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When to use %r instead of %s in Python? [duplicate]
...
An important difference when using these in string formatting is that %r will also include the delimiting quotes. print('Text: %r' % 'Hello') -> Text: 'Hello', print('Text: %s' % 'Hello') -> Text Hello
– Markus
Jan 10 '18 at...
Get the current script file name
...o($filename, PATHINFO_FILENAME);
}
var_dump(chopExtension('bob.php')); // string(3) "bob"
var_dump(chopExtension('bob.i.have.dots.zip')); // string(15) "bob.i.have.dots"
Using standard string library functions is much quicker, as you'd expect.
function chopExtension($filename) {
return subst...
How to echo or print an array in PHP?
...t;pre>";
var_dump($arr);
echo "</pre>";
array(3) {
[0]=>
string(1) "a"
[1]=>
string(1) "b"
[2]=>
string(1) "c"
}
var_export()
Displays structured information about the given variable that returned representation is valid PHP code.
echo "<pre>";
var_export(...
How is CountDownLatch used in Java Multithreading?
...mplements Runnable {
CountDownLatch latch;
long workDuration;
String name;
public ProcessThread(String name, CountDownLatch latch, long duration){
this.name= name;
this.latch = latch;
this.workDuration = duration;
}
public void run() {
try ...
Cookie overflow in rails application?
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You've got a 4kb limit on what you can store in a cookie, and when Rails converts your object into text for writing to the cookie its probably bigger than that limit.
Ruby on Rails ActionDispatch::Cookies::CookieOverflow error
That way this CookieOverflow Error occurs.
The easies...
How to use a WSDL
...use (you will use all the settings except the URL), and the remoteURL is a string representing the URL to connect to (instead of the one contained in the config).
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Convert column classes in data.table
... dt[, Quarter:=as.character(Quarter)]
str(dtnew)
Classes ‘data.table’ and 'data.frame': 10 obs. of 3 variables:
$ ID : Factor w/ 2 levels "A","B": 1 1 1 1 1 2 2 2 2 2
$ Quarter: chr "1" "2" "3" "4" ...
$ value : num -0.838 0.146 -1.059 -1.197 0.282 ...
Using lapply and as.charac...
Rails Root directory path?
... 3 and newer:
Rails.root
which returns a Pathname object. If you want a string you have to add .to_s. If you want another path in your Rails app, you can use join like this:
Rails.root.join('app', 'assets', 'images', 'logo.png')
In Rails 2 you can use the RAILS_ROOT constant, which is a string...
java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused
...
in android
Replace: String webServiceUrl = "http://localhost:8080/Service1.asmx"
With : String webServiceUrl = "http://10.0.2.2:8080/Service1.asmx"
Good luck!
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Convert one date format into another in PHP
...o be a proper timestamp (seconds since January 1, 1970). You are passing a string, which date() can't recognize.
You can use strtotime() to convert a date string into a timestamp. However, even strtotime() doesn't recognize the y-m-d-h-i-s format.
PHP 5.3 and up
Use DateTime::createFromFormat. It...