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Difference between IsNullOrEmpty and IsNullOrWhiteSpace in C# [duplicate]

... 190 Source: MSDN IsNullOrWhiteSpace is a convenience method that is similar to the following...
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How do I delete rows in a data frame?

... A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1 170k2424 gold badges348348 silver badges432432 bronze badges ...
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How to fix error “Updating Maven Project”. Unsupported IClasspathEntry kind=4?

... This issue has been fixed in m2e 1.5.0 which is available for Eclipse Kepler (4.3) and Luna (4.4) Please see https://bugs.eclipse.org/bugs/show_bug.cgi?id=374332#c14 The problem is caused by the fact that STS (the Spring IDE/Eclipse), as well Eclipse and other...
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How do I list the symbols in a .so file

... -TC libz.so libz.so: file format elf64-x86-64 DYNAMIC SYMBOL TABLE: 0000000000002010 l d .init 0000000000000000 .init 0000000000000000 DF *UND* 0000000000000000 GLIBC_2.2.5 free 0000000000000000 DF *UND* 0000000000000000 GLIBC_2.2.5 __errno_location 00000000000...
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How to drop a database with Mongoose?

... | edited Jan 20 '14 at 15:14 Der Hochstapler 18.4k1515 gold badges8282 silver badges124124 bronze badges ...
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Where does Visual Studio look for C++ header files?

...cts and Solutions → VC++ Directories. In new versions of Visual Studio (2015+) the above option is deprecated and a list of default include directories is available at Project Properties → Configuration → VC++ Directories In your case, add the directory that the header is to the project prop...
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How to make Twitter bootstrap modal full screen

...d this in Bootstrap 3 with the following code: .modal-dialog { width: 100%; height: 100%; margin: 0; padding: 0; } .modal-content { height: auto; min-height: 100%; border-radius: 0; } In general, when you have questions about spacing / padding issues, try right+clicking (or cmd+cl...
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While loop to test if a file exists in bash

...xists by adding: while [ ! -f /tmp/list.txt ] do sleep 2 # or less like 0.2 done ls -l /tmp/list.txt You might also make sure that you're using a Bash (or related) shell by typing 'echo $SHELL'. I think that CSH and TCSH use a slightly different semantic for this loop. ...
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What does ~> mean in a gem file [duplicate]

...d, but it limits versions to a subset of the possible versions. So ~> 2.0.0 means ">= 2.0.0 and < 2.1.0" in version numbers. 1.2.3 seems to be the latest version of Formtasic, that's why you're getting this error message. ...
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Capture Image from Camera and Display in Activity

...eView imageView; private static final int MY_CAMERA_PERMISSION_CODE = 100; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); this.imageView = (ImageView)this.findViewById(R.id.imageV...