Precondition

In computer programming, a precondition is a condition or predicate that must always be true just prior to the execution of some section of code or before an operation in a formal specification.

If a precondition is violated, the effect of the section of code becomes undefined and thus may or may not carry out its intended work. Security problems can arise due to incorrect preconditions.

Often, preconditions are simply included in the documentation of the affected section of code. Preconditions are sometimes tested using assertions within the code itself, and some languages have specific syntactic constructions for doing so.

For example: the factorial is only defined for integers greater than or equal to zero. So a program that calculates the factorial of an input number would have preconditions that the number be an integer and that it be greater than or equal to zero.

In object-oriented programming

Preconditions in object-oriented software development are an essential part of design by contract. Design by contract also includes notions of postcondition and class invariant.

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Precondition

Latest News for: Precondition

Trump explains to Mueller that there are preconditions

The Washington Post 14 Aug 2018

Or is it preexisting conditions? ... ....

Edit

'Trump's Offer to Iran to Start Talks Without Preconditions is a Trap' - Journo

Sputnik 08 Aug 2018

Donald Trump said that anyone doing business with Iran will not be doing business with the US. Via Twitter, he said that sanctions imposed on Tehran were "the most biting," adding that he's asking for world peace. In response, Iran's President Hassan Rouhani accused the US of using "psychological warfare," aiming to "sow division among Iranians ." ... ....

Edit

Rouhani to Trump: I have no precondition for talks, except U.S. compensate the past

Tehran Times 06 Aug 2018

TEHRAN - Iranian President Hassan Rouhani says he has no precondition for talks with the U.S., except that Washington “compensate” the past damage that it has done to Iran ... ....

Edit

Fox Now Loves 'Meeting With Iran With No Preconditions'

Democratic Underground 01 Aug 2018

On this morning's Fox and Friends, the Crotch Couch lauded Donald Trump for this unplanned announcement that he would meet with the Iranians without preconditions ... ....

Edit

Iran presidential aide elaborates on Trump's 'no preconditions'

Irna 01 Aug 2018

Tehran, Aug 1, IRNA - Head of the Center for Strategic Studies of President Office Hesameddin Ashena in a Twitter message on Wednesday elaborated on president Trump's no preconditions claims ... ....

Edit

Politicians in Tehran Sceptical of U.S. President’s Offer To Meet Iranian Counterpart ‘Without Preconditions’

Yahoo Daily News 01 Aug 2018

U.S. President Donald Trump's surprising statement on July 31 that he is willing to meet Iran's leadership without "preconditions" is being seen with deep skepticism in Tehran. Iranian foreign ministry said on Tuesday that Trump's offer contradicts his actions, pointing to U.S. moves to impose sanctions on Iran and put pressure on other countries to avoid conducting business with it ... He tweeted, “Iran & US had 2 yrs of talks ... ....

Edit

President Trump: 'I would certainly meet' with Iranian President Rouhani with 'no preconditions'

News & Record 31 Jul 2018

... 'no preconditions' ....

Edit

Trump says he's willing to meet Iran's president without precondition

The Providence Journal 31 Jul 2018

President Trump declared Monday that he would meet Iran's leaders "anytime they want," an invitation for face-to-face dialogue with a country he had appeared to threaten with war only days before and an affirmation of Trump's faith in his brand of personal diplomacy.Trump said he would meet Iranian President Hassan Rouhani without preconditions, ......

Edit

Trump says he’d meet with Iran without preconditions

MSNBC 31 Jul 2018

President Trump was asked about sitting down with the president of Iran to talk about easing tensions. Read more ... ....

Edit

Trump says he is willing to talk to Iran's leader without preconditions

Manila Bulletin 31 Jul 2018

By Reuters WASHINGTON - U.S. President Donald Trump said on Monday he would be willing to meet Iran’s leader without preconditions to discuss how to improve ties after he pulled... ....

Edit

Trump willing to talk to Iranian leader without preconditions

Canberra Times 31 Jul 2018

US President Donald Trump said on Monday he would be willing to meet Iran's leader without preconditions ... ....

Edit

Donald Trump says he is willing to meet with Iran without preconditions

Deutsche Welle 31 Jul 2018

The US president's overture to talk with Iran's President Hassan Rouhani was met by calls from Iran for the US to return to the 2015 nuclear deal. It follows escalating rhetoric and threats of war between the countries ... ....

Edit

As tension mounts, Trump says he is ready to meet Iranian President Rouhani 'without any precondition'

India TV 31 Jul 2018

US President Donald Trump on Tuesday said that he is ready to meet Iranian President Hassan Rouhani without any precondition at any time ... he would meet without any precondition....

Edit