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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?

... @Svish yes, now I think of it again, it is a null object, so you're right, it won't work. It wouldn't in Java neither: null pointer exception. Never mind. Tnx for your reply! [edit: tested it in Java: NullPointerException. With the diffe...
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Dynamically updating plot in matplotlib

... Since there is no call to show(), the plot never appears on the screen. If I call show(), it blocks and doesn't perform the updates. Am I missing something? gist.github.com/daviddoria/027b5c158b6f200527a4 – David Doria Sep 18 '15 at 11:14 ...
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How do I use the includes method in lodash to check if an object is in the collection?

...=). Because the two object literals of {"b": 2} in your example represent different instances, they are not equal. Notice: ({"b": 2} === {"b": 2}) > false However, this will work because there is only one instance of {"b": 2}: var a = {"a": 1}, b = {"b": 2}; _.includes([a, b], b); > true ...
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Working Soap client example

...(); headers.addHeader("SOAPAction", "http://ws.cdyne.com/VerifyEmail");. I now think it's strange it worked before without it. :) – acdcjunior Apr 11 '13 at 14:01 ...
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Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./

...to represent a range of characters. This same character class can be simplified with ranges to this: /[$-/:-?{-~!"^_`\[\]]/ There are three ranges. '$' to '/', ':' to '?', and '{' to '~'. the last string of characters can't be represented more simply with a range: !"^_`[]. Use an ACSII tabl...
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Get Folder Size from Windows Command Line

...rse | Measure-Object -Sum Length or shorter: ls -r | measure -sum Length If you want it prettier: switch((ls -r|measure -sum Length).Sum) { {$_ -gt 1GB} { '{0:0.0} GiB' -f ($_/1GB) break } {$_ -gt 1MB} { '{0:0.0} MiB' -f ($_/1MB) break } {$_ -gt 1KB} { '{0:0.0} KiB' -...
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NPM doesn't install module dependencies

... @Flame2057 it's good to know you're out of luck, though not too informative. You may go ahead and formulate a question, hopefully the community has the knowledge to solve. Have fun! – allprog Jul 17 '17 at 14:17...
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Calculate distance between 2 GPS coordinates

... If anyone, specifically those of you who don't look for end of line comments, is staring at this formula and looking for a unit of distance, the unit is km. :) – Dylan Knowles Sep 27 '13...
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关于 __VA_ARGS__ 宽字符版本的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术

关于 __VA_ARGS__ 宽字符版本的问题在写一个可变参数的记录日志函数,考虑到宽字符(Unicode版本)时:#define WIDEN2(x) L ## x#define WIDEN(x) WIDEN2(x)#define __...在写一个可变参数的记录日志函数,考虑到宽字符(Unicode版本)时: #defin...
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Modify tick label text

...fault (and when the plot is draw the labels are simply the ticks values). Knowing that, to get your desired output would require something like this: >>> from pylab import * >>> axes = figure().add_subplot(111) >>> a=axes.get_xticks().tolist() >>> a[1]='change' &...