The other difference is that
template<class T> ...
is allowed, but
template<struct T> ...
is not.
I had the problem due to an extra space in the name of the linked server. "SERVER1, 1234" instead of "SERVER1,1234"
You can put set xact_abort on
before your transaction to make sure sql rolls back automatically in case of error.
Correct answers. OK, now I like git. :-) Here's a simpler recipe.
git log HEAD@{2}
git reset --hard HEAD@{2}
Where "2" is the number of back to where you committed your changes. In my case, interrupted by colleague and boss to help debug some build issue; so, did a reset --hard twice; so, HEAD and HEAD@{1} were over-writes. Whew, would have lost an our of hard work.
Use the string's .replace
method with a regex of \D
, which is a shorthand character class that matches all non-digits:
myString = myString.replace(/\D/g,'');
select * from information_schema.columns
could get you started.
The thing is that AsyncTask.cancel() call only calls the onCancel function in your task. This is where you want to handle the cancel request.
Here is a small task I use to trigger an update method
private class UpdateTask extends AsyncTask<Void, Void, Void> {
private boolean running = true;
@Override
protected void onCancelled() {
running = false;
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
onUpdate();
}
@Override
protected Void doInBackground(Void... params) {
while(running) {
publishProgress();
}
return null;
}
}
I take it you're on Mac. See How can I install PIL on mac os x 10.7.2 Lion
If you use [homebrew][], you can install the PIL with just
brew install pil
. You may then need to add the install directory ($(brew --prefix)/lib/python2.7/site-packages
) to your PYTHONPATH, or add the location of PIL directory itself in a file calledPIL.pth
file in any of your site-packages directories, with the contents:/usr/local/lib/python2.7/site-packages/PIL
(assuming
brew --prefix
is/usr/local
).Alternatively, you can just download/build/install it from source:
# download curl -O -L http://effbot.org/media/downloads/Imaging-1.1.7.tar.gz # extract tar -xzf Imaging-1.1.7.tar.gz cd Imaging-1.1.7 # build and install python setup.py build sudo python setup.py install # or install it for just you without requiring admin permissions: # python setup.py install --user
I ran the above just now (on OSX 10.7.2, with XCode 4.2.1 and System Python 2.7.1) and it built just fine, though there is a possibility that something in my environment is non-default.
[homebrew]: http://mxcl.github.com/homebrew/ "Homebrew"
Also note, if you have explicitly granted:
CONNECT ON DATABASE xxx TO GROUP
,
you will need to revoke this separately from DROP OWNED BY, using:
REVOKE CONNECT ON DATABASE xxx FROM GROUP
This this, it worked for me:
Style:
.pagination {
display: flex;
justify-content: center;
}
.pagination li {
display: block;
}
And blade:
<div class="pagination">
{{ $myCollection->render() }}
</div>
Here's a short, simple generic answer with a nice syntax for a named tuple with default arguments:
import collections
def dnamedtuple(typename, field_names, **defaults):
fields = sorted(field_names.split(), key=lambda x: x in defaults)
T = collections.namedtuple(typename, ' '.join(fields))
T.__new__.__defaults__ = tuple(defaults[field] for field in fields[-len(defaults):])
return T
Usage:
Test = dnamedtuple('Test', 'one two three', two=2)
Test(1, 3) # Test(one=1, three=3, two=2)
Minified:
def dnamedtuple(tp, fs, **df):
fs = sorted(fs.split(), key=df.__contains__)
T = collections.namedtuple(tp, ' '.join(fs))
T.__new__.__defaults__ = tuple(df[i] for i in fs[-len(df):])
return T
If the function is not defined when using that function in html, such as onclick = ‘function () ', it means function is in a callback, in my case is 'DOMContentLoaded'.
You can use the Copy method in the System.IO.File class.
We can check using ps command
# ps -aux | grep ssh
Will show all shh service running and we can find the tunnel service listed
Please try something like:
=IF(LEN(C1)>10,VALUE(LEFT(C1,FIND(" ",C1,8))),IF(ISTEXT(C1),DATE(RIGHT(C1,4),MID(C1,4,2),LEFT(C1,2)),C1))
You seem to have three main possible scenarios:
ColumnA below is formatted General and ColumnB as Date (my default setting). ColumnC also as date but with custom formatting to suit the appearances mentioned in your question.
A clue as to whether or not text format is the left or right alignment of the cells’ contents.
I am suggesting separate treatment for each of the above three main cases, so use =IF to differentiate them.
This is longer than any of the others, so can be distinguished as having a length greater than say 10 characters, with =LEN.
In this case we want all but the last six characters but for added flexibility (for instance, in case the time element included seconds) I have chosen to count from the left rather than from the right. The problem then is that the month names may vary in length, so I have chosen to look for the space that immediately follows the year to indicate the limit for the relevant number of characters.
This with =FIND which looks for a space (" "
) in C1
, starting with the eighth character within C1
counting from the left, on the assumption that for this case days will be expressed as two characters and months as three or more.
Since =LEFT is a string function it returns a string, but this can be converted to a value with=VALUE.
So
=VALUE(LEFT(C1,FIND(" ",C1,8)))
returns 40671
in this example – in Excel’s 1900 date system the date serial number for May 5, 2011.
If the length of C1 is not greater than 10 characters, we still need to distinguish between a text entry or a value entry which I have chosen to do with =ISTEXT and, where the if condition is TRUE (as for C2) apply =DATE which takes three parameters, here provided by:
=RIGHT(C2,4)
Takes the last four characters of C2, hence 2011
in this example.
=MID(C2,4,2)
Starting at the fourth character, takes the next two characters of C2, hence 05
in this example (representing May).
=LEFT(C2,2))
Takes the first two characters of C2, hence 08
in this example (representing the 8th day of the month).
Date is not a text function so does not need to be wrapped in =VALUE.
Taken together
=DATE(RIGHT(C2,4),MID(C2,4,2),LEFT(C2,2))
also returns 40671
in this example, but from different input from Case #1.
Is simple because already a date serial number, so just
=C2
is sufficient.
Put the above together to cover all three cases in a single formula:
=IF(LEN(C1)>10,VALUE(LEFT(C1,FIND(" ",C1,8))),IF(ISTEXT(C1),DATE(RIGHT(C1,4),MID(C1,4,2),LEFT(C1,2)),C1))
as applied in ColumnF (formatted to suit OP) or in General format (to show values are integers) in ColumnH:
Either:
Foo[] array = list.toArray(new Foo[0]);
or:
Foo[] array = new Foo[list.size()];
list.toArray(array); // fill the array
Note that this works only for arrays of reference types. For arrays of primitive types, use the traditional way:
List<Integer> list = ...;
int[] array = new int[list.size()];
for(int i = 0; i < list.size(); i++) array[i] = list.get(i);
It is recommended now to use list.toArray(new Foo[0]);
, not list.toArray(new Foo[list.size()]);
.
From JetBrains Intellij Idea inspection:
There are two styles to convert a collection to an array: either using a pre-sized array (like c.toArray(new String[c.size()])) or using an empty array (like c.toArray(new String[0]).
In older Java versions using pre-sized array was recommended, as the reflection call which is necessary to create an array of proper size was quite slow. However since late updates of OpenJDK 6 this call was intrinsified, making the performance of the empty array version the same and sometimes even better, compared to the pre-sized version. Also passing pre-sized array is dangerous for a concurrent or synchronized collection as a data race is possible between the size and toArray call which may result in extra nulls at the end of the array, if the collection was concurrently shrunk during the operation.
This inspection allows to follow the uniform style: either using an empty array (which is recommended in modern Java) or using a pre-sized array (which might be faster in older Java versions or non-HotSpot based JVMs).
I had faced a similar issue and this is what worked for me:
const flavorExists = await Flavors.findOne({
'flavor.name': { $regex: flavorName, $options: 'i' },
});
You forgot the table
in your syntax:
drop table [table_name]
which drops a table.
Using
drop table if exists [table_name]
checks if the table exists before dropping it.
If it exists, it gets dropped.
If not, no error will be thrown and no action be taken.
sudo /usr/local/mysql/support-files/mysql.server stop
extension String {
var underLined: NSAttributedString {
NSMutableAttributedString(string: self, attributes: [.underlineStyle: NSUnderlineStyle.single.rawValue])
}
}
On buttons:
button.setAttributedTitle(yourButtonTitle.underLined, for: .normal)
On Labels:
label.attributedText = yourLabelTitle.underLined
You can use the one that comes with IntelliJ: <intellij>/jre64/lib/ext/jfxrt.jar
.
One tiny addition to JB Jansen's answer - in the main readdir()
loop I'd add this:
if (dir->d_type == DT_REG)
{
printf("%s\n", dir->d_name);
}
Just checking if it's really file, not (sym)link, directory, or whatever.
NOTE: more about struct dirent
in libc
documentation.
This happens every time you insert/ update and you don't use single quotes. When the variable is empty it will result in that error. Fix it by using ''
Assuming the first parameter is an empty variable here is a simple example:
Wrong
nvl( ,0)
Fix
nvl('' ,0)
Put your query into your database software and check it for that error. Generally this is an easy fix
I found the existing answers confusing, and took a long time to work out where the problem is. Here's a compilation of everything I found.
When I run my app, I get an error Failed to execute script foo
(if foo.py
is the main file). To troubleshoot this, don't run PyInstaller with --noconsole
(or edit main.spec
to change console=False
=> console=True
). With this, run the executable from a command-line, and you'll see the failure.
The first thing to check is that it's packaging up your extra files correctly. You should add tuples like ('x', 'x')
if you want the folder x
to be included.
After it crashes, don't click OK. If you're on Windows, you can use Search Everything. Look for one of your files (eg. sword.png
). You should find the temporary path where it unpacked the files (eg. C:\Users\ashes999\AppData\Local\Temp\_MEI157682\images\sword.png
). You can browse this directory and make sure it included everything. If you can't find it this way, look for something like main.exe.manifest
(Windows) or python35.dll
(if you're using Python 3.5).
If the installer includes everything, the next likely problem is file I/O: your Python code is looking in the executable's directory, instead of the temp directory, for files.
To fix that, any of the answers on this question work. Personally, I found a mixture of them all to work: change directory conditionally first thing in your main entry-point file, and everything else works as-is:
if hasattr(sys, '_MEIPASS'):
os.chdir(sys._MEIPASS)
I also experience those misterious error-symbols on packages from time to time. A way to get rid of them that works for me is to effectively remove the JRE System Library from Java Build Path and add it back again.
None of the posted solutions worked for me.
I had to vi
into my Makefile and edit the path so that the path to the include
folder and the OS subsystem (in my case, -I/usr/lib/jvm/java-8-openjdk-amd64/include/linux
) was correct. This allowed me to run make
and make install
without issues.
Using the jQuery Ajax request method you can post the email data to a script (submit.php). Using the success
callback option to animate elements after the script is executed.
note - I would suggest utilizing the ajax Response Object to make sure the script executed successfully.
$(function() {
$('.submit').click(function() {
$.ajax({
type: 'POST',
url: 'submit.php',
data: 'password=p4ssw0rt',
error: function()
{
alert("Request Failed");
},
success: function(response)
{
//EXECUTE ANIMATION HERE
} // this was missing
});
return false;
});
})
in the database the date looks like this 2011-10-2
Store it in YYYY-MM-DD and then string comparison will work because '1' > '0', etc.
Immediately shuts down Jenkins server.
In Windows CMD.exe
, Go to folder where jenkins-cli.jar
file is located.
C:\Program Files (x86)\Jenkins\war\WEB-INF
Use Command to Safely Shutdown
java -jar jenkins-cli.jar -s http://localhost:8080 safe-shutdown --username "YourUsername"
--password "YourPassword"
The full list of commands is available at http://localhost:8080/cli
Credits to Francisco post for cli
commands.
Reference:
Hope helps someone.
DailyJS has a good tutorial (long series of 24 posts) that walks you through all the aspects of building a notepad app (including all the possible extras).
Heres an overview of the tutorial: http://dailyjs.com/2010/11/01/node-tutorial/
And heres a link to all the posts: http://dailyjs.com/tags.html#nodepad
If you're looking to get the best performance possible, you might want to consider using Asynchronous I/O rather than threads. The overhead associated with thousands of OS threads is non-trivial and the context switching within the Python interpreter adds even more on top of it. Threading will certainly get the job done but I suspect that an asynchronous route will provide better overall performance.
Specifically, I'd suggest the async web client in the Twisted library (http://www.twistedmatrix.com). It has an admittedly steep learning curve but it quite easy to use once you get a good handle on Twisted's style of asynchronous programming.
A HowTo on Twisted's asynchronous web client API is available at:
http://twistedmatrix.com/documents/current/web/howto/client.html
You can use this
string x = "ABCGH"
char[] charX = x.ToCharArray();
Array.Sort(charX);
This will sort your string.
Others have provided answers for how to change the title size, but as for the axes tick label size, you can also use the set_tick_params method.
E.g., to make the x-axis tick label size small:
ax.xaxis.set_tick_params(labelsize='small')
or, to make the y-axis tick label large:
ax.yaxis.set_tick_params(labelsize='large')
You can also enter the labelsize
as a float, or any of the following string options: 'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', or 'xx-large'.
