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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...are variations on Bash Shell Expansions. Expansions happen in a particular order, and some have specific use cases.
Braces as Token Delimiters
The ${var} syntax is primarily used for delimiting ambiguous tokens. For example, consider the following:
$ var1=foo; var2=bar; var12=12
$ echo $var12
12
...
What is the correct way to make a custom .NET Exception serializable?
... sure you call through to base.GetObjectData(info, context) at the end, in order to let the base class save its own state.
SerializableExceptionWithCustomProperties.cs:
namespace SerializableExceptions
{
using System;
using System.Collections.Generic;
using System.Runtime.Serializati...
What is the most appropriate way to store user settings in Android application
... an endless loop.
I had earlier suggested adding a "hidden" preference in order to accomplish this. It's definitely not the best way. I'm going to present two other options that I consider to be more viable.
First, the simplest, is in a preferenceChangeListener, you can grab the entered value, ...
When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
...append callbacks to the "inner" Ajax call without exposing the actual flow/order of the calls.
In general, deferred objects provide an interesting way to decouple your code :)
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Difference between $(this) and event.target?
... })
})
</script>
Note that I use $ to wrap the dom element in order to create a jQuery object, which is how we always do.
You would find that for the first case, this ,event.currentTarget,event.target are all referenced to the same element.
While in the second case, when the event del...
Accessing inactive union member and undefined behavior?
... initial sequence (C99, §6.5.2.3/5):
One special guarantee is made in order to simplify the use of unions: if a union contains
several structures that share a common initial sequence (see below), and if the union
object currently contains one of these structures, it is permitted to inspect ...
How do I include a JavaScript file in another JavaScript file?
...u can load one or many scripts with a fetch call using promises to control order of execution for script dependencies using the Fetch Inject library:
fetchInject([
'https://cdn.jsdelivr.net/momentjs/2.17.1/moment.min.js'
]).then(() => {
console.log(`Finish in less than ${moment().endOf('year...
Stack vs heap allocation of structs in Go, and how they relate to garbage collection
...nction call, the function value and arguments are evaluated in
the usual order. After they are evaluated, the parameters of the call
are passed by value to the function and the called function begins
execution. The return parameters of the function are passed by value
back to the calling fun...
Is SHA-1 secure for password storage?
...ffline attack is an attack where the attacker has all the data he needs in order to "test" passwords; e.g. the attacker could get a copy of the database holding the hashed passwords. In an offline attack, the attacker is limited only by his computational resources. Conversely, an online attack is an...
Can I multiply strings in Java to repeat sequences? [duplicate]
...
You have to make some assumptions in order to solve real world problems. In this case, I'm using maven on my current project. I have a pom.xml set up with the commons-lang dependency. It made it easier for me to answer his question, in short. And I'm not exactly...