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node.js execute system command synchronously
...sion 0.12 - so for a while) supports execSync:
child_process.execSync(command[, options])
You can now directly do this:
const execSync = require('child_process').execSync;
code = execSync('node -v');
and it'll do what you expect. (Defaults to pipe the i/o results to the parent process). Note t...
Difference between == and === in JavaScript [duplicate]
...are strict comparison operators:
JavaScript has both strict and
type-converting equality comparison.
For strict equality the objects being
compared must have the same type and:
Two strings are strictly equal when they have the same sequence of
characters, same length, and same
...
Should I use string.isEmpty() or “”.equals(string)?
...equals(s) is you don't need the null check (equals will check its argument and return false if it's null), which you seem to not care about. If you're not worried about s being null (or are otherwise checking for it), I would definitely use s.isEmpty(); it shows exactly what you're checking, you ca...
Precision String Format Specifier In Swift
... This is unnecessarily complicated. realityone's answer works and is much more concise.
– Steven Marlowe
Dec 20 '14 at 5:41
9
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Memory address of variables in Java
...
That is the class name and System.identityHashCode() separated by the '@' character. What the identity hash code represents is implementation-specific. It often is the initial memory address of the object, but the object can be moved in memory by t...
Why do we need the “event” keyword while defining events?
I don't understand why do we need the "event" keyword while defining events, when we can do the same thing without using "event" keyword, just by using the delegates.
...
Read error response body in Java
...etInputStream() will throw an IO Exception. You should catch the exception and read from error stream using getErrorStream(). This seems to be a better approach than checking on httpresponse code.
– Sudarshan Bhat
Aug 20 '12 at 12:04
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Performing Inserts and Updates with Dapper
...terested in using Dapper - but from what I can tell it only supports Query and Execute. I do not see that Dapper includes a way of Inserting and Updating objects.
...
initialize a numpy array
Is there way to initialize a numpy array of a shape and add to it? I will explain what I need with a list example. If I want to create a list of objects generated in a loop, I can do:
...
How to detect incoming calls, in an Android device?
...
Here's what I use to do this:
Manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<!--This part is inside the application-->
<receiver android:name=".Call...