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How do I trim leading/trailing whitespace in a standard way?
...e's a bug. dtab[*d] does not cast *d to unsigned int before using it as an array index. On a system with signed char this will read up to dtab[-127] which will cause bugs and possibly crash.
– Zan Lynx
Dec 12 '13 at 1:20
...
Storing JSON in database vs. having a new column for each key
...es and phone numbers for a contact, where storing them as values in a JSON array is much easier to manage than multiple separate tables
Saving arbitrary key/value user preferences (where the value can be boolean, textual, or numeric, and you don't want to have separate columns for different data typ...
Setting environment variables on OS X
...sx-env-sync</string>
<key>ProgramArguments</key>
<array>
<string>bash</string>
<string>-l</string>
<string>-c</string>
<string>
$HOME/.osx-env-sync.sh
</string>
</array>
<key>RunAtLo...
Concurrent HashSet in .NET Framework?
...ckHeld) _lock.ExitWriteLock();
}
}
public void CopyTo(T[] array, int arrayIndex)
{
_lock.EnterWriteLock();
try
{
_hashSet.CopyTo(array, arrayIndex);
}
finally
{
if (_lock.IsWriteLockHeld) _lock.ExitWriteLock...
What's the difference between size_t and int in C++?
... backward compatibility) but size_t defined as 64 bits (so you can declare arrays and structures more than 4 GiB in size) on 64-bit platforms. If a long int is also 64-bits, this is called the LP64 convention; if long int is 32 bits but long long int and pointers are 64 bits, that’s LLP64. You al...
Database development mistakes made by application developers [closed]
...bles.
Just this week I ran across some code where someone had imploded an array and inserted it into a single field in a database. Normalizing that would be to treat element of that array as a separate row in a child table (ie a one-to-many relationship).
This also came up in Best method for stor...
Mongodb Explain for Aggregation framework
... new aggregation stages and expressions including support for working with arrays, strings, and facets.
There are also a number of Aggregation Pipeline Optimizations that automatically happen depending on your MongoDB server version. For example, adjacent stages may be coalesced and/or reordered ...
What exactly does Perl's “bless” do?
...er what the reference is to, it can be to a hash (most common case), to an array (not so common), to a scalar (usually this indicates an inside-out object), to a regular expression, subroutine or TYPEGLOB (see the book Object Oriented Perl: A Comprehensive Guide to Concepts and Programming Technique...
What is a “thread” (really)?
...the computations.
EDIT: (Computations like adding two numbers, sorting an array, basically executing the code that has been written)
Now moving on to the definition of a thread.
A thread is a basic unit of CPU utilization; it comprises a thread ID, a program
counter, a register set, and a ...
arrayfun can be significantly slower than an explicit loop in matlab. Why?
Consider the following simple speed test for arrayfun :
2 Answers
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