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How to compare strings in Bash
...you want to do something when they don't match, replace = with !=. You can read more about string operations and arithmetic operations in their respective documentation.
Why do we use quotes around $x?
You want the quotes around $x, because if it is empty, your Bash script encounters a syntax erro...
Printing a variable memory address in swift
...s some Pointer Types that can be used when interacting with C, and you can read about them here: Swift Pointer Types
Moreover, you can understand more about them exploring their declaration (cmd+click on the type), to understand how to convert a type of pointer into another
var aString : NSStri...
Enum type constraints in C# [duplicate]
...(k))
Console.WriteLine(" {0} same as {1} Or {2}: {3} ", IO.FileAccess.ReadWrite, IO.FileAccess.Read, IO.FileAccess.Write, _
Enums.HasFlags(IO.FileAccess.ReadWrite, IO.FileAccess.Read Or IO.FileAccess.Write))
' These fail to compile as expected:
'Console.WriteLine(...
Why is “import *” bad?
...rted and can't easily find from which module a certain thing was imported (readability).
Because you can't use cool tools like pyflakes to statically detect errors in your code.
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What's a monitor in Java?
...nism to control concurrent access to an object.
This allows you to do:
Thread 1:
public void a()
{
synchronized(someObject) {
// do something (1)
}
}
Thread 2:
public void b()
{
synchronized(someObject) {
// do something else (2)
}
}
This prevents Threads 1 an...
How to delete and replace last line in the terminal using bash?
...
echo a carriage return with \r
seq 1 1000000 | while read i; do echo -en "\r$i"; done
from man echo:
-n do not output the trailing newline
-e enable interpretation of backslash escapes
\r carriage return
...
How to send a JSON object over Request with Android?
...TP Client. Here's a code sample on how to do it. You should create a new thread for network activities so as not to lock up the UI thread.
protected void sendJson(final String email, final String pwd) {
Thread t = new Thread() {
public void run() {
Looper.pr...
Origin is not allowed by Access-Control-Allow-Origin
I read about cross domain ajax requests, and understand the underlying security issue. In my case, 2 servers are running locally, and like to enable cross domain requests during testing.
...
ASP.NET MVC Relative Paths
...ent, therefore, reducing one more thing the server has to do? I thought i read somewhere the more you can avoid having the server process, the better - especially with static content like *.js paths? I realize this uses minimal resources, but if you had a couple hundred/thousand Url.Content() in y...
How can I remove a character from a string using Javascript?
...:
mystring.replace(/\/r/, '/')
Now for the excessive explanation:
When reading/writing a regEx pattern think in terms of: <a character or set of charcters> followed by <a character or set of charcters> followed by <...
In regEx <a character or set of charcters> could be one...