brace | browserify compatible version of the ace editor | Game Engine library
kandi X-RAY | brace Summary
kandi X-RAY | brace Summary
browserify compatible version of the ace editor.
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Top functions reviewed by kandi - BETA
- Initialize a new Folding with the given line and column range .
- Parses an NCName name .
- Parse a function name .
- Drag handler .
- The CoffeeTextRules object
- Creates a new BracketMatch object
- Handler for the mouseup event .
- Creates setting of the setting
- Handler for a Gutter .
- Parse JSXML .
brace Key Features
brace Examples and Code Snippets
Lines of Code : 12
License : No License
Copyfoo/1/bar
foo/2/bar
foo/3/bar
baz/1/qux
baz/2/qux
baz/3/qux
foo/1/bar
foo/2/bar
foo/3/bar
baz/1/qux
baz/2/qux
baz/3/qux
{a,b,c} => a b c
{a,b,c}{1,2} => a1 a2 b1 b2 c1 c2
{1..9} => 1 2 3 4 5 6 7 8 9
{4..-4} => 4 3 2 1 0 -1 -2 -3 -4
{1..20..3} => 1 4 7 10 13 16 19
{a..j} => a b c d e f g h i j
{j..a} => j i h console.log(braces('a/{x,y,z}/b'));
//=> ['a/(x|y|z)/b']
console.log(braces(['a/{01..20}/b', 'a/{1..5}/b']));
//=> [ 'a/(0[1-9]|1[0-9]|20)/b', 'a/([1-5])/b' ]
console.log(braces('a/{x,y,z}/b', { expand: true }));
//=> ['a/x/b', 'a/y/b', public Map createUsingDoubleBrace() {
Map doubleBraceMap = new HashMap() {
/**
*
*/
private static final long serialVersionUID = 1L;
{
put("key1", "value1");
Community Discussions
Trending Discussions on brace
QUESTION
Given the following identity functions:
...ANSWER
Answered 2022-Feb-26 at 13:48x -> _void() and x -> one() are expected to be compatible with Consumer (with the result of one() to be discarded).
When the lambda body is of a block type, the compiler additionally checks the "return" compatibility. The JLS is rather explicit about void/value compatibility for block bodies:
A block lambda body is void-compatible if every return statement in the block has the form return;. A block lambda body is value-compatible if it cannot complete normally (§14.21) and every return statement in the block has the form return Expression;.
While that doesn't say why the single-expression bodies fail, it says exactly why block bodies compile: the compiler looks at the return forms to judge on those bodies' compatibility with Consumer or Function (in this case).
For the method invocation expressions, the fact that this is allowed:
QUESTION
In following program, struct C has two constructors : one from std::initializer_list and the other from std::initializer_list. Then an object of the struct is created with C{{1}}:
ANSWER
Answered 2022-Feb-12 at 23:30The wording could be clearer (which is unsurprising), but GCC and MSVC are correct here: the relevant rule ([over.ics.list]/7) checks only that
overload resolution […] chooses a single best constructor […] to perform the initialization of an object of type
Xfrom the argument initializer list
so the fact that the initialization of B from {1} would be ill-formed is irrelevant.
There are several such places where implicit conversion sequences are more liberal than actual initialization, causing certain cases to be ambiguous even though some of the possibilities wouldn’t actually work. If the programmer was confused and thought one of those near misses was actually a better match, it’s a feature that the ambiguity is reported.
QUESTION
I added an inline style element to a div tag in a react component along with a className element. The className property renders but the style is not displaying. I am setting from an object variable. However, if I set the style element directly using double curly braces it works, just not working from a variable.
Here is an image of the object value I am using to set the style element.
This shows where the style element should be getting set as the component is rendering, the styleElement object has a value set at this point
This shows the component post rendering and the style element is not present
What would prevent the style element from rendering even though is it populated from an object containing CSS properties?
...ANSWER
Answered 2022-Jan-21 at 17:55use ES6 for this.
QUESTION
So basically, I want to create a function like this:
...ANSWER
Answered 2021-Nov-18 at 03:39In C++11 and newer you can use template parameter packs to create a recursive implementation, like this:
QUESTION
From various sources, I have come to the understanding that there are four main techniques of string formatting/interpolation in Python 3 (3.6+ for f-strings):
- Formatting with
%, which is similar to C'sprintf - The
str.format()method - Formatted string literals/f-strings
- Template strings from the standard library
stringmodule
My knowledge of usage mainly comes from Python String Formatting Best Practices (source A):
str.format()was created as a better alternative to the%-style, so the latter is now obsolete- However,
str.format()is vulnerable to attacks if user-given format strings are not properly handled
- However,
- f-strings allow
str.format()-like behavior only for string literals but are shorter to write and are actually somewhat-optimized syntactic sugar for concatenation - Template strings are safer than
str.format()(demonstrated in the first source) and the other two methods (implied in the first source) when dealing with user input
I understand that the aforementioned vulnerability in str.format() comes from the method being usable on any normal strings where the delimiting braces are part of the string data itself. Malicious user input containing brace-delimited replacement fields can be supplied to the method to access environment attributes. I believe this is unlike the other ways of formatting where the programmer is the only one that can supply variables to the pre-formatted string. For example, f-strings have similar syntax to str.format() but, because f-strings are literals and the inserted values are evaluated separately through concatenation-like behavior, they are not vulnerable to the same attack (source B). Both %-formatting and Template strings also seem to only be supplied variables for substitution by the programmer; the main difference pointed out is Template's more limited functionality.
