Agree with Gray, as you may need your pattern to have both litrals (\[, \]) and meta-characters ([, ]). so with some utility you should be able to escape all character first and then you can add meta-characters you want to add on same pattern.
The flex solutions worked for me as far as making the footer sticky, but unfortunately changing the body to use flex layout made some of our page layouts change, and not for the better. What finally worked for me was:
jQuery(document).ready(function() {
var fht = jQuery('footer').outerHeight(true);
jQuery('main').css('min-height', "calc(92vh - " + fht + "px)");
});
I got this from ctf0's response at https://css-tricks.com/couple-takes-sticky-footer/
After importing the scripting runtime as described above you have to make some slighty modification to get it working in Excel 2010 (my version). Into the following code I've also add the code used to the user to pick a file.
Dim intChoice As Integer
Dim strPath As String
' Select one file
Application.FileDialog(msoFileDialogOpen).AllowMultiSelect = False
' Show the selection window
intChoice = Application.FileDialog(msoFileDialogOpen).Show
' Get back the user option
If intChoice <> 0 Then
strPath = Application.FileDialog(msoFileDialogOpen).SelectedItems(1)
Else
Exit Sub
End If
Dim FSO As New Scripting.FileSystemObject
Dim fsoStream As Scripting.TextStream
Dim strLine As String
Set fsoStream = FSO.OpenTextFile(strPath)
Do Until fsoStream.AtEndOfStream = True
strLine = fsoStream.ReadLine
' ... do your work ...
Loop
fsoStream.Close
Set FSO = Nothing
Hope it help!
Best regards
Fabio
I know that this question has been answered, And all the answers are nice. But I wanted to add my two cents to this question for people who have similar (but not exactly the same) problem.
In a more general way, we can do something like this:
$('body').click(function(evt){
if(!$(evt.target).is('#menu_content')) {
//event handling code
}
});
This way we can handle not only events fired by anything except element with id menu_content
but also events that are fired by anything except any element that we can select using CSS selectors.
For instance in the following code snippet I am getting events fired by any element except all <li>
elements which are descendants of div element with id myNavbar
.
$('body').click(function(evt){
if(!$(evt.target).is('div#myNavbar li')) {
//event handling code
}
});
For your design, it is common practice to use divs rather than a table. This way, your layout will be more maintainable and changeable through proper styling. It does take some getting used to, but it will help you a ton in the long run and you will learn a lot about how styling works. However, I will provide you with a solution to the problem at hand.
In your stylesheets you have margins and padding set to 0 pixels. This overrides your align="center"
attribute. I would recommend taking these settings out of your CSS as you don't normally want all of your elements to be affected in this manner. If you already know what's going on in the CSS, and you want to keep it that way, then you have to apply a style to your table to override the previous sets. You could either give the table a class
or you can put the style inline with the HTML. Here are the two options:
With a class:
<table class="centerTable"></table>
In your style.css file you would have something like this:
.centerTable { margin: 0px auto; }
Inline with your HTML:
<table style="margin: 0px auto;"></table>
If you decide to wipe out the margins and padding being set to 0px, then you can keep align="center"
on your <td>
tags for whatever column you wish to align.
Use the .Clear
method.
Sheets("Test").Range("A1:C3").Clear
neater:
function BlockID() {
return {
"s":"Images/Block_01.png",
"g":"Images/Block_02.png",
"C":"Images/Block_03.png",
"d":"Images/Block_04.png"
}
}
or just
var images = {
"s":"Images/Block_01.png",
"g":"Images/Block_02.png",
"C":"Images/Block_03.png",
"d":"Images/Block_04.png"
}
The idea of MD5 is that is a one-way hashing, so it can't be once the original value has been passed through the hashing algorithm (if at all).
You could (potentially) create a database table with a pairing of the original and the MD5 values but I guess that's highly impractical and poses a major security risk.
This is the Kotlin extension function I use for this
/**
* Sets the specified Typeface Style on the first instance of the specified substring(s)
* @param one or more [Pair] of [String] and [Typeface] style (e.g. BOLD, ITALIC, etc.)
*/
fun TextView.setSubstringTypeface(vararg textsToStyle: Pair<String, Int>) {
val spannableString = SpannableString(this.text)
for (textToStyle in textsToStyle) {
val startIndex = this.text.toString().indexOf(textToStyle.first)
val endIndex = startIndex + textToStyle.first.length
if (startIndex >= 0) {
spannableString.setSpan(
StyleSpan(textToStyle.second),
startIndex,
endIndex,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
}
this.setText(spannableString, TextView.BufferType.SPANNABLE)
}
Usage:
text_view.text="something bold"
text_view.setSubstringTypeface(
Pair(
"something bold",
Typeface.BOLD
)
)
.
text_view.text="something bold something italic"
text_view.setSubstringTypeface(
Pair(
"something bold ",
Typeface.BOLD
),
Pair(
"something italic",
Typeface.ITALIC
)
)
Bash version
lineno=$(grep -n "pattern" filename)
lineno=${lineno%%:*}
in visual studio you can also do like that to pass simply or avoiding from comandline argument
static void Main(string[] args)
{
if (args == null)
{
Console.WriteLine("args is null"); // Check for null array
}
else
{
args=new string[2];
args[0] = "welcome in";
args[1] = "www.overflow.com";
Console.Write("args length is ");
Console.WriteLine(args.Length); // Write array length
for (int i = 0; i < args.Length; i++) // Loop through array
{
string argument = args[i];
Console.Write("args index ");
Console.Write(i); // Write index
Console.Write(" is [");
Console.Write(argument); // Write string
Console.WriteLine("]");
}
}
If the keystore is PKCS12 type (.pfx
) you have to specify it with -storetype PKCS12
(line breaks added for readability):
keytool -list -v -keystore <path to keystore.pfx> \
-storepass <password> \
-storetype PKCS12
Note that a similar issue can bite you if you use os.path.join()
to include an extension that already includes a dot, which is what happens automatically when you use os.path.splitext()
. In this example:
components = os.path.splitext(filename)
prefix = components[0]
extension = components[1]
return os.path.join("avatars", instance.username, prefix, extension)
Even though extension
might be .jpg
you end up with a folder named "foobar" rather than a file called "foobar.jpg". To prevent this you need to append the extension separately:
return os.path.join("avatars", instance.username, prefix) + extension
Simplest way avoiding RegRead and error handling tricks. Optional friendly consts for the registry:
Const HKEY_CLASSES_ROOT = &H80000000
Const HKEY_CURRENT_USER = &H80000001
Const HKEY_LOCAL_MACHINE = &H80000002
Const HKEY_USERS = &H80000003
Const HKEY_CURRENT_CONFIG = &H80000005
Then check with:
Set oReg = GetObject("winmgmts:{impersonationLevel=impersonate}!\\.\root\default:StdRegProv")
If oReg.EnumKey(HKEY_LOCAL_MACHINE, "SYSTEM\Example\Key\", "", "") = 0 Then
MsgBox "Key Exists"
Else
MsgBox "Key Not Found"
End If
IMPORTANT NOTES FOR THE ABOVE:
I am doing:
int(round( x , 0))
In this case, we first round properly at the unit level, then we convert to integer to avoid printing a float.
so
>>> int(round(5.59,0))
6
I think this answer works better than formating the string, and it also makes more sens to me to use the round function.
The with
function will let you use shorthand column references and sum
will count TRUE
results from the expression(s).
sum(with(aaa, sex==1 & group1==2))
## [1] 3
sum(with(aaa, sex==1 & group2=="A"))
## [1] 2
As @mnel pointed out, you can also do:
nrow(aaa[aaa$sex==1 & aaa$group1==2,])
## [1] 3
nrow(aaa[aaa$sex==1 & aaa$group2=="A",])
## [1] 2
The benefit of that is that you can do:
nrow(aaa)
## [1] 6
And, the behaviour matches Stata's count
almost exactly (syntax notwithstanding).
I try to
npm cache clean
But npm said newer version on npm (> 5) has self healing Mechanism and every thing i need to do for checking npm is use verify
npm cache verify
npm message :
The npm cache self-heals from corruption issues and data extracted from the cache is guaranteed to be valid.
If you want to make sure everything is consistent, use 'npm cache verify' instead.
but for forcing npm use this:
npm cache clean --force
I was able to fix this by: 1) Sign in as the old user. 2) Sign out. 3) Sign in as new user.
In my case, it appears that it wanted to verify my license on the old account first, before it would let me switch to a new one.
Calendar cal = Calendar.getInstance();
cal.set(Calendar.HOUR_OF_DAY,17);
cal.set(Calendar.MINUTE,30);
cal.set(Calendar.SECOND,0);
cal.set(Calendar.MILLISECOND,0);
Date d = cal.getTime();
Also See
Using boto3
import logging
import boto3
from botocore.exceptions import ClientError
def upload_file(file_name, bucket, object_name=None):
"""Upload a file to an S3 bucket
:param file_name: File to upload
:param bucket: Bucket to upload to
:param object_name: S3 object name. If not specified then file_name is used
:return: True if file was uploaded, else False
"""
# If S3 object_name was not specified, use file_name
if object_name is None:
object_name = file_name
# Upload the file
s3_client = boto3.client('s3')
try:
response = s3_client.upload_file(file_name, bucket, object_name)
except ClientError as e:
logging.error(e)
return False
return True
For more:- https://boto3.amazonaws.com/v1/documentation/api/latest/guide/s3-uploading-files.html
I solved it adding:
import androidx.appcompat.app.AppCompatActivity;
in the "import" zone of the main .java file. It worked for me.
Hope it helps!
Your where
clause will return all rows where tester
does not match username
AND where tester
is not null.
If you want to include NULLs, try:
where tester <> 'username' or tester is null
If you are looking for strings that do not contain the word "username" as a substring, then like
can be used:
where tester not like '%username%'
You can try something like this using HttpClient and HttpPost:
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("mystring", "value_of_my_string"));
// etc...
// Post data to the server
HttpPost httppost = new HttpPost("http://...");
httppost.setEntity(new UrlEncodedFormEntity(params));
HttpClient httpclient = new DefaultHttpClient();
HttpResponse httpResponse = httpclient.execute(httppost);
In my case, I was using the 6.0.24 Tomcat version (with JDK 1.8) and resolved the problem by upgrading to the 6.0.37 version.
Also, if you install the new tomcat version in a different folder, do not forget to copy your previous version /conf folder to the new installation folder.
This works:
var form = $(this).closest('form');
form = form.serializeArray();
form = form.concat([
{name: "customer_id", value: window.username},
{name: "post_action", value: "Update Information"}
]);
$.post('/change-user-details', form, function(d) {
if (d.error) {
alert("There was a problem updating your user details")
}
});
The sys.maxint constant was removed, since there is no longer a limit to the value of integers. However, sys.maxsize can be used as an integer larger than any practical list or string index. It conforms to the implementation’s “natural” integer size and is typically the same as sys.maxint in previous releases on the same platform (assuming the same build options).
Try this :
width:auto;
margin-right:50px;
Error:(30, 13) Failed to resolve: com.google.firebase:firebase-auth:9.6.1
If you ever get this error and you are using Android studio 2.2 that comes with firebase component integrated in it which has libraries version 9.6.0 by default and you are adding the latest dependencies like 9.6.1 . You might need to downgrade com.google.firebase:firebase-auth:9.6.1
to com.google.firebase:firebase-auth:9.6.0
Or check the library version of your pre-installed firebase and make sure it is of the same version with the new library you are trying to add or added to your project.
Sample DF:
In [79]: df = pd.DataFrame(np.random.randint(5, 15, (10, 3)), columns=list('abc'))
In [80]: df
Out[80]:
a b c
0 6 11 11
1 14 7 8
2 13 5 11
3 13 7 11
4 13 5 9
5 5 11 9
6 9 8 6
7 5 11 10
8 8 10 14
9 7 14 13
present only those rows where b > 10
In [81]: df[df.b > 10]
Out[81]:
a b c
0 6 11 11
5 5 11 9
7 5 11 10
9 7 14 13
Minimums (for all columns) for the rows satisfying b > 10
condition
In [82]: df[df.b > 10].min()
Out[82]:
a 5
b 11
c 9
dtype: int32
Minimum (for the b
column) for the rows satisfying b > 10
condition
In [84]: df.loc[df.b > 10, 'b'].min()
Out[84]: 11
UPDATE: starting from Pandas 0.20.1 the .ix indexer is deprecated, in favor of the more strict .iloc and .loc indexers.
Quoting from http://dev.mysql.com/doc/refman/5.1/en/create-table.html
{INDEX|KEY}
So KEY
is an INDEX
;)
For Mac via homebrew:
brew tap petere/postgresql
,
brew install <formula>
(eg: brew install petere/postgresql/postgresql-9.6
)
Remove old Postgres:
brew unlink postgresql
brew link -f postgresql-9.6
If any error happen, don't forget to read and follow brew instruction in each step.
Check this out for more: https://github.com/petere/homebrew-postgresql
first of all,
be sure that there is a post
if(isset($_POST['username'])) {
// check if the username has been set
}
second, and most importantly, sanitize the data, meaning that
$query = "SELECT password FROM users WHERE username='".$_POST['username']."'";
is deadly dangerous, instead use
$query = "SELECT password FROM users WHERE username='".mysql_real_escape_string($_POST['username'])."'";
and please research the subject sql injection
http://www.kanzaki.com/docs/ical/ has a slightly more readable version of the older spec. It helps as a starting point - many things are still the same.
