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How do I avoid capturing self in blocks when implementing an API?
...ample, I've seen people weakify an object and then, in the block they do: [array addObject:weakObject]; If the weakObject has been released, this causes a crash. Clearly that is not preferred over a retain cycle. You have to understand whether your block actually lives long enough to warrant weakify...
What are major differences between C# and Java?
...efficiency (e.g. a List<byte> as a byte[] backing it, rather than an array of boxed bytes.)
C# doesn't have checked exceptions
Java doesn't allow the creation of user-defined value types
Java doesn't have operator and conversion overloading
Java doesn't have iterator blocks for simple implemet...
Getting exact error type in from DbValidationException
...lidation error count is shown as 1, there are actually two elements in the array with two errors.
– matrix
Aug 20 '13 at 16:14
3
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Update Git submodule to latest commit on origin
...ritten to output.
This list of relative submodule paths is captured in an array ($(...)) - finally iterate this and do git add $i to update the parent repository.
Finally, a commit with some message explaining that the parent repository was updated. This commit will be ignored by default, if nothi...
How to show line number when executing bash script
...e the function was called, try $BASH_LINENO. Note that this variable is an array.
For example:
#!/bin/bash
function log() {
echo "LINENO: ${LINENO}"
echo "BASH_LINENO: ${BASH_LINENO[*]}"
}
function foo() {
log "$@"
}
foo "$@"
See here for details of Bash variables.
...
d3 axis labeling
...tAxis)
.ticks(3)
.tickValues([100, 200, 300]) //specify an array here for values
.orient("bottom");
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Polymorphism with gson
I have a problem deserializing a json string with Gson.
I receive an array of commands. The command can be start, stop , some other type of command. Naturally I have polymorphism, and start/stop command inherit from command.
...
Adding code to a javascript function programmatically
...n actual Arguments object as the second arg for .apply(). But if it was an Array-like object like a jQuery object for example, then yes, some browsers would throw an error
– user1106925
Mar 22 '12 at 21:55
...
Naming convention for Scala constants?
... {
val lowerConst = "lower"
val UpperConst = "UPPER"
def main(args: Array[String]) {
for (i <- Seq(lowerConst, UpperConst, "should mismatch.").map(Option.apply)) {
print("Input '%s' results in: ".format(i))
i match {
case Some(UpperConst) => println("UPPER!!!")
...
printf format specifiers for uint32_t and size_t
...will do the equivalent of reading too much or too little memory out of the array. As long as you use explicit casts to match up types, it's portable.
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