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Round double in two decimal places in C#?
...runc float: float myTruncFloat = float.Parse(Math.Round(myFloat, 2).ToString());
– Piero Alberto
Jun 1 '16 at 12:24
2
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SQL Server dynamic PIVOT query?
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So \@cols must be string-concatenated, right? We can't use sp_executesql and parameter-binding to interpolate \@cols in there? Even though we construct \@cols ourself, what if somehow it contained malicious SQL. Any additional mitigating steps...
Delete with Join in MySQL
...oject_id
WHERE projects.client_id = :client_id
In this case, table_name1 and table_name2 are the same table, so this will work:
DELETE projects FROM posts INNER JOIN [...]
You can even delete from both tables if you wanted to:
DELETE posts, projects FROM posts INNER JOIN [...]
Note that orde...
How can I enable or disable the GPS programmatically on Android?
...discussion.
here's some example code i use
private void turnGPSOn(){
String provider = Settings.Secure.getString(getContentResolver(), Settings.Secure.LOCATION_PROVIDERS_ALLOWED);
if(!provider.contains("gps")){ //if gps is disabled
final Intent poke = new Intent();
poke.se...
Choosing between std::map and std::unordered_map [duplicate]
...prone: numbers passed through unaltered, only 10 characters spaced along a string of any length are combined in the hash value, bucket counts aren't prime. (GNU is at the opposite end of the spectrum).
– Tony Delroy
Aug 27 '15 at 3:49
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Sending JWT token in the headers with Postman
...en. I just tried it out and it works for me.
Authorization: Bearer TOKEN_STRING
Each part of the JWT is a base64url encoded value.
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Does the join order matter in SQL?
Disregarding performance, will I get the same result from query A and B below? How about C and D?
4 Answers
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Which MySQL data type to use for storing boolean values
...ntext is first evaluated as integer (decimal and float values are rounded, strings are converted in the usual quirky way MySQL converts strings to integer). A NULL is obviously NULL (neither TRUE nor FALSE). An integer value of 0 is handled as FALSE, and any other integer value (1, 2, -7, etc) evalu...
Check whether a cell contains a substring
...here an in-built function to check if a cell contains a given character/substring?
9 Answers
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What is the garbage collector in Java?
...a typical Java application is running, it is creating new objects, such as Strings and Files, but after a certain time, those objects are not used anymore. For example, take a look at the following code:
for (File f : files) {
String s = f.getName();
}
In the above code, the String s is being...