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Divide a number by 3 without using *, /, +, -, % operators
...3 + a/1000*3 + (..). In binary it's almost the same: 1 / 3 = 0.0101010101 (base 2), which leads to a / 3 = a/4 + a/16 + a/64 + (..). Dividing by 4 is where the bit shift comes from. The last check on num==3 is needed because we've only got integers to work with.
– Yorick Sijsli...
make iframe height dynamic based on content inside- JQUERY/Javascript
... if (PIXEL.test(value)) {
return parseInt(value,base);
}
var
style = el.style.left,
runtimeStyle = el.runtimeStyle.left;
el.runtimeStyle.left = el.currentStyle.left;
el.style.left = value ||...
Sorting data based on second column of a file
...
You also need to use -n to sort based on ages (numeric sort). Otherwise '11' will come before '2'.
– Matt Ryall
Jun 22 '11 at 11:24
...
How to send email attachments?
...
Here's another:
import smtplib
from os.path import basename
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
def send_mail(send_from, send_to...
Why does C++ not allow inherited friendship?
...e to change Foo as doing so would introduce breaking changes into the code base (as I could not modify all class derived from Bar).
Thus if friendship was inherited you are inadvertently introducing a restriction on the ability to modify a class. This is undesirable as you basically render useless ...
Simplest two-way encryption using PHP
...
Since PHP 7 the mcrypt function is remove from php codebase. So when using the latest version of php (which should be standard) you are not able to use this deprecated function anymore.
– Alexander Behling
Sep 12 '19 at 13:09
...
Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety
... system-level dependencies. This means pip will not install RPM(s) (Redhat based systems) or DEB(s) (Debian based systems).
To install system dependencies you will need to use one of the following methods depending on your system.
Ubuntu/Debian:
apt-get install libfreetype6-dev
To search for pa...
How to see what will be updated from repository before issuing “svn update” command?
...ated (without actually updating), run
command:
$ svn merge --dry-run -r BASE:HEAD .
if you want to know what content of a particular file has been changed in svn
server repository compared with your working copy, run command:
$ svn diff -r BASE:HEAD ./pathToYour/file
if you want to know wh...
How to add -Xlint:unchecked to my Android Gradle based project?
...d developers. Which is a problem for a thread entitled "... Android gradle based project".
– Robin Davies
May 23 '18 at 22:40
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show 1 more ...
Dictionary returning a default value if the key does not exist [duplicate]
...ctionaries when I need default values.
I wish this were just part of the base Dictionary class.
public class DictionaryWithDefault<TKey, TValue> : Dictionary<TKey, TValue>
{
TValue _default;
public TValue DefaultValue {
get { return _default; }
set { _default = value; }
...