Also on my site, I have
.ics
over the last few years. In particular, you may find this repeating events 'cheatsheet' to be useful..ics
areas that need careful handling:
Let's try to understand view by the following examples:
a=torch.range(1,16)
print(a)
tensor([ 1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11., 12., 13., 14.,
15., 16.])
print(a.view(-1,2))
tensor([[ 1., 2.],
[ 3., 4.],
[ 5., 6.],
[ 7., 8.],
[ 9., 10.],
[11., 12.],
[13., 14.],
[15., 16.]])
print(a.view(2,-1,4)) #3d tensor
tensor([[[ 1., 2., 3., 4.],
[ 5., 6., 7., 8.]],
[[ 9., 10., 11., 12.],
[13., 14., 15., 16.]]])
print(a.view(2,-1,2))
tensor([[[ 1., 2.],
[ 3., 4.],
[ 5., 6.],
[ 7., 8.]],
[[ 9., 10.],
[11., 12.],
[13., 14.],
[15., 16.]]])
print(a.view(4,-1,2))
tensor([[[ 1., 2.],
[ 3., 4.]],
[[ 5., 6.],
[ 7., 8.]],
[[ 9., 10.],
[11., 12.]],
[[13., 14.],
[15., 16.]]])
-1 as an argument value is an easy way to compute the value of say x provided we know values of y, z or the other way round in case of 3d and for 2d again an easy way to compute the value of say x provided we know values of y or vice versa..
Use either of these depending how you want backslashes in the shell variables handled (avar
is an awk variable, svar
is a shell variable):
awk -v avar="$svar" '... avar ...' file
awk 'BEGIN{avar=ARGV[1];ARGV[1]=""}... avar ...' "$svar" file
See http://cfajohnson.com/shell/cus-faq-2.html#Q24 for details and other options. The first method above is almost always your best option and has the most obvious semantics.
As an extension to John Galt's answer -
For the following DataFrame,
customer item1 item2 item3
0 1 apple milk tomato
1 2 water orange potato
2 3 juice mango chips
If you want to get a list of dictionaries including the index values, you can do something like,
df.to_dict('index')
Which outputs a dictionary of dictionaries where keys of the parent dictionary are index values. In this particular case,
{0: {'customer': 1, 'item1': 'apple', 'item2': 'milk', 'item3': 'tomato'},
1: {'customer': 2, 'item1': 'water', 'item2': 'orange', 'item3': 'potato'},
2: {'customer': 3, 'item1': 'juice', 'item2': 'mango', 'item3': 'chips'}}
I use a way that may look stupid but it works for me. I simply concat the columns I want to compare and use NOT IN:
SELECT *
FROM table1 t1
WHERE CONCAT(t1.first_name,t1.last_name) NOT IN (SELECT CONCAT(t2.first_name,t2.last_name) FROM table2 t2)
Leverage Lodash's attempt function to return an error object, which you can handle with the isError function.
// Returns an error object on failure
function parseJSON(jsonString) {
return _.attempt(JSON.parse.bind(null, jsonString));
}
// Example Usage
var goodJson = '{"id":123}';
var badJson = '{id:123}';
var goodResult = parseJSON(goodJson);
var badResult = parseJSON(badJson);
if (_.isError(goodResult)) {
console.log('goodResult: handle error');
} else {
console.log('goodResult: continue processing');
}
// > goodResult: continue processing
if (_.isError(badResult)) {
console.log('badResult: handle error');
} else {
console.log('badResult: continue processing');
}
// > badResult: handle error
For Fiddler to capture traffic from localhost on local IIS, there are 3 steps (It worked on my computer):
I added .UseUrls("https://localhost:<some port>/")
to the Program.cs. This seemed to do the trick for me!
Just put the html tags with there content and add the xmlns attribute with quotes after the equals and in between the quotes is http://www.w3.org/1999/xhtml
<picture>
tag will help you to resolve the right image source depending on the screen widthApparently the browsers behaviour hasn't changed much over the past 5 years and many would still download the hidden images, even if there was a display: none
property set on them.
Even though there's a media queries workaround, it could only be useful when the image was set as a background in the CSS.
While I was thinking that there's just a JS solution to the problem (lazy load, picturefill, etc.), it appeared that there's a nice pure HTML solution that comes out of the box with HTML5.
And that is the <picture>
tag.
Here's how MDN describes it:
The HTML
<picture>
element is a container used to specify multiple<source>
elements for a specific<img>
contained in it. The browser will choose the most suitable source according to the current layout of the page (the constraints of the box the image will appear in) and the device it will be displayed on (e.g. a normal or hiDPI device.)
And here's how to use it:
<picture>
<source srcset="mdn-logo-wide.png" media="(min-width: 600px)">
<img src="mdn-logo-narrow.png" alt="MDN">
</picture>
The browser would load the source of the img
tag, only if none of the media rules applies. When the <picture>
element is not supported by the browser, it will again fallback to showing the img
tag.
Normally you'd put the smallest image as the source of the <img>
and thus not load the heavy images for larger screens. Vice versa, if a media rule applies, the source of the <img>
will not be downloaded, instead it will download the url's contents of the corresponding <source>
tag.
Only pitfall here is that if the element is not supported by the browser, it will only load the small image. On the other hand in 2017 we ought to think and code in the mobile first approach.
And before someone got too exited, here's the current browser support for <picture>
:
More about the browser support you can find on Can I use.
The good thing is that html5please's sentence is to use it with a fallback. And I personally intend to take their advise.
More about the tag you can find in the W3C's specification. There's a disclaimer there, which I find important to mention:
The
picture
element is somewhat different from the similar-lookingvideo
andaudio
elements. While all of them containsource
elements, the source element’ssrc
attribute has no meaning when the element is nested within apicture
element, and the resource selection algorithm is different. As well, thepicture
element itself does not display anything; it merely provides a context for its containedimg
element that enables it to choose from multiple URLs.
So what it says is that it only helps you improve the performance when loading an image, by providing some context to it.
And you can still use some CSS magic in order to hide the image on small devices:
<style>
picture { display: none; }
@media (min-width: 600px) {
picture {
display: block;
}
}
</style>
<picture>
<source srcset="the-real-image-source" media="(min-width: 600px)">
<img src="a-1x1-pixel-image-that-will-be-hidden-in-the-css" alt="MDN">
</picture>
Thus the browser will not display the actual image and will only download the 1x1
pixel image (which can be cached if you use it more than once). Be aware, though, that if the <picture>
tag is not supported by the browser, even on descktop screens the actual image won't be displayed (so you'll definitely need a polyfill backup there).
Use is
when you want to check against an object's identity (e.g. checking to see if var
is None
). Use ==
when you want to check equality (e.g. Is var
equal to 3
?).
You can have custom classes where my_var == None
will return True
e.g:
class Negator(object):
def __eq__(self,other):
return not other
thing = Negator()
print thing == None #True
print thing is None #False
is
checks for object identity. There is only 1 object None
, so when you do my_var is None
, you're checking whether they actually are the same object (not just equivalent objects)
In other words, ==
is a check for equivalence (which is defined from object to object) whereas is
checks for object identity:
lst = [1,2,3]
lst == lst[:] # This is True since the lists are "equivalent"
lst is lst[:] # This is False since they're actually different objects
You can read the lines and replace all special characters safely this way.
Keep in mind that if you use \\W
you will not replace underscores.
Scanner scan = new Scanner(System.in);
while(scan.hasNextLine()){
System.out.println(scan.nextLine().replaceAll("[^a-zA-Z0-9]", ""));
}
Wikipedia on load testing (bold is mine):
[...]A load test is usually conducted to understand the behaviour of the system under a specific expected load. This load can be the expected concurrent number of users on the application performing a specific number of transactions within the set duration. This test will give out the response times of all the important business critical transactions.[...]
and on stress testing:
understand the upper limits of capacity within the system. This kind of test is done to determine the system's robustness in terms of extreme load and helps application administrators to determine if the system will perform sufficiently if the current load goes well above the expected maximum.
So the bottom line is: if you are testing normal, expected load (you know the system will be used by up to 100 users at a time), this is load testing. But when you want to determine how the system behaves under extreme load (DoS, Slashdot effect) and when it breaks, this is stress testing.
If the buttons are in a form
var myform = new FormData(getformbywhatever);
myform.get("rate");
QuerySelector above is a better solution. However, this method is easy to understand, especially if you don't have a clue about CSS. Plus, input fields are quite likely to be in a form anyway.
Didn't check, there are other similar solutions, sorry for the repetition
InputStream is = new FileInputStream("/home/kalt/Desktop/SUDIS/READY/ds.bin");
byte[] bytes = IOUtils.toByteArray(is);
/// strip a string, remove leading and trailing spaces
void strip(const string& in, string& out)
{
string::const_iterator b = in.begin(), e = in.end();
// skipping leading spaces
while (isSpace(*b)){
++b;
}
if (b != e){
// skipping trailing spaces
while (isSpace(*(e-1))){
--e;
}
}
out.assign(b, e);
}
In the above code, the isSpace() function is a boolean function that tells whether a character is a white space, you can implement this function to reflect your needs, or just call the isspace() from "ctype.h" if you want.
In your pom.xml you should add distributionManagement configuration to where to deploy.
In the following example I have used file system as the locations.
<distributionManagement>
<repository>
<id>internal.repo</id>
<name>Internal repo</name>
<url>file:///home/thara/testesb/in</url>
</repository>
</distributionManagement>
you can add another location while deployment by using the following command (but to avoid above error you should have at least 1 repository configured) :
mvn deploy -DaltDeploymentRepository=internal.repo::default::file:///home/thara/testesb/in
Previously I used alias'es in .zshrc for easy switching between versions but today I use SDKMAN. SDKMAN can also handle setting default java for the system, and downloading and installing new java versions.
Once sdkman is installed you can then do commands similar to what is possible with the nvm tool for handling node versions.
sdk list java
will list the java versions available on your system as well as available online for installation including their identifier that you can use in the sdk use
, sdk default
and sdk install
commands.
e.g. to install Amazon Corretto 11.0.8 and ask if it should be the new default do this:
sdk install java 11.0.8-amzn
A feature I also use regularly is the .sdkmanrc
file.
If you place that in a directory on your machine and run the sdk env
command in the directory then you can configure tool versions used only in that directory. It is also possible to make sdkman switch tool versions automatically using the sdkman_auto_env=true
configuration.
sdkman also supports handling other tools for the JVM such as gradle, kotlin, maven and more.
For more information check out https://sdkman.io/usage#env
If none of the above solves your problem and have installed with php-x86 (Windows 32 bit), then problem may be of openssl - for more info : How to fix libeay32.dll was not found error
Beginning with AngularJS 1.1.4 you can use $watchCollection
:
$scope.$watchCollection('[item1, item2]', function(newValues, oldValues){
// do stuff here
// newValues and oldValues contain the new and respectively old value
// of the observed collection array
});
Plunker example here
Documentation here
All of the current answers are wrong in some cases as they do not consider that timezones change their offset relative to UTC. So in some cases adding 24h is different from adding a calendar day.
The following solution works for Samoa and keeps the local time constant.
def add_day(today):
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone(datetime.timezone.utc)
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta(days=1)
tomorrow_utc_tz = tomorrow_utc.astimezone(tz)
tomorrow_utc_tz = tomorrow_utc_tz.replace(hour=today.hour,
minute=today.minute,
second=today.second)
return tomorrow_utc_tz
# core modules
import datetime
# 3rd party modules
import pytz
# add_day methods
def add_day(today):
"""
Add a day to the current day.
This takes care of historic offset changes and DST.
Parameters
----------
today : timezone-aware datetime object
Returns
-------
tomorrow : timezone-aware datetime object
"""
today_utc = today.astimezone(datetime.timezone.utc)
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta(days=1)
tomorrow_utc_tz = tomorrow_utc.astimezone(tz)
tomorrow_utc_tz = tomorrow_utc_tz.replace(hour=today.hour,
minute=today.minute,
second=today.second)
return tomorrow_utc_tz
def add_day_datetime_timedelta_conversion(today):
# Correct for Samoa, but dst shift
today_utc = today.astimezone(datetime.timezone.utc)
tz = today.tzinfo
tomorrow_utc = today_utc + datetime.timedelta(days=1)
tomorrow_utc_tz = tomorrow_utc.astimezone(tz)
return tomorrow_utc_tz
def add_day_dateutil_relativedelta(today):
# WRONG!
from dateutil.relativedelta import relativedelta
return today + relativedelta(days=1)
def add_day_datetime_timedelta(today):
# WRONG!
return today + datetime.timedelta(days=1)
# Test cases
def test_samoa(add_day):
"""
Test if add_day properly increases the calendar day for Samoa.
Due to economic considerations, Samoa went from 2011-12-30 10:00-11:00
to 2011-12-30 10:00+13:00. Hence the country skipped 2011-12-30 in its
local time.
See https://stackoverflow.com/q/52084423/562769
A common wrong result here is 2011-12-30T23:59:00-10:00. This date never
happened in Samoa.
"""
tz = pytz.timezone('Pacific/Apia')
today_utc = datetime.datetime(2011, 12, 30, 9, 59,
tzinfo=datetime.timezone.utc)
today_tz = today_utc.astimezone(tz) # 2011-12-29T23:59:00-10:00
tomorrow = add_day(today_tz)
return tomorrow.isoformat() == '2011-12-31T23:59:00+14:00'
def test_dst(add_day):
"""Test if add_day properly increases the calendar day if DST happens."""
tz = pytz.timezone('Europe/Berlin')
today_utc = datetime.datetime(2018, 3, 25, 0, 59,
tzinfo=datetime.timezone.utc)
today_tz = today_utc.astimezone(tz) # 2018-03-25T01:59:00+01:00
tomorrow = add_day(today_tz)
return tomorrow.isoformat() == '2018-03-26T01:59:00+02:00'
to_test = [(add_day_dateutil_relativedelta, 'relativedelta'),
(add_day_datetime_timedelta, 'timedelta'),
(add_day_datetime_timedelta_conversion, 'timedelta+conversion'),
(add_day, 'timedelta+conversion+dst')]
print('{:<25}: {:>5} {:>5}'.format('Method', 'Samoa', 'DST'))
for method, name in to_test:
print('{:<25}: {:>5} {:>5}'
.format(name,
test_samoa(method),
test_dst(method)))
Method : Samoa DST
relativedelta : 0 0
timedelta : 0 0
timedelta+conversion : 1 0
timedelta+conversion+dst : 1 1
Version check example below.
