Feng Yuan’s Post

💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 🔥   💎𝐀𝐥𝐥() 𝐯𝐬 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() 𝐁𝐞𝐧𝐜𝐡𝐦𝐚𝐫𝐤 𝐓𝐞𝐬𝐭 𝐢𝐧 .𝐍𝐄𝐓 𝟖.𝟎 💡 You should prefer to use 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() instead of 𝐀𝐥𝐥() method with collections. ⚡ The 𝐀𝐥𝐥() method checks for all the elements in a collection and returns a boolean. It is used with lambda expressions or predicates. Even if one of the element do not satisfy the set condition, the All() method returns False, otherwise True. ⚡ The 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() method takes a predicate delegate as an argument and checks whether all elements in the collection satisfy the specified conditions and returns a boolean. Even if one of the element do not satisfy the set condition, the TrueForAll() method returns False, otherwise True. ✅ 𝐀𝐥𝐥() 𝐢𝐬 𝐦𝐨𝐫𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐥 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method. 🔥 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method can be more efficient than All(), especially for large collections such as 𝐋𝐢𝐬𝐭, 𝐀𝐫𝐫𝐚𝐲, 𝐈𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭 𝐚𝐧𝐝 𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭.𝐁𝐮𝐢𝐥𝐝𝐞𝐫 collection types. This is because TrueForAll() can use the underlying implementation of the collection to iterate over the elements in the most efficient way possible. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 🔥   💎𝐀𝐥𝐥() 𝐯𝐬 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() 𝐁𝐞𝐧𝐜𝐡𝐦𝐚𝐫𝐤 𝐓𝐞𝐬𝐭 𝐢𝐧 .𝐍𝐄𝐓 𝟖.𝟎 💡 You should prefer to use 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() instead of 𝐀𝐥𝐥() method with collections. ⚡ The 𝐀𝐥𝐥() method checks for all the elements in a collection and returns a boolean. It is used with lambda expressions or predicates. Even if one of the element do not satisfy the set condition, the All() method returns False, otherwise True. ⚡ The 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() method takes a predicate delegate as an argument and checks whether all elements in the collection satisfy the specified conditions and returns a boolean. Even if one of the element do not satisfy the set condition, the TrueForAll() method returns False, otherwise True. ✅ 𝐀𝐥𝐥() 𝐢𝐬 𝐦𝐨𝐫𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐥 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method. 🔥 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method can be more efficient than All(), especially for large collections such as 𝐋𝐢𝐬𝐭, 𝐀𝐫𝐫𝐚𝐲, 𝐈𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭 𝐚𝐧𝐝 𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭.𝐁𝐮𝐢𝐥𝐝𝐞𝐫 collection types. This is because TrueForAll() can use the underlying implementation of the collection to iterate over the elements in the most efficient way possible. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 🔥   💎𝐀𝐥𝐥() 𝐯𝐬 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() 𝐁𝐞𝐧𝐜𝐡𝐦𝐚𝐫𝐤 𝐓𝐞𝐬𝐭 𝐢𝐧 .𝐍𝐄𝐓 𝟖.𝟎 💡 You should prefer to use 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() instead of 𝐀𝐥𝐥() method with collections. ⚡ The 𝐀𝐥𝐥() method checks for all the elements in a collection and returns a boolean. It is used with lambda expressions or predicates. Even if one of the element do not satisfy the set condition, the All() method returns False, otherwise True. ⚡ The 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() method takes a predicate delegate as an argument and checks whether all elements in the collection satisfy the specified conditions and returns a boolean. Even if one of the element do not satisfy the set condition, the TrueForAll() method returns False, otherwise True. ✅ 𝐀𝐥𝐥() 𝐢𝐬 𝐦𝐨𝐫𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐥 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method. 🔥 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method can be more efficient than All(), especially for large collections such as 𝐋𝐢𝐬𝐭, 𝐀𝐫𝐫𝐚𝐲, 𝐈𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭 𝐚𝐧𝐝 𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭.𝐁𝐮𝐢𝐥𝐝𝐞𝐫 collection types. This is because TrueForAll() can use the underlying implementation of the collection to iterate over the elements in the most efficient way possible. