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When to use StringBuilder in Java [duplicate]
... now. HOWEVER switching to explicit StringBuilder 1 instance gave me 0-1ms from ~120ms on 1000 iterations. So StringBuilder is still necessary for critical places in similar cases.
– serg.nechaev
Mar 3 '15 at 3:22
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Find the index of a dict within a list, by matching the dict's value
...e(lst) if d["name"] == "Tom"), None)
# 1
If you need to fetch repeatedly from name, you should index them by name (using a dictionary), this way get operations would be O(1) time. An idea:
def build_dict(seq, key):
return dict((d[key], dict(d, index=index)) for (index, d) in enumerate(seq))
...
PHP Constants Containing Arrays?
...have 5.6. Anyone on windows server just now got the 5.6 sql server drivers from microsoft about a month ago.
– M H
Jul 9 '15 at 5:28
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Change Image of ImageView programmatically in Android
...he View class, not to ImageView specifically. But since ImageView inherits from View you can use them, too. The methods with Image in their name belong specifically to ImageView.
The View methods all do the same thing as each other (though setBackgroundDrawable() is deprecated), so we will just focu...
How do I test for an empty JavaScript object?
...e lodash is empty (lodash.com/docs#isEmpty), but how is that any different from using a jQuery solution - you still need to install an additional library. I think a vanilla javascript solution is the intent.
– tfmontague
Jul 23 '14 at 23:38
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pod install -bash: pod: command not found
... a message that says
"Pod installation complete! There are X dependencies from the Podfile and X total pods installed."
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u'\ufeff' in Python string
... Had this same issue with the csv DictReader reading a csv file saved from Excel.
– LArntz
Oct 4 '19 at 14:01
1
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Find a private field with Reflection?
... string name) {
// Set the flags so that private and public fields from instances will be found
var bindingFlags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance;
var field = obj.GetType().GetField(name, bindingFlags);
return (T)field?.GetValue(o...
AngularJS passing data to $http.get request
...
Starting from AngularJS v1.4.8, you can use
get(url, config) as follows:
var data = {
user_id:user.id
};
var config = {
params: data,
headers : {'Accept' : 'application/json'}
};
$http.get(user.details_path, config).then(functi...
jQuery get input value after keypress
....value to access the current input value.
DEMO here
Info about .keypress from jQuery docs,
The keypress event is sent to an element when the browser registers
keyboard input. This is similar to the keydown event, except in the
case of key repeats. If the user presses and holds a key, a key...