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Learning to write a compiler [closed]
...t isn't very useful for writing an interpreter.
– a_m0d
Sep 16 '10 at 6:58
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How do I test if a variable is a number in Bash?
... a") produces error, like bash: [[: 1 a: syntax error in expression (error token is "a")
If the value is the same as var-name (e.g. i="i"), produces error, like bash: [[: i: expression recursion level exceeded (error token is "i")
...
Long press gesture on UICollectionViewCell
...ILongPressGestureRecognizer *lpgr
= [[UILongPressGestureRecognizer alloc]
initWithTarget:self action:@selector(handleLongPress:)];
lpgr.delegate = self;
lpgr.delaysTouchesBegan = YES;
[self.collectionView addGestureRecognizer:lpgr];
}
-(void)handleLongPress:...
best way to add license section to iOS settings bundle
...sary newlines from the license text. Check it out: gist.github.com/Zyphrax/0d015c618d46093b4f815e62a6a33969
– Zyphrax
May 29 '17 at 23:22
1
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Parse large JSON file in Nodejs
...ine.length-1] == '\r') line=line.substr(0,line.length-1); // discard CR (0x0D)
if (line.length > 0) { // ignore empty lines
var obj = JSON.parse(line); // parse the JSON
console.log(obj); // do something with the data here!
}
}
Each time the file stream receives data fr...
How to create Android Facebook Key Hash?
...owed as the first element of a pipeline. At line:1 char:184 ... Unexpected token 'sha1' in expression or statement. ... Expressions are only allowed as the first element of a pipeline. ... Unexpected token 'base64' in expression or statement. + CategoryInfo : ParserError: (:) [], Parent...
How to name factory like methods?
...t word I can think of off the top of my head is 'Construct'. In the past, 'Alloc' (allocate) might have been used in similar situations, reflecting the greater emphasis on blocks of data than objects in languages like C.
'Create' is a short, simple word that has a clear intuitive meaning. In most ca...
How to print the values of slices
... // Turn the slice into a string that looks like ["one" "two" "three"]
tokens := strings.Split(semiformat, " ") // Split this string by spaces
fmt.Printf(strings.Join(tokens, ", ")) // Join the Slice together (that was split by spaces) with commas
}
Go Playground
...
How to make remote REST call inside Node.js? any CURL?
... : 'graph.facebook.com',
port : 443,
path : '/youscada/feed?access_token=your_api_key',
method : 'POST',
headers : postheaders
};
console.info('Options prepared:');
console.info(optionspost);
console.info('Do the POST call');
// do the POST call
var reqPost = https.request(optionsp...
Storing custom objects in an NSMutableArray in NSUserDefaults
...ray];
if (oldSavedArray != nil)
objectArray = [[NSMutableArray alloc] initWithArray:oldSavedArray];
else
objectArray = [[NSMutableArray alloc] init];
}
You should check that the data returned from the user defaults is not nil, because I believe unarchiving from nil causes a...