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Why are global variables evil? [closed]
... globals is a horrible idea, one reason might be the inability to properly test functions that update some arbitrary dictionary that exists "somewhere". A codebase with globals cannot be actually proved functional.
– Tomasz Sosiński
Nov 23 '17 at 13:20
...
What is the difference between string primitives and String objects in JavaScript?
...JavaScript has two main type categories, primivites and objects.
var s = 'test';
var ss = new String('test');
The single quote/double quote patterns are identical in terms of functionality. That aside, the behaviour you are trying to name is called auto-boxing. So what actually happens is that a ...
Including all the jars in a directory within the Java classpath
...e following:
Use straight quotes (")
Use *, not *.jar
Windows
java -cp "Test.jar;lib/*" my.package.MainClass
Unix
java -cp "Test.jar:lib/*" my.package.MainClass
This is similar to Windows, but uses : instead of ;. If you cannot use wildcards, bash allows the following syntax (where lib is the ...
Why is reading lines from stdin much slower in C++ than Python?
...a look at what happens under the hood, and I've used dtruss/strace on each test.
C++
./a.out < in
Saw 6512403 lines in 8 seconds. Crunch speed: 814050
syscalls sudo dtruss -c ./a.out < in
CALL COUNT
__mac_syscall 1
...
How to run a PowerShell script
...
Type:
powershell -executionpolicy bypass -File .\Test.ps1
NOTE: Here Test.ps1 is the PowerShell script.
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Test whether string is a valid integer
...here. I'm extremely surprised none of the answers mention the simplest, fastest, most portable solution; the case statement.
case ${variable#[-+]} in
*[!0-9]* | '') echo Not a number ;;
* ) echo Valid number ;;
esac
The trimming of any sign before the comparison feels like a bit of a hack, bu...
How do I copy a folder from remote to local using scp? [closed]
...eate ssh aliases
Then, for example if you have this ~/.ssh/config:
Host test
User testuser
HostName test-site.com
Port 22022
Host prod
User produser
HostName production-site.com
Port 22022
you'll save yourself from password entry and simplify scp syntax like this:
scp ...
Min/Max of dates in an array?
...
Code is tested with IE,FF,Chrome and works properly:
var dates=[];
dates.push(new Date("2011/06/25"))
dates.push(new Date("2011/06/26"))
dates.push(new Date("2011/06/27"))
dates.push(new Date("2011/06/28"))
var maxDate=new Date(Math...
Backbone.js: get current route
...utes : {
"home" : "home",
"user(:/uid)" : "user",
"test" : "completelyDifferent"
},
home : function() {
// Home route
},
user : function(uid) {
// User route
},
// Gets the current route callback function name
// or current hash ...
How can javascript upload a blob?
...
Try this
var fd = new FormData();
fd.append('fname', 'test.wav');
fd.append('data', soundBlob);
$.ajax({
type: 'POST',
url: '/upload.php',
data: fd,
processData: false,
contentType: false
}).done(function(data) {
console.log(data);
});
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