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An “and” operator for an “if” statement in Bash
...ename; then foo bar; fi, etc. annoying, on most systems you find a program called [ which is in fact only a symlink to the test program. When test is called as [, you have to add ] as the last positional argument.
So if test -f filename is basically the same (in terms of processes spawned) as if [ -...
curl -GET and -X GET
Curl offers a series of different http method calls that are prefixed with a X, but also offers the same methods without. I've tried both and I can't seem to figure out the difference. Can someone explain to me quickly how these two operations differ?
...
What are the best practices for catching and re-throwing exceptions?
...straction (with exception chaining)
A third case is where you want to logically group many possible failures under a bigger umbrella. An example for logical grouping:
class ComponentInitException extends Exception {
// public constructors etc as in Exception
}
class Component {
public fun...
How to reliably open a file in the same directory as a Python script
...ath(
os.path.join(os.getcwd(), os.path.dirname(__file__)))
The join() call prepends the current working directory, but the documentation says that if some path is absolute, all other paths left of it are dropped. Therefore, getcwd() is dropped when dirname(__file__) returns an absolute path.
Al...
How to specify id when uses include in layout xml file
...ml file, I have included other layout xml file (each
with a different android id).
11 Answers
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How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...
Basically elaborating on what's outlined here.
Here's how it works: let's say we have a function that takes a number from zero through nine, adds three and, if the result is greater than ten, subtracts ten. So f(2) = 5, f(8) = 1...
when using AlertDialog.Builder with EditText, the Soft Keyboard doesn't pop
...
When you call showDialog() to show a Dialog created using AlertDialog in onCreateDialog()
You should put the code in onPrepareDialog():
@Override
protected void onPrepareDialog (int id, Dialog dialog, Bundle args)
{
TextView editT...
MySQL INNER JOIN select only one row from second table
...
You need to have a subquery to get their latest date per user ID.
SELECT a.*, c.*
FROM users a
INNER JOIN payments c
ON a.id = c.user_ID
INNER JOIN
(
SELECT user_ID, MAX(date) maxDate
FROM payments
GROUP BY user_ID
) b ON c.user_ID = b....
How to make Entity Framework Data Context Readonly
... public override int SaveChanges()
{
// Throw if they try to call this
throw new InvalidOperationException("This context is read-only.");
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
// Need this since there is no DbSet<Custom...
How to return raw string with ApiController?
...
I call the following webapi2 controller method from an mvc controller method:
<HttpPost>
Public Function TestApiCall(<FromBody> screenerRequest As JsonBaseContainer) As IHttpActionResult
Dim response = Me.Reque...