Note that I do not stop the execution, this snippet just:
- do nothing if exact version matches
- write INFO if revision (last number) is different
- write WARN if any of major+minor are different
import sys
import warnings
def checkVersion():
# Checking Python version:
expect_major = 2
expect_minor = 7
expect_rev = 14
if sys.version_info[:3] != (expect_major, expect_minor, expect_rev):
print("INFO: Script developed and tested with Python " + str(expect_major) + "." + str(expect_minor) + "." + str(expect_rev))
current_version = str(sys.version_info[0])+"."+str(sys.version_info[1])+"."+str(sys.version_info[2])
if sys.version_info[:2] != (expect_major, expect_minor):
warnings.warn("Current Python version was unexpected: Python " + current_version)
else:
print(" Current version is different: Python " + current_version)
The PAM module to limit resources caused exactly the results you described: My process died mysteriously with the text Killed on the console window. No log output, neither in syslog nor in kern.log. The top program helped me to discover that exactly after one minute of CPU usage my process gets killed.
You could use a do ... while
loop instead of a while
loop, so that rs.next()
is called after the loop is executed, like this:
if (!rs.next()) { //if rs.next() returns false
//then there are no rows.
System.out.println("No records found");
}
else {
do {
// Get data from the current row and use it
} while (rs.next());
}
Or count the rows yourself as you're getting them:
int count = 0;
while (rs.next()) {
++count;
// Get data from the current row and use it
}
if (count == 0) {
System.out.println("No records found");
}
You are having this problem because you are attempting to console log app.address() before the connection has been made. You just have to be sure to console log after the connection is made, i.e. in a callback or after an event signaling that the connection has been made.
Fortunately, the 'listening' event is emitted by the server after the connection is made so just do this:
var express = require('express');
var http = require('http');
var app = express();
var server = http.createServer(app);
app.get('/', function(req, res) {
res.send("Hello World!");
});
server.listen(3000, 'localhost');
server.on('listening', function() {
console.log('Express server started on port %s at %s', server.address().port, server.address().address);
});
This works just fine in nodejs v0.6+ and Express v3.0+.
I have found that, at least for "passcode"-like fields, doing something like <input type="tel" />
ends up producing the most authentic number-oriented field and it also has the benefit of no autoformatting. For example, in a mobile application I developed for Hilton recently, I ended up going with this:
... and my client was very impressed.
<form>_x000D_
<input type="tel" />_x000D_
<button type="submit">Submit</button>_x000D_
</form>
_x000D_
For MAC user, add this line into your Default Settings
File path is: /Users/USER_NAME/Library/Application Support/Code/User/settings.json
"tslint.autoFixOnSave": true
Sample of the file would be:
{
"window.zoomLevel": 0,
"workbench.iconTheme": "vscode-icons",
"typescript.check.tscVersion": false,
"vsicons.projectDetection.disableDetect": true,
"typescript.updateImportsOnFileMove.enabled": "always",
"eslint.autoFixOnSave": true,
"tslint.autoFixOnSave": true
}
Regarding building a DLL using MinGW, here are some very brief instructions.
First, you need to mark your functions for export, so they can be used by callers of the DLL. To do this, modify them so they look like (for example)
__declspec( dllexport ) int add2(int num){
return num + 2;
}
then, assuming your functions are in a file called funcs.c, you can compile them:
gcc -shared -o mylib.dll funcs.c
The -shared flag tells gcc to create a DLL.
To check if the DLL has actually exported the functions, get hold of the free Dependency Walker tool and use it to examine the DLL.
For a free IDE which will automate all the flags etc. needed to build DLLs, take a look at the excellent Code::Blocks, which works very well with MinGW.
Edit: For more details on this subject, see the article Creating a MinGW DLL for Use with Visual Basic on the MinGW Wiki.
They are the same (as is the third form, ^=
).
Note, though, that they are still considered different from the point of view of the parser, that is a stored outline defined for a !=
won't match <>
or ^=
.
This is unlike PostgreSQL
where the parser treats !=
and <>
yet on parsing stage, so you cannot overload !=
and <>
to be different operators.
cp `ls -ltr | grep 'Jun 14' | perl -wne 's/^.*\s+(\S+)$/$1/; print $1 . "\n";'` /some_destination_dir
profilage bas� sur l'analyse de l'esprit
(french)
should be translated as:
profilage basé sur l'analyse de l'esprit
so, in this case �
= é
Clarifying a bit on why the tee option is preferable
Assuming you have appropriate permission to execute the command that creates the output, if you pipe the output of your command to tee, you only need to elevate tee's privledges with sudo and direct tee to write (or append) to the file in question.
in the example given in the question that would mean:
ls -hal /root/ | sudo tee /root/test.out
for a couple more practical examples:
# kill off one source of annoying advertisements
echo 127.0.0.1 ad.doubleclick.net | sudo tee -a /etc/hosts
# configure eth4 to come up on boot, set IP and netmask (centos 6.4)
echo -e "ONBOOT=\"YES\"\nIPADDR=10.42.84.168\nPREFIX=24" | sudo tee -a /etc/sysconfig/network-scripts/ifcfg-eth4
In each of these examples you are taking the output of a non-privileged command and writing to a file that is usually only writable by root, which is the origin of your question.
It is a good idea to do it this way because the command that generates the output is not executed with elevated privileges. It doesn't seem to matter here with echo
but when the source command is a script that you don't completely trust, it is crucial.
Note you can use the -a option to tee to append append (like >>
) to the target file rather than overwrite it (like >
).
Open Tools -> Options -> Keymap, then look for the action called "Re-indent current line or selection" and set whatever shortcut you want.
use simplejson or cjson for speedups
import simplejson as json
json.loads(obj)
or
cjson.decode(obj)
My env: macOS & anaconda3
This works for me:
matplotlib.use('macosx')
or interactive mode:
matplotlib.use('TkAgg')
My issue on OSX it was gradle version. Gradle was ignoring my Android.mk. So, in order to override this option, and use my make instead, I have entered this line:
sourceSets.main.jni.srcDirs = []
inside of the android
tag in build.gradle
.
I have wasted lot of time on this!
You can met another way to get time in seconds/milliseconds since 1 Jan 1970:
var milliseconds = +new Date;
var seconds = milliseconds / 1000;
But be careful with such approach, cause it might be tricky to read and understand it.
@RestController
was provided since Spring 4.0.1. These controllers indicate that here @RequestMapping methods assume @ResponseBody semantics by default.
In earlier versions the similar functionality could be achieved by using below:
@RequestMapping
coupled with @ResponseBody
like @RequestMapping(value = "/abc", method = RequestMethod.GET, produces ="application/xml")
public @ResponseBody MyBean fetch(){
return new MyBean("hi")
}
<mvc:annotation-driven/>
may be used as one of the ways for using JSON with Jackson or xml.
@XmlRootElement(name = "MyBean")
@XmlType(propOrder = {"field2", "field1"})
public class MyBean{
field1
field2 ..
//getter, setter
}
@ResponseBody
is treated as the view here among MVC and it is dispatched directly instead being dispatched from Dispatcher Servlet and the respective converters convert the response in the related format like text/html, application/xml, application/json .However, the Restcontroller is already coupled with ResponseBody and the respective converters. Secondly, here, since instead of converting the responsebody, it is automatically converted to http response.
How malloc() and free() works depends on the runtime library used. Generally, malloc() allocates a heap (a block of memory) from the operating system. Each request to malloc() then allocates a small chunk of this memory be returning a pointer to the caller. The memory allocation routines will have to store some extra information about the block of memory allocated to be able to keep track of used and free memory on the heap. This information is often stored in a few bytes just before the pointer returned by malloc() and it can be a linked list of memory blocks.
By writing past the block of memory allocated by malloc() you will most likely destroy some of the book-keeping information of the next block which may be the remaining unused block of memory.
One place where you program may also crash is when copying too many characters into the buffer. If the extra characters are located outside the heap you may get an access violation as you are trying to write to non-existing memory.
You can use sed
for this too -
sed -n '320123'p filename
This will print line number 320123.
If you want a range then you can do -
sed -n '320123,320150'p filename
If you want from a particular line to the very end then -
sed -n '320123,$'p filename
In general, fixing corrupt objects can be pretty difficult. However, in this case, we're confident that the problem is an aborted transfer, meaning that the object is in a remote repository, so we should be able to safely remove our copy and let git get it from the remote, correctly this time.
The temporary object file, with zero size, can obviously just be removed. It's not going to do us any good. The corrupt object which refers to it, d4a0e75...
, is our real problem. It can be found in .git/objects/d4/a0e75...
. As I said above, it's going to be safe to remove, but just in case, back it up first.
At this point, a fresh git pull
should succeed.
...assuming it was going to succeed in the first place. In this case, it appears that some local modifications prevented the attempted merge, so a stash
, pull
, stash pop
was in order. This could happen with any merge, though, and didn't have anything to do with the corrupted object. (Unless there was some index cleanup necessary, and the stash did that in the process... but I don't believe so.)
downloaded Sql server management 2008 r2 and got it installed. Its getting installed but when I try to connect it via .\SQLEXPRESS it shows error. DO I need to install any SQL service on my system?
You installed management studio which is just a management interface to SQL Server. If you didn't (which is what it seems like) already have SQL Server installed, you'll need to install it in order to have it on your system and use it.
http://www.microsoft.com/en-us/download/details.aspx?id=1695
You need to use to_timestamp()
to convert your string to a proper timestamp
value:
to_timestamp('12-01-2012 21:24:00', 'dd-mm-yyyy hh24:mi:ss')
If your column is of type DATE
(which also supports seconds), you need to use to_date()
to_date('12-01-2012 21:24:00', 'dd-mm-yyyy hh24:mi:ss')
To get this into a where
condition use the following:
select *
from TableA
where startdate >= to_timestamp('12-01-2012 21:24:00', 'dd-mm-yyyy hh24:mi:ss')
and startdate <= to_timestamp('12-01-2012 21:25:33', 'dd-mm-yyyy hh24:mi:ss')
You never need to use to_timestamp()
on a column that is of type timestamp
.
var requiredPath = Path.GetDirectoryName(Path.GetDirectoryName(
System.IO.Path.GetDirectoryName(
System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase )));
The best way to do this is with the following code:
Button button = (Button)findViewById(R.id.btn_register);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//do your fancy method
}
});
I try in this example to show you a complete example to personalize your OrderBy sorts
import java.util.List;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Sort;
import org.springframework.data.jpa.repository.*;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;
import org.springframework.data.domain.Sort;
/**
* Spring Data repository for the User entity.
*/
@SuppressWarnings("unused")
@Repository
public interface UserRepository extends JpaRepository<User, Long> {
List <User> findAllWithCustomOrderBy(Sort sort);
}
you will use this example : A method for build dynamically a object that instance of Sort :
import org.springframework.data.domain.Sort;
public class SampleOrderBySpring{
Sort dynamicOrderBySort = createSort();
public static void main( String[] args )
{
System.out.println("default sort \"firstName\",\"name\",\"age\",\"size\" ");
Sort defaultSort = createStaticSort();
System.out.println(userRepository.findAllWithCustomOrderBy(defaultSort ));
String[] orderBySortedArray = {"name", "firstName"};
System.out.println("default sort ,\"name\",\"firstName\" ");
Sort dynamicSort = createDynamicSort(orderBySortedArray );
System.out.println(userRepository.findAllWithCustomOrderBy(dynamicSort ));
}
public Sort createDynamicSort(String[] arrayOrdre) {
return Sort.by(arrayOrdre);
}
public Sort createStaticSort() {
String[] arrayOrdre ={"firstName","name","age","size");
return Sort.by(arrayOrdre);
}
}
Yes.
If the scrollbar is not the browser scrollbar, then it will be built of regular HTML elements (probably div
s and span
s) and can thus be styled (or will be Flash, Java, etc and can be customized as per those environments).
