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- Dictionarycheck/tʃɛk/
verb
- 1. examine (something) in order to determine its accuracy, quality, or condition, or to detect the presence of something: "customs officers have the right to check all luggage" Similar
- 2. stop or slow the progress of (something, typically something undesirable): "efforts were made to check the disease" Similar
noun
- 1. an examination to test or ascertain accuracy, quality, or satisfactory condition: "a campaign calling for regular checks on gas appliances" Similar
- 2. a stopping or slowing of progress: "there was no check to the expansion of the market"
exclamation
- 1. expressing assent or agreement. informal North American
- 2. used by a chess player to announce that the opponent's king has been placed in check.
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Sep 27, 2008 · 2. Use #define OSsymbol and #ifdef OSsymbol where OSsymbol is a #define 'able symbol identifying your target OS. Typically you would include a central header file defining the selected OS symbol and use OS-specific include and library directories to compile and build.
Dec 29, 2011 · I am writing a cross platform program. I want this one program to run under both Windows and Linux, so I have two different code segments for the two platforms. If the OS is Windows, I want the first
Feb 24, 2010 · MSVC also doesn't set this macro correctly, to this very day. By default it's defined to 199711L regardless of the language version, and you either need to add /Zc:__cplusplus to compiler flags, or check a MSVC-specific macro _MSVC_LANG instead, which always has the right value.
I want to make sure that the project fails to compile if user forgot to define this string. While i'd check this in a previous build-step, you can do this at compile-time. Using Boost for brevity: #define A "a" #define B BOOST_STATIC_ASSERT(sizeof(BOOST_STRINGIZE(A)) > 1); // succeeds BOOST_STATIC_ASSERT(sizeof(BOOST_STRINGIZE(B)) > 1); // fails
Aug 30, 2010 · To test if a variable var is set: [ ${var+x} ]. To test if a variable is set by name: [ ${!name+x} ]. To test if a positional parameter is set: [ ${N+x} ], where N is actually an integer. This answer is almost similar to Lionel’s but explore a more minimalist take by omitting the -z. To test if a named variable is set:
To check if a variable is undefined you will have to check if the variable is in the list of defined variables, using get_defined_vars(). There is no equivalent to JavaScript's undefined (which is what was shown in the question, no jQuery being used there). In the following example it will work the same way as JavaScript's undefined check.
May 9, 2009 · exists("variable_name") Will return True or False. To check if a variable exists in the local scope in Python, you can use the locals() function, which returns a dictionary containing all local variables. You can modify your exists function to check both global and local scopes like this: def exists(var):
Feb 7, 2009 · Let us say we want to know if 'temp' has Nth bit set or not. The following boolean expression will give true if bit is set, 0 otherwise. ( temp MODULUS 2^N+1 >= 2^N ) Consider the following example: int temp = 0x5E; // in binary 0b1011110 // BIT 0 is LSB. If I want to know if 3rd bit is set or not, I get.
Jun 18, 2013 · Yes you can check both: ... In this example even when #define DEBUG 0 but it is not equal to 1 ...
Dec 5, 2013 · 2. I am writing a C++ MFC-based application. Occasionally I will add #if defined (_DEBUG) statements in order to help me during the development process. My manager has demanded that I remove all such statements as he doesn't want two versions of the code. My feeling is that without the ability to use #if defined (_DEBUG), bugs are more likely ...