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 🔥   💎𝐀𝐥𝐥() 𝐯𝐬 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() 𝐁𝐞𝐧𝐜𝐡𝐦𝐚𝐫𝐤 𝐓𝐞𝐬𝐭 𝐢𝐧 .𝐍𝐄𝐓 8.0 You should prefer to use 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() instead of 𝐀𝐥𝐥() method with collections. 💡 The 𝐀𝐥𝐥() method checks for all the elements in a collection and returns a boolean. It is used with lambda expressions or predicates. Even if one of the element do not satisfy the set condition, the All() method returns False, otherwise True. ⚡ The 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() method takes a predicate delegate as an argument and checks whether all elements in the collection satisfy the specified conditions and returns a boolean. Even if one of the element do not satisfy the set condition, the TrueForAll() method returns False, otherwise True. ✅ 𝐀𝐥𝐥() 𝐢𝐬 𝐦𝐨𝐫𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐥 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method. 🚀 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method can be more efficient than All(), especially for large collections such as 𝐋𝐢𝐬𝐭, 𝐀𝐫𝐫𝐚𝐲, 𝐈𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭 𝐚𝐧𝐝 𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭.𝐁𝐮𝐢𝐥𝐝𝐞𝐫 collection types. This is because TrueForAll() can use the underlying implementation of the collection to iterate over the elements in the most efficient way possible. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 - 𝐀𝐥𝐥() 𝐯𝐬 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() 🔥 🚀 You should prefer to use 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() instead of 𝐀𝐥𝐥() method with collections. ◾ The 𝐀𝐥𝐥() method checks for all the elements in a collection and returns a boolean. It is used with lambda expressions or predicates. Even if one of the element do not satisfy the set condition, the All() method returns False, otherwise True. ◾ The 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() method takes a predicate delegate as an argument and checks whether all elements in the collection satisfy the specified conditions and returns a boolean. Even if one of the element do not satisfy the set condition, the TrueForAll() method returns False, otherwise True. ✅ 𝐀𝐥𝐥() 𝐢𝐬 𝐦𝐨𝐫𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐥 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method. 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method can be more efficient than All(), especially for large collections such as 𝐋𝐢𝐬𝐭, 𝐀𝐫𝐫𝐚𝐲, 𝐈𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭 𝐚𝐧𝐝 𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭.𝐁𝐮𝐢𝐥𝐝𝐞𝐫 collection types. This is because TrueForAll() can use the underlying implementation of the collection to iterate over the elements in the most efficient way possible. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

💡 𝐂#/.𝐍𝐄𝐓 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐓𝐢𝐩 - 𝐀𝐥𝐥() 𝐯𝐬 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() 🔥 💎 You should prefer to use 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() instead of 𝐀𝐥𝐥() method with collections. 🔹 The 𝐀𝐥𝐥() method checks for all the elements in a collection and returns a boolean. It is used with lambda expressions or predicates. Even if one of the element do not satisfy the set condition, the All() method returns False, otherwise True. 🔹 The 𝐓𝐫𝐮𝐞𝐅𝐨𝐫𝐀𝐥𝐥() method takes a predicate delegate as an argument and checks whether all elements in the collection satisfy the specified conditions and returns a boolean. Even if one of the element do not satisfy the set condition, the TrueForAll() method returns False, otherwise True. ✅ 𝐀𝐥𝐥() 𝐢𝐬 𝐦𝐨𝐫𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐥 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method. ⚡ 𝗧𝗿𝘂𝗲𝗙𝗼𝗿𝗔𝗹𝗹() method can be more efficient than All(), especially for large collections such as 𝐋𝐢𝐬𝐭, 𝐀𝐫𝐫𝐚𝐲, 𝐈𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭 𝐚𝐧𝐝 𝐦𝐦𝐮𝐭𝐚𝐛𝐥𝐞𝐋𝐢𝐬𝐭.𝐁𝐮𝐢𝐥𝐝𝐞𝐫 collection types. This is because TrueForAll() can use the underlying implementation of the collection to iterate over the elements in the most efficient way possible. #csharp #dotnet #programming #softwareengineering #softwaredevelopment

🌹 A const value is a compile-time constant. A readonly field can only be assigned during declaration or in the constructor of the containing class.Can be initialized with a runtime value.

