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java get file size efficiently
...e.length() is caching something but simply because the other 2 options are based on the same method but do extra work that slows them down.
– x4u
Jun 2 '11 at 1:32
2
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What's the difference between using “let” and “var”?
...tatement.
If you're writing client-side JavaScript code and use a browser based transpiler (like Traceur or babel-standalone), you can safely use the let statement, however your code is likely to be anything but optimal with respect to performance.
If you're writing client-side JavaScript code and...
How do I mock a service that returns promise in AngularJS Jasmine unit test?
...rite multiple tests for a single function, therefore I would have a common base set up that would be called before each test. Also you may want to look up the understood meaning of anti pattern as it associates to software engineering.
– Darren Corbett
Jun 4 '...
Vertically aligning CSS :before and :after content [duplicate]
...
both of them work for me on Chrome Version 52.0.2743.116 (64-bit) (Linux)
– fassl
Aug 24 '16 at 11:34
2
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JavaScript Form Submit - Confirm or Cancel Submission Dialog Box
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Samuel Liew♦Samuel Liew
64.4k4040 gold badges132132 silver badges216216 bronze badges
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What's the (hidden) cost of Scala's lazy val?
..."current" version.
The proposed implementation looks like:
class LazyCellBase { // in a Java file - we need a public bitmap_0
public static AtomicIntegerFieldUpdater<LazyCellBase> arfu_0 =
AtomicIntegerFieldUpdater.newUpdater(LazyCellBase.class, "bitmap_0");
public volatile int bitma...
Adding placeholder text to textbox
...solution.
<Style x:Key="placeHolder" TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Type TextBox}}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TextBox}">
<Grid>...
Use email address as primary key?
.... However, this does not matter if you simply retrieve a user from the database using the e-mail address. It does matter if you have complex queries with multiple joins.
If you store information about users in multiple tables, the foreign keys to the users table will be the e-mail address. That mea...
How do I change the font size of a UILabel in Swift?
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YannStephYannSteph
9,04033 gold badges4646 silver badges4242 bronze badges
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How can I use pickle to save a dict?
...", line 70, in _reduce_ex
raise TypeError, "can't pickle %s objects" % base.__name__
TypeError: can't pickle module objects
>>>
Even a really simple dict will often fail. It just depends on the contents.
>>> d = {'x': lambda x:x}
>>> pik = pickle.dumps(d)
Tracebac...