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Test if a variable is a list or tuple
...e you can surely pop elements from it, but it does not guarantee a certain order, which is a very dangerous thing for certain algorithms. In the cases when ordering of the elements does matter, an algorithm using this snippet could potentially generate different results on different runs!
...
Get the IP address of the machine
...se strace ip r get 1.1.1.1 and follow the yellow brick road.
Set it with /etc/hosts
This is my recommendation if you want to stay in control
You can create an entry in /etc/hosts like
80.190.1.3 publicinterfaceip
Then you can use this alias publicinterfaceip to refer to your public interfa...
What's the point of Spring MVC's DelegatingFilterProxy?
...lements Filter interface in applicationContext, and i want to execute in a order, then how can i make it?
– Abhishek Nayak
Nov 26 '14 at 12:45
...
Why is it common to put CSRF prevention tokens in cookies?
... only for ajax requests (where JS needs to know the csrf cookie's value in order to resend it on next request in the second channel (either as form data or header)). There's no reason to require the csrf token be HttpOnly if the session cookie is already HttpOnly (to protect against XSS) since csrf ...
Batch script loop
...this:
for /l %x in (1, 1, 100) do (
echo %x
copy %x.txt z:\whatever\etc
)
or in a batch file
for /l %%x in (1, 1, 100) do (
echo %%x
copy %%x.txt z:\whatever\etc
)
Key:
/l denotes that the for command will operate in a numerical fashion, rather than operating on a set of files
%x i...
How to convert TimeStamp to Date in Java?
...( ZoneId.of( "Africa/Tunis" ) )
.toEpochSecond()
…
"SELECT * FROM orders WHERE placed >= ? AND placed < ? ; "
…
myPreparedStatement.setObject( 1 , start )
myPreparedStatement.setObject( 2 , stop )
java.time
You are using troublesome old date-time classes that are now legacy, s...
Insert Update trigger how to determine if insert or update
...DECLARE @LINE_NO smallint
DECLARE @SHIPPED_QTY decimal(14,4)
DECLARE @CUST_ORDER_ID varchar(15)
--
-- Determine if this is an INSERT,UPDATE, or DELETE Action
--
DECLARE @Action as char(1)
DECLARE @Count as int
SET @Action = 'I' -- Set Action to 'I'nsert by default.
SELECT @Count = COUNT(*) FROM DEL...
How to change the URI (URL) for a remote Git repository?
... I also had to git remote set-url --push origin git://... in order to set the origin ... (push) url.
– jpillora
Jun 2 '14 at 9:12
4
...
Why fragments, and when to use fragments instead of activities?
...tures like the ActionBar, with tabs, overflow, split action bar, viewpager etc.
Bonus 2
The best way to communicate between fragments are intents. When you press something in a Fragment you would typically call StartActivity() with data on it. The intent is passed on to all fragments of the a...
Call Go functions from C
...yAdd(a, b int) int {
return int( C.doAdd( C.int(a), C.int(b)) )
}
The order in which everything is called is as follows:
foo.MyAdd(a, b) ->
C.doAdd(a, b) ->
C.goCallbackHandler(a, b) ->
foo.goCallbackHandler(a, b)
The key to remember here is that a callback function must...