💡 𝗖# 𝐓𝐢𝐩 - 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀 𝗕𝗲𝘁𝘄𝗲𝗲𝗻 𝗖𝗼𝗻𝘀𝘁 𝗮𝗻𝗱 𝗥𝗲𝗮𝗱𝗼𝗻𝗹𝘆 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 🔥 𝗰𝗼𝗻𝘀𝘁 and 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆 in 𝗖# share the common feature of preventing variables from being modified after initialization, but they have some key differences. 🔷 𝗰𝗼𝗻𝘀𝘁 ➤ Constants are declared with the 𝗰𝗼𝗻𝘀𝘁 modifier. ➤ Defines a 𝗰𝗼𝗺𝗽𝗶𝗹𝗲-𝘁𝗶𝗺𝗲 constant. Its value is known and fixed at compile time and cannot be changed at runtime. ➤ Must be declared with an initializer and 𝗰𝗼𝗻𝘀𝘁 members are implicitly static. ➤ Can only be used with basic types like integers, booleans, and strings. User-defined types, including classes, structs, and arrays, cannot be 𝗰𝗼𝗻𝘀𝘁. 🔷 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆 ➤ Readonly are declared with the 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆 modifier. ➤ Defines a 𝗿𝘂𝗻𝘁𝗶𝗺𝗲 constant. Its value can be assigned during initialization or in the constructor, but cannot be modified after that. ➤ Can be declared with or without an initializer and can be static or non-static. ➤ Can be used with any type, including reference types. ❓What are your thoughts on 𝗰𝗼𝗻𝘀𝘁 and 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆? Comment below👇 ♻️ If this is useful, 𝙧𝙚𝙥𝙤𝙨𝙩 to spread the knowledge. 👉 Please follow me (Poorna Soysa) and click the notification bell icon (🔔)on my profile to receive notifications for all my upcoming posts. 𝗧𝗵𝗮𝗻𝗸 𝘆𝗼𝘂 𝗳𝗼𝗿 𝗿𝗲𝗮𝗱𝗶𝗻𝗴! #DotNET #CSharp #DotNETDevelopers #Programming

💡 𝗖# 𝐓𝐢𝐩 - 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲𝘀 𝗕𝗲𝘁𝘄𝗲𝗲𝗻 𝗖𝗼𝗻𝘀𝘁 𝗮𝗻𝗱 𝗥𝗲𝗮𝗱𝗼𝗻𝗹𝘆 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 🔥 𝗰𝗼𝗻𝘀𝘁 and 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆 in 𝗖# share the common feature of preventing variables from being modified after initialization, but they have some key differences. 🔷 𝗰𝗼𝗻𝘀𝘁 ➤ Constants are declared with the 𝗰𝗼𝗻𝘀𝘁 modifier. ➤ Defines a 𝗰𝗼𝗺𝗽𝗶𝗹𝗲-𝘁𝗶𝗺𝗲 constant. Its value is known and fixed at compile time and cannot be changed at runtime. ➤ Must be declared with an initializer and 𝗰𝗼𝗻𝘀𝘁 members are implicitly static. ➤ Can only be used with basic types like integers, booleans, and strings. User-defined types, including classes, structs, and arrays, cannot be 𝗰𝗼𝗻𝘀𝘁. 