Here's a trick I recently worked out for executing raw sql with binds:
binds = SomeRecord.bind(a_string_field: value1, a_date_field: value2) +
SomeOtherRecord.bind(a_numeric_field: value3)
SomeRecord.connection.exec_query <<~SQL, nil, binds
SELECT *
FROM some_records
JOIN some_other_records ON some_other_records.record_id = some_records.id
WHERE some_records.a_string_field = $1
AND some_records.a_date_field < $2
AND some_other_records.a_numeric_field > $3
SQL
where ApplicationRecord
defines this:
# Convenient way of building custom sql binds
def self.bind(column_values)
column_values.map do |column_name, value|
[column_for_attribute(column_name), value]
end
end
and that is similar to how AR binds its own queries.
The simplest way is to generate a random nuber between 0-1 then strech it by multiplying, and shifting it.
So yo would multiply by (x-y) so the result is in the range of 0 to x-y,
Then add x and you get the random number between x and y.
To get a five multiplier use rounding. If this is unclear let me know and I'll add code snippets.
Getting a list of tables:
SELECT
Table_Name = Name,
FROM
MSysObjects
WHERE
(Left([Name],1)<>"~")
AND (Left([Name],4) <> "MSys")
AND ([Type] In (1, 4, 6))
ORDER BY
Name
You can use the .not() method:
$(".content_box a").not(".button")
Alternatively, you can also use the :not() selector:
$(".content_box a:not('.button')")
There is little difference between the two approaches, except .not()
is more readable (especially when chained) and :not()
is very marginally faster. See this Stack Overflow answer for more info on the differences.
I noticed that there is another CSS selector that does the same thing . The syntax is as follows :
[id|="name_id"]
This will select all elements ID which begins with the word enclosed in double quotes.
I've been able to create a single exe file with all resources embeded into the exe. I'm building on windows. so that will explain some of the os.system calls i'm using.
First I tried converting all my images into bitmats and then all my data files into text strings. but this caused the final exe to be very very large.
After googleing for a week i figured out how to alter py2exe script to meet my needs.
here is the patch link on sourceforge i submitted, please post comments so we can get it included in the next distribution.
http://sourceforge.net/tracker/index.php?func=detail&aid=3334760&group_id=15583&atid=315583
this explanes all the changes made, i've simply added a new option to the setup line. here is my setup.py.
i'll try to comment it as best I can. Please know that my setup.py is complex do to the fact that i'm access the images by filename. so I must store a list to keep track of them.
this is from a want-to-b screen saver I was trying to make.
I use exec to generate my setup at run time, its easyer to cut and paste like that.
exec "setup(console=[{'script': 'launcher.py', 'icon_resources': [(0, 'ICON.ico')],\
'file_resources': [%s], 'other_resources': [(u'INDEX', 1, resource_string[:-1])]}],\
options={'py2exe': py2exe_options},\
zipfile = None )" % (bitmap_string[:-1])
breakdown
script = py script i want to turn to an exe
icon_resources = the icon for the exe
file_resources = files I want to embed into the exe
other_resources = a string to embed into the exe, in this case a file list.
options = py2exe options for creating everything into one exe file
bitmap_strings = a list of files to include
Please note that file_resources is not a valid option untill you edit your py2exe.py file as described in the link above.
first time i've tried to post code on this site, if I get it wrong don't flame me.
from distutils.core import setup
import py2exe #@UnusedImport
import os
#delete the old build drive
os.system("rmdir /s /q dist")
#setup my option for single file output
py2exe_options = dict( ascii=True, # Exclude encodings
excludes=['_ssl', # Exclude _ssl
'pyreadline', 'difflib', 'doctest', 'locale',
'optparse', 'pickle', 'calendar', 'pbd', 'unittest', 'inspect'], # Exclude standard library
dll_excludes=['msvcr71.dll', 'w9xpopen.exe',
'API-MS-Win-Core-LocalRegistry-L1-1-0.dll',
'API-MS-Win-Core-ProcessThreads-L1-1-0.dll',
'API-MS-Win-Security-Base-L1-1-0.dll',
'KERNELBASE.dll',
'POWRPROF.dll',
],
#compressed=None, # Compress library.zip
bundle_files = 1,
optimize = 2
)
#storage for the images
bitmap_string = ''
resource_string = ''
index = 0
print "compile image list"
for image_name in os.listdir('images/'):
if image_name.endswith('.jpg'):
bitmap_string += "( " + str(index+1) + "," + "'" + 'images/' + image_name + "'),"
resource_string += image_name + " "
index += 1
print "Starting build\n"
exec "setup(console=[{'script': 'launcher.py', 'icon_resources': [(0, 'ICON.ico')],\
'file_resources': [%s], 'other_resources': [(u'INDEX', 1, resource_string[:-1])]}],\
options={'py2exe': py2exe_options},\
zipfile = None )" % (bitmap_string[:-1])
print "Removing Trash"
os.system("rmdir /s /q build")
os.system("del /q *.pyc")
print "Build Complete"
ok, thats it for the setup.py now the magic needed access the images. I developed this app without py2exe in mind then added it later. so you'll see access for both situations. if the image folder can't be found it tries to pull the images from the exe resources. the code will explain it. this is part of my sprite class and it uses a directx. but you can use any api you want or just access the raw data. doesn't matter.
def init(self):
frame = self.env.frame
use_resource_builtin = True
if os.path.isdir(SPRITES_FOLDER):
use_resource_builtin = False
else:
image_list = LoadResource(0, u'INDEX', 1).split(' ')
for (model, file) in SPRITES.items():
texture = POINTER(IDirect3DTexture9)()
if use_resource_builtin:
data = LoadResource(0, win32con.RT_RCDATA, image_list.index(file)+1) #windll.kernel32.FindResourceW(hmod,typersc,idrsc)
d3dxdll.D3DXCreateTextureFromFileInMemory(frame.device, #Pointer to an IDirect3DDevice9 interface
data, #Pointer to the file in memory
len(data), #Size of the file in memory
byref(texture)) #ppTexture
else:
d3dxdll.D3DXCreateTextureFromFileA(frame.device, #@UndefinedVariable
SPRITES_FOLDER + file,
byref(texture))
self.model_sprites[model] = texture
#else:
# raise Exception("'sprites' folder is not present!")
Any questions fell free to ask.
To decode json, you have to pass the json string. Currently you're trying to pass an object:
>>> response = urlopen(url)
>>> response
<addinfourl at 2146100812 whose fp = <socket._fileobject object at 0x7fe8cc2c>>
You can fetch the data with response.read()
.
Assign the enddate to some date variable because AddDays
method returns new Datetime as the result..
Datetime somedate=endDate.AddDays(2);
I have had the same issue in the past (how to produce files that Excel can read, and other tools can also read). I was using TSV rather than CSV, but the same problem with encodings came up.
I failed to find any way to get Excel to recognize UTF-8 automatically, and I was not willing/able to inflict on the consumers of the files complicated instructions how to open them. So I encoded them as UTF-16le (with a BOM) instead of UTF-8. Twice the size, but Excel can recognize the encoding. And they compress well, so the size rarely (but sadly not never) matters.
well,
I used System.setProperty("java.net.preferIPv4Stack" , "true");
and it works from JAVA, but it doesn't work on JBOSS AS7.
Here is my work around solution,
Add the below line to the end of the file ${JBOSS_HOME}/bin/standalone.conf.bat (just after :JAVA_OPTS_SET
)
set "JAVA_OPTS=%JAVA_OPTS% -Djava.net.preferIPv4Stack=true"
Note: restart JBoss server
Try Winhttrack
...offline browser utility.
It allows you to download a World Wide Web site from the Internet to a local directory, building recursively all directories, getting HTML, images, and other files from the server to your computer. HTTrack arranges the original site's relative link-structure. Simply open a page of the "mirrored" website in your browser, and you can browse the site from link to link, as if you were viewing it online. HTTrack can also update an existing mirrored site, and resume interrupted downloads. HTTrack is fully configurable, and has an integrated help system.
WinHTTrack is the Windows 2000/XP/Vista/Seven release of HTTrack, and WebHTTrack the Linux/Unix/BSD release...
Enter some junk value into your .htaccess
e.g. foo bar
, sakjnaskljdnas
any keyword not recognized by htaccess
and visit your URL. If it is working, you should get a
500 Internal Server Error
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request....
I suggest you to put it soon after RewriteEngine on
.
Since you are on your machine. I presume you have access to apache .conf
file.
open the .conf
file, and look for a line similar to:
LoadModule rewrite_module modules/mod_rewrite.so
If it is commented(#), uncomment and restart apache.
To log rewrite
RewriteEngine On
RewriteLog "/path/to/rewrite.log"
RewriteLogLevel 9
Put the above 3 lines in your virtualhost
. restart the httpd.
RewriteLogLevel 9
Using a high value for Level will slow down your Apache server dramatically! Use the rewriting logfile at a Level greater than 2 only for debugging!
Level 9 will log almost every rewritelog detail.
Things have changed in Apache 2.4:
FROM Upgrading to 2.4 from 2.2
The RewriteLog and RewriteLogLevel directives have been removed. This functionality is now provided by configuring the appropriate level of logging for the mod_rewrite module using the LogLevel directive. See also the mod_rewrite logging section.
For more on LogLevel, refer LogLevel Directive
you can accomplish
RewriteLog "/path/to/rewrite.log"
in this manner now
LogLevel debug rewrite_module:debug
EDIT: I hadn't noticed you needed the position as well. You can't use IndexOf
directly on a value of an array type, because it's implemented explicitly. However, you can use:
IList<string> arrayAsList = (IList<string>) stringArray;
int index = arrayAsList.IndexOf(value);
if (index != -1)
{
...
}
(This is similar to calling Array.IndexOf
as per Darin's answer - just an alternative approach. It's not clear to me why IList<T>.IndexOf
is implemented explicitly in arrays, but never mind...)
So, youtube gives out the iframe tag as follows:
<iframe width="560" height="315" src="https://www.youtube.com/embed/2EIeUlvHAiM" frameborder="0" allowfullscreen></iframe>
In my case, i just changed it to width="100%" and left the rest as is. It's not the most elegant solution (after all, in different devices you'll get weird ratios) But the video itself does not get deformed, just the frame.
The tibble vignette has an updated way to change its default printing behavior:
You can control the default appearance with options:
options(tibble.print_max = n, tibble.print_min = m)
: if there are more than n rows, print only the first m rows. Useoptions(tibble.print_max = Inf)
to always show all rows.
options(tibble.width = Inf)
will always print all columns, regardless of the width of the screen.
examples
This will always print all rows:
options(tibble.print_max = Inf)
This will not actually limit the printing to 50 lines:
options(tibble.print_max = 50)
But this will restrict printing to 50 lines:
options(tibble.print_max = 50, tibble.print_min = 50)
var startDt=document.getElementById("startDateId").value;
var endDt=document.getElementById("endDateId").value;
if( (new Date(startDt).getTime() > new Date(endDt).getTime()))
{
----------------------------------
}
Everything is cool, man. The 'u' is a good thing, it indicates that the string is of type Unicode in python 2.x.
http://docs.python.org/2/howto/unicode.html#the-unicode-type
None of the highly upvoted answers worked for me. They threw various undefined errors and ended up calculating inf/nan for angles. I suspect perhaps the behavior of LatLngBounds has changed over time. In any case, I found this code to work for my needs, perhaps it can help someone:
function latRad(lat) {
var sin = Math.sin(lat * Math.PI / 180);
var radX2 = Math.log((1 + sin) / (1 - sin)) / 2;
return Math.max(Math.min(radX2, Math.PI), -Math.PI) / 2;
}
function getZoom(lat_a, lng_a, lat_b, lng_b) {
let latDif = Math.abs(latRad(lat_a) - latRad(lat_b))
let lngDif = Math.abs(lng_a - lng_b)
let latFrac = latDif / Math.PI
let lngFrac = lngDif / 360
let lngZoom = Math.log(1/latFrac) / Math.log(2)
let latZoom = Math.log(1/lngFrac) / Math.log(2)
return Math.min(lngZoom, latZoom)
}
The data type TEXT is old and should not be used anymore, it is a pain to select data out of a TEXT column.
ntext, text, and image (Transact-SQL)
ntext, text, and image data types will be removed in a future version of Microsoft SQL Server. Avoid using these data types in new development work, and plan to modify applications that currently use them. Use nvarchar(max), varchar(max), and varbinary(max) instead.
you need to use TEXTPTR (Transact-SQL) to retrieve the text data.
Also see this article on Handling The Text Data Type.
From the docs, the recommended way of getting a timezone aware datetime object from seconds since epoch is:
from datetime import datetime, timezone
datetime.fromtimestamp(timestamp, timezone.utc)
from datetime import datetime
import pytz
datetime.fromtimestamp(timestamp, pytz.utc)
You can also get it by
string(//bookstore/book[1]/title/@lang)
string(//bookstore/book[2]/title/@lang)
although if you are using XMLDOM with JavaScript you can code something like
var n1 = uXmlDoc.selectSingleNode("//bookstore/book[1]/title/@lang");
and n1.text
will give you the value "eng"
Another kludge, ugh, but it's easy and works for me in VS 2013. Click on the project. In the properties panel should be an entry named Project File with a value
(your project name).vbproj
Change the project name - such as adding an -01 to the end. The original .zip file that was locked is still there, but no longer referenced ... so your work can continue. Next time the computer is rebooted, that lock disappears and you can delete the errant file.
This answer is intended for developers.
