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PowerShell script not accepting $ (dollar) sign
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Escape it by using backtick (`) as an escape character for the dollar sign ($).
Also, try to enclose the statement in single-quotes instead of the double-quotes you are using now.
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Named placeholders in string formatting
In Python, when formatting string, I can fill placeholders by name rather than by position, like that:
19 Answers
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Grep characters before and after match?
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The awk version by @amit_g is much faster.
– ssobczak
Jul 4 '14 at 12:46
6
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Media Player called in state 0, error (-38,0)
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You need to call mediaPlayer.start() in the onPrepared method by using a listener.
You are getting this error because you are calling mediaPlayer.start() before it has reached the prepared state.
Here is how you can do it :
mp.setDataSource(url);
mp.setOnPreparedListener(this);
mp.pr...
Why does multiprocessing use only a single core after I import numpy?
...import. As far as I can tell, this problem seems to be specifically caused by them linking against multithreaded OpenBLAS libraries.
A workaround is to reset the task affinity using
os.system("taskset -p 0xff %d" % os.getpid())
With this line pasted in after the module imports, my example now ru...
Maven command to determine which settings.xml file Maven is using
...pository at C:\....\repository
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(Original directory names are removed by me)
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How to not wrap contents of a div?
...o expand across the whole container, you can float it left -- floated divs by default expand to support their contents, like so:
<form>
<div style="float: left; background-color: blue">
<input type="button" name="blah" value="lots and lots of characters"/>
<...
Comparing strings with == which are declared final in Java
... also becomes a compile-time constant expression, and its value is inlined by the compiler where it is used. So, in your second code example, after inlining the values, the string concatenation is translated by the compiler to:
String concat = "str" + "ing"; // which then becomes `String concat = ...
How do you implement a class in C? [closed]
... the "class" to a separate file? Assume that we can preallocate the memory by assuming a fixed number of instances, or even defining the reference to each object as a constant before compile time. Feel free to make assumptions about which OOP concept I will need to implement (it will vary) and sugge...
How can I view an old version of a file with Git?
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Doing this by date looks like this:
git show HEAD@{2013-02-25}:./fileInCurrentDirectory.txt
Note that HEAD@{2013-02-25} means "where HEAD was on 2013-02-25" in this repository (using the reflog), not "the last commit before 2013-02-2...