The specifics depend on the DOM structure used.
like dwn said, Performance was one of its benefits during the rise of complex processors, MSDN blog Non-classical processor behavior: How doing something can be faster than not doing it gives an example which clearly says the difference between ternary (conditional) operator and if/else statement.
give the following code:
#include <windows.h>
#include <stdlib.h>
#include <stdlib.h>
#include <stdio.h>
int array[10000];
int countthem(int boundary)
{
int count = 0;
for (int i = 0; i < 10000; i++) {
if (array[i] < boundary) count++;
}
return count;
}
int __cdecl wmain(int, wchar_t **)
{
for (int i = 0; i < 10000; i++) array[i] = rand() % 10;
for (int boundary = 0; boundary <= 10; boundary++) {
LARGE_INTEGER liStart, liEnd;
QueryPerformanceCounter(&liStart);
int count = 0;
for (int iterations = 0; iterations < 100; iterations++) {
count += countthem(boundary);
}
QueryPerformanceCounter(&liEnd);
printf("count=%7d, time = %I64d\n",
count, liEnd.QuadPart - liStart.QuadPart);
}
return 0;
}
the cost for different boundary are much different and wierd (see the original material). while if change:
if (array[i] < boundary) count++;
to
count += (array[i] < boundary) ? 1 : 0;
The execution time is now independent of the boundary value, since:
the optimizer was able to remove the branch from the ternary expression.
but on my desktop intel i5 cpu/windows 10/vs2015, my test result is quite different with msdn blog.
when using debug mode, if/else cost:
count= 0, time = 6434
count= 100000, time = 7652
count= 200800, time = 10124
count= 300200, time = 12820
count= 403100, time = 15566
count= 497400, time = 16911
count= 602900, time = 15999
count= 700700, time = 12997
count= 797500, time = 11465
count= 902500, time = 7619
count=1000000, time = 6429
and ternary operator cost:
count= 0, time = 7045
count= 100000, time = 10194
count= 200800, time = 12080
count= 300200, time = 15007
count= 403100, time = 18519
count= 497400, time = 20957
count= 602900, time = 17851
count= 700700, time = 14593
count= 797500, time = 12390
count= 902500, time = 9283
count=1000000, time = 7020
when using release mode, if/else cost:
count= 0, time = 7
count= 100000, time = 9
count= 200800, time = 9
count= 300200, time = 9
count= 403100, time = 9
count= 497400, time = 8
count= 602900, time = 7
count= 700700, time = 7
count= 797500, time = 10
count= 902500, time = 7
count=1000000, time = 7
and ternary operator cost:
count= 0, time = 16
count= 100000, time = 17
count= 200800, time = 18
count= 300200, time = 16
count= 403100, time = 22
count= 497400, time = 16
count= 602900, time = 16
count= 700700, time = 15
count= 797500, time = 15
count= 902500, time = 16
count=1000000, time = 16
the ternary operator is slower than if/else statement on my machine!
so according to different compiler optimization techniques, ternal operator and if/else may behaves much different.
The best threads tutorial I know of is here:
https://computing.llnl.gov/tutorials/pthreads/
I like that it's written about the API, rather than about a particular implementation, and it gives some nice simple examples to help you understand synchronization.
I like Google Spreadsheets' ImportXML(URL, XPath) function.
It will repeat cells down the column if your XPath expression returns more than one value.
You can have up to 50 importxml()
functions on one spreadsheet.
RapidMiner's Web Plugin is also pretty easy to use. It can do posts, accepts cookies, and can set the user-agent.
use ob_start();
before session_start();
at top of your page like this
<?php
ob_start();
session_start();
If you want the MIME type for a file, you can use the following code:
- (NSString *)mimeTypeForPath:(NSString *)path
{
// get a mime type for an extension using MobileCoreServices.framework
CFStringRef extension = (__bridge CFStringRef)[path pathExtension];
CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, extension, NULL);
assert(UTI != NULL);
NSString *mimetype = CFBridgingRelease(UTTypeCopyPreferredTagWithClass(UTI, kUTTagClassMIMEType));
assert(mimetype != NULL);
CFRelease(UTI);
return mimetype;
}
In the case of a ZIP file, this will return application/zip
.
As you've already identified, you cannot save from within a foreach
that is still drawing from the database via an active reader.
Calling ToList()
or ToArray()
is fine for small data sets, but when you have thousands of rows, you will be consuming a large amount of memory.
It's better to load the rows in chunks.
public static class EntityFrameworkUtil
{
public static IEnumerable<T> QueryInChunksOf<T>(this IQueryable<T> queryable, int chunkSize)
{
return queryable.QueryChunksOfSize(chunkSize).SelectMany(chunk => chunk);
}
public static IEnumerable<T[]> QueryChunksOfSize<T>(this IQueryable<T> queryable, int chunkSize)
{
int chunkNumber = 0;
while (true)
{
var query = (chunkNumber == 0)
? queryable
: queryable.Skip(chunkNumber * chunkSize);
var chunk = query.Take(chunkSize).ToArray();
if (chunk.Length == 0)
yield break;
yield return chunk;
chunkNumber++;
}
}
}
Given the above extension methods, you can write your query like this:
foreach (var client in clientList.OrderBy(c => c.Id).QueryInChunksOf(100))
{
// do stuff
context.SaveChanges();
}
The queryable object you call this method on must be ordered. This is because Entity Framework only supports IQueryable<T>.Skip(int)
on ordered queries, which makes sense when you consider that multiple queries for different ranges require the ordering to be stable. If the ordering isn't important to you, just order by primary key as that's likely to have a clustered index.
This version will query the database in batches of 100. Note that SaveChanges()
is called for each entity.
If you want to improve your throughput dramatically, you should call SaveChanges()
less frequently. Use code like this instead:
foreach (var chunk in clientList.OrderBy(c => c.Id).QueryChunksOfSize(100))
{
foreach (var client in chunk)
{
// do stuff
}
context.SaveChanges();
}
This results in 100 times fewer database update calls. Of course each of those calls takes longer to complete, but you still come out way ahead in the end. Your mileage may vary, but this was worlds faster for me.
And it gets around the exception you were seeing.
EDIT I revisited this question after running SQL Profiler and updated a few things to improve performance. For anyone who is interested, here is some sample SQL that shows what is created by the DB.
The first loop doesn't need to skip anything, so is simpler.
SELECT TOP (100) -- the chunk size
[Extent1].[Id] AS [Id],
[Extent1].[Name] AS [Name],
FROM [dbo].[Clients] AS [Extent1]
ORDER BY [Extent1].[Id] ASC
Subsequent calls need to skip previous chunks of results, so introduces usage of row_number
:
SELECT TOP (100) -- the chunk size
[Extent1].[Id] AS [Id],
[Extent1].[Name] AS [Name],
FROM (
SELECT [Extent1].[Id] AS [Id], [Extent1].[Name] AS [Name], row_number()
OVER (ORDER BY [Extent1].[Id] ASC) AS [row_number]
FROM [dbo].[Clients] AS [Extent1]
) AS [Extent1]
WHERE [Extent1].[row_number] > 100 -- the number of rows to skip
ORDER BY [Extent1].[Id] ASC
You will most likely want to use the ftplib module for python
import ftplib
ftp = ftplib.FTP()
host = "ftp.site.uk"
port = 21
ftp.connect(host, port)
print (ftp.getwelcome())
try:
print ("Logging in...")
ftp.login("yourusername", "yourpassword")
except:
"failed to login"
This logs you into an FTP server. What you do from there is up to you. Your question doesnt indicate any other operations that really need doing.
This solution worked for me
// store the currently selected tab in the hash value
if(history.pushState) {
window.history.pushState(null, null, '#' + id);
}
else {
window.location.hash = id;
}
// on load of the page: switch to the currently selected tab
var hash = window.location.hash;
$('#myTab a[href="' + hash + '"]').tab('show');
And my full js code is
$('#myTab a').click(function(e) {
e.preventDefault();
$(this).tab('show');
});
// store the currently selected tab in the hash value
$("ul.nav-tabs > li > a").on("shown.bs.tab", function(e) {
var id = $(e.target).attr("href").substr(1);
if(history.pushState) {
window.history.pushState(null, null, '#' + id);
}
else {
window.location.hash = id;
}
// window.location.hash = '#!' + id;
});
// on load of the page: switch to the currently selected tab
var hash = window.location.hash;
// console.log(hash);
$('#myTab a[href="' + hash + '"]').tab('show');
The "normal" way is to:
cd
to the resulting directorypython setup.py install
Another solution is to use easy_install
. Go to http://peak.telecommunity.com/DevCenter/EasyInstall), install the package using the instructions on that page, and then type, in a Terminal window:
easy_install BeautifulSoup4
# for older v3:
# easy_install BeautifulSoup
easy_install
will take care of downloading, unpacking, building, and installing the package. The advantage to using easy_install
is that it knows how to search for many different Python packages, because it queries the PyPI registry. Thus, once you have easy_install
on your machine, you install many, many different third-party packages simply by one command at a shell.
If you're using Git-Gui, it tells you when you should worry:
This repository currently has approximately 1500 loose objects.
The following command will bring a similar number:
$ git count-objects
Except, from its source, git-gui will do the math by itself, actually counting something at .git/objects
folder and probably brings an approximation (I don't know tcl
to properly read that!).
In any case, it seems to give the warning based on an arbitrary number around 300 loose objects.
I think Octave only return one value which is the first return value, in your case, 'array'.
And Octave print it as "ans".
Others, 'listp','freep' were not printed.
Because it showed up within the function.
Try this out:
[ A, B, C] = initialize( 4 )
And the 'array','listp','freep' will print as A, B and C.
I've found this post because I was looking for a way to convert a SQLAlchemy row into a dict. I'm using SqlSoup... but the answer was built by myself, so, if it could helps someone here's my two cents:
a = db.execute('select * from acquisizioni_motes')
b = a.fetchall()
c = b[0]
# and now, finally...
dict(zip(c.keys(), c.values()))
I am very suprised nobody came up with this kind of solution to bind it against bool array. It might not be the cleanest, but it can be used very easily:
private bool[] _modeArray = new bool[] { true, false, false};
public bool[] ModeArray
{
get { return _modeArray ; }
}
public int SelectedMode
{
get { return Array.IndexOf(_modeArray, true); }
}
in XAML:
<RadioButton GroupName="Mode" IsChecked="{Binding Path=ModeArray[0], Mode=TwoWay}"/>
<RadioButton GroupName="Mode" IsChecked="{Binding Path=ModeArray[1], Mode=TwoWay}"/>
<RadioButton GroupName="Mode" IsChecked="{Binding Path=ModeArray[2], Mode=TwoWay}"/>
NOTE: you dont need two-way binding if you dont want to one checked by default. TwoWay binding is the biggest cons of this solution.
Pros:
Use git push origin master
instead.
You have a repository locally and the initial git push
is "pushing" to it. It's not necessary to do so (as it is local) and it shows everything as up-to-date. git push origin master
specifies a a remote repository (origin
) and the branch located there (master
).
For more information, check out this resource.
If you have got a List<T>
, then List<T>.RemoveAll
is your best bet. There can't be anything more efficient. Internally it does the array moving in one shot, not to mention it is O(N).
If all you got is an IList<T>
or an ICollection<T>
you got roughly these three options:
public static void RemoveAll<T>(this IList<T> ilist, Predicate<T> predicate) // O(N^2)
{
for (var index = ilist.Count - 1; index >= 0; index--)
{
var item = ilist[index];
if (predicate(item))
{
ilist.RemoveAt(index);
}
}
}
or
public static void RemoveAll<T>(this ICollection<T> icollection, Predicate<T> predicate) // O(N)
{
var nonMatchingItems = new List<T>();
// Move all the items that do not match to another collection.
foreach (var item in icollection)
{
if (!predicate(item))
{
nonMatchingItems.Add(item);
}
}
// Clear the collection and then copy back the non-matched items.
icollection.Clear();
foreach (var item in nonMatchingItems)
{
icollection.Add(item);
}
}
or
public static void RemoveAll<T>(this ICollection<T> icollection, Func<T, bool> predicate) // O(N^2)
{
foreach (var item in icollection.Where(predicate).ToList())
{
icollection.Remove(item);
}
}
Go for either 1 or 2.
1 is lighter on memory and faster if you have less deletes to perform (i.e. predicate is false most of the times).
2 is faster if you have more deletes to perform.
3 is the cleanest code but performs poorly IMO. Again all that depends on input data.
For some benchmarking details see https://github.com/dotnet/BenchmarkDotNet/issues/1505
var currencyInput = document.querySelector('input[type="currency"]')
var currency = 'USD' // https://www.currency-iso.org/dam/downloads/lists/list_one.xml
// format inital value
onBlur({target:currencyInput})
// bind event listeners
currencyInput.addEventListener('focus', onFocus)
currencyInput.addEventListener('blur', onBlur)
function localStringToNumber( s ){
return Number(String(s).replace(/[^0-9.-]+/g,""))
}
function onFocus(e){
var value = e.target.value;
e.target.value = value ? localStringToNumber(value) : ''
}
function onBlur(e){
var value = e.target.value
var options = {
maximumFractionDigits : 2,
currency : currency,
style : "currency",
currencyDisplay : "symbol"
}
e.target.value = value
? localStringToNumber(value).toLocaleString(undefined, options)
: ''
}
_x000D_
input{
padding: 10px;
font: 20px Arial;
width: 70%;
}
_x000D_
<input type='currency' value="123" placeholder='Type a number & click outside' />
_x000D_
In matplotlib grey colors can be given as a string of a numerical value between 0-1.
For example c = '0.1'
Then you can convert your third variable in a value inside this range and to use it to color your points.
In the following example I used the y position of the point as the value that determines the color:
from matplotlib import pyplot as plt
x = [1, 2, 3, 4, 5, 6, 7, 8, 9]
y = [125, 32, 54, 253, 67, 87, 233, 56, 67]
color = [str(item/255.) for item in y]
plt.scatter(x, y, s=500, c=color)
plt.show()
I think the best solution would be to do a subquery and then join that to the table. The sub query would return the primary key of the table. Here is an example:
select *
from (
SELECT row_number() over(partition by link order by day, month) row_id
, *
FROM posted
WHERE ad='$key'
) x
where x.row_id = 1
What this does is the row_number function puts a numerical sequence partitioned by each distinct link that results in the query.
By taking only those row_numbers that = 1, then you only return 1 row for each link.
The way you change what link gets marked "1" is through the order-by clause in the row_number function.
Hope this helps.
There are many ways to achieve this, but the most important consideration to measure elapsed time is to use System.nanoTime()
and TimeUnit.NANOSECONDS
as the time unit. Why should I do this? Well, it is because System.nanoTime()
method returns a high-resolution time source, in nanoseconds since some reference point (i.e. Java Virtual Machine's start up).
