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Proper way to catch exception from JSON.parse
...; req.status == 200))
return false;
const json = (function(raw) {
try {
return JSON.parse(raw);
} catch (err) {
return false;
}
})(req.responseText);
if (!json)
return false;
document.body.innerHTML = "Y...
Javascript trick for 'paste as plain text` in execCommand
... = window.clipboardData.getData('Text');
document.selection.createRange().pasteHTML(content);
}
});
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Long vs Integer, long vs int, what to use and when?
...
By default use an int, when holding numbers.
If the range of int is too small, use a long
If the range of long is too small, use BigInteger
If you need to handle your numbers as object (for example when putting them into a Collection, handling null, ...) use Integer/Long inste...
How to get the parents of a merge commit in git?
... simplest way I've found to view the parents of a merge
git show --pretty=raw 3706454
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What's the main difference between int.Parse() and Convert.ToInt32
...
int.Parse(string s)
Integer in RANGE > returns integer value
Null value > ArguementNullException
Not in format > FormatException
Value not in RANGE > OverflowException
...
How to print out the contents of a vector?
...for more complicated objects where this solution is not going to be ideal.
range-based for loop (C++11)
See Jefffrey's solution. In C++11 (and later) you can use the new range-based for loop, which looks like this:
for (auto i: path)
std::cout << i << ' ';
Since path is a vector of it...
Which is the fastest algorithm to find prime numbers?
...e reduces the number of operations compared to SoA: For the 32-bit number range (2^32 - 1), primesieve does about 1.2 billion culls whereas SoA does a total of about 1.4 billion combined toggle and square free operations, both operations being of about the same complexity and able to be optimized i...
Lazy Method for Reading Big File in Python?
..._row(chunksize=1024):
with open(test_file, 'w') as f:
for i in range(1025):
f.write('a')
with open(test_file) as f:
assert len(list(rows(f, chunksize=chunksize))) == 1
@cleanup
def test_1024_chars_2_rows(chunksize=1024):
with open(test_file, 'w') as f:
...
What is the official “preferred” way to install pip and virtualenv systemwide?
...lls pip and setuptools automatically: wget --no-check-certificate https://raw.github.com/pypa/pip/master/contrib/get-pip.py and then python get-pip.py (may require sudo)
– Ciantic
Feb 9 '14 at 22:26
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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?
...g frequently requested values. This method will always cache values in the range -128 to 127, inclusive, and may cache other values outside of this range.
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