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Is String.Format as efficient as StringBuilder
Suppose I have a stringbuilder in C# that does this:
12 Answers
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What is the maximum length of a Push Notification alert text?
...kes up 20 characters (20 bytes), leaving 236 bytes to put inside the alert string. With ASCII that will be 236 characters, and could be lesser with UTF8 and UTF16.
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Divide a number by 3 without using *, /, +, -, % operators
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Use itoa to convert to a base 3 string. Drop the last trit and convert back to base 10.
// Note: itoa is non-standard but actual implementations
// don't seem to handle negative when base != 10.
int div3(int i) {
char str[42];
sprintf(str, "%d", IN...
max value of integer
...numbers as they were unsigned (that is, handling all bits correctly).
The character data type char is 16 bits wide, unsigned, and holds characters using UTF-16 encoding (however, it is possible to assign a char an arbitrary unsigned 16 bit integer that represents an invalid character codepoint)
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How do you compare structs for equality in C?
... do the wrong thing at application level. For example, should two UNICODE_STRING structs in Windows be compared shallowly or deeply?
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What is the maximum length of a table name in Oracle?
...ou have a 12.2 DB with compatible set to 11.2.0, is still limits you to 30 chars.
– rtaft
Nov 15 '18 at 15:13
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How to start new activity on button click
...onCreate(Bundle savedInstanceState) {
Intent intent = getIntent();
String value = intent.getStringExtra("key"); //if it's a string you stored.
}
Don't forget to add your new activity in the AndroidManifest.xml:
<activity android:label="@string/app_name" android:name="NextActivity"/>...
jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON
...properly escaped like \' ), jQuery fails to parse an otherwise valid JSON string. Here’s an example of what I mean ( done in Chrome’s console ):
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Turn a simple socket into an SSL socket
...ill need to initialize OpenSSL:
void InitializeSSL()
{
SSL_load_error_strings();
SSL_library_init();
OpenSSL_add_all_algorithms();
}
void DestroySSL()
{
ERR_free_strings();
EVP_cleanup();
}
void ShutdownSSL()
{
SSL_shutdown(cSSL);
SSL_free(cSSL);
}
Now for the bulk o...
Reading large text files with streams in C#
...w BufferedStream(fs))
using (StreamReader sr = new StreamReader(bs))
{
string line;
while ((line = sr.ReadLine()) != null)
{
}
}
March 2013 UPDATE
I recently wrote code for reading and processing (searching for text in) 1 GB-ish text files (much larger than the files involved he...