This method can only be used to measure elapsed time and is not related to any other notion of system or wall-clock time.
For the same reason, it is recommended to avoid the use of the System.currentTimeMillis()
method for measuring elapsed time. This method returns the wall-clock
time, which may change based on many factors. This will be negative for your measurements.
Note that while the unit of time of the return value is a millisecond, the granularity of the value depends on the underlying operating system and may be larger. For example, many operating systems measure time in units of tens of milliseconds.
So here you have one solution based on the System.nanoTime()
method, another one using Guava, and the final one Apache Commons Lang
public class TimeBenchUtil
{
public static void main(String[] args) throws InterruptedException
{
stopWatch();
stopWatchGuava();
stopWatchApacheCommons();
}
public static void stopWatch() throws InterruptedException
{
long endTime, timeElapsed, startTime = System.nanoTime();
/* ... the code being measured starts ... */
// sleep for 5 seconds
TimeUnit.SECONDS.sleep(5);
/* ... the code being measured ends ... */
endTime = System.nanoTime();
// get difference of two nanoTime values
timeElapsed = endTime - startTime;
System.out.println("Execution time in nanoseconds : " + timeElapsed);
}
public static void stopWatchGuava() throws InterruptedException
{
// Creates and starts a new stopwatch
Stopwatch stopwatch = Stopwatch.createStarted();
/* ... the code being measured starts ... */
// sleep for 5 seconds
TimeUnit.SECONDS.sleep(5);
/* ... the code being measured ends ... */
stopwatch.stop(); // optional
// get elapsed time, expressed in milliseconds
long timeElapsed = stopwatch.elapsed(TimeUnit.NANOSECONDS);
System.out.println("Execution time in nanoseconds : " + timeElapsed);
}
public static void stopWatchApacheCommons() throws InterruptedException
{
StopWatch stopwatch = new StopWatch();
stopwatch.start();
/* ... the code being measured starts ... */
// sleep for 5 seconds
TimeUnit.SECONDS.sleep(5);
/* ... the code being measured ends ... */
stopwatch.stop(); // Optional
long timeElapsed = stopwatch.getNanoTime();
System.out.println("Execution time in nanoseconds : " + timeElapsed);
}
}
@Html.DropDownList("Types", Model.Types, new { @disabled = "" })
Works
This works for me
# Convert image to bytes
import PIL.Image as Image
pil_im = Image.fromarray(image)
b = io.BytesIO()
pil_im.save(b, 'jpeg')
im_bytes = b.getvalue()
return im_bytes
One thing to note, sed
cannot write files on its own as the sole purpose of sed is to act as an editor on the "stream" (ie pipelines of stdin, stdout, stderr, and other >&n
buffers, sockets and the like). With this in mind you can use another command tee
to write the output back to the file. Another option is to create a patch from piping the content into diff
.
Tee method
sed '/regex/' <file> | tee <file>
Patch method
sed '/regex/' <file> | diff -p <file> /dev/stdin | patch
UPDATE:
Also, note that patch will get the file to change from line 1 of the diff output:
Patch does not need to know which file to access as this is found in the first line of the output from diff:
$ echo foobar | tee fubar
$ sed 's/oo/u/' fubar | diff -p fubar /dev/stdin
*** fubar 2014-03-15 18:06:09.000000000 -0500
--- /dev/stdin 2014-03-15 18:06:41.000000000 -0500
***************
*** 1 ****
! foobar
--- 1 ----
! fubar
$ sed 's/oo/u/' fubar | diff -p fubar /dev/stdin | patch
patching file fubar
I know that you can modify a javascript file when using Google Chrome.
Warning: If you refresh the page, all changes will go back to original file. I recommend to copy/paste the code somewhere else if you want to use it again.
Hope this helps!
I ran into the same issue. Turns out I hadn't installed the intermediate certificate on my server (just append it to the bottom of your certificate as seen below).
https://www.digicert.com/ssl-support/pem-ssl-creation.htm
Make sure you have the ca-certificates package installed:
sudo apt-get install ca-certificates
Updating the time may also resolve this:
sudo apt-get install ntpdate
sudo ntpdate -u ntp.ubuntu.com
If you're using a self-signed certificate, you'll probably have to add it to your system manually.
128 characters. This is the max length of the sysname
datatype (nvarchar(128)
).
If both your lists implement IEnumerable interface you can achieve this using LINQ.
list3 = list1.where(i => !list2.contains(i));
Here is a complete jquery plugin that solves this problem:
https://github.com/bigspotteddog/ScrollToFixed
The description of this plugin is as follows:
This plugin is used to fix elements to the top of the page, if the element would have scrolled out of view, vertically; however, it does allow the element to continue to move left or right with the horizontal scroll.
Given an option marginTop, the element will stop moving vertically upward once the vertical scroll has reached the target position; but, the element will still move horizontally as the page is scrolled left or right. Once the page has been scrolled back down past the target position, the element will be restored to its original position on the page.
This plugin has been tested in Firefox 3/4, Google Chrome 10/11, Safari 5, and Internet Explorer 8/9.
Usage for your particular case:
<script src="scripts/jquery-1.4.2.min.js" type="text/javascript"></script>
<script src="scripts/jquery-scrolltofixed-min.js" type="text/javascript"></script>
$(document).ready(function() {
$('#mydiv').scrollToFixed({ marginTop: 250 });
});
Imagine what happens if x[l] is neither 0 nor 1 in the loop. In that case a and b will never be assigned to and have an undefined value. You must initialize them both with some value, for example 0.
For Each Sheet In Worksheets
If UCase(Sheet.Name) = "TEMP" Then
'Your Code when the match is True
Application.DisplayAlerts = False
Sheet.Delete
Application.DisplayAlerts = True
'-----------------------------------
End If
Next Sheet
The \#include
files of gcc are stored in /usr/include
.
The standard include files of g++ are stored in /usr/include/c++
.
That would run simultaneously yes. what if you wanted to run two animations on the same element simultaneously ?
$(function () {
$('#first').animate({ width: '200px' }, 200);
$('#first').animate({ marginTop: '50px' }, 200);
});
This ends up queuing the animations. to get to run them simultaneously you would use only one line.
$(function () {
$('#first').animate({ width: '200px', marginTop:'50px' }, 200);
});
Is there any other way to run two different animation on the same element simultaneously ?
You can implement like a below logic. Suppose you want an array of values.
let test = [ {name:'test',lastname:'kumar',age:30},
{name:'test',lastname:'kumar',age:30},
{name:'test3',lastname:'kumar',age:47},
{name:'test',lastname:'kumar',age:28},
{name:'test4',lastname:'kumar',age:30},
{name:'test',lastname:'kumar',age:29}]
let result1 = test.map(element =>
{
if (element.age === 30)
{
return element.lastname;
}
}).filter(notUndefined => notUndefined !== undefined);
output : ['kumar','kumar','kumar']
Firstly, we just CAN'T make the variable final as its state may be changing during the run of the program and our decisions within the inner class override may depend on its current state.
Secondly, good object-oriented programming practice suggests using only variables/constants that are vital to the class definition as class members. This means that if the variable we are referencing within the anonymous inner class override is just a utility variable, then it should not be listed amongst the class members.
But – as of Java 8 – we have a third option, described here :
https://docs.oracle.com/javase/tutorial/java/javaOO/localclasses.html
Starting in Java SE 8, if you declare the local class in a method, it can access the method's parameters.
So now we can simply put the code containing the new inner class & its method override into a private method whose parameters include the variable we call from inside the override. This static method is then called after the btnInsert declaration statement :-
. . . .
. . . .
Statement statement = null;
. . . .
. . . .
Button btnInsert = new Button(shell, SWT.NONE);
addMouseListener(Button btnInsert, Statement statement); // Call new private method
. . .
. . .
. . .
private static void addMouseListener(Button btn, Statement st) // New private method giving access to statement
{
btn.addMouseListener(new MouseAdapter()
{
@Override
public void mouseDown(MouseEvent e)
{
String name = text.getText();
String from = text_1.getText();
String to = text_2.getText();
String price = text_3.getText();
String query = "INSERT INTO booking (name, fromst, tost,price) VALUES ('"+name+"', '"+from+"', '"+to+"', '"+price+"')";
try
{
st.executeUpdate(query);
}
catch (SQLException e1)
{
e1.printStackTrace(); // TODO Auto-generated catch block
}
}
});
return;
}
. . . .
. . . .
. . . .
You need to change your code to find the row relative to the button which was clicked. Try this:
$(".use-address").click(function() {
var id = $(this).closest("tr").find(".nr").text();
$("#resultas").append(id);
});
I also encountered the same problem, but trying the hints here didn't help, unfortunately.
The only thing that helped was to download the newest version from the Boost page, compile and install it as described in Installing Boost 1.50 on Ubuntu 12.10.
In my case I worked with Boost 1.53.
Some other pre-existing setups from older code that will prevent div page centering L&R are:
img
(like for older external CSS print format controls).div
class.In my case, migrating a Spring 3.1 app up to 3.2.7, my solution was similar to Matthias's but a bit different -- thus why I'm documenting it here:
In my POM I found this dependency and changed it from 6.0 to 7.0:
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
Then later in the POM I upgraded this plugin from 6.0 to 7.0:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
<executions>
<execution>
...
<configuration>
...
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
Try out with mImageCaptureUri.getPath();
By Below Way :
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
//Get your Image Path
String Path=mImageCaptureUri.getPath();
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
System.out.println(mImageCaptureUri);
}
This Python-script[*] does exactly that:
"""
Show/Modify/Append registry env-vars (ie `PATH`) and notify Windows-applications to pickup changes.
First attempts to show/modify HKEY_LOCAL_MACHINE (all users), and
if not accessible due to admin-rights missing, fails-back
to HKEY_CURRENT_USER.
Write and Delete operations do not proceed to user-tree if all-users succeed.
Syntax:
{prog} : Print all env-vars.
{prog} VARNAME : Print value for VARNAME.
{prog} VARNAME VALUE : Set VALUE for VARNAME.
{prog} +VARNAME VALUE : Append VALUE in VARNAME delimeted with ';' (i.e. used for `PATH`).
{prog} -VARNAME : Delete env-var value.
Note that the current command-window will not be affected,
changes would apply only for new command-windows.
"""
import winreg
import os, sys, win32gui, win32con
def reg_key(tree, path, varname):
return '%s\%s:%s' % (tree, path, varname)
def reg_entry(tree, path, varname, value):
return '%s=%s' % (reg_key(tree, path, varname), value)
def query_value(key, varname):
value, type_id = winreg.QueryValueEx(key, varname)
return value
def yield_all_entries(tree, path, key):
i = 0
while True:
try:
n,v,t = winreg.EnumValue(key, i)
yield reg_entry(tree, path, n, v)
i += 1
except OSError:
break ## Expected, this is how iteration ends.
def notify_windows(action, tree, path, varname, value):
win32gui.SendMessage(win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 'Environment')
print("---%s %s" % (action, reg_entry(tree, path, varname, value)), file=sys.stderr)
def manage_registry_env_vars(varname=None, value=None):
reg_keys = [
('HKEY_LOCAL_MACHINE', r'SYSTEM\CurrentControlSet\Control\Session Manager\Environment'),
('HKEY_CURRENT_USER', r'Environment'),
]
for (tree_name, path) in reg_keys:
tree = eval('winreg.%s'%tree_name)
try:
with winreg.ConnectRegistry(None, tree) as reg:
with winreg.OpenKey(reg, path, 0, winreg.KEY_ALL_ACCESS) as key:
if not varname:
for regent in yield_all_entries(tree_name, path, key):
print(regent)
else:
if not value:
if varname.startswith('-'):
varname = varname[1:]
value = query_value(key, varname)
winreg.DeleteValue(key, varname)
notify_windows("Deleted", tree_name, path, varname, value)
break ## Don't propagate into user-tree.
else:
value = query_value(key, varname)
print(reg_entry(tree_name, path, varname, value))
else:
if varname.startswith('+'):
varname = varname[1:]
value = query_value(key, varname) + ';' + value
winreg.SetValueEx(key, varname, 0, winreg.REG_EXPAND_SZ, value)
notify_windows("Updated", tree_name, path, varname, value)
break ## Don't propagate into user-tree.
except PermissionError as ex:
print("!!!Cannot access %s due to: %s" %
(reg_key(tree_name, path, varname), ex), file=sys.stderr)
except FileNotFoundError as ex:
print("!!!Cannot find %s due to: %s" %
(reg_key(tree_name, path, varname), ex), file=sys.stderr)
if __name__=='__main__':
args = sys.argv
argc = len(args)
if argc > 3:
print(__doc__.format(prog=args[0]), file=sys.stderr)
sys.exit()
manage_registry_env_vars(*args[1:])
Below are some usage examples, assuming it has been saved in a file called setenv.py
somewhere in your current path.
Note that in these examples i didn't have admin-rights, so the changes affected only my local user's registry tree:
> REM ## Print all env-vars
> setenv.py
!!!Cannot access HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment:PATH due to: [WinError 5] Access is denied
HKEY_CURRENT_USER\Environment:PATH=...
...
> REM ## Query env-var:
> setenv.py PATH C:\foo
!!!Cannot access HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment:PATH due to: [WinError 5] Access is denied
!!!Cannot find HKEY_CURRENT_USER\Environment:PATH due to: [WinError 2] The system cannot find the file specified
> REM ## Set env-var:
> setenv.py PATH C:\foo
!!!Cannot access HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment:PATH due to: [WinError 5] Access is denied
---Set HKEY_CURRENT_USER\Environment:PATH=C:\foo
> REM ## Append env-var:
> setenv.py +PATH D:\Bar
!!!Cannot access HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment:PATH due to: [WinError 5] Access is denied
---Set HKEY_CURRENT_USER\Environment:PATH=C:\foo;D:\Bar
> REM ## Delete env-var:
> setenv.py -PATH
!!!Cannot access HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment:PATH due to: [WinError 5] Access is denied
---Deleted HKEY_CURRENT_USER\Environment:PATH
[*] Adapted from: http://code.activestate.com/recipes/416087-persistent-environment-variables-on-windows/
Try Collections.shuffle(list).If usage of this method is barred for solving the problem, then one can look at the actual implementation.