🔷 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆 ➤ Readonly are declared with the 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆 modifier. ➤ Defines a 𝗿𝘂𝗻𝘁𝗶𝗺𝗲 constant. Its value can be assigned during initialization or in the constructor, but cannot be modified after that. ➤ Can be declared with or without an initializer and can be static or non-static. ➤ Can be used with any type, including reference types. ❓What are your thoughts on 𝗰𝗼𝗻𝘀𝘁 and 𝗿𝗲𝗮𝗱𝗼𝗻𝗹𝘆? Comment below👇 ♻️ If this is useful, 𝙧𝙚𝙥𝙤𝙨𝙩 to spread the knowledge. 👉 Please follow me (Poorna Soysa) and click the notification bell icon (🔔)on my profile to receive notifications for all my upcoming posts. 𝗧𝗵𝗮𝗻𝗸 𝘆𝗼𝘂 𝗳𝗼𝗿 𝗿𝗲𝗮𝗱𝗶𝗻𝗴! #DotNET #CSharp #DotNETDevelopers #Programming

💡 𝐂#/.𝐍𝐄𝐓 𝐓𝐢𝐩 - 𝐈𝐧𝐝𝐞𝐱𝐎𝐟() 𝐯𝐬 𝐋𝐚𝐬𝐭𝐈𝐧𝐝𝐞𝐱𝐎𝐟() 🚀 💎𝐖𝐡𝐚𝐭 𝐢𝐬 𝐭𝐡𝐞 𝐈𝐧𝐝𝐞𝐱𝐎𝐟() 𝐦𝐞𝐭𝐡𝐨𝐝? 🔹 The 𝐈𝐧𝐝𝐞𝐱𝐎𝐟( ) method searches for the character or string given as a parameter in the string type variable that calls it. It searches from the first character of the data in the calling variable to the last character. 🔹 IndexOf( ) method returns -1 if it cannot find what it is looking for. If it finds what it is looking for, it returns the index (sequence number) value at whichever index (sequence number) it found it. ⚡𝐓𝐡𝐞 𝐬𝐞𝐚𝐫𝐜𝐡 𝐬𝐭𝐚𝐫𝐭𝐬 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐛𝐞𝐠𝐢𝐧𝐧𝐢𝐧𝐠 𝐨𝐟 𝐭𝐡𝐞 𝐬𝐭𝐫𝐢𝐧𝐠 𝐠𝐢𝐯𝐞𝐧 𝐚𝐬 𝐚 𝐩𝐚𝐫𝐚𝐦𝐞𝐭𝐞𝐫 𝐚𝐧𝐝 𝐠𝐨𝐞𝐬 𝐭𝐨 𝐭𝐡𝐞 𝐞𝐧𝐝. 💎𝐖𝐡𝐚𝐭 𝐢𝐬 𝐋𝐚𝐬𝐭𝐈𝐧𝐝𝐞𝐱𝐎𝐟() 𝐦𝐞𝐭𝐡𝐨𝐝? 🔹 The 𝐋𝐚𝐬𝐭𝐈𝐧𝐝𝐞𝐱𝐎𝐟() method searches for the character or string given as a parameter in the string type variable that calls it. It searches from the last character of the data in the calling variable to the first character. 🔹 LastIndexOf( ) method returns -1 if it cannot find what it is looking for. If it finds what it is looking for, it returns the index (sequence number) value at whichever index (sequence number) it found it. ⚡𝐓𝐡𝐞 𝐬𝐞𝐚𝐫𝐜𝐡 𝐬𝐭𝐚𝐫𝐭𝐬 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐞𝐧𝐝 𝐨𝐟 𝐭𝐡𝐞 𝐬𝐭𝐫𝐢𝐧𝐠 𝐠𝐢𝐯𝐞𝐧 𝐚𝐬 𝐚 𝐩𝐚𝐫𝐚𝐦𝐞𝐭𝐞𝐫 𝐚𝐧𝐝 𝐠𝐨𝐞𝐬 𝐭𝐨 𝐭𝐡𝐞 𝐛𝐞𝐠𝐢𝐧𝐧𝐢𝐧𝐠. ✅ 𝐃𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐜𝐞𝐬 𝐁𝐞𝐭𝐰𝐞𝐞𝐧 𝐈𝐧𝐝𝐞𝐱𝐎𝐟() 𝐚𝐧𝐝 𝐋𝐚𝐬𝐭𝐈𝐧𝐝𝐞𝐱𝐎𝐟() 𝐦𝐞𝐭𝐡𝐨𝐝𝐬: ◾ The 𝐈𝐧𝐝𝐞𝐱𝐎𝐟() method will return first occurrence of the value. ◾ The 𝐋𝐚𝐬𝐭𝐈𝐧𝐝𝐞𝐱𝐎𝐟() method will return the last occurence of the value. 🔥 Differences in performance may occur depending on whether the searched character is at the end or beginning of the string given as a parameter. #csharp #dotnet #programming #softwareengineering #softwaredevelopment