Clearing the cache means that new shares of this webpage will show the new content which is provided in the OG tags. But only if the URL that you are working on has less than 50 interactions (likes + shares). It will also not affect old links to this webpage which have already been posted on Facebook. Only when sharing the URL on Facebook again will the way that Facebook shows the link be updated.
catandmouse's answer is correct but you can also make Facebook clear the OG (OpenGraph) cache by sending a post request to graph.facebook.com (works for both http and https as of the writing of this answer). You do not need an access token.
A post request to graph.facebook.com may look as follows:
POST / HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Host: graph.facebook.com
Content-Length: 63
Accept-Encoding: gzip
User-Agent: Mojolicious (Perl)
id=<url_encoded_url>&scrape=true
In Perl, you can use the following code where the library Mojo::UserAgent is used to send and receive HTTP requests:
sub _clear_og_cache_on_facebook {
my $fburl = "http://graph.facebook.com";
my $ua = Mojo::UserAgent->new;
my $clearurl = <the url you want Facebook to forget>;
my $post_body = {id => $clearurl, scrape => 'true'};
my $res = $ua->post($fburl => form => $post_body)->res;
my $code = $res->code;
unless ($code eq '200') {
Log->warn("Clearing cached OG data for $clearurl failed with code $code.");
}
}
}
Sending this post request through the terminal can be done with the following command:
curl -F id="<URL>" -F scrape=true graph.facebook.com
Yes it s working: remove the path of jdk 9.0 and uninstall this from Cantroll panel instead install jdk 8version and set it's path, it is working easily with netbean 8.2.
My preferred method for doing this is via a hash function (borrowed from here). This allows you to utilize the efficiency of a switch statement even when working with char *'s:
#include "stdio.h"
#define LS 5863588
#define CD 5863276
#define MKDIR 210720772860
#define PWD 193502992
const unsigned long hash(const char *str) {
unsigned long hash = 5381;
int c;
while ((c = *str++))
hash = ((hash << 5) + hash) + c;
return hash;
}
int main(int argc, char *argv[]) {
char *p_command = argv[1];
switch(hash(p_command)) {
case LS:
printf("Running ls...\n");
break;
case CD:
printf("Running cd...\n");
break;
case MKDIR:
printf("Running mkdir...\n");
break;
case PWD:
printf("Running pwd...\n");
break;
default:
printf("[ERROR] '%s' is not a valid command.\n", p_command);
}
}
Of course, this approach requires that the hash values for all possible accepted char *'s are calculated in advance. I don't think this is too much of an issue; however, since the switch statement operates on fixed values regardless. A simple program can be made to pass char *'s through the hash function and output their results. These results can then be defined via macros as I have done above.
class Frame1 extends javax.swing.JFrame {
remove(previouspanel); //or getContentPane().removeAll();
add(newpanel); //or setContentPane(newpanel);
invalidate(); validate(); // or ((JComponent) getContentPane()).revalidate();
repaint(); //DO NOT FORGET REPAINT
}
Sometimes you can do the work without using the revalidation and sometimes without using the repaint.My advise use both.
int num;
bool isNumeric = int.TryParse("123", out num);
Now you can use insertOne method and in promise's result.insertedId
You can use either length property and length
is better on performance than size
.
$('#input1 option').length;
OR you can use size function like (removed in jQuery v3)
$('#input1 option').size();
$(document).ready(function(){
console.log($('#input1 option').size());
console.log($('#input1 option').length);
});
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<select data-attr="dropdown" id="input1">
<option value="Male" id="Male">Male</option>
<option value="Female" id="Female">Female</option>
</select>
_x000D_
We made the decision to store as varbinary for http://www.freshlogicstudios.com/Products/Folders/ halfway expecting performance issues. I can say that we've been pleasantly surprised at how well it's worked out.
You need to check that Session["emp_num"]
is not null
before trying to convert it to a string otherwise you will get a null reference exception.
I'd go with your first example - but you could make it slightly more "elegant".
There are a couple of ways, but the ones that springs to mind are:
if (Session["emp_num"] is string)
{
}
or
if (!string.IsNullOrEmpty(Session["emp_num"] as string))
{
}
This will return null if the variable doesn't exist or isn't a string.
Change hibernate.cfg.xml
to:
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="use_sql_comments">true</property>
Include log4j and below entries in "log4j.properties":
log4j.logger.org.hibernate=INFO, hb
log4j.logger.org.hibernate.SQL=DEBUG
log4j.logger.org.hibernate.type=TRACE
log4j.appender.hb=org.apache.log4j.ConsoleAppender
log4j.appender.hb.layout=org.apache.log4j.PatternLayout
t
refers to the text mode. There is no difference between r
and rt
or w
and wt
since text mode is the default.
Documented here:
Character Meaning
'r' open for reading (default)
'w' open for writing, truncating the file first
'x' open for exclusive creation, failing if the file already exists
'a' open for writing, appending to the end of the file if it exists
'b' binary mode
't' text mode (default)
'+' open a disk file for updating (reading and writing)
'U' universal newlines mode (deprecated)
The default mode is 'r'
(open for reading text, synonym of 'rt'
).
This does it:
Do
c = c + 1
Loop While Cells(c, "A").Value <> ""
'prints the last empty row
Debug.Print c
Use This its is very useful for your solution:
I would advice you to learn using ant, which is very-well suited for this task and is very easy to grasp and well documented.
You would just have to define a target like this in the build.xml file:
<target name="compile">
<javac srcdir="your/source/directory"
destdir="your/output/directory"
classpath="xyz.jar" />
</target>
str_replace(PHP_EOL, null, $str);
After various attempt, only this works well for me (under ios 8):
NSURLCache *cache = [[NSURLCache alloc] initWithMemoryCapacity:1 diskCapacity:1 diskPath:nil];
[NSURLCache setSharedURLCache:cache];
$mydatetime = "2012-04-02 02:57:54";
$datetimearray = explode(" ", $mydatetime);
$date = $datetimearray[0];
$time = $datetimearray[1];
$reformatted_date = date('d-m-Y',strtotime($date));
$reformatted_time = date('Gi.s',strtotime($time));
If you have more than one version of python installed, run the respective pip command.
For example for python3.6 run the following
pip3.6 install beautifulsoup4
To check the available command/version of pip and python on Mac run
ls /usr/local/bin
The discoverability is dismal, but it's quite clever how Advanced Rest Client handles basic authentication. The shortcut abraham mentioned didn't work for me, but a little poking around revealed how it does it.
The first thing you need to do is add the Authorization
header:
Then, a nifty little thing pops up when you focus the value
input (note the "construct" box in the lower right):
Clicking it will bring up a box. It even does OAuth, if you want!
Tada! If you leave the value field blank when you click "construct," it will add the Basic
part to it (I assume it will also add the necessary OAuth stuff, too, but I didn't try that, as my current needs were for basic authentication), so you don't need to do anything.
Raj_89 solution is the closest to being valid option altough as mentioned by Kevin Swarts in comment it is going to break IE, which for large number of corporate client is an issue (and telling your client that you won't code for IE "because reasons" is unlikely to make your boss happy ;) ).
So I played around with it and here is the problem: the 'onmousedown' event is throwing a fit in IE, so what we want to do, is to prevent default when user clicks the dropdown for the first time. It is important this is only time we do this: if we prevent defult on the next click, when user makes his pick, the onchange event won't fire.
This way we get nice dropdown, no flicker, no breaking down IE - just works... well at least in IE10 and up, and latest relases of all the other major browsers.
<p>Which is the most annoing browser of them all:</p>
<select id="sel" size = "1">
<option></option>
<option>IE 9</option>
<option>IE 10</option>
<option>Edge</option>
<option>Firefox</option>
<option>Chrome</option>
<option>Opera</option>
</select>
Here is the fiddle: https://jsfiddle.net/88cxzhom/27/
Few more things to notice: 1) The absolute positioning and setting z-index is helpful to avoid moving other elements when the options are displayed. 2) Use 'currentTarget' property - this will be the select element across all browsers. While 'target' will be select in IE, the rest will actually allow you to work with option.
Hope this helps someone.
you can use this simple way
<select onchange="location = this.value;">
<option value="/finished">Finished</option>
<option value="/break">Break</option>
<option value="/issue">Issues</option>
<option value="/downtime">Downtime</option>
</select>
will redirect to route url you can direct to .html page or direct to some link just change value
in option.
If you click Manage Hudson / Reload Configuration From Disk, Hudson will reload all the build history data.
If the data on disk is messed up, you'll need to go to your %HUDSON_HOME%\jobs\<projectname> directory and restore the build directories as they're supposed to be. Then reload config data.
If you're simply asking how to remove all build history, you can just delete the builds one by one via the UI if there are just a few, or go to the %HUDSON_HOME%\jobs\<projectname> directory and delete all the subdirectories there -- they correspond to the builds. Afterwards restart the service for the changes to take effect.
Both choices refer to what algorithm the identity provider uses to sign the JWT. Signing is a cryptographic operation that generates a "signature" (part of the JWT) that the recipient of the token can validate to ensure that the token has not been tampered with.
RS256 (RSA Signature with SHA-256) is an asymmetric algorithm, and it uses a public/private key pair: the identity provider has a private (secret) key used to generate the signature, and the consumer of the JWT gets a public key to validate the signature. Since the public key, as opposed to the private key, doesn't need to be kept secured, most identity providers make it easily available for consumers to obtain and use (usually through a metadata URL).
HS256 (HMAC with SHA-256), on the other hand, involves a combination of a hashing function and one (secret) key that is shared between the two parties used to generate the hash that will serve as the signature. Since the same key is used both to generate the signature and to validate it, care must be taken to ensure that the key is not compromised.
If you will be developing the application consuming the JWTs, you can safely use HS256, because you will have control on who uses the secret keys. If, on the other hand, you don't have control over the client, or you have no way of securing a secret key, RS256 will be a better fit, since the consumer only needs to know the public (shared) key.
Since the public key is usually made available from metadata endpoints, clients can be programmed to retrieve the public key automatically. If this is the case (as it is with the .Net Core libraries), you will have less work to do on configuration (the libraries will fetch the public key from the server). Symmetric keys, on the other hand, need to be exchanged out of band (ensuring a secure communication channel), and manually updated if there is a signing key rollover.
Auth0 provides metadata endpoints for the OIDC, SAML and WS-Fed protocols, where the public keys can be retrieved. You can see those endpoints under the "Advanced Settings" of a client.
The OIDC metadata endpoint, for example, takes the form of https://{account domain}/.well-known/openid-configuration
. If you browse to that URL, you will see a JSON object with a reference to https://{account domain}/.well-known/jwks.json
, which contains the public key (or keys) of the account.
If you look at the RS256 samples, you will see that you don't need to configure the public key anywhere: it's retrieved automatically by the framework.
.add() also works.
var daySelect = document.getElementById("myDaySelect");
var myOption = document.createElement("option");
myOption.text = "test";
myOption.value = "value";
daySelect.add(option);
I had the same issue for my angular project, then I make it work in Chrome by changing the setting. Go to Chrome setting -->site setting -->Insecure content --> click add button of allow, then add your domain name [*.]XXXX.biz
Now problem will be solved.
Starting SQL SERVER 2005, you can do this...
USE AdventureWorks;
GO
WITH OrderedOrders AS
(
SELECT SalesOrderID, OrderDate,
ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber'
FROM Sales.SalesOrderHeader
)
SELECT *
FROM OrderedOrders
WHERE RowNumber BETWEEN 10 AND 20;
or something like this for 2000 and below versions...
SELECT TOP 10 * FROM (SELECT TOP 20 FROM Table ORDER BY Id) ORDER BY Id DESC
To answer this question from my understanding...
An authentication system that uses REST so that you do not need to actually track or manage the users in your system. This is done by using the HTTP methods POST, GET, PUT, DELETE. We take these 4 methods and think of them in terms of database interaction as CREATE, READ, UPDATE, DELETE (but on the web we use POST and GET because that is what anchor tags support currently). So treating POST and GET as our CREATE/READ/UPDATE/DELETE (CRUD) then we can design routes in our web application that will be able to deduce what action of CRUD we are achieving.
For example, in a Ruby on Rails application we can build our web app such that if a user who is logged in visits http://store.com/account/logout then the GET of that page can viewed as the user attempting to logout. In our rails controller we would build an action in that logs the user out and sends them back to the home page.
A GET on the login page would yield a form. a POST on the login page would be viewed as a login attempt and take the POST data and use it to login.
To me, it is a practice of using HTTP methods mapped to their database meaning and then building an authentication system with that in mind you do not need to pass around any session id's or track sessions.
I'm still learning -- if you find anything I have said to be wrong please correct me, and if you learn more post it back here. Thanks.
Just making code shorter you can use ES6 features. The same things can be written as
app.get("/recipes", (req, res) => {
res.render("recipes.ejs", {
recipes
});
});
And the Templeate can be render as the same!
<%if (recipes.length > 0) { %>
// Do something with more than 1 recipe
<% } %>
By the way, in the question above:
For:
Hello, my name is bob
Find part:
my name is (\w)+
With replace part:
my name used to be \1
Would return:
Hello, my name used to be b
Change find part to:
my name is (\w+)
And replace will be what you expect:
Hello, my name used to be bob
While (\w)+ will match "bob", it is not the grouping you want for replacement.
