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How to sort a collection by date in MongoDB?
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db.getCollection('').find({}).sort({_id:-1})
This will sort your collection in descending order based on the date of insertion
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What are .a and .so files?
...ories... /usr/lib and /lib have most of them, and there is also the LIBRARY_PATH environment variable.
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Cannot highlight all occurrences of a selected word in Eclipse
... answered Jan 9 '17 at 6:32
tk_tk_
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How to fix “Headers already sent” error in PHP
...ipt:line)
Some functions modifying the HTTP header are:
header / header_remove
session_start / session_regenerate_id
setcookie / setrawcookie
Output can be:
Unintentional:
Whitespace before <?php or after ?>
The UTF-8 Byte Order Mark specifically
Previous error messages or notices
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Setting UIButton image results in blue button in iOS 7
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In iOS7 there is new button type called UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), // standard system button
Check your .xib file and change button type to Custom
To do this programmatically, add this line to the viewDidLoad:
[UIButton buttonWithType:UIButtonTypeSystem];
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How to calculate dp from pixels in android programmatically [duplicate]
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float ht_px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, ht, getResources().getDisplayMetrics());
float wt_px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, wt, getResources().getDisplayMetrics());
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How to loop through an associative array and get the key? [duplicate]
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If you use array_keys(), PHP will give you an array filled with just the keys:
$keys = array_keys($arr);
foreach($keys as $key) {
echo($key);
}
Alternatively, you can do this:
foreach($arr as $key => $value) {
echo($key);
}
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Prevent the keyboard from displaying on activity start
...wing may work
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
I've used it for this sort of thing before.
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NoSql Crash Course/Tutorial [closed]
...oc.objType == "users") {
if (doc.age > 10) {
emit(doc._id, null)
}
}
}
That's all there really is to it.....it gets way more complex from there on the server end, as the server has to handle crashes, and multiple revisions of the same object, but this is just an exa...
Execute bash script from URL
... aware that you can't pass command line arguments to your script. bash will_not_work foobar <(curl -s http://example.com/myscript.sh) If you own the script you can use environment variables instead like so: MYFLAG1=will_work bash MYFLAG2=foobar <(curl -s http://example.com/myscript.sh) and it ...