TryParse works if your number is less than Int32.MaxValue. This also gives you the opportunity to handle badly formatted strings. Works the same for Int64.MaxValue and Int64.TryParse.
int number;
if(Int32.TryParse(nvarchar, out number))
{
// etc...
number.ToString();
}
There are a few problems here.
1: onBlur expects a callback, and you are calling renderPasswordConfirmError
and using the return value, which is null.
2: you need a place to render the error.
3: you need a flag to track "and I validating", which you would set to true on blur. You can set this to false on focus if you want, depending on your desired behavior.
handleBlur: function () {
this.setState({validating: true});
},
render: function () {
return <div>
...
<input
type="password"
placeholder="Password (confirm)"
valueLink={this.linkState('password2')}
onBlur={this.handleBlur}
/>
...
{this.renderPasswordConfirmError()}
</div>
},
renderPasswordConfirmError: function() {
if (this.state.validating && this.state.password !== this.state.password2) {
return (
<div>
<label className="error">Please enter the same password again.</label>
</div>
);
}
return null;
},
There are several options, including using the method you demonstrate, With, and using a variable.
My preference is option 4 below: Dim
a variable of type Worksheet
and store the worksheet and call the methods on the variable or pass it to functions, however any of the options work.
Sub Test()
Dim SheetName As String
Dim SearchText As String
Dim FoundRange As Range
SheetName = "test"
SearchText = "abc"
' 0. If you know the sheet is the ActiveSheet, you can use if directly.
Set FoundRange = ActiveSheet.UsedRange.Find(What:=SearchText)
' Since I usually have a lot of Subs/Functions, I don't use this method often.
' If I do, I store it in a variable to make it easy to change in the future or
' to pass to functions, e.g.: Set MySheet = ActiveSheet
' If your methods need to work with multiple worksheets at the same time, using
' ActiveSheet probably isn't a good idea and you should just specify the sheets.
' 1. Using Sheets or Worksheets (Least efficient if repeating or calling multiple times)
Set FoundRange = Sheets(SheetName).UsedRange.Find(What:=SearchText)
Set FoundRange = Worksheets(SheetName).UsedRange.Find(What:=SearchText)
' 2. Using Named Sheet, i.e. Sheet1 (if Worksheet is named "Sheet1"). The
' sheet names use the title/name of the worksheet, however the name must
' be a valid VBA identifier (no spaces or special characters. Use the Object
' Browser to find the sheet names if it isn't obvious. (More efficient than #1)
Set FoundRange = Sheet1.UsedRange.Find(What:=SearchText)
' 3. Using "With" (more efficient than #1)
With Sheets(SheetName)
Set FoundRange = .UsedRange.Find(What:=SearchText)
End With
' or possibly...
With Sheets(SheetName).UsedRange
Set FoundRange = .Find(What:=SearchText)
End With
' 4. Using Worksheet variable (more efficient than 1)
Dim MySheet As Worksheet
Set MySheet = Worksheets(SheetName)
Set FoundRange = MySheet.UsedRange.Find(What:=SearchText)
' Calling a Function/Sub
Test2 Sheets(SheetName) ' Option 1
Test2 Sheet1 ' Option 2
Test2 MySheet ' Option 4
End Sub
Sub Test2(TestSheet As Worksheet)
Dim RowIndex As Long
For RowIndex = 1 To TestSheet.UsedRange.Rows.Count
If TestSheet.Cells(RowIndex, 1).Value = "SomeValue" Then
' Do something
End If
Next RowIndex
End Sub
This is an exeprt from Technet (so not sure why the marked answer says named pipes are faster??):
Named Pipes vs. TCP/IP Sockets
In a fast local area network (LAN) environment, Transmission Control Protocol/Internet Protocol (TCP/IP) Sockets and Named Pipes clients are comparable with regard to performance. However, the performance difference between the TCP/IP Sockets and Named Pipes clients becomes apparent with slower networks, such as across wide area networks (WANs) or dial-up networks. This is because of the different ways the interprocess communication (IPC) mechanisms communicate between peers.
For named pipes, network communications are typically more interactive. A peer does not send data until another peer asks for it using a read command. A network read typically involves a series of peek named pipes messages before it starts to read the data. These can be very costly in a slow network and cause excessive network traffic, which in turn affects other network clients.
It is also important to clarify if you are talking about local pipes or network pipes. If the server application is running locally on the computer that is running an instance of SQL Server, the local Named Pipes protocol is an option. Local named pipes runs in kernel mode and is very fast.
For TCP/IP Sockets, data transmissions are more streamlined and have less overhead. Data transmissions can also take advantage of TCP/IP Sockets performance enhancement mechanisms such as windowing, delayed acknowledgements, and so on. This can be very helpful in a slow network. Depending on the type of applications, such performance differences can be significant.
TCP/IP Sockets also support a backlog queue. This can provide a limited smoothing effect compared to named pipes that could lead to pipe-busy errors when you are trying to connect to SQL Server.
Generally, TCP/IP is preferred in a slow LAN, WAN, or dial-up network, whereas named pipes can be a better choice when network speed is not the issue, as it offers more functionality, ease of use, and configuration options.
Instead of using the block approach, which gave me some problems:
IMP imp = [_controller methodForSelector:selector];
void (*func)(id, SEL) = (void *)imp;
I will use NSInvocation, like this:
-(void) sendSelectorToDelegate:(SEL) selector withSender:(UIButton *)button
if ([delegate respondsToSelector:selector])
{
NSMethodSignature * methodSignature = [[delegate class]
instanceMethodSignatureForSelector:selector];
NSInvocation * delegateInvocation = [NSInvocation
invocationWithMethodSignature:methodSignature];
[delegateInvocation setSelector:selector];
[delegateInvocation setTarget:delegate];
// remember the first two parameter are cmd and self
[delegateInvocation setArgument:&button atIndex:2];
[delegateInvocation invoke];
}
From a quick glance on MDN I think you may need to include the .js
at the end of your file name so the import would read
import './course.js'
instead of import './course'
Ref: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import
explanation of nosklo's
answer with examples
note: all __init__.py
files are empty.
main.py
app/ ->
__init__.py
package_a/ ->
__init__.py
fun_a.py
package_b/ ->
__init__.py
fun_b.py
def print_a():
print 'This is a function in dir package_a'
from app.package_a.fun_a import print_a
def print_b():
print 'This is a function in dir package_b'
print 'going to call a function in dir package_a'
print '-'*30
print_a()
from app.package_b import fun_b
fun_b.print_b()
if you run $ python main.py
it returns:
This is a function in dir package_b
going to call a function in dir package_a
------------------------------
This is a function in dir package_a
from app.package_b import fun_b
from app.package_a.fun_a import print_a
so file in folder package_b
used file in folder package_a
, which is what you want. Right??
UPDATE Employee SET Empid=emp3.empid
FROM EMP_Employee AS emp3
WHERE Employee.Empid=emp3.empid
You can set the Hadoop home directory by sending a -Dhadoop.home.dir to the VM. To send this parameters to all your application that you execute inside eclipse, you can set them in Window->Preferences->Java->Installed JREs-> (select your JRE installation) -> Edit.. -> (set the value in the "Default VM arguments:" textbox). You can replace ${HADOOP_HOME} with the path to your Hadoop installation.
In the Git Bash, enter the command:
git remote set-url origin https://NewRepoLink.git
Enter the Credentials
Done
The difference between a non-lateral
and a lateral
join lies in whether you can look to the left hand table's row. For example:
select *
from table1 t1
cross join lateral
(
select *
from t2
where t1.col1 = t2.col1 -- Only allowed because of lateral
) sub
This "outward looking" means that the subquery has to be evaluated more than once. After all, t1.col1
can assume many values.
By contrast, the subquery after a non-lateral
join can be evaluated once:
select *
from table1 t1
cross join
(
select *
from t2
where t2.col1 = 42 -- No reference to outer query
) sub
As is required without lateral
, the inner query does not depend in any way on the outer query. A lateral
query is an example of a correlated
query, because of its relation with rows outside the query itself.
I came here trying to solve a slightly different problem. Maybe this will be useful to someone else:
I create a new branch feature-a
. as part of this branch I create new directories and need to modify .gitignore to suppress some of them. This happens a lot when adding new tools to a project that create various cache folders. .serverless
, .terraform
, etc.
Before I'm ready to merge that back to master I have something else come up, so I checkout master
again, but now git status
picks up those suppressed folders again, since the .gitignore hasn't been merged yet.
The answer here is actually simple, though I had to find this blog to figure it out:
Just checkout the .gitignore file from feature-a
branch
git checkout feature-a -- feature-a/.gitignore
git add .
git commit -m "update .gitignore from feature-a branch"
Steps for Using Group by,Having By and Order by...
Select Attitude ,count(*) from Person
group by person
HAving PersonAttitude='cool and friendly'
Order by PersonName.
Which process uses port in unix;
root> netstat -Aan | grep 3872
output> f1000e000bb5c3b8 tcp 0 0 *.3872 . LISTEN
output> The socket 0xf1000e000bb5c008 is being held by proccess 13959354 (java).
This worked perfectly for me without css. I think css would put some icing on the cake though.
<form>
<label for="First Name" >First Name:</label>
<input type="text" name="username" size="15" maxlength="30" />
<label for="Last Name" >Last Name:</label>
<input type="text" name="username" size="15" maxlength="30" />
</form>
You can find the Python executable with this command:
C:\> where python.exe
It should return something like:
C:\Users\<user>\AppData\Local\enthought\Canopy32\User\python.exe
Open regedit, navigate to HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\<version>\PythonPath
and add or edit the default key with this the value found in the first command.
Logout, login and python should be found. SciKit can now be installed.
See Additional “application paths” in https://docs.python.org/2/using/windows.html#finding-modules for more details.
Using ES6 the javascript becomes a little cleaner
handleFiles(input) {
const file = input.target.files[0];
const reader = new FileReader();
reader.onload = (event) => {
const file = event.target.result;
const allLines = file.split(/\r\n|\n/);
// Reading line by line
allLines.forEach((line) => {
console.log(line);
});
};
reader.onerror = (event) => {
alert(event.target.error.name);
};
reader.readAsText(file);
}
This solution is without height/width specification for the father div so it will be responsive to window resizing and most useful cause horizontal scrollbars appears just if needed.
.container{
padding:20px;
border:dotted 1px;
white-space:nowrap;
overflow-x:auto;
}
.box{
width:100px;
height:180px;
background-color: red;
margin:10px;
display:inline-block
}
Take a look at DEMO
This is the variable for the current value in the pipe line, which is called $PSItem
in Powershell 3 and newer.
1,2,3 | %{ write-host $_ }
or
1,2,3 | %{ write-host $PSItem }
For example in the above code the %{}
block is called for every value in the array. The $_
or $PSItem
variable will contain the current value.
you can use String::replaceAll
like this :
public static void upperCaseAllFirstCharacter(String text) {
String regex = "\\b(.)(.*?)\\b";
String result = Pattern.compile(regex).matcher(text).replaceAll(
matche -> matche.group(1).toUpperCase() + matche.group(2)
);
System.out.println(result);
}
Example :
upperCaseAllFirstCharacter("hello this is Just a test");
Outputs
Hello This Is Just A Test
Just make sure put single space before and after "and" Keyword..
If you like me work from commandline the quick answer is executing
export ANT_OPTS=-Dbuild.sysclasspath=ignore
And then run your ant script again.
Warning: This answer may not be good for the general intent of this question, but I post it here nevertheless, because it solves a partial version of this issue.
You can use lodash's uniqueId
(documentation here). This is not a good uniqueId generator for say, db records, or things that will persist a session in a browser or something like that. But the reason I came here looking for this was solved by using it. If you need a unique id for something transient enough, this will do.
I needed it because I was creating a reusable react component that features a label and a form control. The label needs to have a for="controlId"
attribute, corresponding to the id="controlId"
that the actual form control has (the input or select element). This id is not necessary out of this context, but I need to generate one id for both attributes to share, and make sure this id is unique in the context of the page being rendered. So lodash's function worked just fine. Just in case is useful for someone else.
Finally got the solution here - https://stackoverflow.com/a/49663101/9640177
implementation files('libs/aar-file.aar')
Edit I had one more complication - I had set minifyEnabled true for the library module.
Although Clayton's answer will get you there (eventually), in SQL2005/2008/R2/2012 you have a far easier option:
Right-click on the Database, select Tasks
and then Generate Scripts
, which will launch the Script Wizard. This allows you to generate a single script that can recreate the full database including table/indexes & constraints/stored procedures/functions/users/etc. There are a multitude of options that you can configure to customise the output, but most of it is self explanatory.
If you are happy with the default options, you can do the whole job in a matter of seconds.
If you want to recreate the data in the database (as a series of INSERTS) I'd also recommend SSMS Tools Pack (Free for SQL 2008 version, Paid for SQL 2012 version).
Tha is because getColumnDimensionByColumn receives the column index (an integer starting from 0), not a string.
The same goes for setCellValueByColumnAndRow
As it turns out, autoplay cannot be done on iOS devices (iPhone, iPad, iPod touch) and Android.
