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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...
1003
I would recommend using INSERT...ON DUPLICATE KEY UPDATE.
If you use INSERT IGNORE, then the...
Is iterating ConcurrentHashMap values thread safe?
...entHashMap<String, String>();
private final static int MAP_SIZE = 100000;
public static void main(String[] args)
{
new ConcurrentMapIteration().run();
}
public ConcurrentMapIteration()
{
for (int i = 0; i < MAP_SIZE; i++)
{
map.put("key" + i, UUID.randomUUID...
Is it possible to perform a 'grep search' in all the branches of a Git project?
...s about 4sec so I don't want nor need to search across more than the, say, 100 latest of them). For this I've updated the git for-each-ref with --sort=-committerdate --count=100 ! Thanks for the original idea!
– Vser
Jan 29 at 9:52
...
Stop Excel from automatically converting certain text values to dates
... to test using this row of data: "806676","None","41","=""May 16, 2011""","100.00","False"
– tbc0
Sep 26 '17 at 20:43
...
Creating a BLOB from a Base64 string in JavaScript
...n server, when users were using Chrome or IE to download files larger than 100mb. We found that the in IE following line was raising memory exception "var byteNumbers = new Array(slice.length)". However in chrome, it was the for loop causing same issue. We couldn't find a proper resolution to this i...
Edit the root commit in Git?
...erally not practical. What do you think? What happens if I've already made 100 commits, and I suddenly need to edit the root commit. Will this still work, in that case, if I didn't make that empty commit at the start?
– user456814
Jul 20 '14 at 6:58
...
Why does the arrow (->) operator in C exist?
...ke these
int i = 5;
i->b = 42; /* Write 42 into `int` at address 7 */
100->a = 0; /* Write 0 into `int` at address 100 */
The first assignment was interpreted by the compiler as "take address 5, add offset 2 to it and assign 42 to the int value at the resultant address". I.e. the above wou...
Current time formatting with Javascript
...function() {
if ((nYear&3)!==0) return false;
return nYear%100!==0 || nYear%400===0;
},
getThursday = function() {
var target = new Date(date);
target.setDate(nDate - ((nDay+6)%7) + 3);
return target;
},
zeroPad = function(nNum, nPad) {
return ...
Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...e: google.com
Address 1: 2a00:1450:4009:811::200e lhr26s02-in-x200e.1e100.net
Address 2: 216.58.198.174 lhr25s10-in-f14.1e100.net
REFERENCES:
I based my solution on an article by Robin Winslow, who deserves all of the credit for the solution. Thanks, Robin!
"Fix Docker's networking DNS conf...
WPF Data Binding and Validation Rules Best Practices
...lidation for (for exemple) an "Age" property that could not be bigger then 100 in the ValidationRule, then repeat the same logic in the IDataErrorInfo interface, wich duplicates the logic. Is there any way around that?
– JFTxJ
Sep 20 '13 at 17:33
...