I have seen a lot of emphasis on the vulnerability of str.format() which leaves me with questions of what I should be wary of when using the other techniques. Source A describes Template strings as the safest of the above methods "due to their reduced complexity":
The more complex formatting mini-languages of the other string formatting techniques might introduce security vulnerabilities to your programs.
- Yes, it seems like f-strings are not vulnerable in the same way
str.format()is, but are there known concerns about f-string security as is implied by source A? Is the concern more like risk mitigation for unknown exploits and unintended interactions?
I am not familiar with C and I don't plan on using the clunkier %/printf-style formatting, but I have heard that C's printf had its own potential vulnerabilities. In addition, both sources A and B seem to imply a lack of security with this method. The top answer in Source B says,
String formatting may be dangerous when a format string depends on untrusted data. So, when using str.format() or %-formatting, it's important to use static format strings, or to sanitize untrusted parts before applying the formatter function.
- Do
%-style strings have known security concerns? - Lastly, which methods should be used and how can user input-based attacks be prevented (e.g. filtering input with regex)?
- More specifically, are Template strings really the safer option? and Can f-strings be used just as easily and safely while granting more functionality?
ANSWER
Answered 2022-Jan-18 at 12:53It doesn't matter which format you choose, any format and library can have its own downsides and vulnerabilities. The bigger questions you need to ask yourself is what is the risk factor and the scenario you are facing with, and what are you going to do about it. First ask yourself: will there be a scenario where a user or an external entity of some kind (for example - an external system) sends you a format string? If the answer is no, there is no risk. If the answer is yes, you need to see whether this is needed or not. If not - remove it to eliminate the risk. If you need it - you can perform whitelist-based input validation and exclude all format-specific special characters from the list of permitted characters, in order to eliminate the risk. For example, no format string can pass the ^[a-zA-Z0-9\s]*$ generic regular expression.
So the bottom line is: it doesn't matter which format string type you use, what's really important is what do you do with it and how can you reduce and eliminate the risk of it being tampered.
QUESTION
Given the following code:
...ANSWER
Answered 2022-Jan-16 at 05:05There's a special case that precludes D{{}}. It's a very particular set of conditions, so I imagine it's there specifically to prevent this exact recursion.
[over.best.ics]/4 However, if the target is
(4.1) — the first parameter of a constructor
...
and the constructor ... is a candidate by
...
(4.5) — the second phase of [over.match.list] when the initializer list has exactly one element that is itself an initializer list, and the target is the first parameter of a constructor of classX, and the conversion is toXor reference to cvX,
user-defined conversion sequences are not considered.
D{{}} is a list-initialization. D(D&&) constructor is considered by the second phase of it (the first phase looks at initializer-list constructors, like C(std::initializer_list) in your second example). But for it to be viable, there needs to be an implicit conversion from {} to D&&, and [over.best.ics]/4 suppresses it.
QUESTION
In the following code there is an initialization of A objects with template argument deduction using two forms distinct by the type of braces:
ANSWER
Answered 2021-Nov-15 at 13:22These lines being well-formed relies on an aggregate deduction candidate, which provides a way for T to be deduced from aggregate intialization lists. This feature is indifferent to the syntax, so failing on either one but not the other is already inconsistent.
In MSVC's case, it's the combination of class template parameter deduction and parenthesized aggregate intialization that is causing the issue (the latter works fine in isolation). MSVC also fails to compile A a(1);, which is more obviously well-formed.
QUESTION
In the following code there is an initialization of A objects with template argument deduction using designated initializers in two slightly distinct forms:
ANSWER
Answered 2021-Nov-13 at 16:52GCC is correct. Braced-init-list like {1} has no type, so it makes template argument deduction fail.
Non-deduced contexts
...
The parameter P, whose A is
a braced-init-list, but P is not std::initializer_list, a reference to one (possibly cv-qualified), or (since C++17)a reference to an array:
QUESTION
I am having issues accessing the value of a 2-dimensional hash. From what I can tell online, it should be something like: %myHash{"key1"}{"key2"} #Returns value
However, I am getting the error: "Type Array does not support associative indexing."
Here's a Minimal Reproducible Example.
...ANSWER
Answered 2021-Oct-24 at 09:48After adding the second elements with push to the same part of the Hash, the elment is now an array. Best you can see this by print the Hash before the crash:
QUESTION
In C++17, consider a case where S is a struct with a deleted default constructor and a float member, when S is initialized with empty braces, is the float member guaranteed by the standard to be zero-initialized?
ANSWER
Answered 2021-Oct-18 at 20:55This is a quirk of C++ that is fixed in C++20. In the meantime you can add explicit to the deleted default constructor to force the struct to become non-aggregate, and make your code a guaranteed compile error:
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