I prefer this
if(in_array($id,$user_access_arr) == false)
respective
if (in_array(search_value, array) == false)
// value is not in array
Here's an example for those who have more complicated conditions and using Doctrine 2.* with QueryBuilder
:
$qb->where('o.foo = 1')
->andWhere($qb->expr()->orX(
$qb->expr()->eq('o.bar', 1),
$qb->expr()->eq('o.bar', 2)
))
;
Those are expressions mentioned in Czechnology answer.
Old topic, but never clearly answered. I've been working on similar as well, and found the solution:
The pipe (|) in this code sample from Austin isn't the delimiter, but to pipe the ForEach-Object, so if you want to use it as delimiter, you need to do this:
Import-Csv H:\Programs\scripts\SomeText.csv -delimiter "|" |`
ForEach-Object {
$Name += $_.Name
$Phone += $_."Phone Number"
}
Spent a good 15 minutes on this myself before I understood what was going on. Hope the answer helps the next person reading this avoid the wasted minutes! (Sorry for expanding on your comment Austin)
suppose you have a button:
<button onclick="backBtn();">Back...</button>
Here the code of the backBtn method:
function backBtn(){
parent.history.back();
return false;
}
Following on from @Wilf's answer, I was trying to import a spreadsheet which had spaces in one of the headings, which I eliminated. I checked for leading and trailing spaces, but still had the same problem - until I used Ctrl-Right from the last real heading cell, and found another cell on the first row that looked blank but obviously contained some whitespace. After deleting this, my import works. Thanks for the pointers :)
To complement the version of Leo Dabus, I added support for projects written Swift and Objective-C, also added support for the optional milliseconds, probably isn't the best but you would get the point:
Xcode 8 and Swift 3
extension Date {
struct Formatter {
static let iso8601: DateFormatter = {
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
return formatter
}()
}
var iso8601: String {
return Formatter.iso8601.string(from: self)
}
}
extension String {
var dateFromISO8601: Date? {
var data = self
if self.range(of: ".") == nil {
// Case where the string doesn't contain the optional milliseconds
data = data.replacingOccurrences(of: "Z", with: ".000000Z")
}
return Date.Formatter.iso8601.date(from: data)
}
}
extension NSString {
var dateFromISO8601: Date? {
return (self as String).dateFromISO8601
}
}
You can do something like this to find out the cookies's value:
Request.Cookies[SESSION_COOKIE_NAME].Value
Although Chang's answer explains how to plot multiple times on the same figure, in this case you might be better off in this case using a groupby
and unstack
ing:
(Assuming you have this in dataframe, with datetime index already)
In [1]: df
Out[1]:
value
datetime
2010-01-01 1
2010-02-01 1
2009-01-01 1
# create additional month and year columns for convenience
df['Month'] = map(lambda x: x.month, df.index)
df['Year'] = map(lambda x: x.year, df.index)
In [5]: df.groupby(['Month','Year']).mean().unstack()
Out[5]:
value
Year 2009 2010
Month
1 1 1
2 NaN 1
Now it's easy to plot (each year as a separate line):
df.groupby(['Month','Year']).mean().unstack().plot()
When analysing a Galaxy Ace 2.2 in a hex editor. The hex seemed to point to the device using FAT16 as its file system. I thought this unusual. However Fat 16 is compatible with the Linux kernel.
Dictionaries in Swift (and other languages) are not ordered. When you iterate through the dictionary, there's no guarentee that the order will match the initialization order. In this example, Swift processes the "Square" key before the others. You can see this by adding a print statement to the loop. 25 is the 5th element of Square so largest would be set 5 times for the 5 elements in Square and then would stay at 25.
let interestingNumbers = [
"Prime": [2, 3, 5, 7, 11, 13],
"Fibonacci": [1, 1, 2, 3, 5, 8],
"Square": [1, 4, 9, 16, 25]
]
var largest = 0
for (kind, numbers) in interestingNumbers {
println("kind: \(kind)")
for number in numbers {
if number > largest {
largest = number
}
}
}
largest
This prints:
kind: Square kind: Prime kind: Fibonacci
If you only rely on ASCII characters, you can rely on using the hex ranges on the ASCII table. Here is a regex that will grab all special characters in the range of 33-47
, 58-64
, 91-96
, 123-126
[\x21-\x2F\x3A-\x40\x5B-\x60\x7B-\x7E]
However you can think of special characters as not normal characters. If we take that approach, you can simply do this
^[A-Za-z0-9\s]+
Hower this will not catch _
^
and probably others.
It looks to me as though the basic problem is that you have one wait()
call rather than a loop that waits until there are no more children. You also only wait if the last fork()
is successful rather than if at least one fork()
is successful.
You should only use _exit()
if you don't want normal cleanup operations - such as flushing open file streams including stdout
. There are occasions to use _exit()
; this is not one of them. (In this example, you could also, of course, simply have the children return instead of calling exit()
directly because returning from main()
is equivalent to exiting with the returned status. However, most often you would be doing the forking and so on in a function other than main()
, and then exit()
is often appropriate.)
Hacked, simplified version of your code that gives the diagnostics I'd want. Note that your for
loop skipped the first element of the array (mine doesn't).
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
int main(void)
{
pid_t child_pid, wpid;
int status = 0;
int i;
int a[3] = {1, 2, 1};
printf("parent_pid = %d\n", getpid());
for (i = 0; i < 3; i++)
{
printf("i = %d\n", i);
if ((child_pid = fork()) == 0)
{
printf("In child process (pid = %d)\n", getpid());
if (a[i] < 2)
{
printf("Should be accept\n");
exit(1);
}
else
{
printf("Should be reject\n");
exit(0);
}
/*NOTREACHED*/
}
}
while ((wpid = wait(&status)) > 0)
{
printf("Exit status of %d was %d (%s)\n", (int)wpid, status,
(status > 0) ? "accept" : "reject");
}
return 0;
}
Example output (MacOS X 10.6.3):
parent_pid = 15820
i = 0
i = 1
In child process (pid = 15821)
Should be accept
i = 2
In child process (pid = 15822)
Should be reject
In child process (pid = 15823)
Should be accept
Exit status of 15823 was 256 (accept)
Exit status of 15822 was 0 (reject)
Exit status of 15821 was 256 (accept)
int
is a primitive data type while Integer
is a Reference or Wrapper Type (Class) in Java.
after java 1.5
which introduce the concept of autoboxing and unboxing you can initialize both int
or Integer
like this.
int a= 9
Integer a = 9 // both valid After Java 1.5.
why
Integer.parseInt("1");
but notint.parseInt("1");
??
Integer
is a Class defined in jdk
library and parseInt()
is a static method belongs to Integer
Class
So, Integer.parseInt("1");
is possible in java. but int
is primitive type (assume like a keyword) in java. So, you can't call parseInt()
with int
.
Anon's answer works great for me, but I just need to modify the statement for days
from:
days = dates - dates.astype('datetime64[M]') + 1
to:
days = dates.astype('datetime64[D]') - dates.astype('datetime64[M]') + 1
Use font
property of UILabel
:
label.font = UIFont(name:"HelveticaNeue-Bold", size: 16.0)
or use default system font
to bold text:
label.font = UIFont.boldSystemFont(ofSize: 16.0)
Params contains the following three groups of parameters:
match '/user/:id'
in routes.rb will set params[:id]params[:controller]
and params[:action]
is always available and contains the current controller and actionCorrect answer is simply:
SELECT a.group_id
FROM a
LEFT JOIN b ON a.group_id=b.group_id and b.user_id = 4
where b.user_id is null
and a.keyword like '%keyword%'
Here we are checking user_id = 4
(your user id from the session). Since we have it in the join criteria, it will return null values for any row in table b that does not match the criteria - ie, any group that that user_id is NOT in.
From there, all we need to do is filter for the null values, and we have all the groups that your user is not in.
If you just want the difference in years, there's:
SELECT EXTRACT(YEAR FROM date1) - EXTRACT(YEAR FROM date2) FROM mytable
Or do you want fractional years as well?
SELECT (date1 - date2) / 365.242199 FROM mytable
365.242199 is 1 year in days, according to Google.
eldNew <- eld[-14,]
See ?"["
for a start ...
For ‘[’-indexing only: ‘i’, ‘j’, ‘...’ can be logical vectors, indicating elements/slices to select. Such vectors are recycled if necessary to match the corresponding extent. ‘i’, ‘j’, ‘...’ can also be negative integers, indicating elements/slices to leave out of the selection.
(emphasis added)
edit: looking around I notice How to delete the first row of a dataframe in R? , which has the answer ... seems like the title should have popped to your attention if you were looking for answers on SO?
edit 2: I also found How do I delete rows in a data frame? , searching SO for delete row data frame
...
Also http://rwiki.sciviews.org/doku.php?id=tips:data-frames:remove_rows_data_frame
You could use the :first-child and :last-child pseudo-selectors
:
tr td:first-child{
color:red;
}
tr td:last-child {
color:green
}
Or you can use other way like
// To first child
tr td:nth-child(1){
color:red;
}
// To last child
tr td:nth-last-child(1){
color:green;
}
Both way are perfectly working
Here are the PHP mail settings I use:
//Mail sending function
$subject = $_POST['name'];
$to = $_POST['email'];
$from = "[email protected]";
//data
$msg = "Your MSG <br>\n";
//Headers
$headers = "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=UTF-8\r\n";
$headers .= "From: <".$from. ">" ;
mail($to,$subject,$msg,$headers);
echo "Mail Sent.";
curl -sS https://getcomposer.org/installer | sudo php
sudo mv composer.phar /usr/local/bin/composer
export PATH="$HOME/.composer/vendor/bin:$PATH"
If you have installed by this way simply
Delete composer.phar from where you've putted it.
In this case path will be /usr/local/bin/composer
Note: There is no need to delete the exported path.
Safe Methods : Get Resource/No modification in resource
Idempotent : No change in resource status if requested many times
Unsafe Methods : Create or Update Resource/Modification in resource
Non-Idempotent : Change in resource status if requested many times
According to your requirement :
1) For safe and idempotent operation (Fetch Resource) use --------- GET METHOD
2) For unsafe and non-idempotent operation (Insert Resource) use--------- POST METHOD
3) For unsafe and idempotent operation (Update Resource) use--------- PUT METHOD
3) For unsafe and idempotent operation (Delete Resource) use--------- DELETE METHOD
old question, but posting this for fellow googlers:
Spin.js DOES WORK for this use case: http://fgnass.github.com/spin.js/
You can use Apache Commons Configuration library. The best part of this is, it won't even mess up the properties file and keeps it intact (even comments).
PropertiesConfiguration conf = new PropertiesConfiguration("propFile.properties");
conf.setProperty("key", "value");
conf.save();
After long search I found a working solution. My database does not use the sys.foreign_key_columns and the information_schema.key_column_usage only contain primary keys.
I use SQL Server 2015
SOLUTION 1 (rarely used)
If other solutions does not work, this will work fine:
WITH CTE AS
(
SELECT
TAB.schema_id,
TAB.name,
COL.name AS COLNAME,
COl.is_identity
FROM
sys.tables TAB INNER JOIN sys.columns COL
ON TAB.object_id = COL.object_id
)
SELECT
DB_NAME() AS [Database],
SCHEMA_NAME(Child.schema_id) AS 'Schema',
Child.name AS 'ChildTable',
Child.COLNAME AS 'ChildColumn',
Parent.name AS 'ParentTable',
Parent.COLNAME AS 'ParentColumn'
FROM
cte Child INNER JOIN CTE Parent
ON
Child.COLNAME=Parent.COLNAME AND
Child.name<>Parent.name AND
Child.is_identity+1=Parent.is_identity
SOLUTION 2 (commonly used)
In most of the cases this will work just fine:
SELECT
DB_NAME() AS [Database],
SCHEMA_NAME(fk.schema_id) AS 'Schema',
fk.name 'Name',
tp.name 'ParentTable',
cp.name 'ParentColumn',
cp.column_id,
tr.name 'ChildTable',
cr.name 'ChildColumn',
cr.column_id
FROM
sys.foreign_keys fk
INNER JOIN
sys.tables tp ON fk.parent_object_id = tp.object_id
INNER JOIN
sys.tables tr ON fk.referenced_object_id = tr.object_id
INNER JOIN
sys.foreign_key_columns fkc ON fkc.constraint_object_id = fk.object_id
INNER JOIN
sys.columns cp ON fkc.parent_column_id = cp.column_id AND fkc.parent_object_id = cp.object_id
INNER JOIN
sys.columns cr ON fkc.referenced_column_id = cr.column_id AND fkc.referenced_object_id = cr.object_id
WHERE
-- CONCAT(SCHEMA_NAME(fk.schema_id), '.', tp.name, '.', cp.name) LIKE '%my_table_name%' OR
-- CONCAT(SCHEMA_NAME(fk.schema_id), '.', tr.name, '.', cr.name) LIKE '%my_table_name%'
ORDER BY
tp.name, cp.column_id
NSDate *currentDate = [NSDate date];
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setHour:10];
NSDate *date = [gregorian dateByAddingComponents:comps toDate:currentDate options:0];
[comps release];
Not tested in xcode though :)
That's still a constant. See the JLS for more information regarding the naming convention for constants. But in reality, it's all a matter of preference.
