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What generates the “text file busy” message in Unix?
...table while it was running.
For example, I was building a make workalike called rmk, and after a while it was self-maintaining. I would run the development version and have it build a new version. To get it to work, it was necessary to use the workaround:
gcc -g -Wall -o rmk1 main.o -L. -lrmk -L...
Declaring abstract method in TypeScript
...because it is abstract. This is part of TypeScript 1.6, which is now officially live.
abstract class Animal {
constructor(protected name: string) { }
abstract makeSound(input : string) : string;
move(meters) {
alert(this.name + " moved " + meters + "m.");
}
}
class Snake ...
What are best practices for multi-language database design? [closed]
...e language.
In some cases we add a DefaultLanguage field, so that we can fall-back to that language if no localized data is available for a specified language.
Example:
Table "Product":
----------------
ID : int
<any other language-neutral fields>
Table "ProductTranslation...
Split string on the first white space occurrence
...tr.indexOf(' ')+1); // "tocirah sneab"
Note that if there is no space at all, then the first line will return an empty string and the second line will return the entire string. Be sure that is the behavior that you want in that situation (or that that situation will not arise).
...
Regex, every non-alphanumeric character except white space or colon
...
[^a-zA-Z\d\s:]
\d - numeric class
\s - whitespace
a-zA-Z - matches all the letters
^ - negates them all - so you get - non numeric chars, non spaces and non colons
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How can I use an array of function pointers?
...l; /* address of mul() */
p[3] = div; /* address of div() */
[...]
To call one of those function pointers:
result = (*p[op]) (i, j); // op being the index of one of the four functions
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Min/Max-value validators in asp.net mvc
...MaxValueAttribute : ValidationAttribute
{
private readonly int _maxValue;
public MaxValueAttribute(int maxValue)
{
_maxValue = maxValue;
}
public override bool IsValid(object value)
{
return (int) value <= _maxValue;
...
How to update a menu item shown in the ActionBar?
...e-writing the desire text worked without problems:
if (mnuTopMenuActionBar_ != null) {
MenuItem mnuPageIndex = mnuTopMenuActionBar_
.findItem(R.id.menu_magazin_pageOfPage_text);
if (mnuPageIndex != null) {
if (getScreenOrientation() == 1) {
mnuPageIndex.setTitle...
In Python script, how do I set PYTHONPATH?
... that if you want to make sure that Python checks the new directory before all of the others when importing, you should put the new directory first in the list, as in sys.path.insert(0, '/path/to/whatever').
– wecsam
Jun 15 '17 at 16:22
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Port 80 is being used by SYSTEM (PID 4), what is that?
...P adress is 0.0.0.0, state = LISTENING: means that port 80 is listening to all interfaces (not used)
How to read NETSTAT -AN results:
https://sites.google.com/site/xiangyangsite/home/technical-tips/linux-unix/networks-related-commands-on-linux/how-to-read-netstat--an-results
...