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How to control the line spacing in UILabel
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Starting from iOS 6 you can set an attributed string to the UILabel. Check the following :
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:label.text];
NSMutableParagraphStyle *paragra...
Passing variable number of arguments around
...w can I call another function which expects a variable number of arguments from inside of it, passing all the arguments that got into the first function?
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Printing hexadecimal characters in C
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You are probably printing from a signed char array. Either print from an unsigned char array or mask the value with 0xff: e.g. ar[i] & 0xFF. The c0 values are being sign extended because the high (sign) bit is set.
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Convert a Map to a POJO
...Gson();
JsonElement jsonElement = gson.toJsonTree(map);
MyPojo pojo = gson.fromJson(jsonElement, MyPojo.class);
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How do I check the difference, in seconds, between two dates?
... @Nickpick the value is not always positive. e.g. the following is -60: from datetime import datetime; (datetime(2019, 1, 1, 0, 0) - datetime(2019, 1, 1, 0, 1)).total_seconds()
– JDiMatteo
Jan 2 '19 at 2:06
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How to tag an older commit in Git?
...ection "On Backdating Tags" which says:
If you have imported some changes from another VCS and would like to add tags for major releases of your work, it is useful to be able to specify the date to embed inside of the tag object; such data in the tag object affects, for example, the ordering of tag...
Clearing all cookies with JavaScript
...knocked together this function which will attempt to delete a named cookie from all paths. Just call this for each of your cookies and you should be closer to deleting every cookie then you were before.
function eraseCookieFromAllPaths(name) {
// This function will attempt to remove a cookie f...
Double Negation in C++
...actually a very useful idiom in some contexts. Take these macros (example from the Linux kernel). For GCC, they're implemented as follows:
#define likely(cond) (__builtin_expect(!!(cond), 1))
#define unlikely(cond) (__builtin_expect(!!(cond), 0))
Why do they have to do this? GCC's __builtin_...
Why doesn't a python dict.update() return the object?
...kes extensive use of chaining. Its not discouraged, you could even inherit from dict and only override update to do update and return self, if you really want it.
class myDict(dict):
def update(self, *args):
dict.update(self, *args)
return self
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What is the Difference Between read() and recv() , and Between send() and write()?
...owledge about how IP stacks work in kernels and not visible to the caller. From caller perspective, they will still provide equal behavior.
– Mecki
Jul 19 '17 at 16:51
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