See https://stackoverflow.com/a/8142187/2054512 and https://stackoverflow.com/a/3056220/2054512
DateTime.TryParse
This I believe is faster and it means you dont have to use ugly try/catches :)
e.g
DateTime temp;
if(DateTime.TryParse(startDateTextBox.Text, out temp))
{
// Yay :)
}
else
{
// Aww.. :(
}
How about a one-liner using a list comprehension within join?
>>> foobar = "aaa bbb\t\t\tccc\nddd"
>>> print(foobar)
aaa bbb ccc
ddd
>>> print(''.join([c for c in foobar if c not in [' ', '\t', '\n']]))
aaabbbcccddd
If your compiler supports (at least part of) C++11 you could do something like:
for (auto& t : myMap)
std::cout << t.first << " "
<< t.second.first << " "
<< t.second.second << "\n";
For C++03 I'd use std::copy
with an insertion operator instead:
typedef std::pair<string, std::pair<string, string> > T;
std::ostream &operator<<(std::ostream &os, T const &t) {
return os << t.first << " " << t.second.first << " " << t.second.second;
}
// ...
std:copy(myMap.begin(), myMap.end(), std::ostream_iterator<T>(std::cout, "\n"));
This worked for me (though it's for reactjs & tachyons used as inline CSS)
<div className="pa2 cf vh-100-ns" style={{backgroundImage: `url(${a6})`}}>
........
</div>
This takes in css as height: 100vh
Unless you specify a severity of 20 or higher, raiserror
will not stop execution. See the MSDN documentation.
The normal workaround is to include a return
after every raiserror
:
if @whoops = 1
begin
raiserror('Whoops!', 18, 1)
return -1
end
Compare also the difference between {}
and set()
with a single word argument.
>>> a = set('aardvark')
>>> a
{'d', 'v', 'a', 'r', 'k'}
>>> b = {'aardvark'}
>>> b
{'aardvark'}
but both a
and b
are sets of course.
jQuery(document).ready(function(){
jQuery(".head h3").html('Public Offers');
});
Create a table with a normal numeric auto_increment ID, but either define it with ZEROFILL
, or use LPAD
to add zeroes when selecting. Then CONCAT
the values to get your intended behavior. Example #1:
create table so (
id int(3) unsigned zerofill not null auto_increment primary key,
name varchar(30) not null
);
insert into so set name = 'John';
insert into so set name = 'Mark';
select concat('LHPL', id) as id, name from so;
+---------+------+
| id | name |
+---------+------+
| LHPL001 | John |
| LHPL002 | Mark |
+---------+------+
Example #2:
create table so (
id int unsigned not null auto_increment primary key,
name varchar(30) not null
);
insert into so set name = 'John';
insert into so set name = 'Mark';
select concat('LHPL', LPAD(id, 3, 0)) as id, name from so;
+---------+------+
| id | name |
+---------+------+
| LHPL001 | John |
| LHPL002 | Mark |
+---------+------+
Think of Web service as a web api. API is such a general term now so a web service is an interface to functionality, usually business related, that you can get to from the network over a variety of protocols.
#!/usr/local/bin/bash -x
find * /home/www -type f | while read files
do
sedtest=$(sed -n '/^/,/$/p' "${files}" | sed -n '/subdomainA/p')
if [ "${sedtest}" ]
then
sed s'/subdomainA/subdomainB/'g "${files}" > "${files}".tmp
mv "${files}".tmp "${files}"
fi
done
I think the most intuitive way to do this is by giving the children a "wait" prop
, which hides the component for the duration that was passed down from the parent. By setting the default state to hidden, React will still render the component immediately, but it won't be visible until the state has changed. Then, you can set up componentWillMount
to call a function to show it after the duration that was passed via props.
var Child = React.createClass({
getInitialState : function () {
return({hidden : "hidden"});
},
componentWillMount : function () {
var that = this;
setTimeout(function() {
that.show();
}, that.props.wait);
},
show : function () {
this.setState({hidden : ""});
},
render : function () {
return (
<div className={this.state.hidden}>
<p>Child</p>
</div>
)
}
});
Then, in the Parent component, all you would need to do is pass the duration you want a Child to wait before displaying it.
var Parent = React.createClass({
render : function () {
return (
<div className="parent">
<p>Parent</p>
<div className="child-list">
<Child wait={1000} />
<Child wait={3000} />
<Child wait={5000} />
</div>
</div>
)
}
});
Test for presence using the in
operator, then apply the remove
method.
if thing in some_list: some_list.remove(thing)
The remove
method will remove only the first occurrence of thing
, in order to remove all occurrences you can use while
instead of if
.
while thing in some_list: some_list.remove(thing)
This shoot-first-ask-questions-last attitude is common in Python. Instead of testing in advance if the object is suitable, just carry out the operation and catch relevant Exceptions:
try:
some_list.remove(thing)
except ValueError:
pass # or scream: thing not in some_list!
except AttributeError:
call_security("some_list not quacking like a list!")
Off course the second except clause in the example above is not only of questionable humor but totally unnecessary (the point was to illustrate duck-typing for people not familiar with the concept).
If you expect multiple occurrences of thing:
while True:
try:
some_list.remove(thing)
except ValueError:
break
However, with contextlib's suppress() contextmanager (introduced in python 3.4) the above code can be simplified to this:
with suppress(ValueError, AttributeError):
some_list.remove(thing)
Again, if you expect multiple occurrences of thing:
with suppress(ValueError):
while True:
some_list.remove(thing)
Around 1993, Python got lambda
, reduce()
, filter()
and map()
, courtesy of a Lisp hacker who missed them and submitted working patches*. You can use filter
to remove elements from the list:
is_not_thing = lambda x: x is not thing
cleaned_list = filter(is_not_thing, some_list)
There is a shortcut that may be useful for your case: if you want to filter out empty items (in fact items where bool(item) == False
, like None
, zero, empty strings or other empty collections), you can pass None as the first argument:
cleaned_list = filter(None, some_list)
filter(function, iterable)
used to be equivalent to [item for item in iterable if function(item)]
(or [item for item in iterable if item]
if the first argument is None
); in Python 3.x, it is now equivalent to (item for item in iterable if function(item))
. The subtle difference is that filter used to return a list, now it works like a generator expression - this is OK if you are only iterating over the cleaned list and discarding it, but if you really need a list, you have to enclose the filter()
call with the list()
constructor.filter
- along with companions map
and reduce
(they are not gone yet but reduce
was moved into the functools module, which is worth a look if you like high order functions).List comprehensions became the preferred style for list manipulation in Python since introduced in version 2.0 by PEP 202. The rationale behind it is that List comprehensions provide a more concise way to create lists in situations where map()
and filter()
and/or nested loops would currently be used.
cleaned_list = [ x for x in some_list if x is not thing ]
Generator expressions were introduced in version 2.4 by PEP 289. A generator expression is better for situations where you don't really need (or want) to have a full list created in memory - like when you just want to iterate over the elements one at a time. If you are only iterating over the list, you can think of a generator expression as a lazy evaluated list comprehension:
for item in (x for x in some_list if x is not thing):
do_your_thing_with(item)
!=
instead of is not
(the difference is important)Use the sizing utility classes...
h-50
= height 50%h-100
= height 100%http://www.codeply.com/go/Y3nG0io2uE
<div class="container">
<div class="row">
<div class="col-md-8 col-lg-6 B">
<div class="card card-inverse card-primary">
<img src="http://lorempicsum.com/rio/800/500/4" class="img-fluid" alt="Responsive image">
</div>
</div>
<div class="col-md-4 col-lg-3 G">
<div class="row h-100">
<div class="col-md-6 col-lg-6 B h-50 pb-3">
<div class="card card-inverse card-success h-100">
</div>
</div>
<div class="col-md-6 col-lg-6 B h-50 pb-3">
<div class="card card-inverse bg-success h-100">
</div>
</div>
<div class="col-md-12 h-50">
<div class="card card-inverse bg-danger h-100">
</div>
</div>
</div>
</div>
</div>
</div>
Or, for an unknown number of child columns, use flexbox and the cols will fill height. See the d-flex flex-column
on the row
, and h-100
on the child cols.
<div class="container">
<div class="row">
<div class="col-md-8 col-lg-6 B">
<div class="card card-inverse card-primary">
<img src="http://lorempicsum.com/rio/800/500/4" class="img-fluid" alt="Responsive image">
</div>
</div>
<div class="col-md-4 col-lg-3 G ">
<div class="row d-flex flex-column h-100">
<div class="col-md-6 col-lg-6 B h-100">
<div class="card bg-success h-100">
</div>
</div>
<div class="col-md-6 col-lg-6 B h-100">
<div class="card bg-success h-100">
</div>
</div>
<div class="col-md-12 h-100">
<div class="card bg-danger h-100">
</div>
</div>
</div>
</div>
</div>
</div>
Sorry to post on such an old thread, but I tried several of the tips here, and none of them worked for me.
It's slightly different than a text editor, but I found that Beyond Compare could handle an extremely large (3.6 Gig) file on my Vista 32-bit machine.
This is a file that that Emacs, Large Text File Viewer, HexEdit, and Notepad++ all choked on.
-Eric
I had this problem despite:
main()
; andMy eventual fix was the following:
main()
was in a namespace, so was effectively called something::main()
...removing this namespace fixed the problem.I found a good choice to be coc.nvim with the python language server.
It takes a bit of effort to set up. I got frustrated with jedi-vim, because it would always freeze vim for a bit when completing. coc.nvim doesn't do it because it's asyncronous, meaning that . It also gives you linting for your code. It supports many other languages and is highly configurable.
The python language server uses jedi so you get the same completion as you would get from jedi.
I suspect the error is caused by this:
foreach (KeyValuePair<int, int> kvp in rankings)
rankings is a dictionary, which is IEnumerable. By using it in a foreach loop, you're specifying that you want each KeyValuePair from the dictionary in a deferred manner. That is, the next KeyValuePair is not returned until your loop iterates again.
But you're modifying the dictionary inside your loop:
rankings[kvp.Key] = rankings[kvp.Key] + 4;
which isn't allowed...so you get the exception.
You could simply do this
foreach (KeyValuePair<int, int> kvp in rankings.ToArray())
The better solution is to simply move the position of the viewport based on the change in the zoom. The zoom point is simply the point in the old zoom and the new zoom that you want to remain the same. Which is to say the viewport pre-zoomed and the viewport post-zoomed have the same zoompoint relative to the viewport. Given that we're scaling relative to the origin. You can adjust the viewport position accordingly:
scalechange = newscale - oldscale;
offsetX = -(zoomPointX * scalechange);
offsetY = -(zoomPointY * scalechange);
So really you can just pan over down and to the right when you zoom in, by a factor of how much you zoomed in, relative to the point you zoomed at.
You can use SSH to create a tunnel and expose your container in your host.
You can do it in both ways, from container to host and from host to container. But you need a SSH tool like OpenSSH in both (client in one and server in another).
For example, in the container, you can do
$ yum install -y openssh openssh-server.x86_64
service sshd restart
Stopping sshd: [FAILED]
Generating SSH2 RSA host key: [ OK ]
Generating SSH1 RSA host key: [ OK ]
Generating SSH2 DSA host key: [ OK ]
Starting sshd: [ OK ]
$ passwd # You need to set a root password..
You can find the container IP address from this line (in the container):
$ ifconfig eth0 | grep "inet addr" | sed 's/^[^:]*:\([^ ]*\).*/\1/g'
172.17.0.2
Then in the host, you can just do:
sudo ssh -NfL 80:0.0.0.0:80 [email protected]
you can simply do:
const objectDiff = (a, b) => _.fromPairs(_.differenceWith(_.toPairs(a), _.toPairs(b), _.isEqual))
set ROOT=c:\programs
set SRC_ROOT=%ROOT%\System\Source
<?php
// run query
$query = mysql_query("SELECT * FROM table");
// set array
$array = array();
// look through query
while($row = mysql_fetch_assoc($query)){
// add each row returned into an array
$array[] = $row;
// OR just echo the data:
echo $row['username']; // etc
}
// debug:
print_r($array); // show all array data
echo $array[0]['username']; // print the first rows username
Perhaps this can be useful for someone:
In my case, I was getting an array of objects, each containing a date set by Mongoose.
I used:
ng-repeat="comment in post.comments | orderBy : sortComment : true"
And defined the function:
$scope.sortComment = function(comment) {
var date = new Date(comment.created);
return date;
};
This worked for me.
If I understand you correctly you want to close the application even if the user did not click on the close button. You will need to register WindowEvents maybe with addWindowListener() or enableEvents() whichever suits your needs better.
You can then invoke the event with a call to processWindowEvent(). Here is a sample code that will create a JFrame, wait 5 seconds and close the JFrame without user interaction.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class ClosingFrame extends JFrame implements WindowListener{
public ClosingFrame(){
super("A Frame");
setSize(400, 400);
//in case the user closes the window
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
//enables Window Events on this Component
this.addWindowListener(this);
//start a timer
Thread t = new Timer();
t.start();
}
public void windowOpened(WindowEvent e){}
public void windowClosing(WindowEvent e){}
//the event that we are interested in
public void windowClosed(WindowEvent e){
System.exit(0);
}
public void windowIconified(WindowEvent e){}
public void windowDeiconified(WindowEvent e){}
public void windowActivated(WindowEvent e){}
public void windowDeactivated(WindowEvent e){}
//a simple timer
class Timer extends Thread{
int time = 10;
public void run(){
while(time-- > 0){
System.out.println("Still Waiting:" + time);
try{
sleep(500);
}catch(InterruptedException e){}
}
System.out.println("About to close");
//close the frame
ClosingFrame.this.processWindowEvent(
new WindowEvent(
ClosingFrame.this, WindowEvent.WINDOW_CLOSED));
}
}
//instantiate the Frame
public static void main(String args[]){
new ClosingFrame();
}
}
As you can see, the processWindowEvent() method causes the WindowClosed event to be fired where you have an oportunity to do some clean up code if you require before closing the application.
