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How is a CRC32 checksum calculated?
... For CRC32 or CRC32b , do we get hash collision meaning for two different strings do we get same CRC
– indianwebdevil
May 18 at 2:42
1
...
Remove blank attributes from an Object in Javascript
... loop through the object:
var test = {
test1 : null,
test2 : 'somestring',
test3 : 3,
}
function clean(obj) {
for (var propName in obj) {
if (obj[propName] === null || obj[propName] === undefined) {
delete obj[propName];
}
}
}
clean(test);
If you're concerned abou...
How can I upload files asynchronously?
...'), // The file inputs containing the files to send.
data: { msg: 'Some extra data you might need.'}
}).done(function(){
console.log("Success: Files sent!");
}).fail(function(){
console.log("An error occurred, the files couldn't be sent!");
});
Plugins
Bifröst is just a small wrapper that...
Are HLists nothing more than a convoluted way of writing tuples?
...(t2)
val t2b = f2.tupled
// Inferred type of t2b is (Int, Boolean, Double, String, String, Int, Boolean)
Without using HLists (or something equivalent) to abstract over the arity of the tuple arguments to flatten it would be impossible to have a single implementation which could accept arguments o...
Rails: Using greater than/less than with a where statement
...xibility with your ARel queries if you're able to use the hash syntax over strings which is why many would prefer this solution. Depending on your project/team/organization you may want something that is easier for someone glancing at the code to figure out, which the accepted answer is.
...
Direct vs. Delegated - jQuery .on()
... multiple different events (you can put multiple event names in that first string.) .click() is just a shorthand for that first form.
– N3dst4
Aug 1 '13 at 7:45
1
...
How to resolve “must be an instance of string, string given” prior to PHP 7?
...s. Scalar types are not type-hintable. In this case an object of the class string is expected, but you're giving it a (scalar) string. The error message may be funny, but it's not supposed to work to begin with. Given the dynamic typing system, this actually makes some sort of perverted sense.
You ...
Bash script to receive and repass quoted parameters
...# $4= "ddd ddd"
"$*" - quoted-dollar-star smashes the args into a single string (~1% of the time you actually want this behavior, eg in a conditional: if [[ -z "$*" ]]; then ...):
./quoted-dollar-star.sh aaa '' "'cc cc'" '"ddd ddd"'
# $1= aaa 'cc cc' "ddd ddd"
# $2=
...
throw Error('msg') vs throw new Error('msg')
...!(this instanceof Array)) { return new Array(arguments); }. (But note that String(x) and new String(x) are very different, and likewise for Number and Boolean.)
That said, in case of an error, it's not even required to throw an Error object... throw 'Bad things happened'; will work, tooYou can even...
Get filename and path from URI from mediastore
...
Below API 19 use this code to get File Path from URI:
public String getRealPathFromURI(Context context, Uri contentUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = context.getContentResolver().query(contentUri, proj, null, null...