;
System.out.println("Please input question:");
question = in.next();
// TODO do something with your input such as removing spaces...
if (question.equalsIgnoreCase("howdoyoulikeschool?") )
/* it seems strings do not allow for spaces */
System.out.println("CLOSED!!");
else
System.out.println("Que?");
You don't really need to use the @staticmethod
decorator. Just declaring a method (that doesn't expect the self parameter) and call it from the class. The decorator is only there in case you want to be able to call it from an instance as well (which was not what you wanted to do)
Mostly, you just use functions though...
This worked for me! You can convert to datatype you want be it a date or string
to_char(TO_DATE(TO_CHAR(end_date),'MM-DD-YYYY'),'YYYY-MM-DD') AS end_date
If the strings are the same length, then I would go for '%x' % ()
of the built-in xor (^
).
Examples -
>>>a = '290b6e3a'
>>>b = 'd6f491c5'
>>>'%x' % (int(a,16)^int(b,16))
'ffffffff'
>>>c = 'abcd'
>>>d = '12ef'
>>>'%x' % (int(a,16)^int(b,16))
'b922'
If the strings are not the same length, truncate the longer string to the length of the shorter using a slice longer = longer[:len(shorter)]
You can use pseudo element to get the effect you want like I did in that Fiddle.
CSS:
.title a {
display: block;
width: 340px;
height: 338px;
color: black;
position: relative;
}
.title a:after {
background: url(https://lh3.googleusercontent.com/-p1nr1fkWKUo/T0zUp5CLO3I/AAAAAAAAAWg/jDiQ0cUBuKA/s800/red-pattern.png) repeat;
content: "";
opacity: 0;
width: inherit;
height: inherit;
position: absolute;
top: 0;
left: 0;
/* TRANSISITION */
transition: opacity 1s ease-in-out;
-webkit-transition: opacity 1s ease-in-out;
-moz-transition: opacity 1s ease-in-out;
-o-transition: opacity 1s ease-in-out;
}
.title a:hover:after{
opacity: 1;
}
HTML:
<div class="title">
<a href="#">HYPERLINK</a>
</div>
The semantically correct character is the Interpunct, also known as middle dot, as HTML entity
·
Example
Home · Photos · About
You could also use the bullet point character, as HTML entity
•
Example
Home • Photos • About
There is no built-in way (yet) of reversing arbitrary colormaps, but one simple solution is to actually not modify the colorbar but to create an inverting Normalize object:
from matplotlib.colors import Normalize
class InvertedNormalize(Normalize):
def __call__(self, *args, **kwargs):
return 1 - super(InvertedNormalize, self).__call__(*args, **kwargs)
You can then use this with plot_surface
and other Matplotlib plotting functions by doing e.g.
inverted_norm = InvertedNormalize(vmin=10, vmax=100)
ax.plot_surface(..., cmap=<your colormap>, norm=inverted_norm)
This will work with any Matplotlib colormap.
Let me make it simple.
You can use @JoinColumn on either sides irrespective of mapping.
Let's divide this into three cases.
1) Uni-directional mapping from Branch to Company.
2) Bi-direction mapping from Company to Branch.
3) Only Uni-directional mapping from Company to Branch.
So any use-case will fall under this three categories. So let me explain how to use @JoinColumn and mappedBy.
1) Uni-directional mapping from Branch to Company.
Use JoinColumn in Branch table.
2) Bi-direction mapping from Company to Branch.
Use mappedBy in Company table as describe by @Mykhaylo Adamovych's answer.
3)Uni-directional mapping from Company to Branch.
Just use @JoinColumn in Company table.
@Entity
public class Company {
@OneToMany(cascade = CascadeType.ALL , fetch = FetchType.LAZY)
@JoinColumn(name="courseId")
private List<Branch> branches;
...
}
This says that in based on the foreign key "courseId" mapping in branches table, get me list of all branches. NOTE: you can't fetch company from branch in this case, only uni-directional mapping exist from company to branch.
You're probably just getting a stack overflow here. The array is too big to fit in your program's stack address space.
If you allocate the array on the heap you should be fine, assuming your machine has enough memory.
int* array = new int[1000000];
But remember that this will require you to delete[]
the array. A better solution would be to use std::vector<int>
and resize it to 1000000 elements.
Martin Fowler prefers design skills over platform knowledge. On the other hand you can ask a question which will show knowledge of design patterns and .NET platform like this:
You have two options here, 1. Use for
instead for foreach
for iteration.But in your case the collection is IEnumerable and the upper limit of the collection is unknown so foreach will be the best option. so i prefer to use another integer variable to hold the iteration count: here is the code for that:
int i = 0; // for index
foreach (var row in list)
{
bool IsChecked;// assign value to this variable
if (IsChecked)
{
// use i value here
}
i++; // will increment i in each iteration
}
Be careful, you can not modify the preflight. In addition, the browser (at least chrome) removes the "authorization" header ... this results in some problems that may arise according to the route design. For example, a preflight will never enter the passport route sheet since it does not have the header with the token.
In case you are designing a file with an implementation of the options method, you must define in the route file web.php one (or more than one) "trap" route so that the preflght (without header authorization) can resolve the request and Obtain the corresponding CORS headers. Because they can not return in a middleware 200 by default, they must add the headers on the original request.
It depends on the way your page behaves. If you want this to happens asynchronously, you have to use AJAX. Try out "jQuery post()" on Google to find some tuts.
In other case, if this will happen when a user submits a form, you can send the variable in an hidden field or append ?variableName=someValue"
to then end of the URL you are opening. :
http://www.somesite.com/send.php?variableName=someValue
or
http://www.somesite.com/send.php?variableName=someValue&anotherVariable=anotherValue
This way, from PHP you can access this value as:
$phpVariableName = $_POST["variableName"];
for forms using POST method or:
$phpVariableName = $_GET["variableName"];
for forms using GET method or the append to url method I've mentioned above (querystring).
@ikis, firstly as @Devolus said these are not multiple aruements passed to print()
. Indeed all these arguments passed get
concatenated to form a single String. So print()
does not teakes multiple arguements (a. k. a. var-args). Now the concept that remains to discuss is how print()
prints any type of the arguement passed
to it.
To explain this - toString()
is the secret:
System
is a class, with a static field out
, of type PrintStream
. So you're calling the println(Object x)
method of a
PrintStream
.
It is implemented like this:
public void println(Object x) {
String s = String.valueOf(x);
synchronized (this) {
print(s);
newLine();
}
}
As wee see, it's calling the String.valueOf(Object) method. This is implemented as follows:
public static String valueOf(Object obj) {
return (obj == null) ? "null" : obj.toString();
}
And here you see, that toString()
is called.
So whatever is returned from the toString()
method of that class, same gets printed.
And as we know the toString()
is in Object
class and thus inherits a default iplementation from Object.
ex: Remember when we have a class whose toString()
we override and then we pass that ref variable to print
, what do you see printed? - It's what we return from the toString()
.