The names of constants in interface types should be, and
final
variables of class types may conventionally be, a sequence of one or more words, acronyms, or abbreviations, all uppercase, with components separated by underscore"_"
characters. Constant names should be descriptive and not unnecessarily abbreviated. Conventionally they may be any appropriate part of speech. Examples of names for constants includeMIN_VALUE
,MAX_VALUE
,MIN_RADIX
, andMAX_RADIX
of the classCharacter
.A group of constants that represent alternative values of a set, or, less frequently, masking bits in an integer value, are sometimes usefully specified with a common acronym as a name prefix, as in:
interface ProcessStates { int PS_RUNNING = 0; int PS_SUSPENDED = 1; }
Obscuring involving constant names is rare:
- Constant names normally have no lowercase letters, so they will not normally obscure names of packages or types, nor will they normally shadow fields, whose names typically contain at least one lowercase letter.
- Constant names cannot obscure method names, because they are distinguished syntactically.
I think I found it. All you have to do is type in "`n" (WITH THE QUOTATION MARKS!)
Thanks!
Well the thing is that you probably actually don't want the test to run indefinitely. You just want to wait a longer amount of time before the library decides the element doesn't exist. In that case, the most elegant solution is to use implicit wait, which is designed for just that:
driver.manage().timeouts().implicitlyWait( ... )
“--single-branch” switch is your answer, but it only works if you have git version 1.8.X onwards, first check
#git --version
If you already have git version 1.8.X installed then simply use "-b branch and --single branch" to clone a single branch
#git clone -b branch --single-branch git://github/repository.git
By default in Ubuntu 12.04/12.10/13.10 and Debian 7 the default git installation is for version 1.7.x only, where --single-branch is an unknown switch. In that case you need to install newer git first from a non-default ppa as below.
sudo add-apt-repository ppa:pdoes/ppa
sudo apt-get update
sudo apt-get install git
git --version
Once 1.8.X is installed now simply do:
git clone -b branch --single-branch git://github/repository.git
Git will now only download a single branch from the server.
Youtube data 3 API , duration string to seconds conversion in Python
convert_YouTube_duration_to_seconds('P2DT1S')
172801convert_YouTube_duration_to_seconds('PT2H12M51S')
7971
def convert_YouTube_duration_to_seconds(duration):
day_time = duration.split('T')
day_duration = day_time[0].replace('P', '')
day_list = day_duration.split('D')
if len(day_list) == 2:
day = int(day_list[0]) * 60 * 60 * 24
day_list = day_list[1]
else:
day = 0
day_list = day_list[0]
hour_list = day_time[1].split('H')
if len(hour_list) == 2:
hour = int(hour_list[0]) * 60 * 60
hour_list = hour_list[1]
else:
hour = 0
hour_list = hour_list[0]
minute_list = hour_list.split('M')
if len(minute_list) == 2:
minute = int(minute_list[0]) * 60
minute_list = minute_list[1]
else:
minute = 0
minute_list = minute_list[0]
second_list = minute_list.split('S')
if len(second_list) == 2:
second = int(second_list[0])
else:
second = 0
return day + hour + minute + second
public static bool IsPositive<T>(T value)
where T : struct, IComparable<T>
{
return value.CompareTo(default(T)) > 0;
}
I had this same issue now and found that my sub-projects 'Public Header Folder Path' was set to an incorrect path (when compared with what my main project was using as its 'Header Search Path' and 'User Header Search Path').
e.g.
My main project had the following:
And the same for the User Header Search Paths
Whereas my sub-project (dependency) had the following:
Changing the 'Public Header Folder Path' to "../../Headers/BoxSDK" fixed the problem since the main project was already searching that folder ('../../Headers').
PS: I took some good screenshots, but I am not allowed to post an answer with images until I hit reputation 10 :(
I don't know the platform you're doing this on but I assume Windows due to the .bat extension.
Also I don't have a way to check this but this seems like the batch processor skips the If lines due to some errors and then executes the one with -dev.
You could try this by chaning the two jump targets (:yes
and :no
) along with the code. If then the line without -dev is executed you know your If lines are erroneous.
If so, please check if ==
is really the right way to do a comparison in .bat
files.
Also, judging from the way bash does this stuff, %foo=="y"
might evaluate to true only if %foo
includes the quotes. So maybe "%foo"=="y"
is the way to go.
You can add 1 to each example New = 5; old = 0;
(1+new) - (old+1) / (old +1) 5/ 1 * 100 ==> 500%
I would open another terminal on your laptop and do the scp from there, since you already know how to set that connection up.
scp username@remotecomputer:/path/to/file/you/want/to/copy where/to/put/file/on/laptop
The username@remotecomputer
is the same string you used with ssh initially.
You have mentioned Wrong id
alert(document.getElementById("name").value);
if you want to use name
attribute then
alert(document.getElementsByName("username")[0].value);
Updates:
input type="text" id="name" name="username"
id is different from name
Give the command SHOW CREATE TABLE whatever
Then look at the table definition.
It probably has a line like this
logtime TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
in it. DEFAULT CURRENT_TIMESTAMP
means that any INSERT
without an explicit time stamp setting uses the current time. Likewise, ON UPDATE CURRENT_TIMESTAMP
means that any update without an explicit timestamp results in an update to the current timestamp value.
You can control this default behavior when creating your table.
Or, if the timestamp column wasn't created correctly in the first place, you can change it.
ALTER TABLE whatevertable
CHANGE whatevercolumn
whatevercolumn TIMESTAMP NOT NULL
DEFAULT CURRENT_TIMESTAMP
ON UPDATE CURRENT_TIMESTAMP;
This will cause both INSERT and UPDATE operations on the table automatically to update your timestamp column. If you want to update whatevertable
without changing the timestamp, that is,
To prevent the column from updating when other columns change
then you need to issue this kind of update.
UPDATE whatevertable
SET something = 'newvalue',
whatevercolumn = whatevercolumn
WHERE someindex = 'indexvalue'
This works with TIMESTAMP
and DATETIME
columns. (Prior to MySQL version 5.6.5 it only worked with TIMESTAMP
s) When you use TIMESTAMP
s, time zones are accounted for: on a correctly configured server machine, those values are always stored in UTC and translated to local time upon retrieval.
Port 80 might be busy with other application like IIS. If you don't want to stop it, you can change the apache port. Here is the way..
httpd.conf
.Listen 80
Listen 1234
)The data-* attributes is used to store custom data private to the page or application
So Bootstrap uses these attributes for saving states of objects
<div class="row-2">
<ul>
<li><a href="index.html" class="active"><p style="margin-top: 10px;">Buy</p></a></li>
</ul>
Play with it
The easiest way to match both
^\([0-9]{3}\)[0-9]{3}-[0-9]{4}$
and
^[0-9]{3}-[0-9]{3}-[0-9]{4}$
is to use alternation ((...|...)
): specify them as two mostly-separate options:
^(\([0-9]{3}\)|[0-9]{3}-)[0-9]{3}-[0-9]{4}$
By the way, when Americans put the area code in parentheses, we actually put a space after that; for example, I'd write (123) 123-1234
, not (123)123-1234
. So you might want to write:
^(\([0-9]{3}\) |[0-9]{3}-)[0-9]{3}-[0-9]{4}$
(Though it's probably best to explicitly demonstrate the format that you expect phone numbers to be in.)
It''s not clear to me what you want.
If you want a CSS property to render the alt attribute value, then perhaps you're looking for the CSS attribute function for example:
IMG:before { content: attr(alt) }
If you want to put the alt attribute on a background image, then ... that's odd because the alt attribute is an HTML attribute whereas the background image is a CSS property. If you want to use the HTML alt attribute then I think you'd need a corresponding HTML element to put it in.
Why do you "need to use alt tags on background images": is this for a semantic reason or for some visual-effect reason (and if so, then what effect or what reason)?
Gabriel Lame's Theorem bounds the number of steps by log(1/sqrt(5)*(a+1/2))-2, where the base of the log is (1+sqrt(5))/2. This is for the the worst case scenerio for the algorithm and it occurs when the inputs are consecutive Fibanocci numbers.
A slightly more liberal bound is: log a, where the base of the log is (sqrt(2)) is implied by Koblitz.
For cryptographic purposes we usually consider the bitwise complexity of the algorithms, taking into account that the bit size is given approximately by k=loga.
Here is a detailed analysis of the bitwise complexity of Euclid Algorith:
Although in most references the bitwise complexity of Euclid Algorithm is given by O(loga)^3 there exists a tighter bound which is O(loga)^2.
Consider; r0=a, r1=b, r0=q1.r1+r2 . . . ,ri-1=qi.ri+ri+1, . . . ,rm-2=qm-1.rm-1+rm rm-1=qm.rm
observe that: a=r0>=b=r1>r2>r3...>rm-1>rm>0 ..........(1)
and rm is the greatest common divisor of a and b.
By a Claim in Koblitz's book( A course in number Theory and Cryptography) is can be proven that: ri+1<(ri-1)/2 .................(2)
Again in Koblitz the number of bit operations required to divide a k-bit positive integer by an l-bit positive integer (assuming k>=l) is given as: (k-l+1).l ...................(3)
By (1) and (2) the number of divisons is O(loga) and so by (3) the total complexity is O(loga)^3.
Now this may be reduced to O(loga)^2 by a remark in Koblitz.
consider ki= logri +1
by (1) and (2) we have: ki+1<=ki for i=0,1,...,m-2,m-1 and ki+2<=(ki)-1 for i=0,1,...,m-2
and by (3) the total cost of the m divisons is bounded by: SUM [(ki-1)-((ki)-1))]*ki for i=0,1,2,..,m
rearranging this: SUM [(ki-1)-((ki)-1))]*ki<=4*k0^2
So the bitwise complexity of Euclid's Algorithm is O(loga)^2.
argmax()
will only return the first occurrence for each row.
http://docs.scipy.org/doc/numpy/reference/generated/numpy.argmax.html
If you ever need to do this for a shaped array, this works better than unravel
:
import numpy as np
a = np.array([[1,2,3], [4,3,1]]) # Can be of any shape
indices = np.where(a == a.max())
You can also change your conditions:
indices = np.where(a >= 1.5)
The above gives you results in the form that you asked for. Alternatively, you can convert to a list of x,y coordinates by:
x_y_coords = zip(indices[0], indices[1])
Until the bug is fixed you could use Clear Cache Chrome plugin and you can also set a keyboard shortcut for it.
After installing it, right click and go to options:
Check Automatically reload active tab after clearing data
:
Select Everything
for Time Period:
And then you can go to Menu => Tools => Extensions:
Click on keyboard shortcuts at the bottom:
And set your keyboard shortcut, for example Ctrl + Shift +R:
I have started using IntelliJ IDEA Community Edition version 12.1.3 and I found the setting in the following place: -
File > Other Settings > Default Settings > {choose from Code Style dropdown}
onMeasure()
is your opportunity to tell Android how big you want your custom view to be dependent the layout constraints provided by the parent; it is also your custom view's opportunity to learn what those layout constraints are (in case you want to behave differently in a match_parent
situation than a wrap_content
situation). These constraints are packaged up into the MeasureSpec
values that are passed into the method. Here is a rough correlation of the mode values:
layout_width
or layout_height
value was set to a specific value. You should probably make your view this size. This can also get triggered when match_parent
is used, to set the size exactly to the parent view (this is layout dependent in the framework).layout_width
or layout_height
value was set to match_parent
or wrap_content
where a maximum size is needed (this is layout dependent in the framework), and the size of the parent dimension is the value. You should not be any larger than this size.layout_width
or layout_height
value was set to wrap_content
with no restrictions. You can be whatever size you would like. Some layouts also use this callback to figure out your desired size before determine what specs to actually pass you again in a second measure request.The contract that exists with onMeasure()
is that setMeasuredDimension()
MUST be called at the end with the size you would like the view to be. This method is called by all the framework implementations, including the default implementation found in View
, which is why it is safe to call super
instead if that fits your use case.
Granted, because the framework does apply a default implementation, it may not be necessary for you to override this method, but you may see clipping in cases where the view space is smaller than your content if you do not, and if you lay out your custom view with wrap_content
in both directions, your view may not show up at all because the framework doesn't know how large it is!
Generally, if you are overriding View
and not another existing widget, it is probably a good idea to provide an implementation, even if it is as simple as something like this:
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int desiredWidth = 100;
int desiredHeight = 100;
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
int width;
int height;
//Measure Width
if (widthMode == MeasureSpec.EXACTLY) {
//Must be this size
width = widthSize;
} else if (widthMode == MeasureSpec.AT_MOST) {
//Can't be bigger than...
width = Math.min(desiredWidth, widthSize);
} else {
//Be whatever you want
width = desiredWidth;
}
//Measure Height
if (heightMode == MeasureSpec.EXACTLY) {
//Must be this size
height = heightSize;
} else if (heightMode == MeasureSpec.AT_MOST) {
//Can't be bigger than...
height = Math.min(desiredHeight, heightSize);
} else {
//Be whatever you want
height = desiredHeight;
}
//MUST CALL THIS
setMeasuredDimension(width, height);
}
Hope that Helps.
Use cursor.lastrowid
to get the last row ID inserted on the cursor object, or connection.insert_id()
to get the ID from the last insert on that connection.
Why don't you create a new object right in the .Select
:
.Select(x => new PInfo{
ServerName = x.ServerName,
ProcessID = x.ProcessID,
UserName = x.Username }).ToList();
In your case you can use __FILE__
variable !
It should help.
It is one of predefined.