You would want to use __slots__
if you are going to instantiate a lot (hundreds, thousands) of objects of the same class. __slots__
only exists as a memory optimization tool.
It's highly discouraged to use __slots__
for constraining attribute creation.
Pickling objects with __slots__
won't work with the default (oldest) pickle protocol; it's necessary to specify a later version.
Some other introspection features of python may also be adversely affected.
I would recommend you to save the image in the server, and then save the URL in MYSQL database.
First of all, you should do more validation on your image, before non-validated files can lead to huge security risks.
Check the image
if (empty($_FILES['image']))
throw new Exception('Image file is missing');
Save the image in a variable
$image = $_FILES['image'];
Check the upload time errors
if ($image['error'] !== 0) {
if ($image['error'] === 1)
throw new Exception('Max upload size exceeded');
throw new Exception('Image uploading error: INI Error');
}
Check whether the uploaded file exists in the server
if (!file_exists($image['tmp_name']))
throw new Exception('Image file is missing in the server');
Validate the file size (Change it according to your needs)
$maxFileSize = 2 * 10e6; // = 2 000 000 bytes = 2MB
if ($image['size'] > $maxFileSize)
throw new Exception('Max size limit exceeded');
Validate the image (Check whether the file is an image)
$imageData = getimagesize($image['tmp_name']);
if (!$imageData)
throw new Exception('Invalid image');
Validate the image mime type (Do this according to your needs)
$mimeType = $imageData['mime'];
$allowedMimeTypes = ['image/jpeg', 'image/png', 'image/gif'];
if (!in_array($mimeType, $allowedMimeTypes))
throw new Exception('Only JPEG, PNG and GIFs are allowed');
This might help you to create a secure image uploading script with PHP.
Code source: https://developer.hyvor.com/php/image-upload-ajax-php-mysql
Additionally, I suggest you use MYSQLI prepared statements for queries to improve security.
Thank you.
The OP left out some crucial information from the question and only put it in a comment to an answer.
I need to initialize after declaring, because will be different depending on a condition, I mean something like this int myArray[SIZE]; if(condition1) { myArray{x1, x2, x3, ...} } else if(condition2) { myArray{y1, y2, y3, ...} } . . and so on...
With this in mind, all of the possible arrays will need to be stored into data somewhere anyhow, so no memcpy is needed (or desired), only a pointer and a 2d array are required.
//static global since some compilers build arrays from instruction data
//... notably not const though so they can later be modified if needed
#define SIZE 8
static int myArrays[2][SIZE] = {{0,1,2,3,4,5,6,7},{7,6,5,4,3,2,1,0}};
static inline int *init_myArray(_Bool conditional){
return myArrays[conditional];
}
// now you can use:
//int *myArray = init_myArray(1 == htons(1)); //any boolean expression
The not-inlined version gives this resulting assembly on x86_64:
init_myArray(bool):
movzx eax, dil
sal rax, 5
add rax, OFFSET FLAT:myArrays
ret
myArrays:
.long 0
.long 1
.long 2
.long 3
.long 4
.long 5
.long 6
.long 7
.long 7
.long 6
.long 5
.long 4
.long 3
.long 2
.long 1
.long 0
For additional conditionals/arrays, just change the 2 in myArrays to the desired number and use similar logic to get a pointer to the right array.
For those stumbling upon this from MySQL or Oracle background - MySQL supports the LIMIT clause to select a limited number of records, while Oracle uses ROWNUM.
You can't control the timeout due to UnknownHostException
. These are DNS timings. You can only control the connect timeout given a valid host. None of the preceding answers addresses this point correctly.
But I find it hard to believe that you are really getting an UnknownHostException
when you specify an IP address rather than a hostname.
EDIT To control Java's DNS timeouts see this answer.
Of course it would be more simple if you extend jQuery like this:
$.fn.addClassDelay = function(className,delay) {
var $addClassDelayElement = $(this), $addClassName = className;
$addClassDelayElement.addClass($addClassName);
setTimeout(function(){
$addClassDelayElement.removeClass($addClassName);
},delay);
};
after that you can use this function like addClass:
$('div').addClassDelay('clicked',1000);
Your question is a little unclear, but if what you're doing is trying to get your friend's latest changes, then typically what your friend needs to do is to push those changes up to a remote repo (like one hosted on GitHub), and then you fetch or pull those changes from the remote:
Your friend pushes his changes to GitHub:
git push origin <branch>
Clone the remote repository if you haven't already:
git clone https://[email protected]/abc/theproject.git
Fetch or pull your friend's changes (unnecessary if you just cloned in step #2 above):
git fetch origin
git merge origin/<branch>
Note that git pull
is the same as doing the two steps above:
git pull origin <branch>
Here is an example:
#include <iostream>
void by_val(int arg) { arg += 2; }
void by_ref(int&arg) { arg += 2; }
int main()
{
int x = 0;
by_val(x); std::cout << x << std::endl; // prints 0
by_ref(x); std::cout << x << std::endl; // prints 2
int y = 0;
by_ref(y); std::cout << y << std::endl; // prints 2
by_val(y); std::cout << y << std::endl; // prints 2
}
To add disabled attribute
$('#id').attr("disabled", "true");
To remove Disabled Attribute
$('#id').removeAttr('disabled');
The answer of Anuja Patil only works with a single file input on a page. This works if there are more than one. This snippet will also show all files if multiple
is enabled.
<script type="text/javascript">
$('.custom-file input').change(function (e) {
var files = [];
for (var i = 0; i < $(this)[0].files.length; i++) {
files.push($(this)[0].files[i].name);
}
$(this).next('.custom-file-label').html(files.join(', '));
});
</script>
Note that $(this).next('.custom-file-label').html($(this)[0].files.join(', '));
does not work. So that is why the for
loop is needed.
If you never work with mulitple files in the file upload, this simpler snippet can be used.
<script type="text/javascript">
$('.custom-file input').change(function (e) {
if (e.target.files.length) {
$(this).next('.custom-file-label').html(e.target.files[0].name);
}
});
</script>
I had this problem and I solved with this way:
fieldset.scheduler-border {
border: solid 1px #DDD !important;
padding: 0 10px 10px 10px;
border-bottom: none;
}
legend.scheduler-border {
width: auto !important;
border: none;
font-size: 14px;
}
In the case of some programs, these errors are normal and should not be fixed.
I get these error messages when compiling the program phrap (for example). This program happens to contain code that modifies or replaces some built in functions, and when I include the appropriate header files to fix the warnings, GCC instead generates a bunch of errors. So fixing the warnings effectively breaks the build.
If you got the source as part of a distribution that should compile normally, the errors might be normal. Consult the documentation to be sure.
Check if sendmail is enabled, mostly if your server is provided by another company.
360 degrees = 2*pi radians
That means deg2rad(x) = x*pi/180 and rad2deg(x) = 180x/pi;
While
constructs are terminated not with an End While
but with a Wend
.
While counter < 20
counter = counter + 1
Wend
Note that this information is readily available in the documentation; just press F1. The page you link to deals with Visual Basic .NET, not VBA. While (no pun intended) there is some degree of overlap in syntax between VBA and VB.NET, one can't just assume that the documentation for the one can be applied directly to the other.
Also in the VBA help file:
Tip The
Do...Loop
statement provides a more structured and flexible way to perform looping.
You can use the expect
utility to drive all programs that read from a tty (as opposed to stdin, which is what passwd does). Expect comes with ready to run examples for all sorts of interactive problems, like passwd entry.
By Installing Maven you can not expect the settings.xml in your .m2 folder(If may be hidden folder, to unhide just press Ctrl+h). You need to place the file explicitly at that location. After placing the file maven plugin for eclipse will start using that file too.
To find out size of S3 bucket using AWS Console:
Hope this helps.
Just expanding off fusions answer. this extension method works using the jQuery validate plugin. It will validate dates and numbers
jQuery.validator.addMethod("greaterThan",
function(value, element, params) {
if (!/Invalid|NaN/.test(new Date(value))) {
return new Date(value) > new Date($(params).val());
}
return isNaN(value) && isNaN($(params).val())
|| (Number(value) > Number($(params).val()));
},'Must be greater than {0}.');
To use it:
$("#EndDate").rules('add', { greaterThan: "#StartDate" });
or
$("form").validate({
rules: {
EndDate: { greaterThan: "#StartDate" }
}
});
<Button
android:id="@+id/buttonVisaProgress"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="5dp"
android:background="@drawable/shape"
android:onClick="visaProgress"
android:drawableTop="@drawable/ic_1468863158_double_loop"
android:padding="10dp"
android:text="Visa Progress"
android:textColor="@android:color/white" />
shape.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners android:radius="14dp" />
<gradient
android:angle="45"
android:centerColor="#1FA8D1"
android:centerX="35%"
android:endColor="#060d96"
android:startColor="#0e7e1d"
android:type="linear" />
<padding
android:bottom="0dp"
android:left="0dp"
android:right="0dp"
android:top="0dp" />
<size
android:width="270dp"
android:height="60dp" />
<stroke
android:width="3dp"
android:color="#000000" />
If you are lazy using delegate.
extension UICollectionView {
func setItemsInRow(items: Int) {
if let layout = self.collectionViewLayout as? UICollectionViewFlowLayout {
let contentInset = self.contentInset
let itemsInRow: CGFloat = CGFloat(items);
let innerSpace = layout.minimumInteritemSpacing * (itemsInRow - 1.0)
let insetSpace = contentInset.left + contentInset.right + layout.sectionInset.left + layout.sectionInset.right
let width = floor((CGRectGetWidth(frame) - insetSpace - innerSpace) / itemsInRow);
layout.itemSize = CGSizeMake(width, width)
}
}
}
PS: Should be called after rotation too
display
is not an attribute - it's a CSS property. You need to access the style object for this:
document.getElementById('classRight').style.display = 'none';
using remove() method you can able to remove.
getLogout(data){
return this.sessionModel
.remove({session_id: data.sid})
.exec()
.then(data =>{
return "signup successfully"
})
}
this is a good sample for understand directive phases http://codepen.io/anon/pen/oXMdBQ?editors=101
var app = angular.module('myapp', [])
app.directive('slngStylePrelink', function() {
return {
scope: {
drctvName: '@'
},
controller: function($scope) {
console.log('controller for ', $scope.drctvName);
},
compile: function(element, attr) {
console.log("compile for ", attr.name)
return {
post: function($scope, element, attr) {
console.log('post link for ', attr.name)
},
pre: function($scope, element, attr) {
$scope.element = element;
console.log('pre link for ', attr.name)
// from angular.js 1.4.1
function ngStyleWatchAction(newStyles, oldStyles) {
if (oldStyles && (newStyles !== oldStyles)) {
forEach(oldStyles, function(val, style) {
element.css(style, '');
});
}
if (newStyles) element.css(newStyles);
}
$scope.$watch(attr.slngStylePrelink, ngStyleWatchAction, true);
// Run immediately, because the watcher's first run is async
ngStyleWatchAction($scope.$eval(attr.slngStylePrelink));
}
};
}
};
});
html
<body ng-app="myapp">
<div slng-style-prelink="{height:'500px'}" drctv-name='parent' style="border:1px solid" name="parent">
<div slng-style-prelink="{height:'50%'}" drctv-name='child' style="border:1px solid red" name='child'>
</div>
</div>
</body>
This
url = new URL("http://10.0.2.2:8080/HelloServlet/PDRS?param1="+lat+"¶m2="+lon);
must work. For whatever strange reason1, you need ?
before the first parameter and &
before the following ones.
Using a compound parameter like
url = new URL("http://10.0.2.2:8080/HelloServlet/PDRS?param1="+lat+"_"+lon);
would work, too, but is surely not nice. You can't use a space there as it's prohibited in an URL, but you could encode it as %20
or +
(but this is even worse style).
1 Stating that ?
separates the path and the parameters and that &
separates parameters from each other does not explain anything about the reason. Some RFC says "use ? there and & there", but I can't see why they didn't choose the same character.
In C# it is not possible to call another constructor from inside the method body. You can call a base constructor this way: foo(args):base() as pointed out yourself. You can also call another constructor in the same class: foo(args):this().
When you want to do something before calling a base constructor, it seems the construction of the base is class is dependant of some external things. If so, you should through arguments of the base constructor, not by setting properties of the base class or something like that
One line
printf "\x$(printf %x 65)"
Two lines
set $(printf %x 65)
printf "\x$1"
Here is one if you do not mind using awk
awk 'BEGIN{printf "%c", 65}'
Resolved it in 2 minutes downtime :)
Just move your folder, add symlink, then tune permissions.
sudo service mongod stop
sudo mv mongodb /new/disk/mongodb/
sudo ln -s /new/disk/mongodb/ /var/lib/mongodb
sudo chown mongodb:mongodb /new/disk/mongodb/
sudo service mongod start
# test if mongodb user can access new location:
sudo -u mongodb -s cd /new/disk/mongodb/
# resolve other permissions issues if necessary
sudo usermod -a -G <newdisk_grp> mongodb
If the table is InnoDB, see http://dev.mysql.com/doc/refman/5.1/en/innodb-consistent-read.html -- it uses consistent-read (no-locking mode) for SELECTs "that do not specify FOR UPDATE or LOCK IN SHARE MODE if the innodb_locks_unsafe_for_binlog option is set and the isolation level of the transaction is not set to SERIALIZABLE. Thus, no locks are set on rows read from the selected table".