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Why is the Windows cmd.exe limited to 80 characters wide?
...ffer size (line width and scrollback) and the window size (viewport size). If you started cmd from a shortcut, you can save these settings for future sessions.
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Allow user to select camera or gallery for image
... void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == YOUR_SELECT_PICTURE_REQUEST_CODE) {
final boolean isCamera;
if (data == null) {
isCamera = true;
} else {
...
redirect COPY of stdout to log file from within bash script itself
...&1
echo "foo"
echo "bar" >&2
Note that this is bash, not sh. If you invoke the script with sh myscript.sh, you will get an error along the lines of syntax error near unexpected token '>'.
If you are working with signal traps, you might want to use the tee -i option to avoid disrupt...
Average of 3 long integers
... can give a result that is off by one, namely rounded up rather than down, if negative values for the variables are allowed. For instance if x,y are positive multiples of 3, and z is -2, you get (x+y)/3 which is too much.
– Marc van Leeuwen
May 30 '14 at 15:15
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How do I find out if first character of a string is a number?
In Java is there a way to find out if first character of a string is a number?
5 Answers
...
基于PECL OAuth打造微博应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
..._SECRET',
OAUTH_SIG_METHOD_HMACSHA1,
OAUTH_AUTH_TYPE_FORM
);
if (empty($_GET['oauth_verifier'])) {
$callback_url = "http://{$_SERVER['HTTP_HOST']}{$_SERVER['REQUEST_URI']}";
$request_token = $oauth->getRequestToken($request_token_url, $callback_url);
$_SESSION['oauth...
Uppercase or lowercase doctype?
...>
In XML serializations (i.e. XHTML) the DOCTYPE is not required, but if you use it, DOCTYPE should be uppercase:
<!DOCTYPE html>
See The XML serialization of HTML5, aka ‘XHTML5’:
Note that if you don’t uppercase DOCTYPE in an XHTML document, the XML parser will return a synt...
How to detect the OS from a Bash script?
...se them between all the computers I use. The problem is I have some OS specific aliases so I was looking for a way to determine if the script is running on Mac OS X, Linux or Cygwin .
...
Is it necessary to write HEAD, BODY and HTML tags?
...estrictions are largely technical and won't ordinarily affect you. So yes, if it matters to your page whether a comment node or white space appears just before the head element or just inside it, (the page's JS could depend on it) then you must explicitly identify the head start tag to make that rel...
Sometimes adding a WCF Service Reference generates an empty reference.cs
... the time it's because I've got a type name conflict it couldn't resolve.
If you right-click on your service reference and click configure and uncheck "Reuse Types in Referenced Assemblies" it'll likely resolve the issue.
If you were using some aspect of this feature, you might need to make sure y...