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How can I check if a string is null or empty in PowerShell?

... null strings passed to a commandlet or function don't stay null. They get converted to empty strings. See the Microsoft Connect bug at connect.microsoft.com/PowerShell/feedback/details/861093/…. – JamieSee Dec 11 '14 at 17:59 ...
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Split string with delimiters in C

...fy the delimiter to use). Note that strtok() will modify the string passed into it. If the original string is required elsewhere make a copy of it and pass the copy to strtok(). EDIT: Example (note it does not handle consecutive delimiters, "JAN,,,FEB,MAR" for example): #include <stdio.h> #...
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static function in C

What is the point of making a function static in C? 7 Answers 7 ...
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scipy.misc module has no attribute imread?

...mageio.core.util.Array. If you want/need a numpy.ndarray and don't want to convert it, use matplotlib.pyplot.imread, as it also returns a numpy.ndarray. – Stefan Jan 20 '19 at 14:55 ...
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How can I shrink the drawable on a button?

... = getResources().getDrawable(R.drawable.s_vit); drawable.setBounds(0, 0, (int)(drawable.getIntrinsicWidth()*0.5), (int)(drawable.getIntrinsicHeight()*0.5)); ScaleDrawable sd = new ScaleDrawable(drawable, 0, scaleWidth, scaleHeight); Button btn = findViewbyId(R.id.yourbtnID...
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Error in Swift class: Property not initialized at super.init call

... 1 “A designated initializer must ensure that all of the “properties introduced by its class are initialized before it delegates up to a superclass initializer.” Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itunes.apple.com/us/book/swift-programming...
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Assign variable value inside if-statement [duplicate]

...iables can be assigned but not declared inside the conditional statement: int v; if((v = someMethod()) != 0) return true; share | improve this answer | follow ...
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Android Paint: .measureText() vs .getTextBounds()

I'm measuring text using Paint.getTextBounds() , since I'm interested in getting both the height and width of the text to be rendered. However, the actual text rendered is always a bit wider than the .width() of the Rect information filled by getTextBounds() . ...
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Catch Ctrl-C in C

...lipping a bool used in main(): #include <signal.h> static volatile int keepRunning = 1; void intHandler(int dummy) { keepRunning = 0; } // ... int main(void) { signal(SIGINT, intHandler); while (keepRunning) { // ... Edit in June 2017: To whom it may concern, particul...
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CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

... push esi 769AEFA3 push edi ; __int32 769AEFA4 push ebx ; unsigned __int32 769AEFA5 xor esi, esi 769AEFA7 inc esi 769AEFA8 push esi ; int 769AEFA9 ...