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How to get the path of the batch script in Windows?
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%~dp0 will be the directory. Here's some documentation on all of the path modifiers. Fun stuff :-)
To remove the final backslash, you can use the :n,m substring syntax, like so:
SET mypath=%~dp0
echo %mypath:~0,-1%
I don't believe there's a way to combine the %0 syntax with the ...
Does delete on a pointer to a subclass call the base class destructor?
I have an class A which uses a heap memory allocation for one of its fields. Class A is instantiated and stored as a pointer field in another class ( class B .
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Rails 3: Get Random Record
...; rand(Thing.count))
# Rails 3
Thing.offset(rand(Thing.count)).first
Actually, in Rails 3 all examples will work. But using order RANDOM is quite slow for big tables but more sql-style
UPD. You can use the following trick on an indexed column (PostgreSQL syntax):
select *
from my_table
where i...
How to remove “disabled” attribute using jQuery?
...this (from this question):
$(".inputDisabled").prop('disabled', function (_, val) { return ! val; });
Here is a working fiddle.
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How can I log the stdout of a process started by start-stop-daemon?
...ON_ARGS > /var/log/some.log 2>&1"
Using exec to run the daemon allows stop to correctly stop the child process instead of just the bash parent.
Using --startas instead of --exec ensures that the process will be correctly detected by its pid and won't erroneously start multiple instances...
How to resume Fragment from BackStack if exists
... means there is an instance of the Fragment in the back stack. If not, actually execute the Fragment replacement logic.
private void replaceFragment (Fragment fragment){
String backStateName = fragment.getClass().getName();
FragmentManager manager = getSupportFragmentManager();
boolean fragm...
How to tell when UITableView has completed ReloadData?
...other way is to schedule your after-layout code to run later using dispatch_async:
[self.tableView reloadData];
dispatch_async(dispatch_get_main_queue(), ^{
NSIndexPath* indexPath = [NSIndexPath indexPathForRow: ([self.tableView numberOfRowsInSection:([self.tableView numberOfSections]-1)]-1) ...
Unpacking array into separate variables in JavaScript
...nd I've done it before. I just can't remember how, or what exactly it was called.
7 Answers
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How is an HTTP POST request made in node.js?
...PostCode(codestring) {
// Build the post string from an object
var post_data = querystring.stringify({
'compilation_level' : 'ADVANCED_OPTIMIZATIONS',
'output_format': 'json',
'output_info': 'compiled_code',
'warning_level' : 'QUIET',
'js_code' : codestring
})...
What are the main uses of yield(), and how does it differ from join() and interrupt()?
...m a little bit confused about the use of yield() method in Java, specifically in the example code below. I've also read that yield() is 'used to prevent execution of a thread'.
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