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When should you use constexpr capability in C++11?
... @alecov Definitly not everything... I/O, syscall and dynamic memory allocation definitly cann't be marked as constexpr Besides, not everything should be constexpr.
– JiaHao Xu
Oct 8 '18 at 7:52
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'printf' vs. 'cout' in C++
...y.
Less error prone: With <iostream>, there are no redundant
"%" tokens that have to be consistent
with the actual objects being I/O'd.
Removing redundancy removes a class
of errors.
Extensible: The C++ <iostream> mechanism allows new user-defined
types to be I/O'd without ...
How to find a hash key containing a matching value
... #invert is a really bad idea in this case, since you are essentially allocating memory for throw-away hash object just for the sake of finding a key. Depending on hash size it have serious performance impact
– Dr.Strangelove
Jun 1 '17 at 11:57
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Using a custom typeface in Android
...
This will work, but pre-ICS it will allocate memory for the fonts for each view you instantiate: code.google.com/p/android/issues/detail?id=9904 A way to fix this is to create a globally-accessible static hashmap of all instantiated fonts: code.google.com/p/and...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
... tweaks don't directly affect the problem. But they influence the register allocator which assigns the registers to the variables.
In your case, the speeds are a direct result of what is stuck to the (false) dependency chain depending on what the register allocator decided to do.
13 GB/s has a ch...
MySQL: Enable LOAD DATA LOCAL INFILE
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Replace the driver php5-mysql by the native driver
On debian
apt-get install php5-mysqlnd
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What does “javascript:void(0)” mean?
... is a non-JavaScript way of doing the same thing (for example, ‘thispage.php?show=foo’ that sets foo visible to begin with), you can link to that.
Otherwise, if a link points only to some script, it is not really a link and should not be marked up as such. The usual approach would be to add the...
MySQL OPTIMIZE all tables?
...n any SQL IDE connected to your database.
Notice: this code WON'T work on phpmyadmin.
How it works
It runs a show tables statement and stores it in a prepared statement. Then it runs a optimize table in the selected set.
You can control which tables to optimize by setting a different value in th...
Is GET data also encrypted in HTTPS?
...he host name is sent securely.
For example,
https://somewhere.com/index.php?NAME=FIELD
The /index.php?NAME=FIELD part is encrypted. The somewhere.com is not.
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What is the correct syntax of ng-include?
...pp/templates/includes) and the calling file is (public/app/templates/index.php) the include path needed to be (app/templates/includes/filetoinclude.php). I could not get relative to work.
– Jason Spick
Mar 10 '14 at 13:38
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