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What is the difference between Polymer elements and AngularJS directives?
...ng the underlying platform APIs in their own frameworks.
^ This is a huge win IMO. In a world where web developers have powerful tools (Shadow DOM, Custom Elements), framework authors also can utilize these primitives to create better frameworks. Most of them currently go through great hoops to "ge...
How does C compute sin() and other math functions?
... use.
When x is very very close to 0, sin(x) == x is the right answer.
A bit further out, sin(x) uses the familiar Taylor series. However, this is only accurate near 0, so...
When the angle is more than about 7°, a different algorithm is used, computing Taylor-series approximations for both sin(x...
Can hash tables really be O(1)?
... your runtime depends on the dataset you're running on.
Consider the following pseudocode of the get method of a hash table. Here I'm assuming we handle collision by chaining, so each entry of the table is a linked list of (key,value) pairs. We also assume the number of buckets m is fixed but is O(...
gdb: how to print the current line or find the current line number?
...r will next attempt to execute. The instruction pointer is called ip in 16-bit mode, eip in 32-bit mode,and rip in 64-bit mode.
more detail here
all registers available on gdb execution can be shown with:
(gdb) info registers
with it you can find which mode your program is running (looking whi...
Could not load file or assembly 'xxx' or one of its dependencies. An attempt was made to load a prog
...ing built for x86-only while the rest is being built for any CPU/x64. This bit me, too. Are you running an x64 (or uh... IA64)?
Check the project properties and make sure everything is being built for "Any CPU". f you're in Visual Studio, you can check for everything by going to the "x86" or "Any C...
PHPMailer character encoding issues
...the list & exact spelling.
Also the default encoding of PHPMailer is 8bit which can be problematic with UTF-8 data. To fix this you can do:
$mail->Encoding = 'base64';
Take note that 'quoted-printable' would probably work too in these cases (and maybe even 'binary'). For more details you ...
What is a CSRF token ? What is its importance and how does it work?
... it is implied by your login.)
You visit www.cute-cat-pictures.org, not knowing that it is a malicious site.
If the owner of that site knows the form of the above request (easy!) and correctly guesses you are logged into mybank.com (requires some luck!), they could include on their page a request li...
Converting between datetime, Timestamp and datetime64
...mport numpy
>>> numpy.datetime64('2002-06-28T01:00:00.000000000+0100').astype(datetime)
datetime.datetime(2002, 6, 28, 0, 0)
>>> numpy.__version__
'1.6.2' # current version available via pip install numpy
I can reproduce the long value on numpy-1.8.0 installed as:
pip install g...
How to obtain the number of CPUs/cores in Linux from the command line?
...format:
# lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 4
CPU socket(s): 2
NUMA node(s): 1
Vendor ID: G...
How to iterate over values of an Enum having flags?
...ave a variable holding a flags enum, can I somehow iterate over the single-bit values in that specific variable? Or do I have to use Enum.GetValues to iterate over the entire enum and check which ones are set?
...