Read more about predefined constants in PHP http://php.net/manual/en/language.constants.predefined.php
forward
Control can be forward to resources available within the server from where the call is made. This transfer of control is done by the container internally and browser / client is not involved. This is the major difference between forward and sendRedirect. When the forward is done, the original request and response objects are transfered along with additional parameters if needed.
redirect
Control can be redirect to resources to different servers or domains. This transfer of control task is delegated to the browser by the container. That is, the redirect sends a header back to the browser / client. This header contains the resource url to be redirected by the browser. Then the browser initiates a new request to the given url. Since it is a new request, the old request and response object is lost.
For example, sendRedirect can transfer control from http://google.com to http://anydomain.com but forward cannot do this.
‘session’ is not lost in both forward and redirect.
To feel the difference between forward and sendRedirect visually see the address bar of your browser, in forward, you will not see the forwarded address (since the browser is not involved) in redirect, you can see the redirected address.
First you have to include the file you call:
#!/bin/bash
. includes/included_file.sh
then you call your function like this:
#!/bin/bash
my_called_function
AngularJS provides a simple and concise way to associate routes with controllers and templates using a $routeProvider
object. While recently updating an application to the latest release (1.2 RC1 at the current time) I realized that $routeProvider
isn’t available in the standard angular.js script any longer.
After reading through the change log I realized that routing is now a separate module (a great move I think) as well as animation and a few others. As a result, standard module definitions and config code like the following won’t work any longer if you’re moving to the 1.2 (or future) release:
var app = angular.module('customersApp', []);
app.config(function ($routeProvider) {
$routeProvider.when('/', {
controller: 'customersController',
templateUrl: '/app/views/customers.html'
});
});
How do you fix it?
Simply add angular-route.js in addition to angular.js to your page (grab a version of angular-route.js here – keep in mind it’s currently a release candidate version which will be updated) and change the module definition to look like the following:
var app = angular.module('customersApp', ['ngRoute']);
If you’re using animations you’ll need angular-animation.js and also need to reference the appropriate module:
var app = angular.module('customersApp', ['ngRoute', 'ngAnimate']);
Your Code can be as follows:
var app = angular.module('app', ['ngRoute']);
app.config(function($routeProvider) {
$routeProvider
.when('/controllerone', {
controller: 'friendDetails',
templateUrl: 'controller3.html'
}, {
controller: 'friendsName',
templateUrl: 'controller3.html'
}
)
.when('/controllerTwo', {
controller: 'simpleControoller',
templateUrl: 'views.html'
})
.when('/controllerThree', {
controller: 'simpleControoller',
templateUrl: 'view2.html'
})
.otherwise({
redirectTo: '/'
});
});
CLOCK_REALTIME
is affected by NTP, and can move forwards and backwards. CLOCK_MONOTONIC
is not, and advances at one tick per tick.
There is no such thing as :touch
in the W3C specifications, http://www.w3.org/TR/CSS2/selector.html#pseudo-class-selectors
:active
should work, I would think.
Order on the :active
/:hover
pseudo class is important for it to function correctly.
Here is a quote from that above link
Interactive user agents sometimes change the rendering in response to user actions. CSS provides three pseudo-classes for common cases:
- The :hover pseudo-class applies while the user designates an element (with some pointing device), but does not activate it. For example, a visual user agent could apply this pseudo-class when the cursor (mouse pointer) hovers over a box generated by the element. User agents not supporting interactive media do not have to support this pseudo-class. Some conforming user agents supporting interactive media may not be able to support this pseudo-class (e.g., a pen device).
- The :active pseudo-class applies while an element is being activated by the user. For example, between the times the user presses the mouse button and releases it.
- The :focus pseudo-class applies while an element has the focus (accepts keyboard events or other forms of text input).
If you have msi installer open it with Orca (tool from Microsoft), table Property (rows UpgradeCode, ProductCode, Product version etc) or table Upgrade column Upgrade Code.
Try to find instller via registry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall find required subkey and watch value InstallSource. Maybe along the way you'll be able to find the MSI file.
A good bet is to utilize Rails' Arel SQL manager, which explicitly supports case-insensitive ActiveRecord queries:
t = Guide.arel_table Guide.where(t[:title].matches('%attack'))
Here's an interesting blog post regarding the portability of case-insensitive queries using Arel. It's worth a read to understand the implications of utilizing Arel across databases.
Write the table name in the query editor select the name and press Alt+F1 and it will bring all the information of the table.
In MainActivity
private static android.support.v4.app.FragmentManager fragmentManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
fragmentManager = getSupportFragmentManager();
}
public void secondFragment() {
fragmentManager
.beginTransaction()
.setCustomAnimations(R.anim.right_enter, R.anim.left_out)
.replace(R.id.frameContainer, new secondFragment(), "secondFragmentTag").addToBackStack(null)
.commit();
}
In FirstFragment call SecondFrgment Like this:
new MainActivity().secondFragment();
Planetwars is a game specifically written for Google Ai Contest, bots are controlling fleets for conquering planets, they support many languages
I don't know why can't I add a comment to a previous answer (maybe I'm hopelessly blind, I don't know), but I came up with a solution using @Miguel's answer:
function precise_round(num,decimals) {
return Math.round(num*Math.pow(10, decimals)) / Math.pow(10, decimals);
}
And its two comments (from @bighostkim and @Imre):
precise_round(1.275,2)
not returning 1.28precise_round(6,2)
not returning 6.00 (as he wanted).My final solution is as follows:
function precise_round(num,decimals) {
var sign = num >= 0 ? 1 : -1;
return (Math.round((num*Math.pow(10,decimals)) + (sign*0.001)) / Math.pow(10,decimals)).toFixed(decimals);
}
As you can see I had to add a little bit of "correction" (it's not what it is, but since Math.round is lossy - you can check it on jsfiddle.net - this is the only way I knew how to "fix" it). It adds 0.001 to the already padded number, so it is adding a 1
three 0
s to the right of the decimal value. So it should be safe to use.
After that I added .toFixed(decimal)
to always output the number in the correct format (with the right amount of decimals).
So that's pretty much it. Use it well ;)
EDIT: added functionality to the "correction" of negative numbers.
In fact in the last answer String strAsciiTab = Character.toString((char) iAsciiValue); the essential part is (char)iAsciiValue which is doing the job (Character.toString useless)
Meaning the first answer was correct actually char ch = (char) yourInt;
if in yourint=49 (or 0x31), ch will be '1'
Here is another simple implementation -
/**
* Date range
*
* @param $first
* @param $last
* @param string $step
* @param string $format
* @return array
*/
function dateRange( $first, $last, $step = '+1 day', $format = 'Y-m-d' ) {
$dates = [];
$current = strtotime( $first );
$last = strtotime( $last );
while( $current <= $last ) {
$dates[] = date( $format, $current );
$current = strtotime( $step, $current );
}
return $dates;
}
Example:
print_r( dateRange( '2010-07-26', '2010-08-05') );
Array (
[0] => 2010-07-26
[1] => 2010-07-27
[2] => 2010-07-28
[3] => 2010-07-29
[4] => 2010-07-30
[5] => 2010-07-31
[6] => 2010-08-01
[7] => 2010-08-02
[8] => 2010-08-03
[9] => 2010-08-04
[10] => 2010-08-05
)
If you're new to the library, consider double-checking whether the functionality you need is already offered by those Pandas objects.
My solution: use to_dict()
dict_of_lists = df.to_dict(orient='split')
This will give you a dictionary with three lists: index
, columns
, data
. If you decide you really don't need the columns and index names, you get the data with
dict_of_lists['data']
In my case I had created a SB app from the SB Initializer and had included a fair number of deps in it to other things. I went in and commented out the refs to them in the build.gradle file and so was left with:
implementation 'org.springframework.boot:spring-boot-starter-hateoas'
compileOnly 'org.projectlombok:lombok'
developmentOnly 'org.springframework.boot:spring-boot-devtools'
runtimeOnly 'org.hsqldb:hsqldb'
runtimeOnly 'org.postgresql:postgresql'
annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
annotationProcessor 'org.projectlombok:lombok'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
testImplementation 'org.springframework.restdocs:spring-restdocs-mockmvc'
as deps. Then my bare-bones SB app was able to build and get running successfully. As I go to try to do things that may need those commented-out libs I will add them back and see what breaks.
tl;dr — There's a summary at the end and headings in the answer to make it easier to find the relevant parts. Reading everything is recommended though as it provides useful background for understanding the why that makes seeing how the how applies in different circumstances easier.
This is the Same Origin Policy. It is a security feature implemented by browsers.
Your particular case is showing how it is implemented for XMLHttpRequest (and you'll get identical results if you were to use fetch), but it also applies to other things (such as images loaded onto a <canvas>
or documents loaded into an <iframe>
), just with slightly different implementations.
(Weirdly, it also applies to CSS fonts, but that is because found foundries insisted on DRM and not for the security issues that the Same Origin Policy usually covers).
The standard scenario that demonstrates the need for the SOP can be demonstrated with three characters:
https://www.[website].com/
in your example)http://localhost:4300
in your example)Alice is logged into Bob's site and has some confidential data there. Perhaps it is a company intranet (accessible only to browsers on the LAN), or her online banking (accessible only with a cookie you get after entering a username and password).
Alice visits Mallory's website which has some JavaScript that causes Alice's browser to make an HTTP request to Bob's website (from her IP address with her cookies, etc). This could be as simple as using XMLHttpRequest
and reading the responseText
.
The browser's Same Origin Policy prevents that JavaScript from reading the data returned by Bob's website (which Bob and Alice don't want Mallory to access). (Note that you can, for example, display an image using an <img>
element across origins because the content of the image is not exposed to JavaScript (or Mallory) … unless you throw canvas into the mix in which case you will generate a same-origin violation error).
For any given URL it is possible that the SOP is not needed. A couple of common scenarios where this is the case are:
… but the browser has no way of knowing if either of the above are true, so trust is not automatic and the SOP is applied. Permission has to be granted explicitly before the browser will give the data it was given to a different website.
Browser extensions*
, the Network tab in browser developer tools and applications like Postman are installed software. They aren't passing data from one website to the JavaScript belonging to a different website just because you visited that different website. Installing software usually takes a more conscious choice.
There isn't a third party (Mallory) who is considered a risk.
*
Browser extensions do need to be written carefully to avoid cross-origin issues. See the Chrome documentation for example.
There are a number of circumstances where Mallory's site can cause a browser to fetch data from a third party and display it (e.g. by adding an <img>
element to display an image). It isn't possible for Mallory's JavaScript to read the data in that resource though, only Alice's browser and Bob's server can do that, so it is still secure.
The Access-Control-Allow-Origin
HTTP response header referred to in the error message is part of the CORS standard which allows Bob to explicitly grant permission to Mallory's site to access the data via Alice's browser.
A basic implementation would just include:
Access-Control-Allow-Origin: *
… in the response headers to permit any website to read the data.
Access-Control-Allow-Origin: http://example.com/
… would allow only a specific site to access it, and Bob can dynamically generate that based on the Origin
request header to permit multiple, but not all, sites to access it.
The specifics of how Bob sets that response header depend on Bob's HTTP server and/or server-side programming language. There is a collection of guides for various common configurations that might help.
NB: Some requests are complex and send a preflight OPTIONS request that the server will have to respond to before the browser will send the GET/POST/PUT/Whatever request that the JS wants to make. Implementations of CORS that only add Access-Control-Allow-Origin
to specific URLs often get tripped up by this.
Obviously granting permission via CORS is something Bob would only do only if either:
There is no standard mechanism for Mallory to add this header because it has to come from Bob's website, which she does not control.
If Bob is running a public API then there might be a mechanism to turn on CORS (perhaps by formatting the request in a certain way, or a config option after logging into a Developer Portal site for Bob's site). This will have to be a mechanism implemented by Bob though. Mallory could read the documentation on Bob's site to see if something is available, or she could talk to Bob and ask him to implement CORS.
Some cross origin requests are preflighted.
This happens when (roughly speaking) you try to make a cross-origin request that:
enctype
).In these cases then the rest of this answer still applies but you also need to make sure that the server can listen for the preflight request (which will be OPTIONS
(and not GET
, POST
or whatever you were trying to send) and respond to it with the right Access-Control-Allow-Origin
header but also Access-Control-Allow-Methods
and Access-Control-Allow-Headers
to allow your specific HTTP methods or headers.
Sometimes people make mistakes when trying to construct Ajax requests, and sometimes these trigger the need for a preflight. If the API is designed to allow cross-origin requests, but doesn't require anything that would need a preflight, then this can break access.
Common mistakes that trigger this include:
Access-Control-Allow-Origin
and other CORS response headers on the request. These don't belong on the request, don't do anything helpful (what would be the point of a permissions system where you could grant yourself permission?), and must appear only on the response.Content-Type: application/json
header on a GET request that has no request body to describe the content of (typically when the author confuses Content-Type
and Accept
).In either of these cases, removing the extra request header will often be enough to avoid the need for a preflight (which will solve the problem when communicating with APIs that support simple requests but not preflighted requests).
Sometimes you need to make an HTTP request, but you don't need to read the response. e.g. if you are posting a log message to the server for recording.
If you are using the fetch
API (rather than XMLHttpRequest
), then you can configure it to not try to use CORS.
Note that this won't let you do anything that you require CORS to do. You will not be able to read the response. You will not be able to make a request that requires a preflight.
It will let you make a simple request, not see the response, and not fill the Developer Console with error messages.
