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What does $$ (dollar dollar or double dollar) mean in PHP?
....
For example, if you consider this portion of code :
$real_variable = 'test';
$name = 'real_variable';
echo $$name;
You will get the following output :
test
Here :
$real_variable contains test
$name contains the name of your variable : 'real_variable'
$$name mean "the variable thas has i...
Shell script to send email [duplicate]
.../sh
#set -x
LANG=fr_FR
# ARG
FROM="foo@bar.com"
TO="foo@bar.com"
SUBJECT="test é"
MSG="BODY éé"
FILES="fic1.pdf fic2.pdf"
# http://fr.wikipedia.org/wiki/Multipurpose_Internet_Mail_Extensions
SUB_CHARSET=$(echo ${SUBJECT} | file -bi - | cut -d"=" -f2)
SUB_B64=$(echo ${SUBJECT} | uuencode --base6...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...error messages are different. Here's the one for IntMethod(GetString):
Test.cs(12,9): error CS1502: The best
overloaded method match for
'Program.IntMethod(int)' has some
invalid arguments
In other words, section 7.4.3.1 of the spec can't find any applicable function members.
No...
Set timeout for ajax (jQuery)
...ad the $.ajax documentation, this is a covered topic.
$.ajax({
url: "test.html",
error: function(){
// will fire when timeout is reached
},
success: function(){
//do something
},
timeout: 3000 // sets timeout to 3 seconds
});
You can get see what type of e...
Differences between Ant and Maven [closed]
...from the command line will process resources, compile source, execute unit tests, create a JAR, and install the JAR in a local repository for reuse in other projects. Without modification, you can run mvn site and then find an index.html file in target/site that contains links to JavaDoc and a few ...
Java “user.dir” property - what exactly does it mean?
I want to use user.dir dir as a base dir for my unit tests (that creates a lot of files). Is it correct that this property points to the current working directory (e.g. set by the 'cd' command)?
...
When is it appropriate to use UDP instead of TCP? [closed]
...n you expect from a guy with a 2 digit rep? Nonetheless, I just now ran a test out of curiosity. The test read 1 million records (select * from sometable). I set the number of records to return with each individual client request to be 1, 10, and then 100 (three test runs with each protocol). Th...
Best way to check if a URL is valid
...l('/'); // for my case https://www.xrepeater.com
$posted_url = "home";
// Test with one by one
/*$posted_url = "/home";
$posted_url = "xrepeater.com";
$posted_url = "www.xrepeater.com";
$posted_url = "http://www.xrepeater.com";
$posted_url = "https://www.xrepeater.com";
$posted_url = "https:/...
Jquery select all elements that have $jquery.data()
...d simple way to select them is:
$('[data-myAttr]')
More Information:
I tested a lot of things.
Using $('[data-myAttr!=""]') doesn't work for all cases. Because elements that do not have a data-myAttr set, will have their data-myAttr equal to undefined and $('[data-myAttr!=""]') will select thos...
Effective way to find any file's Encoding
... to define what you consider the default encoding in your context.
I have tested this successfully with files with BOM for UTF8, UTF16/Unicode (LE & BE) and UTF32 (LE & BE). It does not work for UTF7.
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