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System.currentTimeMillis() vs. new Date() vs. Calendar.getInstance().getTime()
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System.currentTimeMillis itself is not affected by time zone. Changing system time will affect System.nanotime in the same way as System.currentTimeMillis
– Viktor
Jun 27 '17 at 16:00
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What does the “>” (greater-than sign) CSS selector mean?
...lished between both elements.
Not selected
This p.some_class is contained by a blockquote within the div, rather than the div itself. Although this p.some_class is a descendant of the div, it's not a child; it's a grandchild.
Consequently, while div > p.some_class won't match this element, div p...
How to use a WSDL file to create a WCF service (not make a call)
...everal service interfaces - and this is your server instance.
Now a class by itself doesn't really help yet - you'll need to host the service somewhere. You need to either create your own ServiceHost instance which hosts the service, configure endpoints and so forth - or you can host your service i...
Angular JS break ForEach
...he execution of the inner function is and how many executions can be saved by exiting the loop (break) early.
– hgoebl
Mar 12 '15 at 13:54
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How to vertically align a html radio button to it's label?
...o always try to overwrite settings which you didn't set, if it looks weird by default.
– StanE
Oct 9 '16 at 19:52
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Android Gradle plugin 0.7.0: “duplicate files during packaging of APK”
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Day by day I am astonished by how programmers could have been remotely productive before stackoverflow arrived. Thanks for the fix! I had to exclude META-INF/LICENSE and /NOTICE instead. (No txt, even on latest gradle.)
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Creating an empty Pandas DataFrame, then filling it?
...A','B', 'C']
Note: we could create an empty DataFrame (with NaNs) simply by writing:
df_ = pd.DataFrame(index=index, columns=columns)
df_ = df_.fillna(0) # with 0s rather than NaNs
To do these type of calculations for the data, use a numpy array:
data = np.array([np.arange(10)]*3).T
Hence we...
C++ performance challenge: integer to std::string conversion
...h as 300 clockticks when linking as a DLL.
For the same reason, returning by reference is better because it avoids an assignment, a constructor and a destructor.
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Is String.Contains() faster than String.IndexOf()?
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IndexOf(string) has no options and Contains()uses an Ordinal compare (a byte-by-byte comparison rather than trying to perform a smart compare, for example, e with é).
So IndexOf will be marginally faster (in theory) as IndexOf goes straight to a string search using FindNLSString from kernel32.d...
AngularJS ngClass conditional
...yes', 0:'test_no'}[status]"></div>
In which class will be apply by value of status
if status value is 1 or true then it will add class test_yes
if status value is 0 or false then it will add class test_no
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