How to do it is explained by the Chrome error message given when you make a request using fetch
and don't get permission to view the response with CORS:
Access to fetch at '
https://example.com/
' from origin 'https://example.net
' has been blocked by CORS policy: No 'Access-Control-Allow-Origin
' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
Thus:
fetch("http://example.com", { mode: "no-cors" });
Bob could also provide the data using a hack like JSONP which is how people did cross-origin Ajax before CORS came along.
It works by presenting the data in the form of a JavaScript program which injects the data into Mallory's page.
It requires that Mallory trust Bob not to provide malicious code.
Note the common theme: The site providing the data has to tell the browser that it is OK for a third party site to access the data it is sending to the browser.
Since JSONP works by appending a <script>
element to load the data in the form of a JavaScript program which calls a function already in the page, attempting to use the JSONP technique on a URL which returns JSON will fail — typically with a CORB error — because JSON is not JavaScript.
If the HTML document the JS runs in and the URL being requested are on the same origin (sharing the same scheme, hostname, and port) then they Same Origin Policy grants permission by default. CORS is not needed.
Mallory could use server-side code to fetch the data (which she could then pass from her server to Alice's browser through HTTP as usual).
It will either:
That server-side code could be written & hosted by a third party (such as CORS Anywhere). Note the privacy implications of this: The third party can monitor who proxies what across their servers.
Bob wouldn't need to grant any permissions for that to happen.
There are no security implications here since that is just between Mallory and Bob. There is no way for Bob to think that Mallory is Alice and to provide Mallory with data that should be kept confidential between Alice and Bob.
Consequently, Mallory can only use this technique to read public data.
Do note, however, that taking content from someone else's website and displaying it on your own might be a violation of copyright and open you up to legal action.
As noted in the section "Why the Same Origin Policy only applies to JavaScript in a web page", you can avoid the SOP by not writing JavaScript in a webpage.
That doesn't mean you can't continue to use JavaScript and HTML, but you could distribute it using some other mechanism, such as Node-WebKit or PhoneGap.
It is possible for a browser extension to inject the CORS headers in the response before the Same Origin Policy is applied.
These can be useful for development, but are not practical for a production site (asking every user of your site to install a browser extension that disables a security feature of their browser is unreasonable).
They also tend to work only with simple requests (failing when handling preflight OPTIONS requests).
Having a proper development environment with a local development server is usually a better approach.
Note that SOP / CORS do not mitigate XSS, CSRF, or SQL Injection attacks which need to be handled independently.
One of the fundamental principles behind a promise is that it's handled asynchronously. This means that you cannot create a promise and then immediately use its result synchronously in your code (e.g. it's not possible to return the result of a promise from within the function that initiated the promise).
What you likely want to do instead is to return the entire promise itself. Then whatever function needs its result can call .then()
on the promise, and the result will be there when the promise has been resolved.
Here is a resource from HTML5Rocks that goes over the lifecycle of a promise, and how its output is resolved asynchronously:
http://www.html5rocks.com/en/tutorials/es6/promises/
Tim Stone's solution is on the right track, but his initial rewriterule and and his cookie name in the final condition are different, and you can not write and read a cookie in the same request.
Here is the finalized working code:
RewriteEngine on
RewriteBase /
# Check if this is the noredirect query string
RewriteCond %{QUERY_STRING} (^|&)m=0(&|$)
# Set a cookie, and skip the next rule
RewriteRule ^ - [CO=mredir:0:www.website.com]
# Check if this looks like a mobile device
# (You could add another [OR] to the second one and add in what you
# had to check, but I believe most mobile devices should send at
# least one of these headers)
RewriteCond %{HTTP:x-wap-profile} !^$ [OR]
RewriteCond %{HTTP:Profile} !^$ [OR]
RewriteCond %{HTTP_USER_AGENT} "acs|alav|alca|amoi|audi|aste|avan|benq|bird|blac|blaz|brew|cell|cldc|cmd-" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "dang|doco|eric|hipt|inno|ipaq|java|jigs|kddi|keji|leno|lg-c|lg-d|lg-g|lge-" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "maui|maxo|midp|mits|mmef|mobi|mot-|moto|mwbp|nec-|newt|noki|opwv" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "palm|pana|pant|pdxg|phil|play|pluc|port|prox|qtek|qwap|sage|sams|sany" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "sch-|sec-|send|seri|sgh-|shar|sie-|siem|smal|smar|sony|sph-|symb|t-mo" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "teli|tim-|tosh|tsm-|upg1|upsi|vk-v|voda|w3cs|wap-|wapa|wapi" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "wapp|wapr|webc|winw|winw|xda|xda-" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "up.browser|up.link|windowssce|iemobile|mini|mmp" [NC,OR]
RewriteCond %{HTTP_USER_AGENT} "symbian|midp|wap|phone|pocket|mobile|pda|psp" [NC]
RewriteCond %{HTTP_USER_AGENT} !macintosh [NC]
# Check if we're not already on the mobile site
RewriteCond %{HTTP_HOST} !^m\.
# Can not read and write cookie in same request, must duplicate condition
RewriteCond %{QUERY_STRING} !(^|&)m=0(&|$)
# Check to make sure we haven't set the cookie before
RewriteCond %{HTTP_COOKIE} !^.*mredir=0.*$ [NC]
# Now redirect to the mobile site
RewriteRule ^ http://m.website.com [R,L]
For simple types you can use "IndexOf" :
List<string> arr = new List<string>();
arr.Add("aaa");
arr.Add("bbb");
arr.Add("ccc");
int i = arr.IndexOf("bbb"); // RETURNS 1.
I solved this by using the DropDownClosed event because this fires slightly after the value is changed.
In tomcat 8.5 pay attention to write the correct name of attributes. This is my code on server.xml:
<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
maxThreads="150" SSLEnabled="true">
<SSLHostConfig>
<Certificate certificateKeystoreFile="conf/keystore" certificateKeystorePassword="mypassword" type="RSA"/>
</SSLHostConfig>
</Connector>
You can visit https://tomcat.apache.org/tomcat-8.5-doc/config/http.html to see all attributes
I know this is an old thread, but because people can still look this up and rely on it, it seems important to point out that lock(typeof(SomeObject))
is significantly worse than lock(this)
. Having said that; sincere kudos to Alan for pointing out that lock(typeof(SomeObject))
is bad practice.
An instance of System.Type
is one of the most generic, coarse-grained objects there is. At the very least, an instance of System.Type is global to an AppDomain, and .NET can run multiple programs in an AppDomain. This means that two entirely different programs could potentially cause interference in one another even to the extent of creating a deadlock if they both try to get a synchronization lock on the same type instance.
So lock(this)
isn't particularly robust form, can cause problems and should always raise eyebrows for all the reasons cited. Yet there is widely used, relatively well-respected and apparently stable code like log4net that uses the lock(this) pattern extensively, even though I would personally prefer to see that pattern change.
But lock(typeof(SomeObject))
opens up a whole new and enhanced can of worms.
For what it's worth.
Double check the exact URL you're providing. I saw this error when I missed off the route prefix defined in ASP.NET so it didn't know where to route the request.
There can be multiple root causes for this exception. For me, my mockMvc wasn't getting auto-configured. I solved this exception by using @WebMvcTest(MyController.class)
at the class level. This annotation will disable full auto-configuration and instead apply only configuration relevant to MVC tests.
An alternative to this is, If you are looking to load your full application configuration and use MockMVC, you should consider @SpringBootTest
combined with @AutoConfigureMockMvc
rather than @WebMvcTest
The FileNameExtensionFilter
class is intended for Swing to be used in a JFileChooser
.
Try using a FilenameFilter
instead. For example:
File dir = new File("/users/blah/dirname");
File[] files = dir.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.toLowerCase().endsWith(".txt");
}
});
By wrapping your comparisons in {}
in your first example you are creating ScriptBlocks; so the PowerShell interpreter views it as Where-Object { <ScriptBlock> -and <ScriptBlock> }
. Since the -and
operator operates on boolean values, PowerShell casts the ScriptBlocks to boolean values. In PowerShell anything that is not empty, zero or null is true. The statement then looks like Where-Object { $true -and $true }
which is always true.
Instead of using {}
, use parentheses ()
.
Also you want to use -eq
instead of -match
since match uses regex and will be true if the pattern is found anywhere in the string (try: 'xlsx' -match 'xls'
).
Invoke-Command -computername SERVERNAME {
Get-ChildItem -path E:\dfsroots\datastore2\public |
Where-Object {($_.extension -eq ".xls" -or $_.extension -eq ".xlk") -and ($_.creationtime -ge "06/01/2014")}
}
A better option is to filter the extensions at the Get-ChildItem
command.
Invoke-Command -computername SERVERNAME {
Get-ChildItem -path E:\dfsroots\datastore2\public\* -Include *.xls, *.xlk |
Where-Object {$_.creationtime -ge "06/01/2014"}
}
I had this problem today using any of concat, append or merge, and I got around it by adding a helper column sequentially numbered and then doing an outer join
helper=1
for i in df1.index:
df1.loc[i,'helper']=helper
helper=helper+1
for i in df2.index:
df2.loc[i,'helper']=helper
helper=helper+1
df1.merge(df2,on='helper',how='outer')
I've used a few CSS hacks and targeted Chrome/Safari/Firefox/IE individually, as each browser renders selects a bit differently. I've tested on all browsers except IE.
For Safari/Chrome, set the height
and line-height
you want for your <select />
.
For Firefox, we're going to kill Firefox's default padding and border, then set our own. Set padding to whatever you like.
For IE 8+, just like Chrome, we've set the height
and line-height
properties. These two media queries
can be combined. But I kept it separate for demo purposes. So you can see what I'm doing.
Please note, for the height/line-height
property to work in Chrome/Safari OSX, you must set the background
to a custom value. I changed the color in my example.
Here's a jsFiddle of the below: http://jsfiddle.net/URgCB/4/
For the non-hack route, why not use a custom select plug-in via jQuery? Check out this: http://codepen.io/wallaceerick/pen/ctsCz
HTML:
<select>
<option>Here's one option</option>
<option>here's another option</option>
</select>
CSS:
@media screen and (-webkit-min-device-pixel-ratio:0) { /*safari and chrome*/
select {
height:30px;
line-height:30px;
background:#f4f4f4;
}
}
select::-moz-focus-inner { /*Remove button padding in FF*/
border: 0;
padding: 0;
}
@-moz-document url-prefix() { /* targets Firefox only */
select {
padding: 15px 0!important;
}
}
@media screen\0 { /* IE Hacks: targets IE 8, 9 and 10 */
select {
height:30px;
line-height:30px;
}
}
Stop using the TEXT
data type in SQL Server!
It's been deprecated since the 2005 version. Use VARCHAR(MAX)
instead, if you need more than 8000 characters.
The TEXT
data type doesn't support the normal string functions, while VARCHAR(MAX)
does - your statement would work just fine, if you'd be using just VARCHAR types.
I performed tests on Eclipse vs Netbeans 8.0.2, both with Java version 1.8;
I used System.nanoTime()
for measurements.
I got the same time on both cases - around 1.564 seconds.
So, it looks like Netbeans has bad performance on print to console.
After more research I realized that the problem is line-wrapping of the max buffer of Netbeans (it's not restricted to System.out.println
command), demonstrated by this code:
for (int i = 0; i < 1000; i++) {
long t1 = System.nanoTime();
System.out.print("BBB......BBB"); \\<-contain 1000 "B"
long t2 = System.nanoTime();
System.out.println(t2-t1);
System.out.println("");
}
The time results are less then 1 millisecond every iteration except every fifth iteration, when the time result is around 225 millisecond. Something like (in nanoseconds):
BBB...31744
BBB...31744
BBB...31744
BBB...31744
BBB...226365807
BBB...31744
BBB...31744
BBB...31744
BBB...31744
BBB...226365807
.
.
.
And so on..
I ran into this problem and inspired by @Jeremy Cook's answer, I bit the bullet to find out what the heck caused IIS 7 Integrated mode to not like my web.config. Here's my scenario:
I wanted to use attribute routing in a project that (unfortunately) had to use .NET 4 and hence could not use Web API 2.2 (which needs .NET 4.5). The well meaning NuGet package added this section under the <system.web>
section:
<system.web>
<httpHandlers>
<add verb="*" path="routes.axd" type="AttributeRouting.Web.Logging.LogRoutesHandler, AttributeRouting.Web" />
</httpHandlers>
</system.web>
[I say well meaning, because this part is required on older versions of IIS]
Removing this section got me past the HTTP 500.23!!
Summary: I second Jeremy's words that it is important to understand why things don't work rather than just "masking the symptom". Even if you have to mask the symptom, you know what you are doing (and why) :-)
The dojo
example here do not work when applied to existing code in most cases. Therefor I had to find an alternate, found here - hxxp://technologymantrablog.com/how-to-create-a-combo-box-with-text-input-jquery-autocomplete/ (now points to a spam site or worse)
archive.org (not very useful)
Here is the jsfiddle - https://jsfiddle.net/ze7fgby7/
Solution based on Tonys answer:
DataGrid dg = sender as DataGrid;
User row = (User)dg.SelectedItems[0];
Console.WriteLine(row.UserID);
If you are extending from an AppCompatActivity and are trying to get the ActionBar from the Fragment, you can do this:
ActionBar mActionBar = ((AppCompatActivity) getActivity()).getSupportActionBar();
Here is a specific scenario that warrants a specialized approach:
Dictionary
is enumerated frequently.Dictionary
is modified infrequently.In this scenario creating a copy of the Dictionary
(or the Dictionary.Values
) before every enumeration can be quite costly. My idea about solving this problem is to reuse the same cached copy in multiple enumerations, and watch an IEnumerator
of the original Dictionary
for exceptions. The enumerator will be cached along with the copied data, and interrogated before starting a new enumeration. In case of an exception the cached copy will be discarded, and a new one will be created. Here is my implementation of this idea:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
public class EnumerableSnapshot<T> : IEnumerable<T>, IDisposable
{
private IEnumerable<T> _source;
private IEnumerator<T> _enumerator;
private ReadOnlyCollection<T> _cached;
public EnumerableSnapshot(IEnumerable<T> source)
{
_source = source ?? throw new ArgumentNullException(nameof(source));
}
public IEnumerator<T> GetEnumerator()
{
if (_source == null) throw new ObjectDisposedException(this.GetType().Name);
if (_enumerator == null)
{
_enumerator = _source.GetEnumerator();
_cached = new ReadOnlyCollection<T>(_source.ToArray());
}
else
{
var modified = false;
if (_source is ICollection collection) // C# 7 syntax
{
modified = _cached.Count != collection.Count;
}
if (!modified)
{
try
{
_enumerator.MoveNext();
}
catch (InvalidOperationException)
{
modified = true;
}
}
if (modified)
{
_enumerator.Dispose();
_enumerator = _source.GetEnumerator();
_cached = new ReadOnlyCollection<T>(_source.ToArray());
}
}
return _cached.GetEnumerator();
}
public void Dispose()
{
_enumerator?.Dispose();
_enumerator = null;
_cached = null;
_source = null;
}
IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
}
public static class EnumerableSnapshotExtensions
{
public static EnumerableSnapshot<T> ToEnumerableSnapshot<T>(
this IEnumerable<T> source) => new EnumerableSnapshot<T>(source);
}
Usage example:
private static IDictionary<Guid, Subscriber> _subscribers;
private static EnumerableSnapshot<Subscriber> _subscribersSnapshot;
//...(in the constructor)
_subscribers = new Dictionary<Guid, Subscriber>();
_subscribersSnapshot = _subscribers.Values.ToEnumerableSnapshot();
// ...(elsewere)
foreach (var subscriber in _subscribersSnapshot)
{
//...
}
Unfortunately this idea cannot be used currently with the class Dictionary
in .NET Core 3.0, because this class does not throw a Collection was modified exception when enumerated and the methods Remove
and Clear
are invoked. All other containers I checked are behaving consistently. I checked systematically these classes:
List<T>
, Collection<T>
, ObservableCollection<T>
, HashSet<T>
, SortedSet<T>
, Dictionary<T,V>
and SortedDictionary<T,V>
. Only the two aforementioned methods of the Dictionary
class in .NET Core are not invalidating the enumeration.
Update: I fixed the above problem by comparing also the lengths of the cached and the original collection. This fix assumes that the dictionary will be passed directly as an argument to the EnumerableSnapshot
's constructor, and its identity will not be hidden by (for example) a projection like: dictionary.Select(e => e).??EnumerableSnapshot()
.
Important: The above class is not thread safe. It is intended to be used from code running exclusively in a single thread.
Few ways of declaring a typed array in TypeScript
are
const booleans: Array<boolean> = new Array<boolean>();
// OR, JS like type and initialization
const booleans: boolean[] = [];
// or, if you have values to initialize
const booleans: Array<boolean> = [true, false, true];
// get a vaue from that array normally
const valFalse = booleans[1];
You can use this JavaScript function. Here you can display Redirection message to the user and redirected to the given URL.
<script type="text/javascript">
function Redirect()
{
window.location="http://www.newpage.com";
}
document.write("You will be redirected to a new page in 5 seconds");
setTimeout('Redirect()', 5000);
</script>
You can also create an array of boolean of the size last_element_in_the_existing_array + 1
.
In a for
loop mark all the element true
that are present in the existing array.
In another for
loop print the index of the elements which contains false
AKA The missing ones.
Time Complexity: O(last_element_in_the_existing_array)
Space Complexity: O(array.length)
you should change cr_date(str) to datetime object then you 'll change the date to the specific format:
cr_date = '2013-10-31 18:23:29.000227'
cr_date = datetime.datetime.strptime(cr_date, '%Y-%m-%d %H:%M:%S.%f')
cr_date = cr_date.strftime("%m/%d/%Y")
I have a few suggestions:
spark.executor.memory=6g
. Make sure you're using as much memory as possible by checking the UI (it will say how much mem you're using)spark.storage.memoryFraction
. If you don't use cache()
or persist
in your code, this might as well be 0. It's default is 0.6, which means you only get 0.4 * 4g memory for your heap. IME reducing the mem frac often makes OOMs go away. UPDATE: From spark 1.6 apparently we will no longer need to play with these values, spark will determine them automatically.String
and heavily nested structures (like Map
and nested case classes). If possible try to only use primitive types and index all non-primitives especially if you expect a lot of duplicates. Choose WrappedArray
over nested structures whenever possible. Or even roll out your own serialisation - YOU will have the most information regarding how to efficiently back your data into bytes, USE IT!Dataset
to cache your structure as it will use more efficient serialisation. This should be regarded as a hack when compared to the previous bullet point. Building your domain knowledge into your algo/serialisation can minimise memory/cache-space by 100x or 1000x, whereas all a Dataset
will likely give is 2x - 5x in memory and 10x compressed (parquet) on disk.http://spark.apache.org/docs/1.2.1/configuration.html
EDIT: (So I can google myself easier) The following is also indicative of this problem:
java.lang.OutOfMemoryError : GC overhead limit exceeded
LivingRoom.objects.create()
calls LivingRoom.__init__()
- as you might have noticed if you had read the traceback - passing it the same arguments. To make a long story short, a Django models.Model
subclass's initializer is best left alone, or should accept *args and **kwargs matching the model's meta fields. The correct way to provide default values for fields is in the field constructor using the default
keyword as explained in the FineManual.
It was particular for me. I am sending a header named 'SESSIONHASH'. No problem for Chrome and Opera, but Firefox also wants this header in the list "Access-Control-Allow-Headers". Otherwise, Firefox will throw the CORS error.
With Bootstrap 4, the responsible css configuration in bootstrap.css
for .table-striped
is:
.table-striped tbody tr:nth-of-type(odd) {
background-color: rgba(0, 0, 0, 0.05);
}
For a very simple solution, I just copied it into my custom.css
file, and changed the values of background-color
, so that now I have a fancier light blue shade:
.table-striped tbody tr:nth-of-type(odd) {
background-color: rgba(72, 113, 248, 0.068);
}
Ned Batchelder has posted a short script that will unmarshal a .pyc file and disassemble any code objects within, so you'll be able to see the Python bytecode.
It looks like with newer versions of Python, you'll need to comment out the lines that set modtime
and print it (but don't comment the line that sets moddate
).
Turning that back into Python source would be somewhat more difficult, although theoretically possible. I assume all these programs that work for older versions of Python do that.
Changing pool from ASP.NET v4.0
to Framework4
worked for me.
The following three steps are used to fix Running Scripts is disabled on this System error
Step1 : To fix this kind of problem, we have to start power shell in administrator mode.
Step2 : Type the following command set-ExecutionPolicy RemoteSigned Step3: Press Y for your Confirmation.
Visit the following for more information https://youtu.be/J_596H-sWsk
When calling the function, follow it by return false
example:
<input type="submit" value="Add" onclick="addNewPayment();return false;">
Pass the data like this to the ajax call (http://api.jquery.com/jQuery.ajax/):
data: { userID : userID }
And in your PHP do this:
if(isset($_POST['userID']))
{
$uid = $_POST['userID'];
// Do whatever you want with the $uid
}
isset()
function's purpose is to check wheter the given variable exists, not to get its value.
After upgrading react-native, you may have stale dependencies. The steps below should fix it.
cd ios
pod deintegrate && pod install
react-native run-ios
Hope this helps, I did this after upgrading to react-native 0.61
You can use String.Join
. If you have a List<string>
then you can call ToArray
first:
List<string> names = new List<string>() { "John", "Anna", "Monica" };
var result = String.Join(", ", names.ToArray());
In .NET 4 you don't need the ToArray
anymore, since there is an overload of String.Join
that takes an IEnumerable<string>
.
Results:
John, Anna, Monica
You can also use JTattoo (http://www.jtattoo.net/), it has a couple of cool themes that can be used.
Just download the jar and import it into your classpath, or add it as a maven dependency:
<dependency>
<groupId>com.jtattoo</groupId>
<artifactId>JTattoo</artifactId>
<version>1.6.11</version>
</dependency>
Here is a list of some of the cool themes they have available:
Regards
You should assign string value to environment variable.
os.environ["DEBUSSY"] = "1"
If you want to read or print the environment variable just use
print os.environ["DEBUSSY"]
This changes will be effective only for the current process where it was assigned, it will no change the value permanently. The child processes will automatically inherit the environment of the parent process.
Xcode 8 and Swift 3.0
Using URLSession:
let url = URL(string:"Download URL")!
let req = NSMutableURLRequest(url:url)
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config, delegate: self, delegateQueue: OperationQueue.main)
let task : URLSessionDownloadTask = session.downloadTask(with: req as URLRequest)
task.resume()
URLSession Delegate call:
func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
}
func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask,
didWriteData bytesWritten: Int64, totalBytesWritten writ: Int64, totalBytesExpectedToWrite exp: Int64) {
print("downloaded \(100*writ/exp)" as AnyObject)
}
func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL){
}
Using Block GET/POST/PUT/DELETE:
let request = NSMutableURLRequest(url: URL(string: "Your API URL here" ,param: param))!,
cachePolicy: .useProtocolCachePolicy,
timeoutInterval:"Your request timeout time in Seconds")
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers as? [String : String]
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest) {data,response,error in
let httpResponse = response as? HTTPURLResponse
if (error != nil) {
print(error)
} else {
print(httpResponse)
}
DispatchQueue.main.async {
//Update your UI here
}
}
dataTask.resume()
Working fine for me.. try it 100% result guarantee
Though they operate the same way, however, the mouseenter
event only triggers when the mouse pointer enters the selected element. The mouseover
event is triggered if a mouse pointer enters any child elements as well.
In my case Anaconda3 was not installed in home directory. Instead, it was installed in root. Therefore, I had to do the following to get it uninstalled:
sudo rm -rf /anaconda3/bin/python
Unfortunately, the file must be locked for updates unless you're using Office 2010 and SharePoint 2010 together. This means that only one user per time can edit a file. The locking and version tracking capabilities of SharePoint are excellent, and this makes it a great tool for the type of collaboration you're talking about, but you would have to split documents into multiple files in order to extend the amount that could be edited at a time. For instance, we sometimes unmerge documents into technical, requirements, and financials sections so that the 3 experts required for the review can work concurrently. We then merge when everyone is finished.
To revert a merge commit, you need to use: git revert -m <parent number>
. So for example, to revert the recent most merge commit using the parent with number 1 you would use:
git revert -m 1 HEAD
To revert a merge commit before the last commit, you would do:
git revert -m 1 HEAD^
Use git show <merge commit SHA1>
to see the parents, the numbering is the order they appear e.g. Merge: e4c54b3 4725ad2
git merge documentation: http://schacon.github.com/git/git-merge.html
git merge discussion (confusing but very detailed): http://schacon.github.com/git/howto/revert-a-faulty-merge.txt
Use str.split()
:
>>> "42 0".split() # or .split(" ")
['42', '0']
Note that str.split(" ")
is identical in this case, but would behave differently if there were more than one space in a row. As well, .split()
splits on all whitespace, not just spaces.
Using map
usually looks cleaner than using list comprehensions when you want to convert the items of iterables to built-ins like int
, float
, str
, etc. In Python 2:
>>> map(int, "42 0".split())
[42, 0]
In Python 3, map
will return a lazy object. You can get it into a list with list()
:
>>> map(int, "42 0".split())
<map object at 0x7f92e07f8940>
>>> list(map(int, "42 0".split()))
[42, 0]
You can override the default implementation of console.log()
(function () {
var old = console.log;
var logger = document.getElementById('log');
console.log = function (message) {
if (typeof message == 'object') {
logger.innerHTML += (JSON && JSON.stringify ? JSON.stringify(message) : message) + '<br />';
} else {
logger.innerHTML += message + '<br />';
}
}
})();
Demo: Fiddle
I made this macro for rounding float numbers. Add it in your header / being of file
#define ROUNDF(f, c) (((float)((int)((f) * (c))) / (c)))
Here is an example:
float x = ROUNDF(3.141592, 100)
x equals 3.14 :)
You can add an event listener with 'ended' as first param
Like this :
<video src="video.ogv" id="myVideo">
video not supported
</video>
<script type='text/javascript'>
document.getElementById('myVideo').addEventListener('ended',myHandler,false);
function myHandler(e) {
// What you want to do after the event
}
</script>
There is a better way to do this now. You can use the bottom property.
.my-element {
position: absolute;
bottom: 30px;
}
Simple. The GNU time
utility has an option for that.
But you have to ensure that you are not using your shell's builtin time
command, at least the bash
builtin does not provide that option! That's why you need to give the full path of the time
utility:
/usr/bin/time -o time.txt sleep 1